89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2022 The FreeBSD Foundation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <libgen.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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extern int main_decode(int, char *[]);
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extern int main_encode(int, char *[]);
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static int search(const char *const);
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enum coders {
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uuencode, uudecode, b64encode, b64decode
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};
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int
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main(int argc, char *argv[])
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{
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const char *const progname = getprogname();
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int coder = search(progname);
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if (coder == -1 && argc > 1) {
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argc--;
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argv++;
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coder = search(argv[0]);
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}
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switch (coder) {
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case uuencode:
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case b64encode:
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main_encode(argc, argv);
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break;
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case uudecode:
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case b64decode:
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main_decode(argc, argv);
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break;
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default:
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(void)fprintf(stderr,
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"usage: %s <uuencode | uudecode> ...\n"
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" %s <b64encode | b64decode> ...\n",
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progname, progname);
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exit(EX_USAGE);
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}
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}
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static int
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search(const char *const progname)
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{
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#define DESIGNATE(item) [item] = #item
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const char *const known[] = {
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DESIGNATE(uuencode),
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DESIGNATE(uudecode),
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DESIGNATE(b64encode),
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DESIGNATE(b64decode)
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};
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for (size_t i = 0; i < nitems(known); i++)
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if (strcmp(progname, known[i]) == 0)
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return ((int)i);
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return (-1);
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}
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