mirror of
https://github.com/jart/cosmopolitan.git
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104 lines
3.4 KiB
C
104 lines
3.4 KiB
C
/*-*- 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 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/errno.h"
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#include "libc/fmt/magnumstrs.internal.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 "libc/sysv/consts/ok.h"
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#include "third_party/getopt/getopt.h"
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#define USAGE \
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" FILE...\n\
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\n\
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SYNOPSIS\n\
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\n\
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Removes Files\n\
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\n\
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FLAGS\n\
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\n\
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-?\n\
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-h help\n\
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-f force\n\
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\n"
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bool force;
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const char *prog;
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wontreturn void PrintUsage(int rc, FILE *f) {
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fputs("usage: ", f);
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fputs(prog, 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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while ((opt = getopt(argc, argv, "?hf")) != -1) {
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switch (opt) {
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case 'f':
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force = true;
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break;
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case 'h':
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case '?':
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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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}
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void Remove(const char *path) {
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const char *s;
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if (!force && access(path, W_OK) == -1) goto OnFail;
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if (unlink(path) == -1) goto OnFail;
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return;
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OnFail:
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if (force && errno == ENOENT) return;
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s = _strerdoc(errno);
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fputs(prog, stderr);
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fputs(": cannot remove '", stderr);
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fputs(path, stderr);
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fputs("': ", stderr);
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fputs(s, stderr);
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fputs("\n", stderr);
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exit(1);
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}
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int main(int argc, char *argv[]) {
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int i;
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prog = argc > 0 ? argv[0] : "rm.com";
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if (argc < 2) {
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fputs(prog, stderr);
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fputs(": missing operand\n"
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"Try 'rm -h' for more information.\n",
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stderr);
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exit(1);
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}
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GetOpts(argc, argv);
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for (i = optind; i < argc; ++i) {
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Remove(argv[i]);
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}
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}
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