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/*-*- 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/conv/conv.h"
#include "libc/fmt/fmt.h"
#include "libc/log/check.h"
#include "libc/mem/mem.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 "third_party/getopt/getopt.h"
#define USAGE \
" [FLAGS] [PATH...]\n\
this program prints binary as signed 16-bit decimal numbers\n\
\n\
Flags:\n\
-n INT\n\
-c INT\n\
-w INT width (aka cols) [default 8]\n\
-o PATH output path [default -]\n\
-h shows this information\n\
\n"
static long width_;
static FILE *in_, *out_;
static char *inpath_, *outpath_;
void PrintUsage(int rc, FILE *f) {
fputs("Usage: ", f);
fputs(program_invocation_name, f);
fputs(USAGE, f);
exit(rc);
}
void GetOpts(int *argc, char *argv[]) {
int opt;
outpath_ = "-";
while ((opt = getopt(*argc, argv, "?ho:w:c:n:")) != -1) {
switch (opt) {
case 'o':
outpath_ = optarg;
break;
case 'n':
case 'c':
case 'w':
width_ = strtol(optarg, NULL, 0);
break;
case '?':
case 'h':
PrintUsage(EXIT_SUCCESS, stdout);
default:
PrintUsage(EX_USAGE, stderr);
}
}
if (optind == *argc) {
argv[(*argc)++] = "-";
}
}
void ProcessFile(void) {
int a, b;
unsigned n;
n = 0;
while ((a = fgetc(in_)) != -1 && (b = fgetc(in_)) != -1) {
if (n) {
fputc(',', out_);
fputc(' ', out_);
}
fprintf(out_, "%7hd", b << 010 | a);
if (++n == width_) {
n = 0;
fputc('\n', out_);
}
}
if (n) {
fputc('\n', out_);
}
}
int main(int argc, char *argv[]) {
size_t i;
GetOpts(&argc, argv);
CHECK_NOTNULL((out_ = fopen(outpath_, "w")));
for (i = optind; i < argc; ++i) {
CHECK_NOTNULL((in_ = fopen((inpath_ = argv[i]), "r")));
ProcessFile();
CHECK_NE(-1, fclose_s(&in_));
}
CHECK_NE(-1, fclose_s(&out_));
return 0;
}