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 |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 33 | * |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 34 | * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 35 | * |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 36 | * This version of the SRE library can be redistributed under CNRI's |
| 37 | * Python 1.6 license. For any other use, please contact Secret Labs |
| 38 | * AB (info@pythonware.com). |
| 39 | * |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 40 | * Portions of this engine have been developed in cooperation with |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 41 | * CNRI. Hewlett-Packard provided funding for 1.6 integration and |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 42 | * other compatibility work. |
| 43 | */ |
| 44 | |
| 45 | #ifndef SRE_RECURSIVE |
| 46 | |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 47 | static char copyright[] = |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 48 | " SRE 2.1.1 Copyright (c) 1997-2001 by Secret Labs AB "; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 49 | |
| 50 | #include "Python.h" |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 51 | #include "structmember.h" /* offsetof */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 52 | |
| 53 | #include "sre.h" |
| 54 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 55 | #include <ctype.h> |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 56 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 57 | /* name of this module, minus the leading underscore */ |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 58 | #if !defined(SRE_MODULE) |
| 59 | #define SRE_MODULE "sre" |
| 60 | #endif |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 61 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 62 | /* defining this one enables tracing */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 63 | #undef VERBOSE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 64 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 65 | #if PY_VERSION_HEX >= 0x01060000 |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 66 | /* defining this enables unicode support (default under 1.6a1 and later) */ |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 67 | #define HAVE_UNICODE |
| 68 | #endif |
| 69 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 70 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 71 | /* optional features */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 72 | |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 73 | /* prevent run-away recursion (bad patterns on long strings) */ |
| 74 | |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 75 | #if !defined(USE_STACKCHECK) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 76 | #if defined(MS_WIN64) || defined(__LP64__) || defined(_LP64) |
| 77 | /* require smaller recursion limit for a number of 64-bit platforms: |
| 78 | Win64 (MS_WIN64), Linux64 (__LP64__), Monterey (64-bit AIX) (_LP64) */ |
| 79 | /* FIXME: maybe the limit should be 40000 / sizeof(void*) ? */ |
| 80 | #define USE_RECURSION_LIMIT 7500 |
| 81 | #else |
| 82 | #define USE_RECURSION_LIMIT 10000 |
| 83 | #endif |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 84 | #endif |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 85 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 86 | /* enables fast searching */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 87 | #define USE_FAST_SEARCH |
| 88 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 89 | /* enables aggressive inlining (always on for Visual C) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 90 | #undef USE_INLINE |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 91 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 92 | /* enables copy/deepcopy handling (work in progress) */ |
| 93 | #undef USE_BUILTIN_COPY |
| 94 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 95 | #if PY_VERSION_HEX < 0x01060000 |
| 96 | #define PyObject_DEL(op) PyMem_DEL((op)) |
| 97 | #endif |
| 98 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 99 | /* -------------------------------------------------------------------- */ |
| 100 | |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 101 | #if defined(_MSC_VER) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 102 | #pragma optimize("agtw", on) /* doesn't seem to make much difference... */ |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 103 | #pragma warning(disable: 4710) /* who cares if functions are not inlined ;-) */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 104 | /* fastest possible local call under MSVC */ |
| 105 | #define LOCAL(type) static __inline type __fastcall |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 106 | #elif defined(USE_INLINE) |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 107 | #define LOCAL(type) static inline type |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 108 | #else |
| 109 | #define LOCAL(type) static type |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 110 | #endif |
| 111 | |
| 112 | /* error codes */ |
| 113 | #define SRE_ERROR_ILLEGAL -1 /* illegal opcode */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 114 | #define SRE_ERROR_STATE -2 /* illegal state */ |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 115 | #define SRE_ERROR_RECURSION_LIMIT -3 /* runaway recursion */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 116 | #define SRE_ERROR_MEMORY -9 /* out of memory */ |
| 117 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 118 | #if defined(VERBOSE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 119 | #define TRACE(v) printf v |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 120 | #else |
| 121 | #define TRACE(v) |
| 122 | #endif |
| 123 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 124 | /* -------------------------------------------------------------------- */ |
| 125 | /* search engine state */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 126 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 127 | /* default character predicates (run sre_chars.py to regenerate tables) */ |
| 128 | |
| 129 | #define SRE_DIGIT_MASK 1 |
| 130 | #define SRE_SPACE_MASK 2 |
| 131 | #define SRE_LINEBREAK_MASK 4 |
| 132 | #define SRE_ALNUM_MASK 8 |
| 133 | #define SRE_WORD_MASK 16 |
| 134 | |
| 135 | static char sre_char_info[128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 2, |
| 136 | 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, |
| 137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, |
| 138 | 25, 25, 0, 0, 0, 0, 0, 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 139 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, |
| 140 | 0, 0, 16, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 141 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0 }; |
| 142 | |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 143 | static char sre_char_lower[128] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 144 | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, |
| 145 | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, |
| 146 | 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, |
| 147 | 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, |
| 148 | 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, |
| 149 | 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, |
| 150 | 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, |
| 151 | 120, 121, 122, 123, 124, 125, 126, 127 }; |
| 152 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 153 | #define SRE_IS_DIGIT(ch)\ |
| 154 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_DIGIT_MASK) : 0) |
| 155 | #define SRE_IS_SPACE(ch)\ |
| 156 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_SPACE_MASK) : 0) |
| 157 | #define SRE_IS_LINEBREAK(ch)\ |
| 158 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_LINEBREAK_MASK) : 0) |
| 159 | #define SRE_IS_ALNUM(ch)\ |
| 160 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_ALNUM_MASK) : 0) |
| 161 | #define SRE_IS_WORD(ch)\ |
| 162 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_WORD_MASK) : 0) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 163 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 164 | static unsigned int sre_lower(unsigned int ch) |
| 165 | { |
| 166 | return ((ch) < 128 ? sre_char_lower[ch] : ch); |
| 167 | } |
| 168 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 169 | /* locale-specific character predicates */ |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 170 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 171 | #define SRE_LOC_IS_DIGIT(ch) ((ch) < 256 ? isdigit((ch)) : 0) |
| 172 | #define SRE_LOC_IS_SPACE(ch) ((ch) < 256 ? isspace((ch)) : 0) |
| 173 | #define SRE_LOC_IS_LINEBREAK(ch) ((ch) == '\n') |
| 174 | #define SRE_LOC_IS_ALNUM(ch) ((ch) < 256 ? isalnum((ch)) : 0) |
| 175 | #define SRE_LOC_IS_WORD(ch) (SRE_LOC_IS_ALNUM((ch)) || (ch) == '_') |
| 176 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 177 | static unsigned int sre_lower_locale(unsigned int ch) |
| 178 | { |
| 179 | return ((ch) < 256 ? tolower((ch)) : ch); |
| 180 | } |
| 181 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 182 | /* unicode-specific character predicates */ |
| 183 | |
| 184 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 185 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 186 | #define SRE_UNI_IS_DIGIT(ch) Py_UNICODE_ISDIGIT((Py_UNICODE)(ch)) |
| 187 | #define SRE_UNI_IS_SPACE(ch) Py_UNICODE_ISSPACE((Py_UNICODE)(ch)) |
| 188 | #define SRE_UNI_IS_LINEBREAK(ch) Py_UNICODE_ISLINEBREAK((Py_UNICODE)(ch)) |
Fredrik Lundh | 22d2546 | 2000-07-01 17:50:59 +0000 | [diff] [blame] | 189 | #define SRE_UNI_IS_ALNUM(ch) Py_UNICODE_ISALNUM((Py_UNICODE)(ch)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 190 | #define SRE_UNI_IS_WORD(ch) (SRE_UNI_IS_ALNUM((ch)) || (ch) == '_') |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 191 | |
| 192 | static unsigned int sre_lower_unicode(unsigned int ch) |
| 193 | { |
| 194 | return (unsigned int) Py_UNICODE_TOLOWER((Py_UNICODE)(ch)); |
| 195 | } |
| 196 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 197 | #endif |
| 198 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 199 | LOCAL(int) |
| 200 | sre_category(SRE_CODE category, unsigned int ch) |
| 201 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 202 | switch (category) { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 203 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 204 | case SRE_CATEGORY_DIGIT: |
| 205 | return SRE_IS_DIGIT(ch); |
| 206 | case SRE_CATEGORY_NOT_DIGIT: |
| 207 | return !SRE_IS_DIGIT(ch); |
| 208 | case SRE_CATEGORY_SPACE: |
| 209 | return SRE_IS_SPACE(ch); |
| 210 | case SRE_CATEGORY_NOT_SPACE: |
| 211 | return !SRE_IS_SPACE(ch); |
| 212 | case SRE_CATEGORY_WORD: |
| 213 | return SRE_IS_WORD(ch); |
| 214 | case SRE_CATEGORY_NOT_WORD: |
| 215 | return !SRE_IS_WORD(ch); |
| 216 | case SRE_CATEGORY_LINEBREAK: |
| 217 | return SRE_IS_LINEBREAK(ch); |
| 218 | case SRE_CATEGORY_NOT_LINEBREAK: |
| 219 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 220 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 221 | case SRE_CATEGORY_LOC_WORD: |
| 222 | return SRE_LOC_IS_WORD(ch); |
| 223 | case SRE_CATEGORY_LOC_NOT_WORD: |
| 224 | return !SRE_LOC_IS_WORD(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 225 | |
| 226 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 227 | case SRE_CATEGORY_UNI_DIGIT: |
| 228 | return SRE_UNI_IS_DIGIT(ch); |
| 229 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 230 | return !SRE_UNI_IS_DIGIT(ch); |
| 231 | case SRE_CATEGORY_UNI_SPACE: |
| 232 | return SRE_UNI_IS_SPACE(ch); |
| 233 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 234 | return !SRE_UNI_IS_SPACE(ch); |
| 235 | case SRE_CATEGORY_UNI_WORD: |
| 236 | return SRE_UNI_IS_WORD(ch); |
| 237 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 238 | return !SRE_UNI_IS_WORD(ch); |
| 239 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 240 | return SRE_UNI_IS_LINEBREAK(ch); |
| 241 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 242 | return !SRE_UNI_IS_LINEBREAK(ch); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 243 | #else |
| 244 | case SRE_CATEGORY_UNI_DIGIT: |
| 245 | return SRE_IS_DIGIT(ch); |
| 246 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 247 | return !SRE_IS_DIGIT(ch); |
| 248 | case SRE_CATEGORY_UNI_SPACE: |
| 249 | return SRE_IS_SPACE(ch); |
| 250 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 251 | return !SRE_IS_SPACE(ch); |
| 252 | case SRE_CATEGORY_UNI_WORD: |
| 253 | return SRE_LOC_IS_WORD(ch); |
| 254 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 255 | return !SRE_LOC_IS_WORD(ch); |
| 256 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 257 | return SRE_IS_LINEBREAK(ch); |
| 258 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 259 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 260 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 261 | } |
| 262 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 263 | } |
| 264 | |
| 265 | /* helpers */ |
| 266 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 267 | static void |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 268 | mark_fini(SRE_STATE* state) |
| 269 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 270 | if (state->mark_stack) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 271 | free(state->mark_stack); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 272 | state->mark_stack = NULL; |
| 273 | } |
| 274 | state->mark_stack_size = state->mark_stack_base = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | static int |
| 278 | mark_save(SRE_STATE* state, int lo, int hi) |
| 279 | { |
| 280 | void* stack; |
| 281 | int size; |
| 282 | int minsize, newsize; |
| 283 | |
| 284 | if (hi <= lo) |
| 285 | return 0; |
| 286 | |
| 287 | size = (hi - lo) + 1; |
| 288 | |
| 289 | newsize = state->mark_stack_size; |
| 290 | minsize = state->mark_stack_base + size; |
| 291 | |
| 292 | if (newsize < minsize) { |
| 293 | /* create new stack */ |
| 294 | if (!newsize) { |
| 295 | newsize = 512; |
| 296 | if (newsize < minsize) |
| 297 | newsize = minsize; |
| 298 | TRACE(("allocate stack %d\n", newsize)); |
| 299 | stack = malloc(sizeof(void*) * newsize); |
| 300 | } else { |
| 301 | /* grow the stack */ |
| 302 | while (newsize < minsize) |
| 303 | newsize += newsize; |
| 304 | TRACE(("grow stack to %d\n", newsize)); |
| 305 | stack = realloc(state->mark_stack, sizeof(void*) * newsize); |
| 306 | } |
| 307 | if (!stack) { |
| 308 | mark_fini(state); |
| 309 | return SRE_ERROR_MEMORY; |
| 310 | } |
| 311 | state->mark_stack = stack; |
| 312 | state->mark_stack_size = newsize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 313 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 314 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 315 | 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] | 316 | |
| 317 | memcpy(state->mark_stack + state->mark_stack_base, state->mark + lo, |
| 318 | size * sizeof(void*)); |
| 319 | |
| 320 | state->mark_stack_base += size; |
| 321 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 322 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 323 | } |
| 324 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 325 | static int |
| 326 | mark_restore(SRE_STATE* state, int lo, int hi) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 327 | { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 328 | int size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 329 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 330 | if (hi <= lo) |
