mirror of https://github.com/GnoConsortium/gno.git
383 lines
8.1 KiB
C
Executable File
383 lines
8.1 KiB
C
Executable File
/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Modified for GNO (Apple IIgs) by Steve Reeves, January 1998
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*
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* Added conditional compilation based on these macros:
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*
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* __ORCAC__ for constructs unacceptable to the compiler,
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* __GNO__ for changes not related to the compiler,
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* __STDC__ or __P() from <sys/cdefs.h> for ISO C prototyping,
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* __STACK_CHECK__ for reporting stack space usage,
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* NOID for excluding copyright and version control strings
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*
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* $Id: colcrt.c,v 1.1 1998/02/17 03:12:30 gdr-ftp Exp $
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*
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*/
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#ifndef NOID
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1980, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)colcrt.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#endif /* NOID */
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#include <stdio.h>
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#ifdef __GNO__
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#include <sys/cdefs.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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#include <gno/gno.h>
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#endif
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/*
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* colcrt - replaces col for crts with new nroff esp. when using tbl.
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* Bill Joy UCB July 14, 1977
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*
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* This filter uses a screen buffer, 267 half-lines by 132 columns.
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* It interprets the up and down sequences generated by the new
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* nroff when used with tbl and by \u \d and \r.
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* General overstriking doesn't work correctly.
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* Underlining is split onto multiple lines, etc.
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*
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* Option - suppresses all underlining.
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* Option -2 forces printing of all half lines.
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*
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* For GNO: Option -V prints version information and exits.
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*/
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#ifndef __ORCAC__
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char page[267][132];
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#else
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char *page;
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#endif
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int outline = 1;
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int outcol;
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char suppresul;
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char printall;
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FILE *f;
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static void usage __P((void));
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#ifdef __STDC__
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int plus(char c, char d);
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void pflush(int ol);
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void move(int l, int m);
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#endif
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#if defined(__GNO__) && defined(__STACK_CHECK__)
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/* Interface to check on how much stack space a C program uses. */
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#ifndef _GNO_GNO_H_
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#include <gno/gno.h>
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#endif
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static void report_stack(void)
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{
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fprintf(stderr,"\n ==> %d stack bytes used <== \n", _endStackCheck());
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}
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#endif
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int
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#ifndef __STDC__
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main(argc, argv)
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int argc;
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char *argv[];
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#else
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main(int argc, char *argv[])
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#endif
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{
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register int c;
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register char *cp, *dp;
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#if defined(__GNO__) && defined(__STACK_CHECK__)
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_beginStackCheck();
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atexit(report_stack);
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#endif
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argc--;
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argv++;
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while (argc > 0 && argv[0][0] == '-') {
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switch (argv[0][1]) {
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case '\0':
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suppresul = 1;
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break;
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case '2':
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printall = 1;
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break;
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#ifdef __GNO__
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case 'V':
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puts("colcrt v1.0");
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exit(0);
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#endif
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default:
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#ifdef __GNO__
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fprintf(stderr, "%s: illegal option -- %c\n",
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__prognameGS(), argv[0][1]);
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#endif
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usage();
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}
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argc--;
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argv++;
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}
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#ifdef __ORCAC__
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/* Dynamically allocate the page buffer, so we can use the
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small memory model; buffer MUST be initialized to zeroes */
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if ((page = calloc(1, 267 * 132L)) == NULL)
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err(1, NULL);
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#endif
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do {
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if (argc > 0) {
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#ifndef __GNO__
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close(0);
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if (!(f = fopen(argv[0], "r"))) {
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#else
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if (!(f = freopen(argv[0], "r", stdin))) {
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#endif
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fflush(stdout);
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err(1, argv[0]);
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}
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argc--;
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argv++;
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}
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for (;;) {
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c = getc(stdin);
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if (c == -1) {
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pflush(outline);
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fflush(stdout);
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break;
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}
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switch (c) {
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case '\n':
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if (outline >= 265)
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pflush(62);
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outline += 2;
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outcol = 0;
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continue;
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case '\016':
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case '\017':
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continue;
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case '\033':
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c = getc(stdin);
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switch (c) {
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case '9':
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if (outline >= 266)
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pflush(62);
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outline++;
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continue;
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case '8':
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if (outline >= 1)
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outline--;
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continue;
