mirror of
https://github.com/Aigor44/ncursesw-morphos.git
synced 2024-12-27 07:49:06 +08:00
f7b8e526e0
+ remove a spurious newline from output of html.m4, which caused links for Ada95 html to be incorrect for the files generated using m4. + start investigating mutex's for SCREEN manipulation (incomplete). + minor cleanup of codes.c/names.c for --enable-const + expand/revise "Routine and Argument Names" section of ncurses manpage to address report by David Givens in newsgroup discussion. + fix interaction between --without-progs/--with-termcap configure options (report by Michail Vidiassov). + fix typo in "--disable-relink" option (report by Michail Vidiassov).
601 lines
16 KiB
C
601 lines
16 KiB
C
/****************************************************************************
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* Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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****************************************************************************/
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/*
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* Terminal setup routines common to termcap and terminfo:
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*
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* use_env(bool)
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* setupterm(char *, int, int *)
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*/
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#include <curses.priv.h>
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#include <tic.h> /* for MAX_NAME_SIZE */
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#include <term_entry.h>
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#if SVR4_TERMIO && !defined(_POSIX_SOURCE)
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#define _POSIX_SOURCE
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#endif
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#if HAVE_LOCALE_H
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#include <locale.h>
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#endif
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#include <term.h> /* lines, columns, cur_term */
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MODULE_ID("$Id: lib_setup.c,v 1.100 2007/09/01 20:58:26 tom Exp $")
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/****************************************************************************
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*
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* Terminal size computation
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*
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****************************************************************************/
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#if HAVE_SIZECHANGE
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# if !defined(sun) || !TERMIOS
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# if HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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# endif
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# endif
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#endif
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#if NEED_PTEM_H
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/* On SCO, they neglected to define struct winsize in termios.h -- it's only
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* in termio.h and ptem.h (the former conflicts with other definitions).
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*/
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# include <sys/stream.h>
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# include <sys/ptem.h>
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#endif
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#if HAVE_LANGINFO_CODESET
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#include <langinfo.h>
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#endif
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/*
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* SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS,
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* Solaris, IRIX) define TIOCGWINSZ and struct winsize.
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*/
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#ifdef TIOCGSIZE
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# define IOCTL_WINSIZE TIOCGSIZE
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# define STRUCT_WINSIZE struct ttysize
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# define WINSIZE_ROWS(n) (int)n.ts_lines
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# define WINSIZE_COLS(n) (int)n.ts_cols
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#else
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# ifdef TIOCGWINSZ
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# define IOCTL_WINSIZE TIOCGWINSZ
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# define STRUCT_WINSIZE struct winsize
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# define WINSIZE_ROWS(n) (int)n.ws_row
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# define WINSIZE_COLS(n) (int)n.ws_col
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# endif
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#endif
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#if USE_REENTRANT
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NCURSES_EXPORT(char *)
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NCURSES_PUBLIC_VAR(ttytype) (void)
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{
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static char empty[] = "";
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return cur_term ? cur_term->type.term_names : empty;
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}
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NCURSES_EXPORT(int)
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NCURSES_PUBLIC_VAR(LINES) (void)
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{
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return (SP ? SP->_LINES : _nc_prescreen._LINES);
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}
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NCURSES_EXPORT(int)
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NCURSES_PUBLIC_VAR(COLS) (void)
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{
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return SP ? SP->_COLS : _nc_prescreen._COLS;
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}
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NCURSES_EXPORT(int)
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NCURSES_PUBLIC_VAR(TABSIZE) (void)
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{
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return SP ? SP->_TABSIZE : 8;
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}
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#else
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NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = "";
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NCURSES_EXPORT_VAR(int) LINES = 0;
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NCURSES_EXPORT_VAR(int) COLS = 0;
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NCURSES_EXPORT_VAR(int) TABSIZE = 0;
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#endif
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#if USE_SIGWINCH
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/*
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* If we have a pending SIGWINCH, set the flag in each screen.
