mirror of
https://github.com/Jous99/F4MP.git
synced 2026-01-12 16:50:54 +01:00
93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
// file: header/regex.h
|
|
|
|
/** @file regex.c
|
|
@brief Regular expressions parser.
|
|
@defgroup regex Regex processor
|
|
|
|
Port of gb_regex with several bugfixes applied. This is a simple regex library and is fast to perform.
|
|
|
|
Supported Matching:
|
|
@n ^ - Beginning of string
|
|
@n $ - End of string
|
|
@n . - Match one (anything)
|
|
@n | - Branch (or)
|
|
@n () - Capturing group
|
|
@n [] - Any character included in set
|
|
@n [^] - Any character excluded from set
|
|
@n + - One or more (greedy)
|
|
@n +? - One or more (non-greedy)
|
|
@n * - Zero or more (greedy)
|
|
@n *? - Zero or more (non-greedy)
|
|
@n ? - Zero or once
|
|
@n [BACKSLASH]XX - Hex decimal digit (must be 2 digits)
|
|
@n [BACKSLASH]meta - Meta character
|
|
@n [BACKSLASH]s - Whitespace
|
|
@n [BACKSLASH]S - Not whitespace
|
|
@n [BACKSLASH]d - Digit
|
|
@n [BACKSLASH]D - Not digit
|
|
@n [BACKSLASH]a - Alphabetic character
|
|
@n [BACKSLASH]l - Lower case letter
|
|
@n [BACKSLASH]u - Upper case letter
|
|
@n [BACKSLASH]w - Word
|
|
@n [BACKSLASH]W - Not word
|
|
@n [BACKSLASH]x - Hex Digit
|
|
@n [BACKSLASH]p - Printable ASCII character
|
|
@n --Whitespace--
|
|
@n [BACKSLASH]t - Tab
|
|
@n [BACKSLASH]n - New line
|
|
@n [BACKSLASH]r - Return carriage
|
|
@n [BACKSLASH]v - Vertical Tab
|
|
@n [BACKSLASH]f - Form feed
|
|
|
|
@{
|
|
*/
|
|
#ifdef ZPL_EDITOR
|
|
#include <zpl.h>
|
|
#endif
|
|
|
|
ZPL_BEGIN_C_DECLS
|
|
|
|
typedef struct zpl_re {
|
|
zpl_allocator backing;
|
|
zpl_isize capture_count;
|
|
char *buf;
|
|
zpl_isize buf_len, buf_cap;
|
|
zpl_b32 can_realloc;
|
|
} zpl_re;
|
|
|
|
typedef struct zpl_re_capture {
|
|
char const *str;
|
|
zpl_isize len;
|
|
} zpl_re_capture;
|
|
|
|
#define zplRegexError zpl_regex_error
|
|
typedef enum zpl_regex_error {
|
|
ZPL_RE_ERROR_NONE,
|
|
ZPL_RE_ERROR_NO_MATCH,
|
|
ZPL_RE_ERROR_TOO_LONG,
|
|
ZPL_RE_ERROR_MISMATCHED_CAPTURES,
|
|
ZPL_RE_ERROR_MISMATCHED_BLOCKS,
|
|
ZPL_RE_ERROR_BRANCH_FAILURE,
|
|
ZPL_RE_ERROR_INVALID_QUANTIFIER,
|
|
ZPL_RE_ERROR_INTERNAL_FAILURE,
|
|
} zpl_regex_error;
|
|
|
|
//! Compile regex pattern.
|
|
ZPL_DEF zpl_regex_error zpl_re_compile(zpl_re *re, zpl_allocator backing, char const *pattern, zpl_isize pattern_len);
|
|
|
|
//! Compile regex pattern using a buffer.
|
|
ZPL_DEF zpl_regex_error zpl_re_compile_from_buffer(zpl_re *re, char const *pattern, zpl_isize pattern_len, void *buffer, zpl_isize buffer_len);
|
|
|
|
//! Destroy regex object.
|
|
ZPL_DEF void zpl_re_destroy(zpl_re *re);
|
|
|
|
//! Retrieve number of retrievable captures.
|
|
ZPL_DEF zpl_isize zpl_re_capture_count(zpl_re *re);
|
|
|
|
//! Match input string and output captures of the occurence.
|
|
ZPL_DEF zpl_b32 zpl_re_match(zpl_re *re, char const *str, zpl_isize str_len, zpl_re_capture *captures, zpl_isize max_capture_count, zpl_isize *offset);
|
|
|
|
//! Match all occurences in an input string and output them into captures. Array of captures is allocated on the heap and needs to be freed afterwards.
|
|
ZPL_DEF zpl_b32 zpl_re_match_all(zpl_re *re, char const *str, zpl_isize str_len, zpl_isize max_capture_count, zpl_re_capture **out_captures);
|
|
|
|
ZPL_END_C_DECLS
|