/* Copyright (C) 2014 jaseg <github@jaseg.net>
 *
 * DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
 * Version 2, December 2004
 *
 * Everyone is permitted to copy and distribute verbatim or modified
 * copies of this license document, and changing it is allowed as long
 * as the name is changed.
 *
 * DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
 * TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 *
 * 0. You just DO WHAT THE FUCK YOU WANT TO.
 */

#include <stdint.h>
#include <stdio.h>
#include <wchar.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <unistd.h>
#include <sys/time.h>

int main(int argc, char **argv){
    char **inputs = argv+1;
    char **inputs_end = argv+argc;
    if(inputs == inputs_end){
        char *foo[] = {"-"};
        inputs = foo;
        inputs_end = inputs+1;
    }

    setlocale(LC_ALL, "");

    int escape_state = 0;
    for(char **filename=inputs; filename<inputs_end; filename++){
        FILE *f = stdin;

        if(strcmp(*filename, "-"))
            f = fopen(*filename, "r");
        
        if(!f){
            fprintf(stderr, "Cannot open input file \"%s\": %s\n", *filename, strerror(errno));
            return 2;
        } 

        int c;
        while((c = fgetwc(f)) > 0){
            if(!escape_state){
                if(c == '\e'){
                    printf("%lc", c);
                    escape_state = 1;
                }else if(strchr("acegmnopqrsuvwxyz", c))
                    printf("▄");
                else if(strchr(".,:; \t\r\n", c))
                    printf("%lc", c);
                else
                    printf("█");
            }else{
                printf("%lc", c);
                if(!strchr("[0123456789;", c))
                    escape_state = 0;
            }
        }

        fclose(f);

        if(c != WEOF && c != 0){
            fprintf(stderr, "Error reading input file \"%s\": %s\n", *filename, strerror(errno));
            return 2;
        }
    }
}