cosmopolitan/tool/viz/bing.c

94 lines
3.4 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/log/log.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/ex.h"
#include "libc/sysv/consts/exit.h"
#include "libc/sysv/consts/fileno.h"
#include "third_party/getopt/getopt.h"
/**
* @fileoverview Bing: Binary → Glyphs.
* Intended for oldskool data science.
*/
int ispipe_;
int newlines_;
wontreturn void ShowUsage(FILE *f, int rc) {
fputs(program_invocation_name, f);
fputs(": [-p] [-n] [FILE...]\n", f);
exit(rc);
}
void GetOpts(int argc, char *argv[]) {
int opt;
while ((opt = getopt(argc, argv, "hpn")) != -1) {
switch (opt) {
case 'p':
ispipe_ = true;
break;
case 'n':
newlines_ = true;
break;
case 'h':
ShowUsage(stdout, EXIT_SUCCESS);
default:
ShowUsage(stderr, EX_USAGE);
}
}
}
void bing(FILE *f) {
int c, c2;
while ((c = fgetc(f)) != -1) {
c2 = c == '\n' && newlines_ ? '\n' : kCp437[c & 0xff];
if (ispipe_) {
fputc(c, stdout);
fputwc(c2, stderr);
} else {
fputwc(c2, stdout);
}
}
fputc('\n', ispipe_ ? stderr : stdout);
}
int main(int argc, char *argv[]) {
FILE *f;
size_t i;
GetOpts(argc, argv);
if (optind < argc) {
for (i = optind; i < argc; ++i) {
if (!(f = fopen(argv[i], "rb"))) {
perror(argv[i]);
exit(EXIT_FAILURE);
}
bing(f);
fclose(f);
}
} else {
bing(stdin);
}
return 0;
}