8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
589 lines
12 KiB
C
589 lines
12 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)ul.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <err.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termcap.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <wctype.h>
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#define IESC '\033'
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#define SO '\016'
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#define SI '\017'
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#define HFWD '9'
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#define HREV '8'
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#define FREV '7'
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#define MAXBUF 512
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#define NORMAL 000
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#define ALTSET 001 /* Reverse */
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#define SUPERSC 002 /* Dim */
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#define SUBSC 004 /* Dim | Ul */
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#define UNDERL 010 /* Ul */
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#define BOLD 020 /* Bold */
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static int must_use_uc, must_overstrike;
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static const char
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*CURS_UP, *CURS_RIGHT, *CURS_LEFT,
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*ENTER_STANDOUT, *EXIT_STANDOUT, *ENTER_UNDERLINE, *EXIT_UNDERLINE,
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*ENTER_DIM, *ENTER_BOLD, *ENTER_REVERSE, *UNDER_CHAR, *EXIT_ATTRIBUTES;
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struct CHAR {
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char c_mode;
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wchar_t c_char;
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int c_width; /* width or -1 if multi-column char. filler */
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} ;
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static struct CHAR sobuf[MAXBUF]; /* static output buffer */
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static struct CHAR *obuf = sobuf;
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static int buflen = MAXBUF;
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static int col, maxcol;
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static int mode;
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static int halfpos;
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static int upln;
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static int iflag;
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static void usage(void);
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static void setnewmode(int);
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static void initcap(void);
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static void reverse(void);
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static int outchar(int);
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static void fwd(void);
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static void initbuf(void);
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static void iattr(void);
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static void overstrike(void);
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static void flushln(void);
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static void filter(FILE *);
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static void outc(wint_t, int);
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#define PRINT(s) if (s == NULL) /* void */; else tputs(s, 1, outchar)
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int
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main(int argc, char **argv)
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{
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int c;
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const char *termtype;
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FILE *f;
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char termcap[1024];
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setlocale(LC_ALL, "");
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termtype = getenv("TERM");
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if (termtype == NULL || (argv[0][0] == 'c' && !isatty(1)))
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termtype = "lpr";
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while ((c = getopt(argc, argv, "it:T:")) != -1)
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switch (c) {
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case 't':
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case 'T': /* for nroff compatibility */
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termtype = optarg;
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break;
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case 'i':
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iflag = 1;
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break;
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default:
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usage();
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}
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switch (tgetent(termcap, termtype)) {
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case 1:
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break;
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default:
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warnx("trouble reading termcap");
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/* FALLTHROUGH */
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case 0:
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/* No such terminal type - assume dumb */
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(void)strcpy(termcap, "dumb:os:col#80:cr=^M:sf=^J:am:");
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break;
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}
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initcap();
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if ((tgetflag("os") && ENTER_BOLD == NULL ) ||
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(tgetflag("ul") && ENTER_UNDERLINE == NULL && UNDER_CHAR == NULL))
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must_overstrike = 1;
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initbuf();
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if (optind == argc)
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filter(stdin);
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else for (; optind<argc; optind++) {
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f = fopen(argv[optind],"r");
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if (f == NULL)
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err(1, "%s", argv[optind]);
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else
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filter(f);
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}
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if (obuf != sobuf) {
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free(obuf);
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}
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exit(0);
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: ul [-i] [-t terminal] [file ...]\n");
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exit(1);
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}
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static void
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filter(FILE *f)
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{
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wint_t c;
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int i, w;
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int copy;
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copy = 0;
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while ((c = getwc(f)) != WEOF) {
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if (col == buflen) {
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if (obuf == sobuf) {
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obuf = NULL;
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copy = 1;
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}
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obuf = realloc(obuf, sizeof(*obuf) * 2 * buflen);
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if (obuf == NULL) {
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obuf = sobuf;
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break;
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} else if (copy) {
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memcpy(obuf, sobuf, sizeof(*obuf) * buflen);
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copy = 0;
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}
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bzero((char *)(obuf + buflen), sizeof(*obuf) * buflen);
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buflen *= 2;
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}
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switch(c) {
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case '\b':
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if (col > 0)
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col--;
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continue;
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case '\t':
