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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <locale.h>
#include <wchar.h>
#include <errno.h>
#include "atables.h"
const char **table = ata2utf;
const char *inverse_on = "\x1b[7m";
const char *inverse_off = "\x1b[0m";
int verbose = 0, color = 1;
const char *self;
void set_self(const char *argv0) {
char *p;
self = argv0;
p = strrchr(self, '/');
if(p) self = p + 1;
}
void die(const char *msg) {
fprintf(stderr, "%s: %s\n", self, msg);
exit(1);
}
void print_help(void) {
printf("Usage: %s [-v] [file ...]\n", self);
}
FILE *open_input(const char *file) {
FILE *input;
if(file[0] == '-' && file[1] == 0) {
if(verbose)
fprintf(stderr, "%s: reading from standard input.\n", self);
if(freopen(NULL, "rb", stdin)) {
input = stdin;
} else {
perror("(standard input)");
return NULL;
}
} else if(!(input = fopen(file, "rb"))) {
perror(file);
return NULL;
}
if(verbose)
fprintf(stderr, "%s: reading from file '%s'.\n", self, file);
return input;
}
const char *color_off = "\x1b[0m";
char *get_color(unsigned char c) {
int color;
unsigned char c7 = c & 0x7f;
static char outbuf[32];
if(c == 0 || c == 0x9b) {
color = 1; /* red */
} else if(c7 < 32 || c7 == 0x60 || c7 == 0x7b || c7 == 0x7d || c7 == 0x7e || c7 == 0x7f) {
color = 3; /* yellow/orange */
} else {
color = 2;
}
if(color) {
sprintf(outbuf, "\x1b[0;3%dm", color);
if(c & 0x80) strcat(outbuf, inverse_on);
} else {
outbuf[0] = '\0';
}
return outbuf;
}
void dump_line(const unsigned char *buf, int len) {
char hex[1024], asc[1024];
static int filepos = 0;
int hpos = 0, apos = 0, count = len;
memset(hex, 0, sizeof(hex));
memset(asc, 0, sizeof(asc));
printf("%04x: ", filepos);
while(len) {
if(color) hpos += sprintf(hex + hpos, "%s", get_color(*buf));
hpos += sprintf(hex + hpos, "%02x", *buf);
if(color) hpos += sprintf(hex + hpos, "%s", color_off);
hex[hpos++] = ' ';
if(count - len == 7) hex[hpos++] = ' ';
if(*buf & 0x80) apos += sprintf(asc + apos, "%s", inverse_on);
if(color) apos += sprintf(asc + apos, "%s", get_color(*buf));
apos += sprintf(asc + apos, "%s", table[*buf & 0x7f]);
if(color || *buf & 0x80) apos += sprintf(asc + apos, "%s", color_off);
filepos++;
buf++;
len--;
}
printf("%s", hex);
/* what shall we use to fill the empty spaces? */
if(count < 8) putchar(' ');
for(; count < 16; count++) fputs(" ", stdout);
printf(" %s\n", asc);
}
int a8xd(const char *file) {
FILE *input;
int c, len = 0;
unsigned char buf[16];
if( !(input = open_input(file)) )
return 1;
while( (c = fgetc(input)) != EOF ) {
if(len && (len % 16 == 0)) {
dump_line(buf, len);
len = 0;
}
buf[len++] = c;
}
if(len) dump_line(buf, len);
return 0;
}
int main(int argc, char **argv) {
int opt, result = 0;
set_self(argv[0]);
if(argc > 1 && strcmp(argv[1], "--help") == 0) {
print_help();
exit(0);
}
if(argc > 1 && strcmp(argv[1], "--version") == 0) {
printf("%s %s\n", self, VERSION);
exit(0);
}
while( (opt = getopt(argc, argv, "vim")) != -1) {
switch(opt) {
case 'v': verbose = 1; break;
case 'i': table = ics2utf; break;
case 'm': color = 0; break;
default: print_help(); exit(1); break;
}
}
if(optind >= argc) {
result = a8xd("-");
} else {
while(optind < argc) {
result += a8xd(argv[optind]);
optind++;
}
}
exit(result);
}
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