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 |
| 9 | * 2000-06-30 fl added fast search optimization |
| 10 | * 2000-06-30 fl added assert (lookahead) primitives, etc |
| 11 | * 2000-07-02 fl added charset optimizations, etc |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 12 | * 2000-07-03 fl store code in pattern object, lookbehind, etc |
| 13 | * 2000-07-08 fl added regs attribute |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 14 | * 2000-07-21 fl reset lastindex in scanner methods |
| 15 | * 2000-08-01 fl fixes for 1.6b1 |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 16 | * 2000-08-03 fl added recursion limit |
| 17 | * 2000-08-07 fl use PyOS_CheckStack() if available |
| 18 | * 2000-08-08 fl changed findall to return empty strings instead of None |
| 19 | * 2000-08-27 fl properly propagate memory errors |
| 20 | * 2000-09-02 fl return -1 instead of None for start/end/span |
| 21 | * 2000-09-20 fl added expand method |
| 22 | * 2000-09-21 fl don't use the buffer interface for unicode strings |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 23 | * 2000-10-03 fl fixed assert_not primitive; support keyword arguments |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 24 | * 2000-10-24 fl really fixed assert_not; reset groups in findall |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 25 | * 2000-12-21 fl fixed memory leak in groupdict |
| 26 | * 2001-01-02 fl properly reset pointer after failed assertion in MIN_UNTIL |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 27 | * 2001-01-15 fl avoid recursion for MIN_UNTIL; fixed uppercase literal bug |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 28 | * 2001-01-16 fl fixed memory leak in pattern destructor |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 29 | * 2001-03-20 fl lots of fixes for 2.1b2 |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 30 | * 2001-04-15 fl export copyright as Python attribute, not global |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 31 | * 2001-04-28 fl added __copy__ methods (work in progress) |
| 32 | * 2001-05-14 fl fixes for 1.5.2 |
Fredrik Lundh | f71ae46 | 2001-07-02 17:04:48 +0000 | [diff] [blame] | 33 | * 2001-07-01 fl added BIGCHARSET support (from Martin von Loewis) |
Fredrik Lundh | 397a654 | 2001-10-18 19:30:16 +0000 | [diff] [blame] | 34 | * 2001-10-18 fl fixed group reset issue (from Matthew Mueller) |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 35 | * 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] | 36 | * 2001-10-21 fl added sub/subn primitive |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 37 | * 2001-10-22 fl check for literal sub/subn templates |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 38 | * |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 39 | * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 40 | * |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 41 | * This version of the SRE library can be redistributed under CNRI's |
| 42 | * Python 1.6 license. For any other use, please contact Secret Labs |
| 43 | * AB (info@pythonware.com). |
| 44 | * |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 45 | * Portions of this engine have been developed in cooperation with |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 46 | * CNRI. Hewlett-Packard provided funding for 1.6 integration and |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 47 | * other compatibility work. |
| 48 | */ |
| 49 | |
| 50 | #ifndef SRE_RECURSIVE |
| 51 | |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 52 | static char copyright[] = |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 53 | " SRE 2.2.1 Copyright (c) 1997-2001 by Secret Labs AB "; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 54 | |
| 55 | #include "Python.h" |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 56 | #include "structmember.h" /* offsetof */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 57 | |
| 58 | #include "sre.h" |
| 59 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 60 | #include <ctype.h> |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 61 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 62 | /* name of this module, minus the leading underscore */ |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 63 | #if !defined(SRE_MODULE) |
| 64 | #define SRE_MODULE "sre" |
| 65 | #endif |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 66 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 67 | /* defining this one enables tracing */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 68 | #undef VERBOSE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 69 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 70 | #if PY_VERSION_HEX >= 0x01060000 |
| 71 | #if PY_VERSION_HEX < 0x02020000 || defined(Py_USING_UNICODE) |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 72 | /* defining this enables unicode support (default under 1.6a1 and later) */ |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 73 | #define HAVE_UNICODE |
| 74 | #endif |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 75 | #endif |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 76 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 77 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 78 | /* optional features */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 79 | |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 80 | /* prevent run-away recursion (bad patterns on long strings) */ |
| 81 | |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 82 | #if !defined(USE_STACKCHECK) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 83 | #if defined(MS_WIN64) || defined(__LP64__) || defined(_LP64) |
| 84 | /* require smaller recursion limit for a number of 64-bit platforms: |
| 85 | Win64 (MS_WIN64), Linux64 (__LP64__), Monterey (64-bit AIX) (_LP64) */ |
| 86 | /* FIXME: maybe the limit should be 40000 / sizeof(void*) ? */ |
| 87 | #define USE_RECURSION_LIMIT 7500 |
| 88 | #else |
| 89 | #define USE_RECURSION_LIMIT 10000 |
| 90 | #endif |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 91 | #endif |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 92 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 93 | /* enables fast searching */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 94 | #define USE_FAST_SEARCH |
| 95 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 96 | /* enables aggressive inlining (always on for Visual C) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 97 | #undef USE_INLINE |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 98 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 99 | /* enables copy/deepcopy handling (work in progress) */ |
| 100 | #undef USE_BUILTIN_COPY |
| 101 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 102 | #if PY_VERSION_HEX < 0x01060000 |
| 103 | #define PyObject_DEL(op) PyMem_DEL((op)) |
| 104 | #endif |
| 105 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 106 | /* -------------------------------------------------------------------- */ |
| 107 | |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 108 | #if defined(_MSC_VER) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 109 | #pragma optimize("agtw", on) /* doesn't seem to make much difference... */ |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 110 | #pragma warning(disable: 4710) /* who cares if functions are not inlined ;-) */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 111 | /* fastest possible local call under MSVC */ |
| 112 | #define LOCAL(type) static __inline type __fastcall |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 113 | #elif defined(USE_INLINE) |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 114 | #define LOCAL(type) static inline type |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 115 | #else |
| 116 | #define LOCAL(type) static type |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 117 | #endif |
| 118 | |
| 119 | /* error codes */ |
| 120 | #define SRE_ERROR_ILLEGAL -1 /* illegal opcode */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 121 | #define SRE_ERROR_STATE -2 /* illegal state */ |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 122 | #define SRE_ERROR_RECURSION_LIMIT -3 /* runaway recursion */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 123 | #define SRE_ERROR_MEMORY -9 /* out of memory */ |
| 124 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 125 | #if defined(VERBOSE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 126 | #define TRACE(v) printf v |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 127 | #else |
| 128 | #define TRACE(v) |
| 129 | #endif |
| 130 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 131 | /* -------------------------------------------------------------------- */ |
| 132 | /* search engine state */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 133 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 134 | /* default character predicates (run sre_chars.py to regenerate tables) */ |
| 135 | |
| 136 | #define SRE_DIGIT_MASK 1 |
| 137 | #define SRE_SPACE_MASK 2 |
| 138 | #define SRE_LINEBREAK_MASK 4 |
| 139 | #define SRE_ALNUM_MASK 8 |
| 140 | #define SRE_WORD_MASK 16 |
| 141 | |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 142 | /* FIXME: this assumes ASCII. create tables in init_sre() instead */ |
| 143 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 144 | static char sre_char_info[128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 2, |
| 145 | 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, |
| 146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, |
| 147 | 25, 25, 0, 0, 0, 0, 0, 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 148 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, |
| 149 | 0, 0, 16, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 150 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0 }; |
| 151 | |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 152 | static char sre_char_lower[128] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 153 | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, |
| 154 | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, |
| 155 | 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, |
| 156 | 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, |
| 157 | 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, |
| 158 | 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, |
| 159 | 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, |
| 160 | 120, 121, 122, 123, 124, 125, 126, 127 }; |
| 161 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 162 | #define SRE_IS_DIGIT(ch)\ |
| 163 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_DIGIT_MASK) : 0) |
| 164 | #define SRE_IS_SPACE(ch)\ |
| 165 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_SPACE_MASK) : 0) |
| 166 | #define SRE_IS_LINEBREAK(ch)\ |
| 167 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_LINEBREAK_MASK) : 0) |
| 168 | #define SRE_IS_ALNUM(ch)\ |
| 169 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_ALNUM_MASK) : 0) |
| 170 | #define SRE_IS_WORD(ch)\ |
| 171 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_WORD_MASK) : 0) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 172 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 173 | static unsigned int sre_lower(unsigned int ch) |
| 174 | { |
| 175 | return ((ch) < 128 ? sre_char_lower[ch] : ch); |
| 176 | } |
| 177 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 178 | /* locale-specific character predicates */ |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 179 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 180 | #define SRE_LOC_IS_DIGIT(ch) ((ch) < 256 ? isdigit((ch)) : 0) |
| 181 | #define SRE_LOC_IS_SPACE(ch) ((ch) < 256 ? isspace((ch)) : 0) |
| 182 | #define SRE_LOC_IS_LINEBREAK(ch) ((ch) == '\n') |
| 183 | #define SRE_LOC_IS_ALNUM(ch) ((ch) < 256 ? isalnum((ch)) : 0) |
| 184 | #define SRE_LOC_IS_WORD(ch) (SRE_LOC_IS_ALNUM((ch)) || (ch) == '_') |
| 185 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 186 | static unsigned int sre_lower_locale(unsigned int ch) |
| 187 | { |
| 188 | return ((ch) < 256 ? tolower((ch)) : ch); |
| 189 | } |
| 190 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 191 | /* unicode-specific character predicates */ |
| 192 | |
| 193 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 194 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 195 | #define SRE_UNI_IS_DIGIT(ch) Py_UNICODE_ISDIGIT((Py_UNICODE)(ch)) |
| 196 | #define SRE_UNI_IS_SPACE(ch) Py_UNICODE_ISSPACE((Py_UNICODE)(ch)) |
| 197 | #define SRE_UNI_IS_LINEBREAK(ch) Py_UNICODE_ISLINEBREAK((Py_UNICODE)(ch)) |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 198 | #define SRE_UNI_IS_ALNUM(ch) Py_UNICODE_ISALNUM((Py_UNICODE)(ch)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 199 | #define SRE_UNI_IS_WORD(ch) (SRE_UNI_IS_ALNUM((ch)) || (ch) == '_') |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 200 | |
| 201 | static unsigned int sre_lower_unicode(unsigned int ch) |
| 202 | { |
| 203 | return (unsigned int) Py_UNICODE_TOLOWER((Py_UNICODE)(ch)); |
| 204 | } |
| 205 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 206 | #endif |
| 207 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 208 | LOCAL(int) |
| 209 | sre_category(SRE_CODE category, unsigned int ch) |
| 210 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 211 | switch (category) { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 212 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 213 | case SRE_CATEGORY_DIGIT: |
| 214 | return SRE_IS_DIGIT(ch); |
| 215 | case SRE_CATEGORY_NOT_DIGIT: |
| 216 | return !SRE_IS_DIGIT(ch); |
| 217 | case SRE_CATEGORY_SPACE: |
| 218 | return SRE_IS_SPACE(ch); |
| 219 | case SRE_CATEGORY_NOT_SPACE: |
| 220 | return !SRE_IS_SPACE(ch); |
| 221 | case SRE_CATEGORY_WORD: |
| 222 | return SRE_IS_WORD(ch); |
| 223 | case SRE_CATEGORY_NOT_WORD: |
| 224 | return !SRE_IS_WORD(ch); |
| 225 | case SRE_CATEGORY_LINEBREAK: |
| 226 | return SRE_IS_LINEBREAK(ch); |
| 227 | case SRE_CATEGORY_NOT_LINEBREAK: |
| 228 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 229 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 230 | case SRE_CATEGORY_LOC_WORD: |
| 231 | return SRE_LOC_IS_WORD(ch); |
| 232 | case SRE_CATEGORY_LOC_NOT_WORD: |
| 233 | return !SRE_LOC_IS_WORD(ch); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 234 | |
| 235 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 236 | case SRE_CATEGORY_UNI_DIGIT: |
| 237 | return SRE_UNI_IS_DIGIT(ch); |
| 238 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 239 | return !SRE_UNI_IS_DIGIT(ch); |
| 240 | case SRE_CATEGORY_UNI_SPACE: |
| 241 | return SRE_UNI_IS_SPACE(ch); |
| 242 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 243 | return !SRE_UNI_IS_SPACE(ch); |
| 244 | case SRE_CATEGORY_UNI_WORD: |
| 245 | return SRE_UNI_IS_WORD(ch); |
| 246 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 247 | return !SRE_UNI_IS_WORD(ch); |
| 248 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 249 | return SRE_UNI_IS_LINEBREAK(ch); |
| 250 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 251 | return !SRE_UNI_IS_LINEBREAK(ch); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 252 | #else |
| 253 | case SRE_CATEGORY_UNI_DIGIT: |
| 254 | return SRE_IS_DIGIT(ch); |
| 255 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 256 | return !SRE_IS_DIGIT(ch); |
| 257 | case SRE_CATEGORY_UNI_SPACE: |
| 258 | return SRE_IS_SPACE(ch); |
| 259 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 260 | return !SRE_IS_SPACE(ch); |
| 261 | case SRE_CATEGORY_UNI_WORD: |
| 262 | return SRE_LOC_IS_WORD(ch); |
| 263 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 264 | return !SRE_LOC_IS_WORD(ch); |
| 265 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 266 | return SRE_IS_LINEBREAK(ch); |
| 267 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 268 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 269 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 270 | } |
| 271 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | /* helpers */ |
| 275 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 276 | static void |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 277 | mark_fini(SRE_STATE* state) |
| 278 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 279 | if (state->mark_stack) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 280 | free(state->mark_stack); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 281 | state->mark_stack = NULL; |
| 282 | } |
| 283 | state->mark_stack_size = state->mark_stack_base = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | static int |
| 287 | mark_save(SRE_STATE* state, int lo, int hi) |
| 288 | { |
| 289 | void* stack; |
| 290 | int size; |
| 291 | int minsize, newsize; |
| 292 | |
| 293 | if (hi <= lo) |
| 294 | return 0; |
| 295 | |
| 296 | size = (hi - lo) + 1; |
| 297 | |
| 298 | newsize = state->mark_stack_size; |
| 299 | minsize = state->mark_stack_base + size; |
| 300 | |
| 301 | if (newsize < minsize) { |
| 302 | /* create new stack */ |
| 303 | if (!newsize) { |
| 304 | newsize = 512; |
| 305 | if (newsize < minsize) |
| 306 | newsize = minsize; |
| 307 | TRACE(("allocate stack %d\n", newsize)); |
| 308 | stack = malloc(sizeof(void*) * newsize); |
| 309 | } else { |
| 310 | /* grow the stack */ |
| 311 | while (newsize < minsize) |
| 312 | newsize += newsize; |
| 313 | TRACE(("grow stack to %d\n", newsize)); |
| 314 | stack = realloc(state->mark_stack, sizeof(void*) * newsize); |
| 315 | } |
| 316 | if (!stack) { |
| 317 | mark_fini(state); |
| 318 | return SRE_ERROR_MEMORY; |
| 319 | } |
| 320 | state->mark_stack = stack; |
| 321 | state->mark_stack_size = newsize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 322 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 323 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 324 | 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] | 325 | |
| 326 | memcpy(state->mark_stack + state->mark_stack_base, state->mark + lo, |
| 327 | size * sizeof(void*)); |
| 328 | |
