#include "stdio.h"
#include "string.h"
typedef unsigned char ubyte;
typedef char sbyte;
typedef unsigned long ulong;
ubyte title[62] = { 0xd9, 0x8f,/**/ 0x2f, 0x66,/*0x2f, 0x66*/ 0x00, 0x4e,/**/ 0x2a, 0x4e,/**/ 0x8b, 0x4f,/**/ 0x50, 0x5b,/**/ 0x5e, 0x97,/**/ 0x38, 0x5e,/**/ 0x7d, 0x59 /**/};
ubyte artist[62] = { 0x4D, 0x00,/*M*/ 0x69, 0x00,/*i*/ 0x63, 0x00,/*c*/ 0x68, 0x00,/*h*/ 0x61, 0x00,/*a*/ 0x65, 0x00,/*e*/ 0x6C, 0x00,/*l*/ 0x20, 0x00,/* */ 0x4A, 0x00,/*j*/ 0x61, 0x00,/*a*/ 0x63, 0x00,/*c*/ 0x63, 0x00,/*k*/ 0x73, 0x00,/*s*/ 0x6F, 0x00,/*o*/ 0x6E, 0x00/*n*/};
ubyte album[62] = { 0x52, 0x00,/*R*/ 0x6f, 0x00,/*o*/ 0x63, 0x00,/*c*/ 0x6b, 0x00,/*k*/ 0x20, 0x00,/* */ 0x57, 0x00,/*W*/ 0x69, 0x00,/*i*/ 0x74, 0x00,/*t*/ 0x68, 0x00,/*h*/ 0x20, 0x00,/* */ 0x59, 0x00,/*y*/ 0x6f, 0x00,/*o*/ 0x75, 0x00 /*u*/};
static int Impm_StrUnicodeToUtf8(ubyte *UnicBytes, int UnicChLen, ubyte *Utf8Buf, int BufSize, int *OutBytesSize);
static int Impm_UnicodeToUtf8(ulong unic, ubyte *pOutput, int outSize);
int main()
{
ubyte out[62] = {0};
int num = 0;
Impm_StrUnicodeToUtf8(title, 9, out, sizeof(out), &num);
printf("%d\n", num);
return 0;
}
/*----------------------------------------------------------------------------*/
/*Name : Impm_StrUnicodeToUtf8 */
/*Role : Converts a string of type unicode(UCS-2&UCS-4) to a string of type utf8*/
/*Interface : */
/* - IN : UnicBytes:unicode string */
/* - IN : UnicChLen:unicode char len */
/* - OUT : Utf8Buf:Utf8 string */
/* - IN : BufSize:Utf8 string buf size */
/* - OUT : OutBytesSize:Output Utf8 string bytes len */
/*Pre-condition : Unicode little endian */
/*Constraints : none */
/*Behavior : */
/* DO */
/* [operation to carry out] */
/* OD */
/*----------------------------------------------------------------------------*/
static int Impm_StrUnicodeToUtf8(ubyte *UnicBytes, int UnicChLen, ubyte *Utf8Buf, int BufSize, int *OutBytesSize)
{
int ChCnt = 0;
ulong UnicCh = 0;
ubyte Utf8Ch[6] = {0};
ubyte *pIndex = Utf8Buf;
int BytesCnt = 0;
int Utf8ChBytesLen = 0;
int ret = 0;
if(NULL==UnicBytes || NULL==Utf8Buf || NULL==OutBytesSize)
{
ret = 1;
}
else
{
for(ChCnt=0; ChCnt<UnicChLen; ChCnt++)
{
UnicCh = 0;
UnicCh = UnicBytes[ChCnt*2+1];
UnicCh <<= 8;
UnicCh |= UnicBytes[ChCnt*2];
/*Convert*/
Utf8ChBytesLen = Impm_UnicodeToUtf8(UnicCh, Utf8Ch, sizeof(Utf8Ch));
if(BytesCnt+Utf8ChBytesLen <= BufSize)
{
memcpy(pIndex, Utf8Ch, Utf8ChBytesLen);
pIndex += Utf8ChBytesLen;
BytesCnt += Utf8ChBytesLen;
}
else
{
ret = 2;
}
}
*OutBytesSize = BytesCnt;
}
return ret;
}
