jstrcspn.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 84 行

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*                            Open Watcom Project
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#include "variety.h"
#include <jstring.h>

/******************************************************************************
*
*  Name:        jstrcspn        暥帤楍偺愭摢偐傜専嶕暥帤傑偱偺暥帤悢傪摼傞
*
*  Synopsis:    c = jstrcspn( str1, str2 );
*
*               int     c;      暥帤楍偺愭摢偐傜専嶕暥帤偑尒偮偐傞傑偱偺暥帤悢
*               JSTRING str1;   旐専嶕暥帤楍
*               JSTRING str2;   専嶕暥帤偺僙僢僩
*
*  Description: jstrcspn 娭悢偼 strcspn 娭悢傪娍帤僐乕僪偵懳墳偝偣偨暔偱偡丅
*               str1 偱巜掕偟偨暥帤楍拞偱丄str2 偱巜掕偟偨暥帤偺偄偢傟偐侾暥帤偑*               嵟弶偵尰傟傞傑偱偺暥帤悢傪曉偟傑偡丅
*
*  Returns:     str2 偱巜掕偟偨暥帤傪彍偔暥帤偩偗偐傜側傞丄str1 偺愭摢偐傜偺晹暘*               暥帤楍偺暥帤悢傪丄惍悢抣偱曉偟傑偡丅
*
*
*  Name:        jstrcspn        compute the length of the initial segment of
*                               the string consists letters not from the
*                               array of the searching letters.
*
*  Synopsis:    c = jstrcspn( str1, str2 );
*               int     c;      resoult length of computing
*               JSTRING str1;   pointer to be referenced string
*               JSTRING str2;   pointer to the array of searching letters
*
*  Description: jstrcspn function has same specification as strcspn function
*               except having advantage point for correspond to KANJI letters.
*               The jstrcspn function computes the length of the initial segment
*               of the string pointed to by str1 which consists entirely of
*               letters not from the string pointed to by str2. Japanese 2 byte
*               code letter is considered one character.
*
*  Returns:     The length of the initial segment is returned.
*/

_WCRTLINK size_t jstrcspn( const JCHAR *str1, const JCHAR *str2 )
{
    const JCHAR *s2;
    JMOJI c1, c2;
    size_t count;

    for( count = 0; str1 = jgetmoji( str1, &c1 ), c1; ++count ) {
        for( s2 = str2; s2 = jgetmoji( s2, &c2 ), c2; ) {
            if( c1 == c2 ) return count;
        }
    }
    return count;
}