288 lines
6.1 KiB
C
288 lines
6.1 KiB
C
/*
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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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#ifndef lint
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static const 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
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#if 0
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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
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <err.h>
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#include <locale.h>
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#include <stdio.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 <wchar.h>
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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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wchar_t page[267][132];
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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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static void move(int, int);
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static void pflush(int);
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static int plus(wchar_t, wchar_t);
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static void usage(void);
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int
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main(int argc, char *argv[])
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{
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wint_t c;
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wchar_t *cp, *dp;
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int ch, i, w;
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setlocale(LC_ALL, "");
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while ((ch = getopt(argc, argv, "-2")) != -1)
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switch (ch) {
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case '-':
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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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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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do {
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if (argc > 0) {
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if (freopen(argv[0], "r", stdin) == NULL) {
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fflush(stdout);
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err(1, "%s", 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 = getwc(stdin);
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if (c == WEOF) {
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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 = getwc(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 ((w = wcwidth(c)) <= 0)
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w = 1; /* XXX */
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if (outcol + w > 132) {
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outcol += w;
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continue;
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}
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cp = &page[outline][outcol];
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outcol += w;
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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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for (i = 0; i < w; i++)
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cp[i] = c;
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dp = cp - (outcol - w);
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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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for (i = 1; i < w; i++)
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if (cp[i] != ' ' &&
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cp[i] != 0)
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goto cont;
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for (i = 0; i < w; i++)
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cp[i] = c;
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}
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}
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cont:
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continue;
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}
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}
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if (ferror(stdin))
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err(1, NULL);
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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(void)
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{
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fprintf(stderr, "usage: colcrt [-] [-2] [file ...]\n");
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exit(1);
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}
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static int
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plus(wchar_t c, wchar_t d)
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{
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return ((c == '|' && d == '-') || d == '_');
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}
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static void
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pflush(int ol)
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{
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static int first;
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int i;
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wchar_t *cp;
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char lastomit;
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int l, w;
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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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cp = page[i];
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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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while (*cp != L'\0') {
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if ((w = wcwidth(*cp)) > 0) {
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putwchar(*cp);
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cp += w;
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} else
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cp++;
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}
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putwchar(L'\n');
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}
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wmemcpy(page[0], page[ol], (267 - ol) * 132);
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wmemset(page[267- ol], L'\0', ol * 132);
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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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static void
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move(int l, int m)
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{
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wchar_t *cp, *dp;
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for (cp = page[l], dp = page[m]; *cp; cp++, dp++) {
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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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for (cp = page[l], dp = page[m]; *cp; cp++, dp++)
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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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page[l][0] = 0;
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}
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}
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