72 lines
1.5 KiB
C++
72 lines
1.5 KiB
C++
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#include "StdAfx.h"
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#include "Japanese.h"
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//
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// CP932: Shift-JIS (Japan Industry Standard)
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//
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#define MACRO_IsLeadByte(c) ((0x81 <= (c) && (c) <= 0x9f) || ((0xe0 <= (c)) && (c) <= 0xfc))
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#define MACRO_IsTailByte(c) ((0x40 <= (c) && (c) <= 0x7e) || (0x80 <= (c) && (c) <= 0xfc))
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BOOL ShiftJIS_IsLeadByte( const char chByte )
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{
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const unsigned char byByte = (const unsigned char) chByte;
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return MACRO_IsLeadByte( byByte );
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}
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BOOL ShiftJIS_IsTrailByte( const char chByte )
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{
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const unsigned char byByte = (const unsigned char) chByte;
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return MACRO_IsTailByte( byByte );
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}
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int ShiftJIS_StringCompareCI( LPCSTR szStringLeft, LPCSTR szStringRight, size_t sizeLength )
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{
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const unsigned char* uszString1 = (const unsigned char*) szStringLeft;
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const unsigned char* uszString2 = (const unsigned char*) szStringRight;
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unsigned short c1, c2;
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if( sizeLength == 0 )
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return 0;
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while( sizeLength-- ) {
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c1 = *uszString1++;
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if( MACRO_IsLeadByte(c1) ) {
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if( sizeLength == 0 ) {
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c1 = 0;
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c2 = MACRO_IsLeadByte( *uszString2 ) ? 0 : *uszString2;
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goto test;
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}
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if( *uszString1 == '\0' )
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c1 = 0;
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else {
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c1 = ((c1 << 8) | *uszString1++);
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}
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} else
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c1 = tolower(c1);
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c2 = *uszString2++;
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if( MACRO_IsLeadByte(c2) ) {
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if( sizeLength == 0 ) {
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c2 = 0;
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goto test;
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}
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sizeLength--;
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if( *uszString2 == '\0' )
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c2 = 0;
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else {
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c2 = ((c2 << 8) | *uszString2++);
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}
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} else
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c2 = tolower(c2);
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test:
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if (c1 != c2)
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return( (c1 > c2) ? 1 : -1);
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if (c1 == 0)
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return(0);
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}
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return 0;
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}
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