GitHub/amxmodx
2
0
Fork 0
mirror of https://github.com/alliedmodders/amxmodx.git synced 2024-10-18 08:17:01 +03:00
Code Issues Projects Releases Wiki Activity
ee4f6b8a89
amxmodx/plugins/include/regex.inc

302 lines
12 KiB
PHP
Executable File
Raw Blame History

/**
* Regular Expressions API
* By the AMX Mod X Development Team
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* this program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* In addition, as a special exception, the author gives permission to
* link the code of this program with the Half-Life Game Engine ("HL
* Engine") and Modified Game Libraries ("MODs") developed by Valve,
* L.L.C ("Valve"). You must obey the GNU General Public License in all
* respects for all of the code used other than the HL Engine and MODs
* from Valve. If you modify this file, you may extend this exception
* to your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from your
* version.
*/
#if defined _regex_included
#endinput
#endif
#define _regex_included
#if AMXX_VERSION_NUM >= 175
#pragma reqlib regex
#if !defined AMXMODX_NOAUTOLOAD
#pragma loadlib regex
#endif
#else
#pragma library regex
#endif
enum Regex
{
REGEX_MATCH_FAIL = -2,
REGEX_PATTERN_FAIL,
REGEX_NO_MATCH,
REGEX_OK
};
/**
* Precompile a regular expression.
*
* @note Use this if you intend on using the ame expression multiple times.
* Pass the regex handle returned here to regex_match_c to check for matches.
*
* @note This handle is automatically freed on map change. However,
* if you are completely done with it before then, you should
* call regex_free on this handle.
*
* @param pattern The regular expression pattern.
* @param ret Error code encountered, if applicable.
* @param error Error message encountered, if applicable.
* @param maxLen Maximum string length of the error buffer.
* @param flags General flags for the regular expression.
* i = Ignore case
* m = Multilines (affects ^ and $ so that they match
* the start/end of a line rather than matching the
* start/end of the string).
* s = Single line (affects . so that it matches any character,
* even new line characters).
* x = Pattern extension (ignore whitespace and # comments).
*
* @return -1 on error in the pattern, > valid regex handle (> 0) on success.
*/
native Regex:regex_compile(const pattern[], &ret, error[], maxLen, const flags[]="");
/**
* Matches a string against a pre-compiled regular expression pattern.
*
* @note You should free the returned handle with regex_free()
* when you are done with this pattern.
*
* @note Use the regex handle passed to this function to extract
* matches with regex_substr().
*
* @param string The string to check.
* @param pattern The regular expression pattern.
* @param ret Error code, if applicable, or number of results on success.
*
* @return -2 = Matching error (error code is stored in ret)
* 0 = No match.
* >1 = Number of results.
*/
native regex_match_c(const string[], Regex:pattern, &ret);
/**
* Matches a string against a regular expression pattern.
*
* @note If you intend on using the same regular expression pattern
* multiple times, consider using regex_compile and regex_match_ex
* instead of making this function reparse the expression each time.
*
* @note Flags only exist in amxmodx 1.8 and later.
*
* @note You should free the returned handle with regex_free()
* when you are done extracting all of the substrings.
*
* @param string The string to check.
* @param pattern The regular expression pattern.
* @param ret Error code, or result state of the match.
* @param error Error message, if applicable.
* @param maxLen Maximum length of the error buffer.
* @param flags General flags for the regular expression.
* i = Ignore case
* m = Multilines (affects ^ and $ so that they match
* the start/end of a line rather than matching the
* start/end of the string).
* s = Single line (affects . so that it matches any character,
* even new line characters).
* x = Pattern extension (ignore whitespace and # comments).
*
* @return -2 = Matching error (error code is stored in ret)
* -1 = Error in pattern (error message and offset # in error and ret)
* 0 = No match.
* >1 = Handle for getting more information (via regex_substr)
*/
native Regex:regex_match(const string[], const pattern[], &ret, error[], maxLen, const flags[] = "");
/**
* Returns a matched substring from a regex handle.
*
* @note Substring ids start at 0 and end at ret - 1, where ret is from the corresponding
* regex_match, regex_match_c or regex_match_ex function call.
*
* @param id The regex handle to extract data from.
* @param str_id The index of the expression to get - starts at 0, and ends at ret - 1.
* @param buffer The buffer to set to the matching substring.
* @param maxLen The maximum string length of the buffer.
*
* @return 1 on success, otherwise 0 on failure.
*/
native regex_substr(Regex:id, str_id, buffer[], maxLen);
/**
* Frees the memory associated with a regex result, and sets the handle to 0.
*
* @note This must be called on all results from regex_match() when you are done extracting
* the results with regex_substr().
*
* @note The results of regex_compile() or regex_compile_ex() (and subsequently, regex_match_c() or regex_match_ex())
* only need to be freed when you are done using the pattern.
*
* @note Do not use the handle again after freeing it!
*
* @param id The regex handle to free.
* @noreturn
*/
native regex_free(&Regex:id);
/**
* The following natives are only available in 1.8.3 and above.
*/
/**
* Flags for compiling regex expressions.
* These come directly from the pcre library and can be used in regex_compile_ex.
