| /* |
| * Regular Expression Engine |
| * |
| * Copyright (c) 2017-2018 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #ifndef LIBREGEXP_H |
| #define LIBREGEXP_H |
| |
| #include <stddef.h> |
| |
| #include "libunicode.h" |
| |
| #define LRE_BOOL int /* for documentation purposes */ |
| |
| #define LRE_FLAG_GLOBAL (1 << 0) |
| #define LRE_FLAG_IGNORECASE (1 << 1) |
| #define LRE_FLAG_MULTILINE (1 << 2) |
| #define LRE_FLAG_DOTALL (1 << 3) |
| #define LRE_FLAG_UTF16 (1 << 4) |
| #define LRE_FLAG_STICKY (1 << 5) |
| |
| #define LRE_FLAG_NAMED_GROUPS (1 << 7) /* named groups are present in the regexp */ |
| |
| uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size, |
| const char *buf, size_t buf_len, int re_flags, |
| void *opaque); |
| int lre_get_capture_count(const uint8_t *bc_buf); |
| int lre_get_flags(const uint8_t *bc_buf); |
| const char *lre_get_groupnames(const uint8_t *bc_buf); |
| int lre_exec(uint8_t **capture, |
| const uint8_t *bc_buf, const uint8_t *cbuf, int cindex, int clen, |
| int cbuf_type, void *opaque); |
| |
| int lre_parse_escape(const uint8_t **pp, int allow_utf16); |
| LRE_BOOL lre_is_space(int c); |
| |
| /* must be provided by the user */ |
| LRE_BOOL lre_check_stack_overflow(void *opaque, size_t alloca_size); |
| void *lre_realloc(void *opaque, void *ptr, size_t size); |
| |
| /* JS identifier test */ |
| extern uint32_t const lre_id_start_table_ascii[4]; |
| extern uint32_t const lre_id_continue_table_ascii[4]; |
| |
| static inline int lre_js_is_ident_first(int c) |
| { |
| if ((uint32_t)c < 128) { |
| return (lre_id_start_table_ascii[c >> 5] >> (c & 31)) & 1; |
| } else { |
| #ifdef CONFIG_ALL_UNICODE |
| return lre_is_id_start(c); |
| #else |
| return !lre_is_space(c); |
| #endif |
| } |
| } |
| |
| static inline int lre_js_is_ident_next(int c) |
| { |
| if ((uint32_t)c < 128) { |
| return (lre_id_continue_table_ascii[c >> 5] >> (c & 31)) & 1; |
| } else { |
| /* ZWNJ and ZWJ are accepted in identifiers */ |
| #ifdef CONFIG_ALL_UNICODE |
| return lre_is_id_continue(c) || c == 0x200C || c == 0x200D; |
| #else |
| return !lre_is_space(c) || c == 0x200C || c == 0x200D; |
| #endif |
| } |
| } |
| |
| #undef LRE_BOOL |
| |
| #endif /* LIBREGEXP_H */ |