Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1 | /* |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2 | * Secret Labs' Regular Expression Engine |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 3 | * |
Fredrik Lundh | 6c68dc7 | 2000-06-29 10:34:56 +0000 | [diff] [blame] | 4 | * regular expression matching engine |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 5 | * |
| 6 | * partial history: |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 7 | * 1999-10-24 fl created (based on existing template matcher code) |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 8 | * 2000-03-06 fl first alpha, sort of |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 9 | * 2000-08-01 fl fixes for 1.6b1 |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 10 | * 2000-08-07 fl use PyOS_CheckStack() if available |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 11 | * 2000-09-20 fl added expand method |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 12 | * 2001-03-20 fl lots of fixes for 2.1b2 |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 13 | * 2001-04-15 fl export copyright as Python attribute, not global |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 14 | * 2001-04-28 fl added __copy__ methods (work in progress) |
Fredrik Lundh | 09705f0 | 2002-11-22 12:46:35 +0000 | [diff] [blame] | 15 | * 2001-05-14 fl fixes for 1.5.2 compatibility |
Fredrik Lundh | f71ae46 | 2001-07-02 17:04:48 +0000 | [diff] [blame] | 16 | * 2001-07-01 fl added BIGCHARSET support (from Martin von Loewis) |
Fredrik Lundh | 397a654 | 2001-10-18 19:30:16 +0000 | [diff] [blame] | 17 | * 2001-10-18 fl fixed group reset issue (from Matthew Mueller) |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 18 | * 2001-10-20 fl added split primitive; reenable unicode for 1.6/2.0/2.1 |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 19 | * 2001-10-21 fl added sub/subn primitive |
Fredrik Lundh | 703ce81 | 2001-10-24 22:16:30 +0000 | [diff] [blame] | 20 | * 2001-10-24 fl added finditer primitive (for 2.2 only) |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 21 | * 2001-12-07 fl fixed memory leak in sub/subn (Guido van Rossum) |
Fredrik Lundh | 09705f0 | 2002-11-22 12:46:35 +0000 | [diff] [blame] | 22 | * 2002-11-09 fl fixed empty sub/subn return type |
Martin v. Löwis | 78e2f06 | 2003-04-19 12:56:08 +0000 | [diff] [blame] | 23 | * 2003-04-18 mvl fully support 4-byte codes |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 24 | * |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 25 | * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 26 | * |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 27 | * This version of the SRE library can be redistributed under CNRI's |
| 28 | * Python 1.6 license. For any other use, please contact Secret Labs |
| 29 | * AB (info@pythonware.com). |
| 30 | * |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 31 | * Portions of this engine have been developed in cooperation with |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 32 | * CNRI. Hewlett-Packard provided funding for 1.6 integration and |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 33 | * other compatibility work. |
| 34 | */ |
| 35 | |
| 36 | #ifndef SRE_RECURSIVE |
| 37 | |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 38 | static char copyright[] = |
Fredrik Lundh | 09705f0 | 2002-11-22 12:46:35 +0000 | [diff] [blame] | 39 | " SRE 2.2.2 Copyright (c) 1997-2002 by Secret Labs AB "; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 40 | |
| 41 | #include "Python.h" |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 42 | #include "structmember.h" /* offsetof */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 43 | |
| 44 | #include "sre.h" |
| 45 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 46 | #include <ctype.h> |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 47 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 48 | /* name of this module, minus the leading underscore */ |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 49 | #if !defined(SRE_MODULE) |
| 50 | #define SRE_MODULE "sre" |
| 51 | #endif |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 52 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 53 | /* defining this one enables tracing */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 54 | #undef VERBOSE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 55 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 56 | #if PY_VERSION_HEX >= 0x01060000 |
| 57 | #if PY_VERSION_HEX < 0x02020000 || defined(Py_USING_UNICODE) |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 58 | /* defining this enables unicode support (default under 1.6a1 and later) */ |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 59 | #define HAVE_UNICODE |
| 60 | #endif |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 61 | #endif |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 62 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 63 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 64 | /* optional features */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 65 | |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 66 | /* prevent run-away recursion (bad patterns on long strings) */ |
| 67 | |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 68 | #if !defined(USE_STACKCHECK) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 69 | #if defined(MS_WIN64) || defined(__LP64__) || defined(_LP64) |
| 70 | /* require smaller recursion limit for a number of 64-bit platforms: |
| 71 | Win64 (MS_WIN64), Linux64 (__LP64__), Monterey (64-bit AIX) (_LP64) */ |
| 72 | /* FIXME: maybe the limit should be 40000 / sizeof(void*) ? */ |
| 73 | #define USE_RECURSION_LIMIT 7500 |
| 74 | #else |
Gustavo Niemeyer | c23fb77 | 2003-04-27 06:58:54 +0000 | [diff] [blame] | 75 | #if defined(__GNUC__) && (__GNUC__ > 2) && \ |
| 76 | (defined(__FreeBSD__) || defined(PYOS_OS2)) |
| 77 | /* gcc 3.x, on FreeBSD and OS/2+EMX and at optimisation levels of |
| 78 | * -O3 (autoconf default) and -O2 (EMX port default), generates code |
| 79 | * for _sre that fails for the default recursion limit. |
| 80 | */ |
| 81 | #define USE_RECURSION_LIMIT 7500 |
| 82 | #else |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 83 | #define USE_RECURSION_LIMIT 10000 |
| 84 | #endif |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 85 | #endif |
Gustavo Niemeyer | c23fb77 | 2003-04-27 06:58:54 +0000 | [diff] [blame] | 86 | #endif |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 87 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 88 | /* enables fast searching */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 89 | #define USE_FAST_SEARCH |
| 90 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 91 | /* enables aggressive inlining (always on for Visual C) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 92 | #undef USE_INLINE |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 93 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 94 | /* enables copy/deepcopy handling (work in progress) */ |
| 95 | #undef USE_BUILTIN_COPY |
| 96 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 97 | #if PY_VERSION_HEX < 0x01060000 |
| 98 | #define PyObject_DEL(op) PyMem_DEL((op)) |
| 99 | #endif |
| 100 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 101 | /* -------------------------------------------------------------------- */ |
| 102 | |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 103 | #if defined(_MSC_VER) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 104 | #pragma optimize("agtw", on) /* doesn't seem to make much difference... */ |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 105 | #pragma warning(disable: 4710) /* who cares if functions are not inlined ;-) */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 106 | /* fastest possible local call under MSVC */ |
| 107 | #define LOCAL(type) static __inline type __fastcall |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 108 | #elif defined(USE_INLINE) |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 109 | #define LOCAL(type) static inline type |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 110 | #else |
| 111 | #define LOCAL(type) static type |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 112 | #endif |
| 113 | |
| 114 | /* error codes */ |
| 115 | #define SRE_ERROR_ILLEGAL -1 /* illegal opcode */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 116 | #define SRE_ERROR_STATE -2 /* illegal state */ |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 117 | #define SRE_ERROR_RECURSION_LIMIT -3 /* runaway recursion */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 118 | #define SRE_ERROR_MEMORY -9 /* out of memory */ |
| 119 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 120 | #if defined(VERBOSE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 121 | #define TRACE(v) printf v |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 122 | #else |
| 123 | #define TRACE(v) |
| 124 | #endif |
| 125 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 126 | /* -------------------------------------------------------------------- */ |
| 127 | /* search engine state */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 128 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 129 | /* default character predicates (run sre_chars.py to regenerate tables) */ |
| 130 | |
| 131 | #define SRE_DIGIT_MASK 1 |
| 132 | #define SRE_SPACE_MASK 2 |
| 133 | #define SRE_LINEBREAK_MASK 4 |
| 134 | #define SRE_ALNUM_MASK 8 |
| 135 | #define SRE_WORD_MASK 16 |
| 136 | |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 137 | /* FIXME: this assumes ASCII. create tables in init_sre() instead */ |
| 138 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 139 | static char sre_char_info[128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 2, |
| 140 | 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, |
| 141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, |
| 142 | 25, 25, 0, 0, 0, 0, 0, 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 143 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, |
| 144 | 0, 0, 16, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 145 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0 }; |
| 146 | |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 147 | static char sre_char_lower[128] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 148 | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, |
| 149 | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, |
| 150 | 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, |
| 151 | 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, |
| 152 | 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, |
| 153 | 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, |
| 154 | 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, |
| 155 | 120, 121, 122, 123, 124, 125, 126, 127 }; |
| 156 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 157 | #define SRE_IS_DIGIT(ch)\ |
| 158 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_DIGIT_MASK) : 0) |
| 159 | #define SRE_IS_SPACE(ch)\ |
| 160 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_SPACE_MASK) : 0) |
| 161 | #define SRE_IS_LINEBREAK(ch)\ |
| 162 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_LINEBREAK_MASK) : 0) |
| 163 | #define SRE_IS_ALNUM(ch)\ |
| 164 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_ALNUM_MASK) : 0) |
| 165 | #define SRE_IS_WORD(ch)\ |
| 166 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_WORD_MASK) : 0) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 167 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 168 | static unsigned int sre_lower(unsigned int ch) |
| 169 | { |
| 170 | return ((ch) < 128 ? sre_char_lower[ch] : ch); |
| 171 | } |
| 172 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 173 | /* locale-specific character predicates */ |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 174 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 175 | #define SRE_LOC_IS_DIGIT(ch) ((ch) < 256 ? isdigit((ch)) : 0) |
| 176 | #define SRE_LOC_IS_SPACE(ch) ((ch) < 256 ? isspace((ch)) : 0) |
| 177 | #define SRE_LOC_IS_LINEBREAK(ch) ((ch) == '\n') |
| 178 | #define SRE_LOC_IS_ALNUM(ch) ((ch) < 256 ? isalnum((ch)) : 0) |
| 179 | #define SRE_LOC_IS_WORD(ch) (SRE_LOC_IS_ALNUM((ch)) || (ch) == '_') |
| 180 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 181 | static unsigned int sre_lower_locale(unsigned int ch) |
| 182 | { |
| 183 | return ((ch) < 256 ? tolower((ch)) : ch); |
| 184 | } |
| 185 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 186 | /* unicode-specific character predicates */ |
| 187 | |
| 188 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 189 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 190 | #define SRE_UNI_IS_DIGIT(ch) Py_UNICODE_ISDIGIT((Py_UNICODE)(ch)) |
| 191 | #define SRE_UNI_IS_SPACE(ch) Py_UNICODE_ISSPACE((Py_UNICODE)(ch)) |
| 192 | #define SRE_UNI_IS_LINEBREAK(ch) Py_UNICODE_ISLINEBREAK((Py_UNICODE)(ch)) |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 193 | #define SRE_UNI_IS_ALNUM(ch) Py_UNICODE_ISALNUM((Py_UNICODE)(ch)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 194 | #define SRE_UNI_IS_WORD(ch) (SRE_UNI_IS_ALNUM((ch)) || (ch) == '_') |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 195 | |
| 196 | static unsigned int sre_lower_unicode(unsigned int ch) |
| 197 | { |
| 198 | return (unsigned int) Py_UNICODE_TOLOWER((Py_UNICODE)(ch)); |
| 199 | } |
| 200 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 201 | #endif |
| 202 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 203 | LOCAL(int) |
| 204 | sre_category(SRE_CODE category, unsigned int ch) |
| 205 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 206 | switch (category) { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 207 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 208 | case SRE_CATEGORY_DIGIT: |
| 209 | return SRE_IS_DIGIT(ch); |
| 210 | case SRE_CATEGORY_NOT_DIGIT: |
| 211 | return !SRE_IS_DIGIT(ch); |
| 212 | case SRE_CATEGORY_SPACE: |
| 213 | return SRE_IS_SPACE(ch); |
| 214 | case SRE_CATEGORY_NOT_SPACE: |
| 215 | return !SRE_IS_SPACE(ch); |
| 216 | case SRE_CATEGORY_WORD: |
| 217 | return SRE_IS_WORD(ch); |
| 218 | case SRE_CATEGORY_NOT_WORD: |
| 219 | return !SRE_IS_WORD(ch); |
| 220 | case SRE_CATEGORY_LINEBREAK: |
| 221 | return SRE_IS_LINEBREAK(ch); |
| 222 | case SRE_CATEGORY_NOT_LINEBREAK: |
| 223 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 224 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 225 | case SRE_CATEGORY_LOC_WORD: |
| 226 | return SRE_LOC_IS_WORD(ch); |
| 227 | case SRE_CATEGORY_LOC_NOT_WORD: |
| 228 | return !SRE_LOC_IS_WORD(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 229 | |
| 230 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 231 | case SRE_CATEGORY_UNI_DIGIT: |
| 232 | return SRE_UNI_IS_DIGIT(ch); |
| 233 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 234 | return !SRE_UNI_IS_DIGIT(ch); |
| 235 | case SRE_CATEGORY_UNI_SPACE: |
| 236 | return SRE_UNI_IS_SPACE(ch); |
| 237 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 238 | return !SRE_UNI_IS_SPACE(ch); |
| 239 | case SRE_CATEGORY_UNI_WORD: |
| 240 | return SRE_UNI_IS_WORD(ch); |
| 241 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 242 | return !SRE_UNI_IS_WORD(ch); |
| 243 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 244 | return SRE_UNI_IS_LINEBREAK(ch); |
| 245 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 246 | return !SRE_UNI_IS_LINEBREAK(ch); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 247 | #else |
| 248 | case SRE_CATEGORY_UNI_DIGIT: |
| 249 | return SRE_IS_DIGIT(ch); |
| 250 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 251 | return !SRE_IS_DIGIT(ch); |
| 252 | case SRE_CATEGORY_UNI_SPACE: |
| 253 | return SRE_IS_SPACE(ch); |
| 254 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 255 | return !SRE_IS_SPACE(ch); |
| 256 | case SRE_CATEGORY_UNI_WORD: |
| 257 | return SRE_LOC_IS_WORD(ch); |
| 258 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 259 | return !SRE_LOC_IS_WORD(ch); |
| 260 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 261 | return SRE_IS_LINEBREAK(ch); |
| 262 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 263 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 264 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 265 | } |
| 266 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | /* helpers */ |
| 270 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 271 | static void |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 272 | mark_fini(SRE_STATE* state) |
| 273 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 274 | if (state->mark_stack) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 275 | free(state->mark_stack); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 276 | state->mark_stack = NULL; |
| 277 | } |
| 278 | state->mark_stack_size = state->mark_stack_base = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | static int |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 282 | mark_save(SRE_STATE* state, int lo, int hi, int *mark_stack_base) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 283 | { |
| 284 | void* stack; |
| 285 | int size; |
| 286 | int minsize, newsize; |
| 287 | |
| 288 | if (hi <= lo) |
| 289 | return 0; |
| 290 | |
| 291 | size = (hi - lo) + 1; |
| 292 | |
| 293 | newsize = state->mark_stack_size; |
| 294 | minsize = state->mark_stack_base + size; |
| 295 | |
| 296 | if (newsize < minsize) { |
| 297 | /* create new stack */ |
| 298 | if (!newsize) { |
| 299 | newsize = 512; |
| 300 | if (newsize < minsize) |
| 301 | newsize = minsize; |
| 302 | TRACE(("allocate stack %d\n", newsize)); |
| 303 | stack = malloc(sizeof(void*) * newsize); |
| 304 | } else { |
| 305 | /* grow the stack */ |
| 306 | while (newsize < minsize) |
| 307 | newsize += newsize; |
| 308 | TRACE(("grow stack to %d\n", newsize)); |
| 309 | stack = realloc(state->mark_stack, sizeof(void*) * newsize); |
| 310 | } |
| 311 | if (!stack) { |
| 312 | mark_fini(state); |
| 313 | return SRE_ERROR_MEMORY; |
| 314 | } |
| 315 | state->mark_stack = stack; |
| 316 | state->mark_stack_size = newsize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 317 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 318 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 319 | TRACE(("copy %d:%d to %d (%d)\n", lo, hi, state->mark_stack_base, size)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 320 | |
| 321 | memcpy(state->mark_stack + state->mark_stack_base, state->mark + lo, |
| 322 | size * sizeof(void*)); |
| 323 | |
| 324 | state->mark_stack_base += size; |
| 325 | |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 326 | *mark_stack_base = state->mark_stack_base; |
| 327 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 328 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 329 | } |
| 330 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 331 | static int |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 332 | mark_restore(SRE_STATE* state, int lo, int hi, int *mark_stack_base) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 333 | { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 334 | int size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 335 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 336 | if (hi <= lo) |
