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75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
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/*
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* Convert ansi to utf-8
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* it does not support more that utf-16
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* the table we are using is base on utf-16 then we convert the table to utf-8
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*
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* All table lookup the ansi char to utf-16 then we calc the utf-8 format.
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*/
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#include "oem437.h" /* windows oem 437 */
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#include "oem850.h" /* windows oem 850 */
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#include "Windows28591.h" /* windows 28591 aka ISO-2859-1 (Latin 1) */
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#include "Windows28592.h" /* windows 28592 aka ISO-2859-2 (Latin 2) */
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int ansiCodePage(int codepage, unsigned char *inBuffer, unsigned char *outBuffer, int Lenght)
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{
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int t;
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int ch;
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int pos=0;
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for (t=0;t<Lenght;t++)
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{
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ch=-1;
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if (codepage == 437)
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{
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ch = (int) table_OEM437[ ((unsigned char)inBuffer[t])];
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}
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if (codepage == 850)
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{
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ch = (int) table_OEM850[ ((unsigned char)inBuffer[t])];
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}
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if (codepage == 28591)
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{
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ch = (int) table_Windows28591[ ((unsigned char)inBuffer[t])];
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}
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if (codepage == 28592)
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{
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ch = (int) table_Windows28592[ ((unsigned char)inBuffer[t])];
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}
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if (ch == -1)
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{
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break;
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}
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if (ch <= 0x7F)
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{
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outBuffer[pos]=ch;
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pos++;
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}
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else if (ch <=0x07FF) // 1 1111 11 1111
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{
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outBuffer[pos]= 0xC0 | (0x1F & (ch >> 6)); // 110x xxxx
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outBuffer[pos+1]= 0x80 | (0x3f & ch); // 11xx xxxx
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pos+=2;
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}
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else if (ch <=0xFFFF) // 11 11 11 11 11 11 11 11
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{
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outBuffer[pos]= 0xC2 | (0xf & (ch >> 12)); // 1110xxxx
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outBuffer[pos+1]= 0x80 | (0x3f & (ch >> 6)); // 10xxxxxx
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outBuffer[pos+1]= 0x80 | (0x3f & ch); // 10xxxxxx
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pos+=3;
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}
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}
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return pos;
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}
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