*****************************************************************************
*
*****************************************************************************/
-static inline char *vlc_b64_encode( char *src )
+static inline char *vlc_b64_encode( const char *src )
{
static const char b64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
while( len > 0 )
{
- /* pops (up to) 3 bytes of input */
- uint32_t v = *src++ << 24;
+ /* pops (up to) 3 bytes of input, push 4 bytes */
+ uint32_t v = *src++ << 24; // 1/3
+ *dst++ = b64[v >> 26]; // 1/4
+ v = v << 6;
if( len >= 2 )
- {
- v |= *src++ << 16;
- if( len >= 3 )
- v |= *src++ << 8;
- }
+ v |= *src++ << 16; // 2/3
+ *dst++ = b64[v >> 26]; // 2/4
+ v = v << 6;
- /* pushes (up to) 4 bytes of output */
- while( v )
- {
- *dst++ = b64[v >> 26];
- v = v << 6;
- }
+ if( len >= 3 )
+ v |= *src++ << 8; // 3/3
+ *dst++ = ( len >= 2 ) ? b64[v >> 26] : '='; // 3/4
+ v = v << 6;
- switch( len )
+ *dst++ = ( len >= 3 ) ? b64[v >> 26] : '='; // 4/4
+
+ len--;
+ if( len > 0 )
{
- case 1:
- *dst++ = '=';
- *dst++ = '=';
+ len--;
+ if( len > 0 )
len--;
- break;
-
- case 2:
- *dst++ = '=';
- len -= 2;
- break;
-
- default:
- len -= 3;
}
}
#include <stdio.h>
#include <stdlib.h>
-void test_decode (const char *in, const char *out)
+typedef char * (*conv_t) (const char *);
+
+static void test (conv_t f, const char *in, const char *out)
{
char *res;
printf ("\"%s\" -> \"%s\" ?\n", in, out);
- res = decode_URI_duplicate (in);
+ res = f (in);
if (res == NULL)
exit (1);
if (strcmp (res, out))
+ {
+ printf (" ERROR: got \"%s\"\n", res);
exit (2);
+ }
free (res);
}
+static inline void test_decode (const char *in, const char *out)
+{
+ test (decode_URI_duplicate, in, out);
+}
+
+static inline void test_b64 (const char *in, const char *out)
+{
+ test (vlc_b64_encode, in, out);
+}
+
int main (void)
{
(void)setvbuf (stdout, NULL, _IONBF, 0);
test_decode ("T%E9l%E9vision", "T?l?vision");
test_decode ("%C1%94%C3%a9l%c3%A9vision", "??élévision"); /* overlong */
+ /* Base 64 tests */
+ test_b64 ("", "");
+ test_b64 ("d", "ZA==");
+ test_b64 ("ab", "YQG=");
+ test_b64 ("abc", "YQGI");
+ test_b64 ("abcd", "YQGIZA==");
+
return 0;
}