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static bool
do_convert(iconv_t cd, const char * src, int src_len,
char ** dst, int *dst_len)
{
char * ret;
char *inbuf;
char *outbuf;
int alloc_size;
int output_pos;
size_t inbytesleft;
size_t outbytesleft;
if(src_len < 0)
src_len = strlen(src);
#if 0
fprintf(stderr, "Converting:\n");
bgav_hexdump(src, src_len, 16);
#endif
alloc_size = src_len + BYTES_INCREMENT;
inbytesleft = src_len;
/* We reserve space here to add a final '\0' */
outbytesleft = alloc_size-1;
ret = malloc(alloc_size);
inbuf = (char *)src;
outbuf = ret;
while(1)
{
if(iconv(cd, (ICONV_CONST char **)&inbuf, &inbytesleft,
&outbuf, &outbytesleft) == (size_t)-1)
{
switch(errno)
{
case E2BIG:
output_pos = (int)(outbuf - ret);
alloc_size += BYTES_INCREMENT;
outbytesleft += BYTES_INCREMENT;
ret = realloc(ret, alloc_size);
if (ret == NULL)
{
cdio_warn("Can't realloc(%d).", alloc_size);
return false;
}
outbuf = ret + output_pos;
break;
default:
cdio_warn("Iconv failed: %s", strerror(errno));
if (ret != NULL)
free(ret);
return false;
break;
}
}
if(!inbytesleft)
break;
}
/* Zero terminate */
*outbuf = '\0';
/* Set return values */
*dst = ret;
if(dst_len)
*dst_len = (int)(outbuf - ret);
#if 0
fprintf(stderr, "Conversion done, src:\n");
bgav_hexdump(src, src_len, 16);
fprintf(stderr, "dst:\n");
bgav_hexdump((uint8_t*)(ret), (int)(outbuf - ret), 16);
#endif
return true;
}