int fsyslib_vfprintf( ES_FILE *fp, const char * str, va_list argp)
{
char string[13];
char *p;
__s32 hex_flag ;
int numbytes = 0;
char fmt = '%';
while( *str )
{
if( *str == '%' )
{
++str;
p = string;
hex_flag = HEX_X;
switch( *str )
{
case 'd':
eLIBs_int2str_dec( va_arg( argp, __s32 ), string );
eLIBs_fwrite(p, eLIBs_strlen(p), 1 , fp ); // write string to file fp
numbytes += eLIBs_strlen(p);
++str;
break;
case 'x': hex_flag = HEX_x; // jump to " case 'X' "
case 'p':
case 'X':
eLIBs_int2str_hex( va_arg( argp, __s32 ), string, hex_flag );
eLIBs_fwrite(p, eLIBs_strlen(p), 1 , fp );
numbytes += eLIBs_strlen(p);
++str;
break;
case 'u':
eLIBs_uint2str_dec( va_arg( argp, __s32 ), string );
eLIBs_fwrite(p, eLIBs_strlen(p), 1 , fp );
numbytes += eLIBs_strlen(p);
++str;
break;
case 'c':
string[0] = va_arg( argp, __s32 );
eLIBs_fwrite(&(string[0]), sizeof(char), 1 , fp );
numbytes++;
++str;
break;
case 's':
p = va_arg( argp, char* );
eLIBs_fwrite(p, eLIBs_strlen(p), 1 , fp );
numbytes += eLIBs_strlen(p);
++str;
break;
default :
eLIBs_fwrite(&fmt, sizeof(char), 1 , fp );
numbytes ++;
eLIBs_fwrite(str, sizeof(char), 1 , fp );
numbytes ++;
++str; // let 'str' point to next character.
}
}
else
{
size_t fwrite(const void *ptr,size_t size, size_t nmemb, FILE *fp)
{
if (fp == (FILE *)&__stdin || fp == (FILE *)&__stdout || fp == (FILE *)&__stderr)
return size; // 待实现
return eLIBs_fwrite(ptr,size,nmemb, (ES_FILE *)fp);
}
