mirror of
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Add ncurses 6.4
This commit is contained in:
Justine Tunney
parent
6ee5580adc
commit
0ed7309fdb
3071 changed files with 69379 additions and 1 deletions
802
third_party/ncurses/lib_getch.c
vendored
Normal file
802
third_party/ncurses/lib_getch.c
vendored
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@ -0,0 +1,802 @@
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/****************************************************************************
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* Copyright 2018-2021,2022 Thomas E. Dickey *
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* Copyright 1998-2015,2016 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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* and: Juergen Pfeifer 2009 *
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****************************************************************************/
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/*
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** lib_getch.c
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**
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** The routine getch().
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**
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*/
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#define NEED_KEY_EVENT
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#include "curses.priv.h"
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MODULE_ID("$Id: lib_getch.c,v 1.145 2022/12/24 22:38:38 tom Exp $")
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#include "fifo_defs.h"
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#if USE_REENTRANT
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#define GetEscdelay(sp) *_nc_ptr_Escdelay(sp)
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NCURSES_EXPORT(int)
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NCURSES_PUBLIC_VAR(ESCDELAY) (void)
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{
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return *(_nc_ptr_Escdelay(CURRENT_SCREEN));
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}
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NCURSES_EXPORT(int *)
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_nc_ptr_Escdelay(SCREEN *sp)
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{
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return ptrEscdelay(sp);
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}
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#else
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#define GetEscdelay(sp) ESCDELAY
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NCURSES_EXPORT_VAR(int) ESCDELAY = 1000;
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#endif
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#if NCURSES_EXT_FUNCS
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NCURSES_EXPORT(int)
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NCURSES_SP_NAME(set_escdelay) (NCURSES_SP_DCLx int value)
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{
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int code = OK;
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if (value < 0) {
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code = ERR;
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} else {
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#if USE_REENTRANT
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if (SP_PARM) {
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SET_ESCDELAY(value);
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} else {
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code = ERR;
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}
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#else
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(void) SP_PARM;
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ESCDELAY = value;
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#endif
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}
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return code;
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}
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#if NCURSES_SP_FUNCS
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NCURSES_EXPORT(int)
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set_escdelay(int value)
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{
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int code;
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if (value < 0) {
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code = ERR;
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} else {
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#if USE_REENTRANT
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code = NCURSES_SP_NAME(set_escdelay) (CURRENT_SCREEN, value);
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#else
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ESCDELAY = value;
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code = OK;
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#endif
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}
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return code;
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}
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#endif
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#endif /* NCURSES_EXT_FUNCS */
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#if NCURSES_EXT_FUNCS
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NCURSES_EXPORT(int)
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NCURSES_SP_NAME(get_escdelay) (NCURSES_SP_DCL0)
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{
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#if !USE_REENTRANT
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(void) SP_PARM;
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#endif
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return GetEscdelay(SP_PARM);
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}
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#if NCURSES_SP_FUNCS
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NCURSES_EXPORT(int)
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get_escdelay(void)
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{
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return NCURSES_SP_NAME(get_escdelay) (CURRENT_SCREEN);
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}
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#endif
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#endif /* NCURSES_EXT_FUNCS */
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static int
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_nc_use_meta(WINDOW *win)
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{
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SCREEN *sp = _nc_screen_of(win);
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return (sp ? sp->_use_meta : 0);
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}
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#ifdef USE_TERM_DRIVER
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# if defined(_NC_WINDOWS) && !defined(EXP_WIN32_DRIVER)
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static HANDLE
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_nc_get_handle(int fd)
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{
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intptr_t value = _get_osfhandle(fd);
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return (HANDLE) value;
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}
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# endif
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#endif
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/*
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* Check for mouse activity, returning nonzero if we find any.
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*/
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static int
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check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
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{
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int rc;
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#ifdef USE_TERM_DRIVER
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TERMINAL_CONTROL_BLOCK *TCB = TCBOf(sp);
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rc = TCBOf(sp)->drv->td_testmouse(TCBOf(sp), delay EVENTLIST_2nd(evl));
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# if defined(EXP_WIN32_DRIVER)
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/* if we emulate terminfo on console, we have to use the console routine */
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if (IsTermInfoOnConsole(sp)) {
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rc = _nc_console_testmouse(sp,
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_nc_console_handle(sp->_ifd),
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delay EVENTLIST_2nd(evl));
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} else
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# elif defined(_NC_WINDOWS)
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/* if we emulate terminfo on console, we have to use the console routine */
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if (IsTermInfoOnConsole(sp)) {
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HANDLE fd = _nc_get_handle(sp->_ifd);
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rc = _nc_mingw_testmouse(sp, fd, delay EVENTLIST_2nd(evl));
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} else
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# endif
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rc = TCB->drv->td_testmouse(TCB, delay EVENTLIST_2nd(evl));
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#else /* !USE_TERM_DRIVER */
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# if USE_SYSMOUSE
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if ((sp->_mouse_type == M_SYSMOUSE)
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&& (sp->_sysmouse_head < sp->_sysmouse_tail)) {
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rc = TW_MOUSE;
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} else
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# endif
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{
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# if defined(EXP_WIN32_DRIVER)
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rc = _nc_console_testmouse(sp,
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_nc_console_handle(sp->_ifd),
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delay
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EVENTLIST_2nd(evl));
