| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "log2journal.h" |
| 4 | |
| 5 | void search_pattern_cleanup(SEARCH_PATTERN *sp) { |
| 6 | if(sp->pattern) { |
| 7 | freez((void *)sp->pattern); |
| 8 | sp->pattern = NULL; |
| 9 | } |
| 10 | |
| 11 | if(sp->re) { |
| 12 | pcre2_code_free(sp->re); |
| 13 | sp->re = NULL; |
| 14 | } |
| 15 | |
| 16 | if(sp->match_data) { |
| 17 | pcre2_match_data_free(sp->match_data); |
| 18 | sp->match_data = NULL; |
| 19 | } |
| 20 | |
| 21 | txt_l2j_cleanup(&sp->error); |
| 22 | } |
| 23 | |
| 24 | static void pcre2_error_message(SEARCH_PATTERN *sp, int rc, int pos) { |
| 25 | char msg[1024]; |
| 26 | pcre2_get_error_in_buffer(msg, sizeof(msg), rc, pos); |
| 27 | txt_l2j_set(&sp->error, msg, strlen(msg)); |
| 28 | } |
| 29 | |
| 30 | static inline bool compile_pcre2(SEARCH_PATTERN *sp) { |
| 31 | int error_number; |
| 32 | PCRE2_SIZE error_offset; |
| 33 | PCRE2_SPTR pattern_ptr = (PCRE2_SPTR)sp->pattern; |
| 34 | |
| 35 | sp->re = pcre2_compile(pattern_ptr, PCRE2_ZERO_TERMINATED, 0, &error_number, &error_offset, NULL); |
| 36 | if (!sp->re) { |
| 37 | pcre2_error_message(sp, error_number, (int) error_offset); |
| 38 | return false; |
| 39 | } |
| 40 | |
| 41 | return true; |
| 42 | } |
| 43 | |
| 44 | bool search_pattern_set(SEARCH_PATTERN *sp, const char *search_pattern, size_t search_pattern_len) { |
| 45 | search_pattern_cleanup(sp); |
| 46 | |
| 47 | sp->pattern = strndupz(search_pattern, search_pattern_len); |
| 48 | if (!compile_pcre2(sp)) |
| 49 | return false; |
| 50 | |
| 51 | sp->match_data = pcre2_match_data_create_from_pattern(sp->re, NULL); |
| 52 | |
| 53 | return true; |
| 54 | } |