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: |
Georg Brandl | daa1fa9 | 2013-10-13 09:32:59 +0200 | [diff] [blame] | 7 | * 1999-10-24 fl created (based on existing template matcher code) |
| 8 | * 2000-03-06 fl first alpha, sort of |
| 9 | * 2000-08-01 fl fixes for 1.6b1 |
| 10 | * 2000-08-07 fl use PyOS_CheckStack() if available |
| 11 | * 2000-09-20 fl added expand method |
| 12 | * 2001-03-20 fl lots of fixes for 2.1b2 |
| 13 | * 2001-04-15 fl export copyright as Python attribute, not global |
| 14 | * 2001-04-28 fl added __copy__ methods (work in progress) |
| 15 | * 2001-05-14 fl fixes for 1.5.2 compatibility |
| 16 | * 2001-07-01 fl added BIGCHARSET support (from Martin von Loewis) |
| 17 | * 2001-10-18 fl fixed group reset issue (from Matthew Mueller) |
| 18 | * 2001-10-20 fl added split primitive; reenable unicode for 1.6/2.0/2.1 |
| 19 | * 2001-10-21 fl added sub/subn primitive |
| 20 | * 2001-10-24 fl added finditer primitive (for 2.2 only) |
| 21 | * 2001-12-07 fl fixed memory leak in sub/subn (Guido van Rossum) |
| 22 | * 2002-11-09 fl fixed empty sub/subn return type |
| 23 | * 2003-04-18 mvl fully support 4-byte codes |
| 24 | * 2003-10-17 gn implemented non recursive scheme |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 25 | * |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 26 | * Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 27 | * |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 28 | * This version of the SRE library can be redistributed under CNRI's |
| 29 | * Python 1.6 license. For any other use, please contact Secret Labs |
| 30 | * AB (info@pythonware.com). |
| 31 | * |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 32 | * Portions of this engine have been developed in cooperation with |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 33 | * CNRI. Hewlett-Packard provided funding for 1.6 integration and |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 34 | * other compatibility work. |
| 35 | */ |
| 36 | |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 37 | static char copyright[] = |
Fredrik Lundh | 09705f0 | 2002-11-22 12:46:35 +0000 | [diff] [blame] | 38 | " SRE 2.2.2 Copyright (c) 1997-2002 by Secret Labs AB "; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 39 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 40 | #define PY_SSIZE_T_CLEAN |
| 41 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 42 | #include "Python.h" |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 43 | #include "structmember.h" /* offsetof */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 44 | |
| 45 | #include "sre.h" |
| 46 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 47 | #define SRE_CODE_BITS (8 * sizeof(SRE_CODE)) |
| 48 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 49 | #include <ctype.h> |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 50 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 51 | /* name of this module, minus the leading underscore */ |
Fredrik Lundh | 1c5aa69 | 2001-01-16 07:37:30 +0000 | [diff] [blame] | 52 | #if !defined(SRE_MODULE) |
| 53 | #define SRE_MODULE "sre" |
| 54 | #endif |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 55 | |
Thomas Wouters | 9ada3d6 | 2006-04-21 09:47:09 +0000 | [diff] [blame] | 56 | #define SRE_PY_MODULE "re" |
| 57 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 58 | /* defining this one enables tracing */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 59 | #undef VERBOSE |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 60 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 61 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 62 | /* optional features */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 63 | |
| 64 | /* enables fast searching */ |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 65 | #define USE_FAST_SEARCH |
| 66 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 67 | /* enables copy/deepcopy handling (work in progress) */ |
| 68 | #undef USE_BUILTIN_COPY |
| 69 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 70 | /* -------------------------------------------------------------------- */ |
| 71 | |
Fredrik Lundh | 8094611 | 2000-06-29 18:03:25 +0000 | [diff] [blame] | 72 | #if defined(_MSC_VER) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 73 | #pragma optimize("agtw", on) /* doesn't seem to make much difference... */ |
Fredrik Lundh | 2855290 | 2000-07-05 21:14:16 +0000 | [diff] [blame] | 74 | #pragma warning(disable: 4710) /* who cares if functions are not inlined ;-) */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 75 | /* fastest possible local call under MSVC */ |
| 76 | #define LOCAL(type) static __inline type __fastcall |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 77 | #elif defined(USE_INLINE) |
Fredrik Lundh | 29c08be | 2000-06-29 23:33:12 +0000 | [diff] [blame] | 78 | #define LOCAL(type) static inline type |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 79 | #else |
| 80 | #define LOCAL(type) static type |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 81 | #endif |
| 82 | |
| 83 | /* error codes */ |
| 84 | #define SRE_ERROR_ILLEGAL -1 /* illegal opcode */ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 85 | #define SRE_ERROR_STATE -2 /* illegal state */ |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 86 | #define SRE_ERROR_RECURSION_LIMIT -3 /* runaway recursion */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 87 | #define SRE_ERROR_MEMORY -9 /* out of memory */ |
Christian Heimes | 2380ac7 | 2008-01-09 00:17:24 +0000 | [diff] [blame] | 88 | #define SRE_ERROR_INTERRUPTED -10 /* signal handler raised exception */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 89 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 90 | #if defined(VERBOSE) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 91 | #define TRACE(v) printf v |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 92 | #else |
| 93 | #define TRACE(v) |
| 94 | #endif |
| 95 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 96 | /* -------------------------------------------------------------------- */ |
| 97 | /* search engine state */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 98 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 99 | /* default character predicates (run sre_chars.py to regenerate tables) */ |
| 100 | |
| 101 | #define SRE_DIGIT_MASK 1 |
| 102 | #define SRE_SPACE_MASK 2 |
| 103 | #define SRE_LINEBREAK_MASK 4 |
| 104 | #define SRE_ALNUM_MASK 8 |
| 105 | #define SRE_WORD_MASK 16 |
| 106 | |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 107 | /* FIXME: this assumes ASCII. create tables in init_sre() instead */ |
| 108 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 109 | static char sre_char_info[128] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 2, |
| 110 | 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, |
| 111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, |
| 112 | 25, 25, 0, 0, 0, 0, 0, 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 113 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, |
| 114 | 0, 0, 16, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, |
| 115 | 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0 }; |
| 116 | |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 117 | 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] | 118 | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, |
| 119 | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, |
| 120 | 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, |
| 121 | 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, |
| 122 | 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, |
| 123 | 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, |
| 124 | 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, |
| 125 | 120, 121, 122, 123, 124, 125, 126, 127 }; |
| 126 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 127 | #define SRE_IS_DIGIT(ch)\ |
| 128 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_DIGIT_MASK) : 0) |
| 129 | #define SRE_IS_SPACE(ch)\ |
| 130 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_SPACE_MASK) : 0) |
| 131 | #define SRE_IS_LINEBREAK(ch)\ |
| 132 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_LINEBREAK_MASK) : 0) |
| 133 | #define SRE_IS_ALNUM(ch)\ |
| 134 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_ALNUM_MASK) : 0) |
| 135 | #define SRE_IS_WORD(ch)\ |
| 136 | ((ch) < 128 ? (sre_char_info[(ch)] & SRE_WORD_MASK) : 0) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 137 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 138 | static unsigned int sre_lower(unsigned int ch) |
| 139 | { |
Gustavo Niemeyer | 601b963 | 2004-02-14 00:31:13 +0000 | [diff] [blame] | 140 | return ((ch) < 128 ? (unsigned int)sre_char_lower[ch] : ch); |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 141 | } |
| 142 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 143 | /* locale-specific character predicates */ |
Gustavo Niemeyer | 601b963 | 2004-02-14 00:31:13 +0000 | [diff] [blame] | 144 | /* !(c & ~N) == (c < N+1) for any unsigned c, this avoids |
| 145 | * warnings when c's type supports only numbers < N+1 */ |
Gustavo Niemeyer | 601b963 | 2004-02-14 00:31:13 +0000 | [diff] [blame] | 146 | #define SRE_LOC_IS_ALNUM(ch) (!((ch) & ~255) ? isalnum((ch)) : 0) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 147 | #define SRE_LOC_IS_WORD(ch) (SRE_LOC_IS_ALNUM((ch)) || (ch) == '_') |
| 148 | |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 149 | static unsigned int sre_lower_locale(unsigned int ch) |
| 150 | { |
Gustavo Niemeyer | 601b963 | 2004-02-14 00:31:13 +0000 | [diff] [blame] | 151 | return ((ch) < 256 ? (unsigned int)tolower((ch)) : ch); |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 152 | } |
| 153 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 154 | /* unicode-specific character predicates */ |
| 155 | |
Victor Stinner | 0058b86 | 2011-09-29 03:27:47 +0200 | [diff] [blame] | 156 | #define SRE_UNI_IS_DIGIT(ch) Py_UNICODE_ISDECIMAL(ch) |
| 157 | #define SRE_UNI_IS_SPACE(ch) Py_UNICODE_ISSPACE(ch) |
| 158 | #define SRE_UNI_IS_LINEBREAK(ch) Py_UNICODE_ISLINEBREAK(ch) |
| 159 | #define SRE_UNI_IS_ALNUM(ch) Py_UNICODE_ISALNUM(ch) |
| 160 | #define SRE_UNI_IS_WORD(ch) (SRE_UNI_IS_ALNUM(ch) || (ch) == '_') |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 161 | |
| 162 | static unsigned int sre_lower_unicode(unsigned int ch) |
| 163 | { |
Victor Stinner | 0058b86 | 2011-09-29 03:27:47 +0200 | [diff] [blame] | 164 | return (unsigned int) Py_UNICODE_TOLOWER(ch); |
Fredrik Lundh | b25e1ad | 2001-03-22 15:50:10 +0000 | [diff] [blame] | 165 | } |
| 166 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 167 | LOCAL(int) |
| 168 | sre_category(SRE_CODE category, unsigned int ch) |
| 169 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 170 | switch (category) { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 171 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 172 | case SRE_CATEGORY_DIGIT: |
| 173 | return SRE_IS_DIGIT(ch); |
| 174 | case SRE_CATEGORY_NOT_DIGIT: |
| 175 | return !SRE_IS_DIGIT(ch); |
| 176 | case SRE_CATEGORY_SPACE: |
| 177 | return SRE_IS_SPACE(ch); |
| 178 | case SRE_CATEGORY_NOT_SPACE: |
| 179 | return !SRE_IS_SPACE(ch); |
| 180 | case SRE_CATEGORY_WORD: |
| 181 | return SRE_IS_WORD(ch); |
| 182 | case SRE_CATEGORY_NOT_WORD: |
| 183 | return !SRE_IS_WORD(ch); |
| 184 | case SRE_CATEGORY_LINEBREAK: |
| 185 | return SRE_IS_LINEBREAK(ch); |
| 186 | case SRE_CATEGORY_NOT_LINEBREAK: |
| 187 | return !SRE_IS_LINEBREAK(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 188 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 189 | case SRE_CATEGORY_LOC_WORD: |
| 190 | return SRE_LOC_IS_WORD(ch); |
| 191 | case SRE_CATEGORY_LOC_NOT_WORD: |
| 192 | return !SRE_LOC_IS_WORD(ch); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 193 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 194 | case SRE_CATEGORY_UNI_DIGIT: |
| 195 | return SRE_UNI_IS_DIGIT(ch); |
| 196 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 197 | return !SRE_UNI_IS_DIGIT(ch); |
| 198 | case SRE_CATEGORY_UNI_SPACE: |
| 199 | return SRE_UNI_IS_SPACE(ch); |
| 200 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 201 | return !SRE_UNI_IS_SPACE(ch); |
| 202 | case SRE_CATEGORY_UNI_WORD: |
| 203 | return SRE_UNI_IS_WORD(ch); |
| 204 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 205 | return !SRE_UNI_IS_WORD(ch); |
| 206 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 207 | return SRE_UNI_IS_LINEBREAK(ch); |
| 208 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 209 | return !SRE_UNI_IS_LINEBREAK(ch); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 210 | } |
| 211 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | /* helpers */ |
| 215 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 216 | static void |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 217 | data_stack_dealloc(SRE_STATE* state) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 218 | { |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 219 | if (state->data_stack) { |
Thomas Wouters | 477c8d5 | 2006-05-27 19:21:47 +0000 | [diff] [blame] | 220 | PyMem_FREE(state->data_stack); |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 221 | state->data_stack = NULL; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 222 | } |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 223 | state->data_stack_size = state->data_stack_base = 0; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | static int |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 227 | data_stack_grow(SRE_STATE* state, Py_ssize_t size) |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 228 | { |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 229 | Py_ssize_t minsize, cursize; |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 230 | minsize = state->data_stack_base+size; |
| 231 | cursize = state->data_stack_size; |
| 232 | if (cursize < minsize) { |
| 233 | void* stack; |
| 234 | cursize = minsize+minsize/4+1024; |
Serhiy Storchaka | 134f0de | 2013-09-05 18:01:15 +0300 | [diff] [blame] | 235 | TRACE(("allocate/grow stack %" PY_FORMAT_SIZE_T "d\n", cursize)); |
Thomas Wouters | 477c8d5 | 2006-05-27 19:21:47 +0000 | [diff] [blame] | 236 | stack = PyMem_REALLOC(state->data_stack, cursize); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 237 | if (!stack) { |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 238 | data_stack_dealloc(state); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 239 | return SRE_ERROR_MEMORY; |
| 240 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 241 | state->data_stack = (char *)stack; |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 242 | state->data_stack_size = cursize; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 243 | } |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 244 | return 0; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 247 | /* generate 8-bit version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 248 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 249 | #define SRE_CHAR Py_UCS1 |
| 250 | #define SIZEOF_SRE_CHAR 1 |
| 251 | #define SRE(F) sre_ucs1_##F |
Serhiy Storchaka | 8444ebb | 2013-10-26 11:18:42 +0300 | [diff] [blame] | 252 | #include "sre_lib.h" |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 253 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 254 | /* generate 16-bit unicode version */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 255 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 256 | #define SRE_CHAR Py_UCS2 |
| 257 | #define SIZEOF_SRE_CHAR 2 |
| 258 | #define SRE(F) sre_ucs2_##F |
Serhiy Storchaka | 8444ebb | 2013-10-26 11:18:42 +0300 | [diff] [blame] | 259 | #include "sre_lib.h" |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 260 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 261 | /* generate 32-bit unicode version */ |
| 262 | |
| 263 | #define SRE_CHAR Py_UCS4 |
| 264 | #define SIZEOF_SRE_CHAR 4 |
| 265 | #define SRE(F) sre_ucs4_##F |
Serhiy Storchaka | 8444ebb | 2013-10-26 11:18:42 +0300 | [diff] [blame] | 266 | #include "sre_lib.h" |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 267 | |
| 268 | /* -------------------------------------------------------------------- */ |
| 269 | /* factories and destructors */ |
| 270 | |
