89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
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/*
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* Copy the files given as arguments to the standard output. The file
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* name "-" refers to the standard input.
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*
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* Copyright (C) 1989 by Kenneth Almquist. All rights reserved.
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* This file is part of ash, which is distributed under the terms specified
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* by the Ash General Public License. See the file named LICENSE.
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*/
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#define main catfcmd
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#include "bltin.h"
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#include "../error.h"
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#include <sys/param.h>
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#include <fcntl.h>
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#ifdef SBUFSIZE
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#define BUFSIZE() SBUFSIZE
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#else
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#ifdef MAXBSIZE
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#define BUFSIZE() MAXBSIZE
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#else
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#define BUFSIZE() BSIZE
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#endif
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#endif
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main(argc, argv) char **argv; {
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char *filename;
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char *buf = stalloc(BUFSIZE());
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int fd;
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int i;
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#ifdef SHELL
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volatile int input;
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struct jmploc jmploc;
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struct jmploc *volatile savehandler;
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#endif
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INITARGS(argv);
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#ifdef SHELL
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input = -1;
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if (setjmp(jmploc.loc)) {
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close(input);
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handler = savehandler;
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longjmp(handler, 1);
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}
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savehandler = handler;
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handler = &jmploc;
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#endif
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while ((filename = *++argv) != NULL) {
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if (filename[0] == '-' && filename[1] == '\0') {
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fd = 0;
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} else {
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#ifdef SHELL
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INTOFF;
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if ((fd = open(filename, O_RDONLY)) < 0)
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error("Can't open %s", filename);
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input = fd;
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INTON;
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#else
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if ((fd = open(filename, O_RDONLY)) < 0) {
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fprintf(stderr, "catf: Can't open %s\n", filename);
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exit(2);
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}
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#endif
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}
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while ((i = read(fd, buf, BUFSIZE())) > 0) {
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#ifdef SHELL
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if (out1 == &memout) {
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register char *p;
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for (p = buf ; --i >= 0 ; p++) {
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outc(*p, &memout);
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}
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} else {
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write(1, buf, i);
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}
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#else
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write(1, buf, i);
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#endif
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}
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if (fd != 0)
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close(fd);
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}
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#ifdef SHELL
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handler = savehandler;
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#endif
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}
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