1/*
2 * Regular Expression Engine
3 *
4 * Copyright (c) 2017-2018 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#ifndef LIBREGEXP_H
25#define LIBREGEXP_H
26
27#include <stddef.h>
28#include <stdint.h>
29
30#define LRE_FLAG_GLOBAL (1 << 0)
31#define LRE_FLAG_IGNORECASE (1 << 1)
32#define LRE_FLAG_MULTILINE (1 << 2)
33#define LRE_FLAG_DOTALL (1 << 3)
34#define LRE_FLAG_UNICODE (1 << 4)
35#define LRE_FLAG_STICKY (1 << 5)
36#define LRE_FLAG_INDICES (1 << 6) /* Unused by libregexp, just recorded. */
37#define LRE_FLAG_NAMED_GROUPS (1 << 7) /* named groups are present in the regexp */
38
39#define LRE_RET_MEMORY_ERROR (-1)
40#define LRE_RET_TIMEOUT (-2)
41
42uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size,
43 const char *buf, size_t buf_len, int re_flags,
44 void *opaque);
45int lre_get_capture_count(const uint8_t *bc_buf);
46int lre_get_flags(const uint8_t *bc_buf);
47const char *lre_get_groupnames(const uint8_t *bc_buf);
48int lre_exec(uint8_t **capture,
49 const uint8_t *bc_buf, const uint8_t *cbuf, int cindex, int clen,
50 int cbuf_type, void *opaque);
51
52int lre_parse_escape(const uint8_t **pp, int allow_utf16);
53
54/* must be provided by the user, return non zero if overflow */
55int lre_check_stack_overflow(void *opaque, size_t alloca_size);
56/* must be provided by the user, return non zero if time out */
57int lre_check_timeout(void *opaque);
58void *lre_realloc(void *opaque, void *ptr, size_t size);
59
60#endif /* LIBREGEXP_H */
61