673 lines
14 KiB
C
673 lines
14 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
/*
|
|
* modified by Kars de Jong <jongk@cs.utwente.nl>
|
|
* to use terminfo instead of termcap.
|
|
* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
|
|
* added Native Language Support
|
|
* 1999-09-19 Bruno Haible <haible@clisp.cons.org>
|
|
* modified to work correctly in multi-byte locales
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h> /* for getopt(), isatty() */
|
|
#include <string.h> /* for memset(), strcpy() */
|
|
#include <term.h> /* for setupterm() */
|
|
#include <stdlib.h> /* for getenv() */
|
|
#include <limits.h> /* for INT_MAX */
|
|
#include <signal.h> /* for signal() */
|
|
#include <errno.h>
|
|
#include <getopt.h>
|
|
|
|
#include "nls.h"
|
|
#include "xalloc.h"
|
|
#include "widechar.h"
|
|
#include "c.h"
|
|
#include "closestream.h"
|
|
|
|
#ifdef HAVE_WIDECHAR
|
|
/* Output an ASCII character as a wide character */
|
|
static int put1wc(int c)
|
|
{
|
|
if (putwchar(c) == WEOF)
|
|
return EOF;
|
|
else
|
|
return c;
|
|
}
|
|
#define putwp(s) tputs(s, STDOUT_FILENO, put1wc)
|
|
#else
|
|
#define putwp(s) putp(s)
|
|
#endif
|
|
|
|
static void usage(FILE *out);
|
|
static int handle_escape(FILE * f);
|
|
static void filter(FILE *f);
|
|
static void flushln(void);
|
|
static void overstrike(void);
|
|
static void iattr(void);
|
|
static void initbuf(void);
|
|
static void fwd(void);
|
|
static void reverse(void);
|
|
static void initinfo(void);
|
|
static void outc(wint_t c, int width);
|
|
static void setmode(int newmode);
|
|
static void setcol(int newcol);
|
|
static void needcol(int col);
|
|
static void sig_handler(int signo);
|
|
static void print_out(char *line);
|
|
|
|
#define IESC '\033'
|
|
#define SO '\016'
|
|
#define SI '\017'
|
|
#define HFWD '9'
|
|
#define HREV '8'
|
|
#define FREV '7'
|
|
|
|
#define NORMAL 000
|
|
#define ALTSET 001 /* Reverse */
|
|
#define SUPERSC 002 /* Dim */
|
|
#define SUBSC 004 /* Dim | Ul */
|
|
#define UNDERL 010 /* Ul */
|
|
#define BOLD 020 /* Bold */
|
|
|
|
int must_use_uc, must_overstrike;
|
|
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;
|
|
};
|
|
|
|
struct CHAR *obuf;
|
|
int obuflen;
|
|
int col, maxcol;
|
|
int mode;
|
|
int halfpos;
|
|
int upln;
|
|
int iflag;
|
|
|
|
static void __attribute__((__noreturn__))
|
|
usage(FILE *out)
|
|
{
|
|
fprintf(out, _(
|
|
"\nUsage:\n"
|
|
" %s [options] [file...]\n"), program_invocation_short_name);
|
|
|
|
fprintf(out, _(
|
|
"\nOptions:\n"
|
|
" -t, --terminal TERMINAL override the TERM environment variable\n"
|
|
" -i, --indicated underlining is indicated via a separate line\n"
|
|
" -V, --version output version information and exit\n"
|
|
" -h, --help display this help and exit\n\n"));
|
|
|
|
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int c, ret, tflag = 0;
|
|
char *termtype;
|
|
FILE *f;
|
|
|
|
static const struct option longopts[] = {
|
|
{ "terminal", required_argument, 0, 't' },
|
|
{ "indicated", no_argument, 0, 'i' },
|
|
{ "version", no_argument, 0, 'V' },
|
|
{ "help", no_argument, 0, 'h' },
|
|
{ NULL, 0, 0, 0 }
|
|
};
|
|
|
|
setlocale(LC_ALL, "");
|
|
bindtextdomain(PACKAGE, LOCALEDIR);
|
|
textdomain(PACKAGE);
|
|
atexit(close_stdout);
|
|
|
|
signal(SIGINT, sig_handler);
|
|
signal(SIGTERM, sig_handler);
|
|
|
|
termtype = getenv("TERM");
|
|
|
|
/*
|
|
* FIXME: why terminal type is lpr when command begins with c and has
|
|
* no terminal? If this behavior can be explained please insert
|
|
* reference or remove the code. In case this truly is desired command
|
|
* behavior this should be mentioned in manual page.