*/
#define PCRE_CASELESS 0x00000001 /* Ignore Case */
#define PCRE_MULTILINE 0x00000002 /* Multilines (affects ^ and $ so that they match the start/end of a line rather than matching the start/end of the string). */
#define PCRE_DOTALL 0x00000004 /* Single line (affects . so that it matches any character, even new line characters). */
#define PCRE_EXTENDED 0x00000008 /* Pattern extension (ignore whitespace and # comments). */
#define PCRE_ANCHORED 0x00000010 /* Force pattern anchoring. */
#define PCRE_DOLLAR_ENDONLY 0x00000020 /* $ not to match newline at end. */
#define PCRE_UNGREEDY 0x00000200 /* Invert greediness of quantifiers */
#define PCRE_NOTEMPTY 0x00000400 /* An empty string is not a valid match. */
#define PCRE_UTF8 0x00000800 /* Use UTF-8 Chars */
#define PCRE_NO_UTF8_CHECK 0x00002000 /* Do not check the pattern for UTF-8 validity (only relevant if PCRE_UTF8 is set) */
#define PCRE_FIRSTLINE 0x00040000 /* Force matching to be before newline */
#define PCRE_DUPNAMES 0x00080000 /* Allow duplicate names for subpattern */
#define PCRE_UCP 0x20000000 /* Use Unicode properties for \ed, \ew, etc. */
/**
* Regex expression error codes.
* This can be used with regex_compile_ex and regex_match_ex.
*/
enum RegexError
{
REGEX_ERROR_NONE = 0, /* No error */
REGEX_ERROR_NOMATCH = -1, /* No match was found */
REGEX_ERROR_NULL = -2,
REGEX_ERROR_BADOPTION = -3,
REGEX_ERROR_BADMAGIC = -4,
REGEX_ERROR_UNKNOWN_OPCODE = -5,
REGEX_ERROR_NOMEMORY = -6,
REGEX_ERROR_NOSUBSTRING = -7,
REGEX_ERROR_MATCHLIMIT = -8,
REGEX_ERROR_CALLOUT = -9, /* Never used by PCRE itself */
REGEX_ERROR_BADUTF8 = -10,
REGEX_ERROR_BADUTF8_OFFSET = -11,
REGEX_ERROR_PARTIAL = -12,
REGEX_ERROR_BADPARTIAL = -13,
REGEX_ERROR_INTERNAL = -14,
REGEX_ERROR_BADCOUNT = -15,
REGEX_ERROR_DFA_UITEM = -16,
REGEX_ERROR_DFA_UCOND = -17,
REGEX_ERROR_DFA_UMLIMIT = -18,
REGEX_ERROR_DFA_WSSIZE = -19,
REGEX_ERROR_DFA_RECURSE = -20,
REGEX_ERROR_RECURSIONLIMIT = -21,
REGEX_ERROR_NULLWSLIMIT = -22, /* No longer actually used */
REGEX_ERROR_BADNEWLINE = -23,
REGEX_ERROR_BADOFFSET = -24,
REGEX_ERROR_SHORTUTF8 = -25,
REGEX_ERROR_RECURSELOOP = -26,
REGEX_ERROR_JIT_STACKLIMIT = -27,
REGEX_ERROR_BADMODE = -28,
REGEX_ERROR_BADENDIANNESS = -29,
REGEX_ERROR_DFA_BADRESTART = -30,
REGEX_ERROR_JIT_BADOPTION = -31,
REGEX_ERROR_BADLENGTH = -32,
REGEX_ERROR_UNSET = -33
};
/**
* Precompile a regular expression.
*
* @note Use this if you intend on using the ame expression multiple times.
* Pass the regex handle returned here to regex_match_ex() to check for matches.
*
* @note Unlike regex_compile(), this allows you to use directly PCRE flags, and
* to get a more complete set of regular expression error codes.
*
* @param pattern The regular expression pattern.
* @param flags General flags for the regular expression, see PCRE_* defines.
* @param error Error message encountered, if applicable.
* @param maxLen Maximum string length of the error buffer.
* @param errcode Regex type error code encountered, if applicable.
*
* @return Valid regex handle (> 0) on success, or -1 on failure.
*/
native Regex:regex_compile_ex(const pattern[], flags = 0, error[]= "", maxLen = 0, &RegexError:errcode = REGEX_ERROR_NONE);
/**
* Matches a string against a pre-compiled regular expression pattern.
*
* @note Use the regex handle passed to this function to extract
* matches with regex_substr().
*
* @note You should free the returned handle with regex_free()
* when you are done with this pattern.
*
* @note Unlike regex_match_c(), this allows you to get a more complete
* set of regular expression error codes and parameter is optional.
*
* @param str The string to check.
* @param regex Regex Handle from regex_compile_ex()
* @param ret Error code, if applicable.
*
* @return -2 = Matching error (error code is stored in ret)
* 0 = No match.
* >1 = Number of results.
*/
native regex_match_ex(Handle:regex, const str[], &RegexError:ret = REGEX_ERROR_NONE);
/**
* Matches a string against a regular expression pattern.
*
* @note If you intend on using the same regular expression pattern
* multiple times, consider using compile regex_compilex_ex and regex_match_ex
* instead of making this function reparse the expression each time.
*
* @param str The string to check.
* @param pattern The regular expression pattern.
* @param flags General flags for the regular expression.
* @param error Error message, if applicable.
* @param maxLen Maximum length of the error buffer.
*
* @return -2 = Matching error (error code is stored in ret)
* -1 = Pattern error (error code is stored in ret)
* 0 = No match.
* >1 = Number of results.
*/
stock regex_match_simple(const str[], const pattern[], flags = 0, error[]="", maxLen = 0)
{
new Regex:regex = regex_compile_ex(pattern, flags, error, maxLen);
if (regex < 0)
{
return -1;
}
new substrings = regex_match_ex(regex, str);
regex_free(regex);
return substrings;
}
Reference in New Issue View Git Blame Copy Permalink