From e3cfc8ce61f788739c66445d903f8beacb40c93d Mon Sep 17 00:00:00 2001 From: rgrimes Date: Thu, 26 May 1994 06:18:55 +0000 Subject: BSD 4.4 Lite bin Sources --- bin/cat/Makefile | 5 ++ bin/cat/cat.1 | 121 +++++++++++++++++++++++++++ bin/cat/cat.c | 251 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 377 insertions(+) create mode 100644 bin/cat/Makefile create mode 100644 bin/cat/cat.1 create mode 100644 bin/cat/cat.c (limited to 'bin/cat') diff --git a/bin/cat/Makefile b/bin/cat/Makefile new file mode 100644 index 0000000..c2d7cb5 --- /dev/null +++ b/bin/cat/Makefile @@ -0,0 +1,5 @@ +# @(#)Makefile 8.1 (Berkeley) 5/31/93 + +PROG= cat + +.include diff --git a/bin/cat/cat.1 b/bin/cat/cat.1 new file mode 100644 index 0000000..102b22e --- /dev/null +++ b/bin/cat/cat.1 @@ -0,0 +1,121 @@ +.\" Copyright (c) 1989, 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)cat.1 8.1 (Berkeley) 6/29/93 +.\" +.Dd June 29, 1993 +.Dt CAT 1 +.Os BSD 3 +.Sh NAME +.Nm cat +.Nd concatenate and print files +.Sh SYNOPSIS +.Nm cat +.Op Fl benstuv +.Op Fl +.Op Ar +.Sh DESCRIPTION +The +.Nm cat +utility reads files sequentially, writing them to the standard output. +The +.Ar file +operands are processed in command line order. +A single dash represents the standard input. +.Pp +The options are as follows: +.Bl -tag -width Ds +.It Fl b +Implies the +.Fl n +option but doesn't number blank lines. +.It Fl e +Implies the +.Fl v +option, and displays a dollar sign +.Pq Ql \&$ +at the end of each line +as well. +.It Fl n +Number the +.Ar output +lines, starting at 1. +.It Fl s +Squeeze multiple adjacent empty lines, causing the output to be +single spaced. +.It Fl t +Implies the +.Fl v +option, and displays tab characters as +.Pq Ql ^I +as well. +.It Fl u +The +.Fl u +option guarantees that the output is unbuffered. +.It Fl v +Displays non-printing characters so they are visible. +Control characters print as +.Ql ^X +for control-X; the delete +character (octal 0177) prints as +.Ql ^? +Non-ascii characters (with the high bit set) are printed as +.Ql M- +(for meta) followed by the character for the low 7 bits. +.El +.Pp +The +.Nm cat +utility exits 0 on success, and >0 if an error occurs. +.Sh BUGS +Because of the shell language mechanism used to perform output +redirection, the command +.Dq Li cat file1 file 2 > file1 +will cause the original data in file1 to be destroyed! +.Sh SEE ALSO +.Xr head 1 , +.Xr more 1 , +.Xr pr 1 , +.Xr tail 1 +.Rs +.%A Rob Pike +.%T "UNIX Style, or cat -v Considered Harmful" +.%J "USENIX Summer Conference Proceedings" +.%D 1983 +.Re +.Sh HISTORY +A +.Nm +command appeared in Version 6 AT&T UNIX. diff --git a/bin/cat/cat.c b/bin/cat/cat.c new file mode 100644 index 0000000..30e5bfc --- /dev/null +++ b/bin/cat/cat.c @@ -0,0 +1,251 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kevin Fall. