int UTF16ToUTF8(unsigned char *out, int *outlen, const unsigned char *inb, int *inlenb) {     unsigned char* outstart = out;     const unsigned char* processed = inb;     unsigned char* outend = out + *outlen;     unsigned short* in = (unsigned short*) inb;     unsigned short* inend;     unsigned int c, d, inlen;     unsigned char *tmp;     int bits;         int isLittleEndian = 1;     if((*inlenb % 2) == 1) (*inlenb)--;     inlen = *inlenb / 2;     inend = in + inlen;     while((in < inend) && (out - outstart + 5 < *outlen))     {         if(isLittleEndian)         {             c= *in++;         }         else         {             tmp = (unsigned char *) in;             c   = *tmp++;             c   = c | (((unsigned int)*tmp) << 8);             in++;         }         if((c & 0xFC00) == 0xD800)         {             if(in >= inend) break;             if(isLittleEndian) { d = *in++; }             else             {                 tmp = (unsigned char *) in;                 d   = *tmp++;                 d   = d | (((unsigned int)*tmp) << 8);                 in++;             }             if((d & 0xFC00) == 0xDC00)             {                 c &= 0x03FF;                 c <<= 10;                 c |= d & 0x03FF;                 c += 0x10000;             }             else             {                 *outlen = out - outstart;                 *inlenb = processed - inb;                 return -1;             }         }         if(out >= outend)    break;         if     (c <    0x80) { *out++ =  c;                        bits= -6; }         else if(c <   0x800) { *out++ = ((c >>  6) & 0x1F) | 0xC0; bits=  0; }         else if(c < 0x10000) { *out++ = ((c >> 12) & 0x0F) | 0xE0; bits=  6; }         else                 { *out++ = ((c >> 18) & 0x07) | 0xF0; bits= 12; }         for(; bits >= 0; bits-= 6)         {             if (out >= outend)             break;             *out++ = ((c >> bits) & 0x3F) | 0x80;         }         processed = (const unsigned char*) in;     }     *outlen = out - outstart;     *inlenb = processed - inb;     return(*outlen); }

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