字符串替换函数

const int MAX_STRLEN = 256;
//---------------------------------------------------------------------------

// Name     : strrep
// Desc     : Replace all matched substring.
// Param    :
//  str     : Null-terminated string to replace.
//  match   : Null-terminated string to match for.
//  rep     : string to replace for.
// return   : 0 Success,-1 Fail.
int strrep(char *str, const char *match, const char *rep)
{
    if (!str || !match)
        return -1;
    char tmpstr[MAX_STRLEN];
    char *pos = strstr(str, match);
    while (pos)
    {
        memset(tmpstr, 0, sizeof(tmpstr));
        strncpy(tmpstr, str, pos - str);
        strcat(tmpstr, rep);
        strcat(tmpstr, pos + strlen(match));
        strcpy(str, tmpstr);
        pos = strstr(str, match);
    }
    return 0;
}
//---------------------------------------------------------------------------

// Name     : wcsrep
// Desc     : Replace all matched substring.
// Param    :
//  str     : Null-terminated string to replace.
//  match   : Null-terminated string to match for.
//  rep     : string to replace for.
// return   : 0 Success,-1 Fail.
int wcsrep(wchar_t *str, const wchar_t *match, const wchar_t *rep)
{
    if (!str || !match)
        return -1;
    wchar_t tmpstr[MAX_STRLEN];
    wchar_t *pos = wcsstr(str, match);
    while (pos)
    {
        memset(tmpstr, 0, sizeof(tmpstr));
        wcsncpy(tmpstr, str, pos - str);
        wcscat(tmpstr, rep);
        wcscat(tmpstr, pos + wcslen(match));
        wcscpy(str, tmpstr);
        pos = wcsstr(str, match);
    }
    return 0;
}
//---------------------------------------------------------------------------