| 331 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 332 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 333 | size = (hi - lo) + 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 334 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 335 | state->mark_stack_base -= size; |
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 | 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] | 338 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 339 | memcpy(state->mark + lo, state->mark_stack + state->mark_stack_base, |
| 340 | size * sizeof(void*)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 341 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 342 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 343 | } |
| 344 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 345 | /* generate 8-bit version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 346 | |
| 347 | #define SRE_CHAR unsigned char |
| 348 | #define SRE_AT sre_at |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 349 | #define SRE_COUNT sre_count |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 350 | #define SRE_CHARSET sre_charset |
| 351 | #define SRE_INFO sre_info |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 352 | #define SRE_MATCH sre_match |
| 353 | #define SRE_SEARCH sre_search |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 354 | |
| 355 | #if defined(HAVE_UNICODE) |
| 356 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 357 | #define SRE_RECURSIVE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 358 | #include "_sre.c" |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 359 | #undef SRE_RECURSIVE |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 360 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 361 | #undef SRE_SEARCH |
| 362 | #undef SRE_MATCH |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 363 | #undef SRE_INFO |
| 364 | #undef SRE_CHARSET |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 365 | #undef SRE_COUNT |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 366 | #undef SRE_AT |
| 367 | #undef SRE_CHAR |
| 368 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 369 | /* generate 16-bit unicode version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 370 | |
| 371 | #define SRE_CHAR Py_UNICODE |
| 372 | #define SRE_AT sre_uat |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 373 | #define SRE_COUNT sre_ucount |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 374 | #define SRE_CHARSET sre_ucharset |
| 375 | #define SRE_INFO sre_uinfo |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 376 | #define SRE_MATCH sre_umatch |
| 377 | #define SRE_SEARCH sre_usearch |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 378 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 379 | |
| 380 | #endif /* SRE_RECURSIVE */ |
| 381 | |
| 382 | /* -------------------------------------------------------------------- */ |
| 383 | /* String matching engine */ |
| 384 | |
| 385 | /* the following section is compiled twice, with different character |
| 386 | settings */ |
| 387 | |
| 388 | LOCAL(int) |
| 389 | SRE_AT(SRE_STATE* state, SRE_CHAR* ptr, SRE_CODE at) |
| 390 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 391 | /* check if pointer is at given position */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 392 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 393 | int this, that; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 394 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 395 | switch (at) { |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 396 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 397 | case SRE_AT_BEGINNING: |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 398 | case SRE_AT_BEGINNING_STRING: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 399 | return ((void*) ptr == state->beginning); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 400 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 401 | case SRE_AT_BEGINNING_LINE: |
| 402 | return ((void*) ptr == state->beginning || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 403 | SRE_IS_LINEBREAK((int) ptr[-1])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 404 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 405 | case SRE_AT_END: |
Fredrik Lundh | ef34bd2 | 2000-06-30 21:40:20 +0000 | [diff] [blame] | 406 | return (((void*) (ptr+1) == state->end && |
| 407 | SRE_IS_LINEBREAK((int) ptr[0])) || |
| 408 | ((void*) ptr == state->end)); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 409 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 410 | case SRE_AT_END_LINE: |
| 411 | return ((void*) ptr == state->end || |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 412 | SRE_IS_LINEBREAK((int) ptr[0])); |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 413 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 414 | case SRE_AT_END_STRING: |
| 415 | return ((void*) ptr == state->end); |
| 416 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 417 | case SRE_AT_BOUNDARY: |
| 418 | if (state->beginning == state->end) |
| 419 | return 0; |
| 420 | that = ((void*) ptr > state->beginning) ? |
| 421 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 422 | this = ((void*) ptr < state->end) ? |
| 423 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 424 | return this != that; |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 425 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 426 | case SRE_AT_NON_BOUNDARY: |
| 427 | if (state->beginning == state->end) |
| 428 | return 0; |
| 429 | that = ((void*) ptr > state->beginning) ? |
| 430 | SRE_IS_WORD((int) ptr[-1]) : 0; |
| 431 | this = ((void*) ptr < state->end) ? |
| 432 | SRE_IS_WORD((int) ptr[0]) : 0; |
| 433 | return this == that; |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 434 | |
| 435 | case SRE_AT_LOC_BOUNDARY: |
| 436 | if (state->beginning == state->end) |
| 437 | return 0; |
| 438 | that = ((void*) ptr > state->beginning) ? |
| 439 | SRE_LOC_IS_WORD((int) ptr[-1]) : 0; |
| 440 | this = ((void*) ptr < state->end) ? |
| 441 | SRE_LOC_IS_WORD((int) ptr[0]) : 0; |
| 442 | return this != that; |
| 443 | |
| 444 | case SRE_AT_LOC_NON_BOUNDARY: |
| 445 | if (state->beginning == state->end) |
| 446 | return 0; |
| 447 | that = ((void*) ptr > state->beginning) ? |
| 448 | SRE_LOC_IS_WORD((int) ptr[-1]) : 0; |
| 449 | this = ((void*) ptr < state->end) ? |
| 450 | SRE_LOC_IS_WORD((int) ptr[0]) : 0; |
| 451 | return this == that; |
| 452 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 453 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 454 | case SRE_AT_UNI_BOUNDARY: |
| 455 | if (state->beginning == state->end) |
| 456 | return 0; |
| 457 | that = ((void*) ptr > state->beginning) ? |
| 458 | SRE_UNI_IS_WORD((int) ptr[-1]) : 0; |
| 459 | this = ((void*) ptr < state->end) ? |
| 460 | SRE_UNI_IS_WORD((int) ptr[0]) : 0; |
| 461 | return this != that; |
| 462 | |
| 463 | case SRE_AT_UNI_NON_BOUNDARY: |
| 464 | if (state->beginning == state->end) |
| 465 | return 0; |
| 466 | that = ((void*) ptr > state->beginning) ? |
| 467 | SRE_UNI_IS_WORD((int) ptr[-1]) : 0; |
| 468 | this = ((void*) ptr < state->end) ? |
| 469 | SRE_UNI_IS_WORD((int) ptr[0]) : 0; |
| 470 | return this == that; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 471 | #endif |
| 472 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 473 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 474 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 475 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | LOCAL(int) |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 479 | SRE_CHARSET(SRE_CODE* set, SRE_CODE ch) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 480 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 481 | /* check if character is a member of the given set */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 482 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 483 | int ok = 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 484 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 485 | for (;;) { |
| 486 | switch (*set++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 487 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 488 | case SRE_OP_LITERAL: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 489 | /* <LITERAL> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 490 | if (ch == set[0]) |
| 491 | return ok; |
| 492 | set++; |
| 493 | break; |
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 | case SRE_OP_RANGE: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 496 | /* <RANGE> <lower> <upper> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 497 | if (set[0] <= ch && ch <= set[1]) |
| 498 | return ok; |
| 499 | set += 2; |
| 500 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 501 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 502 | case SRE_OP_CHARSET: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 503 | /* <CHARSET> <bitmap> (16 bits per code word) */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 504 | if (ch < 256 && (set[ch >> 4] & (1 << (ch & 15)))) |
| 505 | return ok; |
| 506 | set += 16; |
| 507 | break; |
| 508 | |
Fredrik Lundh | 19af43d | 2001-07-02 16:58:38 +0000 | [diff] [blame^] | 509 | case SRE_OP_BIGCHARSET: |
| 510 | /* <BIGCHARSET> <blockcount> <256 blockindices> <blocks> */ |
| 511 | { |
| 512 | int count, block; |
| 513 | count = *(set++); |
| 514 | block = ((unsigned char*)set)[ch >> 8]; |
| 515 | set += 128; |
| 516 | if (set[block*16 + ((ch & 255)>>4)] & (1 << (ch & 15))) |
| 517 | return ok; |
| 518 | set += count*16; |
| 519 | break; |
| 520 | } |
| 521 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 522 | case SRE_OP_CATEGORY: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 523 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 524 | if (sre_category(set[0], (int) ch)) |
| 525 | return ok; |
| 526 | set += 1; |
| 527 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 528 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 529 | case SRE_OP_NEGATE: |
| 530 | ok = !ok; |
| 531 | break; |
| 532 | |
| 533 | case SRE_OP_FAILURE: |
| 534 | return !ok; |
| 535 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 536 | default: |
| 537 | /* internal error -- there's not much we can do about it |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 538 | here, so let's just pretend it didn't match... */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 539 | return 0; |
| 540 | } |
| 541 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 542 | } |
| 543 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 544 | LOCAL(int) SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level); |
| 545 | |
| 546 | LOCAL(int) |
| 547 | SRE_COUNT(SRE_STATE* state, SRE_CODE* pattern, int maxcount, int level) |
| 548 | { |
| 549 | SRE_CODE chr; |
| 550 | SRE_CHAR* ptr = state->ptr; |
| 551 | SRE_CHAR* end = state->end; |
| 552 | int i; |
| 553 | |
| 554 | /* adjust end */ |
| 555 | if (maxcount < end - ptr && maxcount != 65535) |
| 556 | end = ptr + maxcount; |
| 557 | |
| 558 | switch (pattern[0]) { |
| 559 | |
| 560 | case SRE_OP_ANY: |
| 561 | /* repeated dot wildcard. */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 562 | TRACE(("|%p|%p|COUNT ANY\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 563 | while (ptr < end && !SRE_IS_LINEBREAK(*ptr)) |
| 564 | ptr++; |
| 565 | break; |
| 566 | |
| 567 | case SRE_OP_ANY_ALL: |
| 568 | /* repeated dot wildcare. skip to the end of the target |
| 569 | string, and backtrack from there */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 570 | TRACE(("|%p|%p|COUNT ANY_ALL\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 571 | ptr = end; |
| 572 | break; |
| 573 | |
| 574 | case SRE_OP_LITERAL: |
| 575 | /* repeated literal */ |
| 576 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 577 | TRACE(("|%p|%p|COUNT LITERAL %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 578 | while (ptr < end && (SRE_CODE) *ptr == chr) |
| 579 | ptr++; |
| 580 | break; |
| 581 | |
| 582 | case SRE_OP_LITERAL_IGNORE: |
| 583 | /* repeated literal */ |
| 584 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 585 | TRACE(("|%p|%p|COUNT LITERAL_IGNORE %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 586 | while (ptr < end && (SRE_CODE) state->lower(*ptr) == chr) |
| 587 | ptr++; |
| 588 | break; |
| 589 | |
| 590 | case SRE_OP_NOT_LITERAL: |
| 591 | /* repeated non-literal */ |
| 592 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 593 | TRACE(("|%p|%p|COUNT NOT_LITERAL %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 594 | while (ptr < end && (SRE_CODE) *ptr != chr) |
| 595 | ptr++; |
| 596 | break; |
| 597 | |
| 598 | case SRE_OP_NOT_LITERAL_IGNORE: |
| 599 | /* repeated non-literal */ |
| 600 | chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 601 | TRACE(("|%p|%p|COUNT NOT_LITERAL_IGNORE %d\n", pattern, ptr, chr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 602 | while (ptr < end && (SRE_CODE) state->lower(*ptr) != chr) |
| 603 | ptr++; |
| 604 | break; |
| 605 | |
| 606 | case SRE_OP_IN: |
| 607 | /* repeated set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 608 | TRACE(("|%p|%p|COUNT IN\n", pattern, ptr)); |
| 609 | while (ptr < end && SRE_CHARSET(pattern + 2, *ptr)) |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 610 | ptr++; |
| 611 | break; |
| 612 | |
| 613 | default: |
| 614 | /* repeated single character pattern */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 615 | TRACE(("|%p|%p|COUNT SUBPATTERN\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 616 | while ((SRE_CHAR*) state->ptr < end) { |
| 617 | i = SRE_MATCH(state, pattern, level); |
| 618 | if (i < 0) |
| 619 | return i; |
| 620 | if (!i) |
| 621 | break; |
| 622 | } |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 623 | TRACE(("|%p|%p|COUNT %d\n", pattern, ptr, |
| 624 | (SRE_CHAR*) state->ptr - ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 625 | return (SRE_CHAR*) state->ptr - ptr; |
| 626 | } |
| 627 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 628 | 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] | 629 | return ptr - (SRE_CHAR*) state->ptr; |
| 630 | } |
| 631 | |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 632 | #if 0 /* not used in this release */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 633 | LOCAL(int) |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 634 | SRE_INFO(SRE_STATE* state, SRE_CODE* pattern) |
| 635 | { |
| 636 | /* check if an SRE_OP_INFO block matches at the current position. |
| 637 | returns the number of SRE_CODE objects to skip if successful, 0 |
| 638 | if no match */ |
| 639 | |
| 640 | SRE_CHAR* end = state->end; |
| 641 | SRE_CHAR* ptr = state->ptr; |
| 642 | int i; |
| 643 | |
| 644 | /* check minimal length */ |
| 645 | if (pattern[3] && (end - ptr) < pattern[3]) |
| 646 | return 0; |
| 647 | |
| 648 | /* check known prefix */ |
| 649 | if (pattern[2] & SRE_INFO_PREFIX && pattern[5] > 1) { |
| 650 | /* <length> <skip> <prefix data> <overlap data> */ |
| 651 | for (i = 0; i < pattern[5]; i++) |
| 652 | if ((SRE_CODE) ptr[i] != pattern[7 + i]) |
| 653 | return 0; |
| 654 | return pattern[0] + 2 * pattern[6]; |
| 655 | } |
| 656 | return pattern[0]; |
| 657 | } |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 658 | #endif |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 659 | |
| 660 | LOCAL(int) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 661 | SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 662 | { |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 663 | /* check if string matches the given pattern. returns <0 for |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 664 | error, 0 for failure, and 1 for success */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 665 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 666 | SRE_CHAR* end = state->end; |
