587 lines
12 KiB
C
587 lines
12 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)ul.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <err.h>
|
|
#include <locale.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <termcap.h>
|
|
#include <unistd.h>
|
|
#include <wchar.h>
|
|
#include <wctype.h>
|
|
|
|
#define IESC '\033'
|
|
#define SO '\016'
|
|
#define SI '\017'
|
|
#define HFWD '9'
|
|
#define HREV '8'
|
|
#define FREV '7'
|
|
#define MAXBUF 512
|
|
|
|
#define NORMAL 000
|
|
#define ALTSET 001 /* Reverse */
|
|
#define SUPERSC 002 /* Dim */
|
|
#define SUBSC 004 /* Dim | Ul */
|
|
#define UNDERL 010 /* Ul */
|
|
#define BOLD 020 /* Bold */
|
|
|
|
static int must_use_uc, must_overstrike;
|
|
static const char
|
|
*CURS_UP, *CURS_RIGHT, *CURS_LEFT,
|
|
*ENTER_STANDOUT, *EXIT_STANDOUT, *ENTER_UNDERLINE, *EXIT_UNDERLINE,
|
|
*ENTER_DIM, *ENTER_BOLD, *ENTER_REVERSE, *UNDER_CHAR, *EXIT_ATTRIBUTES;
|
|
|
|
struct CHAR {
|
|
char c_mode;
|
|
wchar_t c_char;
|
|
int c_width; /* width or -1 if multi-column char. filler */
|
|
} ;
|
|
|
|
static struct CHAR sobuf[MAXBUF]; /* static output buffer */
|
|
static struct CHAR *obuf = sobuf;
|
|
static int buflen = MAXBUF;
|
|
static int col, maxcol;
|
|
static int mode;
|
|
static int halfpos;
|
|
static int upln;
|
|
static int iflag;
|
|
|
|
static void usage(void);
|
|
static void setnewmode(int);
|
|
static void initcap(void);
|
|
static void reverse(void);
|
|
static int outchar(int);
|
|
static void fwd(void);
|
|
static void initbuf(void);
|
|
static void iattr(void);
|
|
static void overstrike(void);
|
|
static void flushln(void);
|
|
static void filter(FILE *);
|
|
static void outc(wint_t, int);
|
|
|
|
#define PRINT(s) if (s == NULL) /* void */; else tputs(s, 1, outchar)
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int c;
|
|
const char *termtype;
|
|
FILE *f;
|
|
char termcap[1024];
|
|
|
|
setlocale(LC_ALL, "");
|
|
|
|
termtype = getenv("TERM");
|
|
if (termtype == NULL || (argv[0][0] == 'c' && !isatty(1)))
|
|
termtype = "lpr";
|
|
while ((c = getopt(argc, argv, "it:T:")) != -1)
|
|
switch (c) {
|
|
case 't':
|
|
case 'T': /* for nroff compatibility */
|
|
termtype = optarg;
|
|
break;
|
|
case 'i':
|
|
iflag = 1;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
switch (tgetent(termcap, termtype)) {
|
|
case 1:
|
|
break;
|
|
default:
|
|
warnx("trouble reading termcap");
|
|
/* FALLTHROUGH */
|
|
case 0:
|
|
/* No such terminal type - assume dumb */
|
|
(void)strcpy(termcap, "dumb:os:col#80:cr=^M:sf=^J:am:");
|
|
break;
|
|
}
|
|
initcap();
|
|
if ((tgetflag("os") && ENTER_BOLD == NULL ) ||
|
|
(tgetflag("ul") && ENTER_UNDERLINE == NULL && UNDER_CHAR == NULL))
|
|
must_overstrike = 1;
|
|
initbuf();
|
|
if (optind == argc)
|
|
filter(stdin);
|
|
else for (; optind<argc; optind++) {
|
|
f = fopen(argv[optind],"r");
|
|
if (f == NULL)
|
|
err(1, "%s", argv[optind]);
|
|
else
|
|
filter(f);
|
|
}
|
|
if (obuf != sobuf) {
|
|
free(obuf);
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: ul [-i] [-t terminal] [file ...]\n");
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
filter(FILE *f)
|
|
{
|
|
wint_t c;
|
|
int i, w;
|
|
int copy;
|
|
|
|
copy = 0;
|
|
|
|
while ((c = getwc(f)) != WEOF) {
|
|
if (col == buflen) {
|
|
if (obuf == sobuf) {
|
|
obuf = NULL;
|
|
copy = 1;
|
|
}
|
|
obuf = realloc(obuf, sizeof(*obuf) * 2 * buflen);
|
|
if (obuf == NULL) {
|
|