| 271 | /* see sre.h for object declarations */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 272 | static PyObject*pattern_new_match(PatternObject*, SRE_STATE*, int); |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 273 | static PyObject*pattern_scanner(PatternObject*, PyObject*, PyObject* kw); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 274 | |
| 275 | static PyObject * |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 276 | sre_codesize(PyObject* self, PyObject *unused) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 277 | { |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 278 | return PyLong_FromSize_t(sizeof(SRE_CODE)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 279 | } |
| 280 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 281 | static PyObject * |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 282 | sre_getlower(PyObject* self, PyObject* args) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 283 | { |
| 284 | int character, flags; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 285 | if (!PyArg_ParseTuple(args, "ii", &character, &flags)) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 286 | return NULL; |
| 287 | if (flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 288 | return Py_BuildValue("i", sre_lower_locale(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 289 | if (flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 290 | return Py_BuildValue("i", sre_lower_unicode(character)); |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 291 | return Py_BuildValue("i", sre_lower(character)); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 292 | } |
| 293 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 294 | LOCAL(void) |
| 295 | state_reset(SRE_STATE* state) |
| 296 | { |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 297 | /* FIXME: dynamic! */ |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 298 | /*memset(state->mark, 0, sizeof(*state->mark) * SRE_MARK_SIZE);*/ |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 299 | |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 300 | state->lastmark = -1; |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 301 | state->lastindex = -1; |
| 302 | |
| 303 | state->repeat = NULL; |
| 304 | |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 305 | data_stack_dealloc(state); |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 306 | } |
| 307 | |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 308 | static void* |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 309 | getstring(PyObject* string, Py_ssize_t* p_length, |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 310 | int* p_isbytes, int* p_charsize, |
Benjamin Peterson | 33d21a2 | 2012-03-07 14:59:13 -0600 | [diff] [blame] | 311 | Py_buffer *view) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 312 | { |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 313 | /* given a python object, return a data pointer, a length (in |
| 314 | characters), and a character size. return NULL if the object |
| 315 | is not a string (or not compatible) */ |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 316 | |
Alexandre Vassalotti | 70a2371 | 2007-10-14 02:05:51 +0000 | [diff] [blame] | 317 | /* Unicode objects do not support the buffer API. So, get the data |
| 318 | directly instead. */ |
| 319 | if (PyUnicode_Check(string)) { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 320 | if (PyUnicode_READY(string) == -1) |
| 321 | return NULL; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 322 | *p_length = PyUnicode_GET_LENGTH(string); |
Martin v. Löwis | c47adb0 | 2011-10-07 20:55:35 +0200 | [diff] [blame] | 323 | *p_charsize = PyUnicode_KIND(string); |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 324 | *p_isbytes = 0; |
| 325 | return PyUnicode_DATA(string); |
Alexandre Vassalotti | 70a2371 | 2007-10-14 02:05:51 +0000 | [diff] [blame] | 326 | } |
| 327 | |
Victor Stinner | 0058b86 | 2011-09-29 03:27:47 +0200 | [diff] [blame] | 328 | /* get pointer to byte string buffer */ |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 329 | if (PyObject_GetBuffer(string, view, PyBUF_SIMPLE) != 0) { |
| 330 | PyErr_SetString(PyExc_TypeError, "expected string or buffer"); |
| 331 | return NULL; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 332 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 333 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 334 | *p_length = view->len; |
| 335 | *p_charsize = 1; |
| 336 | *p_isbytes = 1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 337 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 338 | if (view->buf == NULL) { |
| 339 | PyErr_SetString(PyExc_ValueError, "Buffer is NULL"); |
| 340 | PyBuffer_Release(view); |
| 341 | view->buf = NULL; |
| 342 | return NULL; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 343 | } |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 344 | return view->buf; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 345 | } |
| 346 | |
| 347 | LOCAL(PyObject*) |
| 348 | state_init(SRE_STATE* state, PatternObject* pattern, PyObject* string, |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 349 | Py_ssize_t start, Py_ssize_t end) |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 350 | { |
| 351 | /* prepare state object */ |
| 352 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 353 | Py_ssize_t length; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 354 | int isbytes, charsize; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 355 | void* ptr; |
| 356 | |
| 357 | memset(state, 0, sizeof(SRE_STATE)); |
| 358 | |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 359 | state->lastmark = -1; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 360 | state->lastindex = -1; |
| 361 | |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 362 | state->buffer.buf = NULL; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 363 | ptr = getstring(string, &length, &isbytes, &charsize, &state->buffer); |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 364 | if (!ptr) |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 365 | goto err; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 366 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 367 | if (isbytes && pattern->isbytes == 0) { |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 368 | PyErr_SetString(PyExc_TypeError, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 369 | "can't use a string pattern on a bytes-like object"); |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 370 | goto err; |
| 371 | } |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 372 | if (!isbytes && pattern->isbytes > 0) { |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 373 | PyErr_SetString(PyExc_TypeError, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 374 | "can't use a bytes pattern on a string-like object"); |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 375 | goto err; |
| 376 | } |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 377 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 378 | /* adjust boundaries */ |
| 379 | if (start < 0) |
| 380 | start = 0; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 381 | else if (start > length) |
| 382 | start = length; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 383 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 384 | if (end < 0) |
| 385 | end = 0; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 386 | else if (end > length) |
| 387 | end = length; |
| 388 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 389 | state->isbytes = isbytes; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 390 | state->charsize = charsize; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 391 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 392 | state->beginning = ptr; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 393 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 394 | state->start = (void*) ((char*) ptr + start * state->charsize); |
| 395 | state->end = (void*) ((char*) ptr + end * state->charsize); |
| 396 | |
| 397 | Py_INCREF(string); |
| 398 | state->string = string; |
| 399 | state->pos = start; |
| 400 | state->endpos = end; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 401 | |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 402 | if (pattern->flags & SRE_FLAG_LOCALE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 403 | state->lower = sre_lower_locale; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 404 | else if (pattern->flags & SRE_FLAG_UNICODE) |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 405 | state->lower = sre_lower_unicode; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 406 | else |
Fredrik Lundh | b389df3 | 2000-06-29 12:48:37 +0000 | [diff] [blame] | 407 | state->lower = sre_lower; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 408 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 409 | return string; |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 410 | err: |
| 411 | if (state->buffer.buf) |
| 412 | PyBuffer_Release(&state->buffer); |
| 413 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 414 | } |
| 415 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 416 | LOCAL(void) |
| 417 | state_fini(SRE_STATE* state) |
| 418 | { |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 419 | if (state->buffer.buf) |
| 420 | PyBuffer_Release(&state->buffer); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 421 | Py_XDECREF(state->string); |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 422 | data_stack_dealloc(state); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 423 | } |
| 424 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 425 | /* calculate offset from start of string */ |
| 426 | #define STATE_OFFSET(state, member)\ |
| 427 | (((char*)(member) - (char*)(state)->beginning) / (state)->charsize) |
| 428 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 429 | LOCAL(PyObject*) |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 430 | getslice(int isbytes, const void *ptr, |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 431 | PyObject* string, Py_ssize_t start, Py_ssize_t end) |
| 432 | { |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 433 | if (isbytes) { |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 434 | if (PyBytes_CheckExact(string) && |
| 435 | start == 0 && end == PyBytes_GET_SIZE(string)) { |
| 436 | Py_INCREF(string); |
| 437 | return string; |
| 438 | } |
| 439 | return PyBytes_FromStringAndSize( |
| 440 | (const char *)ptr + start, end - start); |
| 441 | } |
| 442 | else { |
| 443 | return PyUnicode_Substring(string, start, end); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | LOCAL(PyObject*) |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 448 | state_getslice(SRE_STATE* state, Py_ssize_t index, PyObject* string, int empty) |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 449 | { |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 450 | Py_ssize_t i, j; |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 451 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 452 | index = (index - 1) * 2; |
| 453 | |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 454 | if (string == Py_None || index >= state->lastmark || !state->mark[index] || !state->mark[index+1]) { |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 455 | if (empty) |
| 456 | /* want empty string */ |
| 457 | i = j = 0; |
| 458 | else { |
| 459 | Py_INCREF(Py_None); |
| 460 | return Py_None; |
| 461 | } |
Fredrik Lundh | 5810064 | 2000-08-09 09:14:35 +0000 | [diff] [blame] | 462 | } else { |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 463 | i = STATE_OFFSET(state, state->mark[index]); |
| 464 | j = STATE_OFFSET(state, state->mark[index+1]); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 465 | } |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 466 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 467 | return getslice(state->isbytes, state->beginning, string, i, j); |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 468 | } |
| 469 | |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 470 | static void |
| 471 | pattern_error(int status) |
| 472 | { |
| 473 | switch (status) { |
| 474 | case SRE_ERROR_RECURSION_LIMIT: |
| 475 | PyErr_SetString( |
| 476 | PyExc_RuntimeError, |
| 477 | "maximum recursion limit exceeded" |
| 478 | ); |
| 479 | break; |
| 480 | case SRE_ERROR_MEMORY: |
| 481 | PyErr_NoMemory(); |
| 482 | break; |
Christian Heimes | 2380ac7 | 2008-01-09 00:17:24 +0000 | [diff] [blame] | 483 | case SRE_ERROR_INTERRUPTED: |
| 484 | /* An exception has already been raised, so let it fly */ |
| 485 | break; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 486 | default: |
| 487 | /* other error codes indicate compiler/engine bugs */ |
| 488 | PyErr_SetString( |
| 489 | PyExc_RuntimeError, |
| 490 | "internal error in regular expression engine" |
| 491 | ); |
| 492 | } |
| 493 | } |
| 494 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 495 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 496 | pattern_dealloc(PatternObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 497 | { |
Raymond Hettinger | 027bb63 | 2004-05-31 03:09:25 +0000 | [diff] [blame] | 498 | if (self->weakreflist != NULL) |
| 499 | PyObject_ClearWeakRefs((PyObject *) self); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 500 | Py_XDECREF(self->pattern); |
| 501 | Py_XDECREF(self->groupindex); |
Fredrik Lundh | 6f5cba6 | 2001-01-16 07:05:29 +0000 | [diff] [blame] | 502 | Py_XDECREF(self->indexgroup); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 503 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 504 | } |
| 505 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 506 | LOCAL(Py_ssize_t) |
| 507 | sre_match(SRE_STATE* state, SRE_CODE* pattern) |
| 508 | { |
| 509 | if (state->charsize == 1) |
| 510 | return sre_ucs1_match(state, pattern); |
| 511 | if (state->charsize == 2) |
| 512 | return sre_ucs2_match(state, pattern); |
| 513 | assert(state->charsize == 4); |
| 514 | return sre_ucs4_match(state, pattern); |
| 515 | } |
| 516 | |
| 517 | LOCAL(Py_ssize_t) |
| 518 | sre_search(SRE_STATE* state, SRE_CODE* pattern) |
| 519 | { |
| 520 | if (state->charsize == 1) |
| 521 | return sre_ucs1_search(state, pattern); |
| 522 | if (state->charsize == 2) |
| 523 | return sre_ucs2_search(state, pattern); |
| 524 | assert(state->charsize == 4); |
| 525 | return sre_ucs4_search(state, pattern); |
| 526 | } |
| 527 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 528 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 529 | pattern_match(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 530 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 531 | SRE_STATE state; |
Victor Stinner | 7a6d7cf | 2012-10-31 00:37:41 +0100 | [diff] [blame] | 532 | Py_ssize_t status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 533 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 534 | PyObject* string; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 535 | Py_ssize_t start = 0; |
| 536 | Py_ssize_t end = PY_SSIZE_T_MAX; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 537 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 538 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|nn:match", kwlist, |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 539 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 540 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 541 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 542 | string = state_init(&state, self, string, start, end); |
| 543 | if (!string) |
| 544 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 545 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 546 | state.ptr = state.start; |
| 547 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 548 | TRACE(("|%p|%p|MATCH\n", PatternObject_GetCode(self), state.ptr)); |
| 549 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 550 | status = sre_match(&state, PatternObject_GetCode(self)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 551 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 552 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 553 | if (PyErr_Occurred()) |