| 337 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 338 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 339 | size = (hi - lo) + 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 340 | |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 341 | state->mark_stack_base = *mark_stack_base - size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 342 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 343 | TRACE(("copy %d:%d from %d\n", lo, hi, state->mark_stack_base)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 344 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 345 | memcpy(state->mark + lo, state->mark_stack + state->mark_stack_base, |
| 346 | size * sizeof(void*)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 347 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 348 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 349 | } |
| 350 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 351 | /* generate 8-bit version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 352 | |
| 353 | #define SRE_CHAR unsigned char |
| 354 | #define SRE_AT sre_at |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 355 | #define SRE_COUNT sre_count |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 356 | #define SRE_CHARSET sre_charset |
| 357 | #define SRE_INFO sre_info |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 358 | #define SRE_MATCH sre_match |
| 359 | #define SRE_SEARCH sre_search |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 360 | #define SRE_LITERAL_TEMPLATE sre_literal_template |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 361 | |
| 362 | #if defined(HAVE_UNICODE) |
| 363 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 364 | #define SRE_RECURSIVE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 365 | #include "_sre.c" |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 366 | #undef SRE_RECURSIVE |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 367 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 368 | #undef SRE_LITERAL_TEMPLATE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 369 | #undef SRE_SEARCH |
| 370 | #undef SRE_MATCH |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 371 | #undef SRE_INFO |
| 372 | #undef SRE_CHARSET |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 373 | #undef SRE_COUNT |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 374 | #undef SRE_AT |
| 375 | #undef SRE_CHAR |
| 376 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 377 | /* generate 16-bit unicode version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 378 | |
| 379 | #define SRE_CHAR Py_UNICODE |
| 380 | #define SRE_AT sre_uat |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 381 | #define SRE_COUNT sre_ucount |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 382 | #define SRE_CHARSET sre_ucharset |
| 383 | #define SRE_INFO sre_uinfo |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 384 | #define SRE_MATCH sre_umatch |
| 385 | #define SRE_SEARCH sre_usearch |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 386 | #define SRE_LITERAL_TEMPLATE sre_uliteral_template |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 387 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 388 | |
| 389 | #endif /* SRE_RECURSIVE */ |
| 390 | |
| 391 | /* -------------------------------------------------------------------- */ |
| 392 | /* String matching engine */ |
| 393 | |
| 394 | /* the following section is compiled twice, with different character |
| 395 | settings */ |
| 396 | |
| 397 | LOCAL(int) |
| 398 | SRE_AT(SRE_STATE* state, SRE_CHAR* ptr, SRE_CODE at) |
| 399 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 400 | /* check if pointer is at given position */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 401 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 402 | int this, that; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 403 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 404 | switch (at) { |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 405 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 406 | case SRE_AT_BEGINNING: |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 407 | case SRE_AT_BEGINNING_STRING: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 408 | return ((void*) ptr == state->beginning); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 409 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 410 | case SRE_AT_BEGINNING_LINE: |
| 411 | return ((void*) ptr == state->beginning || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 412 | SRE_IS_LINEBREAK((int) ptr[-1])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 413 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 414 | case SRE_AT_END: |
Fredrik Lundh | ef34bd2 | 2000-06-30 21:40:20 +0000 | [diff] [blame] | 415 | return (((void*) (ptr+1) == state->end && |
| 416 | SRE_IS_LINEBREAK((int) ptr[0])) || |
| 417 | ((void*) ptr == state->end)); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 418 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 419 | case SRE_AT_END_LINE: |
| 420 | return ((void*) ptr == state->end || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 421 | SRE_IS_LINEBREAK((int) ptr[0])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 422 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 423 | case SRE_AT_END_STRING: |
| 424 | return ((void*) ptr == state->end); |
| 425 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 426 | case SRE_AT_BOUNDARY: |
| 427 | if (state->beginning == state->end) |
| 428 | return 0; |
| 429 | that = ((void*) ptr > state->beginning) ? |
| 430 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 431 | this = ((void*) ptr < state->end) ? |
| 432 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 433 | return this != that; |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 434 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 435 | case SRE_AT_NON_BOUNDARY: |
| 436 | if (state->beginning == state->end) |
| 437 | return 0; |
| 438 | that = ((void*) ptr > state->beginning) ? |
| 439 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 440 | this = ((void*) ptr < state->end) ? |
| 441 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 442 | return this == that; |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 443 | |
| 444 | case SRE_AT_LOC_BOUNDARY: |
| 445 | if (state->beginning == state->end) |
| 446 | return 0; |
| 447 | that = ((void*) ptr > state->beginning) ? |
| 448 | SRE_LOC_IS_WORD((int) ptr[-1]) : 0; |
| 449 | this = ((void*) ptr < state->end) ? |
| 450 | SRE_LOC_IS_WORD((int) ptr[0]) : 0; |
| 451 | return this != that; |
| 452 | |
| 453 | case SRE_AT_LOC_NON_BOUNDARY: |
| 454 | if (state->beginning == state->end) |
| 455 | return 0; |
| 456 | that = ((void*) ptr > state->beginning) ? |
| 457 | SRE_LOC_IS_WORD((int) ptr[-1]) : 0; |
| 458 | this = ((void*) ptr < state->end) ? |
| 459 | SRE_LOC_IS_WORD((int) ptr[0]) : 0; |
| 460 | return this == that; |
| 461 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 462 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 463 | case SRE_AT_UNI_BOUNDARY: |
| 464 | if (state->beginning == state->end) |
| 465 | return 0; |
| 466 | that = ((void*) ptr > state->beginning) ? |
| 467 | SRE_UNI_IS_WORD((int) ptr[-1]) : 0; |
| 468 | this = ((void*) ptr < state->end) ? |
| 469 | SRE_UNI_IS_WORD((int) ptr[0]) : 0; |
| 470 | return this != that; |
| 471 | |
| 472 | case SRE_AT_UNI_NON_BOUNDARY: |
| 473 | if (state->beginning == state->end) |
| 474 | return 0; |
| 475 | that = ((void*) ptr > state->beginning) ? |
| 476 | SRE_UNI_IS_WORD((int) ptr[-1]) : 0; |
| 477 | this = ((void*) ptr < state->end) ? |
| 478 | SRE_UNI_IS_WORD((int) ptr[0]) : 0; |
| 479 | return this == that; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 480 | #endif |
| 481 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 482 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 483 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 484 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 485 | } |
| 486 | |
| 487 | LOCAL(int) |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 488 | SRE_CHARSET(SRE_CODE* set, SRE_CODE ch) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 489 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 490 | /* check if character is a member of the given set */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 491 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 492 | int ok = 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 493 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 494 | for (;;) { |
| 495 | switch (*set++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 496 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 497 | case SRE_OP_LITERAL: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 498 | /* <LITERAL> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 499 | if (ch == set[0]) |
| 500 | return ok; |
| 501 | set++; |
| 502 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 503 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 504 | case SRE_OP_RANGE: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 505 | /* <RANGE> <lower> <upper> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 506 | if (set[0] <= ch && ch <= set[1]) |
| 507 | return ok; |
| 508 | set += 2; |
| 509 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 510 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 511 | case SRE_OP_CHARSET: |
Martin v. Löwis | 78e2f06 | 2003-04-19 12:56:08 +0000 | [diff] [blame] | 512 | if (sizeof(SRE_CODE) == 2) { |
| 513 | /* <CHARSET> <bitmap> (16 bits per code word) */ |
| 514 | if (ch < 256 && (set[ch >> 4] & (1 << (ch & 15)))) |
| 515 | return ok; |
| 516 | set += 16; |
| 517 | } |
| 518 | else { |
| 519 | /* <CHARSET> <bitmap> (32 bits per code word) */ |
| 520 | if (ch < 256 && (set[ch >> 5] & (1 << (ch & 31)))) |
| 521 | return ok; |
| 522 | set += 8; |
| 523 | } |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 524 | break; |
| 525 | |
Fredrik Lundh | f71ae46 | 2001-07-02 17:04:48 +0000 | [diff] [blame] | 526 | case SRE_OP_BIGCHARSET: |
| 527 | /* <BIGCHARSET> <blockcount> <256 blockindices> <blocks> */ |
| 528 | { |
| 529 | int count, block; |
| 530 | count = *(set++); |
Martin v. Löwis | 78e2f06 | 2003-04-19 12:56:08 +0000 | [diff] [blame] | 531 | |
| 532 | if (sizeof(SRE_CODE) == 2) { |
| 533 | block = ((unsigned char*)set)[ch >> 8]; |
| 534 | set += 128; |
| 535 | if (set[block*16 + ((ch & 255)>>4)] & (1 << (ch & 15))) |
| 536 | return ok; |
| 537 | set += count*16; |
| 538 | } |
| 539 | else { |
| 540 | if (ch < 65536) |
| 541 | block = ((unsigned char*)set)[ch >> 8]; |
| 542 | else |
| 543 | block = -1; |
| 544 | set += 64; |
| 545 | if (block >=0 && |
| 546 | (set[block*8 + ((ch & 255)>>5)] & (1 << (ch & 31)))) |
| 547 | return ok; |
| 548 | set += count*8; |
| 549 | } |
Fredrik Lundh | f71ae46 | 2001-07-02 17:04:48 +0000 | [diff] [blame] | 550 | break; |
| 551 | } |
Fredrik Lundh | 19af43d | 2001-07-02 16:58:38 +0000 | [diff] [blame] | 552 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 553 | case SRE_OP_CATEGORY: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 554 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 555 | if (sre_category(set[0], (int) ch)) |
| 556 | return ok; |
| 557 | set += 1; |
| 558 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 559 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 560 | case SRE_OP_NEGATE: |
| 561 | ok = !ok; |
| 562 | break; |
| 563 | |
| 564 | case SRE_OP_FAILURE: |
| 565 | return !ok; |
| 566 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 567 | default: |
| 568 | /* internal error -- there's not much we can do about it |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 569 | here, so let's just pretend it didn't match... */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 570 | return 0; |
| 571 | } |
| 572 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 573 | } |
| 574 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 575 | LOCAL(int) SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level); |
| 576 | |
| 577 | LOCAL(int) |
| 578 | SRE_COUNT(SRE_STATE* state, SRE_CODE* pattern, int maxcount, int level) |
| 579 | { |
| 580 | SRE_CODE chr; |
| 581 | SRE_CHAR* ptr = state->ptr; |
| 582 | SRE_CHAR* end = state->end; |
| 583 | int i; |
| 584 | |
| 585 | /* adjust end */ |
| 586 | if (maxcount < end - ptr && maxcount != 65535) |
| 587 | end = ptr + maxcount; |
| 588 | |
| 589 | switch (pattern[0]) { |
| 590 | |
| 591 | case SRE_OP_ANY: |
| 592 | /* repeated dot wildcard. */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 593 | TRACE(("|%p|%p|COUNT ANY\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 594 | while (ptr < end && !SRE_IS_LINEBREAK(*ptr)) |
| 595 | ptr++; |
| 596 | break; |
| 597 | |
| 598 | case SRE_OP_ANY_ALL: |
| 599 | /* repeated dot wildcare. skip to the end of the target |
| 600 | string, and backtrack from there */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 601 | TRACE(("|%p|%p|COUNT ANY_ALL\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 602 | ptr = end; |
| 603 | break; |
| 604 | |
| 605 | case SRE_OP_LITERAL: |
| 606 | /* repeated literal */ |
| 607 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 608 | TRACE(("|%p|%p|COUNT LITERAL %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 609 | while (ptr < end && (SRE_CODE) *ptr == chr) |
| 610 | ptr++; |
| 611 | break; |
| 612 | |
| 613 | case SRE_OP_LITERAL_IGNORE: |
| 614 | /* repeated literal */ |
| 615 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 616 | TRACE(("|%p|%p|COUNT LITERAL_IGNORE %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 617 | while (ptr < end && (SRE_CODE) state->lower(*ptr) == chr) |
| 618 | ptr++; |
| 619 | break; |
| 620 | |
| 621 | case SRE_OP_NOT_LITERAL: |
| 622 | /* repeated non-literal */ |
| 623 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 624 | TRACE(("|%p|%p|COUNT NOT_LITERAL %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 625 | while (ptr < end && (SRE_CODE) *ptr != chr) |
| 626 | ptr++; |
| 627 | break; |
| 628 | |
| 629 | case SRE_OP_NOT_LITERAL_IGNORE: |
| 630 | /* repeated non-literal */ |
| 631 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 632 | TRACE(("|%p|%p|COUNT NOT_LITERAL_IGNORE %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 633 | while (ptr < end && (SRE_CODE) state->lower(*ptr) != chr) |
| 634 | ptr++; |
| 635 | break; |
| 636 | |
| 637 | case SRE_OP_IN: |
| 638 | /* repeated set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 639 | TRACE(("|%p|%p|COUNT IN\n", pattern, ptr)); |
| 640 | while (ptr < end && SRE_CHARSET(pattern + 2, *ptr)) |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 641 | ptr++; |
| 642 | break; |
| 643 | |
| 644 | default: |
| 645 | /* repeated single character pattern */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 646 | TRACE(("|%p|%p|COUNT SUBPATTERN\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 647 | while ((SRE_CHAR*) state->ptr < end) { |
| 648 | i = SRE_MATCH(state, pattern, level); |
| 649 | if (i < 0) |
| 650 | return i; |
| 651 | if (!i) |
| 652 | break; |
| 653 | } |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 654 | TRACE(("|%p|%p|COUNT %d\n", pattern, ptr, |
| 655 | (SRE_CHAR*) state->ptr - ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 656 | return (SRE_CHAR*) state->ptr - ptr; |
| 657 | } |
| 658 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 659 | TRACE(("|%p|%p|COUNT %d\n", pattern, ptr, ptr - (SRE_CHAR*) state->ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 660 | return ptr - (SRE_CHAR*) state->ptr; |
| 661 | } |
| 662 | |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 663 | #if 0 /* not used in this release */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 664 | LOCAL(int) |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 665 | SRE_INFO(SRE_STATE* state, SRE_CODE* pattern) |
| 666 | { |
| 667 | /* check if an SRE_OP_INFO block matches at the current position. |
| 668 | returns the number of SRE_CODE objects to skip if successful, 0 |
| 669 | if no match */ |
| 670 | |
| 671 | SRE_CHAR* end = state->end; |
| 672 | SRE_CHAR* ptr = state->ptr; |
| 673 | int i; |
| 674 | |
| 675 | /* check minimal length */ |
| 676 | if (pattern[3] && (end - ptr) < pattern[3]) |
| 677 | return 0; |
| 678 | |
| 679 | /* check known prefix */ |
| 680 | if (pattern[2] & SRE_INFO_PREFIX && pattern[5] > 1) { |
| 681 | /* <length> <skip> <prefix data> <overlap data> */ |
| 682 | for (i = 0; i < pattern[5]; i++) |
| 683 | if ((SRE_CODE) ptr[i] != pattern[7 + i]) |
| 684 | return 0; |
| 685 | return pattern[0] + 2 * pattern[6]; |
| 686 | } |
| 687 | return pattern[0]; |
| 688 | } |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 689 | #endif |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 690 | |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 691 | /* The macros below should be used to protect recursive SRE_MATCH() |
| 692 | * calls that *failed* and do *not* return immediately (IOW, those |
| 693 | * that will backtrack). Explaining: |
| 694 | * |
| 695 | * - Recursive SRE_MATCH() returned true: that's usually a success |
| 696 | * (besides atypical cases like ASSERT_NOT), therefore there's no |
| 697 | * reason to restore lastmark; |
| 698 | * |
| 699 | * - Recursive SRE_MATCH() returned false but the current SRE_MATCH() |
| 700 | * is returning to the caller: If the current SRE_MATCH() is the |
| 701 | * top function of the recursion, returning false will be a matching |
| 702 | * failure, and it doesn't matter where lastmark is pointing to. |
| 703 | * If it's *not* the top function, it will be a recursive SRE_MATCH() |
| 704 | * failure by itself, and the calling SRE_MATCH() will have to deal |
| 705 | * with the failure by the same rules explained here (it will restore |
| 706 | * lastmark by itself if necessary); |
| 707 | * |
| 708 | * - Recursive SRE_MATCH() returned false, and will continue the |
| 709 | * outside 'for' loop: must be protected when breaking, since the next |
| 710 | * OP could potentially depend on lastmark; |
| 711 | * |
| 712 | * - Recursive SRE_MATCH() returned false, and will be called again |
| 713 | * inside a local for/while loop: must be protected between each |
| 714 | * loop iteration, since the recursive SRE_MATCH() could do anything, |
| 715 | * and could potentially depend on lastmark. |
| 716 | * |
| 717 | * For more information, check the discussion at SF patch #712900. |
| 718 | */ |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 719 | #define LASTMARK_SAVE() \ |
| 720 | do { \ |
| 721 | lastmark = state->lastmark; \ |
| 722 | lastindex = state->lastindex; \ |
| 723 | } while (0) |
| 724 | #define LASTMARK_RESTORE() \ |
| 725 | do { \ |
| 726 | if (state->lastmark > lastmark) { \ |
| 727 | memset(state->mark + lastmark + 1, 0, \ |
| 728 | (state->lastmark - lastmark) * sizeof(void*)); \ |
| 729 | state->lastmark = lastmark; \ |
| 730 | state->lastindex = lastindex; \ |
| 731 | } \ |
| 732 | } while (0) |
| 733 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 734 | LOCAL(int) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 735 | SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 736 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 737 | /* check if string matches the given pattern. returns <0 for |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 738 | error, 0 for failure, and 1 for success */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 739 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 740 | SRE_CHAR* end = state->end; |