| 329 | state->mark_stack_base += size; |
| 330 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 331 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 332 | } |
| 333 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 334 | static int |
| 335 | mark_restore(SRE_STATE* state, int lo, int hi) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 336 | { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 337 | int size; |
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 | if (hi <= lo) |
| 340 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 341 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 342 | size = (hi - lo) + 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 343 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 344 | state->mark_stack_base -= size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 345 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 346 | 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] | 347 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 348 | memcpy(state->mark + lo, state->mark_stack + state->mark_stack_base, |
| 349 | size * sizeof(void*)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 350 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 351 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 352 | } |
| 353 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 354 | /* generate 8-bit version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 355 | |
| 356 | #define SRE_CHAR unsigned char |
| 357 | #define SRE_AT sre_at |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 358 | #define SRE_COUNT sre_count |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 359 | #define SRE_CHARSET sre_charset |
| 360 | #define SRE_INFO sre_info |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 361 | #define SRE_MATCH sre_match |
| 362 | #define SRE_SEARCH sre_search |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 363 | #define SRE_LITERAL_TEMPLATE sre_literal_template |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 364 | |
| 365 | #if defined(HAVE_UNICODE) |
| 366 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 367 | #define SRE_RECURSIVE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 368 | #include "_sre.c" |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 369 | #undef SRE_RECURSIVE |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 370 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 371 | #undef SRE_LITERAL_TEMPLATE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 372 | #undef SRE_SEARCH |
| 373 | #undef SRE_MATCH |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 374 | #undef SRE_INFO |
| 375 | #undef SRE_CHARSET |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 376 | #undef SRE_COUNT |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 377 | #undef SRE_AT |
| 378 | #undef SRE_CHAR |
| 379 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 380 | /* generate 16-bit unicode version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 381 | |
| 382 | #define SRE_CHAR Py_UNICODE |
| 383 | #define SRE_AT sre_uat |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 384 | #define SRE_COUNT sre_ucount |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 385 | #define SRE_CHARSET sre_ucharset |
| 386 | #define SRE_INFO sre_uinfo |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 387 | #define SRE_MATCH sre_umatch |
| 388 | #define SRE_SEARCH sre_usearch |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 389 | #define SRE_LITERAL_TEMPLATE sre_uliteral_template |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 390 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 391 | |
| 392 | #endif /* SRE_RECURSIVE */ |
| 393 | |
| 394 | /* -------------------------------------------------------------------- */ |
| 395 | /* String matching engine */ |
| 396 | |
| 397 | /* the following section is compiled twice, with different character |
| 398 | settings */ |
| 399 | |
| 400 | LOCAL(int) |
| 401 | SRE_AT(SRE_STATE* state, SRE_CHAR* ptr, SRE_CODE at) |
| 402 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 403 | /* check if pointer is at given position */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 404 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 405 | int this, that; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 406 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 407 | switch (at) { |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 408 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 409 | case SRE_AT_BEGINNING: |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 410 | case SRE_AT_BEGINNING_STRING: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 411 | return ((void*) ptr == state->beginning); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 412 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 413 | case SRE_AT_BEGINNING_LINE: |
| 414 | return ((void*) ptr == state->beginning || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 415 | SRE_IS_LINEBREAK((int) ptr[-1])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 416 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 417 | case SRE_AT_END: |
Fredrik Lundh | ef34bd2 | 2000-06-30 21:40:20 +0000 | [diff] [blame] | 418 | return (((void*) (ptr+1) == state->end && |
| 419 | SRE_IS_LINEBREAK((int) ptr[0])) || |
| 420 | ((void*) ptr == state->end)); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 421 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 422 | case SRE_AT_END_LINE: |
| 423 | return ((void*) ptr == state->end || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 424 | SRE_IS_LINEBREAK((int) ptr[0])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 425 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 426 | case SRE_AT_END_STRING: |
| 427 | return ((void*) ptr == state->end); |
| 428 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 429 | case SRE_AT_BOUNDARY: |
| 430 | if (state->beginning == state->end) |
| 431 | return 0; |
| 432 | that = ((void*) ptr > state->beginning) ? |
| 433 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 434 | this = ((void*) ptr < state->end) ? |
| 435 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 436 | return this != that; |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 437 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 438 | case SRE_AT_NON_BOUNDARY: |
| 439 | if (state->beginning == state->end) |
| 440 | return 0; |
| 441 | that = ((void*) ptr > state->beginning) ? |
| 442 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 443 | this = ((void*) ptr < state->end) ? |
| 444 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 445 | return this == that; |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 446 | |
| 447 | case SRE_AT_LOC_BOUNDARY: |
| 448 | if (state->beginning == state->end) |
| 449 | return 0; |
| 450 | that = ((void*) ptr > state->beginning) ? |
| 451 | SRE_LOC_IS_WORD((int) ptr[-1]) : 0; |
| 452 | this = ((void*) ptr < state->end) ? |
| 453 | SRE_LOC_IS_WORD((int) ptr[0]) : 0; |
| 454 | return this != that; |
| 455 | |
| 456 | case SRE_AT_LOC_NON_BOUNDARY: |
| 457 | if (state->beginning == state->end) |
| 458 | return 0; |
| 459 | that = ((void*) ptr > state->beginning) ? |
| 460 | SRE_LOC_IS_WORD((int) ptr[-1]) : 0; |
| 461 | this = ((void*) ptr < state->end) ? |
| 462 | SRE_LOC_IS_WORD((int) ptr[0]) : 0; |
| 463 | return this == that; |
| 464 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 465 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 466 | case SRE_AT_UNI_BOUNDARY: |
| 467 | if (state->beginning == state->end) |
| 468 | return 0; |
| 469 | that = ((void*) ptr > state->beginning) ? |
| 470 | SRE_UNI_IS_WORD((int) ptr[-1]) : 0; |
| 471 | this = ((void*) ptr < state->end) ? |
| 472 | SRE_UNI_IS_WORD((int) ptr[0]) : 0; |
| 473 | return this != that; |
| 474 | |
| 475 | case SRE_AT_UNI_NON_BOUNDARY: |
| 476 | if (state->beginning == state->end) |
| 477 | return 0; |
| 478 | that = ((void*) ptr > state->beginning) ? |
| 479 | SRE_UNI_IS_WORD((int) ptr[-1]) : 0; |
| 480 | this = ((void*) ptr < state->end) ? |
| 481 | SRE_UNI_IS_WORD((int) ptr[0]) : 0; |
| 482 | return this == that; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 483 | #endif |
| 484 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 485 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 486 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 487 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | LOCAL(int) |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 491 | SRE_CHARSET(SRE_CODE* set, SRE_CODE ch) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 492 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 493 | /* check if character is a member of the given set */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 494 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 495 | int ok = 1; |
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 | for (;;) { |
| 498 | switch (*set++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 499 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 500 | case SRE_OP_LITERAL: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 501 | /* <LITERAL> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 502 | if (ch == set[0]) |
| 503 | return ok; |
| 504 | set++; |
| 505 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 506 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 507 | case SRE_OP_RANGE: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 508 | /* <RANGE> <lower> <upper> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 509 | if (set[0] <= ch && ch <= set[1]) |
| 510 | return ok; |
| 511 | set += 2; |
| 512 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 513 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 514 | case SRE_OP_CHARSET: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 515 | /* <CHARSET> <bitmap> (16 bits per code word) */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 516 | if (ch < 256 && (set[ch >> 4] & (1 << (ch & 15)))) |
| 517 | return ok; |
| 518 | set += 16; |
| 519 | break; |
| 520 | |
Fredrik Lundh | f71ae46 | 2001-07-02 17:04:48 +0000 | [diff] [blame] | 521 | case SRE_OP_BIGCHARSET: |
| 522 | /* <BIGCHARSET> <blockcount> <256 blockindices> <blocks> */ |
| 523 | { |
| 524 | int count, block; |
| 525 | count = *(set++); |
| 526 | block = ((unsigned char*)set)[ch >> 8]; |
| 527 | set += 128; |
| 528 | if (set[block*16 + ((ch & 255)>>4)] & (1 << (ch & 15))) |
| 529 | return ok; |
| 530 | set += count*16; |
| 531 | break; |
| 532 | } |
Fredrik Lundh | 19af43d | 2001-07-02 16:58:38 +0000 | [diff] [blame] | 533 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 534 | case SRE_OP_CATEGORY: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 535 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 536 | if (sre_category(set[0], (int) ch)) |
| 537 | return ok; |
| 538 | set += 1; |
| 539 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 540 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 541 | case SRE_OP_NEGATE: |
| 542 | ok = !ok; |
| 543 | break; |
| 544 | |
| 545 | case SRE_OP_FAILURE: |
| 546 | return !ok; |
| 547 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 548 | default: |
| 549 | /* internal error -- there's not much we can do about it |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 550 | here, so let's just pretend it didn't match... */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 551 | return 0; |
| 552 | } |
| 553 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 554 | } |
| 555 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 556 | LOCAL(int) SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level); |
| 557 | |
| 558 | LOCAL(int) |
| 559 | SRE_COUNT(SRE_STATE* state, SRE_CODE* pattern, int maxcount, int level) |
| 560 | { |
| 561 | SRE_CODE chr; |
| 562 | SRE_CHAR* ptr = state->ptr; |
| 563 | SRE_CHAR* end = state->end; |
| 564 | int i; |
| 565 | |
| 566 | /* adjust end */ |
| 567 | if (maxcount < end - ptr && maxcount != 65535) |
| 568 | end = ptr + maxcount; |
| 569 | |
| 570 | switch (pattern[0]) { |
| 571 | |
| 572 | case SRE_OP_ANY: |
| 573 | /* repeated dot wildcard. */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 574 | TRACE(("|%p|%p|COUNT ANY\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 575 | while (ptr < end && !SRE_IS_LINEBREAK(*ptr)) |
| 576 | ptr++; |
| 577 | break; |
| 578 | |
| 579 | case SRE_OP_ANY_ALL: |
| 580 | /* repeated dot wildcare. skip to the end of the target |
| 581 | string, and backtrack from there */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 582 | TRACE(("|%p|%p|COUNT ANY_ALL\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 583 | ptr = end; |
| 584 | break; |
| 585 | |
| 586 | case SRE_OP_LITERAL: |
| 587 | /* repeated literal */ |
| 588 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 589 | TRACE(("|%p|%p|COUNT LITERAL %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 590 | while (ptr < end && (SRE_CODE) *ptr == chr) |
| 591 | ptr++; |
| 592 | break; |
| 593 | |
| 594 | case SRE_OP_LITERAL_IGNORE: |
| 595 | /* repeated literal */ |
| 596 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 597 | TRACE(("|%p|%p|COUNT LITERAL_IGNORE %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 598 | while (ptr < end && (SRE_CODE) state->lower(*ptr) == chr) |
| 599 | ptr++; |
| 600 | break; |
| 601 | |
| 602 | case SRE_OP_NOT_LITERAL: |
| 603 | /* repeated non-literal */ |
| 604 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 605 | TRACE(("|%p|%p|COUNT NOT_LITERAL %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 606 | while (ptr < end && (SRE_CODE) *ptr != chr) |
| 607 | ptr++; |
| 608 | break; |
| 609 | |
| 610 | case SRE_OP_NOT_LITERAL_IGNORE: |
| 611 | /* repeated non-literal */ |
| 612 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 613 | TRACE(("|%p|%p|COUNT NOT_LITERAL_IGNORE %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 614 | while (ptr < end && (SRE_CODE) state->lower(*ptr) != chr) |
| 615 | ptr++; |
| 616 | break; |
| 617 | |
| 618 | case SRE_OP_IN: |
| 619 | /* repeated set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 620 | TRACE(("|%p|%p|COUNT IN\n", pattern, ptr)); |
| 621 | while (ptr < end && SRE_CHARSET(pattern + 2, *ptr)) |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 622 | ptr++; |
| 623 | break; |
| 624 | |
| 625 | default: |
| 626 | /* repeated single character pattern */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 627 | TRACE(("|%p|%p|COUNT SUBPATTERN\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 628 | while ((SRE_CHAR*) state->ptr < end) { |
| 629 | i = SRE_MATCH(state, pattern, level); |
| 630 | if (i < 0) |
| 631 | return i; |
| 632 | if (!i) |
| 633 | break; |
| 634 | } |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 635 | TRACE(("|%p|%p|COUNT %d\n", pattern, ptr, |
| 636 | (SRE_CHAR*) state->ptr - ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 637 | return (SRE_CHAR*) state->ptr - ptr; |
| 638 | } |
| 639 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 640 | 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] | 641 | return ptr - (SRE_CHAR*) state->ptr; |
| 642 | } |
| 643 | |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 644 | #if 0 /* not used in this release */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 645 | LOCAL(int) |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 646 | SRE_INFO(SRE_STATE* state, SRE_CODE* pattern) |
| 647 | { |
| 648 | /* check if an SRE_OP_INFO block matches at the current position. |
| 649 | returns the number of SRE_CODE objects to skip if successful, 0 |
| 650 | if no match */ |
| 651 | |
| 652 | SRE_CHAR* end = state->end; |
| 653 | SRE_CHAR* ptr = state->ptr; |
| 654 | int i; |
| 655 | |
| 656 | /* check minimal length */ |
| 657 | if (pattern[3] && (end - ptr) < pattern[3]) |
| 658 | return 0; |
| 659 | |
| 660 | /* check known prefix */ |
| 661 | if (pattern[2] & SRE_INFO_PREFIX && pattern[5] > 1) { |
| 662 | /* <length> <skip> <prefix data> <overlap data> */ |
| 663 | for (i = 0; i < pattern[5]; i++) |
| 664 | if ((SRE_CODE) ptr[i] != pattern[7 + i]) |
| 665 | return 0; |
| 666 | return pattern[0] + 2 * pattern[6]; |
| 667 | } |
| 668 | return pattern[0]; |
| 669 | } |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 670 | #endif |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 671 | |
| 672 | LOCAL(int) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 673 | SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 674 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 675 | /* check if string matches the given pattern. returns <0 for |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 676 | error, 0 for failure, and 1 for success */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 677 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 678 | SRE_CHAR* end = state->end; |
| 679 | SRE_CHAR* ptr = state->ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 680 | int i, count; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 681 | SRE_REPEAT* rp; |
| 682 | int lastmark; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 683 | SRE_CODE chr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 684 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 685 | SRE_REPEAT rep; /* FIXME: <fl> allocate in STATE instead */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 686 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 687 | TRACE(("|%p|%p|ENTER %d\n", pattern, ptr, level)); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 688 | |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 689 | #if defined(USE_STACKCHECK) |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 690 | if (level % 10 == 0 && PyOS_CheckStack()) |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 691 | return SRE_ERROR_RECURSION_LIMIT; |
| 692 | #endif |
| 693 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 694 | #if defined(USE_RECURSION_LIMIT) |
| 695 | if (level > USE_RECURSION_LIMIT) |
| 696 | return SRE_ERROR_RECURSION_LIMIT; |
| 697 | #endif |