| 554 | return NULL; |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 555 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 556 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 557 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 558 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 562 | pattern_search(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 563 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 564 | SRE_STATE state; |
| 565 | int status; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 566 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 567 | PyObject* string; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 568 | Py_ssize_t start = 0; |
| 569 | Py_ssize_t end = PY_SSIZE_T_MAX; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 570 | static char* kwlist[] = { "pattern", "pos", "endpos", NULL }; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 571 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|nn:search", kwlist, |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 572 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 573 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 574 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 575 | string = state_init(&state, self, string, start, end); |
| 576 | if (!string) |
| 577 | return NULL; |
| 578 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 579 | TRACE(("|%p|%p|SEARCH\n", PatternObject_GetCode(self), state.ptr)); |
| 580 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 581 | status = sre_search(&state, PatternObject_GetCode(self)); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 582 | |
Fredrik Lundh | 7898c3e | 2000-08-07 20:59:04 +0000 | [diff] [blame] | 583 | TRACE(("|%p|%p|END\n", PatternObject_GetCode(self), state.ptr)); |
| 584 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 585 | state_fini(&state); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 586 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 587 | if (PyErr_Occurred()) |
| 588 | return NULL; |
| 589 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 590 | return pattern_new_match(self, &state, status); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | static PyObject* |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 594 | call(char* module, char* function, PyObject* args) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 595 | { |
| 596 | PyObject* name; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 597 | PyObject* mod; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 598 | PyObject* func; |
| 599 | PyObject* result; |
| 600 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 601 | if (!args) |
| 602 | return NULL; |
Neal Norwitz | fe53713 | 2007-08-26 03:55:15 +0000 | [diff] [blame] | 603 | name = PyUnicode_FromString(module); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 604 | if (!name) |
| 605 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 606 | mod = PyImport_Import(name); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 607 | Py_DECREF(name); |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 608 | if (!mod) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 609 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 610 | func = PyObject_GetAttrString(mod, function); |
| 611 | Py_DECREF(mod); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 612 | if (!func) |
| 613 | return NULL; |
| 614 | result = PyObject_CallObject(func, args); |
| 615 | Py_DECREF(func); |
| 616 | Py_DECREF(args); |
| 617 | return result; |
| 618 | } |
| 619 | |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 620 | #ifdef USE_BUILTIN_COPY |
| 621 | static int |
| 622 | deepcopy(PyObject** object, PyObject* memo) |
| 623 | { |
| 624 | PyObject* copy; |
| 625 | |
| 626 | copy = call( |
| 627 | "copy", "deepcopy", |
Raymond Hettinger | 8ae4689 | 2003-10-12 19:09:37 +0000 | [diff] [blame] | 628 | PyTuple_Pack(2, *object, memo) |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 629 | ); |
| 630 | if (!copy) |
| 631 | return 0; |
| 632 | |
| 633 | Py_DECREF(*object); |
| 634 | *object = copy; |
| 635 | |
| 636 | return 1; /* success */ |
| 637 | } |
| 638 | #endif |
| 639 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 640 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 641 | pattern_findall(PatternObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 642 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 643 | SRE_STATE state; |
| 644 | PyObject* list; |
Victor Stinner | 7a6d7cf | 2012-10-31 00:37:41 +0100 | [diff] [blame] | 645 | Py_ssize_t status; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 646 | Py_ssize_t i, b, e; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 647 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 648 | PyObject* string; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 649 | Py_ssize_t start = 0; |
| 650 | Py_ssize_t end = PY_SSIZE_T_MAX; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 651 | static char* kwlist[] = { "source", "pos", "endpos", NULL }; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 652 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|nn:findall", kwlist, |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 653 | &string, &start, &end)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 654 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 655 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 656 | string = state_init(&state, self, string, start, end); |
| 657 | if (!string) |
| 658 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 659 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 660 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 661 | if (!list) { |
| 662 | state_fini(&state); |
| 663 | return NULL; |
| 664 | } |
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 | while (state.start <= state.end) { |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 667 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 668 | PyObject* item; |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 669 | |
Fredrik Lundh | ebc37b2 | 2000-10-28 19:30:41 +0000 | [diff] [blame] | 670 | state_reset(&state); |
| 671 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 672 | state.ptr = state.start; |
| 673 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 674 | status = sre_search(&state, PatternObject_GetCode(self)); |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 675 | if (PyErr_Occurred()) |
| 676 | goto error; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 677 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 678 | if (status <= 0) { |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 679 | if (status == 0) |
| 680 | break; |
Fredrik Lundh | 96ab465 | 2000-08-03 16:29:50 +0000 | [diff] [blame] | 681 | pattern_error(status); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 682 | goto error; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 683 | } |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 684 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 685 | /* don't bother to build a match object */ |
| 686 | switch (self->groups) { |
| 687 | case 0: |
| 688 | b = STATE_OFFSET(&state, state.start); |
| 689 | e = STATE_OFFSET(&state, state.ptr); |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 690 | item = getslice(state.isbytes, state.beginning, |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 691 | string, b, e); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 692 | if (!item) |
| 693 | goto error; |
| 694 | break; |
| 695 | case 1: |
| 696 | item = state_getslice(&state, 1, string, 1); |
| 697 | if (!item) |
| 698 | goto error; |
| 699 | break; |
| 700 | default: |
| 701 | item = PyTuple_New(self->groups); |
| 702 | if (!item) |
| 703 | goto error; |
| 704 | for (i = 0; i < self->groups; i++) { |
| 705 | PyObject* o = state_getslice(&state, i+1, string, 1); |
| 706 | if (!o) { |
| 707 | Py_DECREF(item); |
| 708 | goto error; |
| 709 | } |
| 710 | PyTuple_SET_ITEM(item, i, o); |
| 711 | } |
| 712 | break; |
| 713 | } |
| 714 | |
| 715 | status = PyList_Append(list, item); |
| 716 | Py_DECREF(item); |
| 717 | if (status < 0) |
| 718 | goto error; |
| 719 | |
| 720 | if (state.ptr == state.start) |
| 721 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 722 | else |
| 723 | state.start = state.ptr; |
| 724 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 725 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 726 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 727 | state_fini(&state); |
| 728 | return list; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 729 | |
| 730 | error: |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 731 | Py_DECREF(list); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 732 | state_fini(&state); |
| 733 | return NULL; |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 734 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 735 | } |
| 736 | |
Fredrik Lundh | 703ce81 | 2001-10-24 22:16:30 +0000 | [diff] [blame] | 737 | static PyObject* |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 738 | pattern_finditer(PatternObject* pattern, PyObject* args, PyObject* kw) |
Fredrik Lundh | 703ce81 | 2001-10-24 22:16:30 +0000 | [diff] [blame] | 739 | { |
| 740 | PyObject* scanner; |
| 741 | PyObject* search; |
| 742 | PyObject* iterator; |
| 743 | |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 744 | scanner = pattern_scanner(pattern, args, kw); |
Fredrik Lundh | 703ce81 | 2001-10-24 22:16:30 +0000 | [diff] [blame] | 745 | if (!scanner) |
| 746 | return NULL; |
| 747 | |
| 748 | search = PyObject_GetAttrString(scanner, "search"); |
| 749 | Py_DECREF(scanner); |
| 750 | if (!search) |
| 751 | return NULL; |
| 752 | |
| 753 | iterator = PyCallIter_New(search, Py_None); |
| 754 | Py_DECREF(search); |
| 755 | |
| 756 | return iterator; |
| 757 | } |
Fredrik Lundh | 703ce81 | 2001-10-24 22:16:30 +0000 | [diff] [blame] | 758 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 759 | static PyObject* |
| 760 | pattern_split(PatternObject* self, PyObject* args, PyObject* kw) |
| 761 | { |
| 762 | SRE_STATE state; |
| 763 | PyObject* list; |
| 764 | PyObject* item; |
Victor Stinner | 7a6d7cf | 2012-10-31 00:37:41 +0100 | [diff] [blame] | 765 | Py_ssize_t status; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 766 | Py_ssize_t n; |
| 767 | Py_ssize_t i; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 768 | void* last; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 769 | |
| 770 | PyObject* string; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 771 | Py_ssize_t maxsplit = 0; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 772 | static char* kwlist[] = { "source", "maxsplit", NULL }; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 773 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|n:split", kwlist, |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 774 | &string, &maxsplit)) |
| 775 | return NULL; |
| 776 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 777 | string = state_init(&state, self, string, 0, PY_SSIZE_T_MAX); |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 778 | if (!string) |
| 779 | return NULL; |
| 780 | |
| 781 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 782 | if (!list) { |
| 783 | state_fini(&state); |
| 784 | return NULL; |
| 785 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 786 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 787 | n = 0; |
| 788 | last = state.start; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 789 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 790 | while (!maxsplit || n < maxsplit) { |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 791 | |
| 792 | state_reset(&state); |
| 793 | |
| 794 | state.ptr = state.start; |
| 795 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 796 | status = sre_search(&state, PatternObject_GetCode(self)); |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 797 | if (PyErr_Occurred()) |
| 798 | goto error; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 799 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 800 | if (status <= 0) { |
| 801 | if (status == 0) |
| 802 | break; |
| 803 | pattern_error(status); |
| 804 | goto error; |
| 805 | } |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 806 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 807 | if (state.start == state.ptr) { |
| 808 | if (last == state.end) |
| 809 | break; |
| 810 | /* skip one character */ |
| 811 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 812 | continue; |
| 813 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 814 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 815 | /* get segment before this match */ |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 816 | item = getslice(state.isbytes, state.beginning, |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 817 | string, STATE_OFFSET(&state, last), |
| 818 | STATE_OFFSET(&state, state.start) |
| 819 | ); |
| 820 | if (!item) |
| 821 | goto error; |
| 822 | status = PyList_Append(list, item); |
| 823 | Py_DECREF(item); |
| 824 | if (status < 0) |
| 825 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 826 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 827 | /* add groups (if any) */ |
| 828 | for (i = 0; i < self->groups; i++) { |
| 829 | item = state_getslice(&state, i+1, string, 0); |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 830 | if (!item) |
| 831 | goto error; |
| 832 | status = PyList_Append(list, item); |
| 833 | Py_DECREF(item); |
| 834 | if (status < 0) |
| 835 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 836 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 837 | |
| 838 | n = n + 1; |
| 839 | |
| 840 | last = state.start = state.ptr; |
| 841 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 842 | } |
| 843 | |
Fredrik Lundh | f864aa8 | 2001-10-22 06:01:56 +0000 | [diff] [blame] | 844 | /* get segment following last match (even if empty) */ |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 845 | item = getslice(state.isbytes, state.beginning, |
Fredrik Lundh | f864aa8 | 2001-10-22 06:01:56 +0000 | [diff] [blame] | 846 | string, STATE_OFFSET(&state, last), state.endpos |
| 847 | ); |
| 848 | if (!item) |
| 849 | goto error; |
| 850 | status = PyList_Append(list, item); |
| 851 | Py_DECREF(item); |
| 852 | if (status < 0) |
| 853 | goto error; |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 854 | |
| 855 | state_fini(&state); |
| 856 | return list; |
| 857 | |
| 858 | error: |
| 859 | Py_DECREF(list); |
| 860 | state_fini(&state); |
| 861 | return NULL; |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 862 | |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 863 | } |
Fredrik Lundh | 971e78b | 2001-10-20 17:48:46 +0000 | [diff] [blame] | 864 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 865 | static PyObject* |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 866 | pattern_subx(PatternObject* self, PyObject* ptemplate, PyObject* string, |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 867 | Py_ssize_t count, Py_ssize_t subn) |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 868 | { |
| 869 | SRE_STATE state; |
| 870 | PyObject* list; |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 871 | PyObject* joiner; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 872 | PyObject* item; |
| 873 | PyObject* filter; |
| 874 | PyObject* args; |
| 875 | PyObject* match; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 876 | void* ptr; |
Victor Stinner | 7a6d7cf | 2012-10-31 00:37:41 +0100 | [diff] [blame] | 877 | Py_ssize_t status; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 878 | Py_ssize_t n; |
| 879 | Py_ssize_t i, b, e; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 880 | int isbytes, charsize; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 881 | int filter_is_callable; |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 882 | Py_buffer view; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 883 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 884 | if (PyCallable_Check(ptemplate)) { |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 885 | /* sub/subn takes either a function or a template */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 886 | filter = ptemplate; |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 887 | Py_INCREF(filter); |
| 888 | filter_is_callable = 1; |
| 889 | } else { |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 890 | /* if not callable, check if it's a literal string */ |
