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WebSVN – planix.SVN – Blame – /os/branches/feature-vt/sys/src/cmd/aquarela/smbrep.c – Rev 2

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#include "headers.h"
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int
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smbmatch(char *name, Reprog *rep)
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{
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	Resub sub;
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	sub.sp = nil;
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	sub.ep = nil;
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	if (regexec(rep, name, &sub, 1) && sub.sp == name && *sub.ep == 0)
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		return 1;
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	return 0;
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}
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Reprog *
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smbmkrep(char *pattern)
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{
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	Reprog *r;
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	int l;
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	char *tmp, *p, *q, *t;
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	l = strlen(pattern);
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	tmp = smbemalloc(l * 5 + 1);
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	t = tmp;
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	p = pattern;
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	while (*p) {
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		if (*p == '*') {
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			if (p[1] == '.') {
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				strcpy(t, "[^.]*");
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				t += 5;
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				p++;
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			}
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			else {
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				*t++ = '.';
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				*t++ = '*';
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				p++;
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			}
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		}
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		else if (*p == '?') {
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			for (q = p + 1; *q && *q == '?'; q++)
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				;
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			if (*q == 0 || *q == '.') {
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				/* at most n copies */
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				strcpy(t, "[^.]?");
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				t += 5;
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				p++;
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			}
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			else {
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				/* exactly n copies */
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				strcpy(t, "[^.]");
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				t += 4;
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				p++;
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			}
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		}
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		else if (strchr(".+{}()|\\^$", *p) != 0) {
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			/* regexp meta */
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			*t++ = '\\';
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			*t++ = *p++;
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		}
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		else
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			*t++ = *p++;
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	}
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	*t = 0;
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	smblogprintif(smbglobals.log.rep, "%s => %s\n", pattern, tmp);
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	r = regcomp(tmp);
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	free(tmp);
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	return r;
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}
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