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| author | Tavian Barnes <tavianator@tavianator.com> | 2024-05-27 16:56:43 -0400 |
|---|---|---|
| committer | Tavian Barnes <tavianator@tavianator.com> | 2024-05-28 12:54:50 -0400 |
| commit | fa24499735018e2cb81a6a76aa8b5e72695fb8ad (patch) | |
| tree | f71f584533af2e2c5a3065b5fba058bc8d1ebc91 /src/xregex.c | |
| parent | 3043922abacf5d9e7bdfc7cfc48d9d1652927c29 (diff) | |
| download | bfs-fa24499735018e2cb81a6a76aa8b5e72695fb8ad.tar.xz | |
Implement the remaining regex types
Closes: https://github.com/tavianator/bfs/issues/21
Diffstat (limited to 'src/xregex.c')
| -rw-r--r-- | src/xregex.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/xregex.c b/src/xregex.c index 414c366..2d089b2 100644 --- a/src/xregex.c +++ b/src/xregex.c @@ -37,7 +37,11 @@ struct bfs_regex { static int bfs_onig_status; static OnigEncoding bfs_onig_enc; +static OnigSyntaxType bfs_onig_syntax_awk; +static OnigSyntaxType bfs_onig_syntax_gnu_awk; static OnigSyntaxType bfs_onig_syntax_emacs; +static OnigSyntaxType bfs_onig_syntax_egrep; +static OnigSyntaxType bfs_onig_syntax_gnu_find; /** pthread_once() callback. */ static void bfs_onig_once(void) { @@ -106,9 +110,34 @@ static void bfs_onig_once(void) { bfs_onig_enc = NULL; } + // Compute the GNU extensions + OnigSyntaxType *ere = ONIG_SYNTAX_POSIX_EXTENDED; + OnigSyntaxType *gnu = ONIG_SYNTAX_GNU_REGEX; + unsigned int gnu_op = gnu->op & ~ere->op; + unsigned int gnu_op2 = gnu->op2 & ~ere->op2; + unsigned int gnu_behavior = gnu->behavior & ~ere->behavior; + + onig_copy_syntax(&bfs_onig_syntax_awk, ONIG_SYNTAX_POSIX_EXTENDED); + bfs_onig_syntax_awk.behavior |= ONIG_SYN_ALLOW_INVALID_INTERVAL; + bfs_onig_syntax_awk.behavior |= ONIG_SYN_BACKSLASH_ESCAPE_IN_CC; + + onig_copy_syntax(&bfs_onig_syntax_gnu_awk, &bfs_onig_syntax_awk); + bfs_onig_syntax_gnu_awk.op |= gnu_op; + bfs_onig_syntax_gnu_awk.op2 |= gnu_op2; + bfs_onig_syntax_gnu_awk.behavior |= gnu_behavior; + bfs_onig_syntax_gnu_awk.behavior &= ~ONIG_SYN_CONTEXT_INDEP_REPEAT_OPS; + bfs_onig_syntax_gnu_awk.behavior &= ~ONIG_SYN_CONTEXT_INVALID_REPEAT_OPS; + // https://github.com/kkos/oniguruma/issues/296 onig_copy_syntax(&bfs_onig_syntax_emacs, ONIG_SYNTAX_EMACS); bfs_onig_syntax_emacs.op2 |= ONIG_SYN_OP2_QMARK_GROUP_EFFECT; + + onig_copy_syntax(&bfs_onig_syntax_egrep, ONIG_SYNTAX_POSIX_EXTENDED); + bfs_onig_syntax_egrep.behavior |= ONIG_SYN_ALLOW_INVALID_INTERVAL; + bfs_onig_syntax_egrep.behavior &= ~ONIG_SYN_CONTEXT_INVALID_REPEAT_OPS; + + onig_copy_syntax(&bfs_onig_syntax_gnu_find, &bfs_onig_syntax_emacs); + bfs_onig_syntax_gnu_find.options |= ONIG_OPTION_MULTILINE; } /** Initialize Oniguruma. */ @@ -149,12 +178,24 @@ int bfs_regcomp(struct bfs_regex **preg, const char *pattern, enum bfs_regex_typ case BFS_REGEX_POSIX_EXTENDED: syntax = ONIG_SYNTAX_POSIX_EXTENDED; break; + case BFS_REGEX_AWK: + syntax = &bfs_onig_syntax_awk; + break; + case BFS_REGEX_GNU_AWK: + syntax = &bfs_onig_syntax_gnu_awk; + break; case BFS_REGEX_EMACS: syntax = &bfs_onig_syntax_emacs; break; case BFS_REGEX_GREP: syntax = ONIG_SYNTAX_GREP; break; + case BFS_REGEX_EGREP: + syntax = &bfs_onig_syntax_egrep; + break; + case BFS_REGEX_GNU_FIND: + syntax = &bfs_onig_syntax_gnu_find; + break; } bfs_assert(syntax, "Invalid regex type"); |