| 741 | SRE_CHAR* ptr = state->ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 742 | int i, count; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 743 | SRE_REPEAT* rp; |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 744 | int lastmark, lastindex, mark_stack_base; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 745 | SRE_CODE chr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 746 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 747 | SRE_REPEAT rep; /* FIXME: <fl> allocate in STATE instead */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 748 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 749 | TRACE(("|%p|%p|ENTER %d\n", pattern, ptr, level)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 750 | |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 751 | #if defined(USE_STACKCHECK) |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 752 | if (level % 10 == 0 && PyOS_CheckStack()) |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 753 | return SRE_ERROR_RECURSION_LIMIT; |
| 754 | #endif |
| 755 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 756 | #if defined(USE_RECURSION_LIMIT) |
| 757 | if (level > USE_RECURSION_LIMIT) |
| 758 | return SRE_ERROR_RECURSION_LIMIT; |
| 759 | #endif |
| 760 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 761 | if (pattern[0] == SRE_OP_INFO) { |
| 762 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 763 | /* <INFO> <1=skip> <2=flags> <3=min> ... */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 764 | if (pattern[3] && (end - ptr) < pattern[3]) { |
| 765 | TRACE(("reject (got %d chars, need %d)\n", |
| 766 | (end - ptr), pattern[3])); |
| 767 | return 0; |
| 768 | } |
| 769 | pattern += pattern[1] + 1; |
| 770 | } |
| 771 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 772 | for (;;) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 773 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 774 | switch (*pattern++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 775 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 776 | case SRE_OP_FAILURE: |
| 777 | /* immediate failure */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 778 | TRACE(("|%p|%p|FAILURE\n", pattern, ptr)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 779 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 780 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 781 | case SRE_OP_SUCCESS: |
| 782 | /* end of pattern */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 783 | TRACE(("|%p|%p|SUCCESS\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 784 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 785 | return 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 786 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 787 | case SRE_OP_AT: |
| 788 | /* match at given position */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 789 | /* <AT> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 790 | TRACE(("|%p|%p|AT %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 791 | if (!SRE_AT(state, ptr, *pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 792 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 793 | pattern++; |
| 794 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 795 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 796 | case SRE_OP_CATEGORY: |
| 797 | /* match at given category */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 798 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 799 | TRACE(("|%p|%p|CATEGORY %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 800 | if (ptr >= end || !sre_category(pattern[0], ptr[0])) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 801 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 802 | pattern++; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 803 | ptr++; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 804 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 805 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 806 | case SRE_OP_LITERAL: |
| 807 | /* match literal string */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 808 | /* <LITERAL> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 809 | TRACE(("|%p|%p|LITERAL %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 810 | if (ptr >= end || (SRE_CODE) ptr[0] != pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 811 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 812 | pattern++; |
| 813 | ptr++; |
| 814 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 815 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 816 | case SRE_OP_NOT_LITERAL: |
| 817 | /* match anything that is not literal character */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 818 | /* <NOT_LITERAL> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 819 | TRACE(("|%p|%p|NOT_LITERAL %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 820 | if (ptr >= end || (SRE_CODE) ptr[0] == pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 821 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 822 | pattern++; |
| 823 | ptr++; |
| 824 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 825 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 826 | case SRE_OP_ANY: |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 827 | /* match anything (except a newline) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 828 | /* <ANY> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 829 | TRACE(("|%p|%p|ANY\n", pattern, ptr)); |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 830 | if (ptr >= end || SRE_IS_LINEBREAK(ptr[0])) |
| 831 | return 0; |
| 832 | ptr++; |
| 833 | break; |
| 834 | |
| 835 | case SRE_OP_ANY_ALL: |
| 836 | /* match anything */ |
| 837 | /* <ANY_ALL> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 838 | TRACE(("|%p|%p|ANY_ALL\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 839 | if (ptr >= end) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 840 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 841 | ptr++; |
| 842 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 843 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 844 | case SRE_OP_IN: |
| 845 | /* match set member (or non_member) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 846 | /* <IN> <skip> <set> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 847 | TRACE(("|%p|%p|IN\n", pattern, ptr)); |
| 848 | if (ptr >= end || !SRE_CHARSET(pattern + 1, *ptr)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 849 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 850 | pattern += pattern[0]; |
| 851 | ptr++; |
| 852 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 853 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 854 | case SRE_OP_GROUPREF: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 855 | /* match backreference */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 856 | TRACE(("|%p|%p|GROUPREF %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 857 | i = pattern[0]; |
| 858 | { |
| 859 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 860 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 861 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 862 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 863 | while (p < e) { |
| 864 | if (ptr >= end || *ptr != *p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 865 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 866 | p++; ptr++; |
| 867 | } |
| 868 | } |
| 869 | pattern++; |
| 870 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 871 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 872 | case SRE_OP_GROUPREF_IGNORE: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 873 | /* match backreference */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 874 | TRACE(("|%p|%p|GROUPREF_IGNORE %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 875 | i = pattern[0]; |
| 876 | { |
| 877 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 878 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 879 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 880 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 881 | while (p < e) { |
| 882 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 883 | state->lower(*ptr) != state->lower(*p)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 884 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 885 | p++; ptr++; |
| 886 | } |
| 887 | } |
| 888 | pattern++; |
| 889 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 890 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 891 | case SRE_OP_LITERAL_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 892 | TRACE(("|%p|%p|LITERAL_IGNORE %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 893 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 894 | state->lower(*ptr) != state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 895 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 896 | pattern++; |
| 897 | ptr++; |
| 898 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 899 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 900 | case SRE_OP_NOT_LITERAL_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 901 | TRACE(("|%p|%p|NOT_LITERAL_IGNORE %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 902 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 903 | state->lower(*ptr) == state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 904 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 905 | pattern++; |
| 906 | ptr++; |
| 907 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 908 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 909 | case SRE_OP_IN_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 910 | TRACE(("|%p|%p|IN_IGNORE\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 911 | if (ptr >= end |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 912 | || !SRE_CHARSET(pattern + 1, (SRE_CODE) state->lower(*ptr))) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 913 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 914 | pattern += pattern[0]; |
| 915 | ptr++; |
| 916 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 917 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 918 | case SRE_OP_MARK: |
| 919 | /* set mark */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 920 | /* <MARK> <gid> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 921 | TRACE(("|%p|%p|MARK %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 922 | i = pattern[0]; |
Gustavo Niemeyer | 1aca359 | 2003-04-20 00:45:13 +0000 | [diff] [blame] | 923 | if (i & 1) |
| 924 | state->lastindex = i/2 + 1; |
| 925 | if (i > state->lastmark) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 926 | state->lastmark = i; |
| 927 | state->mark[i] = ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 928 | pattern++; |
| 929 | break; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 930 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 931 | case SRE_OP_JUMP: |
| 932 | case SRE_OP_INFO: |
| 933 | /* jump forward */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 934 | /* <JUMP> <offset> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 935 | TRACE(("|%p|%p|JUMP %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 936 | pattern += pattern[0]; |
| 937 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 938 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 939 | case SRE_OP_ASSERT: |
| 940 | /* assert subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 941 | /* <ASSERT> <skip> <back> <pattern> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 942 | TRACE(("|%p|%p|ASSERT %d\n", pattern, ptr, pattern[1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 943 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 944 | if (state->ptr < state->beginning) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 945 | return 0; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 946 | i = SRE_MATCH(state, pattern + 2, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 947 | if (i <= 0) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 948 | return i; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 949 | pattern += pattern[0]; |
| 950 | break; |
Fredrik Lundh | 43b3b49 | 2000-06-30 10:41:31 +0000 | [diff] [blame] | 951 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 952 | case SRE_OP_ASSERT_NOT: |
| 953 | /* assert not subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 954 | /* <ASSERT_NOT> <skip> <back> <pattern> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 955 | TRACE(("|%p|%p|ASSERT_NOT %d\n", pattern, ptr, pattern[1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 956 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 957 | if (state->ptr >= state->beginning) { |
| 958 | i = SRE_MATCH(state, pattern + 2, level + 1); |
| 959 | if (i < 0) |
| 960 | return i; |
| 961 | if (i) |
| 962 | return 0; |
| 963 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 964 | pattern += pattern[0]; |
| 965 | break; |
| 966 | |
| 967 | case SRE_OP_BRANCH: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 968 | /* alternation */ |
| 969 | /* <BRANCH> <0=skip> code <JUMP> ... <NULL> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 970 | TRACE(("|%p|%p|BRANCH\n", pattern, ptr)); |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 971 | LASTMARK_SAVE(); |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 972 | if (state->repeat) { |
| 973 | i = mark_save(state, 0, lastmark, &mark_stack_base); |
| 974 | if (i < 0) |
| 975 | return i; |
| 976 | } |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 977 | for (; pattern[0]; pattern += pattern[0]) { |
| 978 | if (pattern[1] == SRE_OP_LITERAL && |
| 979 | (ptr >= end || (SRE_CODE) *ptr != pattern[2])) |
| 980 | continue; |
| 981 | if (pattern[1] == SRE_OP_IN && |
| 982 | (ptr >= end || !SRE_CHARSET(pattern + 3, (SRE_CODE) *ptr))) |
| 983 | continue; |
| 984 | state->ptr = ptr; |
| 985 | i = SRE_MATCH(state, pattern + 1, level + 1); |
| 986 | if (i) |
| 987 | return i; |
Gustavo Niemeyer | c34f255 | 2003-04-27 12:34:14 +0000 | [diff] [blame] | 988 | if (state->repeat) { |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 989 | i = mark_restore(state, 0, lastmark, &mark_stack_base); |
Gustavo Niemeyer | c34f255 | 2003-04-27 12:34:14 +0000 | [diff] [blame] | 990 | if (i < 0) |
| 991 | return i; |
| 992 | } |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 993 | LASTMARK_RESTORE(); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 994 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 995 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 996 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 997 | case SRE_OP_REPEAT_ONE: |
| 998 | /* match repeated sequence (maximizing regexp) */ |
| 999 | |
| 1000 | /* this operator only works if the repeated item is |
| 1001 | exactly one character wide, and we're not already |
| 1002 | collecting backtracking points. for other cases, |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1003 | use the MAX_REPEAT operator */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1004 | |
| 1005 | /* <REPEAT_ONE> <skip> <1=min> <2=max> item <SUCCESS> tail */ |
| 1006 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1007 | TRACE(("|%p|%p|REPEAT_ONE %d %d\n", pattern, ptr, |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1008 | pattern[1], pattern[2])); |
| 1009 | |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 1010 | if (ptr + pattern[1] > end) |
| 1011 | return 0; /* cannot match */ |
| 1012 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1013 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1014 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1015 | count = SRE_COUNT(state, pattern + 3, pattern[2], level + 1); |
| 1016 | if (count < 0) |
| 1017 | return count; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 1018 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1019 | ptr += count; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1020 | |
| 1021 | /* when we arrive here, count contains the number of |
| 1022 | matches, and ptr points to the tail of the target |
| 1023 | string. check if the rest of the pattern matches, |
| 1024 | and backtrack if not. */ |
| 1025 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1026 | if (count < (int) pattern[1]) |
| 1027 | return 0; |
| 1028 | |
| 1029 | if (pattern[pattern[0]] == SRE_OP_SUCCESS) { |
| 1030 | /* tail is empty. we're finished */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1031 | state->ptr = ptr; |
| 1032 | return 1; |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 1033 | } |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1034 | |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 1035 | LASTMARK_SAVE(); |
| 1036 | |
| 1037 | if (pattern[pattern[0]] == SRE_OP_LITERAL) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1038 | /* tail starts with a literal. skip positions where |
| 1039 | the rest of the pattern cannot possibly match */ |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 1040 | chr = pattern[pattern[0]+1]; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1041 | for (;;) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1042 | while (count >= (int) pattern[1] && |
| 1043 | (ptr >= end || *ptr != chr)) { |
| 1044 | ptr--; |
| 1045 | count--; |
| 1046 | } |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1047 | if (count < (int) pattern[1]) |
| 1048 | break; |
| 1049 | state->ptr = ptr; |
| 1050 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1051 | if (i) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1052 | return i; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1053 | ptr--; |
| 1054 | count--; |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 1055 | LASTMARK_RESTORE(); |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | } else { |
| 1059 | /* general case */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1060 | while (count >= (int) pattern[1]) { |
| 1061 | state->ptr = ptr; |
| 1062 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1063 | if (i) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1064 | return i; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1065 | ptr--; |
| 1066 | count--; |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 1067 | LASTMARK_RESTORE(); |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1068 | } |
| 1069 | } |
| 1070 | return 0; |
| 1071 | |
Guido van Rossum | 41c99e7 | 2003-04-14 17:59:34 +0000 | [diff] [blame] | 1072 | case SRE_OP_MIN_REPEAT_ONE: |
| 1073 | /* match repeated sequence (minimizing regexp) */ |
| 1074 | |
| 1075 | /* this operator only works if the repeated item is |
| 1076 | exactly one character wide, and we're not already |
| 1077 | collecting backtracking points. for other cases, |
| 1078 | use the MIN_REPEAT operator */ |
| 1079 | |
| 1080 | /* <MIN_REPEAT_ONE> <skip> <1=min> <2=max> item <SUCCESS> tail */ |
| 1081 | |
| 1082 | TRACE(("|%p|%p|MIN_REPEAT_ONE %d %d\n", pattern, ptr, |
| 1083 | pattern[1], pattern[2])); |
| 1084 | |
| 1085 | if (ptr + pattern[1] > end) |
| 1086 | return 0; /* cannot match */ |
| 1087 | |
| 1088 | state->ptr = ptr; |
| 1089 | |
| 1090 | if (pattern[1] == 0) |
| 1091 | count = 0; |
| 1092 | else { |
| 1093 | /* count using pattern min as the maximum */ |
| 1094 | count = SRE_COUNT(state, pattern + 3, pattern[1], level + 1); |
| 1095 | |
| 1096 | if (count < 0) |
| 1097 | return count; /* exception */ |