obuf = sobuf;
|
|
break;
|
|
} else if (copy) {
|
|
memcpy(obuf, sobuf, sizeof(*obuf) * buflen);
|
|
copy = 0;
|
|
}
|
|
bzero((char *)(obuf + buflen), sizeof(*obuf) * buflen);
|
|
buflen *= 2;
|
|
}
|
|
switch(c) {
|
|
case '\b':
|
|
if (col > 0)
|
|
col--;
|
|
continue;
|
|
|
|
case '\t':
|
|
col = (col+8) & ~07;
|
|
if (col > maxcol)
|
|
maxcol = col;
|
|
continue;
|
|
|
|
case '\r':
|
|
col = 0;
|
|
continue;
|
|
|
|
case SO:
|
|
mode |= ALTSET;
|
|
continue;
|
|
|
|
case SI:
|
|
mode &= ~ALTSET;
|
|
continue;
|
|
|
|
case IESC:
|
|
switch (c = getwc(f)) {
|
|
|
|
case HREV:
|
|
if (halfpos == 0) {
|
|
mode |= SUPERSC;
|
|
halfpos--;
|
|
} else if (halfpos > 0) {
|
|
mode &= ~SUBSC;
|
|
halfpos--;
|
|
} else {
|
|
halfpos = 0;
|
|
reverse();
|
|
}
|
|
continue;
|
|
|
|
case HFWD:
|
|
if (halfpos == 0) {
|
|
mode |= SUBSC;
|
|
halfpos++;
|
|
} else if (halfpos < 0) {
|
|
mode &= ~SUPERSC;
|
|
halfpos++;
|
|
} else {
|
|
halfpos = 0;
|
|
fwd();
|
|
}
|
|
continue;
|
|
|
|
case FREV:
|
|
reverse();
|
|
continue;
|
|
|
|
default:
|
|
errx(1, "unknown escape sequence in input: %o, %o", IESC, c);
|
|
}
|
|
continue;
|
|
|
|
case '_':
|
|
if (obuf[col].c_char || obuf[col].c_width < 0) {
|
|
while (col > 0 && obuf[col].c_width < 0)
|
|
col--;
|
|
w = obuf[col].c_width;
|
|
for (i = 0; i < w; i++)
|
|
obuf[col++].c_mode |= UNDERL | mode;
|
|
if (col > maxcol)
|
|
maxcol = col;
|
|
continue;
|
|
}
|
|
obuf[col].c_char = '_';
|
|
obuf[col].c_width = 1;
|
|
/* FALLTHROUGH */
|
|
case ' ':
|
|
col++;
|
|
if (col > maxcol)
|
|
maxcol = col;
|
|
continue;
|
|
|
|
case '\n':
|
|
flushln();
|
|
continue;
|
|
|
|
case '\f':
|
|
flushln();
|
|
putwchar('\f');
|
|
continue;
|
|
|
|
default:
|
|
if ((w = wcwidth(c)) <= 0) /* non printing */
|
|
continue;
|
|
if (obuf[col].c_char == '\0') {
|
|
obuf[col].c_char = c;
|
|
for (i = 0; i < w; i++)
|
|
obuf[col + i].c_mode = mode;
|
|
obuf[col].c_width = w;
|
|
for (i = 1; i < w; i++)
|
|
obuf[col + i].c_width = -1;
|
|
} else if (obuf[col].c_char == '_') {
|
|
obuf[col].c_char = c;
|
|
for (i = 0; i < w; i++)
|
|
obuf[col + i].c_mode |= UNDERL|mode;
|
|
obuf[col].c_width = w;
|
|
for (i = 1; i < w; i++)
|
|
obuf[col + i].c_width = -1;
|
|
} else if ((wint_t)obuf[col].c_char == c) {
|
|
for (i = 0; i < w; i++)
|
|
obuf[col + i].c_mode |= BOLD|mode;
|
|
} else {
|
|
w = obuf[col].c_width;
|
|
for (i = 0; i < w; i++)
|
|
obuf[col + i].c_mode = mode;
|
|
}
|
|
col += w;
|
|
if (col > maxcol)
|
|
maxcol = col;
|
|
continue;
|
|
}
|
|
}
|
|
if (ferror(f))
|
|
err(1, NULL);
|
|
if (maxcol)
|
|
flushln();
|
|
}
|
|
|
|
static void
|
|
flushln(void)
|
|
{
|
|
int lastmode;
|
|
int i;
|
|
int hadmodes = 0;
|
|
|
|
lastmode = NORMAL;
|
|
for (i = 0; i < maxcol; i++) {
|
|
if (obuf[i].c_mode != lastmode) {
|
|
hadmodes++;
|
|
setnewmode(obuf[i].c_mode);
|
|
lastmode = obuf[i].c_mode;
|
|
}
|
|
if (obuf[i].c_char == '\0') {
|
|
if (upln)
|
|
PRINT(CURS_RIGHT);
|
|
else
|
|
outc(' ', 1);
|
|
} else
|
|
outc(obuf[i].c_char, obuf[i].c_width);
|
|
if (obuf[i].c_width > 1)
|
|
i += obuf[i].c_width - 1;
|
|
}
|
|
if (lastmode != NORMAL) {
|
|
setnewmode(0);
|
|
}
|
|
if (must_overstrike && hadmodes)
|
|
overstrike();
|
|
putwchar('\n');
|
|
if (iflag && hadmodes)
|
|
iattr();
|
|
(void)fflush(stdout);
|
|
if (upln)
|
|
upln--;
|
|
initbuf();
|
|
}
|
|
|
|
/*
|
|
* For terminals that can overstrike, overstrike underlines and bolds.
