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authorJannis Hoffmann <jannis@fehcom.de>2024-07-09 11:44:11 +0200
committerJannis Hoffmann <jannis@fehcom.de>2024-07-09 11:44:11 +0200
commitf1b71c9fe7dbb4886588a036399cf5ebe16b7c47 (patch)
treee07786aa479c9fb6ee3e537078470aaab5454f80 /sqmail-4.3.07/src/wildmat.c
parenta293489ee83c8b05d845a162dc2a4de026f3775d (diff)
removed top level directory
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diff --git a/sqmail-4.3.07/src/wildmat.c b/sqmail-4.3.07/src/wildmat.c
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-/*** wildmat.c.orig Wed Dec 3 11:46:31 1997 */
-/* $Revision: 1.1 $
-**
-** Do shell-style pattern matching for ?, \, [], and * characters.
-** Might not be robust in face of malformed patterns; e.g., "foo[a-"
-** could cause a segmentation violation. It is 8bit clean.
-**
-** Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986.
-** Rich $alz is now <rsalz@osf.org>.
-** April, 1991: Replaced mutually-recursive calls with in-line code
-** for the star character.
-**
-** Special thanks to Lars Mathiesen <thorinn@diku.dk> for the ABORT code.
-** This can greatly speed up failing wildcard patterns. For example:
-** pattern: -*-*-*-*-*-*-12-*-*-*-m-*-*-*
-** text 1: -adobe-courier-bold-o-normal--12-120-75-75-m-70-iso8859-1
-** text 2: -adobe-courier-bold-o-normal--12-120-75-75-X-70-iso8859-1
-** Text 1 matches with 51 calls, while text 2 fails with 54 calls. Without
-** the ABORT code, it takes 22310 calls to fail. Ugh. The following
-** explanation is from Lars:
-** The precondition that must be fulfilled is that DoMatch will consume
-** at least one character in text. This is true if *p is neither '*' nor
-** '\0'.) The last return has ABORT instead of FALSE to avoid quadratic
-** behaviour in cases like pattern "*a*b*c*d" with text "abcxxxxx". With
-** FALSE, each star-loop has to run to the end of the text; with ABORT
-** only the last one does.
-**
-** Once the control of one instance of DoMatch enters the star-loop, that
-** instance will return either TRUE or ABORT, and any calling instance
-** will therefore return immediately after (without calling recursively
-** again). In effect, only one star-loop is ever active. It would be
-** possible to modify the code to maintain this context explicitly,
-** eliminating all recursive calls at the cost of some complication and
-** loss of clarity (and the ABORT stuff seems to be unclear enough by
-** itself). I think it would be unwise to try to get this into a
-** released version unless you have a good test data base to try it out
-** on.
-*/
-
-#define TRUE 1
-#define FALSE 0
-#define ABORT -1
-
-/* What character marks an inverted character class? */
-#define NEGATE_CLASS '^'
-/* Is "*" a common pattern? */
-#define OPTIMIZE_JUST_STAR
-/* Do tar(1) matching rules, which ignore a trailing slash? */
-#undef MATCH_TAR_PATTERN
-
-/*
-** Match text and p, return TRUE, FALSE, or ABORT.
-*/
-static int DoMatch(register char *text, register char *p)
-{
- register int last;
- register int matched;
- register int reverse;
-
- for (; *p; text++, p++) {
- if (*text == '\0' && *p != '*')
- return ABORT;
- switch (*p) {
- case '\\': /* Literal match with following character. */
- p++;
- case '?': /* Match anything. */
- continue;
- case '*': /* Consecutive stars act just like one. */
- while (*++p == '*')
- continue;
- if (*p == '\0') return TRUE; /* Trailing star matches everything. */
- while (*text)
- if ((matched = DoMatch(text++, p)) != FALSE) return matched;
- return ABORT;
- case '[':
- reverse = p[1] == NEGATE_CLASS ? TRUE : FALSE;
- if (reverse) p++; /* Inverted character class. */
- matched = FALSE;
- if (p[1] == ']' || p[1] == '-')
- if (*++p == *text) matched = TRUE;
- for (last = *p; *++p && *p != ']'; last = *p) /* This next line requires a good C compiler. */
- if (*p == '-' && p[1] != ']' ? *text <= *++p && *text >= last : *text == *p)
- matched = TRUE;
- if (matched == reverse) return FALSE;
- continue;
- default: /* FALLTHROUGH */
- if (*text != *p) return FALSE;
- continue;
- }
- }
-
-#ifdef MATCH_TAR_PATTERN
- if (*text == '/')
- return TRUE;
-#endif /* MATCH_TAR_ATTERN */
- return *text == '\0';
-}
-
-/*
-** User-level routine. Returns TRUE or FALSE.
-*/
-int wildmat(char *text,char *p)
-{
-#ifdef OPTIMIZE_JUST_STAR
- if (p[0] == '*' && p[1] == '\0')
- return TRUE;
-#endif /* OPTIMIZE_JUST_STAR */
- return DoMatch(text, p) == TRUE;
-}