/*----------------------------------------------------------------------------*/
/*Name : Impm_UnicodeToUtf8 */
/*Role : Converts unicode(UCS-2&UCS-4) to utf8 */
/*Interface : */
/* - IN : unic:unicode code */
/* - OUT : pOutput:Output uft8 code */
/* - IN : outSize:pOutput buf size */
/*Pre-condition : */
/*Constraints : none */
/*Behavior : */
/* DO */
/* [operation to carry out] */
/* OD */
/*----------------------------------------------------------------------------*/
static int Impm_UnicodeToUtf8(ulong unic, ubyte *pOutput, int outSize)
{
int Ret = 0;
if( (NULL != pOutput) && (outSize >= 6) ) /*pOutput not null and outSize size big than 6(utf8 needs a maximum of 6 bytes)*/
{
if ( unic <= 0x0000007F )
{
// * U-00000000 - U-0000007F: 0xxxxxxx
*pOutput = (unic & 0x7F);
Ret = 1;
}
else if ( unic >= 0x00000080 && unic <= 0x000007FF )
{
// * U-00000080 - U-000007FF: 110xxxxx 10xxxxxx
*(pOutput+1) = (unic & 0x3F) | 0x80;
*pOutput = ((unic >> 6) & 0x1F) | 0xC0;
Ret = 2;
}
else if ( unic >= 0x00000800 && unic <= 0x0000FFFF )
{
// * U-00000800 - U-0000FFFF: 1110xxxx 10xxxxxx 10xxxxxx
*(pOutput+2) = (unic & 0x3F) | 0x80;
*(pOutput+1) = ((unic >> 6) & 0x3F) | 0x80;
*pOutput = ((unic >> 12) & 0x0F) | 0xE0;
Ret = 3;
}
else if ( unic >= 0x00010000 && unic <= 0x001FFFFF )
{
// * U-00010000 - U-001FFFFF: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
*(pOutput+3) = (unic & 0x3F) | 0x80;
*(pOutput+2) = ((unic >> 6) & 0x3F) | 0x80;
*(pOutput+1) = ((unic >> 12) & 0x3F) | 0x80;
*pOutput = ((unic >> 18) & 0x07) | 0xF0;
Ret = 4;
}
else if ( unic >= 0x00200000 && unic <= 0x03FFFFFF )
{
// * U-00200000 - U-03FFFFFF: 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
*(pOutput+4) = (unic & 0x3F) | 0x80;
*(pOutput+3) = ((unic >> 6) & 0x3F) | 0x80;
*(pOutput+2) = ((unic >> 12) & 0x3F) | 0x80;
*(pOutput+1) = ((unic >> 18) & 0x3F) | 0x80;
*pOutput = ((unic >> 24) & 0x03) | 0xF8;
Ret = 5;
}
else if ( unic >= 0x04000000 && unic <= 0x7FFFFFFF )
{
// * U-04000000 - U-7FFFFFFF: 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
*(pOutput+5) = (unic & 0x3F) | 0x80;
*(pOutput+4) = ((unic >> 6) & 0x3F) | 0x80;
*(pOutput+3) = ((unic >> 12) & 0x3F) | 0x80;
*(pOutput+2) = ((unic >> 18) & 0x3F) | 0x80;
*(pOutput+1) = ((unic >> 24) & 0x3F) | 0x80;
*pOutput = ((unic >> 30) & 0x01) | 0xFC;
Ret = 6;
}
else
{
Ret = 0;
}
}
else
{
Ret = 0;
}
return Ret;
}
unicode(ucs-2 ucs-4)转utf8
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转载自blog.csdn.net/qq229596421/article/details/81004945
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