|
|
* We don't do anything with halfline ups and downs, or Greek.
|
|
*/
|
|
static void
|
|
overstrike(void)
|
|
{
|
|
int i;
|
|
wchar_t lbuf[256];
|
|
wchar_t *cp = lbuf;
|
|
int hadbold=0;
|
|
|
|
/* Set up overstrike buffer */
|
|
for (i=0; i<maxcol; i++)
|
|
switch (obuf[i].c_mode) {
|
|
case NORMAL:
|
|
default:
|
|
*cp++ = ' ';
|
|
break;
|
|
case UNDERL:
|
|
*cp++ = '_';
|
|
break;
|
|
case BOLD:
|
|
*cp++ = obuf[i].c_char;
|
|
if (obuf[i].c_width > 1)
|
|
i += obuf[i].c_width - 1;
|
|
hadbold=1;
|
|
break;
|
|
}
|
|
putwchar('\r');
|
|
for (*cp=' '; *cp==' '; cp--)
|
|
*cp = 0;
|
|
for (cp=lbuf; *cp; cp++)
|
|
putwchar(*cp);
|
|
if (hadbold) {
|
|
putwchar('\r');
|
|
for (cp=lbuf; *cp; cp++)
|
|
putwchar(*cp=='_' ? ' ' : *cp);
|
|
putwchar('\r');
|
|
for (cp=lbuf; *cp; cp++)
|
|
putwchar(*cp=='_' ? ' ' : *cp);
|
|
}
|
|
}
|
|
|
|
static void
|
|
iattr(void)
|
|
{
|
|
int i;
|
|
wchar_t lbuf[256];
|
|
wchar_t *cp = lbuf;
|
|
|
|
for (i=0; i<maxcol; i++)
|
|
switch (obuf[i].c_mode) {
|
|
case NORMAL: *cp++ = ' '; break;
|
|
case ALTSET: *cp++ = 'g'; break;
|
|
case SUPERSC: *cp++ = '^'; break;
|
|
case SUBSC: *cp++ = 'v'; break;
|
|
case UNDERL: *cp++ = '_'; break;
|
|
case BOLD: *cp++ = '!'; break;
|
|
default: *cp++ = 'X'; break;
|
|
}
|
|
for (*cp=' '; *cp==' '; cp--)
|
|
*cp = 0;
|
|
for (cp=lbuf; *cp; cp++)
|
|
putwchar(*cp);
|
|
putwchar('\n');
|
|
}
|
|
|
|
static void
|
|
initbuf(void)
|
|
{
|
|
|
|
bzero((char *)obuf, buflen * sizeof(*obuf)); /* depends on NORMAL == 0 */
|
|
col = 0;
|
|
maxcol = 0;
|
|
mode &= ALTSET;
|
|
}
|
|
|
|
static void
|
|
fwd(void)
|
|
{
|
|
int oldcol, oldmax;
|
|
|
|
oldcol = col;
|
|
oldmax = maxcol;
|
|
flushln();
|
|
col = oldcol;
|
|
maxcol = oldmax;
|
|
}
|
|
|
|
static void
|
|
reverse(void)
|
|
{
|
|
upln++;
|
|
fwd();
|
|
PRINT(CURS_UP);
|
|
PRINT(CURS_UP);
|
|
upln++;
|
|
}
|
|
|
|
static void
|
|
initcap(void)
|
|
{
|
|
static char tcapbuf[512];
|
|
char *bp = tcapbuf;
|
|
|
|
/* This nonsense attempts to work with both old and new termcap */
|
|
CURS_UP = tgetstr("up", &bp);
|
|
CURS_RIGHT = tgetstr("ri", &bp);
|
|
if (CURS_RIGHT == NULL)
|
|
CURS_RIGHT = tgetstr("nd", &bp);
|
|
CURS_LEFT = tgetstr("le", &bp);
|
|
if (CURS_LEFT == NULL)
|
|
CURS_LEFT = tgetstr("bc", &bp);
|
|
if (CURS_LEFT == NULL && tgetflag("bs"))
|
|
CURS_LEFT = "\b";
|
|
|
|
ENTER_STANDOUT = tgetstr("so", &bp);
|
|
EXIT_STANDOUT = tgetstr("se", &bp);
|
|
ENTER_UNDERLINE = tgetstr("us", &bp);
