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/**
* vim: set ts=4 :
* =============================================================================
* SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This file is part of the SourceMod/SourcePawn SDK.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or <http://www.sourcemod.net/license.php>.
*
* Version: $Id$
*/
#if defined _regex_included
#endinput
#endif
#define _regex_included
/**
* @section Flags for compiling regex expressions. These come directly from the
* pcre library and can be used in MatchRegex and CompileRegex.
*/
#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_UCP 0x20000000 /* Use Unicode properties for \ed, \ew, etc. */
/**
* Regex expression error codes.
*/
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,
};
/**
* Precompile a regular expression. Use this if you intend on using the
* same expression multiple times. Pass the regex handle returned here to
* MatchRegex to check for matches.
*
* @param pattern The regular expression pattern.
* @param flags General flags for the regular expression.
* @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 on success, INVALID_HANDLE on failure.
*/
native Handle:CompileRegex(const String:pattern[], flags = 0, String:error[]="", maxLen = 0, &RegexError:errcode = REGEX_ERROR_NONE);
/**
* Matches a string against a pre-compiled regular expression pattern.
*
* @param str The string to check.
* @param regex Regex Handle from CompileRegex()
* @param ret Error code, if applicable.
* @return Number of substrings found or -1 on failure.
*
* @note Use the regex handle passed to this function to extract
* matches with GetRegexSubString().
*/
native MatchRegex(Handle:regex, const String:str[], &RegexError:ret = REGEX_ERROR_NONE);
/**
* Returns a matched substring from a regex handle.
* Substring ids start at 0 and end at substrings-1, where substrings is the number returned
* by MatchRegex
*
* @param regex The regex handle to extract data from.
* @param str_id The index of the expression to get - starts at 0, and ends at substrings - 1.
* @param buffer The buffer to set to the matching substring.
* @param maxlen The maximum string length of the buffer.
* @return True if a substring was found, False on fail/error
*/
native bool:GetRegexSubString(Handle:regex, str_id, String:buffer[], maxlen);
/**
* Matches a string against a regular expression pattern.
*
* @note If you intend on using the same regular expression pattern
* multiple times, consider using CompileRegex and MatchRegex
* 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 Number of substrings found or -1 on failure.
*/
stock SimpleRegexMatch(const String:str[], const String:pattern[], flags = 0, String:error[]="", maxLen = 0)
{
new Handle:regex = CompileRegex(pattern, flags, error, maxLen);
if (regex == INVALID_HANDLE)
{
return -1;
}
new substrings = MatchRegex(regex, str);
CloseHandle(regex);
return substrings;
}
/**
* @endsection
*/
/**
* Do not edit below this line!
*/
public Extension:__ext_regex =
{
name = "Regex Extension",
file = "regex.ext",
#if defined AUTOLOAD_EXTENSIONS
autoload = 1,
#else
autoload = 0,
#endif
#if defined REQUIRE_EXTENSIONS
required = 1,
#else
required = 0,
#endif
};
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