Changes in uspace/lib/posix/source/string.c [fdf97f6:12b29f3] in mainline

File:

• uspace/lib/posix/source/string.c (modified) (1 diff)

uspace/lib/posix/source/string.c

@@ -508 +508 @@
         
         return NULL;
+}
+
+/** Split string by delimiters.
+ *
+ * @param s             String to be tokenized. May not be NULL.
+ * @param delim         String with the delimiters.
+ * @return              Pointer to the prefix of @a s before the first
+ *                      delimiter character. NULL if no such prefix
+ *                      exists.
+ */
+char *posix_strtok(char *s, const char *delim)
+{
+        static char *next;
+
+        return posix_strtok_r(s, delim, &next);
+}
+
+
+/** Split string by delimiters.
+ *
+ * @param s             String to be tokenized. May not be NULL.
+ * @param delim         String with the delimiters.
+ * @param next          Variable which will receive the pointer to the
+ *                      continuation of the string following the first
+ *                      occurrence of any of the delimiter characters.
+ *                      May be NULL.
+ * @return              Pointer to the prefix of @a s before the first
+ *                      delimiter character. NULL if no such prefix
+ *                      exists.
+ */
+char *posix_strtok_r(char *s, const char *delim, char **next)
+{
+        char *start, *end;
+
+        if (s == NULL)
+                s = *next;
+
+        /* Skip over leading delimiters. */
+        while (*s && (posix_strchr(delim, *s) != NULL)) ++s;
+        start = s;
+
+        /* Skip over token characters. */
+        while (*s && (posix_strchr(delim, *s) == NULL)) ++s;
+        end = s;
+        *next = (*s ? s + 1 : s);
+
+        if (start == end) {
+                return NULL;    /* No more tokens. */
+        }
+
+        /* Overwrite delimiter with NULL terminator. */
+        *end = '\0';
+        return start;
 }