| 667 | SRE_CHAR* ptr = state->ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 668 | int i, count; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 669 | SRE_REPEAT* rp; |
| 670 | int lastmark; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 671 | SRE_CODE chr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 672 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 673 | SRE_REPEAT rep; /* FIXME: <fl> allocate in STATE instead */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 674 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 675 | TRACE(("|%p|%p|ENTER %d\n", pattern, ptr, level)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 676 | |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 677 | #if defined(USE_STACKCHECK) |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 678 | if (level % 10 == 0 && PyOS_CheckStack()) |
Fredrik Lundh | 18c2aa2 | 2000-08-07 17:33:38 +0000 | [diff] [blame] | 679 | return SRE_ERROR_RECURSION_LIMIT; |
| 680 | #endif |
| 681 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 682 | #if defined(USE_RECURSION_LIMIT) |
| 683 | if (level > USE_RECURSION_LIMIT) |
| 684 | return SRE_ERROR_RECURSION_LIMIT; |
| 685 | #endif |
| 686 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 687 | if (pattern[0] == SRE_OP_INFO) { |
| 688 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 689 | /* <INFO> <1=skip> <2=flags> <3=min> ... */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 690 | if (pattern[3] && (end - ptr) < pattern[3]) { |
| 691 | TRACE(("reject (got %d chars, need %d)\n", |
| 692 | (end - ptr), pattern[3])); |
| 693 | return 0; |
| 694 | } |
| 695 | pattern += pattern[1] + 1; |
| 696 | } |
| 697 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 698 | for (;;) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 699 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 700 | switch (*pattern++) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 701 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 702 | case SRE_OP_FAILURE: |
| 703 | /* immediate failure */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 704 | TRACE(("|%p|%p|FAILURE\n", pattern, ptr)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 705 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 706 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 707 | case SRE_OP_SUCCESS: |
| 708 | /* end of pattern */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 709 | TRACE(("|%p|%p|SUCCESS\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 710 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 711 | return 1; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 712 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 713 | case SRE_OP_AT: |
| 714 | /* match at given position */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 715 | /* <AT> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 716 | TRACE(("|%p|%p|AT %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 717 | if (!SRE_AT(state, ptr, *pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 718 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 719 | pattern++; |
| 720 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 721 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 722 | case SRE_OP_CATEGORY: |
| 723 | /* match at given category */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 724 | /* <CATEGORY> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 725 | TRACE(("|%p|%p|CATEGORY %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 726 | if (ptr >= end || !sre_category(pattern[0], ptr[0])) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 727 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 728 | pattern++; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 729 | ptr++; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 730 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 731 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 732 | case SRE_OP_LITERAL: |
| 733 | /* match literal string */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 734 | /* <LITERAL> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 735 | TRACE(("|%p|%p|LITERAL %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 736 | if (ptr >= end || (SRE_CODE) ptr[0] != pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 737 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 738 | pattern++; |
| 739 | ptr++; |
| 740 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 741 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 742 | case SRE_OP_NOT_LITERAL: |
| 743 | /* match anything that is not literal character */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 744 | /* <NOT_LITERAL> <code> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 745 | TRACE(("|%p|%p|NOT_LITERAL %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 746 | if (ptr >= end || (SRE_CODE) ptr[0] == pattern[0]) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 747 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 748 | pattern++; |
| 749 | ptr++; |
| 750 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 751 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 752 | case SRE_OP_ANY: |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 753 | /* match anything (except a newline) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 754 | /* <ANY> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 755 | TRACE(("|%p|%p|ANY\n", pattern, ptr)); |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 756 | if (ptr >= end || SRE_IS_LINEBREAK(ptr[0])) |
| 757 | return 0; |
| 758 | ptr++; |
| 759 | break; |
| 760 | |
| 761 | case SRE_OP_ANY_ALL: |
| 762 | /* match anything */ |
| 763 | /* <ANY_ALL> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 764 | TRACE(("|%p|%p|ANY_ALL\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 765 | if (ptr >= end) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 766 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 767 | ptr++; |
| 768 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 769 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 770 | case SRE_OP_IN: |
| 771 | /* match set member (or non_member) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 772 | /* <IN> <skip> <set> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 773 | TRACE(("|%p|%p|IN\n", pattern, ptr)); |
| 774 | if (ptr >= end || !SRE_CHARSET(pattern + 1, *ptr)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 775 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 776 | pattern += pattern[0]; |
| 777 | ptr++; |
| 778 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 779 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 780 | case SRE_OP_GROUPREF: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 781 | /* match backreference */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 782 | TRACE(("|%p|%p|GROUPREF %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 783 | i = pattern[0]; |
| 784 | { |
| 785 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 786 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 787 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 788 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 789 | while (p < e) { |
| 790 | if (ptr >= end || *ptr != *p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 791 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 792 | p++; ptr++; |
| 793 | } |
| 794 | } |
| 795 | pattern++; |
| 796 | break; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 797 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 798 | case SRE_OP_GROUPREF_IGNORE: |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 799 | /* match backreference */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 800 | TRACE(("|%p|%p|GROUPREF_IGNORE %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 801 | i = pattern[0]; |
| 802 | { |
| 803 | SRE_CHAR* p = (SRE_CHAR*) state->mark[i+i]; |
| 804 | SRE_CHAR* e = (SRE_CHAR*) state->mark[i+i+1]; |
| 805 | if (!p || !e || e < p) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 806 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 807 | while (p < e) { |
| 808 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 809 | state->lower(*ptr) != state->lower(*p)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 810 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 811 | p++; ptr++; |
| 812 | } |
| 813 | } |
| 814 | pattern++; |
| 815 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 816 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 817 | case SRE_OP_LITERAL_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 818 | TRACE(("|%p|%p|LITERAL_IGNORE %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 819 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 820 | state->lower(*ptr) != state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 821 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 822 | pattern++; |
| 823 | ptr++; |
| 824 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 825 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 826 | case SRE_OP_NOT_LITERAL_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 827 | TRACE(("|%p|%p|NOT_LITERAL_IGNORE %d\n", pattern, ptr, *pattern)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 828 | if (ptr >= end || |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 829 | state->lower(*ptr) == state->lower(*pattern)) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 830 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 831 | pattern++; |
| 832 | ptr++; |
| 833 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 834 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 835 | case SRE_OP_IN_IGNORE: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 836 | TRACE(("|%p|%p|IN_IGNORE\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 837 | if (ptr >= end |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 838 | || !SRE_CHARSET(pattern + 1, (SRE_CODE) state->lower(*ptr))) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 839 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 840 | pattern += pattern[0]; |
| 841 | ptr++; |
| 842 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 843 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 844 | case SRE_OP_MARK: |
| 845 | /* set mark */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 846 | /* <MARK> <gid> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 847 | TRACE(("|%p|%p|MARK %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 848 | i = pattern[0]; |
| 849 | if (i & 1) |
| 850 | state->lastindex = i/2 + 1; |
| 851 | if (i > state->lastmark) |
| 852 | state->lastmark = i; |
| 853 | state->mark[i] = ptr; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 854 | pattern++; |
| 855 | break; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 856 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 857 | case SRE_OP_JUMP: |
| 858 | case SRE_OP_INFO: |
| 859 | /* jump forward */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 860 | /* <JUMP> <offset> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 861 | TRACE(("|%p|%p|JUMP %d\n", pattern, ptr, pattern[0])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 862 | pattern += pattern[0]; |
| 863 | break; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 864 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 865 | case SRE_OP_ASSERT: |
| 866 | /* assert subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 867 | /* <ASSERT> <skip> <back> <pattern> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 868 | TRACE(("|%p|%p|ASSERT %d\n", pattern, ptr, pattern[1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 869 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 870 | if (state->ptr < state->beginning) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 871 | return 0; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 872 | i = SRE_MATCH(state, pattern + 2, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 873 | if (i <= 0) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 874 | return i; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 875 | pattern += pattern[0]; |
| 876 | break; |
Fredrik Lundh | 43b3b49 | 2000-06-30 10:41:31 +0000 | [diff] [blame] | 877 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 878 | case SRE_OP_ASSERT_NOT: |
| 879 | /* assert not subpattern */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 880 | /* <ASSERT_NOT> <skip> <back> <pattern> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 881 | TRACE(("|%p|%p|ASSERT_NOT %d\n", pattern, ptr, pattern[1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 882 | state->ptr = ptr - pattern[1]; |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 883 | if (state->ptr >= state->beginning) { |
| 884 | i = SRE_MATCH(state, pattern + 2, level + 1); |
| 885 | if (i < 0) |
| 886 | return i; |
| 887 | if (i) |
| 888 | return 0; |
| 889 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 890 | pattern += pattern[0]; |
| 891 | break; |
| 892 | |
| 893 | case SRE_OP_BRANCH: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 894 | /* alternation */ |
| 895 | /* <BRANCH> <0=skip> code <JUMP> ... <NULL> */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 896 | TRACE(("|%p|%p|BRANCH\n", pattern, ptr)); |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 897 | lastmark = state->lastmark; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 898 | for (; pattern[0]; pattern += pattern[0]) { |
| 899 | if (pattern[1] == SRE_OP_LITERAL && |
| 900 | (ptr >= end || (SRE_CODE) *ptr != pattern[2])) |
| 901 | continue; |
| 902 | if (pattern[1] == SRE_OP_IN && |
| 903 | (ptr >= end || !SRE_CHARSET(pattern + 3, (SRE_CODE) *ptr))) |
| 904 | continue; |
| 905 | state->ptr = ptr; |
| 906 | i = SRE_MATCH(state, pattern + 1, level + 1); |
| 907 | if (i) |
| 908 | return i; |
| 909 | if (state->lastmark > lastmark) { |
| 910 | memset( |
| 911 | state->mark + lastmark + 1, 0, |
| 912 | (state->lastmark - lastmark) * sizeof(void*) |
| 913 | ); |
| 914 | state->lastmark = lastmark; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 915 | } |
| 916 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 917 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 918 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 919 | case SRE_OP_REPEAT_ONE: |
| 920 | /* match repeated sequence (maximizing regexp) */ |
| 921 | |
| 922 | /* this operator only works if the repeated item is |
| 923 | exactly one character wide, and we're not already |
| 924 | collecting backtracking points. for other cases, |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 925 | use the MAX_REPEAT operator */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 926 | |
| 927 | /* <REPEAT_ONE> <skip> <1=min> <2=max> item <SUCCESS> tail */ |
| 928 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 929 | TRACE(("|%p|%p|REPEAT_ONE %d %d\n", pattern, ptr, |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 930 | pattern[1], pattern[2])); |
| 931 | |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 932 | if (ptr + pattern[1] > end) |
| 933 | return 0; /* cannot match */ |
| 934 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 935 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 936 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 937 | count = SRE_COUNT(state, pattern + 3, pattern[2], level + 1); |
| 938 | if (count < 0) |
| 939 | return count; |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 940 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 941 | ptr += count; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 942 | |
| 943 | /* when we arrive here, count contains the number of |
| 944 | matches, and ptr points to the tail of the target |
| 945 | string. check if the rest of the pattern matches, |
| 946 | and backtrack if not. */ |