| 698 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 699 | if (pattern[0] == SRE_OP_INFO) { |
| 700 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 701 | /* <INFO> <1=skip> <2=flags> <3=min> ... */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 702 | if (pattern[3] && (end - ptr) < pattern[3]) { |
| 703 | TRACE(("reject (got %d chars, need %d)\n", |
| 704 | (end - ptr), pattern[3])); |
| 705 | return 0; |
| 706 | } |
| 707 | pattern += pattern[1] + 1; |
| 708 | } |
| 709 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 710 | for (;;) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 711 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 712 | switch (*pattern++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 713 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 714 | case SRE_OP_FAILURE: |
| 715 | /* immediate failure */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 716 | TRACE(("|%p|%p|FAILURE\n", pattern, ptr)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 717 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 718 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 719 | case SRE_OP_SUCCESS: |
| 720 | /* end of pattern */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 721 | TRACE(("|%p|%p|SUCCESS\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 722 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 723 | return 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 724 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 725 | case SRE_OP_AT: |
| 726 | /* match at given position */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 727 | /* <AT> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 728 | TRACE(("|%p|%p|AT %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 729 | if (!SRE_AT(state, ptr, *pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 730 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 731 | pattern++; |
| 732 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 733 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 734 | case SRE_OP_CATEGORY: |
| 735 | /* match at given category */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 736 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 737 | TRACE(("|%p|%p|CATEGORY %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 738 | if (ptr >= end || !sre_category(pattern[0], ptr[0])) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 739 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 740 | pattern++; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 741 | ptr++; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 742 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 743 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 744 | case SRE_OP_LITERAL: |
| 745 | /* match literal string */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 746 | /* <LITERAL> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 747 | TRACE(("|%p|%p|LITERAL %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 748 | if (ptr >= end || (SRE_CODE) ptr[0] != pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 749 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 750 | pattern++; |
| 751 | ptr++; |
| 752 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 753 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 754 | case SRE_OP_NOT_LITERAL: |
| 755 | /* match anything that is not literal character */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 756 | /* <NOT_LITERAL> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 757 | TRACE(("|%p|%p|NOT_LITERAL %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 758 | if (ptr >= end || (SRE_CODE) ptr[0] == pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 759 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 760 | pattern++; |
| 761 | ptr++; |
| 762 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 763 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 764 | case SRE_OP_ANY: |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 765 | /* match anything (except a newline) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 766 | /* <ANY> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 767 | TRACE(("|%p|%p|ANY\n", pattern, ptr)); |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 768 | if (ptr >= end || SRE_IS_LINEBREAK(ptr[0])) |
| 769 | return 0; |
| 770 | ptr++; |
| 771 | break; |
| 772 | |
| 773 | case SRE_OP_ANY_ALL: |
| 774 | /* match anything */ |
| 775 | /* <ANY_ALL> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 776 | TRACE(("|%p|%p|ANY_ALL\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 777 | if (ptr >= end) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 778 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 779 | ptr++; |
| 780 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 781 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 782 | case SRE_OP_IN: |
| 783 | /* match set member (or non_member) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 784 | /* <IN> <skip> <set> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 785 | TRACE(("|%p|%p|IN\n", pattern, ptr)); |
| 786 | if (ptr >= end || !SRE_CHARSET(pattern + 1, *ptr)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 787 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 788 | pattern += pattern[0]; |
| 789 | ptr++; |
| 790 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 791 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 792 | case SRE_OP_GROUPREF: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 793 | /* match backreference */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 794 | TRACE(("|%p|%p|GROUPREF %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 795 | i = pattern[0]; |
| 796 | { |
| 797 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 798 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 799 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 800 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 801 | while (p < e) { |
| 802 | if (ptr >= end || *ptr != *p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 803 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 804 | p++; ptr++; |
| 805 | } |
| 806 | } |
| 807 | pattern++; |
| 808 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 809 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 810 | case SRE_OP_GROUPREF_IGNORE: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 811 | /* match backreference */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 812 | TRACE(("|%p|%p|GROUPREF_IGNORE %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 813 | i = pattern[0]; |
| 814 | { |
| 815 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 816 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 817 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 818 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 819 | while (p < e) { |
| 820 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 821 | state->lower(*ptr) != state->lower(*p)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 822 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 823 | p++; ptr++; |
| 824 | } |
| 825 | } |
| 826 | pattern++; |
| 827 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 828 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 829 | case SRE_OP_LITERAL_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 830 | TRACE(("|%p|%p|LITERAL_IGNORE %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 831 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 832 | state->lower(*ptr) != state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 833 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 834 | pattern++; |
| 835 | ptr++; |
| 836 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 837 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 838 | case SRE_OP_NOT_LITERAL_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 839 | TRACE(("|%p|%p|NOT_LITERAL_IGNORE %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 840 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 841 | state->lower(*ptr) == state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 842 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 843 | pattern++; |
| 844 | ptr++; |
| 845 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 846 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 847 | case SRE_OP_IN_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 848 | TRACE(("|%p|%p|IN_IGNORE\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 849 | if (ptr >= end |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 850 | || !SRE_CHARSET(pattern + 1, (SRE_CODE) state->lower(*ptr))) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 851 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 852 | pattern += pattern[0]; |
| 853 | ptr++; |
| 854 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 855 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 856 | case SRE_OP_MARK: |
| 857 | /* set mark */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 858 | /* <MARK> <gid> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 859 | TRACE(("|%p|%p|MARK %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 860 | i = pattern[0]; |
| 861 | if (i & 1) |
| 862 | state->lastindex = i/2 + 1; |
| 863 | if (i > state->lastmark) |
| 864 | state->lastmark = i; |
| 865 | state->mark[i] = ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 866 | pattern++; |
| 867 | break; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 868 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 869 | case SRE_OP_JUMP: |
| 870 | case SRE_OP_INFO: |
| 871 | /* jump forward */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 872 | /* <JUMP> <offset> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 873 | TRACE(("|%p|%p|JUMP %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 874 | pattern += pattern[0]; |
| 875 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 876 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 877 | case SRE_OP_ASSERT: |
| 878 | /* assert subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 879 | /* <ASSERT> <skip> <back> <pattern> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 880 | TRACE(("|%p|%p|ASSERT %d\n", pattern, ptr, pattern[1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 881 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 882 | if (state->ptr < state->beginning) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 883 | return 0; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 884 | i = SRE_MATCH(state, pattern + 2, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 885 | if (i <= 0) |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 886 | return i; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 887 | pattern += pattern[0]; |
| 888 | break; |
Fredrik Lundh | 43b3b49 | 2000-06-30 10:41:31 +0000 | [diff] [blame] | 889 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 890 | case SRE_OP_ASSERT_NOT: |
| 891 | /* assert not subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 892 | /* <ASSERT_NOT> <skip> <back> <pattern> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 893 | TRACE(("|%p|%p|ASSERT_NOT %d\n", pattern, ptr, pattern[1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 894 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 895 | if (state->ptr >= state->beginning) { |
| 896 | i = SRE_MATCH(state, pattern + 2, level + 1); |
| 897 | if (i < 0) |
| 898 | return i; |
| 899 | if (i) |
| 900 | return 0; |
| 901 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 902 | pattern += pattern[0]; |
| 903 | break; |
| 904 | |
| 905 | case SRE_OP_BRANCH: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 906 | /* alternation */ |
| 907 | /* <BRANCH> <0=skip> code <JUMP> ... <NULL> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 908 | TRACE(("|%p|%p|BRANCH\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 909 | lastmark = state->lastmark; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 910 | for (; pattern[0]; pattern += pattern[0]) { |
| 911 | if (pattern[1] == SRE_OP_LITERAL && |
| 912 | (ptr >= end || (SRE_CODE) *ptr != pattern[2])) |
| 913 | continue; |
| 914 | if (pattern[1] == SRE_OP_IN && |
| 915 | (ptr >= end || !SRE_CHARSET(pattern + 3, (SRE_CODE) *ptr))) |
| 916 | continue; |
| 917 | state->ptr = ptr; |
| 918 | i = SRE_MATCH(state, pattern + 1, level + 1); |
| 919 | if (i) |
| 920 | return i; |
| 921 | if (state->lastmark > lastmark) { |
| 922 | memset( |
| 923 | state->mark + lastmark + 1, 0, |
| 924 | (state->lastmark - lastmark) * sizeof(void*) |
| 925 | ); |
| 926 | state->lastmark = lastmark; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 927 | } |
| 928 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 929 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 930 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 931 | case SRE_OP_REPEAT_ONE: |
| 932 | /* match repeated sequence (maximizing regexp) */ |
| 933 | |
| 934 | /* this operator only works if the repeated item is |
| 935 | exactly one character wide, and we're not already |
| 936 | collecting backtracking points. for other cases, |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 937 | use the MAX_REPEAT operator */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 938 | |
| 939 | /* <REPEAT_ONE> <skip> <1=min> <2=max> item <SUCCESS> tail */ |
| 940 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 941 | TRACE(("|%p|%p|REPEAT_ONE %d %d\n", pattern, ptr, |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 942 | pattern[1], pattern[2])); |
| 943 | |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 944 | if (ptr + pattern[1] > end) |
| 945 | return 0; /* cannot match */ |
| 946 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 947 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 948 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 949 | count = SRE_COUNT(state, pattern + 3, pattern[2], level + 1); |
| 950 | if (count < 0) |
| 951 | return count; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 952 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 953 | ptr += count; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 954 | |
| 955 | /* when we arrive here, count contains the number of |
| 956 | matches, and ptr points to the tail of the target |
| 957 | string. check if the rest of the pattern matches, |
| 958 | and backtrack if not. */ |
| 959 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 960 | if (count < (int) pattern[1]) |
| 961 | return 0; |
| 962 | |
| 963 | if (pattern[pattern[0]] == SRE_OP_SUCCESS) { |
| 964 | /* tail is empty. we're finished */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 965 | state->ptr = ptr; |
| 966 | return 1; |
| 967 | |
| 968 | } else if (pattern[pattern[0]] == SRE_OP_LITERAL) { |
| 969 | /* tail starts with a literal. skip positions where |
| 970 | the rest of the pattern cannot possibly match */ |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 971 | chr = pattern[pattern[0]+1]; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 972 | for (;;) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 973 | while (count >= (int) pattern[1] && |
| 974 | (ptr >= end || *ptr != chr)) { |
| 975 | ptr--; |
| 976 | count--; |
| 977 | } |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 978 | if (count < (int) pattern[1]) |
| 979 | break; |
| 980 | state->ptr = ptr; |
| 981 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 982 | if (i) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 983 | return i; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 984 | ptr--; |
| 985 | count--; |
| 986 | } |
| 987 | |
| 988 | } else { |
| 989 | /* general case */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 990 | lastmark = state->lastmark; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 991 | while (count >= (int) pattern[1]) { |
| 992 | state->ptr = ptr; |
| 993 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 994 | if (i) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 995 | return i; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 996 | ptr--; |
| 997 | count--; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 998 | if (state->lastmark > lastmark) { |
| 999 | memset( |
| 1000 | state->mark + lastmark + 1, 0, |
| 1001 | (state->lastmark - lastmark) * sizeof(void*) |
| 1002 | ); |
| 1003 | state->lastmark = lastmark; |
| 1004 | } |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1005 | } |
| 1006 | } |
| 1007 | return 0; |
| 1008 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1009 | case SRE_OP_REPEAT: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1010 | /* create repeat context. all the hard work is done |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1011 | by the UNTIL operator (MAX_UNTIL, MIN_UNTIL) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1012 | /* <REPEAT> <skip> <1=min> <2=max> item <UNTIL> tail */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1013 | TRACE(("|%p|%p|REPEAT %d %d\n", pattern, ptr, |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1014 | pattern[1], pattern[2])); |
| 1015 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1016 | rep.count = -1; |
| 1017 | rep.pattern = pattern; |
| 1018 | |
| 1019 | /* install new repeat context */ |
| 1020 | rep.prev = state->repeat; |
| 1021 | state->repeat = &rep; |
| 1022 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1023 | state->ptr = ptr; |
| 1024 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1025 | |
| 1026 | state->repeat = rep.prev; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1027 | |
| 1028 | return i; |
| 1029 | |
| 1030 | case SRE_OP_MAX_UNTIL: |
| 1031 | /* maximizing repeat */ |
| 1032 | /* <REPEAT> <skip> <1=min> <2=max> item <MAX_UNTIL> tail */ |
| 1033 | |
| 1034 | /* FIXME: we probably need to deal with zero-width |
| 1035 | matches in here... */ |
| 1036 | |
| 1037 | rp = state->repeat; |
| 1038 | if (!rp) |
| 1039 | return SRE_ERROR_STATE; |
| 1040 | |
| 1041 | state->ptr = ptr; |
| 1042 | |
| 1043 | count = rp->count + 1; |
| 1044 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1045 | TRACE(("|%p|%p|MAX_UNTIL %d\n", pattern, ptr, count)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1046 | |
