1 files changed, 89 insertions, 0 deletions
diff --git a/imap/src/osdep/tops-20/pmatch.c b/imap/src/osdep/tops-20/pmatch.c
new file mode 100644
index 00000000..95a0bb86
--- /dev/null
+++ b/imap/src/osdep/tops-20/pmatch.c
@@ -0,0 +1,89 @@
+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 
+ * ========================================================================
+ */
+
+/*
+ * Program:	IMAP Wildcard Matching Routines (case-independent)
+ *
+ * Author:	Mark Crispin
+ *		Networks and Distributed Computing
+ *		Computing & Communications
+ *		University of Washington
+ *		Administration Building, AG-44
+ *		Seattle, WA  98195
+ *		Internet: MRC@CAC.Washington.EDU
+ *
+ * Date:	15 June 2000
+ * Last Edited:	30 August 2006
+ */
+
+/* Wildcard pattern match
+ * Accepts: base string
+ *	    pattern string
+ *	    delimiter character
+ * Returns: T if pattern matches base, else NIL
+ */
+
+long pmatch_full (unsigned char *s,unsigned char *pat,unsigned char delim)
+{
+  switch (*pat) {
+  case '%':			/* non-recursive */
+				/* % at end, OK if no inferiors */
+    if (!pat[1]) return (delim && strchr (s,delim)) ? NIL : T;
+                                /* scan remainder of string until delimiter */
+    do if (pmatch_full (s,pat+1,delim)) return T;
+    while ((*s != delim) && *s++);
+    break;
+  case '*':			/* match 0 or more characters */
+    if (!pat[1]) return T;	/* * at end, unconditional match */
+				/* scan remainder of string */
+    do if (pmatch_full (s,pat+1,delim)) return T;
+    while (*s++);
+    break;
+  case '\0':			/* end of pattern */
+    return *s ? NIL : T;	/* success if also end of base */
+  default:			/* match this character */
+    return compare_uchar (*pat,*s) ? NIL : pmatch_full (s+1,pat+1,delim);
+  }
+  return NIL;
+}
+
+/* Directory pattern match
+ * Accepts: base string
+ *	    pattern string
+ *	    delimiter character
+ * Returns: T if base is a matching directory of pattern, else NIL
+ */
+
+long dmatch (unsigned char *s,unsigned char *pat,unsigned char delim)
+{
+  switch (*pat) {
+  case '%':			/* non-recursive */
+    if (!*s) return T;		/* end of base means have a subset match */
+    if (!*++pat) return NIL;	/* % at end, no inferiors permitted */
+				/* scan remainder of string until delimiter */
+    do if (dmatch (s,pat,delim)) return T;
+    while ((*s != delim) && *s++);
+    if (*s && !s[1]) return T;	/* ends with delimiter, must be subset */
+    return dmatch (s,pat,delim);/* do new scan */
+  case '*':			/* match 0 or more characters */
+    return T;			/* unconditional match */
+  case '\0':			/* end of pattern */
+    break;
+  default:			/* match this character */
+    if (*s) return compare_uchar (*pat,*s) ? NIL : dmatch (s+1,pat+1,delim);
+				/* end of base, return if at delimiter */
+    else if (*pat == delim) return T;
+    break;
+  }
+  return NIL;
+}