| 891 | int literal; |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 892 | view.buf = NULL; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 893 | ptr = getstring(ptemplate, &n, &isbytes, &charsize, &view); |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 894 | b = charsize; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 895 | if (ptr) { |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 896 | if (charsize == 1) |
| 897 | literal = memchr(ptr, '\\', n) == NULL; |
| 898 | else |
| 899 | literal = PyUnicode_FindChar(ptemplate, '\\', 0, n, 1) == -1; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 900 | } else { |
| 901 | PyErr_Clear(); |
| 902 | literal = 0; |
| 903 | } |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 904 | if (view.buf) |
| 905 | PyBuffer_Release(&view); |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 906 | if (literal) { |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 907 | filter = ptemplate; |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 908 | Py_INCREF(filter); |
| 909 | filter_is_callable = 0; |
| 910 | } else { |
| 911 | /* not a literal; hand it over to the template compiler */ |
| 912 | filter = call( |
Thomas Wouters | 9ada3d6 | 2006-04-21 09:47:09 +0000 | [diff] [blame] | 913 | SRE_PY_MODULE, "_subx", |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 914 | PyTuple_Pack(2, self, ptemplate) |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 915 | ); |
| 916 | if (!filter) |
| 917 | return NULL; |
| 918 | filter_is_callable = PyCallable_Check(filter); |
| 919 | } |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 920 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 921 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 922 | string = state_init(&state, self, string, 0, PY_SSIZE_T_MAX); |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 923 | if (!string) { |
| 924 | Py_DECREF(filter); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 925 | return NULL; |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 926 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 927 | |
| 928 | list = PyList_New(0); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 929 | if (!list) { |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 930 | Py_DECREF(filter); |
Fredrik Lundh | 1296a8d | 2001-10-21 18:04:11 +0000 | [diff] [blame] | 931 | state_fini(&state); |
| 932 | return NULL; |
| 933 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 934 | |
| 935 | n = i = 0; |
| 936 | |
| 937 | while (!count || n < count) { |
| 938 | |
| 939 | state_reset(&state); |
| 940 | |
| 941 | state.ptr = state.start; |
| 942 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 943 | status = sre_search(&state, PatternObject_GetCode(self)); |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 944 | if (PyErr_Occurred()) |
| 945 | goto error; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 946 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 947 | if (status <= 0) { |
| 948 | if (status == 0) |
| 949 | break; |
| 950 | pattern_error(status); |
| 951 | goto error; |
| 952 | } |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 953 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 954 | b = STATE_OFFSET(&state, state.start); |
| 955 | e = STATE_OFFSET(&state, state.ptr); |
| 956 | |
| 957 | if (i < b) { |
| 958 | /* get segment before this match */ |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 959 | item = getslice(state.isbytes, state.beginning, |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 960 | string, i, b); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 961 | if (!item) |
| 962 | goto error; |
| 963 | status = PyList_Append(list, item); |
| 964 | Py_DECREF(item); |
| 965 | if (status < 0) |
| 966 | goto error; |
| 967 | |
| 968 | } else if (i == b && i == e && n > 0) |
| 969 | /* ignore empty match on latest position */ |
| 970 | goto next; |
| 971 | |
| 972 | if (filter_is_callable) { |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 973 | /* pass match object through filter */ |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 974 | match = pattern_new_match(self, &state, 1); |
| 975 | if (!match) |
| 976 | goto error; |
Raymond Hettinger | 8ae4689 | 2003-10-12 19:09:37 +0000 | [diff] [blame] | 977 | args = PyTuple_Pack(1, match); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 978 | if (!args) { |
Guido van Rossum | 4e17384 | 2001-12-07 04:25:10 +0000 | [diff] [blame] | 979 | Py_DECREF(match); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 980 | goto error; |
| 981 | } |
| 982 | item = PyObject_CallObject(filter, args); |
| 983 | Py_DECREF(args); |
| 984 | Py_DECREF(match); |
| 985 | if (!item) |
| 986 | goto error; |
| 987 | } else { |
| 988 | /* filter is literal string */ |
| 989 | item = filter; |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 990 | Py_INCREF(item); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | /* add to list */ |
Fredrik Lundh | 6de22ef | 2001-10-22 21:18:08 +0000 | [diff] [blame] | 994 | if (item != Py_None) { |
| 995 | status = PyList_Append(list, item); |
| 996 | Py_DECREF(item); |
| 997 | if (status < 0) |
| 998 | goto error; |
| 999 | } |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1000 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1001 | i = e; |
| 1002 | n = n + 1; |
| 1003 | |
| 1004 | next: |
| 1005 | /* move on */ |
| 1006 | if (state.ptr == state.start) |
| 1007 | state.start = (void*) ((char*) state.ptr + state.charsize); |
| 1008 | else |
| 1009 | state.start = state.ptr; |
| 1010 | |
| 1011 | } |
| 1012 | |
| 1013 | /* get segment following last match */ |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 1014 | if (i < state.endpos) { |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1015 | item = getslice(state.isbytes, state.beginning, |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1016 | string, i, state.endpos); |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 1017 | if (!item) |
| 1018 | goto error; |
| 1019 | status = PyList_Append(list, item); |
| 1020 | Py_DECREF(item); |
| 1021 | if (status < 0) |
| 1022 | goto error; |
| 1023 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1024 | |
| 1025 | state_fini(&state); |
| 1026 | |
Guido van Rossum | 4e17384 | 2001-12-07 04:25:10 +0000 | [diff] [blame] | 1027 | Py_DECREF(filter); |
| 1028 | |
Fredrik Lundh | dac5849 | 2001-10-21 21:48:30 +0000 | [diff] [blame] | 1029 | /* convert list to single string (also removes list) */ |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1030 | joiner = getslice(state.isbytes, state.beginning, string, 0, 0); |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1031 | if (!joiner) { |
| 1032 | Py_DECREF(list); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1033 | return NULL; |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1034 | } |
| 1035 | if (PyList_GET_SIZE(list) == 0) { |
| 1036 | Py_DECREF(list); |
| 1037 | item = joiner; |
| 1038 | } |
| 1039 | else { |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1040 | if (state.isbytes) |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1041 | item = _PyBytes_Join(joiner, list); |
| 1042 | else |
| 1043 | item = PyUnicode_Join(joiner, list); |
| 1044 | Py_DECREF(joiner); |
Brett Cannon | baced56 | 2013-10-18 14:03:16 -0400 | [diff] [blame] | 1045 | Py_DECREF(list); |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1046 | if (!item) |
| 1047 | return NULL; |
| 1048 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1049 | |
| 1050 | if (subn) |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 1051 | return Py_BuildValue("Nn", item, n); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1052 | |
| 1053 | return item; |
| 1054 | |
| 1055 | error: |
| 1056 | Py_DECREF(list); |
| 1057 | state_fini(&state); |
Fredrik Lundh | 82b2307 | 2001-12-09 16:13:15 +0000 | [diff] [blame] | 1058 | Py_DECREF(filter); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1059 | return NULL; |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1060 | |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1061 | } |
| 1062 | |
| 1063 | static PyObject* |
| 1064 | pattern_sub(PatternObject* self, PyObject* args, PyObject* kw) |
| 1065 | { |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1066 | PyObject* ptemplate; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1067 | PyObject* string; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1068 | Py_ssize_t count = 0; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 1069 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1070 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|n:sub", kwlist, |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1071 | &ptemplate, &string, &count)) |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1072 | return NULL; |
| 1073 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1074 | return pattern_subx(self, ptemplate, string, count, 0); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1075 | } |
| 1076 | |
| 1077 | static PyObject* |
| 1078 | pattern_subn(PatternObject* self, PyObject* args, PyObject* kw) |
| 1079 | { |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1080 | PyObject* ptemplate; |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1081 | PyObject* string; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1082 | Py_ssize_t count = 0; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 1083 | static char* kwlist[] = { "repl", "string", "count", NULL }; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1084 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OO|n:subn", kwlist, |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1085 | &ptemplate, &string, &count)) |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1086 | return NULL; |
| 1087 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1088 | return pattern_subx(self, ptemplate, string, count, 1); |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1089 | } |
Fredrik Lundh | bec95b9 | 2001-10-21 16:47:57 +0000 | [diff] [blame] | 1090 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1091 | static PyObject* |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1092 | pattern_copy(PatternObject* self, PyObject *unused) |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1093 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1094 | #ifdef USE_BUILTIN_COPY |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1095 | PatternObject* copy; |
| 1096 | int offset; |
| 1097 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1098 | copy = PyObject_NEW_VAR(PatternObject, &Pattern_Type, self->codesize); |
| 1099 | if (!copy) |
| 1100 | return NULL; |
| 1101 | |
| 1102 | offset = offsetof(PatternObject, groups); |
| 1103 | |
| 1104 | Py_XINCREF(self->groupindex); |
| 1105 | Py_XINCREF(self->indexgroup); |
| 1106 | Py_XINCREF(self->pattern); |
| 1107 | |
| 1108 | memcpy((char*) copy + offset, (char*) self + offset, |
| 1109 | sizeof(PatternObject) + self->codesize * sizeof(SRE_CODE) - offset); |
Raymond Hettinger | 027bb63 | 2004-05-31 03:09:25 +0000 | [diff] [blame] | 1110 | copy->weakreflist = NULL; |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1111 | |
| 1112 | return (PyObject*) copy; |
| 1113 | #else |
| 1114 | PyErr_SetString(PyExc_TypeError, "cannot copy this pattern object"); |
| 1115 | return NULL; |
| 1116 | #endif |
| 1117 | } |
| 1118 | |
| 1119 | static PyObject* |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1120 | pattern_deepcopy(PatternObject* self, PyObject* memo) |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1121 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1122 | #ifdef USE_BUILTIN_COPY |
| 1123 | PatternObject* copy; |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1124 | |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1125 | copy = (PatternObject*) pattern_copy(self); |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1126 | if (!copy) |
| 1127 | return NULL; |
| 1128 | |
| 1129 | if (!deepcopy(©->groupindex, memo) || |
| 1130 | !deepcopy(©->indexgroup, memo) || |
| 1131 | !deepcopy(©->pattern, memo)) { |
| 1132 | Py_DECREF(copy); |
| 1133 | return NULL; |
| 1134 | } |
| 1135 | |
| 1136 | #else |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1137 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this pattern object"); |
| 1138 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 1139 | #endif |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 1140 | } |
| 1141 | |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1142 | PyDoc_STRVAR(pattern_match_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 1143 | "match(string[, pos[, endpos]]) -> match object or None.\n\ |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1144 | Matches zero or more characters at the beginning of the string"); |
| 1145 | |
| 1146 | PyDoc_STRVAR(pattern_search_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 1147 | "search(string[, pos[, endpos]]) -> match object or None.\n\ |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1148 | Scan through string looking for a match, and return a corresponding\n\ |
Andrew Svetlov | 0b64c14 | 2012-12-25 18:48:54 +0200 | [diff] [blame] | 1149 | match object instance. Return None if no position in the string matches."); |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1150 | |
| 1151 | PyDoc_STRVAR(pattern_split_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 1152 | "split(string[, maxsplit = 0]) -> list.\n\ |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1153 | Split string by the occurrences of pattern."); |
| 1154 | |
| 1155 | PyDoc_STRVAR(pattern_findall_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 1156 | "findall(string[, pos[, endpos]]) -> list.\n\ |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1157 | Return a list of all non-overlapping matches of pattern in string."); |
| 1158 | |
| 1159 | PyDoc_STRVAR(pattern_finditer_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 1160 | "finditer(string[, pos[, endpos]]) -> iterator.\n\ |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1161 | Return an iterator over all non-overlapping matches for the \n\ |
| 1162 | RE pattern in string. For each match, the iterator returns a\n\ |
| 1163 | match object."); |
| 1164 | |
| 1165 | PyDoc_STRVAR(pattern_sub_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 1166 | "sub(repl, string[, count = 0]) -> newstring.\n\ |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1167 | Return the string obtained by replacing the leftmost non-overlapping\n\ |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1168 | occurrences of pattern in string by the replacement repl."); |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1169 | |
| 1170 | PyDoc_STRVAR(pattern_subn_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 1171 | "subn(repl, string[, count = 0]) -> (newstring, number of subs)\n\ |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1172 | Return the tuple (new_string, number_of_subs_made) found by replacing\n\ |
| 1173 | the leftmost non-overlapping occurrences of pattern with the\n\ |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1174 | replacement repl."); |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1175 | |
| 1176 | PyDoc_STRVAR(pattern_doc, "Compiled regular expression objects"); |
| 1177 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1178 | static PyMethodDef pattern_methods[] = { |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1179 | {"match", (PyCFunction) pattern_match, METH_VARARGS|METH_KEYWORDS, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1180 | pattern_match_doc}, |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1181 | {"search", (PyCFunction) pattern_search, METH_VARARGS|METH_KEYWORDS, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1182 | pattern_search_doc}, |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1183 | {"sub", (PyCFunction) pattern_sub, METH_VARARGS|METH_KEYWORDS, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1184 | pattern_sub_doc}, |
