295 lines
12 KiB
C
295 lines
12 KiB
C
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// File Name: unix2pc.c
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// Owner: Tetsuhide Akaishi
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// Revision: 1.00 02/21/'93 Tetsuhide Akaishi
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//
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#include "win32.h"
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#include "fechrcnv.h"
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#ifdef DBCS_DIVIDE
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extern DBCS_STATUS dStatus0;
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extern DBCS_STATUS dStatus;
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#endif
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#ifdef IEXPLORE
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extern int nCurrentCodeSet;
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#endif
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int JPNUNIX_to_PC ( int CodeSet,
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UCHAR *pUNIXChar, int UNIXChar_len,
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UCHAR *pPCChar, int PCChar_len )
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// The JPNUNIX_to_PC function convert a character string as Japanese UNIX code
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// set string to a PC code set string.
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//
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//
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// int CodeSet Code Set Type.
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// There are three Japanese Code set in UNIX world.
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// These code sets are JIS, EUC and Shift JIS.
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// When CodePage is Japanese, the following Code set
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// constants are defined:
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//
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// Value Meaning
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// CODE_UNKNOWN Unknown. If this value is CODE_UNKNOWN,
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// Code Type is checked automatically.
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//
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// CODE_JPN_JIS JIS Code Set. The function convert
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// pUNIXChar string as JIS code set string
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// to a PC code set string.
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// CODE_JPN_EUC EUC Code Set. The function convert
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// pUNIXChar string as EUC code set string
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// to a PC code set string.
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// CODE_JPN_SJIS Shift JIS Code Set.
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//
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// UCHAR *pUNIXChar Points to the character string to be converted.
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//
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// int UNIXChar_len Specifies the size in bytes of the string pointed
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// to by the pUNIXChar parameter. If this value is -1,
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// the string is assumed to be NULL terminated and the
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// length is calculated automatically.
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//
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// UCHAR *pPCChar Points to a buffer that receives the convert string
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// from UNIX Code to PC Code.
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//
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// int PCChar_len Specifies the size, in PC characters of the buffer
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// pointed to by the pPCChar parameter. If the value is zero,
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// the function returns the number of PC characters
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// required for the buffer, and makes no use of the pPCChar
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// buffer.
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//
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// Return Value
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// If the function succeeds, and PCChar_len is nonzero, the return value is the
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// number of PC characters written to the buffer pointed to by pPCChar.
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//
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// If the function succeeds, and PCChar_len is zero, the return value is the
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// required size, in PC characters, for a buffer that can receive the
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// converted string.
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//
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// If the function fails, the return value is -1. The error mean pPCChar buffer
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// is small for setting converted strings.
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//
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{
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int re;
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#ifdef DBCS_DIVIDE
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int i = 0, nDelta = 0;
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if ( PCChar_len == 0 && dStatus0.nCodeSet != CODE_UNKNOWN)
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CodeSet = dStatus0.nCodeSet;
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else if ( PCChar_len != 0 && dStatus.nCodeSet != CODE_UNKNOWN )
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CodeSet = dStatus.nCodeSet;
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else
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#endif
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#ifdef IEXPLORE
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if ( nCurrentCodeSet == CODE_UNKNOWN ) {
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#endif
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if ( CodeSet == CODE_UNKNOWN ) {
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if ( ( CodeSet = DetectJPNCode ( pUNIXChar, UNIXChar_len ) )
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== CODE_ONLY_SBCS ) {
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CodeSet = CODE_JPN_JIS;
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}
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}
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#ifdef IEXPLORE
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nCurrentCodeSet = CodeSet;
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} else
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CodeSet = nCurrentCodeSet;
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#endif
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switch ( CodeSet ) {
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case CODE_JPN_JIS: // Japanese JIS Code
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// Convert from JIS to Shift JIS
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re = JIS_to_ShiftJIS ( pUNIXChar, UNIXChar_len,
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pPCChar, PCChar_len );
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break;
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case CODE_JPN_EUC: // Japanese EUC Code
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// Convert from EUC to Shift JIS
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re = EUC_to_ShiftJIS ( pUNIXChar, UNIXChar_len,
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pPCChar, PCChar_len );
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break;
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default:
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case CODE_JPN_SJIS: // Japanese Shift JIS Code
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// Start Only Copy Process
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if ( UNIXChar_len == -1 ) {
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UNIXChar_len = strlen ( pUNIXChar ) + 1;
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}
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if ( PCChar_len != 0 ) {
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#ifdef DBCS_DIVIDE
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UCHAR *pPCCharEnd = pPCChar + PCChar_len - 1;
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if ( dStatus.nCodeSet == CODE_JPN_SJIS && dStatus.cSavedByte){
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*pPCChar++ = dStatus.cSavedByte;
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*pPCChar = *pUNIXChar;
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++UNIXChar_len;
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++nDelta;
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++i;
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dStatus.nCodeSet = CODE_UNKNOWN;
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dStatus.cSavedByte = '\0';
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}
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while(i < UNIXChar_len - nDelta){
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if(IsDBCSLeadByte(*(pUNIXChar + i))){
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if(i == UNIXChar_len - nDelta - 1){
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dStatus.nCodeSet = CODE_JPN_SJIS;
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dStatus.cSavedByte = *(pUNIXChar + i);
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--UNIXChar_len;
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break;
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} else if((i == UNIXChar_len - nDelta - 2) &&
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(*(pUNIXChar + i + 1) == '\0')){
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dStatus.nCodeSet = CODE_JPN_SJIS;
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dStatus.cSavedByte = *(pUNIXChar + i);
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*(pPCChar + i + 1) = '\0';
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--UNIXChar_len;
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break;
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}
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if(pPCChar + i > pPCCharEnd) // check destination buf
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break;
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*(pPCChar + i++) = *(pUNIXChar + i);
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*(pPCChar + i++) = *(pUNIXChar + i);
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} else
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*(pPCChar + i++) = *(pUNIXChar + i);
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}
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#else
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if ( UNIXChar_len > PCChar_len ) { // Is the buffer small?