| 947 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 948 | if (count < (int) pattern[1]) |
| 949 | return 0; |
| 950 | |
| 951 | if (pattern[pattern[0]] == SRE_OP_SUCCESS) { |
| 952 | /* tail is empty. we're finished */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 953 | state->ptr = ptr; |
| 954 | return 1; |
| 955 | |
| 956 | } else if (pattern[pattern[0]] == SRE_OP_LITERAL) { |
| 957 | /* tail starts with a literal. skip positions where |
| 958 | the rest of the pattern cannot possibly match */ |
Fredrik Lundh | e186983 | 2000-08-01 22:47:49 +0000 | [diff] [blame] | 959 | chr = pattern[pattern[0]+1]; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 960 | for (;;) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 961 | while (count >= (int) pattern[1] && |
| 962 | (ptr >= end || *ptr != chr)) { |
| 963 | ptr--; |
| 964 | count--; |
| 965 | } |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 966 | if (count < (int) pattern[1]) |
| 967 | break; |
| 968 | state->ptr = ptr; |
| 969 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 970 | if (i) |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 971 | return i; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 972 | ptr--; |
| 973 | count--; |
| 974 | } |
| 975 | |
| 976 | } else { |
| 977 | /* general case */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 978 | lastmark = state->lastmark; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 979 | while (count >= (int) pattern[1]) { |
| 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--; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 986 | if (state->lastmark > lastmark) { |
| 987 | memset( |
| 988 | state->mark + lastmark + 1, 0, |
| 989 | (state->lastmark - lastmark) * sizeof(void*) |
| 990 | ); |
| 991 | state->lastmark = lastmark; |
| 992 | } |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 993 | } |
| 994 | } |
| 995 | return 0; |
| 996 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 997 | case SRE_OP_REPEAT: |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 998 | /* create repeat context. all the hard work is done |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 999 | by the UNTIL operator (MAX_UNTIL, MIN_UNTIL) */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1000 | /* <REPEAT> <skip> <1=min> <2=max> item <UNTIL> tail */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1001 | TRACE(("|%p|%p|REPEAT %d %d\n", pattern, ptr, |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1002 | pattern[1], pattern[2])); |
| 1003 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1004 | rep.count = -1; |
| 1005 | rep.pattern = pattern; |
| 1006 | |
| 1007 | /* install new repeat context */ |
| 1008 | rep.prev = state->repeat; |
| 1009 | state->repeat = &rep; |
| 1010 | |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1011 | state->ptr = ptr; |
| 1012 | i = SRE_MATCH(state, pattern + pattern[0], level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1013 | |
| 1014 | state->repeat = rep.prev; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1015 | |
| 1016 | return i; |
| 1017 | |
| 1018 | case SRE_OP_MAX_UNTIL: |
| 1019 | /* maximizing repeat */ |
| 1020 | /* <REPEAT> <skip> <1=min> <2=max> item <MAX_UNTIL> tail */ |
| 1021 | |
| 1022 | /* FIXME: we probably need to deal with zero-width |
| 1023 | matches in here... */ |
| 1024 | |
| 1025 | rp = state->repeat; |
| 1026 | if (!rp) |
| 1027 | return SRE_ERROR_STATE; |
| 1028 | |
| 1029 | state->ptr = ptr; |
| 1030 | |
| 1031 | count = rp->count + 1; |
| 1032 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1033 | TRACE(("|%p|%p|MAX_UNTIL %d\n", pattern, ptr, count)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1034 | |
| 1035 | if (count < rp->pattern[1]) { |
| 1036 | /* not enough matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1037 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1038 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1039 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1040 | if (i) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1041 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1042 | rp->count = count - 1; |
| 1043 | state->ptr = ptr; |
| 1044 | return 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1045 | } |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1046 | |
| 1047 | if (count < rp->pattern[2] || rp->pattern[2] == 65535) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1048 | /* we may have enough matches, but if we can |
| 1049 | match another item, do so */ |
| 1050 | rp->count = count; |
| 1051 | lastmark = state->lastmark; |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1052 | i = mark_save(state, 0, lastmark); |
| 1053 | if (i < 0) |
| 1054 | return i; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1055 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1056 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1057 | if (i) |
| 1058 | return i; |
Fredrik Lundh | 33accc1 | 2000-08-27 20:59:47 +0000 | [diff] [blame] | 1059 | i = mark_restore(state, 0, lastmark); |
| 1060 | if (i < 0) |
| 1061 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1062 | rp->count = count - 1; |
| 1063 | state->ptr = ptr; |
| 1064 | } |
| 1065 | |
| 1066 | /* cannot match more repeated items here. make sure the |
| 1067 | tail matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1068 | state->repeat = rp->prev; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1069 | i = SRE_MATCH(state, pattern, level + 1); |
| 1070 | if (i) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1071 | return i; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1072 | state->repeat = rp; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1073 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1074 | return 0; |
| 1075 | |
| 1076 | case SRE_OP_MIN_UNTIL: |
| 1077 | /* minimizing repeat */ |
| 1078 | /* <REPEAT> <skip> <1=min> <2=max> item <MIN_UNTIL> tail */ |
| 1079 | |
| 1080 | rp = state->repeat; |
| 1081 | if (!rp) |
| 1082 | return SRE_ERROR_STATE; |
| 1083 | |
| 1084 | count = rp->count + 1; |
| 1085 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1086 | TRACE(("|%p|%p|MIN_UNTIL %d %p\n", pattern, ptr, count, |
| 1087 | rp->pattern)); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1088 | |
| 1089 | state->ptr = ptr; |
| 1090 | |
| 1091 | if (count < rp->pattern[1]) { |
| 1092 | /* not enough matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1093 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1094 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1095 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1096 | if (i) |
| 1097 | return i; |
| 1098 | rp->count = count-1; |
| 1099 | state->ptr = ptr; |
| 1100 | return 0; |
| 1101 | } |
| 1102 | |
| 1103 | /* see if the tail matches */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1104 | state->repeat = rp->prev; |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 1105 | /* FIXME: the following fix doesn't always work (#133283) */ |
| 1106 | if (0 && rp->pattern[2] == 65535) { |
Fredrik Lundh | fa25a7d | 2001-01-14 23:55:55 +0000 | [diff] [blame] | 1107 | /* unbounded repeat */ |
| 1108 | for (;;) { |
| 1109 | i = SRE_MATCH(state, pattern, level + 1); |
| 1110 | if (i || ptr >= end) |
| 1111 | break; |
| 1112 | state->ptr = ++ptr; |
| 1113 | } |
| 1114 | } else |
| 1115 | i = SRE_MATCH(state, pattern, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1116 | if (i) { |
| 1117 | /* free(rp); */ |
| 1118 | return i; |
| 1119 | } |
Fredrik Lundh | fa25a7d | 2001-01-14 23:55:55 +0000 | [diff] [blame] | 1120 | |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1121 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1122 | state->repeat = rp; |
| 1123 | |
| 1124 | if (count >= rp->pattern[2] && rp->pattern[2] != 65535) |
| 1125 | return 0; |
| 1126 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1127 | rp->count = count; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1128 | /* RECURSIVE */ |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1129 | i = SRE_MATCH(state, rp->pattern + 3, level + 1); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1130 | if (i) |
| 1131 | return i; |
| 1132 | rp->count = count - 1; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1133 | state->ptr = ptr; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1134 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1135 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1136 | default: |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1137 | TRACE(("|%p|%p|UNKNOWN %d\n", pattern, ptr, pattern[-1])); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1138 | return SRE_ERROR_ILLEGAL; |
| 1139 | } |
| 1140 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1141 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1142 | /* shouldn't end up here */ |
| 1143 | return SRE_ERROR_ILLEGAL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1144 | } |
| 1145 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1146 | LOCAL(int) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1147 | SRE_SEARCH(SRE_STATE* state, SRE_CODE* pattern) |
| 1148 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1149 | SRE_CHAR* ptr = state->start; |
| 1150 | SRE_CHAR* end = state->end; |
| 1151 | int status = 0; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1152 | int prefix_len = 0; |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1153 | int prefix_skip = 0; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1154 | SRE_CODE* prefix = NULL; |
| 1155 | SRE_CODE* charset = NULL; |
| 1156 | SRE_CODE* overlap = NULL; |
| 1157 | int flags = 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1158 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1159 | if (pattern[0] == SRE_OP_INFO) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1160 | /* optimization info block */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1161 | /* <INFO> <1=skip> <2=flags> <3=min> <4=max> <5=prefix info> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1162 | |
| 1163 | flags = pattern[2]; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1164 | |
| 1165 | if (pattern[3] > 0) { |
| 1166 | /* adjust end point (but make sure we leave at least one |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1167 | character in there, so literal search will work) */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1168 | end -= pattern[3]-1; |
| 1169 | if (end <= ptr) |
| 1170 | end = ptr+1; |
| 1171 | } |
| 1172 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1173 | if (flags & SRE_INFO_PREFIX) { |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1174 | /* pattern starts with a known prefix */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1175 | /* <length> <skip> <prefix data> <overlap data> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1176 | prefix_len = pattern[5]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1177 | prefix_skip = pattern[6]; |
| 1178 | prefix = pattern + 7; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1179 | overlap = prefix + prefix_len - 1; |
| 1180 | } else if (flags & SRE_INFO_CHARSET) |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1181 | /* pattern starts with a character from a known set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1182 | /* <charset> */ |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1183 | charset = pattern + 5; |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1184 | |
| 1185 | pattern += 1 + pattern[1]; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1186 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1187 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1188 | TRACE(("prefix = %p %d %d\n", prefix, prefix_len, prefix_skip)); |
| 1189 | TRACE(("charset = %p\n", charset)); |
| 1190 | |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1191 | #if defined(USE_FAST_SEARCH) |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1192 | if (prefix_len > 1) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1193 | /* pattern starts with a known prefix. use the overlap |
| 1194 | table to skip forward as fast as we possibly can */ |
| 1195 | int i = 0; |
| 1196 | end = state->end; |
| 1197 | while (ptr < end) { |
| 1198 | for (;;) { |
Fredrik Lundh | 0640e11 | 2000-06-30 13:55:15 +0000 | [diff] [blame] | 1199 | if ((SRE_CODE) ptr[0] != prefix[i]) { |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1200 | if (!i) |
| 1201 | break; |
| 1202 | else |
| 1203 | i = overlap[i]; |
| 1204 | } else { |
| 1205 | if (++i == prefix_len) { |
| 1206 | /* found a potential match */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1207 | TRACE(("|%p|%p|SEARCH SCAN\n", pattern, ptr)); |
| 1208 | state->start = ptr + 1 - prefix_len; |
| 1209 | state->ptr = ptr + 1 - prefix_len + prefix_skip; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1210 | if (flags & SRE_INFO_LITERAL) |
| 1211 | return 1; /* we got all of it */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1212 | status = SRE_MATCH(state, pattern + 2*prefix_skip, 1); |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 1213 | if (status != 0) |
| 1214 | return status; |
| 1215 | /* close but no cigar -- try again */ |
| 1216 | i = overlap[i]; |
| 1217 | } |
| 1218 | break; |
| 1219 | } |
| 1220 | |
| 1221 | } |
| 1222 | ptr++; |
| 1223 | } |
| 1224 | return 0; |
| 1225 | } |
| 1226 | #endif |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 1227 | |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1228 | if (pattern[0] == SRE_OP_LITERAL) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1229 | /* pattern starts with a literal character. this is used |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1230 | for short prefixes, and if fast search is disabled */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1231 | SRE_CODE chr = pattern[1]; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1232 | end = state->end; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1233 | for (;;) { |
| 1234 | while (ptr < end && (SRE_CODE) ptr[0] != chr) |
| 1235 | ptr++; |
| 1236 | if (ptr == end) |
| 1237 | return 0; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1238 | TRACE(("|%p|%p|SEARCH LITERAL\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1239 | state->start = ptr; |
| 1240 | state->ptr = ++ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1241 | status = SRE_MATCH(state, pattern + 2, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1242 | if (status != 0) |
| 1243 | break; |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1244 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1245 | } else if (charset) { |
| 1246 | /* pattern starts with a character from a known set */ |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1247 | end = state->end; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1248 | for (;;) { |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1249 | while (ptr < end && !SRE_CHARSET(charset, ptr[0])) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1250 | ptr++; |
| 1251 | if (ptr == end) |
| 1252 | return 0; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1253 | TRACE(("|%p|%p|SEARCH CHARSET\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1254 | state->start = ptr; |
| 1255 | state->ptr = ptr; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1256 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1257 | if (status != 0) |
| 1258 | break; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1259 | ptr++; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1260 | } |
| 1261 | } else |
| 1262 | /* general case */ |
| 1263 | while (ptr <= end) { |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1264 | TRACE(("|%p|%p|SEARCH\n", pattern, ptr)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1265 | state->start = state->ptr = ptr++; |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1266 | status = SRE_MATCH(state, pattern, 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1267 | if (status != 0) |