| 1047 | if (count < rp->pattern[1]) { |
| 1048 | /* not enough matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1049 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1050 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1051 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1052 | if (i) |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1053 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1054 | rp->count = count - 1; |
| 1055 | state->ptr = ptr; |
| 1056 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1057 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1058 | |
| 1059 | if (count < rp->pattern[2] || rp->pattern[2] == 65535) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1060 | /* we may have enough matches, but if we can |
| 1061 | match another item, do so */ |
| 1062 | rp->count = count; |
| 1063 | lastmark = state->lastmark; |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1064 | i = mark_save(state, 0, lastmark); |
| 1065 | if (i < 0) |
| 1066 | return i; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1067 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1068 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1069 | if (i) |
| 1070 | return i; |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1071 | i = mark_restore(state, 0, lastmark); |
Fredrik Lundh | 397a654 | 2001-10-18 19:30:16 +0000 | [diff] [blame] | 1072 | state->lastmark = lastmark; |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1073 | if (i < 0) |
| 1074 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1075 | rp->count = count - 1; |
| 1076 | state->ptr = ptr; |
| 1077 | } |
| 1078 | |
| 1079 | /* cannot match more repeated items here. make sure the |
| 1080 | tail matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1081 | state->repeat = rp->prev; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1082 | i = SRE_MATCH(state, pattern, level + 1); |
| 1083 | if (i) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1084 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1085 | state->repeat = rp; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1086 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1087 | return 0; |
| 1088 | |
| 1089 | case SRE_OP_MIN_UNTIL: |
| 1090 | /* minimizing repeat */ |
| 1091 | /* <REPEAT> <skip> <1=min> <2=max> item <MIN_UNTIL> tail */ |
| 1092 | |
| 1093 | rp = state->repeat; |
| 1094 | if (!rp) |
| 1095 | return SRE_ERROR_STATE; |
| 1096 | |
| 1097 | count = rp->count + 1; |
| 1098 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1099 | TRACE(("|%p|%p|MIN_UNTIL %d %p\n", pattern, ptr, count, |
| 1100 | rp->pattern)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1101 | |
| 1102 | state->ptr = ptr; |
| 1103 | |
| 1104 | if (count < rp->pattern[1]) { |
| 1105 | /* not enough matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1106 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1107 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1108 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1109 | if (i) |
| 1110 | return i; |
| 1111 | rp->count = count-1; |
| 1112 | state->ptr = ptr; |
| 1113 | return 0; |
| 1114 | } |
| 1115 | |
| 1116 | /* see if the tail matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1117 | state->repeat = rp->prev; |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 1118 | /* FIXME: the following fix doesn't always work (#133283) */ |
Fredrik Lundh | df781e6 | 2001-07-02 19:54:28 +0000 | [diff] [blame] | 1119 | if (rp->pattern[2] == 65535) { |
Fredrik Lundh | fa25a7d | 2001-01-14 23:55:55 +0000 | [diff] [blame] | 1120 | /* unbounded repeat */ |
| 1121 | for (;;) { |
| 1122 | i = SRE_MATCH(state, pattern, level + 1); |
| 1123 | if (i || ptr >= end) |
| 1124 | break; |
| 1125 | state->ptr = ++ptr; |
| 1126 | } |
| 1127 | } else |
| 1128 | i = SRE_MATCH(state, pattern, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1129 | if (i) { |
| 1130 | /* free(rp); */ |
| 1131 | return i; |
| 1132 | } |
Fredrik Lundh | fa25a7d | 2001-01-14 23:55:55 +0000 | [diff] [blame] | 1133 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1134 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1135 | state->repeat = rp; |
| 1136 | |
| 1137 | if (count >= rp->pattern[2] && rp->pattern[2] != 65535) |
| 1138 | return 0; |
| 1139 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1140 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1141 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1142 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1143 | if (i) |
| 1144 | return i; |
| 1145 | rp->count = count - 1; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1146 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1147 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1148 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1149 | default: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1150 | TRACE(("|%p|%p|UNKNOWN %d\n", pattern, ptr, pattern[-1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1151 | return SRE_ERROR_ILLEGAL; |
| 1152 | } |
| 1153 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1154 | |
Sjoerd Mullender | 89dfe9e | 2001-08-30 14:37:07 +0000 | [diff] [blame] | 1155 | /* can't end up here */ |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 1156 | /* return SRE_ERROR_ILLEGAL; -- see python-dev discussion */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1157 | } |
| 1158 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1159 | LOCAL(int) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1160 | SRE_SEARCH(SRE_STATE* state, SRE_CODE* pattern) |
| 1161 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1162 | SRE_CHAR* ptr = state->start; |
| 1163 | SRE_CHAR* end = state->end; |
| 1164 | int status = 0; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1165 | int prefix_len = 0; |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1166 | int prefix_skip = 0; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1167 | SRE_CODE* prefix = NULL; |
| 1168 | SRE_CODE* charset = NULL; |
| 1169 | SRE_CODE* overlap = NULL; |
| 1170 | int flags = 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1171 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1172 | if (pattern[0] == SRE_OP_INFO) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1173 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1174 | /* <INFO> <1=skip> <2=flags> <3=min> <4=max> <5=prefix info> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1175 | |
| 1176 | flags = pattern[2]; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1177 | |
| 1178 | if (pattern[3] > 0) { |
| 1179 | /* adjust end point (but make sure we leave at least one |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1180 | character in there, so literal search will work) */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1181 | end -= pattern[3]-1; |
| 1182 | if (end <= ptr) |
| 1183 | end = ptr+1; |
| 1184 | } |
| 1185 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1186 | if (flags & SRE_INFO_PREFIX) { |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1187 | /* pattern starts with a known prefix */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1188 | /* <length> <skip> <prefix data> <overlap data> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1189 | prefix_len = pattern[5]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1190 | prefix_skip = pattern[6]; |
| 1191 | prefix = pattern + 7; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1192 | overlap = prefix + prefix_len - 1; |
| 1193 | } else if (flags & SRE_INFO_CHARSET) |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1194 | /* pattern starts with a character from a known set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1195 | /* <charset> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1196 | charset = pattern + 5; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1197 | |
| 1198 | pattern += 1 + pattern[1]; |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1199 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1200 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1201 | TRACE(("prefix = %p %d %d\n", prefix, prefix_len, prefix_skip)); |
| 1202 | TRACE(("charset = %p\n", charset)); |
| 1203 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1204 | #if defined(USE_FAST_SEARCH) |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1205 | if (prefix_len > 1) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1206 | /* pattern starts with a known prefix. use the overlap |
| 1207 | table to skip forward as fast as we possibly can */ |
| 1208 | int i = 0; |
| 1209 | end = state->end; |
| 1210 | while (ptr < end) { |
| 1211 | for (;;) { |
Fredrik Lundh | 0640e11 | 2000-06-30 13:55:15 +0000 | [diff] [blame] | 1212 | if ((SRE_CODE) ptr[0] != prefix[i]) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1213 | if (!i) |
| 1214 | break; |
| 1215 | else |
| 1216 | i = overlap[i]; |
| 1217 | } else { |
| 1218 | if (++i == prefix_len) { |
| 1219 | /* found a potential match */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1220 | TRACE(("|%p|%p|SEARCH SCAN\n", pattern, ptr)); |
| 1221 | state->start = ptr + 1 - prefix_len; |
| 1222 | state->ptr = ptr + 1 - prefix_len + prefix_skip; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1223 | if (flags & SRE_INFO_LITERAL) |
| 1224 | return 1; /* we got all of it */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1225 | status = SRE_MATCH(state, pattern + 2*prefix_skip, 1); |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1226 | if (status != 0) |
| 1227 | return status; |
| 1228 | /* close but no cigar -- try again */ |
| 1229 | i = overlap[i]; |
| 1230 | } |
| 1231 | break; |
| 1232 | } |
| 1233 | |
| 1234 | } |
| 1235 | ptr++; |
| 1236 | } |
| 1237 | return 0; |
| 1238 | } |
| 1239 | #endif |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 1240 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1241 | if (pattern[0] == SRE_OP_LITERAL) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1242 | /* pattern starts with a literal character. this is used |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1243 | for short prefixes, and if fast search is disabled */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1244 | SRE_CODE chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1245 | end = state->end; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1246 | for (;;) { |
| 1247 | while (ptr < end && (SRE_CODE) ptr[0] != chr) |
| 1248 | ptr++; |
| 1249 | if (ptr == end) |
| 1250 | return 0; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1251 | TRACE(("|%p|%p|SEARCH LITERAL\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1252 | state->start = ptr; |
| 1253 | state->ptr = ++ptr; |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 1254 | if (flags & SRE_INFO_LITERAL) |
| 1255 | return 1; /* we got all of it */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1256 | status = SRE_MATCH(state, pattern + 2, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1257 | if (status != 0) |
| 1258 | break; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1259 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1260 | } else if (charset) { |
| 1261 | /* pattern starts with a character from a known set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1262 | end = state->end; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1263 | for (;;) { |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1264 | while (ptr < end && !SRE_CHARSET(charset, ptr[0])) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1265 | ptr++; |
| 1266 | if (ptr == end) |
| 1267 | return 0; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1268 | TRACE(("|%p|%p|SEARCH CHARSET\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1269 | state->start = ptr; |
| 1270 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1271 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1272 | if (status != 0) |
| 1273 | break; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1274 | ptr++; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1275 | } |
| 1276 | } else |
| 1277 | /* general case */ |
| 1278 | while (ptr <= end) { |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1279 | TRACE(("|%p|%p|SEARCH\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1280 | state->start = state->ptr = ptr++; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1281 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1282 | if (status != 0) |
| 1283 | break; |
| 1284 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1285 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1286 | return status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1287 | } |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1288 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1289 | LOCAL(int) |
| 1290 | SRE_LITERAL_TEMPLATE(SRE_CHAR* ptr, int len) |
| 1291 | { |
| 1292 | /* check if given string is a literal template (i.e. no escapes) */ |
| 1293 | while (len-- > 0) |
| 1294 | if (*ptr++ == '\\') |
| 1295 | return 0; |
| 1296 | return 1; |
| 1297 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1298 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1299 | #if !defined(SRE_RECURSIVE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1300 | |
| 1301 | /* -------------------------------------------------------------------- */ |
| 1302 | /* factories and destructors */ |
| 1303 | |
| 1304 | /* see sre.h for object declarations */ |
| 1305 | |
| 1306 | staticforward PyTypeObject Pattern_Type; |
| 1307 | staticforward PyTypeObject Match_Type; |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1308 | staticforward PyTypeObject Scanner_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1309 | |
| 1310 | static PyObject * |
| 1311 | _compile(PyObject* self_, PyObject* args) |
| 1312 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1313 | /* "compile" pattern descriptor to pattern object */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1314 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1315 | PatternObject* self; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1316 | int i, n; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1317 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1318 | PyObject* pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1319 | int flags = 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1320 | PyObject* code; |
| 1321 | int groups = 0; |
| 1322 | PyObject* groupindex = NULL; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1323 | PyObject* indexgroup = NULL; |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1324 | if (!PyArg_ParseTuple(args, "OiO!|iOO", &pattern, &flags, |
| 1325 | &PyList_Type, &code, &groups, |
| 1326 | &groupindex, &indexgroup)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1327 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1328 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1329 | n = PyList_GET_SIZE(code); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1330 | |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 1331 | self = PyObject_NEW_VAR(PatternObject, &Pattern_Type, n); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1332 | if (!self) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1333 | return NULL; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1334 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1335 | self->codesize = n; |
| 1336 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1337 | for (i = 0; i < n; i++) { |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1338 | PyObject *o = PyList_GET_ITEM(code, i); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1339 | self->code[i] = (SRE_CODE) PyInt_AsLong(o); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1340 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1341 | |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1342 | if (PyErr_Occurred()) { |
| 1343 | PyObject_DEL(self); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1344 | return NULL; |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1345 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1346 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1347 | Py_INCREF(pattern); |
| 1348 | self->pattern = pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1349 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1350 | self->flags = flags; |
| 1351 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1352 | self->groups = groups; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1353 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1354 | Py_XINCREF(groupindex); |
| 1355 | self->groupindex = groupindex; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1356 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1357 | Py_XINCREF(indexgroup); |
| 1358 | self->indexgroup = indexgroup; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1359 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1360 | return (PyObject*) self; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1361 | } |
| 1362 | |
| 1363 | static PyObject * |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1364 | sre_codesize(PyObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1365 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1366 | return Py_BuildValue("i", sizeof(SRE_CODE)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1367 | } |
| 1368 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1369 | static PyObject * |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1370 | sre_getlower(PyObject* self, PyObject* args) |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1371 | { |
| 1372 | int character, flags; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1373 | if (!PyArg_ParseTuple(args, "ii", &character, &flags)) |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1374 | return NULL; |
| 1375 | if (flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1376 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1377 | if (flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1378 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1379 | return Py_BuildValue("i", sre_lower_unicode(character)); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1380 | #else |