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case '7':
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outline -= 2;
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if (outline < 0)
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outline = 0;
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continue;
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default:
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continue;
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}
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case '\b':
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if (outcol)
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outcol--;
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continue;
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case '\t':
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outcol += 8;
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outcol &= ~7;
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outcol--;
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c = ' ';
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default:
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if (outcol >= 132) {
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outcol++;
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continue;
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}
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#ifndef __ORCAC__
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cp = &page[outline][outcol];
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#else
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cp = page + 132L*outline + outcol;
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#endif
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outcol++;
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if (c == '_') {
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if (suppresul)
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continue;
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cp += 132;
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c = '-';
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}
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if (*cp == '\0') {
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*cp = c;
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dp = cp - outcol;
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for (cp--; cp >= dp && *cp == '\0'; cp--)
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*cp = ' ';
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} else
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if (plus(c, *cp) || plus(*cp, c))
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*cp = '+';
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else if (*cp == ' ' || *cp == '\0')
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*cp = c;
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continue;
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}
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}
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} while (argc > 0);
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fflush(stdout);
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exit(0);
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}
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static void
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usage __P((void))
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{
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#ifndef __GNO__
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fprintf(stderr, "usage: colcrt [ - ] [ -2 ] [ file ... ]\n");
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#else
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fprintf(stderr, "usage: %s [ - ] [ -2 ] [ -V ] [ file ... ]\n",
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__prognameGS());
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#endif
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exit(1);
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}
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#ifndef __STDC__
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plus(c, d)
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char c, d;
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#else
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int
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plus(char c, char d)
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#endif
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{
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return (c == '|' && d == '-' || d == '_');
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}
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int first;
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#ifndef __STDC__
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pflush(ol)
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int ol;
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#else
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void
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pflush(int ol)
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#endif
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{
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register int i, j;
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register char *cp;
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char lastomit;
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int l;
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l = ol;
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lastomit = 0;
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if (l > 266)
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l = 266;
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else
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l |= 1;
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for (i = first | 1; i < l; i++) {
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move(i, i - 1);
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move(i, i + 1);
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}
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for (i = first; i < l; i++) {
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#ifndef __ORCAC__
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cp = page[i];
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#else
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cp = page + 132L*i;
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#endif
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if (printall == 0 && lastomit == 0 && *cp == '\0') {
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lastomit = 1;
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continue;
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}
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lastomit = 0;
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#ifndef __GNO__
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printf("%s\n", cp);
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#else
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puts(cp);
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#endif
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}
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#ifndef __ORCAC__
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bcopy(page[ol], page, (267 - ol) * 132);
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bzero(page[267- ol], ol * 132);
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#else
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bcopy(page + 132L*ol, page, (267 - ol) * 132L);
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bzero(page + 132L*(267-ol), ol * 132L);
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#endif
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outline -= ol;
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outcol = 0;
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first = 1;
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}
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#ifndef __STDC__
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move(l, m)
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int l, m;
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#else
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void
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move(int l, int m)
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#endif
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{
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register char *cp, *dp;
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#ifndef __ORCAC__
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for (cp = page[l], dp = page[m]; *cp; cp++, dp++) {
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#else
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for (cp = page + 132L*l, dp = page + 132L*m; *cp; cp++, dp++) {
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#endif
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switch (*cp) {
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case '|':
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if (*dp != ' ' && *dp != '|' && *dp != '\0')
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return;
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break;
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case ' ':
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break;
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default:
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return;
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}
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}
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if (*cp == '\0') {
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#ifndef __ORCAC__
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for (cp = page[l], dp = page[m]; *cp; cp++, dp++)
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#else
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for (cp = page + 132L*l, dp = page + 132L*m; *cp; cp++, dp++)
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#endif
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if (*cp == '|')
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*dp = '|';
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else if (*dp == '\0')
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*dp = ' ';
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#ifndef __ORCAC__
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page[l][0] = '\0';
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#else
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*(page + 132L*l) = '\0';
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#endif
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}
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}
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