| 1268 | break; |
| 1269 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1270 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1271 | return status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1272 | } |
Fredrik Lundh | 3562f11 | 2000-07-02 12:00:07 +0000 | [diff] [blame] | 1273 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1274 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1275 | #if !defined(SRE_RECURSIVE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1276 | |
| 1277 | /* -------------------------------------------------------------------- */ |
| 1278 | /* factories and destructors */ |
| 1279 | |
| 1280 | /* see sre.h for object declarations */ |
| 1281 | |
| 1282 | staticforward PyTypeObject Pattern_Type; |
| 1283 | staticforward PyTypeObject Match_Type; |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1284 | staticforward PyTypeObject Scanner_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1285 | |
| 1286 | static PyObject * |
| 1287 | _compile(PyObject* self_, PyObject* args) |
| 1288 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1289 | /* "compile" pattern descriptor to pattern object */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1290 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1291 | PatternObject* self; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1292 | int i, n; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1293 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1294 | PyObject* pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1295 | int flags = 0; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1296 | PyObject* code; |
| 1297 | int groups = 0; |
| 1298 | PyObject* groupindex = NULL; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1299 | PyObject* indexgroup = NULL; |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1300 | if (!PyArg_ParseTuple(args, "OiO!|iOO", &pattern, &flags, |
| 1301 | &PyList_Type, &code, &groups, |
| 1302 | &groupindex, &indexgroup)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1303 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1304 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1305 | n = PyList_GET_SIZE(code); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1306 | |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 1307 | self = PyObject_NEW_VAR(PatternObject, &Pattern_Type, n); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1308 | if (!self) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1309 | return NULL; |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1310 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1311 | self->codesize = n; |
| 1312 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1313 | for (i = 0; i < n; i++) { |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1314 | PyObject *o = PyList_GET_ITEM(code, i); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1315 | self->code[i] = (SRE_CODE) PyInt_AsLong(o); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1316 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1317 | |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1318 | if (PyErr_Occurred()) { |
| 1319 | PyObject_DEL(self); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1320 | return NULL; |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1321 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1322 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1323 | Py_INCREF(pattern); |
| 1324 | self->pattern = pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1325 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1326 | self->flags = flags; |
| 1327 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1328 | self->groups = groups; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1329 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1330 | Py_XINCREF(groupindex); |
| 1331 | self->groupindex = groupindex; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1332 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1333 | Py_XINCREF(indexgroup); |
| 1334 | self->indexgroup = indexgroup; |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 1335 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1336 | return (PyObject*) self; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1337 | } |
| 1338 | |
| 1339 | static PyObject * |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1340 | sre_codesize(PyObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1341 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1342 | return Py_BuildValue("i", sizeof(SRE_CODE)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1343 | } |
| 1344 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1345 | static PyObject * |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1346 | sre_getlower(PyObject* self, PyObject* args) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1347 | { |
| 1348 | int character, flags; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1349 | if (!PyArg_ParseTuple(args, "ii", &character, &flags)) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1350 | return NULL; |
| 1351 | if (flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1352 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1353 | if (flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1354 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1355 | return Py_BuildValue("i", sre_lower_unicode(character)); |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1356 | #else |
| 1357 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1358 | #endif |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1359 | return Py_BuildValue("i", sre_lower(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1360 | } |
| 1361 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1362 | LOCAL(void) |
| 1363 | state_reset(SRE_STATE* state) |
| 1364 | { |
| 1365 | int i; |
| 1366 | |
| 1367 | state->lastmark = 0; |
| 1368 | |
| 1369 | /* FIXME: dynamic! */ |
| 1370 | for (i = 0; i < SRE_MARK_SIZE; i++) |
| 1371 | state->mark[i] = NULL; |
| 1372 | |
| 1373 | state->lastindex = -1; |
| 1374 | |
| 1375 | state->repeat = NULL; |
| 1376 | |
| 1377 | mark_fini(state); |
| 1378 | } |
| 1379 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1380 | LOCAL(PyObject*) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1381 | state_init(SRE_STATE* state, PatternObject* pattern, PyObject* string, |
| 1382 | int start, int end) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1383 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1384 | /* prepare state object */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1385 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1386 | PyBufferProcs *buffer; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1387 | int size, bytes; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1388 | void* ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1389 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1390 | memset(state, 0, sizeof(SRE_STATE)); |
| 1391 | |
| 1392 | state->lastindex = -1; |
| 1393 | |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1394 | #if defined(HAVE_UNICODE) |
| 1395 | if (PyUnicode_Check(string)) { |
| 1396 | /* unicode strings doesn't always support the buffer interface */ |
| 1397 | ptr = (void*) PyUnicode_AS_DATA(string); |
| 1398 | bytes = PyUnicode_GET_DATA_SIZE(string); |
| 1399 | size = PyUnicode_GET_SIZE(string); |
| 1400 | state->charsize = sizeof(Py_UNICODE); |
| 1401 | |
| 1402 | } else { |
| 1403 | #endif |
| 1404 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1405 | /* get pointer to string buffer */ |
| 1406 | buffer = string->ob_type->tp_as_buffer; |
| 1407 | if (!buffer || !buffer->bf_getreadbuffer || !buffer->bf_getsegcount || |
| 1408 | buffer->bf_getsegcount(string, NULL) != 1) { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1409 | PyErr_SetString(PyExc_TypeError, "expected string or buffer"); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1410 | return NULL; |
| 1411 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1412 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1413 | /* determine buffer size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1414 | bytes = buffer->bf_getreadbuffer(string, 0, &ptr); |
| 1415 | if (bytes < 0) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1416 | PyErr_SetString(PyExc_TypeError, "buffer has negative size"); |
| 1417 | return NULL; |
| 1418 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1419 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1420 | /* determine character size */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1421 | #if PY_VERSION_HEX >= 0x01060000 |
| 1422 | size = PyObject_Size(string); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1423 | #else |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1424 | size = PyObject_Length(string); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1425 | #endif |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1426 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1427 | if (PyString_Check(string) || bytes == size) |
| 1428 | state->charsize = 1; |
| 1429 | #if defined(HAVE_UNICODE) |
| 1430 | else if (bytes == (int) (size * sizeof(Py_UNICODE))) |
| 1431 | state->charsize = sizeof(Py_UNICODE); |
| 1432 | #endif |
| 1433 | else { |
| 1434 | PyErr_SetString(PyExc_TypeError, "buffer size mismatch"); |
| 1435 | return NULL; |
| 1436 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1437 | |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1438 | #if defined(HAVE_UNICODE) |
| 1439 | } |
| 1440 | #endif |
| 1441 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1442 | /* adjust boundaries */ |
| 1443 | if (start < 0) |
| 1444 | start = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1445 | else if (start > size) |
| 1446 | start = size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1447 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1448 | if (end < 0) |
| 1449 | end = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1450 | else if (end > size) |
| 1451 | end = size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1452 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1453 | state->beginning = ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1454 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1455 | state->start = (void*) ((char*) ptr + start * state->charsize); |
| 1456 | state->end = (void*) ((char*) ptr + end * state->charsize); |
| 1457 | |
| 1458 | Py_INCREF(string); |
| 1459 | state->string = string; |
| 1460 | state->pos = start; |
| 1461 | state->endpos = end; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1462 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1463 | if (pattern->flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1464 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1465 | else if (pattern->flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1466 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1467 | state->lower = sre_lower_unicode; |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1468 | #else |
| 1469 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1470 | #endif |
| 1471 | else |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 1472 | state->lower = sre_lower; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1473 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1474 | return string; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1475 | } |
| 1476 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1477 | LOCAL(void) |
| 1478 | state_fini(SRE_STATE* state) |
| 1479 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1480 | Py_XDECREF(state->string); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 1481 | mark_fini(state); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1482 | } |
| 1483 | |
| 1484 | LOCAL(PyObject*) |
| 1485 | state_getslice(SRE_STATE* state, int index, PyObject* string) |
| 1486 | { |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1487 | int i, j; |
| 1488 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1489 | index = (index - 1) * 2; |
| 1490 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1491 | if (string == Py_None || !state->mark[index] || !state->mark[index+1]) { |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1492 | i = j = 0; |
| 1493 | } else { |
| 1494 | i = ((char*)state->mark[index] - (char*)state->beginning) / |
| 1495 | state->charsize; |
| 1496 | j = ((char*)state->mark[index+1] - (char*)state->beginning) / |
| 1497 | state->charsize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1498 | } |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1499 | |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 1500 | return PySequence_GetSlice(string, i, j); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1503 | static void |
| 1504 | pattern_error(int status) |
| 1505 | { |
| 1506 | switch (status) { |
| 1507 | case SRE_ERROR_RECURSION_LIMIT: |
| 1508 | PyErr_SetString( |
| 1509 | PyExc_RuntimeError, |
| 1510 | "maximum recursion limit exceeded" |
| 1511 | ); |
| 1512 | break; |
| 1513 | case SRE_ERROR_MEMORY: |
| 1514 | PyErr_NoMemory(); |
| 1515 | break; |
| 1516 | default: |
| 1517 | /* other error codes indicate compiler/engine bugs */ |
| 1518 | PyErr_SetString( |
| 1519 | PyExc_RuntimeError, |
| 1520 | "internal error in regular expression engine" |
| 1521 | ); |
| 1522 | } |
| 1523 | } |
| 1524 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1525 | static PyObject* |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1526 | pattern_new_match(PatternObject* pattern, SRE_STATE* state, int status) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1527 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1528 | /* create match object (from state object) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1529 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1530 | MatchObject* match; |
| 1531 | int i, j; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1532 | char* base; |
| 1533 | int n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1534 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1535 | if (status > 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1536 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1537 | /* create match object (with room for extra group marks) */ |
| 1538 | match = PyObject_NEW_VAR(MatchObject, &Match_Type, |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1539 | 2*(pattern->groups+1)); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1540 | if (!match) |
| 1541 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1542 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1543 | Py_INCREF(pattern); |
| 1544 | match->pattern = pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1545 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1546 | Py_INCREF(state->string); |
| 1547 | match->string = state->string; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1548 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1549 | match->regs = NULL; |
| 1550 | match->groups = pattern->groups+1; |
| 1551 | |
| 1552 | /* fill in group slices */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1553 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1554 | base = (char*) state->beginning; |
| 1555 | n = state->charsize; |
| 1556 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1557 | match->mark[0] = ((char*) state->start - base) / n; |
| 1558 | match->mark[1] = ((char*) state->ptr - base) / n; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1559 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1560 | for (i = j = 0; i < pattern->groups; i++, j+=2) |
| 1561 | if (j+1 <= state->lastmark && state->mark[j] && state->mark[j+1]) { |
