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-rw-r--r--text-utils/ul.c646
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diff --git a/text-utils/ul.c b/text-utils/ul.c
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--- /dev/null
+++ b/text-utils/ul.c
@@ -0,0 +1,646 @@
+/*
+ * 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"
+
+#define ESC '\033'
+#define SO '\016'
+#define SI '\017'
+#define HFWD '9'
+#define HREV '8'
+#define FREV '7'
+
+enum {
+ NORMAL_CHARSET = 0, /* Must be zero, see initbuf() */
+ ALTERNATIVE_CHARSET = 1 << 0, /* Reverse */
+ SUPERSCRIPT = 1 << 1, /* Dim */
+ SUBSCRIPT = 1 << 2, /* Dim | Ul */
+ UNDERLINE = 1 << 3, /* Ul */
+ BOLD = 1 << 4, /* Bold */
+};
+
+struct term_caps {
+ char *curs_up;
+ char *curs_right;
+ char *curs_left;
+ char *enter_standout;
+ char *exit_standout;
+ char *enter_underline;
+ char *exit_underline;
+ char *enter_dim;
+ char *enter_bold;
+ char *enter_reverse;
+ char *under_char;
+ char *exit_attributes;
+};
+
+struct ul_char {
+ wchar_t c_char;
+ int c_width;
+ char c_mode;
+};
+
+struct ul_ctl {
+ size_t column;
+ size_t max_column;
+ int half_position;
+ int up_line;
+ int mode;
+ int current_mode;
+ size_t buflen;
+ struct ul_char *buf;
+ unsigned int
+ indicated_opt:1,
+ must_use_uc:1,
+ must_overstrike:1;
+};
+
+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);
+ printf(USAGE_HELP_OPTIONS(30));
+
+ printf(USAGE_MAN_TAIL("ul(1)"));
+
+ exit(EXIT_SUCCESS);
+}
+
+static void need_column(struct ul_ctl *ctl, size_t new_max)
+{
+ ctl->max_column = new_max;
+
+ while (new_max >= ctl->buflen) {
+ ctl->buflen *= 2;
+ ctl->buf = xrealloc(ctl->buf, sizeof(struct ul_char) * ctl->buflen);
+ }
+}
+
+static void set_column(struct ul_ctl *ctl, size_t column)
+{
+ ctl->column = column;
+
+ if (ctl->max_column < ctl->column)
+ need_column(ctl, ctl->column);
+}
+
+static void init_buffer(struct ul_ctl *ctl)
+{
+ if (ctl->buf == NULL) {
+ /* First time. */
+ ctl->buflen = BUFSIZ;
+ ctl->buf = xcalloc(ctl->buflen, sizeof(struct ul_char));
+ } else
+ /* assumes NORMAL_CHARSET == 0 */
+ memset(ctl->buf, 0, sizeof(struct ul_char) * ctl->max_column);
+
+ set_column(ctl, 0);
+ ctl->max_column = 0;
+ ctl->mode &= ALTERNATIVE_CHARSET;
+}
+
+static void init_term_caps(struct ul_ctl *ctl, struct term_caps *const tcs)
+{
+ tcs->curs_up = tigetstr("cuu1");
+ tcs->curs_right = tigetstr("cuf1");
+ tcs->curs_left = tigetstr("cub1");
+ if (tcs->curs_left == NULL)
+ tcs->curs_left = "\b";
+
+ tcs->enter_standout = tigetstr("smso");
+ tcs->exit_standout = tigetstr("rmso");
+ tcs->enter_underline = tigetstr("smul");
+ tcs->exit_underline = tigetstr("rmul");
+ tcs->enter_dim = tigetstr("dim");
+ tcs->enter_bold = tigetstr("bold");
+ tcs->enter_reverse = tigetstr("rev");
+ tcs->exit_attributes = tigetstr("sgr0");
+
+ if (!tcs->enter_bold && tcs->enter_reverse)
+ tcs->enter_bold = tcs->enter_reverse;
+
+ if (!tcs->enter_bold && tcs->enter_standout)
+ tcs->enter_bold = tcs->enter_standout;
+
+ if (!tcs->enter_underline && tcs->enter_standout) {
+ tcs->enter_underline = tcs->enter_standout;
+ tcs->exit_underline = tcs->exit_standout;
+ }
+
+ if (!tcs->enter_dim && tcs->enter_standout)
+ tcs->enter_dim = tcs->enter_standout;
+
+ if (!tcs->enter_reverse && tcs->enter_standout)
+ tcs->enter_reverse = tcs->enter_standout;
+
+ if (!tcs->exit_attributes && tcs->exit_standout)
+ tcs->exit_attributes = tcs->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.