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return ( -1 );
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}
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memmove ( pPCChar, pUNIXChar, UNIXChar_len );
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#endif
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}
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#ifdef DBCS_DIVIDE
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else { // Only retrun the required size
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if ( dStatus0.nCodeSet == CODE_JPN_SJIS ){ // 1st byte was saved
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++UNIXChar_len;
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++nDelta;
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++i;
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dStatus0.nCodeSet = CODE_UNKNOWN;
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dStatus0.cSavedByte = '\0';
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}
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while(i < UNIXChar_len - nDelta){
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if(IsDBCSLeadByte(*(pUNIXChar + i))){
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if(i == UNIXChar_len - nDelta - 1){
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dStatus0.nCodeSet = CODE_JPN_SJIS;
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dStatus0.cSavedByte = *(pUNIXChar + i);
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--UNIXChar_len;
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break;
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} else if((i == UNIXChar_len - nDelta - 2) &&
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(*(pUNIXChar + i + 1) == '\0')){
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dStatus0.nCodeSet = CODE_JPN_SJIS;
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dStatus0.cSavedByte = *(pUNIXChar + i);
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--UNIXChar_len;
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break;
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}
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i+=2;
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} else
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i++;
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}
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}
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#endif
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re = UNIXChar_len;
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break;
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}
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return ( re );
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}
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int WINAPI UNIX_to_PC ( int CodePage, int CodeSet,
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UCHAR *pUNIXChar, int UNIXChar_len,
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UCHAR *pPCChar, int PCChar_len )
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// The UNIX_to_PC function convert a character string as UNIX code
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// set string to a PC code set string.
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//
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// int CodePage Country Code Page.
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// If this value is -1, the function use OS CodePage from
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// Operating System automatically.
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//
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// Value Meaning
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// -1 Auto Detect Mode.
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// 932 Japan.
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// ??? Taiwan.
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// ??? Korea.
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// ??? PRC(Chaina)?
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//
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// int CodeSet Code Set Type.
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// There are three Japanese Code set in UNIX world.
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// These code sets are JIS, EUC and Shift JIS.
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// When CodePage is Japanese, the following Code set
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// constants are defined:
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//
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// Value Meaning
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// CODE_UNKNOWN Unknown. If this value is CODE_UNKNOWN,
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// Code Type is checked automatically.
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//
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// CODE_JPN_JIS JIS Code Set. The function convert
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// pUNIXChar string as JIS code set string
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// to a PC code set string.
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// CODE_JPN_EUC EUC Code Set. The function convert
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// pUNIXChar string as EUC code set string
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// to a PC code set string.
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// CODE_JPN_SJIS Shift JIS Code Set.
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//
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// UCHAR *pUNIXChar Points to the character string to be converted.
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//
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// int UNIXChar_len Specifies the size in bytes of the string pointed
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// to by the pUNIXChar parameter. If this value is -1,
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// the string is assumed to be NULL terminated and the
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// length is calculated automatically.
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//
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// UCHAR *pPCChar Points to a buffer that receives the convert string
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// from UNIX Code to PC Code.
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//
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// int PCChar_len Specifies the size, in PC characters of the buffer
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// pointed to by the pPCChar parameter. If the value is zero,
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// the function returns the number of PC characters
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// required for the buffer, and makes no use of the pPCChar
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// buffer.
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//
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// Return Value
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// If the function succeeds, and PCChar_len is nonzero, the return value is the
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// number of PC characters written to the buffer pointed to by pPCChar.
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//
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// If the function succeeds, and PCChar_len is zero, the return value is the
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// required size, in PC characters, for a buffer that can receive the
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// converted string.
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//
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// If the function fails, the return value is -1. The error mean pPCChar buffer
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// is small for setting converted strings.
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//
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//@
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{
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int re;
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if ( CodePage == -1 ) {
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CodePage = (int)GetOEMCP();
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}
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switch ( CodePage ) {
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case 932: // Japanese Code Page
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re = JPNUNIX_to_PC ( CodeSet, pUNIXChar, UNIXChar_len,
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pPCChar, PCChar_len );
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break;
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// case ???: // Taiwan Code Page
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// re = TAIWANUNIX_to_PC (,,,,,,);
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// break;
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// case ???: // Korea Code Page
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// re = KOREAUNIX_to_PC (,,,,,,);
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// break;
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// case ???: // PRC Code Page
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// re = PRCUNIX_to_PC (,,,,,,);
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// break;
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default:
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// Start Only Copy Process
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if ( UNIXChar_len == -1 ) {
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UNIXChar_len = strlen ( pUNIXChar ) + 1;
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}
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if ( PCChar_len != 0 ) {
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if ( UNIXChar_len > PCChar_len ) { // Is the buffer small?
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return ( -1 );
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}
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memmove ( pPCChar, pUNIXChar, UNIXChar_len );
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}
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re = UNIXChar_len;
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break;
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}
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return ( re );
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}
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