| 1562 | match->mark[j+2] = ((char*) state->mark[j] - base) / n; |
| 1563 | match->mark[j+3] = ((char*) state->mark[j+1] - base) / n; |
| 1564 | } else |
| 1565 | match->mark[j+2] = match->mark[j+3] = -1; /* undefined */ |
| 1566 | |
| 1567 | match->pos = state->pos; |
| 1568 | match->endpos = state->endpos; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1569 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1570 | match->lastindex = state->lastindex; |
| 1571 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1572 | return (PyObject*) match; |
Fredrik Lundh | 7cafe4d | 2000-07-02 17:33:27 +0000 | [diff] [blame] | 1573 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1574 | } else if (status == 0) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1575 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1576 | /* no match */ |
| 1577 | Py_INCREF(Py_None); |
| 1578 | return Py_None; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1579 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1580 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1581 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1582 | /* internal error */ |
| 1583 | pattern_error(status); |
| 1584 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1585 | } |
| 1586 | |
| 1587 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1588 | pattern_scanner(PatternObject* pattern, PyObject* args) |
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 | /* create search state object */ |
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 | ScannerObject* self; |
| 1593 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1594 | PyObject* string; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1595 | int start = 0; |
| 1596 | int end = INT_MAX; |
| 1597 | if (!PyArg_ParseTuple(args, "O|ii:scanner", &string, &start, &end)) |
| 1598 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1599 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1600 | /* create scanner object */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 1601 | self = PyObject_NEW(ScannerObject, &Scanner_Type); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1602 | if (!self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1603 | return NULL; |
| 1604 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1605 | string = state_init(&self->state, pattern, string, start, end); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1606 | if (!string) { |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1607 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1608 | return NULL; |
| 1609 | } |
| 1610 | |
| 1611 | Py_INCREF(pattern); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1612 | self->pattern = (PyObject*) pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1613 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1614 | return (PyObject*) self; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1615 | } |
| 1616 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1617 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1618 | pattern_dealloc(PatternObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1619 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1620 | Py_XDECREF(self->pattern); |
| 1621 | Py_XDECREF(self->groupindex); |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 1622 | Py_XDECREF(self->indexgroup); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1623 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1624 | } |
| 1625 | |
| 1626 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1627 | pattern_match(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1628 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1629 | SRE_STATE state; |
| 1630 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1631 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1632 | PyObject* string; |
| 1633 | int start = 0; |
| 1634 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1635 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
| 1636 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:match", kwlist, |
| 1637 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1638 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1639 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1640 | string = state_init(&state, self, string, start, end); |
| 1641 | if (!string) |
| 1642 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1643 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1644 | state.ptr = state.start; |
| 1645 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1646 | TRACE(("|%p|%p|MATCH\n", PatternObject_GetCode(self), state.ptr)); |
| 1647 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1648 | if (state.charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1649 | status = sre_match(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1650 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1651 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 1652 | status = sre_umatch(&state, PatternObject_GetCode(self), 1); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1653 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1654 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1655 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1656 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
| 1657 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1658 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1659 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1660 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1661 | } |
| 1662 | |
| 1663 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1664 | pattern_search(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1665 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1666 | SRE_STATE state; |
| 1667 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1668 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1669 | PyObject* string; |
| 1670 | int start = 0; |
| 1671 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1672 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
| 1673 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:search", kwlist, |
| 1674 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1675 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1676 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1677 | string = state_init(&state, self, string, start, end); |
| 1678 | if (!string) |
| 1679 | return NULL; |
| 1680 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1681 | TRACE(("|%p|%p|SEARCH\n", PatternObject_GetCode(self), state.ptr)); |
| 1682 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1683 | if (state.charsize == 1) { |
| 1684 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1685 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1686 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1687 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1688 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1689 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1690 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 1691 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
| 1692 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1693 | state_fini(&state); |
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 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1696 | } |
| 1697 | |
| 1698 | static PyObject* |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1699 | call(char* function, PyObject* args) |
| 1700 | { |
| 1701 | PyObject* name; |
| 1702 | PyObject* module; |
| 1703 | PyObject* func; |
| 1704 | PyObject* result; |
| 1705 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 1706 | name = PyString_FromString(SRE_MODULE); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1707 | if (!name) |
| 1708 | return NULL; |
| 1709 | module = PyImport_Import(name); |
| 1710 | Py_DECREF(name); |
| 1711 | if (!module) |
| 1712 | return NULL; |
| 1713 | func = PyObject_GetAttrString(module, function); |
| 1714 | Py_DECREF(module); |
| 1715 | if (!func) |
| 1716 | return NULL; |
| 1717 | result = PyObject_CallObject(func, args); |
| 1718 | Py_DECREF(func); |
| 1719 | Py_DECREF(args); |
| 1720 | return result; |
| 1721 | } |
| 1722 | |
| 1723 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1724 | pattern_sub(PatternObject* self, PyObject* args, PyObject* kw) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1725 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1726 | PyObject* template; |
| 1727 | PyObject* string; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1728 | PyObject* count = Py_False; /* zero */ |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1729 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
| 1730 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|O:sub", kwlist, |
| 1731 | &template, &string, &count)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1732 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1733 | |
| 1734 | /* delegate to Python code */ |
| 1735 | return call("_sub", Py_BuildValue("OOOO", self, template, string, count)); |
| 1736 | } |
| 1737 | |
| 1738 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1739 | pattern_subn(PatternObject* self, PyObject* args, PyObject* kw) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1740 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1741 | PyObject* template; |
| 1742 | PyObject* string; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1743 | PyObject* count = Py_False; /* zero */ |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1744 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
| 1745 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|O:subn", kwlist, |
| 1746 | &template, &string, &count)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1747 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1748 | |
| 1749 | /* delegate to Python code */ |
| 1750 | return call("_subn", Py_BuildValue("OOOO", self, template, string, count)); |
| 1751 | } |
| 1752 | |
| 1753 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1754 | pattern_split(PatternObject* self, PyObject* args, PyObject* kw) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1755 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1756 | PyObject* string; |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 1757 | PyObject* maxsplit = Py_False; /* zero */ |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1758 | static char* kwlist[] = { "source", "maxsplit", NULL }; |
| 1759 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|O:split", kwlist, |
| 1760 | &string, &maxsplit)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1761 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1762 | |
| 1763 | /* delegate to Python code */ |
| 1764 | return call("_split", Py_BuildValue("OOO", self, string, maxsplit)); |
| 1765 | } |
| 1766 | |
| 1767 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1768 | pattern_findall(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1769 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1770 | SRE_STATE state; |
| 1771 | PyObject* list; |
| 1772 | int status; |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1773 | int i; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1774 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1775 | PyObject* string; |
| 1776 | int start = 0; |
| 1777 | int end = INT_MAX; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1778 | static char* kwlist[] = { "source", "pos", "endpos", NULL }; |
| 1779 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|ii:findall", kwlist, |
| 1780 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1781 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1782 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1783 | string = state_init(&state, self, string, start, end); |
| 1784 | if (!string) |
| 1785 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1786 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1787 | list = PyList_New(0); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1788 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1789 | while (state.start <= state.end) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1790 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1791 | PyObject* item; |
| 1792 | |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 1793 | state_reset(&state); |
| 1794 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1795 | state.ptr = state.start; |
| 1796 | |
| 1797 | if (state.charsize == 1) { |
| 1798 | status = sre_search(&state, PatternObject_GetCode(self)); |
| 1799 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1800 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1801 | status = sre_usearch(&state, PatternObject_GetCode(self)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1802 | #endif |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1803 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1804 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1805 | if (status > 0) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1806 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1807 | /* don't bother to build a match object */ |
| 1808 | switch (self->groups) { |
| 1809 | case 0: |
| 1810 | item = PySequence_GetSlice( |
| 1811 | string, |
| 1812 | ((char*) state.start - (char*) state.beginning) / |
| 1813 | state.charsize, |
| 1814 | ((char*) state.ptr - (char*) state.beginning) / |
| 1815 | state.charsize); |
| 1816 | if (!item) |
| 1817 | goto error; |
| 1818 | break; |
| 1819 | case 1: |
| 1820 | item = state_getslice(&state, 1, string); |
| 1821 | if (!item) |
| 1822 | goto error; |
| 1823 | break; |
| 1824 | default: |
| 1825 | item = PyTuple_New(self->groups); |
| 1826 | if (!item) |
| 1827 | goto error; |
| 1828 | for (i = 0; i < self->groups; i++) { |
| 1829 | PyObject* o = state_getslice(&state, i+1, string); |
| 1830 | if (!o) { |
| 1831 | Py_DECREF(item); |
| 1832 | goto error; |
| 1833 | } |
| 1834 | PyTuple_SET_ITEM(item, i, o); |
| 1835 | } |
| 1836 | break; |
| 1837 | } |
| 1838 | |
Fredrik Lundh | e67d8e5 | 2000-08-27 21:32:46 +0000 | [diff] [blame] | 1839 | status = PyList_Append(list, item); |
| 1840 | Py_DECREF(item); |
| 1841 | |
| 1842 | if (status < 0) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1843 | goto error; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1844 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1845 | if (state.ptr == state.start) |
| 1846 | state.start = (void*) ((char*) state.ptr + state.charsize); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1847 | else |
| 1848 | state.start = state.ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1849 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1850 | } else { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1851 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1852 | if (status == 0) |
| 1853 | break; |
| 1854 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 1855 | pattern_error(status); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1856 | goto error; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1857 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1858 | } |
| 1859 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1860 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1861 | state_fini(&state); |
| 1862 | return list; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1863 | |
| 1864 | error: |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1865 | Py_DECREF(list); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1866 | state_fini(&state); |
| 1867 | return NULL; |
| 1868 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1869 | } |
| 1870 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1871 | static PyObject* |
| 1872 | pattern_copy(PatternObject* self, PyObject* args) |
| 1873 | { |