| 1098 | if (count < (int) pattern[1]) |
| 1099 | return 0; /* did not match minimum number of times */ |
| 1100 | ptr += count; /* advance past minimum matches of repeat */ |
| 1101 | } |
| 1102 | |
| 1103 | if (pattern[pattern[0]] == SRE_OP_SUCCESS) { |
| 1104 | /* tail is empty. we're finished */ |
| 1105 | state->ptr = ptr; |
| 1106 | return 1; |
| 1107 | |
| 1108 | } else { |
| 1109 | /* general case */ |
| 1110 | int matchmax = ((int)pattern[2] == 65535); |
| 1111 | int c; |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 1112 | LASTMARK_SAVE(); |
Guido van Rossum | 41c99e7 | 2003-04-14 17:59:34 +0000 | [diff] [blame] | 1113 | while (matchmax || count <= (int) pattern[2]) { |
| 1114 | state->ptr = ptr; |
| 1115 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
| 1116 | if (i) |
| 1117 | return i; |
| 1118 | state->ptr = ptr; |
| 1119 | c = SRE_COUNT(state, pattern+3, 1, level+1); |
| 1120 | if (c < 0) |
| 1121 | return c; |
| 1122 | if (c == 0) |
| 1123 | break; |
| 1124 | assert(c == 1); |
| 1125 | ptr++; |
| 1126 | count++; |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 1127 | LASTMARK_RESTORE(); |
Guido van Rossum | 41c99e7 | 2003-04-14 17:59:34 +0000 | [diff] [blame] | 1128 | } |
Guido van Rossum | 41c99e7 | 2003-04-14 17:59:34 +0000 | [diff] [blame] | 1129 | } |
| 1130 | return 0; |
| 1131 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1132 | case SRE_OP_REPEAT: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1133 | /* create repeat context. all the hard work is done |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1134 | by the UNTIL operator (MAX_UNTIL, MIN_UNTIL) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1135 | /* <REPEAT> <skip> <1=min> <2=max> item <UNTIL> tail */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1136 | TRACE(("|%p|%p|REPEAT %d %d\n", pattern, ptr, |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1137 | pattern[1], pattern[2])); |
| 1138 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1139 | rep.count = -1; |
| 1140 | rep.pattern = pattern; |
| 1141 | |
| 1142 | /* install new repeat context */ |
| 1143 | rep.prev = state->repeat; |
| 1144 | state->repeat = &rep; |
| 1145 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1146 | state->ptr = ptr; |
| 1147 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1148 | |
| 1149 | state->repeat = rep.prev; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1150 | |
| 1151 | return i; |
| 1152 | |
| 1153 | case SRE_OP_MAX_UNTIL: |
| 1154 | /* maximizing repeat */ |
| 1155 | /* <REPEAT> <skip> <1=min> <2=max> item <MAX_UNTIL> tail */ |
| 1156 | |
| 1157 | /* FIXME: we probably need to deal with zero-width |
| 1158 | matches in here... */ |
| 1159 | |
| 1160 | rp = state->repeat; |
| 1161 | if (!rp) |
| 1162 | return SRE_ERROR_STATE; |
| 1163 | |
| 1164 | state->ptr = ptr; |
| 1165 | |
| 1166 | count = rp->count + 1; |
| 1167 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1168 | TRACE(("|%p|%p|MAX_UNTIL %d\n", pattern, ptr, count)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1169 | |
| 1170 | if (count < rp->pattern[1]) { |
| 1171 | /* not enough matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1172 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1173 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1174 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1175 | if (i) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1176 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1177 | rp->count = count - 1; |
| 1178 | state->ptr = ptr; |
| 1179 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1180 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1181 | |
| 1182 | if (count < rp->pattern[2] || rp->pattern[2] == 65535) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1183 | /* we may have enough matches, but if we can |
| 1184 | match another item, do so */ |
| 1185 | rp->count = count; |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 1186 | LASTMARK_SAVE(); |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 1187 | i = mark_save(state, 0, lastmark, &mark_stack_base); |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1188 | if (i < 0) |
| 1189 | return i; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1190 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1191 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1192 | if (i) |
| 1193 | return i; |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 1194 | i = mark_restore(state, 0, lastmark, &mark_stack_base); |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1195 | if (i < 0) |
| 1196 | return i; |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 1197 | LASTMARK_RESTORE(); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1198 | rp->count = count - 1; |
| 1199 | state->ptr = ptr; |
| 1200 | } |
| 1201 | |
| 1202 | /* cannot match more repeated items here. make sure the |
| 1203 | tail matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1204 | state->repeat = rp->prev; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1205 | i = SRE_MATCH(state, pattern, level + 1); |
| 1206 | if (i) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1207 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1208 | state->repeat = rp; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1209 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1210 | return 0; |
| 1211 | |
| 1212 | case SRE_OP_MIN_UNTIL: |
| 1213 | /* minimizing repeat */ |
| 1214 | /* <REPEAT> <skip> <1=min> <2=max> item <MIN_UNTIL> tail */ |
| 1215 | |
| 1216 | rp = state->repeat; |
| 1217 | if (!rp) |
| 1218 | return SRE_ERROR_STATE; |
| 1219 | |
Gustavo Niemeyer | 3c9068b | 2003-04-22 15:39:09 +0000 | [diff] [blame] | 1220 | state->ptr = ptr; |
| 1221 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1222 | count = rp->count + 1; |
| 1223 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1224 | TRACE(("|%p|%p|MIN_UNTIL %d %p\n", pattern, ptr, count, |
| 1225 | rp->pattern)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1226 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1227 | if (count < rp->pattern[1]) { |
| 1228 | /* not enough matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1229 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1230 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1231 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1232 | if (i) |
| 1233 | return i; |
| 1234 | rp->count = count-1; |
| 1235 | state->ptr = ptr; |
| 1236 | return 0; |
| 1237 | } |
| 1238 | |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 1239 | LASTMARK_SAVE(); |
| 1240 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1241 | /* see if the tail matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1242 | state->repeat = rp->prev; |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 1243 | i = SRE_MATCH(state, pattern, level + 1); |
| 1244 | if (i) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1245 | return i; |
Fredrik Lundh | fa25a7d | 2001-01-14 23:55:55 +0000 | [diff] [blame] | 1246 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1247 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1248 | state->repeat = rp; |
| 1249 | |
| 1250 | if (count >= rp->pattern[2] && rp->pattern[2] != 65535) |
| 1251 | return 0; |
| 1252 | |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 1253 | LASTMARK_RESTORE(); |
| 1254 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1255 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1256 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1257 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1258 | if (i) |
| 1259 | return i; |
| 1260 | rp->count = count - 1; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1261 | state->ptr = ptr; |
Gustavo Niemeyer | caf1c9d | 2003-04-27 14:42:54 +0000 | [diff] [blame] | 1262 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1263 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1264 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1265 | default: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1266 | TRACE(("|%p|%p|UNKNOWN %d\n", pattern, ptr, pattern[-1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1267 | return SRE_ERROR_ILLEGAL; |
| 1268 | } |
| 1269 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1270 | |
Sjoerd Mullender | 89dfe9e | 2001-08-30 14:37:07 +0000 | [diff] [blame] | 1271 | /* can't end up here */ |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 1272 | /* return SRE_ERROR_ILLEGAL; -- see python-dev discussion */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1273 | } |
| 1274 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1275 | LOCAL(int) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1276 | SRE_SEARCH(SRE_STATE* state, SRE_CODE* pattern) |
| 1277 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1278 | SRE_CHAR* ptr = state->start; |
| 1279 | SRE_CHAR* end = state->end; |
| 1280 | int status = 0; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1281 | int prefix_len = 0; |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1282 | int prefix_skip = 0; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1283 | SRE_CODE* prefix = NULL; |
| 1284 | SRE_CODE* charset = NULL; |
| 1285 | SRE_CODE* overlap = NULL; |
| 1286 | int flags = 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1287 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1288 | if (pattern[0] == SRE_OP_INFO) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1289 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1290 | /* <INFO> <1=skip> <2=flags> <3=min> <4=max> <5=prefix info> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1291 | |
| 1292 | flags = pattern[2]; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1293 | |
| 1294 | if (pattern[3] > 0) { |
| 1295 | /* adjust end point (but make sure we leave at least one |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1296 | character in there, so literal search will work) */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1297 | end -= pattern[3]-1; |
| 1298 | if (end <= ptr) |
| 1299 | end = ptr+1; |
| 1300 | } |
| 1301 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1302 | if (flags & SRE_INFO_PREFIX) { |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1303 | /* pattern starts with a known prefix */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1304 | /* <length> <skip> <prefix data> <overlap data> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1305 | prefix_len = pattern[5]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1306 | prefix_skip = pattern[6]; |
| 1307 | prefix = pattern + 7; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1308 | overlap = prefix + prefix_len - 1; |
| 1309 | } else if (flags & SRE_INFO_CHARSET) |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1310 | /* pattern starts with a character from a known set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1311 | /* <charset> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1312 | charset = pattern + 5; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1313 | |
| 1314 | pattern += 1 + pattern[1]; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1315 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1316 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1317 | TRACE(("prefix = %p %d %d\n", prefix, prefix_len, prefix_skip)); |
| 1318 | TRACE(("charset = %p\n", charset)); |
| 1319 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1320 | #if defined(USE_FAST_SEARCH) |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1321 | if (prefix_len > 1) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1322 | /* pattern starts with a known prefix. use the overlap |
| 1323 | table to skip forward as fast as we possibly can */ |
| 1324 | int i = 0; |
| 1325 | end = state->end; |
| 1326 | while (ptr < end) { |
| 1327 | for (;;) { |
Fredrik Lundh | 0640e11 | 2000-06-30 13:55:15 +0000 | [diff] [blame] | 1328 | if ((SRE_CODE) ptr[0] != prefix[i]) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1329 | if (!i) |
| 1330 | break; |
| 1331 | else |
| 1332 | i = overlap[i]; |
| 1333 | } else { |
| 1334 | if (++i == prefix_len) { |
| 1335 | /* found a potential match */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1336 | TRACE(("|%p|%p|SEARCH SCAN\n", pattern, ptr)); |
| 1337 | state->start = ptr + 1 - prefix_len; |
| 1338 | state->ptr = ptr + 1 - prefix_len + prefix_skip; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1339 | if (flags & SRE_INFO_LITERAL) |
| 1340 | return 1; /* we got all of it */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1341 | status = SRE_MATCH(state, pattern + 2*prefix_skip, 1); |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1342 | if (status != 0) |
| 1343 | return status; |
| 1344 | /* close but no cigar -- try again */ |
| 1345 | i = overlap[i]; |
| 1346 | } |
| 1347 | break; |
| 1348 | } |
| 1349 | |
| 1350 | } |
| 1351 | ptr++; |
| 1352 | } |
| 1353 | return 0; |
| 1354 | } |
| 1355 | #endif |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 1356 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1357 | if (pattern[0] == SRE_OP_LITERAL) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1358 | /* pattern starts with a literal character. this is used |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1359 | for short prefixes, and if fast search is disabled */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1360 | SRE_CODE chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1361 | end = state->end; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1362 | for (;;) { |
| 1363 | while (ptr < end && (SRE_CODE) ptr[0] != chr) |
| 1364 | ptr++; |
Gustavo Niemeyer | c523b04 | 2002-11-07 03:28:56 +0000 | [diff] [blame] | 1365 | if (ptr >= end) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1366 | return 0; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1367 | TRACE(("|%p|%p|SEARCH LITERAL\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1368 | state->start = ptr; |
| 1369 | state->ptr = ++ptr; |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 1370 | if (flags & SRE_INFO_LITERAL) |
| 1371 | return 1; /* we got all of it */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1372 | status = SRE_MATCH(state, pattern + 2, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1373 | if (status != 0) |
| 1374 | break; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1375 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1376 | } else if (charset) { |
| 1377 | /* pattern starts with a character from a known set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1378 | end = state->end; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1379 | for (;;) { |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1380 | while (ptr < end && !SRE_CHARSET(charset, ptr[0])) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1381 | ptr++; |
Gustavo Niemeyer | c523b04 | 2002-11-07 03:28:56 +0000 | [diff] [blame] | 1382 | if (ptr >= end) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1383 | return 0; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1384 | TRACE(("|%p|%p|SEARCH CHARSET\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1385 | state->start = ptr; |
| 1386 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1387 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1388 | if (status != 0) |
| 1389 | break; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1390 | ptr++; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1391 | } |
| 1392 | } else |
| 1393 | /* general case */ |
| 1394 | while (ptr <= end) { |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1395 | TRACE(("|%p|%p|SEARCH\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1396 | state->start = state->ptr = ptr++; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1397 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1398 | if (status != 0) |
| 1399 | break; |
| 1400 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1401 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1402 | return status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1403 | } |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1404 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1405 | LOCAL(int) |
| 1406 | SRE_LITERAL_TEMPLATE(SRE_CHAR* ptr, int len) |
| 1407 | { |
| 1408 | /* check if given string is a literal template (i.e. no escapes) */ |
| 1409 | while (len-- > 0) |
| 1410 | if (*ptr++ == '\\') |
| 1411 | return 0; |
| 1412 | return 1; |
| 1413 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1414 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1415 | #if !defined(SRE_RECURSIVE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1416 | |
| 1417 | /* -------------------------------------------------------------------- */ |
| 1418 | /* factories and destructors */ |
| 1419 | |
| 1420 | /* see sre.h for object declarations */ |
| 1421 | |
Jeremy Hylton | 938ace6 | 2002-07-17 16:30:39 +0000 | [diff] [blame] | 1422 | static PyTypeObject Pattern_Type; |
| 1423 | static PyTypeObject Match_Type; |
| 1424 | static PyTypeObject Scanner_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1425 | |
| 1426 | static PyObject * |
| 1427 | _compile(PyObject* self_, PyObject* args) |
| 1428 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1429 | /* "compile" pattern descriptor to pattern object */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1430 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1431 | PatternObject* self; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1432 | int i, n; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1433 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1434 | PyObject* pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1435 | int flags = 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1436 | PyObject* code; |
| 1437 | int groups = 0; |
| 1438 | PyObject* groupindex = NULL; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1439 | PyObject* indexgroup = NULL; |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1440 | if (!PyArg_ParseTuple(args, "OiO!|iOO", &pattern, &flags, |
| 1441 | &PyList_Type, &code, &groups, |
| 1442 | &groupindex, &indexgroup)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1443 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1444 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1445 | n = PyList_GET_SIZE(code); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1446 | |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 1447 | self = PyObject_NEW_VAR(PatternObject, &Pattern_Type, n); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1448 | if (!self) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1449 | return NULL; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1450 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1451 | self->codesize = n; |
| 1452 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1453 | for (i = 0; i < n; i++) { |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1454 | PyObject *o = PyList_GET_ITEM(code, i); |
Martin v. Löwis | 78e2f06 | 2003-04-19 12:56:08 +0000 | [diff] [blame] | 1455 | if (PyInt_Check(o)) |
| 1456 | self->code[i] = (SRE_CODE) PyInt_AsLong(o); |
| 1457 | else |
| 1458 | self->code[i] = (SRE_CODE) PyLong_AsUnsignedLong(o); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1459 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1460 | |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1461 | if (PyErr_Occurred()) { |
