/*
* Copyright (c) 1980, 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. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
/*
* colcrt - replaces col for crts with new nroff esp. when using tbl.
* Bill Joy UCB July 14, 1977
*
* This filter uses a screen buffer, 267 half-lines by 132 columns.
* It interprets the up and down sequences generated by the new
* nroff when used with tbl and by \u \d and \r.
* General overstriking doesn't work correctly.
* Underlining is split onto multiple lines, etc.
*
* Option - suppresses all underlining.
* Option -2 forces printing of all half lines.
*/
char page[267][132];
int outline = 1;
int outcol;
char suppresul;
char printall;
char *progname;
FILE *f;
void move(int, int);
void pflush(int);
int plus(char, char);
int
main(int argc, char *argv[])
{
int c;
char *cp, *dp;
argc--;
progname = *argv++;
while (argc > 0 && argv[0][0] == '-') {
switch (argv[0][1]) {
case 0:
suppresul = 1;
break;
case '2':
printall = 1;
break;
default:
printf("usage: %s [ - ] [ -2 ] [ file ... ]\n", progname);
fflush(stdout);
exit(1);
}
argc--;
argv++;
}
do {
if (argc > 0) {
close(0);
if (!(f = fopen(argv[0], "r"))) {
fflush(stdout);
perror(argv[0]);
exit (1);
}
argc--;
argv++;
}
for (;;) {
c = getc(stdin);
if (c == -1) {
pflush(outline);
fflush(stdout);
break;
}
switch (c) {
case '\n':
if (outline >= 265)
pflush(62);
outline += 2;
outcol = 0;
continue;
case '\016':
case '\017':
continue;
case 033:
c = getc(stdin);
switch (c) {
case '9':
if (outline >= 266)
pflush(62);
outline++;
continue;
case '8':
if (outline >= 1)
outline--;
continue;
case '7':
outline -= 2;
if (outline < 0)
outline = 0;
continue;
default:
continue;
}
case '\b':
if (outcol)
outcol--;
continue;
case '\t':
outcol += 8;
outcol &= ~7;
outcol--;
c = ' ';
/* FALLTHROUGH */
default:
if (outcol >= 132) {
outcol++;
continue;
}
cp = &page[outline][outcol];
outcol++;
if (c == '_') {
if (suppresul)
continue;
cp += 132;
c = '-';
}
if (*cp == 0) {
*cp = c;
dp = cp - outcol;
for (cp--; cp >= dp && *cp == 0; cp--)
*cp = ' ';
} else
if (plus(c, *cp) || plus(*cp, c))
*cp = '+';
else if (*cp == ' ' || *cp == 0)
*cp = c;
continue;
}
}
} while (argc > 0);
fflush(stdout);
exit(0);
}
int
plus(char c, char d)
{
return ((c == '|' && d == '-') || d == '_');
}
int first;
void
pflush(int ol)
{
int i;
char *cp;
char lastomit;
int l;
l = ol;
lastomit = 0;
if (l > 266)
l = 266;
else
l |= 1;
for (i = first | 1; i < l; i++) {
move(i, i - 1);
move(i, i + 1);
}
for (i = first; i < l; i++) {
cp = page[i];
if (printall == 0 && lastomit == 0 && *cp == 0) {
lastomit = 1;
continue;
}
lastomit = 0;
printf("%s\n", cp);
}
memmove(page, page[ol], (267 - ol) * 132);
memset(page[267- ol], 0, ol * 132);
outline -= ol;
outcol = 0;
first = 1;
}
void
move(int l, int m)
{
char *cp, *dp;
for (cp = page[l], dp = page[m]; *cp; cp++, dp++) {
switch (*cp) {
case '|':
if (*dp != ' ' && *dp != '|' && *dp != 0)
return;
break;
case ' ':
break;
default:
return;
}
}
if (*cp == 0) {
for (cp = page[l], dp = page[m]; *cp; cp++, dp++)
if (*cp == '|')
*dp = '|';
else if (*dp == 0)
*dp = ' ';
page[l][0] = 0;
}
}
