sbase/sponge.c

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C
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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
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#include "text.h"
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s file\n", argv0);
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}
int
main(int argc, char *argv[])
{
FILE *fp, *tmpfp;
int ret = 0;
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argv0 = argv[0], argc--, argv++;
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if (argc != 1)
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usage();
if (!(tmpfp = tmpfile()))
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eprintf("tmpfile:");
concat(stdin, "<stdin>", tmpfp, "<tmpfile>");
rewind(tmpfp);
if (!(fp = fopen(argv[0], "w")))
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eprintf("fopen %s:", argv[0]);
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concat(tmpfp, "<tmpfile>", fp, argv[0]);
ret |= fshut(fp, argv[0]) | fshut(tmpfp, "<tmpfile>");
return ret;
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}