Raymond Hettinger | 9447874 | 2004-09-24 04:31:19 +0000 | [diff] [blame] | 1185 | {"subn", (PyCFunction) pattern_subn, METH_VARARGS|METH_KEYWORDS, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1186 | pattern_subn_doc}, |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1187 | {"split", (PyCFunction) pattern_split, METH_VARARGS|METH_KEYWORDS, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1188 | pattern_split_doc}, |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 1189 | {"findall", (PyCFunction) pattern_findall, METH_VARARGS|METH_KEYWORDS, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1190 | pattern_findall_doc}, |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 1191 | {"finditer", (PyCFunction) pattern_finditer, METH_VARARGS|METH_KEYWORDS, |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1192 | pattern_finditer_doc}, |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 1193 | {"scanner", (PyCFunction) pattern_scanner, METH_VARARGS|METH_KEYWORDS}, |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1194 | {"__copy__", (PyCFunction) pattern_copy, METH_NOARGS}, |
| 1195 | {"__deepcopy__", (PyCFunction) pattern_deepcopy, METH_O}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1196 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1197 | }; |
| 1198 | |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 1199 | #define PAT_OFF(x) offsetof(PatternObject, x) |
| 1200 | static PyMemberDef pattern_members[] = { |
| 1201 | {"pattern", T_OBJECT, PAT_OFF(pattern), READONLY}, |
| 1202 | {"flags", T_INT, PAT_OFF(flags), READONLY}, |
| 1203 | {"groups", T_PYSSIZET, PAT_OFF(groups), READONLY}, |
| 1204 | {"groupindex", T_OBJECT, PAT_OFF(groupindex), READONLY}, |
| 1205 | {NULL} /* Sentinel */ |
| 1206 | }; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1207 | |
Neal Norwitz | 57c179c | 2006-03-22 07:18:02 +0000 | [diff] [blame] | 1208 | static PyTypeObject Pattern_Type = { |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 1209 | PyVarObject_HEAD_INIT(NULL, 0) |
| 1210 | "_" SRE_MODULE ".SRE_Pattern", |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1211 | sizeof(PatternObject), sizeof(SRE_CODE), |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1212 | (destructor)pattern_dealloc, /* tp_dealloc */ |
| 1213 | 0, /* tp_print */ |
| 1214 | 0, /* tp_getattr */ |
| 1215 | 0, /* tp_setattr */ |
| 1216 | 0, /* tp_reserved */ |
| 1217 | 0, /* tp_repr */ |
| 1218 | 0, /* tp_as_number */ |
| 1219 | 0, /* tp_as_sequence */ |
| 1220 | 0, /* tp_as_mapping */ |
| 1221 | 0, /* tp_hash */ |
| 1222 | 0, /* tp_call */ |
| 1223 | 0, /* tp_str */ |
| 1224 | 0, /* tp_getattro */ |
| 1225 | 0, /* tp_setattro */ |
| 1226 | 0, /* tp_as_buffer */ |
| 1227 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
| 1228 | pattern_doc, /* tp_doc */ |
| 1229 | 0, /* tp_traverse */ |
| 1230 | 0, /* tp_clear */ |
| 1231 | 0, /* tp_richcompare */ |
| 1232 | offsetof(PatternObject, weakreflist), /* tp_weaklistoffset */ |
| 1233 | 0, /* tp_iter */ |
| 1234 | 0, /* tp_iternext */ |
| 1235 | pattern_methods, /* tp_methods */ |
| 1236 | pattern_members, /* tp_members */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1237 | }; |
| 1238 | |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1239 | static int _validate(PatternObject *self); /* Forward */ |
| 1240 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1241 | static PyObject * |
| 1242 | _compile(PyObject* self_, PyObject* args) |
| 1243 | { |
| 1244 | /* "compile" pattern descriptor to pattern object */ |
| 1245 | |
| 1246 | PatternObject* self; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1247 | Py_ssize_t i, n; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1248 | |
| 1249 | PyObject* pattern; |
| 1250 | int flags = 0; |
| 1251 | PyObject* code; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1252 | Py_ssize_t groups = 0; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1253 | PyObject* groupindex = NULL; |
| 1254 | PyObject* indexgroup = NULL; |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 1255 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1256 | if (!PyArg_ParseTuple(args, "OiO!|nOO", &pattern, &flags, |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1257 | &PyList_Type, &code, &groups, |
| 1258 | &groupindex, &indexgroup)) |
| 1259 | return NULL; |
| 1260 | |
| 1261 | n = PyList_GET_SIZE(code); |
Christian Heimes | 587c2bf | 2008-01-19 16:21:02 +0000 | [diff] [blame] | 1262 | /* coverity[ampersand_in_size] */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1263 | self = PyObject_NEW_VAR(PatternObject, &Pattern_Type, n); |
| 1264 | if (!self) |
| 1265 | return NULL; |
Antoine Pitrou | 82feb1f | 2010-01-14 17:34:48 +0000 | [diff] [blame] | 1266 | self->weakreflist = NULL; |
| 1267 | self->pattern = NULL; |
| 1268 | self->groupindex = NULL; |
| 1269 | self->indexgroup = NULL; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1270 | |
| 1271 | self->codesize = n; |
| 1272 | |
| 1273 | for (i = 0; i < n; i++) { |
| 1274 | PyObject *o = PyList_GET_ITEM(code, i); |
Guido van Rossum | ddefaf3 | 2007-01-14 03:31:43 +0000 | [diff] [blame] | 1275 | unsigned long value = PyLong_AsUnsignedLong(o); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1276 | self->code[i] = (SRE_CODE) value; |
| 1277 | if ((unsigned long) self->code[i] != value) { |
| 1278 | PyErr_SetString(PyExc_OverflowError, |
| 1279 | "regular expression code size limit exceeded"); |
| 1280 | break; |
| 1281 | } |
| 1282 | } |
| 1283 | |
| 1284 | if (PyErr_Occurred()) { |
Antoine Pitrou | 82feb1f | 2010-01-14 17:34:48 +0000 | [diff] [blame] | 1285 | Py_DECREF(self); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1286 | return NULL; |
| 1287 | } |
| 1288 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 1289 | if (pattern == Py_None) { |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1290 | self->isbytes = -1; |
Victor Stinner | 63ab875 | 2011-11-22 03:31:20 +0100 | [diff] [blame] | 1291 | } |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 1292 | else { |
| 1293 | Py_ssize_t p_length; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1294 | int charsize; |
| 1295 | Py_buffer view; |
| 1296 | view.buf = NULL; |
| 1297 | if (!getstring(pattern, &p_length, &self->isbytes, |
| 1298 | &charsize, &view)) { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 1299 | Py_DECREF(self); |
| 1300 | return NULL; |
| 1301 | } |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1302 | if (view.buf) |
| 1303 | PyBuffer_Release(&view); |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 1304 | } |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1305 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1306 | Py_INCREF(pattern); |
| 1307 | self->pattern = pattern; |
| 1308 | |
| 1309 | self->flags = flags; |
| 1310 | |
| 1311 | self->groups = groups; |
| 1312 | |
| 1313 | Py_XINCREF(groupindex); |
| 1314 | self->groupindex = groupindex; |
| 1315 | |
| 1316 | Py_XINCREF(indexgroup); |
| 1317 | self->indexgroup = indexgroup; |
| 1318 | |
| 1319 | self->weakreflist = NULL; |
| 1320 | |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1321 | if (!_validate(self)) { |
| 1322 | Py_DECREF(self); |
| 1323 | return NULL; |
| 1324 | } |
| 1325 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1326 | return (PyObject*) self; |
| 1327 | } |
| 1328 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1329 | /* -------------------------------------------------------------------- */ |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1330 | /* Code validation */ |
| 1331 | |
| 1332 | /* To learn more about this code, have a look at the _compile() function in |
| 1333 | Lib/sre_compile.py. The validation functions below checks the code array |
| 1334 | for conformance with the code patterns generated there. |
| 1335 | |
| 1336 | The nice thing about the generated code is that it is position-independent: |
| 1337 | all jumps are relative jumps forward. Also, jumps don't cross each other: |
| 1338 | the target of a later jump is always earlier than the target of an earlier |
| 1339 | jump. IOW, this is okay: |
| 1340 | |
| 1341 | J---------J-------T--------T |
| 1342 | \ \_____/ / |
| 1343 | \______________________/ |
| 1344 | |
| 1345 | but this is not: |
| 1346 | |
| 1347 | J---------J-------T--------T |
| 1348 | \_________\_____/ / |
| 1349 | \____________/ |
| 1350 | |
Serhiy Storchaka | efa5a39 | 2013-10-27 08:04:58 +0200 | [diff] [blame] | 1351 | It also helps that SRE_CODE is always an unsigned type. |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1352 | */ |
| 1353 | |
| 1354 | /* Defining this one enables tracing of the validator */ |
| 1355 | #undef VVERBOSE |
| 1356 | |
| 1357 | /* Trace macro for the validator */ |
| 1358 | #if defined(VVERBOSE) |
| 1359 | #define VTRACE(v) printf v |
| 1360 | #else |
Senthil Kumaran | 202a3c4 | 2011-10-20 02:15:36 +0800 | [diff] [blame] | 1361 | #define VTRACE(v) do {} while(0) /* do nothing */ |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1362 | #endif |
| 1363 | |
| 1364 | /* Report failure */ |
| 1365 | #define FAIL do { VTRACE(("FAIL: %d\n", __LINE__)); return 0; } while (0) |
| 1366 | |
| 1367 | /* Extract opcode, argument, or skip count from code array */ |
| 1368 | #define GET_OP \ |
| 1369 | do { \ |
| 1370 | VTRACE(("%p: ", code)); \ |
| 1371 | if (code >= end) FAIL; \ |
| 1372 | op = *code++; \ |
| 1373 | VTRACE(("%lu (op)\n", (unsigned long)op)); \ |
| 1374 | } while (0) |
| 1375 | #define GET_ARG \ |
| 1376 | do { \ |
| 1377 | VTRACE(("%p= ", code)); \ |
| 1378 | if (code >= end) FAIL; \ |
| 1379 | arg = *code++; \ |
| 1380 | VTRACE(("%lu (arg)\n", (unsigned long)arg)); \ |
| 1381 | } while (0) |
Guido van Rossum | 92f8f3e | 2008-09-10 14:30:50 +0000 | [diff] [blame] | 1382 | #define GET_SKIP_ADJ(adj) \ |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1383 | do { \ |
| 1384 | VTRACE(("%p= ", code)); \ |
| 1385 | if (code >= end) FAIL; \ |
| 1386 | skip = *code; \ |
| 1387 | VTRACE(("%lu (skip to %p)\n", \ |
| 1388 | (unsigned long)skip, code+skip)); \ |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1389 | if (skip-adj > (Py_uintptr_t)(end - code)) \ |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1390 | FAIL; \ |
| 1391 | code++; \ |
| 1392 | } while (0) |
Guido van Rossum | 92f8f3e | 2008-09-10 14:30:50 +0000 | [diff] [blame] | 1393 | #define GET_SKIP GET_SKIP_ADJ(0) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1394 | |
| 1395 | static int |
| 1396 | _validate_charset(SRE_CODE *code, SRE_CODE *end) |
| 1397 | { |
| 1398 | /* Some variables are manipulated by the macros above */ |
| 1399 | SRE_CODE op; |
| 1400 | SRE_CODE arg; |
| 1401 | SRE_CODE offset; |
| 1402 | int i; |
| 1403 | |
| 1404 | while (code < end) { |
| 1405 | GET_OP; |
| 1406 | switch (op) { |
| 1407 | |
| 1408 | case SRE_OP_NEGATE: |
| 1409 | break; |
| 1410 | |
| 1411 | case SRE_OP_LITERAL: |
| 1412 | GET_ARG; |
| 1413 | break; |
| 1414 | |
| 1415 | case SRE_OP_RANGE: |
| 1416 | GET_ARG; |
| 1417 | GET_ARG; |
| 1418 | break; |
| 1419 | |
| 1420 | case SRE_OP_CHARSET: |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1421 | offset = 256/SRE_CODE_BITS; /* 256-bit bitmap */ |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1422 | if (offset > (Py_uintptr_t)(end - code)) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1423 | FAIL; |
| 1424 | code += offset; |
| 1425 | break; |
| 1426 | |
| 1427 | case SRE_OP_BIGCHARSET: |
| 1428 | GET_ARG; /* Number of blocks */ |
| 1429 | offset = 256/sizeof(SRE_CODE); /* 256-byte table */ |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1430 | if (offset > (Py_uintptr_t)(end - code)) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1431 | FAIL; |
| 1432 | /* Make sure that each byte points to a valid block */ |
| 1433 | for (i = 0; i < 256; i++) { |
| 1434 | if (((unsigned char *)code)[i] >= arg) |
| 1435 | FAIL; |
| 1436 | } |
| 1437 | code += offset; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1438 | offset = arg * (256/SRE_CODE_BITS); /* 256-bit bitmap times arg */ |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1439 | if (offset > (Py_uintptr_t)(end - code)) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1440 | FAIL; |
| 1441 | code += offset; |
| 1442 | break; |
| 1443 | |
| 1444 | case SRE_OP_CATEGORY: |
| 1445 | GET_ARG; |
| 1446 | switch (arg) { |
| 1447 | case SRE_CATEGORY_DIGIT: |
| 1448 | case SRE_CATEGORY_NOT_DIGIT: |
| 1449 | case SRE_CATEGORY_SPACE: |
| 1450 | case SRE_CATEGORY_NOT_SPACE: |
| 1451 | case SRE_CATEGORY_WORD: |
| 1452 | case SRE_CATEGORY_NOT_WORD: |
| 1453 | case SRE_CATEGORY_LINEBREAK: |
| 1454 | case SRE_CATEGORY_NOT_LINEBREAK: |
| 1455 | case SRE_CATEGORY_LOC_WORD: |
| 1456 | case SRE_CATEGORY_LOC_NOT_WORD: |
| 1457 | case SRE_CATEGORY_UNI_DIGIT: |
| 1458 | case SRE_CATEGORY_UNI_NOT_DIGIT: |
| 1459 | case SRE_CATEGORY_UNI_SPACE: |
| 1460 | case SRE_CATEGORY_UNI_NOT_SPACE: |
| 1461 | case SRE_CATEGORY_UNI_WORD: |
| 1462 | case SRE_CATEGORY_UNI_NOT_WORD: |
| 1463 | case SRE_CATEGORY_UNI_LINEBREAK: |
| 1464 | case SRE_CATEGORY_UNI_NOT_LINEBREAK: |
| 1465 | break; |
| 1466 | default: |
| 1467 | FAIL; |
| 1468 | } |
| 1469 | break; |
| 1470 | |
| 1471 | default: |
| 1472 | FAIL; |
| 1473 | |
| 1474 | } |
| 1475 | } |
| 1476 | |
| 1477 | return 1; |
| 1478 | } |
| 1479 | |
| 1480 | static int |
| 1481 | _validate_inner(SRE_CODE *code, SRE_CODE *end, Py_ssize_t groups) |
| 1482 | { |
| 1483 | /* Some variables are manipulated by the macros above */ |
| 1484 | SRE_CODE op; |
| 1485 | SRE_CODE arg; |
| 1486 | SRE_CODE skip; |
| 1487 | |
| 1488 | VTRACE(("code=%p, end=%p\n", code, end)); |
| 1489 | |
| 1490 | if (code > end) |
| 1491 | FAIL; |
| 1492 | |
| 1493 | while (code < end) { |
| 1494 | GET_OP; |
| 1495 | switch (op) { |
| 1496 | |
| 1497 | case SRE_OP_MARK: |
| 1498 | /* We don't check whether marks are properly nested; the |
| 1499 | sre_match() code is robust even if they don't, and the worst |
| 1500 | you can get is nonsensical match results. */ |
| 1501 | GET_ARG; |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1502 | if (arg > 2 * (size_t)groups + 1) { |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1503 | VTRACE(("arg=%d, groups=%d\n", (int)arg, (int)groups)); |
| 1504 | FAIL; |
| 1505 | } |
| 1506 | break; |
| 1507 | |
| 1508 | case SRE_OP_LITERAL: |
| 1509 | case SRE_OP_NOT_LITERAL: |
| 1510 | case SRE_OP_LITERAL_IGNORE: |
| 1511 | case SRE_OP_NOT_LITERAL_IGNORE: |
| 1512 | GET_ARG; |
| 1513 | /* The arg is just a character, nothing to check */ |
| 1514 | break; |
| 1515 | |
| 1516 | case SRE_OP_SUCCESS: |
| 1517 | case SRE_OP_FAILURE: |
| 1518 | /* Nothing to check; these normally end the matching process */ |
| 1519 | break; |
| 1520 | |
| 1521 | case SRE_OP_AT: |
| 1522 | GET_ARG; |
| 1523 | switch (arg) { |
| 1524 | case SRE_AT_BEGINNING: |
| 1525 | case SRE_AT_BEGINNING_STRING: |
| 1526 | case SRE_AT_BEGINNING_LINE: |
| 1527 | case SRE_AT_END: |
| 1528 | case SRE_AT_END_LINE: |
| 1529 | case SRE_AT_END_STRING: |
| 1530 | case SRE_AT_BOUNDARY: |
| 1531 | case SRE_AT_NON_BOUNDARY: |
| 1532 | case SRE_AT_LOC_BOUNDARY: |
| 1533 | case SRE_AT_LOC_NON_BOUNDARY: |
| 1534 | case SRE_AT_UNI_BOUNDARY: |
| 1535 | case SRE_AT_UNI_NON_BOUNDARY: |
| 1536 | break; |
| 1537 | default: |
| 1538 | FAIL; |
| 1539 | } |
| 1540 | break; |
| 1541 | |
| 1542 | case SRE_OP_ANY: |
| 1543 | case SRE_OP_ANY_ALL: |
| 1544 | /* These have no operands */ |
| 1545 | break; |
| 1546 | |
| 1547 | case SRE_OP_IN: |
| 1548 | case SRE_OP_IN_IGNORE: |
| 1549 | GET_SKIP; |
| 1550 | /* Stop 1 before the end; we check the FAILURE below */ |
| 1551 | if (!_validate_charset(code, code+skip-2)) |
| 1552 | FAIL; |
| 1553 | if (code[skip-2] != SRE_OP_FAILURE) |
| 1554 | FAIL; |
| 1555 | code += skip-1; |
| 1556 | break; |
| 1557 | |
| 1558 | case SRE_OP_INFO: |
| 1559 | { |
| 1560 | /* A minimal info field is |
| 1561 | <INFO> <1=skip> <2=flags> <3=min> <4=max>; |
| 1562 | If SRE_INFO_PREFIX or SRE_INFO_CHARSET is in the flags, |
| 1563 | more follows. */ |
Ross Lagerwall | 88748d7 | 2012-03-06 21:48:57 +0200 | [diff] [blame] | 1564 | SRE_CODE flags, i; |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1565 | SRE_CODE *newcode; |
| 1566 | GET_SKIP; |
| 1567 | newcode = code+skip-1; |
| 1568 | GET_ARG; flags = arg; |
Ross Lagerwall | 88748d7 | 2012-03-06 21:48:57 +0200 | [diff] [blame] | 1569 | GET_ARG; |
| 1570 | GET_ARG; |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1571 | /* Check that only valid flags are present */ |
| 1572 | if ((flags & ~(SRE_INFO_PREFIX | |
| 1573 | SRE_INFO_LITERAL | |
| 1574 | SRE_INFO_CHARSET)) != 0) |
| 1575 | FAIL; |
| 1576 | /* PREFIX and CHARSET are mutually exclusive */ |
| 1577 | if ((flags & SRE_INFO_PREFIX) && |
| 1578 | (flags & SRE_INFO_CHARSET)) |
| 1579 | FAIL; |
| 1580 | /* LITERAL implies PREFIX */ |
