From 0915b3ef56dfac3113cce55a59a5765dc94976be Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 14:34:54 +0200 Subject: Adding upstream version 2.13.6. Signed-off-by: Daniel Baumann --- third-party/mmatch/mmatch.c | 309 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 309 insertions(+) create mode 100644 third-party/mmatch/mmatch.c (limited to 'third-party/mmatch/mmatch.c') diff --git a/third-party/mmatch/mmatch.c b/third-party/mmatch/mmatch.c new file mode 100644 index 0000000..b68f1bf --- /dev/null +++ b/third-party/mmatch/mmatch.c @@ -0,0 +1,309 @@ +/* + * IRC - Internet Relay Chat, common/match.c + * Copyright (C) 1990 Jarkko Oikarinen + * + * 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * $Id: Match.cpp,v 1.2 2005/08/15 10:08:50 shroud23 Exp $ + */ + +#include +#include "mmatch.h" + +#define ToLower tolower + +/* + * mmatch() + * + * Written by Run (carlo@runaway.xs4all.nl), 25-10-96 + * + * + * From: Carlo Wood + * Message-Id: <199609021026.MAA02393@runaway.xs4all.nl> + * Subject: [C-Com] Analysis for `mmatch' (was: gline4 problem) + * To: coder-com@mail.undernet.org (coder committee) + * Date: Mon, 2 Sep 1996 12:26:01 +0200 (MET DST) + * + * We need a new function `mmatch(const char *old_mask, const char *new_mask)' + * which returns `true' likewise the current `match' (start with copying it), + * but which treats '*' and '?' in `new_mask' differently (not "\*" and "\?" !) + * as follows: a '*' in `new_mask' does not match a '?' in `old_mask' and + * a '?' in `new_mask' does not match a '\?' in `old_mask'. + * And ofcourse... a '*' in `new_mask' does not match a '\*' in `old_mask'... + * And last but not least, '\?' and '\*' in `new_mask' now become one character. + */ + +#if 0 +int mmatch(const char *old_mask, const char *new_mask) +{ + const char *m = old_mask; + const char *n = new_mask; + const char *ma = m; + const char *na = n; + int wild = 0; + int mq = 0, nq = 0; + + while (1) + { + if (*m == '*') + { + while (*m == '*') + m++; + wild = 1; + ma = m; + na = n; + } + + if (!*m) + { + if (!*n) + return 0; + for (m--; (m > old_mask) && (*m == '?'); m--) + ; + if ((*m == '*') && (m > old_mask) && (m[-1] != '\\')) + return 0; + if (!wild) + return 1; + m = ma; + + /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ + if ((*na == '\\') && ((na[1] == '*') || (na[1] == '?'))) + ++na; + + n = ++na; + } + else if (!*n) + { + while (*m == '*') + m++; + return (*m != 0); + } + if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?'))) + { + m++; + mq = 1; + } + else + mq = 0; + + /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ + if ((*n == '\\') && ((n[1] == '*') || (n[1] == '?'))) + { + n++; + nq = 1; + } + else + nq = 0; + +/* + * This `if' has been changed compared to match() to do the following: + * Match when: + * old (m) new (n) boolean expression + * * any (*m == '*' && !mq) || + * ? any except '*' (*m == '?' && !mq && (*n != '*' || nq)) || + * any except * or ? same as m (!((*m == '*' || *m == '?') && !mq) && + * ToLower(*m) == ToLower(*n) && + * !((mq && !nq) || (!mq && nq))) + * + * Here `any' also includes \* and \? ! + * + * After reworking the boolean expressions, we get: + * (Optimized to use boolean shortcircuits, with most frequently occuring + * cases upfront (which took 2 hours!)). + */ + if ((*m == '*' && !mq) || + ((!mq || nq) && ToLower(*m) == ToLower(*n)) || + (*m == '?' && !mq && (*n != '*' || nq))) + { + if (*m) + m++; + if (*n) + n++; + } + else + { + if (!wild) + return 1; + m = ma; + + /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ + if ((*na == '\\') && ((na[1] == '*') || (na[1] == '?'))) + ++na; + + n = ++na; + } + } +} +#endif + +/* + * Compare if a given string (name) matches the given + * mask (which can contain wild cards: '*' - match any + * number of chars, '?' - match any single character. + * + * return 0, if match + * 1, if no match + */ + +/* + * match + * + * Rewritten by Andrea Cocito (Nemesi), November 1998. + * + */ + +/****************** Nemesi's match() ***************/ + +int match(const char *mask, const char *str) +{ + const char *m = mask, *s = str; + char ch; + const char *bm, *bs; /* Will be reg anyway on a decent CPU/compiler */ + + /* Process the "head" of the mask, if any */ + while ((ch = *m++) && (ch != '*')) + switch (ch) + { + case '\\': + if (*m == '?' || *m == '*') + ch = *m++; + default: + if (ToLower(*s) != ToLower(ch)) + return 1; + case '?': + if (!*s++) + return 1; + }; + if (!ch) + return *s; + + /* We got a star: quickly find if/where we match the next char */ +got_star: + bm = m; /* Next try rollback here */ + while ((ch = *m++)) + switch (ch) + { + case '?': + if (!*s++) + return 1; + case '*': + bm = m; + continue; /* while */ + case '\\': + if (*m == '?' || *m == '*') + ch = *m++; + default: + goto break_while; /* C is structured ? */ + }; +break_while: + if (!ch) + return 0; /* mask ends with '*', we got it */ + ch = ToLower(ch); + if (!*s) /* String is already empty, don't continue */ + return 1; /* This fixes the #quakenet access denied bug */ + while (ToLower(*s++) != ch) + if (!*s) + return 1; + bs = s; /* Next try start from here */ + + /* Check the rest of the "chunk" */ + while ((ch = *m++)) + { + switch (ch) + { + case '*': + goto got_star; + case '\\': + if (*m == '?' || *m == '*') + ch = *m++; + default: + if (ToLower(*s) != ToLower(ch)) + { + /* If we've run out of string, give up */ + if (!*bs) + return 1; + m = bm; + s = bs; + goto got_star; + }; + case '?': + if (!*s++) + return 1; + }; + }; + if (*s) + { + m = bm; + s = bs; + goto got_star; + }; + return 0; +} + +/* + * collapse() + * Collapse a pattern string into minimal components. + * This particular version is "in place", so that it changes the pattern + * which is to be reduced to a "minimal" size. + * + * (C) Carlo Wood - 6 Oct 1998 + * Speedup rewrite by Andrea Cocito, December 1998. + * Note that this new optimized alghoritm can *only* work in place. + */ + +#if 0 +char *collapse(char *pattern) +{ + int star = 0; + char *m = pattern; + char *b; + + if (m) + { + do + { + if ((*m == '*') && ((m[1] == '*') || (m[1] == '?'))) + { + b = m; + do + { + if (*m == '*') + star = 1; + else + { + if (star && (*m != '?')) + { + *b++ = '*'; + star = 0; + }; + *b++ = *m; + if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?'))) + *b++ = *++m; + }; + } + while (*m++); + break; + } + else + { + if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?'))) + m++; + }; + } + while (*m++); + }; + return pattern; +} +#endif -- cgit v1.2.3