+ */
+ tcs->under_char = tigetstr("uc");
+ ctl->must_use_uc = (tcs->under_char && !tcs->enter_underline);
+
+ if ((tigetflag("os") && tcs->enter_bold == NULL) ||
+ (tigetflag("ul") && tcs->enter_underline == NULL
+ && tcs->under_char == NULL))
+ ctl->must_overstrike = 1;
+}
+
+static void sig_handler(int signo __attribute__((__unused__)))
+{
+ _exit(EXIT_SUCCESS);
+}
+
+static int ul_putwchar(int c)
+{
+ if (putwchar(c) == WEOF)
+ return EOF;
+ return c;
+}
+
+static void print_line(char *line)
+{
+ if (line == NULL)
+ return;
+ tputs(line, STDOUT_FILENO, ul_putwchar);
+}
+
+static void ul_setmode(struct ul_ctl *ctl, struct term_caps const *const tcs,
+ int new_mode)
+{
+ if (!ctl->indicated_opt) {
+ if (ctl->current_mode != NORMAL_CHARSET && new_mode != NORMAL_CHARSET)
+ ul_setmode(ctl, tcs, NORMAL_CHARSET);
+
+ switch (new_mode) {
+ case NORMAL_CHARSET:
+ switch (ctl->current_mode) {
+ case NORMAL_CHARSET:
+ break;
+ case UNDERLINE:
+ print_line(tcs->exit_underline);
+ break;
+ default:
+ /* This includes standout */
+ print_line(tcs->exit_attributes);
+ break;
+ }
+ break;
+ case ALTERNATIVE_CHARSET:
+ print_line(tcs->enter_reverse);
+ break;
+ case SUPERSCRIPT:
+ /*
+ * This only works on a few terminals.
+ * It should be fixed.
+ */
+ print_line(tcs->enter_underline);
+ print_line(tcs->enter_dim);
+ break;
+ case SUBSCRIPT:
+ print_line(tcs->enter_dim);
+ break;
+ case UNDERLINE:
+ print_line(tcs->enter_underline);
+ break;
+ case BOLD:
+ print_line(tcs->enter_bold);
+ break;
+ default:
+ /*
+ * We should have some provision here for multiple modes
+ * on at once. This will have to come later.
+ */
+ print_line(tcs->enter_standout);
+ break;
+ }
+ }
+ ctl->current_mode = new_mode;
+}
+
+static void indicate_attribute(struct ul_ctl *ctl)
+{
+ size_t i;
+ wchar_t *buf = xcalloc(ctl->max_column + 1, sizeof(wchar_t));
+ wchar_t *p = buf;
+
+ for (i = 0; i < ctl->max_column; i++) {
+ switch (ctl->buf[i].c_mode) {
+ case NORMAL_CHARSET: *p++ = ' '; break;
+ case ALTERNATIVE_CHARSET: *p++ = 'g'; break;
+ case SUPERSCRIPT: *p++ = '^'; break;
+ case SUBSCRIPT: *p++ = 'v'; break;
+ case UNDERLINE: *p++ = '_'; break;
+ case BOLD: *p++ = '!'; break;
+ default: *p++ = 'X'; break;
+ }
+ }
+
+ for (*p = ' '; *p == ' '; p--)
+ *p = 0;
+
+ fputws(buf, stdout);
+ putwchar('\n');
+ free(buf);
+}
+
+static void output_char(struct ul_ctl *ctl, struct term_caps const *const tcs,
+ wint_t c, int width)
+{
+ int i;
+
+ putwchar(c);
+ if (ctl->must_use_uc && (ctl->current_mode & UNDERLINE)) {
+ for (i = 0; i < width; i++)
+ print_line(tcs->curs_left);
+ for (i = 0; i < width; i++)
+ print_line(tcs->under_char);
+ }
+}
+
+/*
+ * For terminals that can overstrike, overstrike underlines and bolds.
+ * We don't do anything with halfline ups and downs, or Greek.