| 1581 | if ((flags & SRE_INFO_LITERAL) && |
| 1582 | !(flags & SRE_INFO_PREFIX)) |
| 1583 | FAIL; |
| 1584 | /* Validate the prefix */ |
| 1585 | if (flags & SRE_INFO_PREFIX) { |
Ross Lagerwall | 88748d7 | 2012-03-06 21:48:57 +0200 | [diff] [blame] | 1586 | SRE_CODE prefix_len; |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1587 | GET_ARG; prefix_len = arg; |
Ross Lagerwall | 88748d7 | 2012-03-06 21:48:57 +0200 | [diff] [blame] | 1588 | GET_ARG; |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1589 | /* Here comes the prefix string */ |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1590 | if (prefix_len > (Py_uintptr_t)(newcode - code)) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1591 | FAIL; |
| 1592 | code += prefix_len; |
| 1593 | /* And here comes the overlap table */ |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1594 | if (prefix_len > (Py_uintptr_t)(newcode - code)) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1595 | FAIL; |
| 1596 | /* Each overlap value should be < prefix_len */ |
| 1597 | for (i = 0; i < prefix_len; i++) { |
| 1598 | if (code[i] >= prefix_len) |
| 1599 | FAIL; |
| 1600 | } |
| 1601 | code += prefix_len; |
| 1602 | } |
| 1603 | /* Validate the charset */ |
| 1604 | if (flags & SRE_INFO_CHARSET) { |
| 1605 | if (!_validate_charset(code, newcode-1)) |
| 1606 | FAIL; |
| 1607 | if (newcode[-1] != SRE_OP_FAILURE) |
| 1608 | FAIL; |
| 1609 | code = newcode; |
| 1610 | } |
| 1611 | else if (code != newcode) { |
| 1612 | VTRACE(("code=%p, newcode=%p\n", code, newcode)); |
| 1613 | FAIL; |
| 1614 | } |
| 1615 | } |
| 1616 | break; |
| 1617 | |
| 1618 | case SRE_OP_BRANCH: |
| 1619 | { |
| 1620 | SRE_CODE *target = NULL; |
| 1621 | for (;;) { |
| 1622 | GET_SKIP; |
| 1623 | if (skip == 0) |
| 1624 | break; |
| 1625 | /* Stop 2 before the end; we check the JUMP below */ |
| 1626 | if (!_validate_inner(code, code+skip-3, groups)) |
| 1627 | FAIL; |
| 1628 | code += skip-3; |
| 1629 | /* Check that it ends with a JUMP, and that each JUMP |
| 1630 | has the same target */ |
| 1631 | GET_OP; |
| 1632 | if (op != SRE_OP_JUMP) |
| 1633 | FAIL; |
| 1634 | GET_SKIP; |
| 1635 | if (target == NULL) |
| 1636 | target = code+skip-1; |
| 1637 | else if (code+skip-1 != target) |
| 1638 | FAIL; |
| 1639 | } |
| 1640 | } |
| 1641 | break; |
| 1642 | |
| 1643 | case SRE_OP_REPEAT_ONE: |
| 1644 | case SRE_OP_MIN_REPEAT_ONE: |
| 1645 | { |
| 1646 | SRE_CODE min, max; |
| 1647 | GET_SKIP; |
| 1648 | GET_ARG; min = arg; |
| 1649 | GET_ARG; max = arg; |
| 1650 | if (min > max) |
| 1651 | FAIL; |
Serhiy Storchaka | 70ca021 | 2013-02-16 16:47:47 +0200 | [diff] [blame] | 1652 | if (max > SRE_MAXREPEAT) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1653 | FAIL; |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1654 | if (!_validate_inner(code, code+skip-4, groups)) |
| 1655 | FAIL; |
| 1656 | code += skip-4; |
| 1657 | GET_OP; |
| 1658 | if (op != SRE_OP_SUCCESS) |
| 1659 | FAIL; |
| 1660 | } |
| 1661 | break; |
| 1662 | |
| 1663 | case SRE_OP_REPEAT: |
| 1664 | { |
| 1665 | SRE_CODE min, max; |
| 1666 | GET_SKIP; |
| 1667 | GET_ARG; min = arg; |
| 1668 | GET_ARG; max = arg; |
| 1669 | if (min > max) |
| 1670 | FAIL; |
Serhiy Storchaka | 70ca021 | 2013-02-16 16:47:47 +0200 | [diff] [blame] | 1671 | if (max > SRE_MAXREPEAT) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1672 | FAIL; |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1673 | if (!_validate_inner(code, code+skip-3, groups)) |
| 1674 | FAIL; |
| 1675 | code += skip-3; |
| 1676 | GET_OP; |
| 1677 | if (op != SRE_OP_MAX_UNTIL && op != SRE_OP_MIN_UNTIL) |
| 1678 | FAIL; |
| 1679 | } |
| 1680 | break; |
| 1681 | |
| 1682 | case SRE_OP_GROUPREF: |
| 1683 | case SRE_OP_GROUPREF_IGNORE: |
| 1684 | GET_ARG; |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1685 | if (arg >= (size_t)groups) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1686 | FAIL; |
| 1687 | break; |
| 1688 | |
| 1689 | case SRE_OP_GROUPREF_EXISTS: |
| 1690 | /* The regex syntax for this is: '(?(group)then|else)', where |
| 1691 | 'group' is either an integer group number or a group name, |
| 1692 | 'then' and 'else' are sub-regexes, and 'else' is optional. */ |
| 1693 | GET_ARG; |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1694 | if (arg >= (size_t)groups) |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1695 | FAIL; |
Guido van Rossum | 92f8f3e | 2008-09-10 14:30:50 +0000 | [diff] [blame] | 1696 | GET_SKIP_ADJ(1); |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1697 | code--; /* The skip is relative to the first arg! */ |
| 1698 | /* There are two possibilities here: if there is both a 'then' |
| 1699 | part and an 'else' part, the generated code looks like: |
| 1700 | |
| 1701 | GROUPREF_EXISTS |
| 1702 | <group> |
| 1703 | <skipyes> |
| 1704 | ...then part... |
| 1705 | JUMP |
| 1706 | <skipno> |
| 1707 | (<skipyes> jumps here) |
| 1708 | ...else part... |
| 1709 | (<skipno> jumps here) |
| 1710 | |
| 1711 | If there is only a 'then' part, it looks like: |
| 1712 | |
| 1713 | GROUPREF_EXISTS |
| 1714 | <group> |
| 1715 | <skip> |
| 1716 | ...then part... |
| 1717 | (<skip> jumps here) |
| 1718 | |
| 1719 | There is no direct way to decide which it is, and we don't want |
| 1720 | to allow arbitrary jumps anywhere in the code; so we just look |
| 1721 | for a JUMP opcode preceding our skip target. |
| 1722 | */ |
Victor Stinner | 1fa174a | 2013-08-28 02:06:21 +0200 | [diff] [blame] | 1723 | if (skip >= 3 && skip-3 < (Py_uintptr_t)(end - code) && |
Guido van Rossum | 10faf6a | 2008-08-06 19:29:14 +0000 | [diff] [blame] | 1724 | code[skip-3] == SRE_OP_JUMP) |
| 1725 | { |
| 1726 | VTRACE(("both then and else parts present\n")); |
| 1727 | if (!_validate_inner(code+1, code+skip-3, groups)) |
| 1728 | FAIL; |
| 1729 | code += skip-2; /* Position after JUMP, at <skipno> */ |
| 1730 | GET_SKIP; |
| 1731 | if (!_validate_inner(code, code+skip-1, groups)) |
| 1732 | FAIL; |
| 1733 | code += skip-1; |
| 1734 | } |
| 1735 | else { |
| 1736 | VTRACE(("only a then part present\n")); |
| 1737 | if (!_validate_inner(code+1, code+skip-1, groups)) |
| 1738 | FAIL; |
| 1739 | code += skip-1; |
| 1740 | } |
| 1741 | break; |
| 1742 | |
| 1743 | case SRE_OP_ASSERT: |
| 1744 | case SRE_OP_ASSERT_NOT: |
| 1745 | GET_SKIP; |
| 1746 | GET_ARG; /* 0 for lookahead, width for lookbehind */ |
| 1747 | code--; /* Back up over arg to simplify math below */ |
| 1748 | if (arg & 0x80000000) |
| 1749 | FAIL; /* Width too large */ |
| 1750 | /* Stop 1 before the end; we check the SUCCESS below */ |
| 1751 | if (!_validate_inner(code+1, code+skip-2, groups)) |
| 1752 | FAIL; |
| 1753 | code += skip-2; |
| 1754 | GET_OP; |
| 1755 | if (op != SRE_OP_SUCCESS) |
| 1756 | FAIL; |
| 1757 | break; |
| 1758 | |
| 1759 | default: |
| 1760 | FAIL; |
| 1761 | |
| 1762 | } |
| 1763 | } |
| 1764 | |
| 1765 | VTRACE(("okay\n")); |
| 1766 | return 1; |
| 1767 | } |
| 1768 | |
| 1769 | static int |
| 1770 | _validate_outer(SRE_CODE *code, SRE_CODE *end, Py_ssize_t groups) |
| 1771 | { |
| 1772 | if (groups < 0 || groups > 100 || code >= end || end[-1] != SRE_OP_SUCCESS) |
| 1773 | FAIL; |
| 1774 | if (groups == 0) /* fix for simplejson */ |
| 1775 | groups = 100; /* 100 groups should always be safe */ |
| 1776 | return _validate_inner(code, end-1, groups); |
| 1777 | } |
| 1778 | |
| 1779 | static int |
| 1780 | _validate(PatternObject *self) |
| 1781 | { |
| 1782 | if (!_validate_outer(self->code, self->code+self->codesize, self->groups)) |
| 1783 | { |
| 1784 | PyErr_SetString(PyExc_RuntimeError, "invalid SRE code"); |
| 1785 | return 0; |
| 1786 | } |
| 1787 | else |
| 1788 | VTRACE(("Success!\n")); |
| 1789 | return 1; |
| 1790 | } |
| 1791 | |
| 1792 | /* -------------------------------------------------------------------- */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1793 | /* match methods */ |
| 1794 | |
| 1795 | static void |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1796 | match_dealloc(MatchObject* self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1797 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1798 | Py_XDECREF(self->regs); |
| 1799 | Py_XDECREF(self->string); |
| 1800 | Py_DECREF(self->pattern); |
| 1801 | PyObject_DEL(self); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1802 | } |
| 1803 | |
| 1804 | static PyObject* |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1805 | match_getslice_by_index(MatchObject* self, Py_ssize_t index, PyObject* def) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1806 | { |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1807 | Py_ssize_t length; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1808 | int isbytes, charsize; |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1809 | Py_buffer view; |
| 1810 | PyObject *result; |
| 1811 | void* ptr; |
| 1812 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1813 | if (index < 0 || index >= self->groups) { |
| 1814 | /* raise IndexError if we were given a bad group number */ |
| 1815 | PyErr_SetString( |
| 1816 | PyExc_IndexError, |
| 1817 | "no such group" |
| 1818 | ); |
| 1819 | return NULL; |
| 1820 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1821 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1822 | index *= 2; |
| 1823 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1824 | if (self->string == Py_None || self->mark[index] < 0) { |
| 1825 | /* return default value if the string or group is undefined */ |
| 1826 | Py_INCREF(def); |
| 1827 | return def; |
| 1828 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1829 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1830 | ptr = getstring(self->string, &length, &isbytes, &charsize, &view); |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1831 | if (ptr == NULL) |
| 1832 | return NULL; |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1833 | result = getslice(isbytes, ptr, |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1834 | self->string, self->mark[index], self->mark[index+1]); |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 1835 | if (isbytes && view.buf != NULL) |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 1836 | PyBuffer_Release(&view); |
| 1837 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1838 | } |
| 1839 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1840 | static Py_ssize_t |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1841 | match_getindex(MatchObject* self, PyObject* index) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1842 | { |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1843 | Py_ssize_t i; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1844 | |
Guido van Rossum | ddefaf3 | 2007-01-14 03:31:43 +0000 | [diff] [blame] | 1845 | if (index == NULL) |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 1846 | /* Default value */ |
| 1847 | return 0; |
Guido van Rossum | ddefaf3 | 2007-01-14 03:31:43 +0000 | [diff] [blame] | 1848 | |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 1849 | if (PyLong_Check(index)) |
| 1850 | return PyLong_AsSsize_t(index); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1851 | |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1852 | i = -1; |
| 1853 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1854 | if (self->pattern->groupindex) { |
| 1855 | index = PyObject_GetItem(self->pattern->groupindex, index); |
| 1856 | if (index) { |
Neal Norwitz | 1fe5f38 | 2007-08-31 04:32:55 +0000 | [diff] [blame] | 1857 | if (PyLong_Check(index)) |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 1858 | i = PyLong_AsSsize_t(index); |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1859 | Py_DECREF(index); |
| 1860 | } else |
| 1861 | PyErr_Clear(); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1862 | } |
Fredrik Lundh | 6f01398 | 2000-07-03 18:44:21 +0000 | [diff] [blame] | 1863 | |
| 1864 | return i; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1865 | } |
| 1866 | |
| 1867 | static PyObject* |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1868 | match_getslice(MatchObject* self, PyObject* index, PyObject* def) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1869 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1870 | return match_getslice_by_index(self, match_getindex(self, index), def); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1871 | } |
| 1872 | |
| 1873 | static PyObject* |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1874 | match_expand(MatchObject* self, PyObject* ptemplate) |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1875 | { |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1876 | /* delegate to Python code */ |
| 1877 | return call( |
Thomas Wouters | 9ada3d6 | 2006-04-21 09:47:09 +0000 | [diff] [blame] | 1878 | SRE_PY_MODULE, "_expand", |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1879 | PyTuple_Pack(3, self->pattern, self, ptemplate) |
Fredrik Lundh | 5644b7f | 2000-09-21 17:03:25 +0000 | [diff] [blame] | 1880 | ); |
| 1881 | } |
| 1882 | |
| 1883 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1884 | match_group(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1885 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1886 | PyObject* result; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1887 | Py_ssize_t i, size; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1888 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1889 | size = PyTuple_GET_SIZE(args); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1890 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1891 | switch (size) { |
| 1892 | case 0: |
| 1893 | result = match_getslice(self, Py_False, Py_None); |
| 1894 | break; |
| 1895 | case 1: |
| 1896 | result = match_getslice(self, PyTuple_GET_ITEM(args, 0), Py_None); |
| 1897 | break; |
| 1898 | default: |
| 1899 | /* fetch multiple items */ |
| 1900 | result = PyTuple_New(size); |
| 1901 | if (!result) |
| 1902 | return NULL; |
| 1903 | for (i = 0; i < size; i++) { |
| 1904 | PyObject* item = match_getslice( |
Fredrik Lundh | df02d0b | 2000-06-30 07:08:20 +0000 | [diff] [blame] | 1905 | self, PyTuple_GET_ITEM(args, i), Py_None |
| 1906 | ); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1907 | if (!item) { |
| 1908 | Py_DECREF(result); |
| 1909 | return NULL; |
| 1910 | } |
| 1911 | PyTuple_SET_ITEM(result, i, item); |
| 1912 | } |
| 1913 | break; |
| 1914 | } |
| 1915 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1916 | } |
| 1917 | |
| 1918 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1919 | match_groups(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1920 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1921 | PyObject* result; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1922 | Py_ssize_t index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1923 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1924 | PyObject* def = Py_None; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 1925 | static char* kwlist[] = { "default", NULL }; |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1926 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groups", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1927 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1928 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1929 | result = PyTuple_New(self->groups-1); |
| 1930 | if (!result) |
| 1931 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1932 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1933 | for (index = 1; index < self->groups; index++) { |
| 1934 | PyObject* item; |
| 1935 | item = match_getslice_by_index(self, index, def); |
| 1936 | if (!item) { |
| 1937 | Py_DECREF(result); |
| 1938 | return NULL; |
| 1939 | } |
| 1940 | PyTuple_SET_ITEM(result, index-1, item); |
| 1941 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1942 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1943 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1944 | } |
| 1945 | |
| 1946 | static PyObject* |
Fredrik Lundh | 562586e | 2000-10-03 20:43:34 +0000 | [diff] [blame] | 1947 | match_groupdict(MatchObject* self, PyObject* args, PyObject* kw) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1948 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1949 | PyObject* result; |
| 1950 | PyObject* keys; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1951 | Py_ssize_t index; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1952 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1953 | PyObject* def = Py_None; |