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col = (col+8) & ~07;
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if (col > maxcol)
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maxcol = col;
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continue;
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case '\r':
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col = 0;
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continue;
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case SO:
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mode |= ALTSET;
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continue;
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case SI:
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mode &= ~ALTSET;
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continue;
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case IESC:
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switch (c = getwc(f)) {
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case HREV:
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if (halfpos == 0) {
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mode |= SUPERSC;
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halfpos--;
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} else if (halfpos > 0) {
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mode &= ~SUBSC;
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halfpos--;
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} else {
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halfpos = 0;
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reverse();
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}
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continue;
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case HFWD:
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if (halfpos == 0) {
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mode |= SUBSC;
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halfpos++;
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} else if (halfpos < 0) {
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mode &= ~SUPERSC;
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halfpos++;
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} else {
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halfpos = 0;
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fwd();
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}
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continue;
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case FREV:
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reverse();
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continue;
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default:
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errx(1, "unknown escape sequence in input: %o, %o", IESC, c);
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}
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continue;
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case '_':
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if (obuf[col].c_char || obuf[col].c_width < 0) {
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while (col > 0 && obuf[col].c_width < 0)
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col--;
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w = obuf[col].c_width;
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for (i = 0; i < w; i++)
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obuf[col++].c_mode |= UNDERL | mode;
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if (col > maxcol)
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maxcol = col;
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continue;
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}
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obuf[col].c_char = '_';
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obuf[col].c_width = 1;
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/* FALLTHROUGH */
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case ' ':
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col++;
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if (col > maxcol)
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maxcol = col;
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continue;
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case '\n':
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flushln();
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continue;
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case '\f':
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flushln();
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putwchar('\f');
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continue;
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default:
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if ((w = wcwidth(c)) <= 0) /* non printing */
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continue;
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if (obuf[col].c_char == '\0') {
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obuf[col].c_char = c;
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode = mode;
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obuf[col].c_width = w;
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for (i = 1; i < w; i++)
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obuf[col + i].c_width = -1;
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} else if (obuf[col].c_char == '_') {
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obuf[col].c_char = c;
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode |= UNDERL|mode;
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obuf[col].c_width = w;
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for (i = 1; i < w; i++)
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obuf[col + i].c_width = -1;
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} else if ((wint_t)obuf[col].c_char == c) {
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode |= BOLD|mode;
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} else {
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w = obuf[col].c_width;
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode = mode;
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}
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col += w;
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if (col > maxcol)
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maxcol = col;
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continue;
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}
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}
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if (ferror(f))
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err(1, NULL);
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if (maxcol)
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flushln();
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}
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static void
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flushln(void)
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{
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int lastmode;
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int i;
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int hadmodes = 0;
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lastmode = NORMAL;
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for (i = 0; i < maxcol; i++) {
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if (obuf[i].c_mode != lastmode) {
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hadmodes++;
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setnewmode(obuf[i].c_mode);
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lastmode = obuf[i].c_mode;
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}
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if (obuf[i].c_char == '\0') {
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if (upln)
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PRINT(CURS_RIGHT);
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else
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outc(' ', 1);
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} else
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outc(obuf[i].c_char, obuf[i].c_width);
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if (obuf[i].c_width > 1)
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i += obuf[i].c_width - 1;
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}
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if (lastmode != NORMAL) {
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setnewmode(0);
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}
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if (must_overstrike && hadmodes)
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overstrike();
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putwchar('\n');
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if (iflag && hadmodes)
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iattr();
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(void)fflush(stdout);
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if (upln)
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upln--;
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initbuf();
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}
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/*
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* For terminals that can overstrike, overstrike underlines and bolds.
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* We don't do anything with halfline ups and downs, or Greek.