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*/
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NCURSES_EXPORT(int)
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_nc_handle_sigwinch(int update)
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{
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SCREEN *scan;
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(void) update; /* no longer used */
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if (_nc_globals.have_sigwinch) {
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_nc_globals.have_sigwinch = 0;
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scan = _nc_screen_chain;
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while (scan) {
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scan->_sig_winch = TRUE;
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scan = scan->_next_screen;
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}
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}
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return (SP ? SP->_sig_winch : 0);
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}
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#endif
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NCURSES_EXPORT(void)
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use_env(bool f)
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{
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T((T_CALLED("use_env()")));
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_nc_prescreen.use_env = f;
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returnVoid;
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}
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NCURSES_EXPORT(void)
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_nc_get_screensize(int *linep, int *colp)
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/* Obtain lines/columns values from the environment and/or terminfo entry */
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{
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int my_tabsize;
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/* figure out the size of the screen */
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T(("screen size: terminfo lines = %d columns = %d", lines, columns));
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if (!_nc_prescreen.use_env) {
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*linep = (int) lines;
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*colp = (int) columns;
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} else { /* usually want to query LINES and COLUMNS from environment */
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int value;
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*linep = *colp = 0;
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/* first, look for environment variables */
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if ((value = _nc_getenv_num("LINES")) > 0) {
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*linep = value;
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}
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if ((value = _nc_getenv_num("COLUMNS")) > 0) {
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*colp = value;
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}
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T(("screen size: environment LINES = %d COLUMNS = %d", *linep, *colp));
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#ifdef __EMX__
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if (*linep <= 0 || *colp <= 0) {
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int screendata[2];
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_scrsize(screendata);
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*colp = screendata[0];
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*linep = screendata[1];
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T(("EMX screen size: environment LINES = %d COLUMNS = %d",
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*linep, *colp));
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}
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#endif
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#if HAVE_SIZECHANGE
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/* if that didn't work, maybe we can try asking the OS */
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if (*linep <= 0 || *colp <= 0) {
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if (isatty(cur_term->Filedes)) {
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STRUCT_WINSIZE size;
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errno = 0;
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do {
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if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) < 0
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&& errno != EINTR)
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goto failure;
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} while
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(errno == EINTR);
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/*
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* Solaris lets users override either dimension with an
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* environment variable.
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*/
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if (*linep <= 0)
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*linep = (SP != 0 && SP->_filtered) ? 1 : WINSIZE_ROWS(size);
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if (*colp <= 0)
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*colp = WINSIZE_COLS(size);
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}
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/* FALLTHRU */
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failure:;
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}
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#endif /* HAVE_SIZECHANGE */
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/* if we can't get dynamic info about the size, use static */
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if (*linep <= 0) {
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*linep = (int) lines;
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}
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if (*colp <= 0) {
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*colp = (int) columns;
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}
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/* the ultimate fallback, assume fixed 24x80 size */
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if (*linep <= 0) {
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*linep = 24;
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}
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if (*colp <= 0) {
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*colp = 80;
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}
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/*
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* Put the derived values back in the screen-size caps, so
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* tigetnum() and tgetnum() will do the right thing.
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*/
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lines = (short) (*linep);
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columns = (short) (*colp);
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}
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T(("screen size is %dx%d", *linep, *colp));
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if (VALID_NUMERIC(init_tabs))
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my_tabsize = (int) init_tabs;
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else
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my_tabsize = 8;
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#if USE_REENTRANT
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if (SP != 0)
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SP->_TABSIZE = my_tabsize;
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#else
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TABSIZE = my_tabsize;
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#endif
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T(("TABSIZE = %d", TABSIZE));
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}
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#if USE_SIZECHANGE
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NCURSES_EXPORT(void)
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_nc_update_screensize(void)
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{
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int old_lines = lines;
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int new_lines;
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int old_cols = columns;
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int new_cols;
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_nc_get_screensize(&new_lines, &new_cols);
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/*
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* See is_term_resized() and resizeterm().
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* We're doing it this way because those functions belong to the upper
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* ncurses library, while this resides in the lower terminfo library.
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*/
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if (SP != 0
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&& SP->_resize != 0) {
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if ((new_lines != old_lines) || (new_cols != old_cols))
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SP->_resize(new_lines, new_cols);
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SP->_sig_winch = FALSE;
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}
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}
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#endif
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/****************************************************************************
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*
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* Terminal setup
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*
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****************************************************************************/
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#define ret_error(code, fmt, arg) if (errret) {\
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*errret = code;\
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returnCode(ERR);\
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} else {\
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fprintf(stderr, fmt, arg);\
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exit(EXIT_FAILURE);\
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}
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#define ret_error0(code, msg) if (errret) {\
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*errret = code;\
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returnCode(ERR);\
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} else {\
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fprintf(stderr, msg);\
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exit(EXIT_FAILURE);\
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}
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#if USE_DATABASE || USE_TERMCAP
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/*
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* Return 1 if entry found, 0 if not found, -1 if database not accessible,
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* just like tgetent().