|
|
EXIT_UNDERLINE = tgetstr("ue", &bp);
|
|
ENTER_DIM = tgetstr("mh", &bp);
|
|
ENTER_BOLD = tgetstr("md", &bp);
|
|
ENTER_REVERSE = tgetstr("mr", &bp);
|
|
EXIT_ATTRIBUTES = tgetstr("me", &bp);
|
|
|
|
if (!ENTER_BOLD && ENTER_REVERSE)
|
|
ENTER_BOLD = ENTER_REVERSE;
|
|
if (!ENTER_BOLD && ENTER_STANDOUT)
|
|
ENTER_BOLD = ENTER_STANDOUT;
|
|
if (!ENTER_UNDERLINE && ENTER_STANDOUT) {
|
|
ENTER_UNDERLINE = ENTER_STANDOUT;
|
|
EXIT_UNDERLINE = EXIT_STANDOUT;
|
|
}
|
|
if (!ENTER_DIM && ENTER_STANDOUT)
|
|
ENTER_DIM = ENTER_STANDOUT;
|
|
if (!ENTER_REVERSE && ENTER_STANDOUT)
|
|
ENTER_REVERSE = ENTER_STANDOUT;
|
|
if (!EXIT_ATTRIBUTES && EXIT_STANDOUT)
|
|
EXIT_ATTRIBUTES = EXIT_STANDOUT;
|
|
|
|
/*
|
|
* Note that we use REVERSE for the alternate character set,
|
|
* not the as/ae capabilities. This is because we are modelling
|
|
* the model 37 teletype (since that's what nroff outputs) and
|
|
* the typical as/ae is more of a graphics set, not the greek
|
|
* letters the 37 has.
|
|
*/
|
|
|
|
UNDER_CHAR = tgetstr("uc", &bp);
|
|
must_use_uc = (UNDER_CHAR && !ENTER_UNDERLINE);
|
|
}
|
|
|
|
static int
|
|
outchar(int c)
|
|
{
|
|
return (putwchar(c) != WEOF ? c : EOF);
|
|
}
|
|
|
|
static int curmode = 0;
|
|
|
|
static void
|
|
outc(wint_t c, int width)
|
|
{
|
|
int i;
|
|
|
|
putwchar(c);
|
|
if (must_use_uc && (curmode&UNDERL)) {
|
|
for (i = 0; i < width; i++)
|
|
PRINT(CURS_LEFT);
|
|
for (i = 0; i < width; i++)
|
|
PRINT(UNDER_CHAR);
|
|
}
|
|
}
|
|
|
|
static void
|
|
setnewmode(int newmode)
|
|
{
|
|
if (!iflag) {
|
|
if (curmode != NORMAL && newmode != NORMAL)
|
|
setnewmode(NORMAL);
|
|
switch (newmode) {
|
|
case NORMAL:
|
|
switch(curmode) {
|
|
case NORMAL:
|
|
break;
|
|
case UNDERL:
|
|
PRINT(EXIT_UNDERLINE);
|
|
break;
|
|
default:
|
|
/* This includes standout */
|
|
PRINT(EXIT_ATTRIBUTES);
|
|
break;
|
|
}
|
|
break;
|
|
case ALTSET:
|
|
PRINT(ENTER_REVERSE);
|
|
break;
|
|
case SUPERSC:
|
|
/*
|
|
* This only works on a few terminals.
|
|
* It should be fixed.
|
|
*/
|
|
PRINT(ENTER_UNDERLINE);
|
|
PRINT(ENTER_DIM);
|
|
break;
|
|
case SUBSC:
|
|
PRINT(ENTER_DIM);
|
|
break;
|
|
case UNDERL:
|
|
PRINT(ENTER_UNDERLINE);
|
|
break;
|
|
case BOLD:
|
|
PRINT(ENTER_BOLD);
|
|
break;
|
|
default:
|
|
/*
|
|
* We should have some provision here for multiple modes
|
|
* on at once. This will have to come later.
|
|
*/
|
|
PRINT(ENTER_STANDOUT);
|
|
break;
|
|
}
|
|
}
|
|
curmode = newmode;
|
|
}
|