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*/
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static void
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overstrike(void)
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{
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int i;
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wchar_t lbuf[256];
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wchar_t *cp = lbuf;
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int hadbold=0;
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/* Set up overstrike buffer */
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for (i=0; i<maxcol; i++)
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switch (obuf[i].c_mode) {
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case NORMAL:
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default:
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*cp++ = ' ';
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break;
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case UNDERL:
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*cp++ = '_';
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break;
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case BOLD:
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*cp++ = obuf[i].c_char;
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if (obuf[i].c_width > 1)
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i += obuf[i].c_width - 1;
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hadbold=1;
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break;
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}
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putwchar('\r');
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for (*cp=' '; *cp==' '; cp--)
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*cp = 0;
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for (cp=lbuf; *cp; cp++)
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putwchar(*cp);
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if (hadbold) {
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putwchar('\r');
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for (cp=lbuf; *cp; cp++)
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putwchar(*cp=='_' ? ' ' : *cp);
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putwchar('\r');
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for (cp=lbuf; *cp; cp++)
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putwchar(*cp=='_' ? ' ' : *cp);
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}
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}
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static void
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iattr(void)
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{
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int i;
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wchar_t lbuf[256];
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wchar_t *cp = lbuf;
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for (i=0; i<maxcol; i++)
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switch (obuf[i].c_mode) {
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case NORMAL: *cp++ = ' '; break;
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case ALTSET: *cp++ = 'g'; break;
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case SUPERSC: *cp++ = '^'; break;
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case SUBSC: *cp++ = 'v'; break;
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case UNDERL: *cp++ = '_'; break;
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case BOLD: *cp++ = '!'; break;
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default: *cp++ = 'X'; break;
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}
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for (*cp=' '; *cp==' '; cp--)
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*cp = 0;
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for (cp=lbuf; *cp; cp++)
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putwchar(*cp);
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putwchar('\n');
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}
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static void
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initbuf(void)
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{
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bzero((char *)obuf, buflen * sizeof(*obuf)); /* depends on NORMAL == 0 */
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col = 0;
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maxcol = 0;
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mode &= ALTSET;
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}
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static void
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fwd(void)
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{
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int oldcol, oldmax;
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oldcol = col;
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oldmax = maxcol;
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flushln();
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col = oldcol;
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maxcol = oldmax;
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}
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static void
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reverse(void)
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{
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upln++;
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fwd();
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PRINT(CURS_UP);
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PRINT(CURS_UP);
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upln++;
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}
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static void
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initcap(void)
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{
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static char tcapbuf[512];
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char *bp = tcapbuf;
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/* This nonsense attempts to work with both old and new termcap */
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CURS_UP = tgetstr("up", &bp);
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CURS_RIGHT = tgetstr("ri", &bp);
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if (CURS_RIGHT == NULL)
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CURS_RIGHT = tgetstr("nd", &bp);
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CURS_LEFT = tgetstr("le", &bp);
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if (CURS_LEFT == NULL)
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CURS_LEFT = tgetstr("bc", &bp);
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if (CURS_LEFT == NULL && tgetflag("bs"))
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CURS_LEFT = "\b";
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ENTER_STANDOUT = tgetstr("so", &bp);
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EXIT_STANDOUT = tgetstr("se", &bp);
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ENTER_UNDERLINE = tgetstr("us", &bp);
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EXIT_UNDERLINE = tgetstr("ue", &bp);
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ENTER_DIM = tgetstr("mh", &bp);
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ENTER_BOLD = tgetstr("md", &bp);
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ENTER_REVERSE = tgetstr("mr", &bp);
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EXIT_ATTRIBUTES = tgetstr("me", &bp);
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if (!ENTER_BOLD && ENTER_REVERSE)
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ENTER_BOLD = ENTER_REVERSE;
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if (!ENTER_BOLD && ENTER_STANDOUT)
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ENTER_BOLD = ENTER_STANDOUT;
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if (!ENTER_UNDERLINE && ENTER_STANDOUT) {
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ENTER_UNDERLINE = ENTER_STANDOUT;
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EXIT_UNDERLINE = EXIT_STANDOUT;
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}
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if (!ENTER_DIM && ENTER_STANDOUT)
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ENTER_DIM = ENTER_STANDOUT;
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if (!ENTER_REVERSE && ENTER_STANDOUT)
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ENTER_REVERSE = ENTER_STANDOUT;
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if (!EXIT_ATTRIBUTES && EXIT_STANDOUT)
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EXIT_ATTRIBUTES = EXIT_STANDOUT;
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/*
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* Note that we use REVERSE for the alternate character set,
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* not the as/ae capabilities. This is because we are modelling
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* the model 37 teletype (since that's what nroff outputs) and
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* the typical as/ae is more of a graphics set, not the greek
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* letters the 37 has.
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*/
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UNDER_CHAR = tgetstr("uc", &bp);
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must_use_uc = (UNDER_CHAR && !ENTER_UNDERLINE);
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}
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static int
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outchar(int c)
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{
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return (putwchar(c) != WEOF ? c : EOF);
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}
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static int curmode = 0;
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static void
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outc(wint_t c, int width)
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{
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int i;
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putwchar(c);
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if (must_use_uc && (curmode&UNDERL)) {
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for (i = 0; i < width; i++)
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PRINT(CURS_LEFT);
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for (i = 0; i < width; i++)
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PRINT(UNDER_CHAR);
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}
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}
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static void
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setnewmode(int newmode)
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{
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if (!iflag) {
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if (curmode != NORMAL && newmode != NORMAL)
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setnewmode(NORMAL);
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switch (newmode) {
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case NORMAL:
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switch(curmode) {
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case NORMAL:
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|
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;
|
|
}
|