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*/
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static int
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grab_entry(const char *const tn, TERMTYPE *const tp)
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{
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char filename[PATH_MAX];
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int status = _nc_read_entry(tn, filename, tp);
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/*
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* If we have an entry, force all of the cancelled strings to null
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* pointers so we don't have to test them in the rest of the library.
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* (The terminfo compiler bypasses this logic, since it must know if
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* a string is cancelled, for merging entries).
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*/
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if (status == TGETENT_YES) {
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unsigned n;
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for_each_boolean(n, tp) {
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if (!VALID_BOOLEAN(tp->Booleans[n]))
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tp->Booleans[n] = FALSE;
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}
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for_each_string(n, tp) {
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if (tp->Strings[n] == CANCELLED_STRING)
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tp->Strings[n] = ABSENT_STRING;
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}
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}
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return (status);
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}
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#endif
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/*
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** do_prototype()
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**
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** Take the real command character out of the CC environment variable
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** and substitute it in for the prototype given in 'command_character'.
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*/
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static void
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do_prototype(void)
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{
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int i;
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char CC;
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char proto;
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char *tmp;
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tmp = getenv("CC");
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CC = *tmp;
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proto = *command_character;
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for_each_string(i, &(cur_term->type)) {
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for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) {
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if (*tmp == proto)
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*tmp = CC;
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}
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}
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}
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/*
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* Find the locale which is in effect.
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*/
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NCURSES_EXPORT(char *)
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_nc_get_locale(void)
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{
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char *env;
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#if HAVE_LOCALE_H
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/*
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* This is preferable to using getenv() since it ensures that we are using
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* the locale which was actually initialized by the application.
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*/
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env = setlocale(LC_CTYPE, 0);
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#else
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if (((env = getenv("LC_ALL")) != 0 && *env != '\0')
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|| ((env = getenv("LC_CTYPE")) != 0 && *env != '\0')
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|| ((env = getenv("LANG")) != 0 && *env != '\0')) {
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;
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}
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#endif
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T(("_nc_get_locale %s", _nc_visbuf(env)));
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return env;
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}
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/*
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* Check if we are running in a UTF-8 locale.
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*/
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NCURSES_EXPORT(int)
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_nc_unicode_locale(void)
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{
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int result = 0;
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#if HAVE_LANGINFO_CODESET
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char *env = nl_langinfo(CODESET);
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result = !strcmp(env, "UTF-8");
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T(("_nc_unicode_locale(%s) ->%d", env, result));
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#else
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char *env = _nc_get_locale();
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if (env != 0) {
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if (strstr(env, ".UTF-8") != 0) {
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result = 1;
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T(("_nc_unicode_locale(%s) ->%d", env, result));
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}
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}
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#endif
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return result;
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}
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#define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0)
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#define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0)
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/*
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* Check for known broken cases where a UTF-8 locale breaks the alternate
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* character set.
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*/
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NCURSES_EXPORT(int)
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_nc_locale_breaks_acs(void)
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{
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char *env;
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if ((env = getenv("NCURSES_NO_UTF8_ACS")) != 0) {
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return atoi(env);
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} else if ((env = getenv("TERM")) != 0) {
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if (strstr(env, "linux"))
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return 1; /* always broken */
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if (strstr(env, "screen") != 0
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&& ((env = getenv("TERMCAP")) != 0
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&& strstr(env, "screen") != 0)
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&& strstr(env, "hhII00") != 0) {
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if (CONTROL_N(enter_alt_charset_mode) ||
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CONTROL_O(enter_alt_charset_mode) ||
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CONTROL_N(set_attributes) ||
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CONTROL_O(set_attributes))
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return 1;
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}
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}
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return 0;
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}
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/*
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* This entrypoint is called from tgetent() to allow a special case of reusing
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* the same TERMINAL data (see comment).
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*/
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NCURSES_EXPORT(int)
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_nc_setupterm(NCURSES_CONST char *tname, int Filedes, int *errret, bool reuse)
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{
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int status;
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START_TRACE();
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T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret));
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if (tname == 0) {
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tname = getenv("TERM");
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if (tname == 0 || *tname == '\0') {
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ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
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}
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}
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if (strlen(tname) > MAX_NAME_SIZE) {
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ret_error(TGETENT_ERR,
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"TERM environment must be <= %d characters.\n",
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MAX_NAME_SIZE);
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}
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T(("your terminal name is %s", tname));
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/*
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* Allow output redirection. This is what SVr3 does. If stdout is
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* directed to a file, screen updates go to standard error.
