#include "striconveha.h"
#include "unistr.h"
-int
+char *
u8_conv_to_encoding (const char *tocode,
enum iconv_ilseq_handler handler,
const uint8_t *src, size_t srclen,
size_t *offsets,
- char **resultp, size_t *lengthp)
+ char *resultbuf, size_t *lengthp)
{
- char *result;
-
if (STRCASEEQ (tocode, "UTF-8", 'U','T','F','-','8',0,0,0,0))
{
+ char *result;
+
/* Conversion from UTF-8 to UTF-8. No need to go through iconv(). */
#if CONFIG_UNICODE_SAFETY
if (u8_check (src, srclen))
{
errno = EILSEQ;
- return -1;
+ return NULL;
}
#endif
/* Memory allocation. */
- if ((*resultp != NULL && *lengthp >= srclen) || srclen == 0)
- result = *resultp;
+ if (resultbuf != NULL && *lengthp >= srclen)
+ result = resultbuf;
else
{
- result = (char *) malloc (srclen);
+ result = (char *) malloc (srclen > 0 ? srclen : 1);
if (result == NULL)
{
errno = ENOMEM;
- return -1;
+ return NULL;
}
}
memcpy (result, (const char *) src, srclen);
- *resultp = result;
*lengthp = srclen;
- return 0;
+ return result;
}
else
- return mem_iconveha ((const char *) src, srclen,
- "UTF-8", tocode,
- handler == iconveh_question_mark, handler,
- offsets, resultp, lengthp);
+ {
+ char *result = resultbuf;
+ size_t length = *lengthp;
+
+ if (mem_iconveha ((const char *) src, srclen,
+ "UTF-8", tocode,
+ handler == iconveh_question_mark, handler,
+ offsets, &result, &length) < 0)
+ return NULL;
+
+ if (result == NULL) /* when (resultbuf == NULL && length == 0) */
+ {
+ result = (char *) malloc (1);
+ if (result == NULL)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ }
+ *lengthp = length;
+ return result;
+ }
}