Martin v. Löwis | 15e6274 | 2006-02-27 16:46:16 +0000 | [diff] [blame] | 1954 | static char* kwlist[] = { "default", NULL }; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1955 | if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:groupdict", kwlist, &def)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1956 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 1957 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1958 | result = PyDict_New(); |
| 1959 | if (!result || !self->pattern->groupindex) |
| 1960 | return result; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1961 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1962 | keys = PyMapping_Keys(self->pattern->groupindex); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1963 | if (!keys) |
| 1964 | goto failed; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1965 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1966 | for (index = 0; index < PyList_GET_SIZE(keys); index++) { |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1967 | int status; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1968 | PyObject* key; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1969 | PyObject* value; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1970 | key = PyList_GET_ITEM(keys, index); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1971 | if (!key) |
| 1972 | goto failed; |
| 1973 | value = match_getslice(self, key, def); |
| 1974 | if (!value) { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1975 | Py_DECREF(key); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1976 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1977 | } |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1978 | status = PyDict_SetItem(result, key, value); |
| 1979 | Py_DECREF(value); |
| 1980 | if (status < 0) |
| 1981 | goto failed; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1982 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1983 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1984 | Py_DECREF(keys); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1985 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 1986 | return result; |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1987 | |
| 1988 | failed: |
Neal Norwitz | 60da316 | 2006-03-07 04:48:24 +0000 | [diff] [blame] | 1989 | Py_XDECREF(keys); |
Fredrik Lundh | 770617b | 2001-01-14 15:06:11 +0000 | [diff] [blame] | 1990 | Py_DECREF(result); |
| 1991 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1992 | } |
| 1993 | |
| 1994 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 1995 | match_start(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 1996 | { |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1997 | Py_ssize_t index; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 1998 | |
Guido van Rossum | ddefaf3 | 2007-01-14 03:31:43 +0000 | [diff] [blame] | 1999 | PyObject* index_ = NULL; |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2000 | if (!PyArg_UnpackTuple(args, "start", 0, 1, &index_)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2001 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2002 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2003 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2004 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2005 | if (index < 0 || index >= self->groups) { |
| 2006 | PyErr_SetString( |
| 2007 | PyExc_IndexError, |
| 2008 | "no such group" |
| 2009 | ); |
| 2010 | return NULL; |
| 2011 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2012 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2013 | /* mark is -1 if group is undefined */ |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 2014 | return PyLong_FromSsize_t(self->mark[index*2]); |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2015 | } |
| 2016 | |
| 2017 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2018 | match_end(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2019 | { |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2020 | Py_ssize_t index; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2021 | |
Guido van Rossum | ddefaf3 | 2007-01-14 03:31:43 +0000 | [diff] [blame] | 2022 | PyObject* index_ = NULL; |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2023 | if (!PyArg_UnpackTuple(args, "end", 0, 1, &index_)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2024 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2025 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2026 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2027 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2028 | if (index < 0 || index >= self->groups) { |
| 2029 | PyErr_SetString( |
| 2030 | PyExc_IndexError, |
| 2031 | "no such group" |
| 2032 | ); |
| 2033 | return NULL; |
| 2034 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2035 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2036 | /* mark is -1 if group is undefined */ |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 2037 | return PyLong_FromSsize_t(self->mark[index*2+1]); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2038 | } |
| 2039 | |
| 2040 | LOCAL(PyObject*) |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2041 | _pair(Py_ssize_t i1, Py_ssize_t i2) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2042 | { |
| 2043 | PyObject* pair; |
| 2044 | PyObject* item; |
| 2045 | |
| 2046 | pair = PyTuple_New(2); |
| 2047 | if (!pair) |
| 2048 | return NULL; |
| 2049 | |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 2050 | item = PyLong_FromSsize_t(i1); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2051 | if (!item) |
| 2052 | goto error; |
| 2053 | PyTuple_SET_ITEM(pair, 0, item); |
| 2054 | |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 2055 | item = PyLong_FromSsize_t(i2); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2056 | if (!item) |
| 2057 | goto error; |
| 2058 | PyTuple_SET_ITEM(pair, 1, item); |
| 2059 | |
| 2060 | return pair; |
| 2061 | |
| 2062 | error: |
| 2063 | Py_DECREF(pair); |
| 2064 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2065 | } |
| 2066 | |
| 2067 | static PyObject* |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2068 | match_span(MatchObject* self, PyObject* args) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2069 | { |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2070 | Py_ssize_t index; |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2071 | |
Guido van Rossum | ddefaf3 | 2007-01-14 03:31:43 +0000 | [diff] [blame] | 2072 | PyObject* index_ = NULL; |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2073 | if (!PyArg_UnpackTuple(args, "span", 0, 1, &index_)) |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2074 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2075 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2076 | index = match_getindex(self, index_); |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2077 | |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2078 | if (index < 0 || index >= self->groups) { |
| 2079 | PyErr_SetString( |
| 2080 | PyExc_IndexError, |
| 2081 | "no such group" |
| 2082 | ); |
| 2083 | return NULL; |
| 2084 | } |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2085 | |
Fredrik Lundh | 510c97b | 2000-09-02 16:36:57 +0000 | [diff] [blame] | 2086 | /* marks are -1 if group is undefined */ |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2087 | return _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2088 | } |
| 2089 | |
| 2090 | static PyObject* |
| 2091 | match_regs(MatchObject* self) |
| 2092 | { |
| 2093 | PyObject* regs; |
| 2094 | PyObject* item; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2095 | Py_ssize_t index; |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2096 | |
| 2097 | regs = PyTuple_New(self->groups); |
| 2098 | if (!regs) |
| 2099 | return NULL; |
| 2100 | |
| 2101 | for (index = 0; index < self->groups; index++) { |
| 2102 | item = _pair(self->mark[index*2], self->mark[index*2+1]); |
| 2103 | if (!item) { |
| 2104 | Py_DECREF(regs); |
| 2105 | return NULL; |
| 2106 | } |
| 2107 | PyTuple_SET_ITEM(regs, index, item); |
| 2108 | } |
| 2109 | |
| 2110 | Py_INCREF(regs); |
| 2111 | self->regs = regs; |
| 2112 | |
| 2113 | return regs; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2114 | } |
| 2115 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2116 | static PyObject* |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2117 | match_copy(MatchObject* self, PyObject *unused) |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2118 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2119 | #ifdef USE_BUILTIN_COPY |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2120 | MatchObject* copy; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2121 | Py_ssize_t slots, offset; |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 2122 | |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2123 | slots = 2 * (self->pattern->groups+1); |
| 2124 | |
| 2125 | copy = PyObject_NEW_VAR(MatchObject, &Match_Type, slots); |
| 2126 | if (!copy) |
| 2127 | return NULL; |
| 2128 | |
| 2129 | /* this value a constant, but any compiler should be able to |
| 2130 | figure that out all by itself */ |
| 2131 | offset = offsetof(MatchObject, string); |
| 2132 | |
| 2133 | Py_XINCREF(self->pattern); |
| 2134 | Py_XINCREF(self->string); |
| 2135 | Py_XINCREF(self->regs); |
| 2136 | |
| 2137 | memcpy((char*) copy + offset, (char*) self + offset, |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2138 | sizeof(MatchObject) + slots * sizeof(Py_ssize_t) - offset); |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2139 | |
| 2140 | return (PyObject*) copy; |
| 2141 | #else |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2142 | PyErr_SetString(PyExc_TypeError, "cannot copy this match object"); |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2143 | return NULL; |
| 2144 | #endif |
| 2145 | } |
| 2146 | |
| 2147 | static PyObject* |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2148 | match_deepcopy(MatchObject* self, PyObject* memo) |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2149 | { |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2150 | #ifdef USE_BUILTIN_COPY |
| 2151 | MatchObject* copy; |
Tim Peters | 3d56350 | 2006-01-21 02:47:53 +0000 | [diff] [blame] | 2152 | |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2153 | copy = (MatchObject*) match_copy(self); |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2154 | if (!copy) |
| 2155 | return NULL; |
| 2156 | |
| 2157 | if (!deepcopy((PyObject**) ©->pattern, memo) || |
| 2158 | !deepcopy(©->string, memo) || |
| 2159 | !deepcopy(©->regs, memo)) { |
| 2160 | Py_DECREF(copy); |
| 2161 | return NULL; |
| 2162 | } |
| 2163 | |
| 2164 | #else |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2165 | PyErr_SetString(PyExc_TypeError, "cannot deepcopy this match object"); |
| 2166 | return NULL; |
Fredrik Lundh | d89a2e7 | 2001-07-03 20:32:36 +0000 | [diff] [blame] | 2167 | #endif |
Fredrik Lundh | b0f05bd | 2001-07-02 16:42:49 +0000 | [diff] [blame] | 2168 | } |
| 2169 | |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2170 | PyDoc_STRVAR(match_doc, |
| 2171 | "The result of re.match() and re.search().\n\ |
| 2172 | Match objects always have a boolean value of True."); |
| 2173 | |
| 2174 | PyDoc_STRVAR(match_group_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2175 | "group([group1, ...]) -> str or tuple.\n\ |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2176 | Return subgroup(s) of the match by indices or names.\n\ |
| 2177 | For 0 returns the entire match."); |
| 2178 | |
| 2179 | PyDoc_STRVAR(match_start_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2180 | "start([group=0]) -> int.\n\ |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2181 | Return index of the start of the substring matched by group."); |
| 2182 | |
| 2183 | PyDoc_STRVAR(match_end_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2184 | "end([group=0]) -> int.\n\ |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2185 | Return index of the end of the substring matched by group."); |
| 2186 | |
| 2187 | PyDoc_STRVAR(match_span_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2188 | "span([group]) -> tuple.\n\ |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2189 | For MatchObject m, return the 2-tuple (m.start(group), m.end(group))."); |
| 2190 | |
| 2191 | PyDoc_STRVAR(match_groups_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2192 | "groups([default=None]) -> tuple.\n\ |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2193 | Return a tuple containing all the subgroups of the match, from 1.\n\ |
| 2194 | The default argument is used for groups\n\ |
| 2195 | that did not participate in the match"); |
| 2196 | |
| 2197 | PyDoc_STRVAR(match_groupdict_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2198 | "groupdict([default=None]) -> dict.\n\ |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2199 | Return a dictionary containing all the named subgroups of the match,\n\ |
| 2200 | keyed by the subgroup name. The default argument is used for groups\n\ |
| 2201 | that did not participate in the match"); |
| 2202 | |
| 2203 | PyDoc_STRVAR(match_expand_doc, |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2204 | "expand(template) -> str.\n\ |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2205 | Return the string obtained by doing backslash substitution\n\ |
| 2206 | on the string template, as done by the sub() method."); |
| 2207 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2208 | static PyMethodDef match_methods[] = { |
Andrew Svetlov | 56ad5ed | 2012-12-23 19:23:07 +0200 | [diff] [blame] | 2209 | {"group", (PyCFunction) match_group, METH_VARARGS, match_group_doc}, |
| 2210 | {"start", (PyCFunction) match_start, METH_VARARGS, match_start_doc}, |
| 2211 | {"end", (PyCFunction) match_end, METH_VARARGS, match_end_doc}, |
| 2212 | {"span", (PyCFunction) match_span, METH_VARARGS, match_span_doc}, |
| 2213 | {"groups", (PyCFunction) match_groups, METH_VARARGS|METH_KEYWORDS, |
| 2214 | match_groups_doc}, |
| 2215 | {"groupdict", (PyCFunction) match_groupdict, METH_VARARGS|METH_KEYWORDS, |
| 2216 | match_groupdict_doc}, |
| 2217 | {"expand", (PyCFunction) match_expand, METH_O, match_expand_doc}, |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2218 | {"__copy__", (PyCFunction) match_copy, METH_NOARGS}, |
| 2219 | {"__deepcopy__", (PyCFunction) match_deepcopy, METH_O}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2220 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2221 | }; |
| 2222 | |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2223 | static PyObject * |
| 2224 | match_lastindex_get(MatchObject *self) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2225 | { |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2226 | if (self->lastindex >= 0) |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 2227 | return PyLong_FromSsize_t(self->lastindex); |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2228 | Py_INCREF(Py_None); |
| 2229 | return Py_None; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2230 | } |
| 2231 | |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2232 | static PyObject * |
| 2233 | match_lastgroup_get(MatchObject *self) |
| 2234 | { |
| 2235 | if (self->pattern->indexgroup && self->lastindex >= 0) { |
| 2236 | PyObject* result = PySequence_GetItem( |
| 2237 | self->pattern->indexgroup, self->lastindex |
| 2238 | ); |
| 2239 | if (result) |
| 2240 | return result; |
| 2241 | PyErr_Clear(); |
| 2242 | } |
| 2243 | Py_INCREF(Py_None); |
| 2244 | return Py_None; |
| 2245 | } |
| 2246 | |
| 2247 | static PyObject * |
| 2248 | match_regs_get(MatchObject *self) |
| 2249 | { |
| 2250 | if (self->regs) { |
| 2251 | Py_INCREF(self->regs); |
| 2252 | return self->regs; |
| 2253 | } else |
| 2254 | return match_regs(self); |
| 2255 | } |
| 2256 | |
Serhiy Storchaka | 36af10c | 2013-10-20 13:13:31 +0300 | [diff] [blame] | 2257 | static PyObject * |
| 2258 | match_repr(MatchObject *self) |
| 2259 | { |
| 2260 | PyObject *result; |
| 2261 | PyObject *group0 = match_getslice_by_index(self, 0, Py_None); |
| 2262 | if (group0 == NULL) |
| 2263 | return NULL; |
| 2264 | result = PyUnicode_FromFormat( |
| 2265 | "<%s object; span=(%d, %d), match=%.50R>", |
| 2266 | Py_TYPE(self)->tp_name, |