| 1381 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1382 | #endif |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1383 | return Py_BuildValue("i", sre_lower(character)); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1384 | } |
| 1385 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1386 | LOCAL(void) |
| 1387 | state_reset(SRE_STATE* state) |
| 1388 | { |
| 1389 | int i; |
| 1390 | |
| 1391 | state->lastmark = 0; |
| 1392 | |
| 1393 | /* FIXME: dynamic! */ |
| 1394 | for (i = 0; i < SRE_MARK_SIZE; i++) |
| 1395 | state->mark[i] = NULL; |
| 1396 | |
| 1397 | state->lastindex = -1; |
| 1398 | |
| 1399 | state->repeat = NULL; |
| 1400 | |
| 1401 | mark_fini(state); |
| 1402 | } |
| 1403 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1404 | static void* |
| 1405 | getstring(PyObject* string, int* p_length, int* p_charsize) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1406 | { |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1407 | /* given a python object, return a data pointer, a length (in |
| 1408 | characters), and a character size. return NULL if the object |
| 1409 | is not a string (or not compatible) */ |
| 1410 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1411 | PyBufferProcs *buffer; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1412 | int size, bytes, charsize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1413 | void* ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1414 | |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1415 | #if defined(HAVE_UNICODE) |
| 1416 | if (PyUnicode_Check(string)) { |
| 1417 | /* unicode strings doesn't always support the buffer interface */ |
| 1418 | ptr = (void*) PyUnicode_AS_DATA(string); |
| 1419 | bytes = PyUnicode_GET_DATA_SIZE(string); |
| 1420 | size = PyUnicode_GET_SIZE(string); |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1421 | charsize = sizeof(Py_UNICODE); |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1422 | |
| 1423 | } else { |
| 1424 | #endif |
| 1425 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1426 | /* get pointer to string buffer */ |
| 1427 | buffer = string->ob_type->tp_as_buffer; |
| 1428 | if (!buffer || !buffer->bf_getreadbuffer || !buffer->bf_getsegcount || |
| 1429 | buffer->bf_getsegcount(string, NULL) != 1) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1430 | PyErr_SetString(PyExc_TypeError, "expected string or buffer"); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1431 | return NULL; |
| 1432 | } |
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 | /* determine buffer size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1435 | bytes = buffer->bf_getreadbuffer(string, 0, &ptr); |
| 1436 | if (bytes < 0) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1437 | PyErr_SetString(PyExc_TypeError, "buffer has negative size"); |
| 1438 | return NULL; |
| 1439 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1440 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1441 | /* determine character size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1442 | #if PY_VERSION_HEX >= 0x01060000 |
| 1443 | size = PyObject_Size(string); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1444 | #else |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1445 | size = PyObject_Length(string); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1446 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1447 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1448 | if (PyString_Check(string) || bytes == size) |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1449 | charsize = 1; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1450 | #if defined(HAVE_UNICODE) |
| 1451 | else if (bytes == (int) (size * sizeof(Py_UNICODE))) |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1452 | charsize = sizeof(Py_UNICODE); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1453 | #endif |
| 1454 | else { |
| 1455 | PyErr_SetString(PyExc_TypeError, "buffer size mismatch"); |
| 1456 | return NULL; |
| 1457 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1458 | |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1459 | #if defined(HAVE_UNICODE) |
| 1460 | } |
| 1461 | #endif |
| 1462 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1463 | *p_length = size; |
| 1464 | *p_charsize = charsize; |
| 1465 | |
| 1466 | return ptr; |
| 1467 | } |
| 1468 | |
| 1469 | LOCAL(PyObject*) |
| 1470 | state_init(SRE_STATE* state, PatternObject* pattern, PyObject* string, |
| 1471 | int start, int end) |
| 1472 | { |
| 1473 | /* prepare state object */ |
| 1474 | |
| 1475 | int length; |
| 1476 | int charsize; |
| 1477 | void* ptr; |
| 1478 | |
| 1479 | memset(state, 0, sizeof(SRE_STATE)); |
| 1480 | |
| 1481 | state->lastindex = -1; |
| 1482 | |
| 1483 | ptr = getstring(string, &length, &charsize); |
| 1484 | if (!ptr) |
| 1485 | return NULL; |
| 1486 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1487 | /* adjust boundaries */ |
| 1488 | if (start < 0) |
| 1489 | start = 0; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1490 | else if (start > length) |
| 1491 | start = length; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1492 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1493 | if (end < 0) |
| 1494 | end = 0; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 1495 | else if (end > length) |
| 1496 | end = length; |
| 1497 | |
| 1498 | state->charsize = charsize; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1499 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1500 | state->beginning = ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1501 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1502 | state->start = (void*) ((char*) ptr + start * state->charsize); |
| 1503 | state->end = (void*) ((char*) ptr + end * state->charsize); |
| 1504 | |
| 1505 | Py_INCREF(string); |
| 1506 | state->string = string; |
| 1507 | state->pos = start; |
| 1508 | state->endpos = end; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1509 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1510 | if (pattern->flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1511 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1512 | else if (pattern->flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1513 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1514 | state->lower = sre_lower_unicode; |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1515 | #else |
| 1516 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1517 | #endif |
| 1518 | else |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1519 | state->lower = sre_lower; |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1520 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1521 | return string; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1522 | } |
| 1523 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1524 | LOCAL(void) |
| 1525 | state_fini(SRE_STATE* state) |
| 1526 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1527 | Py_XDECREF(state->string); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1528 | mark_fini(state); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1529 | } |
| 1530 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1531 | /* calculate offset from start of string */ |
| 1532 | #define STATE_OFFSET(state, member)\ |
| 1533 | (((char*)(member) - (char*)(state)->beginning) / (state)->charsize) |
| 1534 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1535 | LOCAL(PyObject*) |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1536 | state_getslice(SRE_STATE* state, int index, PyObject* string, int empty) |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1537 | { |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1538 | int i, j; |
| 1539 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1540 | index = (index - 1) * 2; |
| 1541 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1542 | if (string == Py_None || !state->mark[index] || !state->mark[index+1]) { |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1543 | if (empty) |
| 1544 | /* want empty string */ |
| 1545 | i = j = 0; |
| 1546 | else { |
| 1547 | Py_INCREF(Py_None); |
| 1548 | return Py_None; |
| 1549 | } |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1550 | } else { |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1551 | i = STATE_OFFSET(state, state->mark[index]); |
| 1552 | j = STATE_OFFSET(state, state->mark[index+1]); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1553 | } |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1554 | |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1555 | return PySequence_GetSlice(string, i, j); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1556 | } |
| 1557 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1558 | static void |
| 1559 | pattern_error(int status) |
| 1560 | { |
| 1561 | switch (status) { |
| 1562 | case SRE_ERROR_RECURSION_LIMIT: |
| 1563 | PyErr_SetString( |
| 1564 | PyExc_RuntimeError, |
| 1565 | "maximum recursion limit exceeded" |
| 1566 | ); |
| 1567 | break; |
| 1568 | case SRE_ERROR_MEMORY: |
| 1569 | PyErr_NoMemory(); |
| 1570 | break; |
| 1571 | default: |
| 1572 | /* other error codes indicate compiler/engine bugs */ |
| 1573 | PyErr_SetString( |
| 1574 | PyExc_RuntimeError, |
| 1575 | "internal error in regular expression engine" |
| 1576 | ); |
| 1577 | } |
| 1578 | } |
| 1579 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1580 | static PyObject* |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1581 | pattern_new_match(PatternObject* pattern, SRE_STATE* state, int status) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1582 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1583 | /* create match object (from state object) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1584 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1585 | MatchObject* match; |
| 1586 | int i, j; |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1587 | char* base; |
| 1588 | int n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1589 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1590 | if (status > 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1591 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1592 | /* create match object (with room for extra group marks) */ |
| 1593 | match = PyObject_NEW_VAR(MatchObject, &Match_Type, |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1594 | 2*(pattern->groups+1)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1595 | if (!match) |
| 1596 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1597 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1598 | Py_INCREF(pattern); |
| 1599 | match->pattern = pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1600 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1601 | Py_INCREF(state->string); |
| 1602 | match->string = state->string; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1603 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1604 | match->regs = NULL; |
| 1605 | match->groups = pattern->groups+1; |
| 1606 | |
| 1607 | /* fill in group slices */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1608 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1609 | base = (char*) state->beginning; |
| 1610 | n = state->charsize; |
| 1611 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1612 | match->mark[0] = ((char*) state->start - base) / n; |
| 1613 | match->mark[1] = ((char*) state->ptr - base) / n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1614 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1615 | for (i = j = 0; i < pattern->groups; i++, j+=2) |
| 1616 | if (j+1 <= state->lastmark && state->mark[j] && state->mark[j+1]) { |
| 1617 | match->mark[j+2] = ((char*) state->mark[j] - base) / n; |
| 1618 | match->mark[j+3] = ((char*) state->mark[j+1] - base) / n; |
| 1619 | } else |
| 1620 | match->mark[j+2] = match->mark[j+3] = -1; /* undefined */ |
| 1621 | |
| 1622 | match->pos = state->pos; |
| 1623 | match->endpos = state->endpos; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1624 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1625 | match->lastindex = state->lastindex; |
| 1626 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1627 | return (PyObject*) match; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1628 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1629 | } else if (status == 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1630 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1631 | /* no match */ |
| 1632 | Py_INCREF(Py_None); |
| 1633 | return Py_None; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1634 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1635 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1636 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1637 | /* internal error */ |
| 1638 | pattern_error(status); |
| 1639 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1640 | } |
| 1641 | |
| 1642 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1643 | pattern_scanner(PatternObject* pattern, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1644 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1645 | /* create search state object */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1646 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1647 | ScannerObject* self; |
| 1648 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1649 | PyObject* string; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1650 | int start = 0; |
| 1651 | int end = INT_MAX; |
| 1652 | if (!PyArg_ParseTuple(args, "O|ii:scanner", &string, &start, &end)) |
| 1653 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1654 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1655 | /* create scanner object */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1656 | self = PyObject_NEW(ScannerObject, &Scanner_Type); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1657 | if (!self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1658 | return NULL; |
| 1659 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1660 | string = state_init(&self->state, pattern, string, start, end); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1661 | if (!string) { |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1662 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1663 | return NULL; |
| 1664 | } |
| 1665 | |
| 1666 | Py_INCREF(pattern); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1667 | self->pattern = (PyObject*) pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1668 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1669 | return (PyObject*) self; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1670 | } |
| 1671 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1672 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1673 | pattern_dealloc(PatternObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1674 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1675 | Py_XDECREF(self->pattern); |
| 1676 | Py_XDECREF(self->groupindex); |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1677 | Py_XDECREF(self->indexgroup); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1678 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1679 | } |
| 1680 | |
| 1681 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1682 | pattern_match(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1683 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1684 | SRE_STATE state; |
| 1685 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1686 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1687 | PyObject* string; |
| 1688 | int start = 0; |
| 1689 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1690 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
| 1691 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:match", kwlist, |
| 1692 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1693 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1694 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1695 | string = state_init(&state, self, string, start, end); |
| 1696 | if (!string) |
| 1697 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1698 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1699 | state.ptr = state.start; |
| 1700 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1701 | TRACE(("|%p|%p|MATCH\n", PatternObject_GetCode(self), state.ptr)); |
| 1702 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1703 | if (state.charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1704 | status = sre_match(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1705 | } else { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1706 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1707 | status = sre_umatch(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1708 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1709 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1710 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1711 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
| 1712 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1713 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1714 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1715 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1716 | } |
| 1717 | |
| 1718 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1719 | pattern_search(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1720 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1721 | SRE_STATE state; |
| 1722 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1723 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1724 | PyObject* string; |
| 1725 | int start = 0; |
| 1726 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1727 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
| 1728 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:search", kwlist, |
