/*
* Convert "quoted-printable" to binary. Returns number of bytes decoded.
* according to RFC2045 section 6.7
*/
int CtdlDecodeQuotedPrintable(char *decoded, char *encoded, int sourcelen) {
unsigned int ch;
int decoded_length = 0;
int pos = 0;
while (pos < sourcelen)
{
if (*(encoded + pos) == '=')
{
pos ++;
if (*(encoded + pos) == '\n')
{
pos ++;
}
else if (*(encoded + pos) == '\r')
{
pos ++;
if (*(encoded + pos) == '\n')
pos++;
}
else
{
ch = _decode_hex(&encoded[pos]);
pos += 2;
decoded[decoded_length++] = ch;
}
}
else
{
decoded[decoded_length++] = encoded[pos];
pos += 1;
}
}
decoded[decoded_length] = 0;
return(decoded_length);
}
static const char *parse_string(cJSON *item,const char *str)
{
const char *ptr=str+1;char *ptr2;char *out;int32_t len=0;unsigned uc,uc2;
if (*str!='\"') {ep=str;return 0;} /* not a string! */
while (*ptr!='\"' && *ptr && ++len) if (*ptr++ == '\\') ptr++; // Skip escaped quotes
out=(char*)cJSON_malloc(len+2); /* This is how long we need for the string, roughly. */
if (!out) return 0;
ptr=str+1;ptr2=out;
while (*ptr!='\"' && *ptr)
{
if (*ptr!='\\')
{
if ( *ptr == '%' && is_hexstr((char *)&ptr[1],2) && isprint(_decode_hex((char *)&ptr[1])) != 0 )
*ptr2++ = _decode_hex((char *)&ptr[1]), ptr += 3;
else *ptr2++ = *ptr++;
}
else
{
ptr++;
switch (*ptr)
{
case 'b': *ptr2++='\b'; break;
case 'f': *ptr2++='\f'; break;
case 'n': *ptr2++='\n'; break;
case 'r': *ptr2++='\r'; break;
case 't': *ptr2++='\t'; break;
case 'u': // transcode utf16 to utf8
uc=parse_hex4(ptr+1);ptr+=4; // get the unicode char
if ((uc>=0xDC00 && uc<=0xDFFF) || uc==0) break; // check for invalid
if (uc>=0xD800 && uc<=0xDBFF) // UTF16 surrogate pairs
{
if (ptr[1]!='\\' || ptr[2]!='u') break; // missing second-half of surrogate.
uc2=parse_hex4(ptr+3);ptr+=6;
if (uc2<0xDC00 || uc2>0xDFFF) break; // invalid second-half of surrogate
uc=0x10000 + (((uc&0x3FF)<<10) | (uc2&0x3FF));
}
len=4;if (uc<0x80) len=1;else if (uc<0x800) len=2;else if (uc<0x10000) len=3; ptr2+=len;
switch (len) {
case 4: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
case 3: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
case 2: *--ptr2 =((uc | 0x80) & 0xBF); uc >>= 6;
case 1: *--ptr2 =(uc | firstByteMark[len]);
}
ptr2+=len;
break;
default: *ptr2++=*ptr; break;
}
ptr++;
}
}
*ptr2=0;
if (*ptr=='\"') ptr++;
item->valuestring=out;
item->type=cJSON_String;
return ptr;
}
unsigned int decode_hex(char *Source) {return _decode_hex(Source);}