|
|
*/
|
|
if (termtype == NULL || (argv[0][0] == 'c' && !isatty(STDOUT_FILENO)))
|
|
termtype = "lpr";
|
|
|
|
while ((c = getopt_long(argc, argv, "it:T:Vh", longopts, NULL)) != -1)
|
|
switch (c) {
|
|
|
|
case 't':
|
|
case 'T':
|
|
/* for nroff compatibility */
|
|
termtype = optarg;
|
|
tflag = 1;
|
|
break;
|
|
case 'i':
|
|
iflag = 1;
|
|
break;
|
|
case 'V':
|
|
printf(_("%s from %s\n"), program_invocation_short_name,
|
|
PACKAGE_STRING);
|
|
return EXIT_SUCCESS;
|
|
case 'h':
|
|
usage(stdout);
|
|
default:
|
|
usage(stderr);
|
|
}
|
|
setupterm(termtype, STDOUT_FILENO, &ret);
|
|
switch (ret) {
|
|
|
|
case 1:
|
|
break;
|
|
|
|
default:
|
|
warnx(_("trouble reading terminfo"));
|
|
/* fall through to ... */
|
|
|
|
case 0:
|
|
if (tflag)
|
|
warnx(_("terminal `%s' is not known, defaulting to `dumb'"),
|
|
termtype);
|
|
setupterm("dumb", STDOUT_FILENO, (int *)0);
|
|
break;
|
|
}
|
|
initinfo();
|
|
if ((tigetflag("os") && ENTER_BOLD==NULL ) ||
|
|
(tigetflag("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)
|
|
err(EXIT_FAILURE, _("cannot open %s"),
|
|
argv[optind]);
|
|
filter(f);
|
|
fclose(f);
|
|
}
|
|
free(obuf);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
static int handle_escape(FILE * f)
|
|
{
|
|
wint_t c;
|
|
|
|
switch (c = getwc(f)) {
|
|
case HREV:
|
|
if (halfpos == 0) {
|
|
mode |= SUPERSC;
|
|
halfpos--;
|
|
} else if (halfpos > 0) {
|
|
mode &= ~SUBSC;
|
|
halfpos--;
|
|
} else {
|
|
halfpos = 0;
|
|
reverse();
|
|
}
|
|
return 0;
|
|
case HFWD:
|
|
if (halfpos == 0) {
|
|
mode |= SUBSC;
|
|
halfpos++;
|
|
} else if (halfpos < 0) {
|
|
mode &= ~SUPERSC;
|
|
halfpos++;
|
|
} else {
|
|
halfpos = 0;
|
|
fwd();
|
|
}
|
|
return 0;
|
|
case FREV:
|
|
reverse();
|
|
return 0;
|
|
default:
|
|
/* unknown escape */
|
|
ungetwc(c, f);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static void filter(FILE *f)
|
|
{
|
|
wint_t c;
|
|
int i, w;
|
|
|
|
while ((c = getwc(f)) != WEOF)
|
|
switch (c) {
|
|
|
|
case '\b':
|
|
setcol(col - 1);
|
|
continue;
|
|
|
|
case '\t':
|
|
setcol((col+8) & ~07);
|
|
continue;
|
|
|
|
case '\r':
|
|
setcol(0);
|
|
continue;
|
|
|
|
case SO:
|
|
mode |= ALTSET;
|
|
continue;
|
|
|
|
case SI:
|
|
mode &= ~ALTSET;
|
|
continue;
|
|
|
|
case IESC:
|
|
if(handle_escape(f)) {
|
|
c = getwc(f);
|
|
errx(EXIT_FAILURE,
|
|
_("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;
|
|
setcol(col);
|
|
continue;
|
|
}
|
|
obuf[col].c_char = '_';
|
|
obuf[col].c_width = 1;
|
|
/* fall through */
|
|
case ' ':
|
|
setcol(col + 1);
|
|
continue;
|
|
|
|
case '\n':
|
|
flushln();
|
|
continue;
|
|
|
|
case '\f':
|
|
flushln();
|
|
putwchar('\f');
|
|
continue;
|
|
|
|
default:
|
|
if (!iswprint(c))
|
|
/* non printable */
|
|
continue;
|
|
w = wcwidth(c);
|
|
needcol(col + w);
|
|
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;
|
|
}
|
|
setcol(col + w);
|
|
continue;
|
|
}
|
|
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++;
|
|
setmode(obuf[i].c_mode);
|
|
lastmode = obuf[i].c_mode;
|
|
}
|
|
if (obuf[i].c_char == '\0') {
|
|
if (upln) {
|
|
print_out(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) {
|
|
setmode(0);
|
|
}
|
|
if (must_overstrike && hadmodes)
|
|
overstrike();
|
|
putwchar('\n');
|
|
if (iflag && hadmodes)
|
|
iattr();
|
|
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)
|
|
{
|
|
register int i;
|
|
#ifdef __GNUC__
|
|
register wchar_t *lbuf = __builtin_alloca((maxcol + 1) * sizeof(wchar_t));
|
|
#else
|
|
wchar_t lbuf[BUFSIZ];
|
|
#endif
|
|