+ */
+static void overstrike(struct ul_ctl *ctl)
+{
+ size_t i;
+ wchar_t *buf = xcalloc(ctl->max_column + 1, sizeof(wchar_t));
+ wchar_t *p = buf;
+ int had_bold = 0;
+
+ /* Set up overstrike buffer */
+ for (i = 0; i < ctl->max_column; i++) {
+ switch (ctl->buf[i].c_mode) {
+ case NORMAL_CHARSET:
+ default:
+ *p++ = ' ';
+ break;
+ case UNDERLINE:
+ *p++ = '_';
+ break;
+ case BOLD:
+ *p++ = ctl->buf[i].c_char;
+ if (1 < ctl->buf[i].c_width)
+ i += ctl->buf[i].c_width - 1;
+ had_bold = 1;
+ break;
+ }
+ }
+
+ putwchar('\r');
+ for (*p = ' '; *p == ' '; p--)
+ *p = 0;
+ fputws(buf, stdout);
+
+ if (had_bold) {
+ putwchar('\r');
+ for (p = buf; *p; p++)
+ putwchar(*p == '_' ? ' ' : *p);
+ putwchar('\r');
+ for (p = buf; *p; p++)
+ putwchar(*p == '_' ? ' ' : *p);
+ }
+ free(buf);
+}
+
+static void flush_line(struct ul_ctl *ctl, struct term_caps const *const tcs)
+{
+ int last_mode;
+ size_t i;
+ int had_mode = 0;
+
+ last_mode = NORMAL_CHARSET;
+ for (i = 0; i < ctl->max_column; i++) {
+ if (ctl->buf[i].c_mode != last_mode) {
+ had_mode = 1;
+ ul_setmode(ctl, tcs, ctl->buf[i].c_mode);
+ last_mode = ctl->buf[i].c_mode;
+ }
+ if (ctl->buf[i].c_char == '\0') {
+ if (ctl->up_line)
+ print_line(tcs->curs_right);
+ else
+ output_char(ctl, tcs, ' ', 1);
+ } else
+ output_char(ctl, tcs, ctl->buf[i].c_char, ctl->buf[i].c_width);
+ if (1 < ctl->buf[i].c_width)
+ i += ctl->buf[i].c_width - 1;
+ }
+ if (last_mode != NORMAL_CHARSET)
+ ul_setmode(ctl, tcs, NORMAL_CHARSET);
+ if (ctl->must_overstrike && had_mode)
+ overstrike(ctl);
+ putwchar('\n');
+ if (ctl->indicated_opt && had_mode)
+ indicate_attribute(ctl);
+ fflush(stdout);
+ if (ctl->up_line)
+ ctl->up_line--;
+ init_buffer(ctl);
+}
+
+static void forward(struct ul_ctl *ctl, struct term_caps const *const tcs)
+{
+ int old_column, old_maximum;
+
+ old_column = ctl->column;
+ old_maximum = ctl->max_column;
+ flush_line(ctl, tcs);
+ set_column(ctl, old_column);
+ ctl->max_column = old_maximum;
+}
+
+static void reverse(struct ul_ctl *ctl, struct term_caps const *const tcs)
+{
+ ctl->up_line++;
+ forward(ctl, tcs);
+ print_line(tcs->curs_up);
+ print_line(tcs->curs_up);
+ ctl->up_line++;
+}
+
+static int handle_escape(struct ul_ctl *ctl, struct term_caps const *const tcs, FILE *f)
+{
+ wint_t c;
+
+ switch (c = getwc(f)) {
+ case HREV:
+ if (0 < ctl->half_position) {
+ ctl->mode &= ~SUBSCRIPT;
+ ctl->half_position--;
+ } else if (ctl->half_position == 0) {
+ ctl->mode |= SUPERSCRIPT;
+ ctl->half_position--;
+ } else {
+ ctl->half_position = 0;
+ reverse(ctl, tcs);
+ }
+ return 0;
+ case HFWD:
+ if (ctl->half_position < 0) {
+ ctl->mode &= ~SUPERSCRIPT;
+ ctl->half_position++;
+ } else if (ctl->half_position == 0) {
+ ctl->mode |= SUBSCRIPT;
+ ctl->half_position++;
+ } else {
+ ctl->half_position = 0;
+ forward(ctl, tcs);
+ }
+ return 0;
+ case FREV:
+ reverse(ctl, tcs);
+ return 0;
+ default:
+ /* unknown escape */
+ ungetwc(c, f);
+ return 1;
+ }
+}
+
+static void filter(struct ul_ctl *ctl, struct term_caps const *const tcs, FILE *f)
+{
+ wint_t c;
+ int i, width;
+
+ while ((c = getwc(f)) != WEOF) {
+ switch (c) {
+ case '\b':
