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+/*
+ * $Id$
+ *
+ * Copyright (c) 1994, 1995. Netscape Communications Corporation. All
+ * rights reserved.
+ *
+ * Use of this software is governed by the terms of the license agreement for
+ * the Netscape Communications or Netscape Comemrce Server between the
+ * parties.
+ */
+
+
+/* ------------------------------------------------------------------------ */
+
+
+/*
+ * shexp.h: Defines and prototypes for shell exp. match routines
+ *
+ *
+ * This routine will match a string with a shell expression. The expressions
+ * accepted are based loosely on the expressions accepted by zsh.
+ *
+ * o * matches anything
+ * o ? matches one character
+ * o \ will escape a special character
+ * o $ matches the end of the string
+ * o [abc] matches one occurrence of a, b, or c. The only character that needs
+ * to be escaped in this is ], all others are not special.
+ * o [a-z] matches any character between a and z
+ * o [^az] matches any character except a or z
+ * o ~ followed by another shell expression will remove any pattern
+ * matching the shell expression from the match list
+ * o (foo|bar) will match either the substring foo, or the substring bar.
+ * These can be shell expressions as well.
+ *
+ * The public interface to these routines is documented below.
+ *
+ * Rob McCool
+ *
+ */
+
+#ifndef SHEXP_H
+#define SHEXP_H
+
+/*
+ * Requires that the macro MALLOC be set to a "safe" malloc that will
+ * exit if no memory is available. If not under MCC httpd, define MALLOC
+ * to be the real malloc and play with fire, or make your own function.
+ */
+
+#include "../netsite.h"
+
+#include <ctype.h> /* isalnum */
+#include <string.h> /* strlen */
+
+
+
+/* --------------------------- Public routines ---------------------------- */
+
+
+/*
+ * shexp_valid takes a shell expression exp as input. It returns:
+ *
+ * NON_SXP if exp is a standard string
+ * INVALID_SXP if exp is a shell expression, but invalid
+ * VALID_SXP if exp is a valid shell expression
+ */
+
+#define NON_SXP -1
+#define INVALID_SXP -2
+#define VALID_SXP 1
+
+int shexp_valid(char *exp);
+
+/*
+ * shexp_match
+ *
+ * Takes a prevalidated shell expression exp, and a string str.
+ *
+ * Returns 0 on match and 1 on non-match.
+ */
+
+int shexp_match(char *str, char *exp);
+
+
+/*
+ * shexp_cmp
+ *
+ * Same as above, but validates the exp first. 0 on match, 1 on non-match,
+ * -1 on invalid exp. shexp_casecmp does the same thing but is case
+ * insensitive.
+ */
+
+int shexp_cmp(char *str, char *exp);
+int shexp_casecmp(char *str, char *exp);
+
+#endif