1 files changed, 67 insertions, 0 deletions
diff --git a/imap/src/ansilib/strtok.c b/imap/src/ansilib/strtok.c
new file mode 100644
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+++ b/imap/src/ansilib/strtok.c
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+/* ========================================================================
+ * Copyright 1988-2007 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:	String return successive tokens
+ *
+ * Author:	Mark Crispin
+ *		Networks and Distributed Computing
+ *		Computing & Communications
+ *		University of Washington
+ *		Administration Building, AG-44
+ *		Seattle, WA  98195
+ *
+ * Date:	11 May 1989
+ * Last Edited:	30 January 2007
+ */
+
+/* Find token in string
+ * Accepts: source pointer or NIL to use previous source
+ *	    vector of token delimiters pointer
+ * Returns: pointer to next token
+ */
+
+static char *state = NIL;	/* string to locate tokens */
+
+char *strtok (char *s,char *ct)
+{
+  return strtok_r (s,ct,&state);/* jacket into reentrant routine */
+}
+
+
+/* Find token in string (reentrant)
+ * Accepts: source pointer or NIL to use previous source
+ *	    vector of token delimiters pointer
+ *	    returned state pointer
+ * Returns: pointer to next token
+ */
+
+char *strtok_r (char *s,char *ct,char **r)
+{   
+  char *t,*ts;
+  if (!s) s = *r;		/* use previous token if none specified */
+  *r = NIL;			/* default to no returned state */
+  if (!(s && *s)) return NIL;	/* no tokens left */
+				/* find any leading delimiters */
+  do for (t = ct, ts = NIL; *t; t++) if (*t == *s) {
+    if (*(ts = ++s)) break;	/* yes, restart search if more in string */
+    return NIL;			/* else no more tokens */
+  } while (ts);			/* continue until no more leading delimiters */
+				/* can we find a new delimiter? */
+  for (ts = s; *ts; ts++) for (t = ct; *t; t++) if (*t == *ts) {
+    *ts++ = '\0';		/* yes, tie off token at that point */
+    *r = ts;			/* save subsequent tokens for future call */
+    return s;			/* return our token */
+  }
+  return s;			/* return final token */
+}