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libsrc/common/strtok.c

@@ -0,0 +1,77 @@
+/*
+ * strtok.c
+ *
+ * Ullrich von Bassewitz, 11.12.1998
+ */
+
+
+
+#include <string.h>
+
+
+
+/*****************************************************************************/
+/*		    		     Data				     */
+/*****************************************************************************/
+
+
+
+/* Memory location that holds the last input */
+static char* Last = 0;
+
+
+
+/*****************************************************************************/
+/*	       	 		     Code				     */
+/*****************************************************************************/
+
+
+
+char* strtok (char* s1, const char* s2)
+{
+    char c;
+    char* start;
+
+    /* Use the stored location if called with a NULL pointer */
+    if (s1 == 0) {
+     	s1 = Last;
+    }
+
+    /* If s1 is empty, there are no more tokens. Return 0 in this case. */
+    if (*s1 == '\0') {
+     	return 0;
+    }
+
+    /* Search the address of the first element in s1 that equals none
+     * of the characters in s2.
+     */
+    while ((c = *s1) && strchr (s2, c) != 0) {
+     	++s1;
+    }
+    if (c == '\0') {
+     	/* No more tokens found */
+     	Last = s1;
+     	return 0;
+    }
+
+    /* Remember the start of the token */
+    start = s1;
+
+    /* Search for the end of the token */
+    while ((c = *s1) && strchr (s2, c) == 0) {
+     	++s1;
+    }
+    if (c == '\0') {
+     	/* Last element */
+     	Last = s1;
+    } else {
+     	*s1 = '\0';
+     	Last = s1 + 1;
+    }
+
+    /* Return the start of the token */
+    return start;
+}
+
+
+