Adding upstream version 2.36.1.upstream/2.36.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 653 insertions, 0 deletions

diff --git a/text-utils/ul.c b/text-utils/ul.c
new file mode 100644
index 0000000..39b69a5
--- /dev/null
+++ b/text-utils/ul.c
@@ -0,0 +1,653 @@
+/*
+ * 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 Miśkiewicz <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 <stdlib.h>		/* for getenv() */
+#include <limits.h>		/* for INT_MAX */
+#include <signal.h>		/* for signal() */
+#include <errno.h>
+#include <getopt.h>
+
+#if defined(HAVE_NCURSESW_TERM_H)
+# include <ncursesw/term.h>
+#elif defined(HAVE_NCURSES_TERM_H)
+# include <ncurses/term.h>
+#elif defined(HAVE_TERM_H)
+# include <term.h>
+#endif
+
+#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;
+
+	return c;
+}
+#define putwp(s) tputs(s, STDOUT_FILENO, put1wc)
+#else
+#define putwp(s) putp(s)
+#endif
+
+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 xsetmode(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 */
+
+static int	must_use_uc, must_overstrike;
+static 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;
+};
+
+static struct	CHAR	*obuf;
+static int	obuflen;
+static int	col, maxcol;
+static int	mode;
+static int	halfpos;
+static int	upln;
+static int	iflag;
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+	FILE *out = stdout;
+	fputs(USAGE_HEADER, out);
+	fprintf(out, _(" %s [options] [<file> ...]\n"), program_invocation_short_name);
+
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_("Do underlining.\n"), out);
+
+	fputs(USAGE_OPTIONS, out);
+	fputs(_(" -t, -T, --terminal TERMINAL  override the TERM environment variable\n"), out);
+	fputs(_(" -i, --indicated              underlining is indicated via a separate line\n"), out);
+	fputs(USAGE_SEPARATOR, out);
+	printf(USAGE_HELP_OPTIONS(30));
+
+	printf(USAGE_MAN_TAIL("ul(1)"));
+
+	exit(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,	NULL, 't' },
+		{ "indicated",	no_argument,		NULL, 'i' },
+		{ "version",	no_argument,		NULL, 'V' },
+		{ "help",	no_argument,		NULL, 'h' },
+		{ NULL, 0, NULL, 0 }
+	};
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+	close_stdout_atexit();
+
+	signal(SIGINT, sig_handler);
+	signal(SIGTERM, sig_handler);
+
+	termtype = getenv("TERM");
+
+	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':
+			print_version(EXIT_SUCCESS);
+		case 'h':
+			usage();
+		default:
+			errtryhelp(EXIT_FAILURE);
+		}
+	setupterm(termtype, STDOUT_FILENO, &ret);
+	switch (ret) {
+
+	case 1:
+		break;
+
+	default:
+		warnx(_("trouble reading terminfo"));
+		/* fallthrough */
+
+	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;
+			/* fallthrough */
+		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++;
+			xsetmode(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) {
+		xsetmode(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;
+	register wchar_t *lbuf = xcalloc(maxcol + 1, sizeof(wchar_t));
+	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;
+	fputws(lbuf, stdout);
+	if (hadbold) {
+		putwchar('\r');
+		for (cp = lbuf; *cp; cp++)
+			putwchar(*cp == '_' ? ' ' : *cp);
+		putwchar('\r');
+		for (cp = lbuf; *cp; cp++)
+			putwchar(*cp == '_' ? ' ' : *cp);
+	}
+	free(lbuf);
+}
+
+static void iattr(void)
+{
+	register int i;
+	register wchar_t *lbuf = xcalloc(maxcol + 1, sizeof(wchar_t));
+	register 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;
+	fputws(lbuf, stdout);
+	putwchar('\n');
+	free(lbuf);
+}
+
+static void initbuf(void)
+{
+	if (obuf == NULL) {
+		/* First time. */
+		obuflen = BUFSIZ;
+		obuf = xcalloc(obuflen, sizeof(struct CHAR));
+	} else
+		/* assumes NORMAL == 0 */
+		memset(obuf, 0, sizeof(struct CHAR) * maxcol);
+
+	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 modeling
+	 * 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 xsetmode(int newmode)
+{
+	if (!iflag) {
+		if (curmode != NORMAL && newmode != NORMAL)
+			xsetmode(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 acol) {
+	maxcol = acol;
+
+	/* If col >= obuflen, expand obuf until obuflen > col. */
+	while (acol >= 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);
+}