| 1462 | PyObject_DEL(self); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1463 | return NULL; |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1464 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1465 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1466 | Py_INCREF(pattern); |
| 1467 | self->pattern = pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1468 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1469 | self->flags = flags; |
| 1470 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1471 | self->groups = groups; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1472 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1473 | Py_XINCREF(groupindex); |
| 1474 | self->groupindex = groupindex; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1475 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1476 | Py_XINCREF(indexgroup); |
| 1477 | self->indexgroup = indexgroup; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1478 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1479 | return (PyObject*) self; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1480 | } |
| 1481 | |
| 1482 | static PyObject * |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1483 | sre_codesize(PyObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1484 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1485 | return Py_BuildValue("i", sizeof(SRE_CODE)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1486 | } |
| 1487 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1488 | static PyObject * |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1489 | sre_getlower(PyObject* self, PyObject* args) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1490 | { |
| 1491 | int character, flags; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1492 | if (!PyArg_ParseTuple(args, "ii", &character, &flags)) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1493 | return NULL; |
| 1494 | if (flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1495 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1496 | if (flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1497 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1498 | return Py_BuildValue("i", sre_lower_unicode(character)); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1499 | #else |
| 1500 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1501 | #endif |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1502 | return Py_BuildValue("i", sre_lower(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1505 | LOCAL(void) |
| 1506 | state_reset(SRE_STATE* state) |
| 1507 | { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1508 | state->lastmark = 0; |
| 1509 | |
| 1510 | /* FIXME: dynamic! */ |
Neal Norwitz | 35fc760 | 2002-06-13 21:11:11 +0000 | [diff] [blame] | 1511 | memset(state->mark, 0, sizeof(*state->mark) * SRE_MARK_SIZE); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1512 | |
| 1513 | state->lastindex = -1; |
| 1514 | |
| 1515 | state->repeat = NULL; |
| 1516 | |
| 1517 | mark_fini(state); |
| 1518 | } |
| 1519 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1520 | static void* |
| 1521 | getstring(PyObject* string, int* p_length, int* p_charsize) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1522 | { |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1523 | /* given a python object, return a data pointer, a length (in |
| 1524 | characters), and a character size. return NULL if the object |
| 1525 | is not a string (or not compatible) */ |
| 1526 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1527 | PyBufferProcs *buffer; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1528 | int size, bytes, charsize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1529 | void* ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1530 | |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1531 | #if defined(HAVE_UNICODE) |
| 1532 | if (PyUnicode_Check(string)) { |
| 1533 | /* unicode strings doesn't always support the buffer interface */ |
| 1534 | ptr = (void*) PyUnicode_AS_DATA(string); |
| 1535 | bytes = PyUnicode_GET_DATA_SIZE(string); |
| 1536 | size = PyUnicode_GET_SIZE(string); |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1537 | charsize = sizeof(Py_UNICODE); |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1538 | |
| 1539 | } else { |
| 1540 | #endif |
| 1541 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1542 | /* get pointer to string buffer */ |
| 1543 | buffer = string->ob_type->tp_as_buffer; |
| 1544 | if (!buffer || !buffer->bf_getreadbuffer || !buffer->bf_getsegcount || |
| 1545 | buffer->bf_getsegcount(string, NULL) != 1) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1546 | PyErr_SetString(PyExc_TypeError, "expected string or buffer"); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1547 | return NULL; |
| 1548 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1549 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1550 | /* determine buffer size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1551 | bytes = buffer->bf_getreadbuffer(string, 0, &ptr); |
| 1552 | if (bytes < 0) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1553 | PyErr_SetString(PyExc_TypeError, "buffer has negative size"); |
| 1554 | return NULL; |
| 1555 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1556 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1557 | /* determine character size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1558 | #if PY_VERSION_HEX >= 0x01060000 |
| 1559 | size = PyObject_Size(string); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1560 | #else |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1561 | size = PyObject_Length(string); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1562 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1563 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1564 | if (PyString_Check(string) || bytes == size) |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1565 | charsize = 1; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1566 | #if defined(HAVE_UNICODE) |
| 1567 | else if (bytes == (int) (size * sizeof(Py_UNICODE))) |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1568 | charsize = sizeof(Py_UNICODE); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1569 | #endif |
| 1570 | else { |
| 1571 | PyErr_SetString(PyExc_TypeError, "buffer size mismatch"); |
| 1572 | return NULL; |
| 1573 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1574 | |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1575 | #if defined(HAVE_UNICODE) |
| 1576 | } |
| 1577 | #endif |
| 1578 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1579 | *p_length = size; |
| 1580 | *p_charsize = charsize; |
| 1581 | |
| 1582 | return ptr; |
| 1583 | } |
| 1584 | |
| 1585 | LOCAL(PyObject*) |
| 1586 | state_init(SRE_STATE* state, PatternObject* pattern, PyObject* string, |
| 1587 | int start, int end) |
| 1588 | { |
| 1589 | /* prepare state object */ |
| 1590 | |
| 1591 | int length; |
| 1592 | int charsize; |
| 1593 | void* ptr; |
| 1594 | |
| 1595 | memset(state, 0, sizeof(SRE_STATE)); |
| 1596 | |
| 1597 | state->lastindex = -1; |
| 1598 | |
| 1599 | ptr = getstring(string, &length, &charsize); |
| 1600 | if (!ptr) |
| 1601 | return NULL; |
| 1602 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1603 | /* adjust boundaries */ |
| 1604 | if (start < 0) |
| 1605 | start = 0; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1606 | else if (start > length) |
| 1607 | start = length; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1608 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1609 | if (end < 0) |
| 1610 | end = 0; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 1611 | else if (end > length) |
| 1612 | end = length; |
| 1613 | |
| 1614 | state->charsize = charsize; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1615 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1616 | state->beginning = ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1617 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1618 | state->start = (void*) ((char*) ptr + start * state->charsize); |
| 1619 | state->end = (void*) ((char*) ptr + end * state->charsize); |
| 1620 | |
| 1621 | Py_INCREF(string); |
| 1622 | state->string = string; |
| 1623 | state->pos = start; |
| 1624 | state->endpos = end; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1625 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1626 | if (pattern->flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1627 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1628 | else if (pattern->flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1629 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1630 | state->lower = sre_lower_unicode; |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1631 | #else |
| 1632 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1633 | #endif |
| 1634 | else |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1635 | state->lower = sre_lower; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1636 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1637 | return string; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1638 | } |
| 1639 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1640 | LOCAL(void) |
| 1641 | state_fini(SRE_STATE* state) |
| 1642 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1643 | Py_XDECREF(state->string); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1644 | mark_fini(state); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1645 | } |
| 1646 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1647 | /* calculate offset from start of string */ |
| 1648 | #define STATE_OFFSET(state, member)\ |
| 1649 | (((char*)(member) - (char*)(state)->beginning) / (state)->charsize) |
| 1650 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1651 | LOCAL(PyObject*) |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1652 | state_getslice(SRE_STATE* state, int index, PyObject* string, int empty) |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1653 | { |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1654 | int i, j; |
| 1655 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1656 | index = (index - 1) * 2; |
| 1657 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1658 | if (string == Py_None || !state->mark[index] || !state->mark[index+1]) { |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1659 | if (empty) |
| 1660 | /* want empty string */ |
| 1661 | i = j = 0; |
| 1662 | else { |
| 1663 | Py_INCREF(Py_None); |
| 1664 | return Py_None; |
| 1665 | } |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1666 | } else { |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1667 | i = STATE_OFFSET(state, state->mark[index]); |
| 1668 | j = STATE_OFFSET(state, state->mark[index+1]); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1669 | } |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1670 | |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1671 | return PySequence_GetSlice(string, i, j); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1672 | } |
| 1673 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1674 | static void |
| 1675 | pattern_error(int status) |
| 1676 | { |
| 1677 | switch (status) { |
| 1678 | case SRE_ERROR_RECURSION_LIMIT: |
| 1679 | PyErr_SetString( |
| 1680 | PyExc_RuntimeError, |
| 1681 | "maximum recursion limit exceeded" |
| 1682 | ); |
| 1683 | break; |
| 1684 | case SRE_ERROR_MEMORY: |
| 1685 | PyErr_NoMemory(); |
| 1686 | break; |
| 1687 | default: |
| 1688 | /* other error codes indicate compiler/engine bugs */ |
| 1689 | PyErr_SetString( |
| 1690 | PyExc_RuntimeError, |
| 1691 | "internal error in regular expression engine" |
| 1692 | ); |
| 1693 | } |
| 1694 | } |
| 1695 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1696 | static PyObject* |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1697 | pattern_new_match(PatternObject* pattern, SRE_STATE* state, int status) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1698 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1699 | /* create match object (from state object) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1700 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1701 | MatchObject* match; |
| 1702 | int i, j; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1703 | char* base; |
| 1704 | int n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1705 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1706 | if (status > 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1707 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1708 | /* create match object (with room for extra group marks) */ |
| 1709 | match = PyObject_NEW_VAR(MatchObject, &Match_Type, |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1710 | 2*(pattern->groups+1)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1711 | if (!match) |
| 1712 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1713 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1714 | Py_INCREF(pattern); |
| 1715 | match->pattern = pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1716 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1717 | Py_INCREF(state->string); |
| 1718 | match->string = state->string; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1719 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1720 | match->regs = NULL; |
| 1721 | match->groups = pattern->groups+1; |
| 1722 | |
| 1723 | /* fill in group slices */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1724 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1725 | base = (char*) state->beginning; |
| 1726 | n = state->charsize; |
| 1727 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1728 | match->mark[0] = ((char*) state->start - base) / n; |
| 1729 | match->mark[1] = ((char*) state->ptr - base) / n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1730 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1731 | for (i = j = 0; i < pattern->groups; i++, j+=2) |
| 1732 | if (j+1 <= state->lastmark && state->mark[j] && state->mark[j+1]) { |
| 1733 | match->mark[j+2] = ((char*) state->mark[j] - base) / n; |
| 1734 | match->mark[j+3] = ((char*) state->mark[j+1] - base) / n; |
| 1735 | } else |
| 1736 | match->mark[j+2] = match->mark[j+3] = -1; /* undefined */ |
| 1737 | |
| 1738 | match->pos = state->pos; |
| 1739 | match->endpos = state->endpos; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1740 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1741 | match->lastindex = state->lastindex; |
| 1742 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1743 | return (PyObject*) match; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1744 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1745 | } else if (status == 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1746 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1747 | /* no match */ |
| 1748 | Py_INCREF(Py_None); |
| 1749 | return Py_None; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1750 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1751 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1752 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1753 | /* internal error */ |
| 1754 | pattern_error(status); |
| 1755 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1756 | } |
| 1757 | |
| 1758 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1759 | pattern_scanner(PatternObject* pattern, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1760 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1761 | /* create search state object */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1762 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1763 | ScannerObject* self; |
| 1764 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1765 | PyObject* string; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1766 | int start = 0; |
| 1767 | int end = INT_MAX; |
| 1768 | if (!PyArg_ParseTuple(args, "O|ii:scanner", &string, &start, &end)) |
| 1769 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1770 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1771 | /* create scanner object */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1772 | self = PyObject_NEW(ScannerObject, &Scanner_Type); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1773 | if (!self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1774 | return NULL; |
| 1775 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1776 | string = state_init(&self->state, pattern, string, start, end); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1777 | if (!string) { |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1778 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1779 | return NULL; |
| 1780 | } |
| 1781 | |
| 1782 | Py_INCREF(pattern); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1783 | self->pattern = (PyObject*) pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1784 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1785 | return (PyObject*) self; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1786 | } |
| 1787 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1788 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1789 | pattern_dealloc(PatternObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1790 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1791 | Py_XDECREF(self->pattern); |
| 1792 | Py_XDECREF(self->groupindex); |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1793 | Py_XDECREF(self->indexgroup); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1794 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1795 | } |
| 1796 | |
| 1797 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1798 | pattern_match(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1799 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1800 | SRE_STATE state; |
| 1801 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1802 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1803 | PyObject* string; |
| 1804 | int start = 0; |
| 1805 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1806 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
| 1807 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:match", kwlist, |
| 1808 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1809 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1810 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1811 | string = state_init(&state, self, string, start, end); |
| 1812 | if (!string) |
| 1813 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1814 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1815 | state.ptr = state.start; |
| 1816 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1817 | TRACE(("|%p|%p|MATCH\n", PatternObject_GetCode(self), state.ptr)); |
| 1818 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1819 | if (state.charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1820 | status = sre_match(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1821 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1822 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1823 | status = sre_umatch(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1824 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1825 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1826 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1827 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