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char copyright[] = +"@(#) Copyright (c) 1989, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)cat.c 8.1 (Berkeley) 7/19/93"; +#endif /* not lint */ + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +int bflag, eflag, nflag, sflag, tflag, vflag; +int rval; +char *filename; + +void cook_args __P((char *argv[])); +void cook_buf __P((FILE *)); +void raw_args __P((char *argv[])); +void raw_cat __P((int)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + extern int optind; + int ch; + + while ((ch = getopt(argc, argv, "benstuv")) != EOF) + switch (ch) { + case 'b': + bflag = nflag = 1; /* -b implies -n */ + break; + case 'e': + eflag = vflag = 1; /* -e implies -v */ + break; + case 'n': + nflag = 1; + break; + case 's': + sflag = 1; + break; + case 't': + tflag = vflag = 1; /* -t implies -v */ + break; + case 'u': + setbuf(stdout, (char *)NULL); + break; + case 'v': + vflag = 1; + break; + case '?': + (void)fprintf(stderr, + "usage: cat [-benstuv] [-] [file ...]\n"); + exit(1); + } + argv += optind; + + if (bflag || eflag || nflag || sflag || tflag || vflag) + cook_args(argv); + else + raw_args(argv); + if (fclose(stdout)) + err(1, "stdout"); + exit(rval); +} + +void +cook_args(argv) + char **argv; +{ + register FILE *fp; + + fp = stdin; + filename = "stdin"; + do { + if (*argv) { + if (!strcmp(*argv, "-")) + fp = stdin; + else if ((fp = fopen(*argv, "r")) == NULL) { + warn("%s", *argv); + ++argv; + continue; + } + filename = *argv++; + } + cook_buf(fp); + if (fp != stdin) + (void)fclose(fp); + } while (*argv); +} + +void +cook_buf(fp) + register FILE *fp; +{ + register int ch, gobble, line, prev; + + line = gobble = 0; + for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) { + if (prev == '\n') { + if (ch == '\n') { + if (sflag) { + if (!gobble && putchar(ch) == EOF) + break; + gobble = 1; + continue; + } + if (nflag && !bflag) { + (void)fprintf(stdout, "%6d\t", ++line); + if (ferror(stdout)) + break; + } + } else if (nflag) { + (void)fprintf(stdout, "%6d\t", ++line); + if (ferror(stdout)) + break; + } + } + gobble = 0; + if (ch == '\n') { + if (eflag) + if (putchar('$') == EOF) + break; + } else if (ch == '\t') { + if (tflag) { + if (putchar('^') == EOF || putchar('I') == EOF) + break; + continue; + } + } else if (vflag) { + if (!isascii(ch)) { + if (putchar('M') == EOF || putchar('-') == EOF) + break; + ch = toascii(ch); + } + if (iscntrl(ch)) { + if (putchar('^') == EOF || + putchar(ch == '\177' ? '?' : + ch | 0100) == EOF) + break; + continue; + } + } + if (putchar(ch) == EOF) + break; + } + if (ferror(fp)) { + warn("%s", filename); + clearerr(fp); + } + if (ferror(stdout)) + err(1, "stdout"); +} + +void +raw_args(argv) + char **argv; +{ + register int fd; + + fd = fileno(stdin); + filename = "stdin"; + do { + if (*argv) { + if (!strcmp(*argv, "-")) + fd = fileno(stdin); + else if ((fd = open(*argv, O_RDONLY, 0)) < 0) { + warn("%s", *argv); + ++argv; + continue; + } + filename = *argv++; + } + raw_cat(fd); + if (fd != fileno(stdin)) + (void)close(fd); + } while (*argv); +} + +void +raw_cat(rfd) + register int rfd; +{ + register int nr, nw, off, wfd; + static int bsize; + static char *buf; + struct stat sbuf; + + wfd = fileno(stdout); + if (buf == NULL) { + if (fstat(wfd, &sbuf)) + err(1, "%s", filename); + bsize = MAX(sbuf.st_blksize, 1024); + if ((buf = malloc((u_int)bsize)) == NULL) + err(1, ""); + } + while ((nr = read(rfd, buf, bsize)) > 0) + for (off = 0; nr; nr -= nw, off += nw) + if ((nw = write(wfd, buf + off, nr)) < 0) + err(1, "stdout"); + if (nr < 0) + warn("%s", filename); +} -- cgit v1.1