dbcsutil.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 60 行

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//
// DBCSUTIL     : double-byte character processing utilities
//

#include "ftnstd.h"
#include "csetinfo.h"

extern  character_set           CharSetInfo;


int     ExtractText( char *string, int len ) {
//============================================

// Given a string of text, extract as much text as possible up to a maximum
// of "len" bytes so that we don't split double-byte characters.

    int         str_len;
    int         chr_len;

    str_len = 0;
    for(;;) {
        chr_len = CharSetInfo.character_width( string + str_len );
        if( str_len + chr_len > len ) break;
        str_len += chr_len;
    }
    return( str_len );
}