| 2267 | self->mark[0], self->mark[1], group0); |
| 2268 | Py_DECREF(group0); |
| 2269 | return result; |
| 2270 | } |
| 2271 | |
| 2272 | |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2273 | static PyGetSetDef match_getset[] = { |
| 2274 | {"lastindex", (getter)match_lastindex_get, (setter)NULL}, |
| 2275 | {"lastgroup", (getter)match_lastgroup_get, (setter)NULL}, |
| 2276 | {"regs", (getter)match_regs_get, (setter)NULL}, |
| 2277 | {NULL} |
| 2278 | }; |
| 2279 | |
| 2280 | #define MATCH_OFF(x) offsetof(MatchObject, x) |
| 2281 | static PyMemberDef match_members[] = { |
| 2282 | {"string", T_OBJECT, MATCH_OFF(string), READONLY}, |
| 2283 | {"re", T_OBJECT, MATCH_OFF(pattern), READONLY}, |
| 2284 | {"pos", T_PYSSIZET, MATCH_OFF(pos), READONLY}, |
| 2285 | {"endpos", T_PYSSIZET, MATCH_OFF(endpos), READONLY}, |
| 2286 | {NULL} |
| 2287 | }; |
| 2288 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2289 | /* FIXME: implement setattr("string", None) as a special case (to |
| 2290 | detach the associated string, if any */ |
| 2291 | |
Neal Norwitz | 57c179c | 2006-03-22 07:18:02 +0000 | [diff] [blame] | 2292 | static PyTypeObject Match_Type = { |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 2293 | PyVarObject_HEAD_INIT(NULL,0) |
| 2294 | "_" SRE_MODULE ".SRE_Match", |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2295 | sizeof(MatchObject), sizeof(Py_ssize_t), |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 2296 | (destructor)match_dealloc, /* tp_dealloc */ |
| 2297 | 0, /* tp_print */ |
| 2298 | 0, /* tp_getattr */ |
| 2299 | 0, /* tp_setattr */ |
| 2300 | 0, /* tp_reserved */ |
Serhiy Storchaka | 36af10c | 2013-10-20 13:13:31 +0300 | [diff] [blame] | 2301 | (reprfunc)match_repr, /* tp_repr */ |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 2302 | 0, /* tp_as_number */ |
| 2303 | 0, /* tp_as_sequence */ |
| 2304 | 0, /* tp_as_mapping */ |
| 2305 | 0, /* tp_hash */ |
| 2306 | 0, /* tp_call */ |
| 2307 | 0, /* tp_str */ |
| 2308 | 0, /* tp_getattro */ |
| 2309 | 0, /* tp_setattro */ |
| 2310 | 0, /* tp_as_buffer */ |
| 2311 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
Andrew Svetlov | 70dcef4 | 2012-12-23 19:59:27 +0200 | [diff] [blame] | 2312 | match_doc, /* tp_doc */ |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 2313 | 0, /* tp_traverse */ |
| 2314 | 0, /* tp_clear */ |
| 2315 | 0, /* tp_richcompare */ |
| 2316 | 0, /* tp_weaklistoffset */ |
| 2317 | 0, /* tp_iter */ |
| 2318 | 0, /* tp_iternext */ |
| 2319 | match_methods, /* tp_methods */ |
| 2320 | match_members, /* tp_members */ |
| 2321 | match_getset, /* tp_getset */ |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2322 | }; |
| 2323 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2324 | static PyObject* |
| 2325 | pattern_new_match(PatternObject* pattern, SRE_STATE* state, int status) |
| 2326 | { |
| 2327 | /* create match object (from state object) */ |
| 2328 | |
| 2329 | MatchObject* match; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2330 | Py_ssize_t i, j; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2331 | char* base; |
| 2332 | int n; |
| 2333 | |
| 2334 | if (status > 0) { |
| 2335 | |
| 2336 | /* create match object (with room for extra group marks) */ |
Christian Heimes | 587c2bf | 2008-01-19 16:21:02 +0000 | [diff] [blame] | 2337 | /* coverity[ampersand_in_size] */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2338 | match = PyObject_NEW_VAR(MatchObject, &Match_Type, |
| 2339 | 2*(pattern->groups+1)); |
| 2340 | if (!match) |
| 2341 | return NULL; |
| 2342 | |
| 2343 | Py_INCREF(pattern); |
| 2344 | match->pattern = pattern; |
| 2345 | |
| 2346 | Py_INCREF(state->string); |
| 2347 | match->string = state->string; |
| 2348 | |
| 2349 | match->regs = NULL; |
| 2350 | match->groups = pattern->groups+1; |
| 2351 | |
| 2352 | /* fill in group slices */ |
| 2353 | |
| 2354 | base = (char*) state->beginning; |
| 2355 | n = state->charsize; |
| 2356 | |
| 2357 | match->mark[0] = ((char*) state->start - base) / n; |
| 2358 | match->mark[1] = ((char*) state->ptr - base) / n; |
| 2359 | |
| 2360 | for (i = j = 0; i < pattern->groups; i++, j+=2) |
| 2361 | if (j+1 <= state->lastmark && state->mark[j] && state->mark[j+1]) { |
| 2362 | match->mark[j+2] = ((char*) state->mark[j] - base) / n; |
| 2363 | match->mark[j+3] = ((char*) state->mark[j+1] - base) / n; |
| 2364 | } else |
| 2365 | match->mark[j+2] = match->mark[j+3] = -1; /* undefined */ |
| 2366 | |
| 2367 | match->pos = state->pos; |
| 2368 | match->endpos = state->endpos; |
| 2369 | |
| 2370 | match->lastindex = state->lastindex; |
| 2371 | |
| 2372 | return (PyObject*) match; |
| 2373 | |
| 2374 | } else if (status == 0) { |
| 2375 | |
| 2376 | /* no match */ |
| 2377 | Py_INCREF(Py_None); |
| 2378 | return Py_None; |
| 2379 | |
| 2380 | } |
| 2381 | |
| 2382 | /* internal error */ |
| 2383 | pattern_error(status); |
| 2384 | return NULL; |
| 2385 | } |
| 2386 | |
| 2387 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2388 | /* -------------------------------------------------------------------- */ |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2389 | /* scanner methods (experimental) */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2390 | |
| 2391 | static void |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2392 | scanner_dealloc(ScannerObject* self) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2393 | { |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2394 | state_fini(&self->state); |
Antoine Pitrou | 82feb1f | 2010-01-14 17:34:48 +0000 | [diff] [blame] | 2395 | Py_XDECREF(self->pattern); |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2396 | PyObject_DEL(self); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2397 | } |
| 2398 | |
| 2399 | static PyObject* |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2400 | scanner_match(ScannerObject* self, PyObject *unused) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2401 | { |
| 2402 | SRE_STATE* state = &self->state; |
| 2403 | PyObject* match; |
Victor Stinner | 7a6d7cf | 2012-10-31 00:37:41 +0100 | [diff] [blame] | 2404 | Py_ssize_t status; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2405 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2406 | state_reset(state); |
| 2407 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2408 | state->ptr = state->start; |
| 2409 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 2410 | status = sre_match(state, PatternObject_GetCode(self->pattern)); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 2411 | if (PyErr_Occurred()) |
| 2412 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2413 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2414 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2415 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2416 | |
Gustavo Niemeyer | 0506c64 | 2004-09-03 18:11:59 +0000 | [diff] [blame] | 2417 | if (status == 0 || state->ptr == state->start) |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2418 | state->start = (void*) ((char*) state->ptr + state->charsize); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2419 | else |
Fredrik Lundh | 436c3d58 | 2000-06-29 08:58:44 +0000 | [diff] [blame] | 2420 | state->start = state->ptr; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2421 | |
| 2422 | return match; |
| 2423 | } |
| 2424 | |
| 2425 | |
| 2426 | static PyObject* |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2427 | scanner_search(ScannerObject* self, PyObject *unused) |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2428 | { |
| 2429 | SRE_STATE* state = &self->state; |
| 2430 | PyObject* match; |
Victor Stinner | 7a6d7cf | 2012-10-31 00:37:41 +0100 | [diff] [blame] | 2431 | Py_ssize_t status; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2432 | |
Fredrik Lundh | 29c4ba9 | 2000-08-01 18:20:07 +0000 | [diff] [blame] | 2433 | state_reset(state); |
| 2434 | |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2435 | state->ptr = state->start; |
| 2436 | |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 2437 | status = sre_search(state, PatternObject_GetCode(self->pattern)); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 2438 | if (PyErr_Occurred()) |
| 2439 | return NULL; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2440 | |
Fredrik Lundh | 75f2d67 | 2000-06-29 11:34:28 +0000 | [diff] [blame] | 2441 | match = pattern_new_match((PatternObject*) self->pattern, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2442 | state, status); |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2443 | |
Gustavo Niemeyer | 0506c64 | 2004-09-03 18:11:59 +0000 | [diff] [blame] | 2444 | if (status == 0 || state->ptr == state->start) |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2445 | state->start = (void*) ((char*) state->ptr + state->charsize); |
| 2446 | else |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2447 | state->start = state->ptr; |
| 2448 | |
| 2449 | return match; |
| 2450 | } |
| 2451 | |
Fredrik Lundh | be2211e | 2000-06-29 16:57:40 +0000 | [diff] [blame] | 2452 | static PyMethodDef scanner_methods[] = { |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2453 | {"match", (PyCFunction) scanner_match, METH_NOARGS}, |
| 2454 | {"search", (PyCFunction) scanner_search, METH_NOARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2455 | {NULL, NULL} |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2456 | }; |
| 2457 | |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2458 | #define SCAN_OFF(x) offsetof(ScannerObject, x) |
| 2459 | static PyMemberDef scanner_members[] = { |
Ezio Melotti | 7c8c1ea | 2011-09-29 01:00:19 +0300 | [diff] [blame] | 2460 | {"pattern", T_OBJECT, SCAN_OFF(pattern), READONLY}, |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2461 | {NULL} /* Sentinel */ |
| 2462 | }; |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2463 | |
Neal Norwitz | 57c179c | 2006-03-22 07:18:02 +0000 | [diff] [blame] | 2464 | static PyTypeObject Scanner_Type = { |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 2465 | PyVarObject_HEAD_INIT(NULL, 0) |
| 2466 | "_" SRE_MODULE ".SRE_Scanner", |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2467 | sizeof(ScannerObject), 0, |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 2468 | (destructor)scanner_dealloc,/* tp_dealloc */ |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 2469 | 0, /* tp_print */ |
| 2470 | 0, /* tp_getattr */ |
| 2471 | 0, /* tp_setattr */ |
| 2472 | 0, /* tp_reserved */ |
| 2473 | 0, /* tp_repr */ |
| 2474 | 0, /* tp_as_number */ |
| 2475 | 0, /* tp_as_sequence */ |
| 2476 | 0, /* tp_as_mapping */ |
| 2477 | 0, /* tp_hash */ |
| 2478 | 0, /* tp_call */ |
| 2479 | 0, /* tp_str */ |
| 2480 | 0, /* tp_getattro */ |
| 2481 | 0, /* tp_setattro */ |
| 2482 | 0, /* tp_as_buffer */ |
| 2483 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
| 2484 | 0, /* tp_doc */ |
| 2485 | 0, /* tp_traverse */ |
| 2486 | 0, /* tp_clear */ |
| 2487 | 0, /* tp_richcompare */ |
| 2488 | 0, /* tp_weaklistoffset */ |
| 2489 | 0, /* tp_iter */ |
| 2490 | 0, /* tp_iternext */ |
| 2491 | scanner_methods, /* tp_methods */ |
| 2492 | scanner_members, /* tp_members */ |
| 2493 | 0, /* tp_getset */ |
Jeremy Hylton | b1aa195 | 2000-06-01 17:39:12 +0000 | [diff] [blame] | 2494 | }; |
| 2495 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2496 | static PyObject* |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 2497 | pattern_scanner(PatternObject* pattern, PyObject* args, PyObject* kw) |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2498 | { |
| 2499 | /* create search state object */ |
| 2500 | |
| 2501 | ScannerObject* self; |
| 2502 | |
| 2503 | PyObject* string; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2504 | Py_ssize_t start = 0; |
| 2505 | Py_ssize_t end = PY_SSIZE_T_MAX; |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 2506 | static char* kwlist[] = { "source", "pos", "endpos", NULL }; |
| 2507 | if (!PyArg_ParseTupleAndKeywords(args, kw, "O|nn:scanner", kwlist, |
| 2508 | &string, &start, &end)) |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2509 | return NULL; |
| 2510 | |
| 2511 | /* create scanner object */ |
| 2512 | self = PyObject_NEW(ScannerObject, &Scanner_Type); |
| 2513 | if (!self) |
| 2514 | return NULL; |
Antoine Pitrou | 82feb1f | 2010-01-14 17:34:48 +0000 | [diff] [blame] | 2515 | self->pattern = NULL; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2516 | |
| 2517 | string = state_init(&self->state, pattern, string, start, end); |
| 2518 | if (!string) { |
Antoine Pitrou | 82feb1f | 2010-01-14 17:34:48 +0000 | [diff] [blame] | 2519 | Py_DECREF(self); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2520 | return NULL; |
| 2521 | } |
| 2522 | |
| 2523 | Py_INCREF(pattern); |
| 2524 | self->pattern = (PyObject*) pattern; |
| 2525 | |
| 2526 | return (PyObject*) self; |
| 2527 | } |
| 2528 | |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2529 | static PyMethodDef _functions[] = { |
Neal Norwitz | b049325 | 2002-03-31 14:44:22 +0000 | [diff] [blame] | 2530 | {"compile", _compile, METH_VARARGS}, |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 2531 | {"getcodesize", sre_codesize, METH_NOARGS}, |
Neal Norwitz | b049325 | 2002-03-31 14:44:22 +0000 | [diff] [blame] | 2532 | {"getlower", sre_getlower, METH_VARARGS}, |
Fredrik Lundh | 8a3ebf8 | 2000-07-23 21:46:17 +0000 | [diff] [blame] | 2533 | {NULL, NULL} |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2534 | }; |
| 2535 | |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 2536 | static struct PyModuleDef sremodule = { |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 2537 | PyModuleDef_HEAD_INIT, |
| 2538 | "_" SRE_MODULE, |
| 2539 | NULL, |
| 2540 | -1, |
| 2541 | _functions, |
| 2542 | NULL, |
| 2543 | NULL, |
| 2544 | NULL, |
| 2545 | NULL |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 2546 | }; |
| 2547 | |
| 2548 | PyMODINIT_FUNC PyInit__sre(void) |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2549 | { |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2550 | PyObject* m; |
| 2551 | PyObject* d; |
Barry Warsaw | 214a0b13 | 2001-08-16 20:33:48 +0000 | [diff] [blame] | 2552 | PyObject* x; |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2553 | |
Benjamin Peterson | 08bf91c | 2010-04-11 16:12:57 +0000 | [diff] [blame] | 2554 | /* Patch object types */ |
| 2555 | if (PyType_Ready(&Pattern_Type) || PyType_Ready(&Match_Type) || |
| 2556 | PyType_Ready(&Scanner_Type)) |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 2557 | return NULL; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2558 | |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 2559 | m = PyModule_Create(&sremodule); |
Neal Norwitz | 1ac754f | 2006-01-19 06:09:39 +0000 | [diff] [blame] | 2560 | if (m == NULL) |
Ezio Melotti | 2aa2b3b | 2011-09-29 00:58:57 +0300 | [diff] [blame] | 2561 | return NULL; |
Fredrik Lundh | b35ffc0 | 2001-01-15 12:46:09 +0000 | [diff] [blame] | 2562 | d = PyModule_GetDict(m); |
| 2563 | |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 2564 | x = PyLong_FromLong(SRE_MAGIC); |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 2565 | if (x) { |
| 2566 | PyDict_SetItemString(d, "MAGIC", x); |
| 2567 | Py_DECREF(x); |
| 2568 | } |
Fredrik Lundh | 9c7eab8 | 2001-04-15 19:00:58 +0000 | [diff] [blame] | 2569 | |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 2570 | x = PyLong_FromLong(sizeof(SRE_CODE)); |
Martin v. Löwis | 78e2f06 | 2003-04-19 12:56:08 +0000 | [diff] [blame] | 2571 | if (x) { |
| 2572 | PyDict_SetItemString(d, "CODESIZE", x); |
| 2573 | Py_DECREF(x); |
| 2574 | } |
| 2575 | |
Serhiy Storchaka | 70ca021 | 2013-02-16 16:47:47 +0200 | [diff] [blame] | 2576 | x = PyLong_FromUnsignedLong(SRE_MAXREPEAT); |
| 2577 | if (x) { |
| 2578 | PyDict_SetItemString(d, "MAXREPEAT", x); |
| 2579 | Py_DECREF(x); |
| 2580 | } |
| 2581 | |
Neal Norwitz | fe53713 | 2007-08-26 03:55:15 +0000 | [diff] [blame] | 2582 | x = PyUnicode_FromString(copyright); |
Fredrik Lundh | 21009b9 | 2001-09-18 18:47:09 +0000 | [diff] [blame] | 2583 | if (x) { |
| 2584 | PyDict_SetItemString(d, "copyright", x); |
| 2585 | Py_DECREF(x); |
| 2586 | } |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 2587 | return m; |
Guido van Rossum | b700df9 | 2000-03-31 14:59:30 +0000 | [diff] [blame] | 2588 | } |
| 2589 | |
Gustavo Niemeyer | be733ee | 2003-04-20 07:35:44 +0000 | [diff] [blame] | 2590 | /* vim:ts=4:sw=4:et |
| 2591 | */ |