render.c

// Program used to test the output of bitmap.c
// Like bindump.c but more precise.
// License: Michael Warren FSL

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>

int main( int argc, char **argv ){
    FILE *fp;
    int c;
    int i = 0, j = 0;
    if( !(fp = fopen( argv[1], "r" )) ){
        perror( argv[0] );
        exit( errno );
    }
    uint16_t width;
    uint16_t height;
    fread( &width, 2, 1, fp );
    fread( &height, 2, 1, fp );
    int size = width * height;
    while( (c = fgetc( fp )) != EOF ){
        uint8_t b = 0x80;
        while( b ){
            if( b & c ) putchar( '#' );
            else putchar( ' ' );
            b >>= 1;
            if( ++i % width == 0 ) putchar( '\n' );
            if( ++j >= size ) break;
        }
    }
    fclose( fp );
}