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*/
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if (Filedes == STDOUT_FILENO && !isatty(Filedes))
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Filedes = STDERR_FILENO;
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/*
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* Check if we have already initialized to use this terminal. If so, we
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* do not need to re-read the terminfo entry, or obtain TTY settings.
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*
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* This is an improvement on SVr4 curses. If an application mixes curses
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* and termcap calls, it may call both initscr and tgetent. This is not
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* really a good thing to do, but can happen if someone tries using ncurses
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* with the readline library. The problem we are fixing is that when
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* tgetent calls setupterm, the resulting Ottyb struct in cur_term is
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* zeroed. A subsequent call to endwin uses the zeroed terminal settings
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* rather than the ones saved in initscr. So we check if cur_term appears
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* to contain terminal settings for the same output file as our current
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* call - and copy those terminal settings. (SVr4 curses does not do this,
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* however applications that are working around the problem will still work
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* properly with this feature).
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*/
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if (reuse
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&& cur_term != 0
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&& cur_term->Filedes == Filedes
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&& cur_term->_termname != 0
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&& !strcmp(cur_term->_termname, tname)
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&& _nc_name_match(cur_term->type.term_names, tname, "|")) {
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T(("reusing existing terminal information and mode-settings"));
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} else {
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TERMINAL *term_ptr;
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term_ptr = typeCalloc(TERMINAL, 1);
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if (term_ptr == 0) {
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ret_error0(TGETENT_ERR,
|
|
"Not enough memory to create terminal structure.\n");
|
|
}
|
|
#if USE_DATABASE || USE_TERMCAP
|
|
status = grab_entry(tname, &term_ptr->type);
|
|
#else
|
|
status = TGETENT_NO;
|
|
#endif
|
|
|
|
/* try fallback list if entry on disk */
|
|
if (status != TGETENT_YES) {
|
|
const TERMTYPE *fallback = _nc_fallback(tname);
|
|
|
|
if (fallback) {
|
|
term_ptr->type = *fallback;
|
|
status = TGETENT_YES;
|
|
}
|
|
}
|
|
|
|
if (status != TGETENT_YES) {
|
|
del_curterm(term_ptr);
|
|
if (status == TGETENT_ERR) {
|
|
ret_error0(status, "terminals database is inaccessible\n");
|
|
} else if (status == TGETENT_NO) {
|
|
ret_error(status, "'%s': unknown terminal type.\n", tname);
|
|
}
|
|
}
|
|
|
|
set_curterm(term_ptr);
|
|
|
|
if (command_character && getenv("CC"))
|
|
do_prototype();
|
|
|
|
#if !USE_REENTRANT
|
|
strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
|
|
ttytype[NAMESIZE - 1] = '\0';
|
|
#endif
|
|
|
|
cur_term->Filedes = Filedes;
|
|
cur_term->_termname = strdup(tname);
|
|
|
|
/*
|
|
* If an application calls setupterm() rather than initscr() or
|
|
* newterm(), we will not have the def_prog_mode() call in
|
|
* _nc_setupscreen(). Do it now anyway, so we can initialize the
|
|
* baudrate.
|
|
*/
|
|
if (isatty(Filedes)) {
|
|
def_prog_mode();
|
|
baudrate();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We should always check the screensize, just in case.
|
|
*/
|
|
#if USE_REENTRANT
|
|
_nc_get_screensize(SP ? &(SP->_LINES) : &(_nc_prescreen._LINES),
|
|
SP ? &(SP->_COLS) : &(_nc_prescreen._COLS));
|
|
#else
|
|
_nc_get_screensize(&LINES, &COLS);
|
|
#endif
|
|
|
|
if (errret)
|
|
*errret = TGETENT_YES;
|
|
|
|
if (generic_type) {
|
|
ret_error(TGETENT_NO, "'%s': I need something more specific.\n", tname);
|
|
}
|
|
if (hard_copy) {
|
|
ret_error(TGETENT_YES, "'%s': I can't handle hardcopy terminals.\n", tname);
|
|
}
|
|
returnCode(OK);
|
|
}
|
|
|
|
/*
|
|
* setupterm(termname, Filedes, errret)
|
|
*
|
|
* Find and read the appropriate object file for the terminal
|
|
* Make cur_term point to the structure.
|
|
*/
|
|
NCURSES_EXPORT(int)
|
|
setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
|
|
{
|
|
return _nc_setupterm(tname, Filedes, errret, FALSE);
|
|
}
|