| 1828 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1829 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1830 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1831 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1832 | } |
| 1833 | |
| 1834 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1835 | pattern_search(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1836 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1837 | SRE_STATE state; |
| 1838 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1839 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1840 | PyObject* string; |
| 1841 | int start = 0; |
| 1842 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1843 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
| 1844 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:search", kwlist, |
| 1845 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1846 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1847 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1848 | string = state_init(&state, self, string, start, end); |
| 1849 | if (!string) |
| 1850 | return NULL; |
| 1851 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1852 | TRACE(("|%p|%p|SEARCH\n", PatternObject_GetCode(self), state.ptr)); |
| 1853 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1854 | if (state.charsize == 1) { |
| 1855 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1856 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1857 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1858 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1859 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1860 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1861 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1862 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
| 1863 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1864 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1865 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1866 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1867 | } |
| 1868 | |
| 1869 | static PyObject* |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1870 | call(char* module, char* function, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1871 | { |
| 1872 | PyObject* name; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1873 | PyObject* mod; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1874 | PyObject* func; |
| 1875 | PyObject* result; |
| 1876 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1877 | if (!args) |
| 1878 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1879 | name = PyString_FromString(module); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1880 | if (!name) |
| 1881 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1882 | mod = PyImport_Import(name); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1883 | Py_DECREF(name); |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1884 | if (!mod) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1885 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1886 | func = PyObject_GetAttrString(mod, function); |
| 1887 | Py_DECREF(mod); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1888 | if (!func) |
| 1889 | return NULL; |
| 1890 | result = PyObject_CallObject(func, args); |
| 1891 | Py_DECREF(func); |
| 1892 | Py_DECREF(args); |
| 1893 | return result; |
| 1894 | } |
| 1895 | |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1896 | #ifdef USE_BUILTIN_COPY |
| 1897 | static int |
| 1898 | deepcopy(PyObject** object, PyObject* memo) |
| 1899 | { |
| 1900 | PyObject* copy; |
| 1901 | |
| 1902 | copy = call( |
| 1903 | "copy", "deepcopy", |
| 1904 | Py_BuildValue("OO", *object, memo) |
| 1905 | ); |
| 1906 | if (!copy) |
| 1907 | return 0; |
| 1908 | |
| 1909 | Py_DECREF(*object); |
| 1910 | *object = copy; |
| 1911 | |
| 1912 | return 1; /* success */ |
| 1913 | } |
| 1914 | #endif |
| 1915 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1916 | static PyObject* |
Michael W. Hudson | b6a4505 | 2002-07-31 09:54:24 +0000 | [diff] [blame] | 1917 | join_list(PyObject* list, PyObject* pattern) |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1918 | { |
| 1919 | /* join list elements */ |
| 1920 | |
| 1921 | PyObject* joiner; |
| 1922 | #if PY_VERSION_HEX >= 0x01060000 |
| 1923 | PyObject* function; |
| 1924 | PyObject* args; |
| 1925 | #endif |
| 1926 | PyObject* result; |
| 1927 | |
| 1928 | switch (PyList_GET_SIZE(list)) { |
| 1929 | case 0: |
| 1930 | Py_DECREF(list); |
Fredrik Lundh | 09705f0 | 2002-11-22 12:46:35 +0000 | [diff] [blame] | 1931 | return PySequence_GetSlice(pattern, 0, 0); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1932 | case 1: |
| 1933 | result = PyList_GET_ITEM(list, 0); |
| 1934 | Py_INCREF(result); |
| 1935 | Py_DECREF(list); |
| 1936 | return result; |
| 1937 | } |
| 1938 | |
| 1939 | /* two or more elements: slice out a suitable separator from the |
| 1940 | first member, and use that to join the entire list */ |
| 1941 | |
| 1942 | joiner = PySequence_GetSlice(pattern, 0, 0); |
| 1943 | if (!joiner) |
| 1944 | return NULL; |
| 1945 | |
| 1946 | #if PY_VERSION_HEX >= 0x01060000 |
| 1947 | function = PyObject_GetAttrString(joiner, "join"); |
| 1948 | if (!function) { |
| 1949 | Py_DECREF(joiner); |
| 1950 | return NULL; |
| 1951 | } |
| 1952 | args = PyTuple_New(1); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 1953 | if (!args) { |
| 1954 | Py_DECREF(function); |
| 1955 | Py_DECREF(joiner); |
| 1956 | return NULL; |
| 1957 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1958 | PyTuple_SET_ITEM(args, 0, list); |
| 1959 | result = PyObject_CallObject(function, args); |
| 1960 | Py_DECREF(args); /* also removes list */ |
| 1961 | Py_DECREF(function); |
| 1962 | #else |
| 1963 | result = call( |
| 1964 | "string", "join", |
| 1965 | Py_BuildValue("OO", list, joiner) |
| 1966 | ); |
| 1967 | #endif |
| 1968 | Py_DECREF(joiner); |
| 1969 | |
| 1970 | return result; |
| 1971 | } |
| 1972 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1973 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1974 | pattern_findall(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1975 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1976 | SRE_STATE state; |
| 1977 | PyObject* list; |
| 1978 | int status; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1979 | int i, b, e; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1980 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1981 | PyObject* string; |
| 1982 | int start = 0; |
| 1983 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1984 | static char* kwlist[] = { "source", "pos", "endpos", NULL }; |
| 1985 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:findall", kwlist, |
| 1986 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1987 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1988 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1989 | string = state_init(&state, self, string, start, end); |
| 1990 | if (!string) |
| 1991 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1992 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1993 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 1994 | if (!list) { |
| 1995 | state_fini(&state); |
| 1996 | return NULL; |
| 1997 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1998 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1999 | while (state.start <= state.end) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2000 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2001 | PyObject* item; |
| 2002 | |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 2003 | state_reset(&state); |
| 2004 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2005 | state.ptr = state.start; |
| 2006 | |
| 2007 | if (state.charsize == 1) { |
| 2008 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 2009 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2010 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2011 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2012 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2013 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2014 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2015 | if (status <= 0) { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2016 | if (status == 0) |
| 2017 | break; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 2018 | pattern_error(status); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2019 | goto error; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2020 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2021 | |
| 2022 | /* don't bother to build a match object */ |
| 2023 | switch (self->groups) { |
| 2024 | case 0: |
| 2025 | b = STATE_OFFSET(&state, state.start); |
| 2026 | e = STATE_OFFSET(&state, state.ptr); |
| 2027 | item = PySequence_GetSlice(string, b, e); |
| 2028 | if (!item) |
| 2029 | goto error; |
| 2030 | break; |
| 2031 | case 1: |
| 2032 | item = state_getslice(&state, 1, string, 1); |
| 2033 | if (!item) |
| 2034 | goto error; |
| 2035 | break; |
| 2036 | default: |
| 2037 | item = PyTuple_New(self->groups); |
| 2038 | if (!item) |
| 2039 | goto error; |
| 2040 | for (i = 0; i < self->groups; i++) { |
| 2041 | PyObject* o = state_getslice(&state, i+1, string, 1); |
| 2042 | if (!o) { |
| 2043 | Py_DECREF(item); |
| 2044 | goto error; |
| 2045 | } |
| 2046 | PyTuple_SET_ITEM(item, i, o); |
| 2047 | } |
| 2048 | break; |
| 2049 | } |
| 2050 | |
| 2051 | status = PyList_Append(list, item); |
| 2052 | Py_DECREF(item); |
| 2053 | if (status < 0) |
| 2054 | goto error; |
| 2055 | |
| 2056 | if (state.ptr == state.start) |
| 2057 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 2058 | else |
| 2059 | state.start = state.ptr; |
| 2060 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2061 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2062 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2063 | state_fini(&state); |
| 2064 | return list; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2065 | |
| 2066 | error: |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2067 | Py_DECREF(list); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2068 | state_fini(&state); |
| 2069 | return NULL; |
| 2070 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2071 | } |
| 2072 | |
Fredrik Lundh | 703ce81 | 2001-10-24 22:16:30 +0000 | [diff] [blame] | 2073 | #if PY_VERSION_HEX >= 0x02020000 |
| 2074 | static PyObject* |
| 2075 | pattern_finditer(PatternObject* pattern, PyObject* args) |
| 2076 | { |
| 2077 | PyObject* scanner; |
| 2078 | PyObject* search; |
| 2079 | PyObject* iterator; |
| 2080 | |
| 2081 | scanner = pattern_scanner(pattern, args); |
| 2082 | if (!scanner) |
| 2083 | return NULL; |
| 2084 | |
| 2085 | search = PyObject_GetAttrString(scanner, "search"); |
| 2086 | Py_DECREF(scanner); |
| 2087 | if (!search) |
| 2088 | return NULL; |
| 2089 | |
| 2090 | iterator = PyCallIter_New(search, Py_None); |
| 2091 | Py_DECREF(search); |
| 2092 | |
| 2093 | return iterator; |
| 2094 | } |
| 2095 | #endif |
| 2096 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2097 | static PyObject* |
| 2098 | pattern_split(PatternObject* self, PyObject* args, PyObject* kw) |
| 2099 | { |
| 2100 | SRE_STATE state; |
| 2101 | PyObject* list; |
| 2102 | PyObject* item; |
| 2103 | int status; |
| 2104 | int n; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2105 | int i; |
| 2106 | void* last; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2107 | |
| 2108 | PyObject* string; |
| 2109 | int maxsplit = 0; |
| 2110 | static char* kwlist[] = { "source", "maxsplit", NULL }; |
| 2111 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|i:split", kwlist, |
| 2112 | &string, &maxsplit)) |
| 2113 | return NULL; |
| 2114 | |
| 2115 | string = state_init(&state, self, string, 0, INT_MAX); |
| 2116 | if (!string) |
| 2117 | return NULL; |
| 2118 | |
| 2119 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 2120 | if (!list) { |
| 2121 | state_fini(&state); |
| 2122 | return NULL; |
| 2123 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2124 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2125 | n = 0; |
| 2126 | last = state.start; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2127 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2128 | while (!maxsplit || n < maxsplit) { |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2129 | |
| 2130 | state_reset(&state); |
| 2131 | |
| 2132 | state.ptr = state.start; |
| 2133 | |
| 2134 | if (state.charsize == 1) { |
| 2135 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 2136 | } else { |
| 2137 | #if defined(HAVE_UNICODE) |
| 2138 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
| 2139 | #endif |
| 2140 | } |
| 2141 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2142 | if (status <= 0) { |
| 2143 | if (status == 0) |
| 2144 | break; |
| 2145 | pattern_error(status); |
| 2146 | goto error; |
| 2147 | } |
| 2148 | |
| 2149 | if (state.start == state.ptr) { |
| 2150 | if (last == state.end) |
| 2151 | break; |
| 2152 | /* skip one character */ |
| 2153 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 2154 | continue; |
| 2155 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2156 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2157 | /* get segment before this match */ |
| 2158 | item = PySequence_GetSlice( |
| 2159 | string, STATE_OFFSET(&state, last), |
| 2160 | STATE_OFFSET(&state, state.start) |
| 2161 | ); |
| 2162 | if (!item) |
| 2163 | goto error; |
| 2164 | status = PyList_Append(list, item); |
| 2165 | Py_DECREF(item); |
| 2166 | if (status < 0) |
| 2167 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2168 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2169 | /* add groups (if any) */ |
| 2170 | for (i = 0; i < self->groups; i++) { |
| 2171 | item = state_getslice(&state, i+1, string, 0); |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2172 | if (!item) |
| 2173 | goto error; |
| 2174 | status = PyList_Append(list, item); |
| 2175 | Py_DECREF(item); |
| 2176 | if (status < 0) |
| 2177 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2178 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2179 | |
| 2180 | n = n + 1; |
| 2181 | |
| 2182 | last = state.start = state.ptr; |
| 2183 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2184 | } |
| 2185 | |
Fredrik Lundh | f864aa8 | 2001-10-22 06:01:56 +0000 | [diff] [blame] | 2186 | /* get segment following last match (even if empty) */ |
| 2187 | item = PySequence_GetSlice( |
| 2188 | string, STATE_OFFSET(&state, last), state.endpos |
| 2189 | ); |
| 2190 | if (!item) |
| 2191 | goto error; |
| 2192 | status = PyList_Append(list, item); |
| 2193 | Py_DECREF(item); |
| 2194 | if (status < 0) |
| 2195 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2196 | |
| 2197 | state_fini(&state); |
| 2198 | return list; |
| 2199 | |
| 2200 | error: |
| 2201 | Py_DECREF(list); |
| 2202 | state_fini(&state); |
| 2203 | return NULL; |
| 2204 | |
| 2205 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2206 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2207 | static PyObject* |
| 2208 | pattern_subx(PatternObject* self, PyObject* template, PyObject* string, |
| 2209 | int count, int subn) |
| 2210 | { |
| 2211 | SRE_STATE state; |
| 2212 | PyObject* list; |
| 2213 | PyObject* item; |
| 2214 | PyObject* filter; |
| 2215 | PyObject* args; |
| 2216 | PyObject* match; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 2217 | void* ptr; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2218 | int status; |
| 2219 | int n; |
| 2220 | int i, b, e; |
| 2221 | int filter_is_callable; |
| 2222 | |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2223 | if (PyCallable_Check(template)) { |
| 2224 | /* sub/subn takes either a function or a template */ |
| 2225 | filter = template; |
| 2226 | Py_INCREF(filter); |
| 2227 | filter_is_callable = 1; |
| 2228 | } else { |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 2229 | /* if not callable, check if it's a literal string */ |
| 2230 | int literal; |
| 2231 | ptr = getstring(template, &n, &b); |
| 2232 | if (ptr) { |
| 2233 | if (b == 1) { |
| 2234 | literal = sre_literal_template(ptr, n); |
| 2235 | } else { |
| 2236 | #if defined(HAVE_UNICODE) |
| 2237 | literal = sre_uliteral_template(ptr, n); |
| 2238 | #endif |
| 2239 | } |
| 2240 | } else { |
| 2241 | PyErr_Clear(); |
| 2242 | literal = 0; |
| 2243 | } |
| 2244 | if (literal) { |
| 2245 | filter = template; |
| 2246 | Py_INCREF(filter); |
| 2247 | filter_is_callable = 0; |
| 2248 | } else { |
| 2249 | /* not a literal; hand it over to the template compiler */ |
| 2250 | filter = call( |
| 2251 | SRE_MODULE, "_subx", |
| 2252 | Py_BuildValue("OO", self, template) |
| 2253 | ); |
| 2254 | if (!filter) |
| 2255 | return NULL; |
| 2256 | filter_is_callable = PyCallable_Check(filter); |
| 2257 | } |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2258 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2259 | |
| 2260 | string = state_init(&state, self, string, 0, INT_MAX); |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 2261 | if (!string) { |
| 2262 | Py_DECREF(filter); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2263 | return NULL; |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 2264 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2265 | |
| 2266 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 2267 | if (!list) { |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 2268 | Py_DECREF(filter); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 2269 | state_fini(&state); |
| 2270 | return NULL; |
| 2271 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2272 | |
| 2273 | n = i = 0; |
| 2274 | |
| 2275 | while (!count || n < count) { |
| 2276 | |
| 2277 | state_reset(&state); |
| 2278 | |
| 2279 | state.ptr = state.start; |
| 2280 | |
| 2281 | if (state.charsize == 1) { |
| 2282 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 2283 | } else { |
| 2284 | #if defined(HAVE_UNICODE) |
| 2285 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
| 2286 | #endif |
| 2287 | } |
| 2288 | |
| 2289 | if (status <= 0) { |
| 2290 | if (status == 0) |
| 2291 | break; |
| 2292 | pattern_error(status); |
| 2293 | goto error; |
| 2294 | } |
| 2295 | |
| 2296 | b = STATE_OFFSET(&state, state.start); |
| 2297 | e = STATE_OFFSET(&state, state.ptr); |
| 2298 | |
| 2299 | if (i < b) { |
| 2300 | /* get segment before this match */ |
| 2301 | item = PySequence_GetSlice(string, i, b); |
| 2302 | if (!item) |
| 2303 | goto error; |
| 2304 | status = PyList_Append(list, item); |
| 2305 | Py_DECREF(item); |
| 2306 | if (status < 0) |
| 2307 | goto error; |
| 2308 | |
| 2309 | } else if (i == b && i == e && n > 0) |
| 2310 | /* ignore empty match on latest position */ |
| 2311 | goto next; |
| 2312 | |
| 2313 | if (filter_is_callable) { |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2314 | /* pass match object through filter */ |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2315 | match = pattern_new_match(self, &state, 1); |
| 2316 | if (!match) |
| 2317 | goto error; |
| 2318 | args = Py_BuildValue("(O)", match); |
| 2319 | if (!args) { |
Guido van Rossum | 4e17384 | 2001-12-07 04:25:10 +0000 | [diff] [blame] | 2320 | Py_DECREF(match); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2321 | goto error; |
| 2322 | } |
| 2323 | item = PyObject_CallObject(filter, args); |
| 2324 | Py_DECREF(args); |
| 2325 | Py_DECREF(match); |
| 2326 | if (!item) |
| 2327 | goto error; |
| 2328 | } else { |
| 2329 | /* filter is literal string */ |
