Changeset 3daf1979 in mainline for uspace/lib/c/generic/str.c

Timestamp:

2014-06-30T20:30:24Z (11 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

23ce2d9

Parents:

1bdf307d (diff), ee3f6f6 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge str_tok().

File:

• uspace/lib/c/generic/str.c (modified) (1 diff)

uspace/lib/c/generic/str.c

@@ -1360 +1360 @@
 }
 
-char *strtok(char *s, const char *delim)
-{
-        static char *next;
-
-        return strtok_r(s, delim, &next);
-}
-
-char *strtok_r(char *s, const char *delim, char **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 *str_tok(char *s, const char *delim, char **next)
 {
         char *start, *end;
 
-        if (s == NULL)
-                s = *next;
+        if (!s)
+                return NULL;
+        
+        size_t len = str_size(s);
+        size_t cur;
+        size_t tmp;
+        wchar_t ch;
 
         /* Skip over leading delimiters. */
-        while (*s && (str_chr(delim, *s) != NULL)) ++s;
-        start = s;
+        for (tmp = cur = 0;
+            (ch = str_decode(s, &tmp, len)) && str_chr(delim, ch); /**/)
+                cur = tmp;
+        start = &s[cur];
 
         /* Skip over token characters. */
-        while (*s && (str_chr(delim, *s) == NULL)) ++s;
-        end = s;
-        *next = (*s ? s + 1 : s);
-
-        if (start == end) {
+        for (tmp = cur;
+            (ch = str_decode(s, &tmp, len)) && !str_chr(delim, ch); /**/)
+                cur = tmp;
+        end = &s[cur];
+        if (next)
+                *next = (ch ? &s[tmp] : &s[cur]);
+
+        if (start == end)
                 return NULL;    /* No more tokens. */
-        }
 
         /* Overwrite delimiter with NULL terminator. */