register 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)
|
|
{
|
|
register int i;
|
|
#ifdef __GNUC__
|
|
register char *lbuf = __builtin_alloca((maxcol+1)*sizeof(char));
|
|
#else
|
|
char lbuf[BUFSIZ];
|
|
#endif
|
|
register char *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)
|
|
{
|
|
if (obuf == NULL) {
|
|
/* First time. */
|
|
obuflen = BUFSIZ;
|
|
obuf = xmalloc(sizeof(struct CHAR) * obuflen);
|
|
}
|
|
|
|
/* assumes NORMAL == 0 */
|
|
memset(obuf, 0, sizeof(struct CHAR) * obuflen);
|
|
setcol(0);
|
|
maxcol = 0;
|
|
mode &= ALTSET;
|
|
}
|
|
|
|
static void fwd(void)
|
|
{
|
|
int oldcol, oldmax;
|
|
|
|
oldcol = col;
|
|
oldmax = maxcol;
|
|
flushln();
|
|
setcol(oldcol);
|
|
maxcol = oldmax;
|
|
}
|
|
|
|
static void reverse(void)
|
|
{
|
|
upln++;
|
|
fwd();
|
|
print_out(CURS_UP);
|
|
print_out(CURS_UP);
|
|
upln++;
|
|
}
|
|
|
|
static void initinfo(void)
|
|
{
|
|
CURS_UP = tigetstr("cuu1");
|
|
CURS_RIGHT = tigetstr("cuf1");
|
|
CURS_LEFT = tigetstr("cub1");
|
|
if (CURS_LEFT == NULL)
|
|
CURS_LEFT = "\b";
|
|
|
|
ENTER_STANDOUT = tigetstr("smso");
|
|
EXIT_STANDOUT = tigetstr("rmso");
|
|
ENTER_UNDERLINE = tigetstr("smul");
|
|
EXIT_UNDERLINE = tigetstr("rmul");
|
|
ENTER_DIM = tigetstr("dim");
|
|
ENTER_BOLD = tigetstr("bold");
|
|
ENTER_REVERSE = tigetstr("rev");
|
|
EXIT_ATTRIBUTES = tigetstr("sgr0");
|
|
|
|
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 = tigetstr("uc");
|
|
must_use_uc = (UNDER_CHAR && !ENTER_UNDERLINE);
|
|
}
|
|
|
|
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_out(CURS_LEFT);
|
|
for (i = 0; i < width; i++)
|
|
print_out(UNDER_CHAR);
|
|
}
|
|
}
|
|
|
|
static void setmode(int newmode)
|
|
{
|
|
if (!iflag) {
|
|
if (curmode != NORMAL && newmode != NORMAL)
|
|
setmode(NORMAL);
|
|
switch (newmode) {
|
|
case NORMAL:
|
|
switch (curmode) {
|
|
case NORMAL:
|
|
break;
|
|
case UNDERL:
|
|
print_out(EXIT_UNDERLINE);
|
|
break;
|
|
default:
|
|
/* This includes standout */
|
|
print_out(EXIT_ATTRIBUTES);
|
|
break;
|
|
}
|
|
break;
|
|
case ALTSET:
|
|
print_out(ENTER_REVERSE);
|
|
break;
|
|
case SUPERSC:
|
|
/*
|
|
* This only works on a few terminals.
|
|
* It should be fixed.
|
|
*/
|
|
print_out(ENTER_UNDERLINE);
|
|
print_out(ENTER_DIM);
|
|
break;
|
|
case SUBSC:
|
|
print_out(ENTER_DIM);
|
|
break;
|
|
case UNDERL:
|
|
print_out(ENTER_UNDERLINE);
|
|
break;
|
|
case BOLD:
|
|
print_out(ENTER_BOLD);
|
|
break;
|
|
default:
|
|
/*
|
|
* We should have some provision here for multiple modes
|
|
* on at once. This will have to come later.
|
|
*/
|
|
print_out(ENTER_STANDOUT);
|
|
break;
|
|
}
|
|
}
|
|
curmode = newmode;
|
|
}
|
|
|
|
static void setcol(int newcol) {
|
|
col = newcol;
|
|
|
|
if (col < 0)
|
|
col = 0;
|
|
else if (col > maxcol)
|
|
needcol(col);
|
|
}
|
|
|
|
static void needcol(int col) {
|
|
maxcol = col;
|
|
|
|
/* If col >= obuflen, expand obuf until obuflen > col. */
|
|
while (col >= obuflen) {
|
|
/* Paranoid check for obuflen == INT_MAX. */
|
|
if (obuflen == INT_MAX)
|
|
errx(EXIT_FAILURE, _("Input line too long."));
|
|
|
|
/* Similar paranoia: double only up to INT_MAX. */
|
|
if (obuflen < (INT_MAX / 2))
|
|
obuflen *= 2;
|
|
else
|
|
obuflen = INT_MAX;
|
|
|
|
/* Now we can try to expand obuf. */
|
|
obuf = xrealloc(obuf, sizeof(struct CHAR) * obuflen);
|
|
}
|
|
}
|
|
|
|
static void sig_handler(int signo __attribute__ ((__unused__)))
|
|
{
|
|
_exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
static void print_out(char *line)
|
|
{
|
|
if (line == NULL)
|
|
return;
|
|
|
|
putwp(line);
|
|
}
|