+ set_column(ctl, ctl->column && 0 < ctl->column ? ctl->column - 1 : 0);
+ continue;
+ case '\t':
+ set_column(ctl, (ctl->column + 8) & ~07);
+ continue;
+ case '\r':
+ set_column(ctl, 0);
+ continue;
+ case SO:
+ ctl->mode |= ALTERNATIVE_CHARSET;
+ continue;
+ case SI:
+ ctl->mode &= ~ALTERNATIVE_CHARSET;
+ continue;
+ case ESC:
+ if (handle_escape(ctl, tcs, f)) {
+ c = getwc(f);
+ errx(EXIT_FAILURE,
+ _("unknown escape sequence in input: %o, %o"), ESC, c);
+ }
+ continue;
+ case '_':
+ if (ctl->buf[ctl->column].c_char || ctl->buf[ctl->column].c_width < 0) {
+ while (ctl->buf[ctl->column].c_width < 0 && 0 < ctl->column)
+ ctl->column--;
+ width = ctl->buf[ctl->column].c_width;
+ for (i = 0; i < width; i++)
+ ctl->buf[ctl->column++].c_mode |= UNDERLINE | ctl->mode;
+ set_column(ctl, 0 < ctl->column ? ctl->column : 0);
+ continue;
+ }
+ ctl->buf[ctl->column].c_char = '_';
+ ctl->buf[ctl->column].c_width = 1;
+ /* fallthrough */
+ case ' ':
+ set_column(ctl, ctl->column + 1);
+ continue;
+ case '\n':
+ flush_line(ctl, tcs);
+ continue;
+ case '\f':
+ flush_line(ctl, tcs);
+ putwchar('\f');
+ continue;
+ default:
+ if (!iswprint(c))
+ /* non printable */
+ continue;
+ width = wcwidth(c);
+ need_column(ctl, ctl->column + width);
+ if (ctl->buf[ctl->column].c_char == '\0') {
+ ctl->buf[ctl->column].c_char = c;
+ for (i = 0; i < width; i++)
+ ctl->buf[ctl->column + i].c_mode = ctl->mode;
+ ctl->buf[ctl->column].c_width = width;
+ for (i = 1; i < width; i++)
+ ctl->buf[ctl->column + i].c_width = -1;
+ } else if (ctl->buf[ctl->column].c_char == '_') {
+ ctl->buf[ctl->column].c_char = c;
+ for (i = 0; i < width; i++)
+ ctl->buf[ctl->column + i].c_mode |= UNDERLINE | ctl->mode;
+ ctl->buf[ctl->column].c_width = width;
+ for (i = 1; i < width; i++)
+ ctl->buf[ctl->column + i].c_width = -1;
+ } else if ((wint_t) ctl->buf[ctl->column].c_char == c) {
+ for (i = 0; i < width; i++)
+ ctl->buf[ctl->column + i].c_mode |= BOLD | ctl->mode;
+ } else {
+ width = ctl->buf[ctl->column].c_width;
+ for (i = 0; i < width; i++)
+ ctl->buf[ctl->column + i].c_mode = ctl->mode;
+ }
+ set_column(ctl, ctl->column + width);
+ continue;
+ }
+ }
+ if (ctl->max_column)
+ flush_line(ctl, tcs);
+}
+
+int main(int argc, char **argv)
+{
+ int c, ret, opt_terminal = 0;
+ char *termtype;
+ struct term_caps tcs = { 0 };
+ struct ul_ctl ctl = { .current_mode = NORMAL_CHARSET };
+ 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;
+ opt_terminal = 1;
+ break;
+ case 'i':
+ ctl.indicated_opt = 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 (opt_terminal)
+ warnx(_("terminal `%s' is not known, defaulting to `dumb'"),
+ termtype);
+ setupterm("dumb", STDOUT_FILENO, (int *)0);
+ break;
+ }
+
+ init_term_caps(&ctl, &tcs);
+ init_buffer(&ctl);
+
+ if (optind == argc)
+ filter(&ctl, &tcs, stdin);
+ else {
+ for (; optind < argc; optind++) {
+ f = fopen(argv[optind], "r");
+ if (!f)
+ err(EXIT_FAILURE, _("cannot open %s"), argv[optind]);
+ filter(&ctl, &tcs, f);
+ fclose(f);
+ }
+ }
+
+ free(ctl.buf);
+ del_curterm(cur_term);
+ return EXIT_SUCCESS;
+}
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