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110 lines
3.8 KiB
110 lines
3.8 KiB
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│ |
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│ |
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╞══════════════════════════════════════════════════════════════════════════════╡ |
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│ Copyright 2020 Justine Alexandra Roberts Tunney │ |
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│ │ |
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│ This program is free software; you can redistribute it and/or modify │ |
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│ it under the terms of the GNU General Public License as published by │ |
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│ the Free Software Foundation; version 2 of the License. │ |
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│ │ |
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│ This program is distributed in the hope that it will be useful, but │ |
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │ |
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │ |
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│ General Public License for more details. │ |
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│ │ |
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│ You should have received a copy of the GNU General Public License │ |
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│ along with this program; if not, write to the Free Software │ |
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │ |
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│ 02110-1301 USA │ |
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╚─────────────────────────────────────────────────────────────────────────────*/ |
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#include "libc/conv/conv.h" |
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#include "libc/fmt/fmt.h" |
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#include "libc/log/check.h" |
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#include "libc/mem/mem.h" |
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#include "libc/runtime/runtime.h" |
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#include "libc/stdio/stdio.h" |
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#include "libc/str/str.h" |
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#include "libc/sysv/consts/ex.h" |
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#include "libc/sysv/consts/exit.h" |
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#include "third_party/getopt/getopt.h" |
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#define USAGE \ |
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" [FLAGS] [PATH...]\n\ |
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this program prints binary as signed 16-bit decimal numbers\n\ |
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\n\ |
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Flags:\n\ |
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-n INT\n\ |
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-c INT\n\ |
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-w INT width (aka cols) [default 8]\n\ |
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-o PATH output path [default -]\n\ |
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-h shows this information\n\ |
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\n" |
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static long width_; |
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static FILE *in_, *out_; |
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static char *inpath_, *outpath_; |
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void PrintUsage(int rc, FILE *f) { |
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fputs("Usage: ", f); |
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fputs(program_invocation_name, f); |
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fputs(USAGE, f); |
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exit(rc); |
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} |
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void GetOpts(int *argc, char *argv[]) { |
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int opt; |
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outpath_ = "-"; |
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while ((opt = getopt(*argc, argv, "?ho:w:c:n:")) != -1) { |
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switch (opt) { |
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case 'o': |
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outpath_ = optarg; |
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break; |
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case 'n': |
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case 'c': |
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case 'w': |
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width_ = strtol(optarg, NULL, 0); |
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break; |
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case '?': |
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case 'h': |
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PrintUsage(EXIT_SUCCESS, stdout); |
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default: |
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PrintUsage(EX_USAGE, stderr); |
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} |
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} |
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if (optind == *argc) { |
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argv[(*argc)++] = "-"; |
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} |
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} |
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void ProcessFile(void) { |
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int a, b; |
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unsigned n; |
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n = 0; |
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while ((a = fgetc(in_)) != -1 && (b = fgetc(in_)) != -1) { |
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if (n) { |
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fputc(',', out_); |
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fputc(' ', out_); |
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} |
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fprintf(out_, "%7hd", b << 010 | a); |
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if (++n == width_) { |
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n = 0; |
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fputc('\n', out_); |
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} |
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} |
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if (n) { |
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fputc('\n', out_); |
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} |
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} |
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int main(int argc, char *argv[]) { |
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size_t i; |
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GetOpts(&argc, argv); |
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CHECK_NOTNULL((out_ = fopen(outpath_, "w"))); |
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for (i = optind; i < argc; ++i) { |
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CHECK_NOTNULL((in_ = fopen((inpath_ = argv[i]), "r"))); |
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ProcessFile(); |
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CHECK_NE(-1, fclose_s(&in_)); |
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} |
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CHECK_NE(-1, fclose_s(&out_)); |
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return 0; |
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}
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