| 2330 | item = filter; |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2331 | Py_INCREF(item); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2332 | } |
| 2333 | |
| 2334 | /* add to list */ |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 2335 | if (item != Py_None) { |
| 2336 | status = PyList_Append(list, item); |
| 2337 | Py_DECREF(item); |
| 2338 | if (status < 0) |
| 2339 | goto error; |
| 2340 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2341 | |
| 2342 | i = e; |
| 2343 | n = n + 1; |
| 2344 | |
| 2345 | next: |
| 2346 | /* move on */ |
| 2347 | if (state.ptr == state.start) |
| 2348 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 2349 | else |
| 2350 | state.start = state.ptr; |
| 2351 | |
| 2352 | } |
| 2353 | |
| 2354 | /* get segment following last match */ |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2355 | if (i < state.endpos) { |
| 2356 | item = PySequence_GetSlice(string, i, state.endpos); |
| 2357 | if (!item) |
| 2358 | goto error; |
| 2359 | status = PyList_Append(list, item); |
| 2360 | Py_DECREF(item); |
| 2361 | if (status < 0) |
| 2362 | goto error; |
| 2363 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2364 | |
| 2365 | state_fini(&state); |
| 2366 | |
Guido van Rossum | 4e17384 | 2001-12-07 04:25:10 +0000 | [diff] [blame] | 2367 | Py_DECREF(filter); |
| 2368 | |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2369 | /* convert list to single string (also removes list) */ |
Michael W. Hudson | b6a4505 | 2002-07-31 09:54:24 +0000 | [diff] [blame] | 2370 | item = join_list(list, self->pattern); |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2371 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2372 | if (!item) |
| 2373 | return NULL; |
| 2374 | |
| 2375 | if (subn) |
| 2376 | return Py_BuildValue("Ni", item, n); |
| 2377 | |
| 2378 | return item; |
| 2379 | |
| 2380 | error: |
| 2381 | Py_DECREF(list); |
| 2382 | state_fini(&state); |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 2383 | Py_DECREF(filter); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2384 | return NULL; |
| 2385 | |
| 2386 | } |
| 2387 | |
| 2388 | static PyObject* |
| 2389 | pattern_sub(PatternObject* self, PyObject* args, PyObject* kw) |
| 2390 | { |
| 2391 | PyObject* template; |
| 2392 | PyObject* string; |
| 2393 | int count = 0; |
| 2394 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
| 2395 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|i:sub", kwlist, |
| 2396 | &template, &string, &count)) |
| 2397 | return NULL; |
| 2398 | |
| 2399 | return pattern_subx(self, template, string, count, 0); |
| 2400 | } |
| 2401 | |
| 2402 | static PyObject* |
| 2403 | pattern_subn(PatternObject* self, PyObject* args, PyObject* kw) |
| 2404 | { |
| 2405 | PyObject* template; |
| 2406 | PyObject* string; |
| 2407 | int count = 0; |
| 2408 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
| 2409 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|i:subn", kwlist, |
| 2410 | &template, &string, &count)) |
| 2411 | return NULL; |
| 2412 | |
| 2413 | return pattern_subx(self, template, string, count, 1); |
| 2414 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2415 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2416 | static PyObject* |
| 2417 | pattern_copy(PatternObject* self, PyObject* args) |
| 2418 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2419 | #ifdef USE_BUILTIN_COPY |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2420 | PatternObject* copy; |
| 2421 | int offset; |
| 2422 | |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2423 | if (args != Py_None && !PyArg_ParseTuple(args, ":__copy__")) |
| 2424 | return NULL; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2425 | |
| 2426 | copy = PyObject_NEW_VAR(PatternObject, &Pattern_Type, self->codesize); |
| 2427 | if (!copy) |
| 2428 | return NULL; |
| 2429 | |
| 2430 | offset = offsetof(PatternObject, groups); |
| 2431 | |
| 2432 | Py_XINCREF(self->groupindex); |
| 2433 | Py_XINCREF(self->indexgroup); |
| 2434 | Py_XINCREF(self->pattern); |
| 2435 | |
| 2436 | memcpy((char*) copy + offset, (char*) self + offset, |
| 2437 | sizeof(PatternObject) + self->codesize * sizeof(SRE_CODE) - offset); |
| 2438 | |
| 2439 | return (PyObject*) copy; |
| 2440 | #else |
| 2441 | PyErr_SetString(PyExc_TypeError, "cannot copy this pattern object"); |
| 2442 | return NULL; |
| 2443 | #endif |
| 2444 | } |
| 2445 | |
| 2446 | static PyObject* |
| 2447 | pattern_deepcopy(PatternObject* self, PyObject* args) |
| 2448 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2449 | #ifdef USE_BUILTIN_COPY |
| 2450 | PatternObject* copy; |
| 2451 | |
| 2452 | PyObject* memo; |
| 2453 | if (!PyArg_ParseTuple(args, "O:__deepcopy__", &memo)) |
| 2454 | return NULL; |
| 2455 | |
| 2456 | copy = (PatternObject*) pattern_copy(self, Py_None); |
| 2457 | if (!copy) |
| 2458 | return NULL; |
| 2459 | |
| 2460 | if (!deepcopy(©->groupindex, memo) || |
| 2461 | !deepcopy(©->indexgroup, memo) || |
| 2462 | !deepcopy(©->pattern, memo)) { |
| 2463 | Py_DECREF(copy); |
| 2464 | return NULL; |
| 2465 | } |
| 2466 | |
| 2467 | #else |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2468 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this pattern object"); |
| 2469 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2470 | #endif |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2471 | } |
| 2472 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2473 | static PyMethodDef pattern_methods[] = { |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2474 | {"match", (PyCFunction) pattern_match, METH_VARARGS|METH_KEYWORDS}, |
| 2475 | {"search", (PyCFunction) pattern_search, METH_VARARGS|METH_KEYWORDS}, |
| 2476 | {"sub", (PyCFunction) pattern_sub, METH_VARARGS|METH_KEYWORDS}, |
| 2477 | {"subn", (PyCFunction) pattern_subn, METH_VARARGS|METH_KEYWORDS}, |
| 2478 | {"split", (PyCFunction) pattern_split, METH_VARARGS|METH_KEYWORDS}, |
| 2479 | {"findall", (PyCFunction) pattern_findall, METH_VARARGS|METH_KEYWORDS}, |
Fredrik Lundh | 703ce81 | 2001-10-24 22:16:30 +0000 | [diff] [blame] | 2480 | #if PY_VERSION_HEX >= 0x02020000 |
| 2481 | {"finditer", (PyCFunction) pattern_finditer, METH_VARARGS}, |
| 2482 | #endif |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2483 | {"scanner", (PyCFunction) pattern_scanner, METH_VARARGS}, |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2484 | {"__copy__", (PyCFunction) pattern_copy, METH_VARARGS}, |
| 2485 | {"__deepcopy__", (PyCFunction) pattern_deepcopy, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2486 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2487 | }; |
| 2488 | |
| 2489 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2490 | pattern_getattr(PatternObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2491 | { |
| 2492 | PyObject* res; |
| 2493 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2494 | res = Py_FindMethod(pattern_methods, (PyObject*) self, name); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2495 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2496 | if (res) |
| 2497 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2498 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2499 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2500 | |
| 2501 | /* attributes */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2502 | if (!strcmp(name, "pattern")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2503 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2504 | return self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2505 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2506 | |
| 2507 | if (!strcmp(name, "flags")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2508 | return Py_BuildValue("i", self->flags); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2509 | |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 2510 | if (!strcmp(name, "groups")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2511 | return Py_BuildValue("i", self->groups); |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 2512 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2513 | if (!strcmp(name, "groupindex") && self->groupindex) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2514 | Py_INCREF(self->groupindex); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2515 | return self->groupindex; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2516 | } |
| 2517 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2518 | PyErr_SetString(PyExc_AttributeError, name); |
| 2519 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2520 | } |
| 2521 | |
| 2522 | statichere PyTypeObject Pattern_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2523 | PyObject_HEAD_INIT(NULL) |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 2524 | 0, "_" SRE_MODULE ".SRE_Pattern", |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2525 | sizeof(PatternObject), sizeof(SRE_CODE), |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2526 | (destructor)pattern_dealloc, /*tp_dealloc*/ |
| 2527 | 0, /*tp_print*/ |
| 2528 | (getattrfunc)pattern_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2529 | }; |
| 2530 | |
| 2531 | /* -------------------------------------------------------------------- */ |
| 2532 | /* match methods */ |
| 2533 | |
| 2534 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2535 | match_dealloc(MatchObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2536 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2537 | Py_XDECREF(self->regs); |
| 2538 | Py_XDECREF(self->string); |
| 2539 | Py_DECREF(self->pattern); |
| 2540 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2541 | } |
| 2542 | |
| 2543 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2544 | match_getslice_by_index(MatchObject* self, int index, PyObject* def) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2545 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2546 | if (index < 0 || index >= self->groups) { |
| 2547 | /* raise IndexError if we were given a bad group number */ |
| 2548 | PyErr_SetString( |
| 2549 | PyExc_IndexError, |
| 2550 | "no such group" |
| 2551 | ); |
| 2552 | return NULL; |
| 2553 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2554 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2555 | index *= 2; |
| 2556 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2557 | if (self->string == Py_None || self->mark[index] < 0) { |
| 2558 | /* return default value if the string or group is undefined */ |
| 2559 | Py_INCREF(def); |
| 2560 | return def; |
| 2561 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2562 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2563 | return PySequence_GetSlice( |
| 2564 | self->string, self->mark[index], self->mark[index+1] |
| 2565 | ); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2566 | } |
| 2567 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2568 | static int |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2569 | match_getindex(MatchObject* self, PyObject* index) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2570 | { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2571 | int i; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2572 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2573 | if (PyInt_Check(index)) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2574 | return (int) PyInt_AS_LONG(index); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2575 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2576 | i = -1; |
| 2577 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2578 | if (self->pattern->groupindex) { |
| 2579 | index = PyObject_GetItem(self->pattern->groupindex, index); |
| 2580 | if (index) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2581 | if (PyInt_Check(index)) |
| 2582 | i = (int) PyInt_AS_LONG(index); |
| 2583 | Py_DECREF(index); |
| 2584 | } else |
| 2585 | PyErr_Clear(); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2586 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2587 | |
| 2588 | return i; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2589 | } |
| 2590 | |
| 2591 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2592 | match_getslice(MatchObject* self, PyObject* index, PyObject* def) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2593 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2594 | return match_getslice_by_index(self, match_getindex(self, index), def); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2595 | } |
| 2596 | |
| 2597 | static PyObject* |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 2598 | match_expand(MatchObject* self, PyObject* args) |
| 2599 | { |
| 2600 | PyObject* template; |
| 2601 | if (!PyArg_ParseTuple(args, "O:expand", &template)) |
| 2602 | return NULL; |
| 2603 | |
| 2604 | /* delegate to Python code */ |
| 2605 | return call( |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2606 | SRE_MODULE, "_expand", |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 2607 | Py_BuildValue("OOO", self->pattern, self, template) |
| 2608 | ); |
| 2609 | } |
| 2610 | |
| 2611 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2612 | match_group(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2613 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2614 | PyObject* result; |
| 2615 | int i, size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2616 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2617 | size = PyTuple_GET_SIZE(args); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2618 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2619 | switch (size) { |
| 2620 | case 0: |
| 2621 | result = match_getslice(self, Py_False, Py_None); |
| 2622 | break; |
| 2623 | case 1: |
| 2624 | result = match_getslice(self, PyTuple_GET_ITEM(args, 0), Py_None); |
| 2625 | break; |
| 2626 | default: |
| 2627 | /* fetch multiple items */ |
| 2628 | result = PyTuple_New(size); |
| 2629 | if (!result) |
| 2630 | return NULL; |
| 2631 | for (i = 0; i < size; i++) { |
| 2632 | PyObject* item = match_getslice( |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2633 | self, PyTuple_GET_ITEM(args, i), Py_None |
| 2634 | ); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2635 | if (!item) { |
| 2636 | Py_DECREF(result); |
| 2637 | return NULL; |
| 2638 | } |
| 2639 | PyTuple_SET_ITEM(result, i, item); |
| 2640 | } |
| 2641 | break; |
| 2642 | } |
| 2643 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2644 | } |
| 2645 | |
| 2646 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2647 | match_groups(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2648 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2649 | PyObject* result; |
| 2650 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2651 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2652 | PyObject* def = Py_None; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2653 | static char* kwlist[] = { "default", NULL }; |
| 2654 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groups", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2655 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2656 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2657 | result = PyTuple_New(self->groups-1); |
| 2658 | if (!result) |
| 2659 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2660 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2661 | for (index = 1; index < self->groups; index++) { |
| 2662 | PyObject* item; |
| 2663 | item = match_getslice_by_index(self, index, def); |
| 2664 | if (!item) { |
| 2665 | Py_DECREF(result); |
| 2666 | return NULL; |
| 2667 | } |
| 2668 | PyTuple_SET_ITEM(result, index-1, item); |
| 2669 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2670 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2671 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2672 | } |
| 2673 | |
| 2674 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2675 | match_groupdict(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2676 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2677 | PyObject* result; |
| 2678 | PyObject* keys; |
| 2679 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2680 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2681 | PyObject* def = Py_None; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2682 | static char* kwlist[] = { "default", NULL }; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2683 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groupdict", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2684 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2685 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2686 | result = PyDict_New(); |
| 2687 | if (!result || !self->pattern->groupindex) |
| 2688 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2689 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2690 | keys = PyMapping_Keys(self->pattern->groupindex); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2691 | if (!keys) |
| 2692 | goto failed; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2693 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2694 | for (index = 0; index < PyList_GET_SIZE(keys); index++) { |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2695 | int status; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2696 | PyObject* key; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2697 | PyObject* value; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2698 | key = PyList_GET_ITEM(keys, index); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2699 | if (!key) |
| 2700 | goto failed; |
| 2701 | value = match_getslice(self, key, def); |
| 2702 | if (!value) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2703 | Py_DECREF(key); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2704 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2705 | } |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2706 | status = PyDict_SetItem(result, key, value); |
| 2707 | Py_DECREF(value); |
| 2708 | if (status < 0) |
| 2709 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2710 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2711 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2712 | Py_DECREF(keys); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2713 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2714 | return result; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2715 | |
| 2716 | failed: |
| 2717 | Py_DECREF(keys); |
| 2718 | Py_DECREF(result); |
| 2719 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2720 | } |
| 2721 | |
| 2722 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2723 | match_start(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2724 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2725 | int index; |
| 2726 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2727 | PyObject* index_ = Py_False; /* zero */ |
| 2728 | if (!PyArg_ParseTuple(args, "|O:start", &index_)) |
| 2729 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2730 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2731 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2732 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2733 | if (index < 0 || index >= self->groups) { |
| 2734 | PyErr_SetString( |
| 2735 | PyExc_IndexError, |
| 2736 | "no such group" |
| 2737 | ); |
| 2738 | return NULL; |
