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5 * =============================================================================
7 * This file is part of the SourceMod/SourcePawn SDK.
9 * This program is free software; you can redistribute it and/or modify it under
10 * the terms of the GNU General Public License, version 3.0, as published by the
11 * Free Software Foundation.
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15 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
18 * You should have received a copy of the GNU General Public License along with
19 * this program. If not, see <http://www.gnu.org/licenses/>.
21 * As a special exception, AlliedModders LLC gives you permission to link the
22 * code of this program (as well as its derivative works) to "Half-Life 2," the
23 * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
24 * by the Valve Corporation. You must obey the GNU General Public License in
25 * all respects for all other code used. Additionally, AlliedModders LLC grants
26 * this exception to all derivative works. AlliedModders LLC defines further
27 * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
28 * or <http://www.sourcemod.net/license.php>.
33 #if defined _regex_included
36 #define _regex_included
39 * @section Flags for compiling regex expressions. These come directly from the
40 * pcre library and can be used in MatchRegex and CompileRegex.
42 #define PCRE_CASELESS 0x00000001 /* Ignore Case */
43 #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). */
44 #define PCRE_DOTALL 0x00000004 /* Single line (affects . so that it matches any character, even new line characters). */
45 #define PCRE_EXTENDED 0x00000008 /* Pattern extension (ignore whitespace and # comments). */
46 #define PCRE_UNGREEDY 0x00000200 /* Invert greediness of quantifiers */
47 #define PCRE_UTF8 0x00000800 /* Use UTF-8 Chars */
48 #define PCRE_NO_UTF8_CHECK 0x00002000 /* Do not check the pattern for UTF-8 validity (only relevant if PCRE_UTF8 is set) */
52 * Regex expression error codes.
56 REGEX_ERROR_NONE = 0, /* No error */
57 REGEX_ERROR_NOMATCH = -1, /* No match was found */
58 REGEX_ERROR_NULL = -2,
59 REGEX_ERROR_BADOPTION = -3,
60 REGEX_ERROR_BADMAGIC = -4,
61 REGEX_ERROR_UNKNOWN_OPCODE = -5,
62 REGEX_ERROR_NOMEMORY = -6,
63 REGEX_ERROR_NOSUBSTRING = -7,
64 REGEX_ERROR_MATCHLIMIT = -8,
65 REGEX_ERROR_CALLOUT = -9, /* Never used by PCRE itself */
66 REGEX_ERROR_BADUTF8 = -10,
67 REGEX_ERROR_BADUTF8_OFFSET = -11,
68 REGEX_ERROR_PARTIAL = -12,
69 REGEX_ERROR_BADPARTIAL = -13,
70 REGEX_ERROR_INTERNAL = -14,
71 REGEX_ERROR_BADCOUNT = -15,
72 REGEX_ERROR_DFA_UITEM = -16,
73 REGEX_ERROR_DFA_UCOND = -17,
74 REGEX_ERROR_DFA_UMLIMIT = -18,
75 REGEX_ERROR_DFA_WSSIZE = -19,
76 REGEX_ERROR_DFA_RECURSE = -20,
77 REGEX_ERROR_RECURSIONLIMIT = -21,
78 REGEX_ERROR_NULLWSLIMIT = -22, /* No longer actually used */
79 REGEX_ERROR_BADNEWLINE = -23
83 * Precompile a regular expression. Use this if you intend on using the
84 * same expression multiple times. Pass the regex handle returned here to
85 * MatchRegex to check for matches.
87 * @param pattern The regular expression pattern.
88 * @param flags General flags for the regular expression.
89 * @param error Error message encountered, if applicable.
90 * @param maxLen Maximum string length of the error buffer.
91 * @param errcode Regex type error code encountered, if applicable.
92 * @return Valid regex handle on success, INVALID_HANDLE on failure.
94 native Handle:CompileRegex(const String:pattern[], flags = 0, String:error[]="", maxLen = 0, &RegexError:errcode = REGEX_ERROR_NONE);
97 * Matches a string against a pre-compiled regular expression pattern.
99 * @param str The string to check.
100 * @param regex Regex Handle from CompileRegex()
101 * @param ret Error code, if applicable.
102 * @return Number of substrings found or -1 on failure.
104 * @note Use the regex handle passed to this function to extract
105 * matches with GetRegexSubString().
107 native MatchRegex(Handle:regex, const String:str[], &RegexError:ret = REGEX_ERROR_NONE);
110 * Returns a matched substring from a regex handle.
111 * Substring ids start at 0 and end at substrings-1, where substrings is the number returned
114 * @param regex The regex handle to extract data from.
115 * @param str_id The index of the expression to get - starts at 0, and ends at substrings - 1.
116 * @param buffer The buffer to set to the matching substring.
117 * @param maxLen The maximum string length of the buffer.
118 * @return True if a substring was found, False on fail/error
120 native bool:GetRegexSubString(Handle:regex, str_id, String:buffer[], maxlen);
123 * Matches a string against a regular expression pattern.
125 * @note If you intend on using the same regular expression pattern
126 * multiple times, consider using CompileRegex and MatchRegex
127 * instead of making this function reparse the expression each time.
129 * @param str The string to check.
130 * @param pattern The regular expression pattern.
131 * @param flags General flags for the regular expression.
132 * @param error Error message, if applicable.
133 * @param maxLen Maximum length of the error buffer.
134 * @return Number of substrings found or -1 on failure.
136 stock SimpleRegexMatch(const String:str[], const String:pattern[], flags = 0, String:error[]="", maxLen = 0)
138 new Handle:regex = CompileRegex(pattern, flags, error, maxLen);
140 if (regex == INVALID_HANDLE)
145 new substrings = MatchRegex(regex, str);
157 * Do not edit below this line!
159 public Extension:__ext_regex =
161 name = "Regex Extension",
163 #if defined AUTOLOAD_EXTENSIONS
168 #if defined REQUIRE_EXTENSIONS
