Changes in uspace/lib/c/generic/str.c [568693b:be2a38ad] in mainline

File:

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

uspace/lib/c/generic/str.c

@@ -134 +134 @@
         
         return ch;
-}
-
-/** Decode a single character from a string to the left.
- *
- * Decode a single character from a string of size @a size. Decoding starts
- * at @a offset and this offset is moved to the beginning of the previous
- * character. In case of decoding error, offset generally decreases at least
- * by one. However, offset is never moved before 0.
- *
- * @param str    String (not necessarily NULL-terminated).
- * @param offset Byte offset in string where to start decoding.
- * @param size   Size of the string (in bytes).
- *
- * @return Value of decoded character, U_SPECIAL on decoding error or
- *         NULL if attempt to decode beyond @a start of str.
- *
- */
-wchar_t str_decode_reverse(const char *str, size_t *offset, size_t size)
-{
-        if (*offset == 0)
-                return 0;
-        
-        size_t processed = 0;
-        /* Continue while continuation bytes found */
-        while (*offset > 0 && processed < 4) {
-                uint8_t b = (uint8_t) str[--(*offset)];
-                
-                if (processed == 0 && (b & 0x80) == 0) {
-                        /* 0xxxxxxx (Plain ASCII) */
-                        return b & 0x7f;
-                }
-                else if ((b & 0xe0) == 0xc0 || (b & 0xf0) == 0xe0 ||
-                    (b & 0xf8) == 0xf0) {
-                        /* Start byte */
-                        size_t start_offset = *offset;
-                        return str_decode(str, &start_offset, size);
-                }
-                else if ((b & 0xc0) != 0x80) {
-                        /* Not a continuation byte */
-                        return U_SPECIAL;
-                }
-                processed++;
-        }
-        /* Too many continuation bytes */
-        return U_SPECIAL;
 }