From fc2edd99ab525f03b9f011816e2bbea522ba7e4a Mon Sep 17 00:00:00 2001 From: "William F. Jolitz" Date: Thu, 18 Apr 1991 17:41:46 -0800 Subject: [PATCH] 386BSD 0.0 development Work on file usr/src/usr.bin/vis/vis.c Work on file usr/src/usr.bin/vis/foldit.c Co-Authored-By: Lynne Greer Jolitz Synthesized-from: 386BSD-0.0/src --- usr/src/usr.bin/vis/foldit.c | 72 +++++++++++++++ usr/src/usr.bin/vis/vis.c | 173 +++++++++++++++++++++++++++++++++++ 2 files changed, 245 insertions(+) create mode 100644 usr/src/usr.bin/vis/foldit.c create mode 100644 usr/src/usr.bin/vis/vis.c diff --git a/usr/src/usr.bin/vis/foldit.c b/usr/src/usr.bin/vis/foldit.c new file mode 100644 index 0000000000..108c3fdb9f --- /dev/null +++ b/usr/src/usr.bin/vis/foldit.c @@ -0,0 +1,72 @@ +/*- + * Copyright (c) 1990 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 5.1 (Berkeley) 4/18/91"; +#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/src/usr.bin/vis/vis.c b/usr/src/usr.bin/vis/vis.c new file mode 100644 index 0000000000..91f007c395 --- /dev/null +++ b/usr/src/usr.bin/vis/vis.c @@ -0,0 +1,173 @@ +/*- + * Copyright (c) 1989 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 +char copyright[] = +"@(#) Copyright (c) 1989 The Regents of the University of California.\n\ + All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)vis.c 5.1 (Berkeley) 4/18/91"; +#endif /* not lint */ + +#include +#include + +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, ""); + 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"); +} -- 2.20.1