| 1729 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1730 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1731 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1732 | string = state_init(&state, self, string, start, end); |
| 1733 | if (!string) |
| 1734 | return NULL; |
| 1735 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1736 | TRACE(("|%p|%p|SEARCH\n", PatternObject_GetCode(self), state.ptr)); |
| 1737 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1738 | if (state.charsize == 1) { |
| 1739 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1740 | } else { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1741 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1742 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1743 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1744 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1745 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1746 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
| 1747 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1748 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1749 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1750 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1751 | } |
| 1752 | |
| 1753 | static PyObject* |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1754 | call(char* module, char* function, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1755 | { |
| 1756 | PyObject* name; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1757 | PyObject* mod; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1758 | PyObject* func; |
| 1759 | PyObject* result; |
| 1760 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1761 | if (!args) |
| 1762 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1763 | name = PyString_FromString(module); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1764 | if (!name) |
| 1765 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1766 | mod = PyImport_Import(name); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1767 | Py_DECREF(name); |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1768 | if (!mod) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1769 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1770 | func = PyObject_GetAttrString(mod, function); |
| 1771 | Py_DECREF(mod); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1772 | if (!func) |
| 1773 | return NULL; |
| 1774 | result = PyObject_CallObject(func, args); |
| 1775 | Py_DECREF(func); |
| 1776 | Py_DECREF(args); |
| 1777 | return result; |
| 1778 | } |
| 1779 | |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1780 | #ifdef USE_BUILTIN_COPY |
| 1781 | static int |
| 1782 | deepcopy(PyObject** object, PyObject* memo) |
| 1783 | { |
| 1784 | PyObject* copy; |
| 1785 | |
| 1786 | copy = call( |
| 1787 | "copy", "deepcopy", |
| 1788 | Py_BuildValue("OO", *object, memo) |
| 1789 | ); |
| 1790 | if (!copy) |
| 1791 | return 0; |
| 1792 | |
| 1793 | Py_DECREF(*object); |
| 1794 | *object = copy; |
| 1795 | |
| 1796 | return 1; /* success */ |
| 1797 | } |
| 1798 | #endif |
| 1799 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1800 | static PyObject* |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1801 | join(PyObject* list, PyObject* pattern) |
| 1802 | { |
| 1803 | /* join list elements */ |
| 1804 | |
| 1805 | PyObject* joiner; |
| 1806 | #if PY_VERSION_HEX >= 0x01060000 |
| 1807 | PyObject* function; |
| 1808 | PyObject* args; |
| 1809 | #endif |
| 1810 | PyObject* result; |
| 1811 | |
| 1812 | switch (PyList_GET_SIZE(list)) { |
| 1813 | case 0: |
| 1814 | Py_DECREF(list); |
| 1815 | return PyString_FromString(""); |
| 1816 | case 1: |
| 1817 | result = PyList_GET_ITEM(list, 0); |
| 1818 | Py_INCREF(result); |
| 1819 | Py_DECREF(list); |
| 1820 | return result; |
| 1821 | } |
| 1822 | |
| 1823 | /* two or more elements: slice out a suitable separator from the |
| 1824 | first member, and use that to join the entire list */ |
| 1825 | |
| 1826 | joiner = PySequence_GetSlice(pattern, 0, 0); |
| 1827 | if (!joiner) |
| 1828 | return NULL; |
| 1829 | |
| 1830 | #if PY_VERSION_HEX >= 0x01060000 |
| 1831 | function = PyObject_GetAttrString(joiner, "join"); |
| 1832 | if (!function) { |
| 1833 | Py_DECREF(joiner); |
| 1834 | return NULL; |
| 1835 | } |
| 1836 | args = PyTuple_New(1); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 1837 | if (!args) { |
| 1838 | Py_DECREF(function); |
| 1839 | Py_DECREF(joiner); |
| 1840 | return NULL; |
| 1841 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1842 | PyTuple_SET_ITEM(args, 0, list); |
| 1843 | result = PyObject_CallObject(function, args); |
| 1844 | Py_DECREF(args); /* also removes list */ |
| 1845 | Py_DECREF(function); |
| 1846 | #else |
| 1847 | result = call( |
| 1848 | "string", "join", |
| 1849 | Py_BuildValue("OO", list, joiner) |
| 1850 | ); |
| 1851 | #endif |
| 1852 | Py_DECREF(joiner); |
| 1853 | |
| 1854 | return result; |
| 1855 | } |
| 1856 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1857 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1858 | pattern_findall(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1859 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1860 | SRE_STATE state; |
| 1861 | PyObject* list; |
| 1862 | int status; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1863 | int i, b, e; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1864 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1865 | PyObject* string; |
| 1866 | int start = 0; |
| 1867 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1868 | static char* kwlist[] = { "source", "pos", "endpos", NULL }; |
| 1869 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:findall", kwlist, |
| 1870 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1871 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1872 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1873 | string = state_init(&state, self, string, start, end); |
| 1874 | if (!string) |
| 1875 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1876 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1877 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 1878 | if (!list) { |
| 1879 | state_fini(&state); |
| 1880 | return NULL; |
| 1881 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1882 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1883 | while (state.start <= state.end) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1884 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1885 | PyObject* item; |
| 1886 | |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 1887 | state_reset(&state); |
| 1888 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1889 | state.ptr = state.start; |
| 1890 | |
| 1891 | if (state.charsize == 1) { |
| 1892 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1893 | } else { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1894 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1895 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1896 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1897 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1898 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1899 | if (status <= 0) { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1900 | if (status == 0) |
| 1901 | break; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1902 | pattern_error(status); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1903 | goto error; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1904 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1905 | |
| 1906 | /* don't bother to build a match object */ |
| 1907 | switch (self->groups) { |
| 1908 | case 0: |
| 1909 | b = STATE_OFFSET(&state, state.start); |
| 1910 | e = STATE_OFFSET(&state, state.ptr); |
| 1911 | item = PySequence_GetSlice(string, b, e); |
| 1912 | if (!item) |
| 1913 | goto error; |
| 1914 | break; |
| 1915 | case 1: |
| 1916 | item = state_getslice(&state, 1, string, 1); |
| 1917 | if (!item) |
| 1918 | goto error; |
| 1919 | break; |
| 1920 | default: |
| 1921 | item = PyTuple_New(self->groups); |
| 1922 | if (!item) |
| 1923 | goto error; |
| 1924 | for (i = 0; i < self->groups; i++) { |
| 1925 | PyObject* o = state_getslice(&state, i+1, string, 1); |
| 1926 | if (!o) { |
| 1927 | Py_DECREF(item); |
| 1928 | goto error; |
| 1929 | } |
| 1930 | PyTuple_SET_ITEM(item, i, o); |
| 1931 | } |
| 1932 | break; |
| 1933 | } |
| 1934 | |
| 1935 | status = PyList_Append(list, item); |
| 1936 | Py_DECREF(item); |
| 1937 | if (status < 0) |
| 1938 | goto error; |
| 1939 | |
| 1940 | if (state.ptr == state.start) |
| 1941 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 1942 | else |
| 1943 | state.start = state.ptr; |
| 1944 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1945 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1946 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1947 | state_fini(&state); |
| 1948 | return list; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1949 | |
| 1950 | error: |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1951 | Py_DECREF(list); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1952 | state_fini(&state); |
| 1953 | return NULL; |
| 1954 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1955 | } |
| 1956 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1957 | static PyObject* |
| 1958 | pattern_split(PatternObject* self, PyObject* args, PyObject* kw) |
| 1959 | { |
| 1960 | SRE_STATE state; |
| 1961 | PyObject* list; |
| 1962 | PyObject* item; |
| 1963 | int status; |
| 1964 | int n; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1965 | int i; |
| 1966 | void* last; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1967 | |
| 1968 | PyObject* string; |
| 1969 | int maxsplit = 0; |
| 1970 | static char* kwlist[] = { "source", "maxsplit", NULL }; |
| 1971 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|i:split", kwlist, |
| 1972 | &string, &maxsplit)) |
| 1973 | return NULL; |
| 1974 | |
| 1975 | string = state_init(&state, self, string, 0, INT_MAX); |
| 1976 | if (!string) |
| 1977 | return NULL; |
| 1978 | |
| 1979 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 1980 | if (!list) { |
| 1981 | state_fini(&state); |
| 1982 | return NULL; |
| 1983 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1984 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1985 | n = 0; |
| 1986 | last = state.start; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1987 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1988 | while (!maxsplit || n < maxsplit) { |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 1989 | |
| 1990 | state_reset(&state); |
| 1991 | |
| 1992 | state.ptr = state.start; |
| 1993 | |
| 1994 | if (state.charsize == 1) { |
| 1995 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1996 | } else { |
| 1997 | #if defined(HAVE_UNICODE) |
| 1998 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
| 1999 | #endif |
| 2000 | } |
| 2001 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2002 | if (status <= 0) { |
| 2003 | if (status == 0) |
| 2004 | break; |
| 2005 | pattern_error(status); |
| 2006 | goto error; |
| 2007 | } |
| 2008 | |
| 2009 | if (state.start == state.ptr) { |
| 2010 | if (last == state.end) |
| 2011 | break; |
| 2012 | /* skip one character */ |
| 2013 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 2014 | continue; |
| 2015 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2016 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2017 | /* get segment before this match */ |
| 2018 | item = PySequence_GetSlice( |
| 2019 | string, STATE_OFFSET(&state, last), |
| 2020 | STATE_OFFSET(&state, state.start) |
| 2021 | ); |
| 2022 | if (!item) |
| 2023 | goto error; |
| 2024 | status = PyList_Append(list, item); |
| 2025 | Py_DECREF(item); |
| 2026 | if (status < 0) |
| 2027 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2028 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2029 | /* add groups (if any) */ |
| 2030 | for (i = 0; i < self->groups; i++) { |
| 2031 | item = state_getslice(&state, i+1, string, 0); |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2032 | if (!item) |
| 2033 | goto error; |
| 2034 | status = PyList_Append(list, item); |
| 2035 | Py_DECREF(item); |
| 2036 | if (status < 0) |
| 2037 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2038 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2039 | |
| 2040 | n = n + 1; |
| 2041 | |
| 2042 | last = state.start = state.ptr; |
| 2043 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2044 | } |
| 2045 | |
Fredrik Lundh | f864aa8 | 2001-10-22 06:01:56 +0000 | [diff] [blame] | 2046 | /* get segment following last match (even if empty) */ |
| 2047 | item = PySequence_GetSlice( |
| 2048 | string, STATE_OFFSET(&state, last), state.endpos |
| 2049 | ); |
| 2050 | if (!item) |
| 2051 | goto error; |
| 2052 | status = PyList_Append(list, item); |
| 2053 | Py_DECREF(item); |
| 2054 | if (status < 0) |
| 2055 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2056 | |
| 2057 | state_fini(&state); |
| 2058 | return list; |
| 2059 | |
| 2060 | error: |
| 2061 | Py_DECREF(list); |
| 2062 | state_fini(&state); |
| 2063 | return NULL; |
| 2064 | |
| 2065 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 2066 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2067 | static PyObject* |
| 2068 | pattern_subx(PatternObject* self, PyObject* template, PyObject* string, |
| 2069 | int count, int subn) |
| 2070 | { |
| 2071 | SRE_STATE state; |
| 2072 | PyObject* list; |
| 2073 | PyObject* item; |
| 2074 | PyObject* filter; |
| 2075 | PyObject* args; |
| 2076 | PyObject* match; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 2077 | void* ptr; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2078 | int status; |
| 2079 | int n; |
| 2080 | int i, b, e; |
| 2081 | int filter_is_callable; |
| 2082 | |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2083 | if (PyCallable_Check(template)) { |
| 2084 | /* sub/subn takes either a function or a template */ |
| 2085 | filter = template; |
| 2086 | Py_INCREF(filter); |
| 2087 | filter_is_callable = 1; |
| 2088 | } else { |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 2089 | /* if not callable, check if it's a literal string */ |
| 2090 | int literal; |
| 2091 | ptr = getstring(template, &n, &b); |
| 2092 | if (ptr) { |
| 2093 | if (b == 1) { |
| 2094 | literal = sre_literal_template(ptr, n); |
| 2095 | } else { |
| 2096 | #if defined(HAVE_UNICODE) |
| 2097 | literal = sre_uliteral_template(ptr, n); |
| 2098 | #endif |
| 2099 | } |
| 2100 | } else { |
| 2101 | PyErr_Clear(); |
| 2102 | literal = 0; |
| 2103 | } |
| 2104 | if (literal) { |
| 2105 | filter = template; |
| 2106 | Py_INCREF(filter); |
| 2107 | filter_is_callable = 0; |
| 2108 | } else { |
| 2109 | /* not a literal; hand it over to the template compiler */ |
| 2110 | filter = call( |
| 2111 | SRE_MODULE, "_subx", |
| 2112 | Py_BuildValue("OO", self, template) |
| 2113 | ); |
| 2114 | if (!filter) |
| 2115 | return NULL; |
| 2116 | filter_is_callable = PyCallable_Check(filter); |
| 2117 | } |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2118 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2119 | |
| 2120 | string = state_init(&state, self, string, 0, INT_MAX); |
| 2121 | if (!string) |
| 2122 | return NULL; |
| 2123 | |
| 2124 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 2125 | if (!list) { |
| 2126 | state_fini(&state); |
| 2127 | return NULL; |
| 2128 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2129 | |
| 2130 | n = i = 0; |
| 2131 | |
| 2132 | while (!count || n < count) { |
| 2133 | |
| 2134 | state_reset(&state); |
| 2135 | |
| 2136 | state.ptr = state.start; |
| 2137 | |
| 2138 | if (state.charsize == 1) { |
| 2139 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 2140 | } else { |
| 2141 | #if defined(HAVE_UNICODE) |
| 2142 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
| 2143 | #endif |
| 2144 | } |
| 2145 | |
| 2146 | if (status <= 0) { |
| 2147 | if (status == 0) |
| 2148 | break; |
| 2149 | pattern_error(status); |
| 2150 | goto error; |
| 2151 | } |
| 2152 | |
| 2153 | b = STATE_OFFSET(&state, state.start); |
| 2154 | e = STATE_OFFSET(&state, state.ptr); |
| 2155 | |
| 2156 | if (i < b) { |
| 2157 | /* get segment before this match */ |
| 2158 | item = PySequence_GetSlice(string, i, b); |
| 2159 | if (!item) |
| 2160 | goto error; |
| 2161 | status = PyList_Append(list, item); |
| 2162 | Py_DECREF(item); |
| 2163 | if (status < 0) |
| 2164 | goto error; |
| 2165 | |
| 2166 | } else if (i == b && i == e && n > 0) |
| 2167 | /* ignore empty match on latest position */ |
| 2168 | goto next; |
| 2169 | |
| 2170 | if (filter_is_callable) { |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2171 | /* pass match object through filter */ |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2172 | match = pattern_new_match(self, &state, 1); |
| 2173 | if (!match) |
| 2174 | goto error; |
| 2175 | args = Py_BuildValue("(O)", match); |
| 2176 | if (!args) { |
| 2177 | Py_DECREF(args); |
| 2178 | goto error; |
| 2179 | } |
| 2180 | item = PyObject_CallObject(filter, args); |
| 2181 | Py_DECREF(args); |
| 2182 | Py_DECREF(match); |
| 2183 | if (!item) |
| 2184 | goto error; |
| 2185 | } else { |
| 2186 | /* filter is literal string */ |
| 2187 | item = filter; |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2188 | Py_INCREF(item); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2189 | } |
| 2190 | |
| 2191 | /* add to list */ |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame^] | 2192 | if (item != Py_None) { |
| 2193 | status = PyList_Append(list, item); |
| 2194 | Py_DECREF(item); |
| 2195 | if (status < 0) |
| 2196 | goto error; |
| 2197 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2198 | |
| 2199 | i = e; |
| 2200 | n = n + 1; |
| 2201 | |
| 2202 | next: |
| 2203 | /* move on */ |
| 2204 | if (state.ptr == state.start) |
| 2205 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 2206 | else |
| 2207 | state.start = state.ptr; |
| 2208 | |
| 2209 | } |
| 2210 | |
| 2211 | /* get segment following last match */ |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2212 | if (i < state.endpos) { |