| 2739 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2740 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2741 | /* mark is -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2742 | return Py_BuildValue("i", self->mark[index*2]); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2743 | } |
| 2744 | |
| 2745 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2746 | match_end(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2747 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2748 | int index; |
| 2749 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2750 | PyObject* index_ = Py_False; /* zero */ |
| 2751 | if (!PyArg_ParseTuple(args, "|O:end", &index_)) |
| 2752 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2753 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2754 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2755 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2756 | if (index < 0 || index >= self->groups) { |
| 2757 | PyErr_SetString( |
| 2758 | PyExc_IndexError, |
| 2759 | "no such group" |
| 2760 | ); |
| 2761 | return NULL; |
| 2762 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2763 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2764 | /* mark is -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2765 | return Py_BuildValue("i", self->mark[index*2+1]); |
| 2766 | } |
| 2767 | |
| 2768 | LOCAL(PyObject*) |
| 2769 | _pair(int i1, int i2) |
| 2770 | { |
| 2771 | PyObject* pair; |
| 2772 | PyObject* item; |
| 2773 | |
| 2774 | pair = PyTuple_New(2); |
| 2775 | if (!pair) |
| 2776 | return NULL; |
| 2777 | |
| 2778 | item = PyInt_FromLong(i1); |
| 2779 | if (!item) |
| 2780 | goto error; |
| 2781 | PyTuple_SET_ITEM(pair, 0, item); |
| 2782 | |
| 2783 | item = PyInt_FromLong(i2); |
| 2784 | if (!item) |
| 2785 | goto error; |
| 2786 | PyTuple_SET_ITEM(pair, 1, item); |
| 2787 | |
| 2788 | return pair; |
| 2789 | |
| 2790 | error: |
| 2791 | Py_DECREF(pair); |
| 2792 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2793 | } |
| 2794 | |
| 2795 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2796 | match_span(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2797 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2798 | int index; |
| 2799 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2800 | PyObject* index_ = Py_False; /* zero */ |
| 2801 | if (!PyArg_ParseTuple(args, "|O:span", &index_)) |
| 2802 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2803 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2804 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2805 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2806 | if (index < 0 || index >= self->groups) { |
| 2807 | PyErr_SetString( |
| 2808 | PyExc_IndexError, |
| 2809 | "no such group" |
| 2810 | ); |
| 2811 | return NULL; |
| 2812 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2813 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2814 | /* marks are -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2815 | return _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2816 | } |
| 2817 | |
| 2818 | static PyObject* |
| 2819 | match_regs(MatchObject* self) |
| 2820 | { |
| 2821 | PyObject* regs; |
| 2822 | PyObject* item; |
| 2823 | int index; |
| 2824 | |
| 2825 | regs = PyTuple_New(self->groups); |
| 2826 | if (!regs) |
| 2827 | return NULL; |
| 2828 | |
| 2829 | for (index = 0; index < self->groups; index++) { |
| 2830 | item = _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2831 | if (!item) { |
| 2832 | Py_DECREF(regs); |
| 2833 | return NULL; |
| 2834 | } |
| 2835 | PyTuple_SET_ITEM(regs, index, item); |
| 2836 | } |
| 2837 | |
| 2838 | Py_INCREF(regs); |
| 2839 | self->regs = regs; |
| 2840 | |
| 2841 | return regs; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2842 | } |
| 2843 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2844 | static PyObject* |
| 2845 | match_copy(MatchObject* self, PyObject* args) |
| 2846 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2847 | #ifdef USE_BUILTIN_COPY |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2848 | MatchObject* copy; |
| 2849 | int slots, offset; |
| 2850 | |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2851 | if (args != Py_None && !PyArg_ParseTuple(args, ":__copy__")) |
| 2852 | return NULL; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2853 | |
| 2854 | slots = 2 * (self->pattern->groups+1); |
| 2855 | |
| 2856 | copy = PyObject_NEW_VAR(MatchObject, &Match_Type, slots); |
| 2857 | if (!copy) |
| 2858 | return NULL; |
| 2859 | |
| 2860 | /* this value a constant, but any compiler should be able to |
| 2861 | figure that out all by itself */ |
| 2862 | offset = offsetof(MatchObject, string); |
| 2863 | |
| 2864 | Py_XINCREF(self->pattern); |
| 2865 | Py_XINCREF(self->string); |
| 2866 | Py_XINCREF(self->regs); |
| 2867 | |
| 2868 | memcpy((char*) copy + offset, (char*) self + offset, |
| 2869 | sizeof(MatchObject) + slots * sizeof(int) - offset); |
| 2870 | |
| 2871 | return (PyObject*) copy; |
| 2872 | #else |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2873 | PyErr_SetString(PyExc_TypeError, "cannot copy this match object"); |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2874 | return NULL; |
| 2875 | #endif |
| 2876 | } |
| 2877 | |
| 2878 | static PyObject* |
| 2879 | match_deepcopy(MatchObject* self, PyObject* args) |
| 2880 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2881 | #ifdef USE_BUILTIN_COPY |
| 2882 | MatchObject* copy; |
| 2883 | |
| 2884 | PyObject* memo; |
| 2885 | if (!PyArg_ParseTuple(args, "O:__deepcopy__", &memo)) |
| 2886 | return NULL; |
| 2887 | |
| 2888 | copy = (MatchObject*) match_copy(self, Py_None); |
| 2889 | if (!copy) |
| 2890 | return NULL; |
| 2891 | |
| 2892 | if (!deepcopy((PyObject**) ©->pattern, memo) || |
| 2893 | !deepcopy(©->string, memo) || |
| 2894 | !deepcopy(©->regs, memo)) { |
| 2895 | Py_DECREF(copy); |
| 2896 | return NULL; |
| 2897 | } |
| 2898 | |
| 2899 | #else |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2900 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this match object"); |
| 2901 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2902 | #endif |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2903 | } |
| 2904 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2905 | static PyMethodDef match_methods[] = { |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2906 | {"group", (PyCFunction) match_group, METH_VARARGS}, |
| 2907 | {"start", (PyCFunction) match_start, METH_VARARGS}, |
| 2908 | {"end", (PyCFunction) match_end, METH_VARARGS}, |
| 2909 | {"span", (PyCFunction) match_span, METH_VARARGS}, |
| 2910 | {"groups", (PyCFunction) match_groups, METH_VARARGS|METH_KEYWORDS}, |
| 2911 | {"groupdict", (PyCFunction) match_groupdict, METH_VARARGS|METH_KEYWORDS}, |
| 2912 | {"expand", (PyCFunction) match_expand, METH_VARARGS}, |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2913 | {"__copy__", (PyCFunction) match_copy, METH_VARARGS}, |
| 2914 | {"__deepcopy__", (PyCFunction) match_deepcopy, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2915 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2916 | }; |
| 2917 | |
| 2918 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2919 | match_getattr(MatchObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2920 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2921 | PyObject* res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2922 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2923 | res = Py_FindMethod(match_methods, (PyObject*) self, name); |
| 2924 | if (res) |
| 2925 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2926 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2927 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2928 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2929 | if (!strcmp(name, "lastindex")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2930 | if (self->lastindex >= 0) |
| 2931 | return Py_BuildValue("i", self->lastindex); |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2932 | Py_INCREF(Py_None); |
| 2933 | return Py_None; |
| 2934 | } |
| 2935 | |
| 2936 | if (!strcmp(name, "lastgroup")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2937 | if (self->pattern->indexgroup && self->lastindex >= 0) { |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2938 | PyObject* result = PySequence_GetItem( |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2939 | self->pattern->indexgroup, self->lastindex |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2940 | ); |
| 2941 | if (result) |
| 2942 | return result; |
| 2943 | PyErr_Clear(); |
| 2944 | } |
| 2945 | Py_INCREF(Py_None); |
| 2946 | return Py_None; |
| 2947 | } |
| 2948 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2949 | if (!strcmp(name, "string")) { |
| 2950 | if (self->string) { |
| 2951 | Py_INCREF(self->string); |
| 2952 | return self->string; |
| 2953 | } else { |
| 2954 | Py_INCREF(Py_None); |
| 2955 | return Py_None; |
| 2956 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2957 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2958 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2959 | if (!strcmp(name, "regs")) { |
| 2960 | if (self->regs) { |
| 2961 | Py_INCREF(self->regs); |
| 2962 | return self->regs; |
| 2963 | } else |
| 2964 | return match_regs(self); |
| 2965 | } |
| 2966 | |
| 2967 | if (!strcmp(name, "re")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2968 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2969 | return (PyObject*) self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2970 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2971 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2972 | if (!strcmp(name, "pos")) |
| 2973 | return Py_BuildValue("i", self->pos); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2974 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2975 | if (!strcmp(name, "endpos")) |
| 2976 | return Py_BuildValue("i", self->endpos); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2977 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2978 | PyErr_SetString(PyExc_AttributeError, name); |
| 2979 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2980 | } |
| 2981 | |
| 2982 | /* FIXME: implement setattr("string", None) as a special case (to |
| 2983 | detach the associated string, if any */ |
| 2984 | |
| 2985 | statichere PyTypeObject Match_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2986 | PyObject_HEAD_INIT(NULL) |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 2987 | 0, "_" SRE_MODULE ".SRE_Match", |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2988 | sizeof(MatchObject), sizeof(int), |
| 2989 | (destructor)match_dealloc, /*tp_dealloc*/ |
| 2990 | 0, /*tp_print*/ |
| 2991 | (getattrfunc)match_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2992 | }; |
| 2993 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2994 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2995 | /* scanner methods (experimental) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2996 | |
| 2997 | static void |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2998 | scanner_dealloc(ScannerObject* self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2999 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3000 | state_fini(&self->state); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3001 | Py_DECREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3002 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3003 | } |
| 3004 | |
| 3005 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 3006 | scanner_match(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3007 | { |
| 3008 | SRE_STATE* state = &self->state; |
| 3009 | PyObject* match; |
| 3010 | int status; |
| 3011 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 3012 | state_reset(state); |
| 3013 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3014 | state->ptr = state->start; |
| 3015 | |
| 3016 | if (state->charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 3017 | status = sre_match(state, PatternObject_GetCode(self->pattern), 1); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3018 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 3019 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 3020 | status = sre_umatch(state, PatternObject_GetCode(self->pattern), 1); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 3021 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3022 | } |
| 3023 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 3024 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3025 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3026 | |
Gustavo Niemeyer | c523b04 | 2002-11-07 03:28:56 +0000 | [diff] [blame] | 3027 | if ((status == 0 || state->ptr == state->start) && |
| 3028 | state->ptr < state->end) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 3029 | state->start = (void*) ((char*) state->ptr + state->charsize); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3030 | else |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 3031 | state->start = state->ptr; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3032 | |
| 3033 | return match; |
| 3034 | } |
| 3035 | |
| 3036 | |
| 3037 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 3038 | scanner_search(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3039 | { |
| 3040 | SRE_STATE* state = &self->state; |
| 3041 | PyObject* match; |
| 3042 | int status; |
| 3043 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 3044 | state_reset(state); |
| 3045 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3046 | state->ptr = state->start; |
| 3047 | |
| 3048 | if (state->charsize == 1) { |
| 3049 | status = sre_search(state, PatternObject_GetCode(self->pattern)); |
| 3050 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 3051 | #if defined(HAVE_UNICODE) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3052 | status = sre_usearch(state, PatternObject_GetCode(self->pattern)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 3053 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3054 | } |
| 3055 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 3056 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3057 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3058 | |
Gustavo Niemeyer | c523b04 | 2002-11-07 03:28:56 +0000 | [diff] [blame] | 3059 | if ((status == 0 || state->ptr == state->start) && |
| 3060 | state->ptr < state->end) |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 3061 | state->start = (void*) ((char*) state->ptr + state->charsize); |
| 3062 | else |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3063 | state->start = state->ptr; |
| 3064 | |
| 3065 | return match; |
| 3066 | } |
| 3067 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 3068 | static PyMethodDef scanner_methods[] = { |
Neal Norwitz | bb2769f | 2002-03-31 15:46:00 +0000 | [diff] [blame] | 3069 | /* FIXME: use METH_OLDARGS instead of 0 or fix to use METH_VARARGS */ |
| 3070 | /* METH_OLDARGS is not in Python 1.5.2 */ |
| 3071 | {"match", (PyCFunction) scanner_match, 0}, |
| 3072 | {"search", (PyCFunction) scanner_search, 0}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3073 | {NULL, NULL} |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3074 | }; |
| 3075 | |
| 3076 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 3077 | scanner_getattr(ScannerObject* self, char* name) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3078 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3079 | PyObject* res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3080 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3081 | res = Py_FindMethod(scanner_methods, (PyObject*) self, name); |
| 3082 | if (res) |
| 3083 | return res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3084 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3085 | PyErr_Clear(); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3086 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3087 | /* attributes */ |
| 3088 | if (!strcmp(name, "pattern")) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3089 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3090 | return self->pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3091 | } |
| 3092 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3093 | PyErr_SetString(PyExc_AttributeError, name); |
| 3094 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3095 | } |
| 3096 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 3097 | statichere PyTypeObject Scanner_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3098 | PyObject_HEAD_INIT(NULL) |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 3099 | 0, "_" SRE_MODULE ".SRE_Scanner", |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3100 | sizeof(ScannerObject), 0, |
| 3101 | (destructor)scanner_dealloc, /*tp_dealloc*/ |
| 3102 | 0, /*tp_print*/ |
| 3103 | (getattrfunc)scanner_getattr, /*tp_getattr*/ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 3104 | }; |
| 3105 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 3106 | static PyMethodDef _functions[] = { |
Neal Norwitz | b049325 | 2002-03-31 14:44:22 +0000 | [diff] [blame] | 3107 | {"compile", _compile, METH_VARARGS}, |
| 3108 | {"getcodesize", sre_codesize, METH_VARARGS}, |
| 3109 | {"getlower", sre_getlower, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3110 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 3111 | }; |
| 3112 | |
Andrew M. Kuchling | c24fe36 | 2003-04-30 13:09:08 +0000 | [diff] [blame^] | 3113 | #if PY_VERSION_HEX < 0x02030000 |
| 3114 | DL_EXPORT(void) init_sre(void) |
| 3115 | #else |
Mark Hammond | 8235ea1 | 2002-07-19 06:55:41 +0000 | [diff] [blame] | 3116 | PyMODINIT_FUNC init_sre(void) |
Andrew M. Kuchling | c24fe36 | 2003-04-30 13:09:08 +0000 | [diff] [blame^] | 3117 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 3118 | { |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 3119 | PyObject* m; |
| 3120 | PyObject* d; |
Barry Warsaw | 214a0b13 | 2001-08-16 20:33:48 +0000 | [diff] [blame] | 3121 | PyObject* x; |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 3122 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 3123 | /* Patch object types */ |
| 3124 | Pattern_Type.ob_type = Match_Type.ob_type = |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 3125 | Scanner_Type.ob_type = &PyType_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 3126 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 3127 | m = Py_InitModule("_" SRE_MODULE, _functions); |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 3128 | d = PyModule_GetDict(m); |
| 3129 | |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 3130 | x = PyInt_FromLong(SRE_MAGIC); |
| 3131 | if (x) { |
| 3132 | PyDict_SetItemString(d, "MAGIC", x); |
| 3133 | Py_DECREF(x); |
| 3134 | } |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 3135 | |
Martin v. Löwis | 78e2f06 | 2003-04-19 12:56:08 +0000 | [diff] [blame] | 3136 | x = PyInt_FromLong(sizeof(SRE_CODE)); |
| 3137 | if (x) { |
| 3138 | PyDict_SetItemString(d, "CODESIZE", x); |
| 3139 | Py_DECREF(x); |
| 3140 | } |
| 3141 | |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 3142 | x = PyString_FromString(copyright); |
| 3143 | if (x) { |
| 3144 | PyDict_SetItemString(d, "copyright", x); |
| 3145 | Py_DECREF(x); |
| 3146 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 3147 | } |
| 3148 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 3149 | #endif /* !defined(SRE_RECURSIVE) */ |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 3150 | |
| 3151 | /* vim:ts=4:sw=4:et |
| 3152 | */ |