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69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*
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This file is part of Fennix C Library.
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Fennix C Library is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef _REGEX_H
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#define _REGEX_H
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#include <sys/types.h>
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#include <stddef.h>
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typedef struct
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{
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size_t re_nsub; /* Number of parenthesized subexpressions */
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} regex_t;
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typedef ptrdiff_t regoff_t;
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typedef struct
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{
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regoff_t rm_so; /* Byte offset to start of substring */
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regoff_t rm_eo; /* Byte offset after end of substring */
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} regmatch_t;
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/* Flags for regcomp() */
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#define REG_EXTENDED 0x01 /* Use Extended Regular Expressions */
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#define REG_ICASE 0x02 /* Case-insensitive matching */
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#define REG_MINIMAL 0x04 /* Leftmost shortest match (for REG_EXTENDED) */
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#define REG_NOSUB 0x08 /* Suppress subexpression reporting */
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#define REG_NEWLINE 0x10 /* Alter newline handling */
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/* Flags for regexec() */
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#define REG_NOTBOL 0x01 /* ^ does not match start of string */
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#define REG_NOTEOL 0x02 /* $ does not match end of string */
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/* Error codes */
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#define REG_NOMATCH 1 /* No match found */
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#define REG_BADPAT 2 /* Invalid regular expression */
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#define REG_ECOLLATE 3 /* Invalid collating element */
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#define REG_ECTYPE 4 /* Invalid character class */
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#define REG_EESCAPE 5 /* Trailing backslash */
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#define REG_ESUBREG 6 /* Invalid backreference */
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#define REG_EBRACK 7 /* Unbalanced '[]' */
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#define REG_EPAREN 8 /* Unbalanced '()' */
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#define REG_EBRACE 9 /* Unbalanced '{}' */
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#define REG_BADBR 10 /* Invalid content in {} */
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#define REG_ERANGE 11 /* Invalid range endpoint */
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#define REG_ESPACE 12 /* Memory exhaustion */
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#define REG_BADRPT 13 /* Invalid repetition operator */
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int regcomp(regex_t *restrict preg, const char *restrict pattern, int cflags);
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size_t regerror(int errcode, const regex_t *restrict preg, char *restrict errbuf, size_t errbuf_size);
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int regexec(const regex_t *restrict preg, const char *restrict string, size_t nmatch, regmatch_t pmatch[restrict], int eflags);
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void regfree(regex_t *preg);
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#endif /* _REGEX_H */
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