| 2213 | item = PySequence_GetSlice(string, i, state.endpos); |
| 2214 | if (!item) |
| 2215 | goto error; |
| 2216 | status = PyList_Append(list, item); |
| 2217 | Py_DECREF(item); |
| 2218 | if (status < 0) |
| 2219 | goto error; |
| 2220 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2221 | |
| 2222 | state_fini(&state); |
| 2223 | |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2224 | /* convert list to single string (also removes list) */ |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2225 | item = join(list, self->pattern); |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 2226 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2227 | if (!item) |
| 2228 | return NULL; |
| 2229 | |
| 2230 | if (subn) |
| 2231 | return Py_BuildValue("Ni", item, n); |
| 2232 | |
| 2233 | return item; |
| 2234 | |
| 2235 | error: |
| 2236 | Py_DECREF(list); |
| 2237 | state_fini(&state); |
| 2238 | return NULL; |
| 2239 | |
| 2240 | } |
| 2241 | |
| 2242 | static PyObject* |
| 2243 | pattern_sub(PatternObject* self, PyObject* args, PyObject* kw) |
| 2244 | { |
| 2245 | PyObject* template; |
| 2246 | PyObject* string; |
| 2247 | int count = 0; |
| 2248 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
| 2249 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|i:sub", kwlist, |
| 2250 | &template, &string, &count)) |
| 2251 | return NULL; |
| 2252 | |
| 2253 | return pattern_subx(self, template, string, count, 0); |
| 2254 | } |
| 2255 | |
| 2256 | static PyObject* |
| 2257 | pattern_subn(PatternObject* self, PyObject* args, PyObject* kw) |
| 2258 | { |
| 2259 | PyObject* template; |
| 2260 | PyObject* string; |
| 2261 | int count = 0; |
| 2262 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
| 2263 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|i:subn", kwlist, |
| 2264 | &template, &string, &count)) |
| 2265 | return NULL; |
| 2266 | |
| 2267 | return pattern_subx(self, template, string, count, 1); |
| 2268 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 2269 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2270 | static PyObject* |
| 2271 | pattern_copy(PatternObject* self, PyObject* args) |
| 2272 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2273 | #ifdef USE_BUILTIN_COPY |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2274 | PatternObject* copy; |
| 2275 | int offset; |
| 2276 | |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2277 | if (args != Py_None && !PyArg_ParseTuple(args, ":__copy__")) |
| 2278 | return NULL; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2279 | |
| 2280 | copy = PyObject_NEW_VAR(PatternObject, &Pattern_Type, self->codesize); |
| 2281 | if (!copy) |
| 2282 | return NULL; |
| 2283 | |
| 2284 | offset = offsetof(PatternObject, groups); |
| 2285 | |
| 2286 | Py_XINCREF(self->groupindex); |
| 2287 | Py_XINCREF(self->indexgroup); |
| 2288 | Py_XINCREF(self->pattern); |
| 2289 | |
| 2290 | memcpy((char*) copy + offset, (char*) self + offset, |
| 2291 | sizeof(PatternObject) + self->codesize * sizeof(SRE_CODE) - offset); |
| 2292 | |
| 2293 | return (PyObject*) copy; |
| 2294 | #else |
| 2295 | PyErr_SetString(PyExc_TypeError, "cannot copy this pattern object"); |
| 2296 | return NULL; |
| 2297 | #endif |
| 2298 | } |
| 2299 | |
| 2300 | static PyObject* |
| 2301 | pattern_deepcopy(PatternObject* self, PyObject* args) |
| 2302 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2303 | #ifdef USE_BUILTIN_COPY |
| 2304 | PatternObject* copy; |
| 2305 | |
| 2306 | PyObject* memo; |
| 2307 | if (!PyArg_ParseTuple(args, "O:__deepcopy__", &memo)) |
| 2308 | return NULL; |
| 2309 | |
| 2310 | copy = (PatternObject*) pattern_copy(self, Py_None); |
| 2311 | if (!copy) |
| 2312 | return NULL; |
| 2313 | |
| 2314 | if (!deepcopy(©->groupindex, memo) || |
| 2315 | !deepcopy(©->indexgroup, memo) || |
| 2316 | !deepcopy(©->pattern, memo)) { |
| 2317 | Py_DECREF(copy); |
| 2318 | return NULL; |
| 2319 | } |
| 2320 | |
| 2321 | #else |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2322 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this pattern object"); |
| 2323 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2324 | #endif |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2325 | } |
| 2326 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2327 | static PyMethodDef pattern_methods[] = { |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2328 | {"match", (PyCFunction) pattern_match, METH_VARARGS|METH_KEYWORDS}, |
| 2329 | {"search", (PyCFunction) pattern_search, METH_VARARGS|METH_KEYWORDS}, |
| 2330 | {"sub", (PyCFunction) pattern_sub, METH_VARARGS|METH_KEYWORDS}, |
| 2331 | {"subn", (PyCFunction) pattern_subn, METH_VARARGS|METH_KEYWORDS}, |
| 2332 | {"split", (PyCFunction) pattern_split, METH_VARARGS|METH_KEYWORDS}, |
| 2333 | {"findall", (PyCFunction) pattern_findall, METH_VARARGS|METH_KEYWORDS}, |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2334 | {"scanner", (PyCFunction) pattern_scanner, METH_VARARGS}, |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2335 | {"__copy__", (PyCFunction) pattern_copy, METH_VARARGS}, |
| 2336 | {"__deepcopy__", (PyCFunction) pattern_deepcopy, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2337 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2338 | }; |
| 2339 | |
| 2340 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2341 | pattern_getattr(PatternObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2342 | { |
| 2343 | PyObject* res; |
| 2344 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2345 | res = Py_FindMethod(pattern_methods, (PyObject*) self, name); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2346 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2347 | if (res) |
| 2348 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2349 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2350 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2351 | |
| 2352 | /* attributes */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2353 | if (!strcmp(name, "pattern")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2354 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2355 | return self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2356 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2357 | |
| 2358 | if (!strcmp(name, "flags")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2359 | return Py_BuildValue("i", self->flags); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2360 | |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 2361 | if (!strcmp(name, "groups")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2362 | return Py_BuildValue("i", self->groups); |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 2363 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2364 | if (!strcmp(name, "groupindex") && self->groupindex) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2365 | Py_INCREF(self->groupindex); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2366 | return self->groupindex; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2367 | } |
| 2368 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2369 | PyErr_SetString(PyExc_AttributeError, name); |
| 2370 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2371 | } |
| 2372 | |
| 2373 | statichere PyTypeObject Pattern_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2374 | PyObject_HEAD_INIT(NULL) |
| 2375 | 0, "SRE_Pattern", |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2376 | sizeof(PatternObject), sizeof(SRE_CODE), |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2377 | (destructor)pattern_dealloc, /*tp_dealloc*/ |
| 2378 | 0, /*tp_print*/ |
| 2379 | (getattrfunc)pattern_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2380 | }; |
| 2381 | |
| 2382 | /* -------------------------------------------------------------------- */ |
| 2383 | /* match methods */ |
| 2384 | |
| 2385 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2386 | match_dealloc(MatchObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2387 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2388 | Py_XDECREF(self->regs); |
| 2389 | Py_XDECREF(self->string); |
| 2390 | Py_DECREF(self->pattern); |
| 2391 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2392 | } |
| 2393 | |
| 2394 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2395 | match_getslice_by_index(MatchObject* self, int index, PyObject* def) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2396 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2397 | if (index < 0 || index >= self->groups) { |
| 2398 | /* raise IndexError if we were given a bad group number */ |
| 2399 | PyErr_SetString( |
| 2400 | PyExc_IndexError, |
| 2401 | "no such group" |
| 2402 | ); |
| 2403 | return NULL; |
| 2404 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2405 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2406 | index *= 2; |
| 2407 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2408 | if (self->string == Py_None || self->mark[index] < 0) { |
| 2409 | /* return default value if the string or group is undefined */ |
| 2410 | Py_INCREF(def); |
| 2411 | return def; |
| 2412 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2413 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2414 | return PySequence_GetSlice( |
| 2415 | self->string, self->mark[index], self->mark[index+1] |
| 2416 | ); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2417 | } |
| 2418 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2419 | static int |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2420 | match_getindex(MatchObject* self, PyObject* index) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2421 | { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2422 | int i; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2423 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2424 | if (PyInt_Check(index)) |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2425 | return (int) PyInt_AS_LONG(index); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2426 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2427 | i = -1; |
| 2428 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2429 | if (self->pattern->groupindex) { |
| 2430 | index = PyObject_GetItem(self->pattern->groupindex, index); |
| 2431 | if (index) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2432 | if (PyInt_Check(index)) |
| 2433 | i = (int) PyInt_AS_LONG(index); |
| 2434 | Py_DECREF(index); |
| 2435 | } else |
| 2436 | PyErr_Clear(); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2437 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2438 | |
| 2439 | return i; |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2440 | } |
| 2441 | |
| 2442 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2443 | match_getslice(MatchObject* self, PyObject* index, PyObject* def) |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2444 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2445 | return match_getslice_by_index(self, match_getindex(self, index), def); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2446 | } |
| 2447 | |
| 2448 | static PyObject* |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 2449 | match_expand(MatchObject* self, PyObject* args) |
| 2450 | { |
| 2451 | PyObject* template; |
| 2452 | if (!PyArg_ParseTuple(args, "O:expand", &template)) |
| 2453 | return NULL; |
| 2454 | |
| 2455 | /* delegate to Python code */ |
| 2456 | return call( |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2457 | SRE_MODULE, "_expand", |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 2458 | Py_BuildValue("OOO", self->pattern, self, template) |
| 2459 | ); |
| 2460 | } |
| 2461 | |
| 2462 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2463 | match_group(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2464 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2465 | PyObject* result; |
| 2466 | int i, size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2467 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2468 | size = PyTuple_GET_SIZE(args); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2469 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2470 | switch (size) { |
| 2471 | case 0: |
| 2472 | result = match_getslice(self, Py_False, Py_None); |
| 2473 | break; |
| 2474 | case 1: |
| 2475 | result = match_getslice(self, PyTuple_GET_ITEM(args, 0), Py_None); |
| 2476 | break; |
| 2477 | default: |
| 2478 | /* fetch multiple items */ |
| 2479 | result = PyTuple_New(size); |
| 2480 | if (!result) |
| 2481 | return NULL; |
| 2482 | for (i = 0; i < size; i++) { |
| 2483 | PyObject* item = match_getslice( |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2484 | self, PyTuple_GET_ITEM(args, i), Py_None |
| 2485 | ); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2486 | if (!item) { |
| 2487 | Py_DECREF(result); |
| 2488 | return NULL; |
| 2489 | } |
| 2490 | PyTuple_SET_ITEM(result, i, item); |
| 2491 | } |
| 2492 | break; |
| 2493 | } |
| 2494 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2495 | } |
| 2496 | |
| 2497 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2498 | match_groups(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2499 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2500 | PyObject* result; |
| 2501 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2502 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2503 | PyObject* def = Py_None; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2504 | static char* kwlist[] = { "default", NULL }; |
| 2505 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groups", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2506 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2507 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2508 | result = PyTuple_New(self->groups-1); |
| 2509 | if (!result) |
| 2510 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2511 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2512 | for (index = 1; index < self->groups; index++) { |
| 2513 | PyObject* item; |
| 2514 | item = match_getslice_by_index(self, index, def); |
| 2515 | if (!item) { |
| 2516 | Py_DECREF(result); |
| 2517 | return NULL; |
| 2518 | } |
| 2519 | PyTuple_SET_ITEM(result, index-1, item); |
| 2520 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2521 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2522 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2523 | } |
| 2524 | |
| 2525 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2526 | match_groupdict(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2527 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2528 | PyObject* result; |
| 2529 | PyObject* keys; |
| 2530 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2531 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2532 | PyObject* def = Py_None; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2533 | static char* kwlist[] = { "default", NULL }; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2534 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groupdict", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2535 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2536 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2537 | result = PyDict_New(); |
| 2538 | if (!result || !self->pattern->groupindex) |
| 2539 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2540 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2541 | keys = PyMapping_Keys(self->pattern->groupindex); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2542 | if (!keys) |
| 2543 | goto failed; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2544 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2545 | for (index = 0; index < PyList_GET_SIZE(keys); index++) { |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2546 | int status; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2547 | PyObject* key; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2548 | PyObject* value; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2549 | key = PyList_GET_ITEM(keys, index); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2550 | if (!key) |
| 2551 | goto failed; |
| 2552 | value = match_getslice(self, key, def); |
| 2553 | if (!value) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2554 | Py_DECREF(key); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2555 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2556 | } |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2557 | status = PyDict_SetItem(result, key, value); |
| 2558 | Py_DECREF(value); |
| 2559 | if (status < 0) |
| 2560 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 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 | Py_DECREF(keys); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2564 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2565 | return result; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2566 | |
| 2567 | failed: |
| 2568 | Py_DECREF(keys); |
| 2569 | Py_DECREF(result); |
| 2570 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2571 | } |
| 2572 | |
| 2573 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2574 | match_start(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2575 | { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2576 | int index; |
| 2577 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2578 | PyObject* index_ = Py_False; /* zero */ |
| 2579 | if (!PyArg_ParseTuple(args, "|O:start", &index_)) |
| 2580 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2581 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2582 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2583 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2584 | if (index < 0 || index >= self->groups) { |
| 2585 | PyErr_SetString( |
| 2586 | PyExc_IndexError, |
| 2587 | "no such group" |
| 2588 | ); |
| 2589 | return NULL; |
| 2590 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2591 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2592 | /* mark is -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2593 | return Py_BuildValue("i", self->mark[index*2]); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2594 | } |
