dos33fsprogs/still_alive/art/create_lz4_art.c
Vince Weaver e6c001287d sa: try to encrypt the ascii art
turns out it is too slow, and we can't re-use the lz4 code
without duplicating it completely.
2018-05-23 16:04:27 -04:00

122 lines
2.3 KiB
C

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
/* Need liblz4 installed */
#include "lz4.h"
#include "lz4hc.h"
#define NUM_FILES 10
static char art_files[NUM_FILES][20]={
"01_aperture.txt",
"02_radioactive.txt",
"03_atom.txt",
"04_broken_heart.txt",
"05_explosion.txt",
"06_fire.txt",
"07_check.txt",
"08_black_mesa.txt",
"09_cake.txt",
"10_glados.txt",
};
static char art_names[NUM_FILES][20]={
"aperture",
"radioactive",
"atom",
"broken_heart",
"explosion",
"fire",
"check",
"black_mesa",
"cake",
"glados",
};
#define MAX_SIZE 1024
static unsigned char buffer[MAX_SIZE];
static unsigned char compressed_buffer[MAX_SIZE];
static void dump_asm(char *name,int size,unsigned char *buffer) {
int j;
printf("%s:\n",name);
for(j=0;j<size+1;j++) {
if (j%16==0) {
printf("\n\t.byte $%02X",buffer[j]);
}
else {
printf(",$%02X",buffer[j]);
}
}
printf("\n");
}
int main(int argc, char **argv) {
int i,j,fd,size,total_size=0,compressed_size=0,total_compressed=0;
printf("ascii_art:\n");
for(i=0;i<NUM_FILES;i++) {
printf("\t.byte <%s,>%s\n",art_names[i],art_names[i]);
}
printf("\n");
for(i=0;i<NUM_FILES;i++) {
fd=open(art_files[i],O_RDONLY);
if (fd<0) {
fprintf(stderr,"Error opening %s\n",art_files[i]);
return -1;
}
size=read(fd,buffer,MAX_SIZE);
if (size<0) {
fprintf(stderr,"Error reading %s\n",art_files[i]);
}
total_size+=size;
/* Convert to Apple II ASCII */
for(j=0;j<size;j++) {
if (buffer[j]=='\n') buffer[j]=13;
buffer[j]=buffer[j]|0x80;
}
buffer[j]=0;
compressed_size=LZ4_compress_HC ((char *)buffer,
(char *)compressed_buffer,
size,
MAX_SIZE,
16);
if (compressed_size>MAX_SIZE) {
fprintf(stderr,"Error! Compressed data too big!\n");
}
total_compressed+=compressed_size;
fprintf(stderr,"%s %d %d\n",art_files[i],size,compressed_size);
close(fd);
dump_asm(art_names[i],compressed_size,compressed_buffer);
}
fprintf(stderr,"Total original: %d\n",total_size);
fprintf(stderr,"Total compressed: %d\n",total_compressed);
return 0;
}