diff options
author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
---|---|---|
committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
commit | f9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch) | |
tree | add7e996bac5289cdc55e6935750c352505560a9 /usr.bin/rev | |
parent | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff) | |
download | FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz |
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/rev')
-rw-r--r-- | usr.bin/rev/Makefile | 5 | ||||
-rw-r--r-- | usr.bin/rev/rev.1 | 48 | ||||
-rw-r--r-- | usr.bin/rev/rev.c | 109 |
3 files changed, 162 insertions, 0 deletions
diff --git a/usr.bin/rev/Makefile b/usr.bin/rev/Makefile new file mode 100644 index 0000000..1952ce9 --- /dev/null +++ b/usr.bin/rev/Makefile @@ -0,0 +1,5 @@ +# @(#)Makefile 8.1 (Berkeley) 6/9/93 + +PROG= rev + +.include <bsd.prog.mk> diff --git a/usr.bin/rev/rev.1 b/usr.bin/rev/rev.1 new file mode 100644 index 0000000..7c50efc --- /dev/null +++ b/usr.bin/rev/rev.1 @@ -0,0 +1,48 @@ +.\" Copyright (c) 1985, 1992, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" 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. +.\" +.\" @(#)rev.1 8.1 (Berkeley) 6/9/93 +.\" +.Dd June 9, 1993 +.Dt REV 1 +.Os +.Sh NAME +.Nm rev +.Nd reverse lines of a file +.Sh SYNOPSIS +.Nm rev +.Op Ar file +.Sh DESCRIPTION +The +.Nm rev +utility copies the specified files to the standard output, reversing the +order of characters in every line. +If no files are specified, the standard input is read. diff --git a/usr.bin/rev/rev.c b/usr.bin/rev/rev.c new file mode 100644 index 0000000..fe95991 --- /dev/null +++ b/usr.bin/rev/rev.c @@ -0,0 +1,109 @@ +/*- + * Copyright (c) 1987, 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * 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) 1987, 1992, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)rev.c 8.2 (Berkeley) 1/2/94"; +#endif /* not lint */ + +#include <sys/types.h> + +#include <err.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +void usage __P((void)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + register char *filename, *p, *t; + FILE *fp; + size_t len; + int ch, rval; + + while ((ch = getopt(argc, argv, "")) != EOF) + switch(ch) { + case '?': + default: + usage(); + } + + argc -= optind; + argv += optind; + + fp = stdin; + filename = "stdin"; + rval = 0; + do { + if (*argv) { + if ((fp = fopen(*argv, "r")) == NULL) { + warn("%s", *argv); + rval = 1; + ++argv; + continue; + } + filename = *argv++; + } + while ((p = fgetln(fp, &len)) != NULL) { + if (p[len - 1] == '\n') + --len; + t = p + len - 1; + for (t = p + len - 1; t >= p; --t) + putchar(*t); + putchar('\n'); + } + if (ferror(fp)) { + warn("%s", filename); + rval = 1; + } + (void)fclose(fp); + } while(*argv); + exit(rval); +} + +void +usage() +{ + (void)fprintf(stderr, "usage: rev [file ...]\n"); + exit(1); +} |