wince下字符都是unicode編碼,做項目使用的XML也需要是unicode字符,而項目中顯示屏LCD是GB字符,使用的時候就存在兩者的轉換問題經過google後,發現這種轉換隻能通過查表的形式進行,把unicode和GB碼對應的字符做成二維碼錶,然後查找獲取。GB字符總共21791,查找採用了二分法查找。
1、unicode轉換成GB
//函數功能是unicode轉成GB,碼錶需要按unicode進行排序!
unsigned short UnicodeTOGBK(unsigned short unicode)
{
int low=0,high=TotalGBKNum-1,mid;
while(low <= high)
{
mid = (low+high)/2;
int x=GBK2UNICODETBL[mid][1];
if(GBK2UNICODETBL[mid][1] == unicode)
return GBK2UNICODETBL[mid][0];
if(GBK2UNICODETBL[mid][1]>unicode)
high=mid-1;
else
low=mid+1;
}
return 0xFFFF;
}
2、GB轉成unicode
//函數功能是GB轉成unicode,碼錶需要按GB進行排序!
unsigned int gb2unicode(unsigned short *unicode,unsigned char*gb,int len)
{
int i,j;
i=0;
for(j=0;i<len;j++)
{
if ((unsigned char)gb[j]<=0x80)
{
unicode[j]=(unsigned short)gb[j];
i++;
}
else
{
unicode[j]=ESM_getValidGBCode(*(unsigned short *)(gb+i));
i+=2;
}
#ifdef Little2Big_Endian
reverise_w(&unicode[j]);
#endif
}
return j*2;
}
unsigned short ESM_getValidGBCode(unsigned short gb)
{
int low=0,high=TotalGBKNum-1,mid;
while(low <= high)
{
mid = (low+high)/2;
if(GBK2UNICODETBL[mid][0] == gb)
return GBK2UNICODETBL[mid][1];
if(GBK2UNICODETBL[mid][0]>gb)
high=mid-1;
else
low=mid+1;
}
return 0xFFFF;
}
對應的碼錶下載鏈接:http://download.csdn.net/detail/mjx91282041/4768949