| 2595 | |
| 2596 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2597 | match_end(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2598 | { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2599 | int index; |
| 2600 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2601 | PyObject* index_ = Py_False; /* zero */ |
| 2602 | if (!PyArg_ParseTuple(args, "|O:end", &index_)) |
| 2603 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2604 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2605 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2606 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2607 | if (index < 0 || index >= self->groups) { |
| 2608 | PyErr_SetString( |
| 2609 | PyExc_IndexError, |
| 2610 | "no such group" |
| 2611 | ); |
| 2612 | return NULL; |
| 2613 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2614 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2615 | /* mark is -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2616 | return Py_BuildValue("i", self->mark[index*2+1]); |
| 2617 | } |
| 2618 | |
| 2619 | LOCAL(PyObject*) |
| 2620 | _pair(int i1, int i2) |
| 2621 | { |
| 2622 | PyObject* pair; |
| 2623 | PyObject* item; |
| 2624 | |
| 2625 | pair = PyTuple_New(2); |
| 2626 | if (!pair) |
| 2627 | return NULL; |
| 2628 | |
| 2629 | item = PyInt_FromLong(i1); |
| 2630 | if (!item) |
| 2631 | goto error; |
| 2632 | PyTuple_SET_ITEM(pair, 0, item); |
| 2633 | |
| 2634 | item = PyInt_FromLong(i2); |
| 2635 | if (!item) |
| 2636 | goto error; |
| 2637 | PyTuple_SET_ITEM(pair, 1, item); |
| 2638 | |
| 2639 | return pair; |
| 2640 | |
| 2641 | error: |
| 2642 | Py_DECREF(pair); |
| 2643 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2644 | } |
| 2645 | |
| 2646 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2647 | match_span(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2648 | { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2649 | int index; |
| 2650 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2651 | PyObject* index_ = Py_False; /* zero */ |
| 2652 | if (!PyArg_ParseTuple(args, "|O:span", &index_)) |
| 2653 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2654 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2655 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2656 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2657 | if (index < 0 || index >= self->groups) { |
| 2658 | PyErr_SetString( |
| 2659 | PyExc_IndexError, |
| 2660 | "no such group" |
| 2661 | ); |
| 2662 | return NULL; |
| 2663 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2664 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2665 | /* marks are -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2666 | return _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2667 | } |
| 2668 | |
| 2669 | static PyObject* |
| 2670 | match_regs(MatchObject* self) |
| 2671 | { |
| 2672 | PyObject* regs; |
| 2673 | PyObject* item; |
| 2674 | int index; |
| 2675 | |
| 2676 | regs = PyTuple_New(self->groups); |
| 2677 | if (!regs) |
| 2678 | return NULL; |
| 2679 | |
| 2680 | for (index = 0; index < self->groups; index++) { |
| 2681 | item = _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2682 | if (!item) { |
| 2683 | Py_DECREF(regs); |
| 2684 | return NULL; |
| 2685 | } |
| 2686 | PyTuple_SET_ITEM(regs, index, item); |
| 2687 | } |
| 2688 | |
| 2689 | Py_INCREF(regs); |
| 2690 | self->regs = regs; |
| 2691 | |
| 2692 | return regs; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2693 | } |
| 2694 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2695 | static PyObject* |
| 2696 | match_copy(MatchObject* self, PyObject* args) |
| 2697 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2698 | #ifdef USE_BUILTIN_COPY |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2699 | MatchObject* copy; |
| 2700 | int slots, offset; |
| 2701 | |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2702 | if (args != Py_None && !PyArg_ParseTuple(args, ":__copy__")) |
| 2703 | return NULL; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2704 | |
| 2705 | slots = 2 * (self->pattern->groups+1); |
| 2706 | |
| 2707 | copy = PyObject_NEW_VAR(MatchObject, &Match_Type, slots); |
| 2708 | if (!copy) |
| 2709 | return NULL; |
| 2710 | |
| 2711 | /* this value a constant, but any compiler should be able to |
| 2712 | figure that out all by itself */ |
| 2713 | offset = offsetof(MatchObject, string); |
| 2714 | |
| 2715 | Py_XINCREF(self->pattern); |
| 2716 | Py_XINCREF(self->string); |
| 2717 | Py_XINCREF(self->regs); |
| 2718 | |
| 2719 | memcpy((char*) copy + offset, (char*) self + offset, |
| 2720 | sizeof(MatchObject) + slots * sizeof(int) - offset); |
| 2721 | |
| 2722 | return (PyObject*) copy; |
| 2723 | #else |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2724 | PyErr_SetString(PyExc_TypeError, "cannot copy this match object"); |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2725 | return NULL; |
| 2726 | #endif |
| 2727 | } |
| 2728 | |
| 2729 | static PyObject* |
| 2730 | match_deepcopy(MatchObject* self, PyObject* args) |
| 2731 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2732 | #ifdef USE_BUILTIN_COPY |
| 2733 | MatchObject* copy; |
| 2734 | |
| 2735 | PyObject* memo; |
| 2736 | if (!PyArg_ParseTuple(args, "O:__deepcopy__", &memo)) |
| 2737 | return NULL; |
| 2738 | |
| 2739 | copy = (MatchObject*) match_copy(self, Py_None); |
| 2740 | if (!copy) |
| 2741 | return NULL; |
| 2742 | |
| 2743 | if (!deepcopy((PyObject**) ©->pattern, memo) || |
| 2744 | !deepcopy(©->string, memo) || |
| 2745 | !deepcopy(©->regs, memo)) { |
| 2746 | Py_DECREF(copy); |
| 2747 | return NULL; |
| 2748 | } |
| 2749 | |
| 2750 | #else |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2751 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this match object"); |
| 2752 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2753 | #endif |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2754 | } |
| 2755 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2756 | static PyMethodDef match_methods[] = { |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2757 | {"group", (PyCFunction) match_group, METH_VARARGS}, |
| 2758 | {"start", (PyCFunction) match_start, METH_VARARGS}, |
| 2759 | {"end", (PyCFunction) match_end, METH_VARARGS}, |
| 2760 | {"span", (PyCFunction) match_span, METH_VARARGS}, |
| 2761 | {"groups", (PyCFunction) match_groups, METH_VARARGS|METH_KEYWORDS}, |
| 2762 | {"groupdict", (PyCFunction) match_groupdict, METH_VARARGS|METH_KEYWORDS}, |
| 2763 | {"expand", (PyCFunction) match_expand, METH_VARARGS}, |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2764 | {"__copy__", (PyCFunction) match_copy, METH_VARARGS}, |
| 2765 | {"__deepcopy__", (PyCFunction) match_deepcopy, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2766 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2767 | }; |
| 2768 | |
| 2769 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2770 | match_getattr(MatchObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2771 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2772 | PyObject* res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2773 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2774 | res = Py_FindMethod(match_methods, (PyObject*) self, name); |
| 2775 | if (res) |
| 2776 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2777 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2778 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2779 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2780 | if (!strcmp(name, "lastindex")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2781 | if (self->lastindex >= 0) |
| 2782 | return Py_BuildValue("i", self->lastindex); |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2783 | Py_INCREF(Py_None); |
| 2784 | return Py_None; |
| 2785 | } |
| 2786 | |
| 2787 | if (!strcmp(name, "lastgroup")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2788 | if (self->pattern->indexgroup && self->lastindex >= 0) { |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2789 | PyObject* result = PySequence_GetItem( |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2790 | self->pattern->indexgroup, self->lastindex |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2791 | ); |
| 2792 | if (result) |
| 2793 | return result; |
| 2794 | PyErr_Clear(); |
| 2795 | } |
| 2796 | Py_INCREF(Py_None); |
| 2797 | return Py_None; |
| 2798 | } |
| 2799 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2800 | if (!strcmp(name, "string")) { |
| 2801 | if (self->string) { |
| 2802 | Py_INCREF(self->string); |
| 2803 | return self->string; |
| 2804 | } else { |
| 2805 | Py_INCREF(Py_None); |
| 2806 | return Py_None; |
| 2807 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2808 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2809 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2810 | if (!strcmp(name, "regs")) { |
| 2811 | if (self->regs) { |
| 2812 | Py_INCREF(self->regs); |
| 2813 | return self->regs; |
| 2814 | } else |
| 2815 | return match_regs(self); |
| 2816 | } |
| 2817 | |
| 2818 | if (!strcmp(name, "re")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2819 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2820 | return (PyObject*) self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2821 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2822 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2823 | if (!strcmp(name, "pos")) |
| 2824 | return Py_BuildValue("i", self->pos); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2825 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2826 | if (!strcmp(name, "endpos")) |
| 2827 | return Py_BuildValue("i", self->endpos); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2828 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2829 | PyErr_SetString(PyExc_AttributeError, name); |
| 2830 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2831 | } |
| 2832 | |
| 2833 | /* FIXME: implement setattr("string", None) as a special case (to |
| 2834 | detach the associated string, if any */ |
| 2835 | |
| 2836 | statichere PyTypeObject Match_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2837 | PyObject_HEAD_INIT(NULL) |
| 2838 | 0, "SRE_Match", |
| 2839 | sizeof(MatchObject), sizeof(int), |
| 2840 | (destructor)match_dealloc, /*tp_dealloc*/ |
| 2841 | 0, /*tp_print*/ |
| 2842 | (getattrfunc)match_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2843 | }; |
| 2844 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2845 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2846 | /* scanner methods (experimental) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2847 | |
| 2848 | static void |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2849 | scanner_dealloc(ScannerObject* self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2850 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2851 | state_fini(&self->state); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2852 | Py_DECREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2853 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2854 | } |
| 2855 | |
| 2856 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2857 | scanner_match(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2858 | { |
| 2859 | SRE_STATE* state = &self->state; |
| 2860 | PyObject* match; |
| 2861 | int status; |
| 2862 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2863 | state_reset(state); |
| 2864 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2865 | state->ptr = state->start; |
| 2866 | |
| 2867 | if (state->charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 2868 | status = sre_match(state, PatternObject_GetCode(self->pattern), 1); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2869 | } else { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2870 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 2871 | status = sre_umatch(state, PatternObject_GetCode(self->pattern), 1); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2872 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2873 | } |
| 2874 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2875 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2876 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2877 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2878 | if (status == 0 || state->ptr == state->start) |
| 2879 | state->start = (void*) ((char*) state->ptr + state->charsize); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2880 | else |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2881 | state->start = state->ptr; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2882 | |
| 2883 | return match; |
| 2884 | } |
| 2885 | |
| 2886 | |
| 2887 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2888 | scanner_search(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2889 | { |
| 2890 | SRE_STATE* state = &self->state; |
| 2891 | PyObject* match; |
| 2892 | int status; |
| 2893 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2894 | state_reset(state); |
| 2895 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2896 | state->ptr = state->start; |
| 2897 | |
| 2898 | if (state->charsize == 1) { |
| 2899 | status = sre_search(state, PatternObject_GetCode(self->pattern)); |
| 2900 | } else { |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2901 | #if defined(HAVE_UNICODE) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2902 | status = sre_usearch(state, PatternObject_GetCode(self->pattern)); |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2903 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2904 | } |
| 2905 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2906 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2907 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2908 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2909 | if (status == 0 || state->ptr == state->start) |
| 2910 | state->start = (void*) ((char*) state->ptr + state->charsize); |
| 2911 | else |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2912 | state->start = state->ptr; |
| 2913 | |
| 2914 | return match; |
| 2915 | } |
| 2916 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2917 | static PyMethodDef scanner_methods[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2918 | {"match", (PyCFunction) scanner_match, 0}, |
| 2919 | {"search", (PyCFunction) scanner_search, 0}, |
| 2920 | {NULL, NULL} |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2921 | }; |
| 2922 | |
| 2923 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2924 | scanner_getattr(ScannerObject* self, char* name) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2925 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2926 | PyObject* res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2927 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2928 | res = Py_FindMethod(scanner_methods, (PyObject*) self, name); |
| 2929 | if (res) |
| 2930 | return res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2931 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2932 | PyErr_Clear(); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2933 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2934 | /* attributes */ |
| 2935 | if (!strcmp(name, "pattern")) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2936 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2937 | return self->pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2938 | } |
| 2939 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2940 | PyErr_SetString(PyExc_AttributeError, name); |
| 2941 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2942 | } |
| 2943 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2944 | statichere PyTypeObject Scanner_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2945 | PyObject_HEAD_INIT(NULL) |
| 2946 | 0, "SRE_Scanner", |
| 2947 | sizeof(ScannerObject), 0, |
| 2948 | (destructor)scanner_dealloc, /*tp_dealloc*/ |
| 2949 | 0, /*tp_print*/ |
| 2950 | (getattrfunc)scanner_getattr, /*tp_getattr*/ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2951 | }; |
| 2952 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2953 | static PyMethodDef _functions[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2954 | {"compile", _compile, 1}, |
| 2955 | {"getcodesize", sre_codesize, 1}, |
| 2956 | {"getlower", sre_getlower, 1}, |
| 2957 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2958 | }; |
| 2959 | |
Tim Peters | 5687ffe | 2001-02-28 16:44:18 +0000 | [diff] [blame] | 2960 | DL_EXPORT(void) |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 2961 | init_sre(void) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2962 | { |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2963 | PyObject* m; |
| 2964 | PyObject* d; |
Barry Warsaw | 214a0b13 | 2001-08-16 20:33:48 +0000 | [diff] [blame] | 2965 | PyObject* x; |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2966 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2967 | /* Patch object types */ |
| 2968 | Pattern_Type.ob_type = Match_Type.ob_type = |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2969 | Scanner_Type.ob_type = &PyType_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2970 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 2971 | m = Py_InitModule("_" SRE_MODULE, _functions); |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2972 | d = PyModule_GetDict(m); |
| 2973 | |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 2974 | x = PyInt_FromLong(SRE_MAGIC); |
| 2975 | if (x) { |
| 2976 | PyDict_SetItemString(d, "MAGIC", x); |
| 2977 | Py_DECREF(x); |
| 2978 | } |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 2979 | |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 2980 | x = PyString_FromString(copyright); |
| 2981 | if (x) { |
| 2982 | PyDict_SetItemString(d, "copyright", x); |
| 2983 | Py_DECREF(x); |
| 2984 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2985 | } |
| 2986 | |
Fredrik Lundh | 436c3d5 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2987 | #endif /* !defined(SRE_RECURSIVE) */ |