BSD 4.4 Lite Usr.bin Sources

4 files changed, 375 insertions, 0 deletions

diff --git a/usr.bin/vis/Makefile b/usr.bin/vis/Makefile
new file mode 100644
index 0000000..8f83a14
--- /dev/null
+++ b/usr.bin/vis/Makefile
@@ -0,0 +1,6 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	vis
+SRCS=	vis.c foldit.c
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/vis/foldit.c b/usr.bin/vis/foldit.c
new file mode 100644
index 0000000..2682e85
--- /dev/null
+++ b/usr.bin/vis/foldit.c
@@ -0,0 +1,72 @@
+/*-
+ * Copyright (c) 1990, 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 sccsid[] = "@(#)foldit.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+foldit(chunk, col, max)
+	char *chunk;
+{
+	register char *cp;
+
+	/*
+	 * Keep track of column position. Insert hidden newline
+	 * if this chunk puts us over the limit.
+	 */
+again:
+	cp = chunk;
+	while (*cp) {
+		switch(*cp) {
+		case '\n':
+		case '\r':
+			col = 0;
+			break;
+		case '\t':
+			col = col + 8 &~ 07;
+			break;
+		case '\b':
+			col = col ? col - 1 : 0;
+			break;
+		default:
+			col++;
+		}
+		if (col > (max - 2)) {
+			printf("\\\n");
+			col = 0;
+			goto again;
+		} 
+		cp++;
+	}
+	return (col);
+}
diff --git a/usr.bin/vis/vis.1 b/usr.bin/vis/vis.1
new file mode 100644
index 0000000..784e56c
--- /dev/null
+++ b/usr.bin/vis/vis.1
@@ -0,0 +1,124 @@
+.\" Copyright (c) 1989, 1991, 1993, 1994
+.\"	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.
+.\"
+.\"     @(#)vis.1	8.4 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt VIS 1
+.Os BSD 4.4
+.Sh NAME
+.Nm vis
+.Nd display non-printable characters in a visual format
+.Sh SYNOPSIS
+.Nm vis
+.Op Fl cbflnostw
+.Op Fl F Ar foldwidth
+.Op Ar file ...
+.Sh DESCRIPTION
+.Nm Vis
+is a filter for converting non-printable characters
+into a visual representation.  It differs from
+.Ql cat -v
+in that
+the form is unique and invertible.  By default, all non-graphic
+characters except space, tab, and newline are encoded.
+A detailed description of the
+various visual formats is given in
+.Xr vis 3 .
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl b
+Turns off prepending of backslash before up-arrow control sequences
+and meta characters, and disables the doubling of backslashes.  This
+produces output which is neither invertible or precise, but does
+represent a minimum of change to the input.  It is similar to
+.Dq Li cat -v .
+.It Fl c
+Request a format which displays a small subset of the
+non-printable characters using C-style backslash sequences.
+.It Fl F
+Causes
+.Nm vis
+to fold output lines to foldwidth columns (default 80), like
+.Xr fold 1 ,
+except
+that a hidden newline sequence is used, (which is removed
+when inverting the file back to its original form with
+.Xr unvis 1 ) .
+If the last character in the encoded file does not end in a newline,
+a hidden newline sequence is appended to the output.
+This makes
+the output usable with various editors and other utilities which
+typically don't work with partial lines.
+.It Fl f
+Same as
+.Fl F .
+.It Fl l
+Mark newlines with the visible sequence
+.Ql \e$ ,
+followed by the newline.
+.It Fl n
+Turns off any encoding, except for the fact that backslashes are
+still doubled and hidden newline sequences inserted if
+.Fl f
+or
+.Fl F
+is selected.  When combined with the
+.Fl f
+flag,
+.Nm vis
+becomes like
+an invertible version of the
+.Xr fold 1
+utility.  That is, the output
+can be unfolded by running the output through
+.It Fl o
+Request a format which displays non-printable characters as
+an octal number, \eddd.
+.It Fl s
+Only characters considered unsafe to send to a terminal are encoded.
+This flag allows backspace, bell, and carriage return in addition
+to the default space, tab and newline.
