Category : Word Processors
Archive   : CAWF.ZIP
Filename : BSFILT.C

 
Output of file : BSFILT.C contained in archive : CAWF.ZIP
/*
* bsfilt.c - a colcrt-like processor for cawf(1)
*/

/*
* Copyright (c) 1991 Purdue University Research Foundation,
* West Lafayette, Indiana 47907. All rights reserved.
*
* Written by Victor A. Abell , Purdue
* University Computing Center. Not derived from licensed software;
* derived from awf(1) by Henry Spencer of the University of Toronto.
*
* Permission is granted to anyone to use this software for any
* purpose on any computer system, and to alter it and redistribute
* it freely, subject to the following restrictions:
*
* 1. The author is not responsible for any consequences of use of
* this software, even if they arise from flaws in it.
*
* 2. The origin of this software must not be misrepresented, either
* by explicit claim or by omission. Credits must appear in the
* documentation.
*
* 3. Altered versions must be plainly marked as such, and must not
* be misrepresented as being the original software. Credits must
* appear in the documentation.
*
* 4. This notice may not be removed or altered.
*/

#include
#ifdef UNIX
#ifdef USG
#include
#else
#include
#endif
#else
#include
#endif

#define MAXLL 2048 /* ridiculous maximum line length */

int Dash = 1; /* underline with dashes */
int Dp = 0; /* dash pending */
int Lc = 0; /* line count */
char *Pname; /* program name */
char Ulb[MAXLL]; /* underline buffer */
int Ulx = 0; /* underline buffer index */

void Putchar();
#ifndef STDDEF
char *strrchr();
#endif

main(argc, argv)
int argc;
char *argv[];
{
int ax = 1; /* argument index */
int c; /* character buffer */
FILE *fs; /* file stream */
int nf = 0; /* number of files processed */
char pc; /* previous character */
int under = 0; /* underline */
/*
* Save program name.
*/
if ((Pname = strrchr(argv[0], '/')) != NULL)
Pname++;
else if ((Pname = strrchr(argv[0], '\\')) != NULL)
Pname++;
else
Pname = argv[0];
/*
* Process options.
*/
if (argc > 1 && argv[1][0] == '-') {
switch (argv[1][1]) {
/*
* "-U" - underline with dashes.
*/
case 'U':
Dash = 0;
under = 1;
break;
/*
* "-" - do no underlining at all.
*/
case '\0':
Dash = under = 0;
break;
default:
(void) fprintf(stderr,
"%s usage: [-] [-U] [file]\n", Pname);
exit(1);
}
ax++;
}
/*
* Process files. Read standard input if no files names.
*/

while (ax < argc || nf == 0) {
if (ax >= argc)
fs = stdin;
else {
#ifdef UNIX
if ((fs = fopen(argv[ax], "r")) == NULL)
#else
if ((fs = fopen(argv[ax], "rt")) == NULL)
#endif
{
(void) fprintf(stderr, "%s: can't open %s\n",
Pname, argv[ax]);
exit(1);
}
ax++;
}
nf++;
/*
* Read input a character at a time.
*/
for (pc = '\0'; (c = fgetc(fs)) != EOF;) {
switch(c) {

case '\n':
if (pc)
Putchar(pc);
Putchar('\n');
pc = '\0';
break;

case '\b':
if (pc == '_') {
if (under) {
putchar(pc);
putchar('\b');
} else if (Dash)
Dp = 1;
}
pc = '\0';
break;

default:
if (pc)
Putchar(pc);
pc = c;
}
}
if (pc) {
Putchar(pc);
Putchar('\n');
}
}
exit(0);
}


/*
* Putchar(ch) - put a character with possible underlining
*/

void
Putchar(ch)
char ch;
{
int i; /* temporary index */

if (ch == '\n') {
/*
* Handle end of line.
*/
putchar('\n');
if (Ulx) {
while (Ulx && Ulb[Ulx-1] == ' ')
Ulx--;
if (Ulx) {
for (i = 0; i < Ulx; i++)
putchar(Ulb[i]);
putchar('\n');
}
}
Dp = Ulx = 0;
Lc++;
return;
}
/*
* Put "normal" character.
*/
putchar(ch);
if (Dash) {

/*
* Handle dash-type underlining.
*/
if (Ulx >= MAXLL) {
(void) fprintf(stderr,
"%s: underline for line %d > %d characters\n",
Pname, Lc, MAXLL);
exit(1);
}
Ulb[Ulx++] = Dp ? '-' : ' ';
Dp = 0;
}
}


  3 Responses to “Category : Word Processors
Archive   : CAWF.ZIP
Filename : BSFILT.C

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/