| 1874 | #if USE_BUILTIN_COPY |
| 1875 | PatternObject* copy; |
| 1876 | int offset; |
| 1877 | |
| 1878 | /* work in progress */ |
| 1879 | |
| 1880 | copy = PyObject_NEW_VAR(PatternObject, &Pattern_Type, self->codesize); |
| 1881 | if (!copy) |
| 1882 | return NULL; |
| 1883 | |
| 1884 | offset = offsetof(PatternObject, groups); |
| 1885 | |
| 1886 | Py_XINCREF(self->groupindex); |
| 1887 | Py_XINCREF(self->indexgroup); |
| 1888 | Py_XINCREF(self->pattern); |
| 1889 | |
| 1890 | memcpy((char*) copy + offset, (char*) self + offset, |
| 1891 | sizeof(PatternObject) + self->codesize * sizeof(SRE_CODE) - offset); |
| 1892 | |
| 1893 | return (PyObject*) copy; |
| 1894 | #else |
| 1895 | PyErr_SetString(PyExc_TypeError, "cannot copy this pattern object"); |
| 1896 | return NULL; |
| 1897 | #endif |
| 1898 | } |
| 1899 | |
| 1900 | static PyObject* |
| 1901 | pattern_deepcopy(PatternObject* self, PyObject* args) |
| 1902 | { |
| 1903 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this pattern object"); |
| 1904 | return NULL; |
| 1905 | } |
| 1906 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1907 | static PyMethodDef pattern_methods[] = { |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1908 | {"match", (PyCFunction) pattern_match, METH_VARARGS|METH_KEYWORDS}, |
| 1909 | {"search", (PyCFunction) pattern_search, METH_VARARGS|METH_KEYWORDS}, |
| 1910 | {"sub", (PyCFunction) pattern_sub, METH_VARARGS|METH_KEYWORDS}, |
| 1911 | {"subn", (PyCFunction) pattern_subn, METH_VARARGS|METH_KEYWORDS}, |
| 1912 | {"split", (PyCFunction) pattern_split, METH_VARARGS|METH_KEYWORDS}, |
| 1913 | {"findall", (PyCFunction) pattern_findall, METH_VARARGS|METH_KEYWORDS}, |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1914 | {"scanner", (PyCFunction) pattern_scanner, METH_VARARGS}, |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1915 | {"__copy__", (PyCFunction) pattern_copy, METH_VARARGS}, |
| 1916 | {"__deepcopy__", (PyCFunction) pattern_deepcopy, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1917 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1918 | }; |
| 1919 | |
| 1920 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1921 | pattern_getattr(PatternObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1922 | { |
| 1923 | PyObject* res; |
| 1924 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1925 | res = Py_FindMethod(pattern_methods, (PyObject*) self, name); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1926 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1927 | if (res) |
| 1928 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1929 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1930 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1931 | |
| 1932 | /* attributes */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1933 | if (!strcmp(name, "pattern")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1934 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1935 | return self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1936 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1937 | |
| 1938 | if (!strcmp(name, "flags")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1939 | return Py_BuildValue("i", self->flags); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1940 | |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 1941 | if (!strcmp(name, "groups")) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1942 | return Py_BuildValue("i", self->groups); |
Fredrik Lundh | 01016fe | 2000-06-30 00:27:46 +0000 | [diff] [blame] | 1943 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1944 | if (!strcmp(name, "groupindex") && self->groupindex) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1945 | Py_INCREF(self->groupindex); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1946 | return self->groupindex; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1947 | } |
| 1948 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1949 | PyErr_SetString(PyExc_AttributeError, name); |
| 1950 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1951 | } |
| 1952 | |
| 1953 | statichere PyTypeObject Pattern_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1954 | PyObject_HEAD_INIT(NULL) |
| 1955 | 0, "SRE_Pattern", |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1956 | sizeof(PatternObject), sizeof(SRE_CODE), |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1957 | (destructor)pattern_dealloc, /*tp_dealloc*/ |
| 1958 | 0, /*tp_print*/ |
| 1959 | (getattrfunc)pattern_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1960 | }; |
| 1961 | |
| 1962 | /* -------------------------------------------------------------------- */ |
| 1963 | /* match methods */ |
| 1964 | |
| 1965 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1966 | match_dealloc(MatchObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1967 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1968 | Py_XDECREF(self->regs); |
| 1969 | Py_XDECREF(self->string); |
| 1970 | Py_DECREF(self->pattern); |
| 1971 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1972 | } |
| 1973 | |
| 1974 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1975 | match_getslice_by_index(MatchObject* self, int index, PyObject* def) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1976 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1977 | if (index < 0 || index >= self->groups) { |
| 1978 | /* raise IndexError if we were given a bad group number */ |
| 1979 | PyErr_SetString( |
| 1980 | PyExc_IndexError, |
| 1981 | "no such group" |
| 1982 | ); |
| 1983 | return NULL; |
| 1984 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1985 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1986 | index *= 2; |
| 1987 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1988 | if (self->string == Py_None || self->mark[index] < 0) { |
| 1989 | /* return default value if the string or group is undefined */ |
| 1990 | Py_INCREF(def); |
| 1991 | return def; |
| 1992 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1993 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1994 | return PySequence_GetSlice( |
| 1995 | self->string, self->mark[index], self->mark[index+1] |
| 1996 | ); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1997 | } |
| 1998 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1999 | static int |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2000 | match_getindex(MatchObject* self, PyObject* index) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2001 | { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2002 | int i; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2003 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2004 | if (PyInt_Check(index)) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2005 | return (int) PyInt_AS_LONG(index); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2006 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2007 | i = -1; |
| 2008 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2009 | if (self->pattern->groupindex) { |
| 2010 | index = PyObject_GetItem(self->pattern->groupindex, index); |
| 2011 | if (index) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2012 | if (PyInt_Check(index)) |
| 2013 | i = (int) PyInt_AS_LONG(index); |
| 2014 | Py_DECREF(index); |
| 2015 | } else |
| 2016 | PyErr_Clear(); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2017 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2018 | |
| 2019 | return i; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2020 | } |
| 2021 | |
| 2022 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2023 | match_getslice(MatchObject* self, PyObject* index, PyObject* def) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2024 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2025 | return match_getslice_by_index(self, match_getindex(self, index), def); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2026 | } |
| 2027 | |
| 2028 | static PyObject* |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 2029 | match_expand(MatchObject* self, PyObject* args) |
| 2030 | { |
| 2031 | PyObject* template; |
| 2032 | if (!PyArg_ParseTuple(args, "O:expand", &template)) |
| 2033 | return NULL; |
| 2034 | |
| 2035 | /* delegate to Python code */ |
| 2036 | return call( |
| 2037 | "_expand", |
| 2038 | Py_BuildValue("OOO", self->pattern, self, template) |
| 2039 | ); |
| 2040 | } |
| 2041 | |
| 2042 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2043 | match_group(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2044 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2045 | PyObject* result; |
| 2046 | int i, size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2047 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2048 | size = PyTuple_GET_SIZE(args); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2049 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2050 | switch (size) { |
| 2051 | case 0: |
| 2052 | result = match_getslice(self, Py_False, Py_None); |
| 2053 | break; |
| 2054 | case 1: |
| 2055 | result = match_getslice(self, PyTuple_GET_ITEM(args, 0), Py_None); |
| 2056 | break; |
| 2057 | default: |
| 2058 | /* fetch multiple items */ |
| 2059 | result = PyTuple_New(size); |
| 2060 | if (!result) |
| 2061 | return NULL; |
| 2062 | for (i = 0; i < size; i++) { |
| 2063 | PyObject* item = match_getslice( |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 2064 | self, PyTuple_GET_ITEM(args, i), Py_None |
| 2065 | ); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2066 | if (!item) { |
| 2067 | Py_DECREF(result); |
| 2068 | return NULL; |
| 2069 | } |
| 2070 | PyTuple_SET_ITEM(result, i, item); |
| 2071 | } |
| 2072 | break; |
| 2073 | } |
| 2074 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2075 | } |
| 2076 | |
| 2077 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2078 | match_groups(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2079 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2080 | PyObject* result; |
| 2081 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2082 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2083 | PyObject* def = Py_None; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2084 | static char* kwlist[] = { "default", NULL }; |
| 2085 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groups", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2086 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2087 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2088 | result = PyTuple_New(self->groups-1); |
| 2089 | if (!result) |
| 2090 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2091 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2092 | for (index = 1; index < self->groups; index++) { |
| 2093 | PyObject* item; |
| 2094 | item = match_getslice_by_index(self, index, def); |
| 2095 | if (!item) { |
| 2096 | Py_DECREF(result); |
| 2097 | return NULL; |
| 2098 | } |
| 2099 | PyTuple_SET_ITEM(result, index-1, item); |
| 2100 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2101 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2102 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2106 | match_groupdict(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2107 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2108 | PyObject* result; |
| 2109 | PyObject* keys; |
| 2110 | int index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2111 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2112 | PyObject* def = Py_None; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2113 | static char* kwlist[] = { "default", NULL }; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2114 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groupdict", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2115 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2116 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2117 | result = PyDict_New(); |
| 2118 | if (!result || !self->pattern->groupindex) |
| 2119 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2120 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2121 | keys = PyMapping_Keys(self->pattern->groupindex); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2122 | if (!keys) |
| 2123 | goto failed; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2124 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2125 | for (index = 0; index < PyList_GET_SIZE(keys); index++) { |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2126 | int status; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2127 | PyObject* key; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2128 | PyObject* value; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2129 | key = PyList_GET_ITEM(keys, index); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2130 | if (!key) |
| 2131 | goto failed; |
| 2132 | value = match_getslice(self, key, def); |
| 2133 | if (!value) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2134 | Py_DECREF(key); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2135 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2136 | } |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2137 | status = PyDict_SetItem(result, key, value); |
| 2138 | Py_DECREF(value); |
| 2139 | if (status < 0) |
| 2140 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2141 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2142 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2143 | Py_DECREF(keys); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2144 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2145 | return result; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 2146 | |
| 2147 | failed: |
| 2148 | Py_DECREF(keys); |
| 2149 | Py_DECREF(result); |
| 2150 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2151 | } |
| 2152 | |
| 2153 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2154 | match_start(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2155 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2156 | int index; |
| 2157 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2158 | PyObject* index_ = Py_False; /* zero */ |
| 2159 | if (!PyArg_ParseTuple(args, "|O:start", &index_)) |
| 2160 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2161 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2162 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2163 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2164 | if (index < 0 || index >= self->groups) { |
| 2165 | PyErr_SetString( |
| 2166 | PyExc_IndexError, |
| 2167 | "no such group" |
| 2168 | ); |
| 2169 | return NULL; |
| 2170 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2171 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2172 | /* mark is -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2173 | return Py_BuildValue("i", self->mark[index*2]); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2174 | } |
| 2175 | |
| 2176 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2177 | match_end(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2178 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2179 | int index; |
| 2180 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2181 | PyObject* index_ = Py_False; /* zero */ |
| 2182 | if (!PyArg_ParseTuple(args, "|O:end", &index_)) |
| 2183 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2184 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2185 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2186 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2187 | if (index < 0 || index >= self->groups) { |
| 2188 | PyErr_SetString( |
| 2189 | PyExc_IndexError, |
| 2190 | "no such group" |
| 2191 | ); |
| 2192 | return NULL; |
| 2193 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2194 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2195 | /* mark is -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2196 | return Py_BuildValue("i", self->mark[index*2+1]); |
