Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 1 | /************************************************* |
| 2 | * Perl-Compatible Regular Expressions * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* PCRE is a library of functions to support regular expressions whose syntax |
| 6 | and semantics are as close as possible to those of the Perl 5 language. |
| 7 | |
| 8 | Written by Philip Hazel |
| 9 | Original API code Copyright (c) 1997-2012 University of Cambridge |
Elliott Hughes | 2dbd7d2 | 2020-06-03 14:32:37 -0700 | [diff] [blame] | 10 | New API code Copyright (c) 2016-2019 University of Cambridge |
Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 11 | |
| 12 | ----------------------------------------------------------------------------- |
| 13 | Redistribution and use in source and binary forms, with or without |
| 14 | modification, are permitted provided that the following conditions are met: |
| 15 | |
| 16 | * Redistributions of source code must retain the above copyright notice, |
| 17 | this list of conditions and the following disclaimer. |
| 18 | |
| 19 | * Redistributions in binary form must reproduce the above copyright |
| 20 | notice, this list of conditions and the following disclaimer in the |
| 21 | documentation and/or other materials provided with the distribution. |
| 22 | |
| 23 | * Neither the name of the University of Cambridge nor the names of its |
| 24 | contributors may be used to endorse or promote products derived from |
| 25 | this software without specific prior written permission. |
| 26 | |
| 27 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 28 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 29 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 30 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 31 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 32 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 33 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 34 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 35 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 36 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 37 | POSSIBILITY OF SUCH DAMAGE. |
| 38 | ----------------------------------------------------------------------------- |
| 39 | */ |
| 40 | |
| 41 | |
| 42 | #ifdef HAVE_CONFIG_H |
| 43 | #include "config.h" |
| 44 | #endif |
| 45 | |
| 46 | #include "pcre2_internal.h" |
| 47 | |
| 48 | |
| 49 | |
| 50 | /************************************************* |
| 51 | * Create a match data block given ovector size * |
| 52 | *************************************************/ |
| 53 | |
Elliott Hughes | 9bc971b | 2018-07-27 13:23:14 -0700 | [diff] [blame] | 54 | /* A minimum of 1 is imposed on the number of ovector pairs. */ |
Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 55 | |
| 56 | PCRE2_EXP_DEFN pcre2_match_data * PCRE2_CALL_CONVENTION |
| 57 | pcre2_match_data_create(uint32_t oveccount, pcre2_general_context *gcontext) |
| 58 | { |
| 59 | pcre2_match_data *yield; |
| 60 | if (oveccount < 1) oveccount = 1; |
| 61 | yield = PRIV(memctl_malloc)( |
Elliott Hughes | 9bc971b | 2018-07-27 13:23:14 -0700 | [diff] [blame] | 62 | offsetof(pcre2_match_data, ovector) + 2*oveccount*sizeof(PCRE2_SIZE), |
Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 63 | (pcre2_memctl *)gcontext); |
| 64 | if (yield == NULL) return NULL; |
| 65 | yield->oveccount = oveccount; |
Elliott Hughes | 0c26e19 | 2019-08-07 12:24:46 -0700 | [diff] [blame] | 66 | yield->flags = 0; |
Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 67 | return yield; |
| 68 | } |
| 69 | |
| 70 | |
| 71 | |
| 72 | /************************************************* |
| 73 | * Create a match data block using pattern data * |
| 74 | *************************************************/ |
| 75 | |
| 76 | /* If no context is supplied, use the memory allocator from the code. */ |
| 77 | |
| 78 | PCRE2_EXP_DEFN pcre2_match_data * PCRE2_CALL_CONVENTION |
| 79 | pcre2_match_data_create_from_pattern(const pcre2_code *code, |
| 80 | pcre2_general_context *gcontext) |
| 81 | { |
| 82 | if (gcontext == NULL) gcontext = (pcre2_general_context *)code; |
| 83 | return pcre2_match_data_create(((pcre2_real_code *)code)->top_bracket + 1, |
| 84 | gcontext); |
| 85 | } |
| 86 | |
| 87 | |
| 88 | |
| 89 | /************************************************* |
| 90 | * Free a match data block * |
| 91 | *************************************************/ |
| 92 | |
| 93 | PCRE2_EXP_DEFN void PCRE2_CALL_CONVENTION |
| 94 | pcre2_match_data_free(pcre2_match_data *match_data) |
| 95 | { |
| 96 | if (match_data != NULL) |
Elliott Hughes | 0c26e19 | 2019-08-07 12:24:46 -0700 | [diff] [blame] | 97 | { |
| 98 | if ((match_data->flags & PCRE2_MD_COPIED_SUBJECT) != 0) |
| 99 | match_data->memctl.free((void *)match_data->subject, |
| 100 | match_data->memctl.memory_data); |
Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 101 | match_data->memctl.free(match_data, match_data->memctl.memory_data); |
Elliott Hughes | 0c26e19 | 2019-08-07 12:24:46 -0700 | [diff] [blame] | 102 | } |
Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | |
| 106 | |
| 107 | /************************************************* |
| 108 | * Get last mark in match * |
| 109 | *************************************************/ |
| 110 | |
| 111 | PCRE2_EXP_DEFN PCRE2_SPTR PCRE2_CALL_CONVENTION |
| 112 | pcre2_get_mark(pcre2_match_data *match_data) |
| 113 | { |
| 114 | return match_data->mark; |
| 115 | } |
| 116 | |
| 117 | |
| 118 | |
| 119 | /************************************************* |
| 120 | * Get pointer to ovector * |
| 121 | *************************************************/ |
| 122 | |
| 123 | PCRE2_EXP_DEFN PCRE2_SIZE * PCRE2_CALL_CONVENTION |
| 124 | pcre2_get_ovector_pointer(pcre2_match_data *match_data) |
| 125 | { |
| 126 | return match_data->ovector; |
| 127 | } |
| 128 | |
| 129 | |
| 130 | |
| 131 | /************************************************* |
| 132 | * Get number of ovector slots * |
| 133 | *************************************************/ |
| 134 | |
| 135 | PCRE2_EXP_DEFN uint32_t PCRE2_CALL_CONVENTION |
| 136 | pcre2_get_ovector_count(pcre2_match_data *match_data) |
| 137 | { |
| 138 | return match_data->oveccount; |
| 139 | } |
| 140 | |
| 141 | |
| 142 | |
| 143 | /************************************************* |
| 144 | * Get starting code unit in match * |
| 145 | *************************************************/ |
| 146 | |
| 147 | PCRE2_EXP_DEFN PCRE2_SIZE PCRE2_CALL_CONVENTION |
| 148 | pcre2_get_startchar(pcre2_match_data *match_data) |
| 149 | { |
| 150 | return match_data->startchar; |
| 151 | } |
| 152 | |
Elliott Hughes | 2dbd7d2 | 2020-06-03 14:32:37 -0700 | [diff] [blame] | 153 | |
| 154 | |
| 155 | /************************************************* |
| 156 | * Get size of match data block * |
| 157 | *************************************************/ |
| 158 | |
| 159 | PCRE2_EXP_DEFN PCRE2_SIZE PCRE2_CALL_CONVENTION |
| 160 | pcre2_get_match_data_size(pcre2_match_data *match_data) |
| 161 | { |
| 162 | return offsetof(pcre2_match_data, ovector) + |
| 163 | 2 * (match_data->oveccount) * sizeof(PCRE2_SIZE); |
| 164 | } |
| 165 | |
Janis Danisevskis | 112c9cc | 2016-03-31 13:35:25 +0100 | [diff] [blame] | 166 | /* End of pcre2_match_data.c */ |