d2824f5294
This reverts commit 9016d288f1.
Tools that have no options are required by POSIX to support "--" so
that conforming applications have a way to shield their operands from
implementations that provide options as an extension.
echo(1) is just an exception, so it is handled specially.
See OPTIONS in https://pubs.opengroup.org/onlinepubs/9699919799.2018edition/utilities/V3_chap01.html#tag_17_04
43 lines
701 B
C
43 lines
701 B
C
/* See LICENSE file for copyright and license details. */
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s file\n", argv0);
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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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char tmp[] = "/tmp/sponge-XXXXXX";
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int fd, tmpfd;
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ARGBEGIN {
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default:
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usage();
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} ARGEND
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if (argc != 1)
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usage();
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if ((tmpfd = mkstemp(tmp)) < 0)
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eprintf("mkstemp:");
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unlink(tmp);
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if (concat(0, "<stdin>", tmpfd, "<tmpfile>") < 0)
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return 1;
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if (lseek(tmpfd, 0, SEEK_SET) < 0)
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eprintf("lseek:");
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if ((fd = creat(argv[0], 0666)) < 0)
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eprintf("creat %s:", argv[0]);
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if (concat(tmpfd, "<tmpfile>", fd, argv[0]) < 0)
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return 1;
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return 0;
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}
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