| 2197 | } |
| 2198 | |
| 2199 | LOCAL(PyObject*) |
| 2200 | _pair(int i1, int i2) |
| 2201 | { |
| 2202 | PyObject* pair; |
| 2203 | PyObject* item; |
| 2204 | |
| 2205 | pair = PyTuple_New(2); |
| 2206 | if (!pair) |
| 2207 | return NULL; |
| 2208 | |
| 2209 | item = PyInt_FromLong(i1); |
| 2210 | if (!item) |
| 2211 | goto error; |
| 2212 | PyTuple_SET_ITEM(pair, 0, item); |
| 2213 | |
| 2214 | item = PyInt_FromLong(i2); |
| 2215 | if (!item) |
| 2216 | goto error; |
| 2217 | PyTuple_SET_ITEM(pair, 1, item); |
| 2218 | |
| 2219 | return pair; |
| 2220 | |
| 2221 | error: |
| 2222 | Py_DECREF(pair); |
| 2223 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2224 | } |
| 2225 | |
| 2226 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2227 | match_span(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2228 | { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2229 | int index; |
| 2230 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2231 | PyObject* index_ = Py_False; /* zero */ |
| 2232 | if (!PyArg_ParseTuple(args, "|O:span", &index_)) |
| 2233 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2234 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2235 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2236 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2237 | if (index < 0 || index >= self->groups) { |
| 2238 | PyErr_SetString( |
| 2239 | PyExc_IndexError, |
| 2240 | "no such group" |
| 2241 | ); |
| 2242 | return NULL; |
| 2243 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2244 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2245 | /* marks are -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2246 | return _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2247 | } |
| 2248 | |
| 2249 | static PyObject* |
| 2250 | match_regs(MatchObject* self) |
| 2251 | { |
| 2252 | PyObject* regs; |
| 2253 | PyObject* item; |
| 2254 | int index; |
| 2255 | |
| 2256 | regs = PyTuple_New(self->groups); |
| 2257 | if (!regs) |
| 2258 | return NULL; |
| 2259 | |
| 2260 | for (index = 0; index < self->groups; index++) { |
| 2261 | item = _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2262 | if (!item) { |
| 2263 | Py_DECREF(regs); |
| 2264 | return NULL; |
| 2265 | } |
| 2266 | PyTuple_SET_ITEM(regs, index, item); |
| 2267 | } |
| 2268 | |
| 2269 | Py_INCREF(regs); |
| 2270 | self->regs = regs; |
| 2271 | |
| 2272 | return regs; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2273 | } |
| 2274 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2275 | static PyObject* |
| 2276 | match_copy(MatchObject* self, PyObject* args) |
| 2277 | { |
| 2278 | #if USE_BUILTIN_COPY |
| 2279 | MatchObject* copy; |
| 2280 | int slots, offset; |
| 2281 | |
| 2282 | /* works in progress */ |
| 2283 | |
| 2284 | slots = 2 * (self->pattern->groups+1); |
| 2285 | |
| 2286 | copy = PyObject_NEW_VAR(MatchObject, &Match_Type, slots); |
| 2287 | if (!copy) |
| 2288 | return NULL; |
| 2289 | |
| 2290 | /* this value a constant, but any compiler should be able to |
| 2291 | figure that out all by itself */ |
| 2292 | offset = offsetof(MatchObject, string); |
| 2293 | |
| 2294 | Py_XINCREF(self->pattern); |
| 2295 | Py_XINCREF(self->string); |
| 2296 | Py_XINCREF(self->regs); |
| 2297 | |
| 2298 | memcpy((char*) copy + offset, (char*) self + offset, |
| 2299 | sizeof(MatchObject) + slots * sizeof(int) - offset); |
| 2300 | |
| 2301 | return (PyObject*) copy; |
| 2302 | #else |
| 2303 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this match object"); |
| 2304 | return NULL; |
| 2305 | #endif |
| 2306 | } |
| 2307 | |
| 2308 | static PyObject* |
| 2309 | match_deepcopy(MatchObject* self, PyObject* args) |
| 2310 | { |
| 2311 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this match object"); |
| 2312 | return NULL; |
| 2313 | } |
| 2314 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2315 | static PyMethodDef match_methods[] = { |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 2316 | {"group", (PyCFunction) match_group, METH_VARARGS}, |
| 2317 | {"start", (PyCFunction) match_start, METH_VARARGS}, |
| 2318 | {"end", (PyCFunction) match_end, METH_VARARGS}, |
| 2319 | {"span", (PyCFunction) match_span, METH_VARARGS}, |
| 2320 | {"groups", (PyCFunction) match_groups, METH_VARARGS|METH_KEYWORDS}, |
| 2321 | {"groupdict", (PyCFunction) match_groupdict, METH_VARARGS|METH_KEYWORDS}, |
| 2322 | {"expand", (PyCFunction) match_expand, METH_VARARGS}, |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2323 | {"__copy__", (PyCFunction) match_copy, METH_VARARGS}, |
| 2324 | {"__deepcopy__", (PyCFunction) match_deepcopy, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2325 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2326 | }; |
| 2327 | |
| 2328 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2329 | match_getattr(MatchObject* self, char* name) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2330 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2331 | PyObject* res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2332 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2333 | res = Py_FindMethod(match_methods, (PyObject*) self, name); |
| 2334 | if (res) |
| 2335 | return res; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2336 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2337 | PyErr_Clear(); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2338 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2339 | if (!strcmp(name, "lastindex")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2340 | if (self->lastindex >= 0) |
| 2341 | return Py_BuildValue("i", self->lastindex); |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2342 | Py_INCREF(Py_None); |
| 2343 | return Py_None; |
| 2344 | } |
| 2345 | |
| 2346 | if (!strcmp(name, "lastgroup")) { |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2347 | if (self->pattern->indexgroup && self->lastindex >= 0) { |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2348 | PyObject* result = PySequence_GetItem( |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 2349 | self->pattern->indexgroup, self->lastindex |
Fredrik Lundh | c230173 | 2000-07-02 22:25:39 +0000 | [diff] [blame] | 2350 | ); |
| 2351 | if (result) |
| 2352 | return result; |
| 2353 | PyErr_Clear(); |
| 2354 | } |
| 2355 | Py_INCREF(Py_None); |
| 2356 | return Py_None; |
| 2357 | } |
| 2358 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2359 | if (!strcmp(name, "string")) { |
| 2360 | if (self->string) { |
| 2361 | Py_INCREF(self->string); |
| 2362 | return self->string; |
| 2363 | } else { |
| 2364 | Py_INCREF(Py_None); |
| 2365 | return Py_None; |
| 2366 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2367 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2368 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2369 | if (!strcmp(name, "regs")) { |
| 2370 | if (self->regs) { |
| 2371 | Py_INCREF(self->regs); |
| 2372 | return self->regs; |
| 2373 | } else |
| 2374 | return match_regs(self); |
| 2375 | } |
| 2376 | |
| 2377 | if (!strcmp(name, "re")) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2378 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2379 | return (PyObject*) self->pattern; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2380 | } |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2381 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2382 | if (!strcmp(name, "pos")) |
| 2383 | return Py_BuildValue("i", self->pos); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2384 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2385 | if (!strcmp(name, "endpos")) |
| 2386 | return Py_BuildValue("i", self->endpos); |
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 | PyErr_SetString(PyExc_AttributeError, name); |
| 2389 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2390 | } |
| 2391 | |
| 2392 | /* FIXME: implement setattr("string", None) as a special case (to |
| 2393 | detach the associated string, if any */ |
| 2394 | |
| 2395 | statichere PyTypeObject Match_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2396 | PyObject_HEAD_INIT(NULL) |
| 2397 | 0, "SRE_Match", |
| 2398 | sizeof(MatchObject), sizeof(int), |
| 2399 | (destructor)match_dealloc, /*tp_dealloc*/ |
| 2400 | 0, /*tp_print*/ |
| 2401 | (getattrfunc)match_getattr /*tp_getattr*/ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2402 | }; |
| 2403 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2404 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2405 | /* scanner methods (experimental) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2406 | |
| 2407 | static void |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2408 | scanner_dealloc(ScannerObject* self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2409 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2410 | state_fini(&self->state); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2411 | Py_DECREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2412 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2413 | } |
| 2414 | |
| 2415 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2416 | scanner_match(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2417 | { |
| 2418 | SRE_STATE* state = &self->state; |
| 2419 | PyObject* match; |
| 2420 | int status; |
| 2421 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2422 | state_reset(state); |
| 2423 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2424 | state->ptr = state->start; |
| 2425 | |
| 2426 | if (state->charsize == 1) { |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 2427 | status = sre_match(state, PatternObject_GetCode(self->pattern), 1); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2428 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2429 | #if defined(HAVE_UNICODE) |
Fredrik Lundh | 2f2c67d | 2000-08-01 21:05:41 +0000 | [diff] [blame] | 2430 | status = sre_umatch(state, PatternObject_GetCode(self->pattern), 1); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2431 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2432 | } |
| 2433 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2434 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2435 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2436 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2437 | if (status == 0 || state->ptr == state->start) |
| 2438 | state->start = (void*) ((char*) state->ptr + state->charsize); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2439 | else |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2440 | state->start = state->ptr; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2441 | |
| 2442 | return match; |
| 2443 | } |
| 2444 | |
| 2445 | |
| 2446 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2447 | scanner_search(ScannerObject* self, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2448 | { |
| 2449 | SRE_STATE* state = &self->state; |
| 2450 | PyObject* match; |
| 2451 | int status; |
| 2452 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2453 | state_reset(state); |
| 2454 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2455 | state->ptr = state->start; |
| 2456 | |
| 2457 | if (state->charsize == 1) { |
| 2458 | status = sre_search(state, PatternObject_GetCode(self->pattern)); |
| 2459 | } else { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2460 | #if defined(HAVE_UNICODE) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2461 | status = sre_usearch(state, PatternObject_GetCode(self->pattern)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2462 | #endif |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2463 | } |
| 2464 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2465 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2466 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2467 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2468 | if (status == 0 || state->ptr == state->start) |
| 2469 | state->start = (void*) ((char*) state->ptr + state->charsize); |
| 2470 | else |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2471 | state->start = state->ptr; |
| 2472 | |
| 2473 | return match; |
| 2474 | } |
| 2475 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2476 | static PyMethodDef scanner_methods[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2477 | {"match", (PyCFunction) scanner_match, 0}, |
| 2478 | {"search", (PyCFunction) scanner_search, 0}, |
| 2479 | {NULL, NULL} |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2480 | }; |
| 2481 | |
| 2482 | static PyObject* |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2483 | scanner_getattr(ScannerObject* self, char* name) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2484 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2485 | PyObject* res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2486 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2487 | res = Py_FindMethod(scanner_methods, (PyObject*) self, name); |
| 2488 | if (res) |
| 2489 | return res; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2490 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2491 | PyErr_Clear(); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2492 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2493 | /* attributes */ |
| 2494 | if (!strcmp(name, "pattern")) { |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2495 | Py_INCREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2496 | return self->pattern; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2497 | } |
| 2498 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2499 | PyErr_SetString(PyExc_AttributeError, name); |
| 2500 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2501 | } |
| 2502 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2503 | statichere PyTypeObject Scanner_Type = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2504 | PyObject_HEAD_INIT(NULL) |
| 2505 | 0, "SRE_Scanner", |
| 2506 | sizeof(ScannerObject), 0, |
| 2507 | (destructor)scanner_dealloc, /*tp_dealloc*/ |
| 2508 | 0, /*tp_print*/ |
| 2509 | (getattrfunc)scanner_getattr, /*tp_getattr*/ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2510 | }; |
| 2511 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2512 | static PyMethodDef _functions[] = { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2513 | {"compile", _compile, 1}, |
| 2514 | {"getcodesize", sre_codesize, 1}, |
| 2515 | {"getlower", sre_getlower, 1}, |
| 2516 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2517 | }; |
| 2518 | |
Tim Peters | 5687ffe | 2001-02-28 16:44:18 +0000 | [diff] [blame] | 2519 | DL_EXPORT(void) |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 2520 | init_sre(void) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2521 | { |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2522 | PyObject* m; |
| 2523 | PyObject* d; |
| 2524 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2525 | /* Patch object types */ |
| 2526 | Pattern_Type.ob_type = Match_Type.ob_type = |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2527 | Scanner_Type.ob_type = &PyType_Type; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2528 | |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 2529 | m = Py_InitModule("_" SRE_MODULE, _functions); |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2530 | d = PyModule_GetDict(m); |
| 2531 | |
| 2532 | PyDict_SetItemString( |
| 2533 | d, "MAGIC", (PyObject*) PyInt_FromLong(SRE_MAGIC) |
| 2534 | ); |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 2535 | |
| 2536 | PyDict_SetItemString( |
| 2537 | d, "copyright", (PyObject*) PyString_FromString(copyright) |
| 2538 | ); |
| 2539 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2540 | } |
| 2541 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2542 | #endif /* !defined(SRE_RECURSIVE) */ |