A new wildcard-matching routine to replace the fnmatch code.

1 files changed, 96 insertions, 0 deletions

diff --git a/lib/wildmatch.c b/lib/wildmatch.c
new file mode 100644
index 00000000..bce9545e
--- /dev/null
+++ b/lib/wildmatch.c
@@ -0,0 +1,96 @@
+/*
+**  Do shell-style pattern matching for ?, \, [], and * characters.
+**  It is 8bit clean.
+**
+**  Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986.
+**  Rich $alz is now <rsalz@bbn.com>.
+**
+**  Modified by Wayne Davison to special-case '/' matching and to fix
+**  the character-class code.
+*/
+
+#include "rsync.h"
+
+/* What character marks an inverted character class? */
+#define NEGATE_CLASS '!'
+
+#define false 0
+#define true 1
+
+/* Look for pattern "p" in the "text" string. */
+int
+wildmatch(const char *p, const char *text)
+{
+    int matched, special;
+    char ch, prev;
+
+    for ( ; (ch = *p) != '\0'; text++, p++) {
+	if (*text == '\0' && ch != '*')
+	    return false;
+	switch (ch) {
+	  case '\\':
+	    /* Literal match with following character.  Note that the test
+	     * in "default" handles the p[1] == '\0' failure case. */
+	    ch = *++p;
+	    /* FALLTHROUGH */
+	  default:
+	    if (*text != ch)
+		return false;
+	    continue;
+	  case '?':
+	    /* Match anything but '/'. */
+	    if (*text == '/')
+		return false;
+	    continue;
+	  case '*':
+	    if (*++p == '*') {
+		while (*++p == '*') {}
+		special = true;
+	    }
+	    else
+		special = false;
+	    if (*p == '\0') {
+		/* Trailing "**" matches everything. */
+		return special? true : strchr(text, '/') == 0;
+	    }
+	    for ( ; *text; text++) {
+		if (wildmatch(p, text))
+		    return true;
+		if (!special && *text == '/')
+		    return false;
+	    }
+	    return false;
+	  case '[':
+	    special = *++p == NEGATE_CLASS ? true : false;
+	    if (special) {
+		/* Inverted character class. */
+		p++;
+	    }
+	    prev = 0;
+	    matched = false;
+	    ch = *p;
+	    if (ch == ']' || ch == '-') {
+		if (*text == ch)
+		    matched = true;
+		prev = ch;
+		ch = *++p;
+	    }
+	    for ( ; ch != ']'; prev = ch, ch = *++p) {
+		if (!ch)
+		    return false;
+		if (ch == '-' && prev && p[1] && p[1] != ']') {
+		    if (*text <= *++p && *text >= prev)
+			matched = true;
+		    ch = 0;
+		}
+		else if (*text == ch)
+		    matched = true;
+	    }
+	    if (matched == special)
+		return false;
+	    continue;
+	}
+    }
+
+    return *text == '\0';
+}