+.Xr unvis 1 .
+.It Fl t
+Tabs are also encoded.
+.It Fl w
+White space (space-tab-newline) is also encoded.
+.El
+.Sh SEE ALSO
+.Xr unvis 1 ,
+.Xr vis 3
+.Sh HISTORY
+The
+.Nm
+command appears in
+.Bx 4.4 .
diff --git a/usr.bin/vis/vis.c b/usr.bin/vis/vis.c
new file mode 100644
index 0000000..94c9d41
--- /dev/null
+++ b/usr.bin/vis/vis.c
@@ -0,0 +1,173 @@
+/*-
+ * Copyright (c) 1989, 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) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)vis.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <vis.h>
+
+int eflags, fold, foldwidth=80, none, markeol, debug;
+
+main(argc, argv) 
+	char *argv[];
+{
+	extern char *optarg;
+	extern int optind;
+	extern int errno;
+	FILE *fp;
+	int ch;
+
+	while ((ch = getopt(argc, argv, "nwctsobfF:ld")) != EOF)
+		switch((char)ch) {
+		case 'n':
+			none++;
+			break;
+		case 'w':
+			eflags |= VIS_WHITE;
+			break;
+		case 'c':
+			eflags |= VIS_CSTYLE;
+			break;
+		case 't':
+			eflags |= VIS_TAB;
+			break;
+		case 's':
+			eflags |= VIS_SAFE;
+			break;
+		case 'o':
+			eflags |= VIS_OCTAL;
+			break;
+		case 'b':
+			eflags |= VIS_NOSLASH;
+			break;
+		case 'F':
+			if ((foldwidth = atoi(optarg))<5) {
+				fprintf(stderr, 
+				 "vis: can't fold lines to less than 5 cols\n");
+				exit(1);
+			}
+			/*FALLTHROUGH*/
+		case 'f':
+			fold++;		/* fold output lines to 80 cols */
+			break;		/* using hidden newline */
+		case 'l':
+			markeol++;	/* mark end of line with \$ */
+			break;
+#ifdef DEBUG
+		case 'd':
+			debug++;
+			break;
+#endif
+		case '?':
+		default:
+			fprintf(stderr, 
+		"usage: vis [-nwctsobf] [-F foldwidth]\n");
+			exit(1);
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (*argv)
+		while (*argv) {
+			if ((fp=fopen(*argv, "r")) != NULL)
+				process(fp, *argv);
+			else
+				fprintf(stderr, "vis: %s: %s\n", *argv,
+				    (char *)strerror(errno));
+			argv++;
+		}
+	else
+		process(stdin, "<stdin>");
+	exit(0);
+}
+	
+process(fp, filename)
+	FILE *fp;
+	char *filename;
+{
+	static int col = 0;
+	register char *cp = "\0"+1;	/* so *(cp-1) starts out != '\n' */
+	register int c, rachar; 
+	register char nc;
+	char buff[5];
+	
+	c = getc(fp);
+	while (c != EOF) {
+		rachar = getc(fp);
+		if (none) {
+			cp = buff;
+			*cp++ = c;
+			if (c == '\\')
+				*cp++ = '\\';
+			*cp = '\0';
+		} else if (markeol && c == '\n') {
+			cp = buff;
+			if ((eflags & VIS_NOSLASH) == 0)
+				*cp++ = '\\';
+			*cp++ = '$';
+			*cp++ = '\n';
+			*cp = '\0';
+		} else 
+			(void) vis(buff, (char)c, eflags, (char)rachar);
+
+		cp = buff;
+		if (fold) {
+#ifdef DEBUG
+			if (debug)
+				printf("<%02d,", col);
+#endif
+			col = foldit(cp, col, foldwidth);
+#ifdef DEBUG
+			if (debug)
+				printf("%02d>", col);
+#endif
+		}
+		do {
+			putchar(*cp);
+		} while (*++cp);
+		c = rachar;
+	}
+	/*
+	 * terminate partial line with a hidden newline
+	 */
+	if (fold && *(cp-1) != '\n')
+		printf("\\\n");
+}