test_font.c

可用于UNIX/LINUX下测试字库文件的源代码

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <string.h>
#include <assert.h>

#define E_OK 0
#define E_FAIL -1

#define E_TRUE 1
#define E_FALSE 0

char m_SourceFontName[80];
int  m_SourceFileHandle;

int main( int argc, char *argv[] )
{
	int i, j, count, ret, current_bit;
	unsigned char value[128], current_value;

	if( argc != 2 )
	{
		printf( "usage : %s sourc_font_file_name ...\n", argv[0] );
		return E_FAIL;
	}

	memset( m_SourceFontName, 0x00, sizeof( m_SourceFontName ));
	memcpy( m_SourceFontName, argv[1], sizeof( m_SourceFontName ) - 1 );

	if(( m_SourceFileHandle = open( m_SourceFontName, O_RDONLY )) == E_FAIL )
	{
		printf( "failed to open source font file %s ...\n", m_SourceFontName );
		return E_FAIL;
	}
	
    i = 0;
	while( 1 )
    {
        ret = read( m_SourceFileHandle, value, sizeof( value ));
        if( ret < 128 )
        {
            break;
        }
        for( i = 0; i < 128; i++ )
        {
            current_value = value[i];
            for( j = 0; j < 8; j++ )
            {
                current_bit = current_value & 0x80;
                if( current_bit )
                {
                    putchar( 'x' );
                }
                else
                {
                    putchar( '-' );
                }
                current_value = current_value << 1;
            }
            if(( i + 1 ) % 4 == 0 )
            {
                putchar( '\n' );
            }
        }
        putchar( '\n' );
	}
	close( m_SourceFileHandle );
}