Add cat from 4.4BSD-Lite Release 2
authorJason Self <j@jxself.org>
Sun, 2 Dec 2018 17:41:53 +0000 (09:41 -0800)
committerJason Self <j@jxself.org>
Sun, 2 Dec 2018 17:41:53 +0000 (09:41 -0800)
Signed-off-by: Jason Self <j@jxself.org>
usr/src/bin/cat/Makefile [new file with mode: 0644]
usr/src/bin/cat/cat.1 [new file with mode: 0644]
usr/src/bin/cat/cat.c [new file with mode: 0644]

diff --git a/usr/src/bin/cat/Makefile b/usr/src/bin/cat/Makefile
new file mode 100644 (file)
index 0000000..c2d7cb5
--- /dev/null
@@ -0,0 +1,5 @@
+#      @(#)Makefile    8.1 (Berkeley) 5/31/93
+
+PROG=  cat
+
+.include <bsd.prog.mk>
diff --git a/usr/src/bin/cat/cat.1 b/usr/src/bin/cat/cat.1
new file mode 100644 (file)
index 0000000..82fd8da
--- /dev/null
@@ -0,0 +1,106 @@
+.\" 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. 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      8.3 (Berkeley) 5/2/95
+.\"
+.Dd May 2, 1995
+.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 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
+.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 ,
+.Xr vis 1
\ No newline at end of file
diff --git a/usr/src/bin/cat/cat.c b/usr/src/bin/cat/cat.c
new file mode 100644 (file)
index 0000000..9bf9d79
--- /dev/null
@@ -0,0 +1,248 @@
+/*
+ * 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. 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      8.2 (Berkeley) 4/27/95";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+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")) != -1)
+               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;
+               default:
+               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, NULL);
+       }
+       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);
+}