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# else
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rc = _nc_timed_wait(sp,
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TWAIT_MASK,
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delay,
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(int *) 0
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EVENTLIST_2nd(evl));
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# endif
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# if USE_SYSMOUSE
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if ((sp->_mouse_type == M_SYSMOUSE)
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&& (sp->_sysmouse_head < sp->_sysmouse_tail)
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&& (rc == 0)
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&& (errno == EINTR)) {
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rc |= TW_MOUSE;
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}
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# endif
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}
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#endif /* USE_TERM_DRIVER */
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return rc;
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}
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static NCURSES_INLINE int
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fifo_peek(SCREEN *sp)
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{
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int ch = (peek >= 0) ? sp->_fifo[peek] : ERR;
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TR(TRACE_IEVENT, ("peeking at %d", peek));
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p_inc();
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return ch;
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}
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static NCURSES_INLINE int
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fifo_pull(SCREEN *sp)
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{
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int ch = (head >= 0) ? sp->_fifo[head] : ERR;
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TR(TRACE_IEVENT, ("pulling %s from %d", _nc_tracechar(sp, ch), head));
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if (peek == head) {
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h_inc();
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peek = head;
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} else {
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h_inc();
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}
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#ifdef TRACE
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if (USE_TRACEF(TRACE_IEVENT)) {
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_nc_fifo_dump(sp);
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_nc_unlock_global(tracef);
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}
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#endif
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return ch;
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}
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static NCURSES_INLINE int
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fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
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{
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int n;
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int ch = 0;
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int mask = 0;
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(void) mask;
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if (tail < 0)
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return ERR;
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#ifdef NCURSES_WGETCH_EVENTS
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if (evl
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#if USE_GPM_SUPPORT || USE_EMX_MOUSE || USE_SYSMOUSE
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|| (sp->_mouse_fd >= 0)
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#endif
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) {
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mask = check_mouse_activity(sp, -1 EVENTLIST_2nd(evl));
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} else
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mask = 0;
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if (mask & TW_EVENT) {
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T(("fifo_push: ungetch KEY_EVENT"));
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safe_ungetch(sp, KEY_EVENT);
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return KEY_EVENT;
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}
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#elif USE_GPM_SUPPORT || USE_EMX_MOUSE || USE_SYSMOUSE
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if (sp->_mouse_fd >= 0) {
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mask = check_mouse_activity(sp, -1 EVENTLIST_2nd(evl));
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}
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#endif
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#if USE_GPM_SUPPORT || USE_EMX_MOUSE
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if ((sp->_mouse_fd >= 0) && (mask & TW_MOUSE)) {
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sp->_mouse_event(sp);
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ch = KEY_MOUSE;
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n = 1;
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} else
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#endif
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#if USE_SYSMOUSE
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if ((sp->_mouse_type == M_SYSMOUSE)
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&& (sp->_sysmouse_head < sp->_sysmouse_tail)) {
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sp->_mouse_event(sp);
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ch = KEY_MOUSE;
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n = 1;
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} else if ((sp->_mouse_type == M_SYSMOUSE)
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&& (mask <= 0) && errno == EINTR) {
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sp->_mouse_event(sp);
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ch = KEY_MOUSE;
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n = 1;
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} else
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#endif
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#ifdef USE_TERM_DRIVER
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if ((sp->_mouse_type == M_TERM_DRIVER)
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&& (sp->_drv_mouse_head < sp->_drv_mouse_tail)) {
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sp->_mouse_event(sp);
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ch = KEY_MOUSE;
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n = 1;
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} else
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#endif
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#if USE_KLIBC_KBD
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if (NC_ISATTY(sp->_ifd) && sp->_cbreak) {
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ch = _read_kbd(0, 1, !sp->_raw);
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n = (ch == -1) ? -1 : 1;
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sp->_extended_key = (ch == 0);
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} else
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#endif
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{ /* Can block... */
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#if defined(USE_TERM_DRIVER)
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int buf;
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# if defined(EXP_WIN32_DRIVER)
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if (NC_ISATTY(sp->_ifd) && IsTermInfoOnConsole(sp) && sp->_cbreak) {
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_nc_set_read_thread(TRUE);
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n = _nc_console_read(sp,
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_nc_console_handle(sp->_ifd),
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&buf);
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_nc_set_read_thread(FALSE);
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} else
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# elif defined(_NC_WINDOWS)
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if (NC_ISATTY(sp->_ifd) && IsTermInfoOnConsole(sp) && sp->_cbreak)
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n = _nc_mingw_console_read(sp,
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_nc_get_handle(sp->_ifd),
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&buf);
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else
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# endif /* EXP_WIN32_DRIVER */
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n = CallDriver_1(sp, td_read, &buf);
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ch = buf;
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#else /* !USE_TERM_DRIVER */
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#if defined(EXP_WIN32_DRIVER)
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int buf;
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#endif
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unsigned char c2 = 0;
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_nc_set_read_thread(TRUE);
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#if defined(EXP_WIN32_DRIVER)
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n = _nc_console_read(sp,
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_nc_console_handle(sp->_ifd),
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&buf);
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c2 = buf;
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#else
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n = (int) read(sp->_ifd, &c2, (size_t) 1);
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#endif
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_nc_set_read_thread(FALSE);
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ch = c2;
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#endif /* USE_TERM_DRIVER */
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}
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if ((n == -1) || (n == 0)) {
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TR(TRACE_IEVENT, ("read(%d,&ch,1)=%d, errno=%d", sp->_ifd, n, errno));
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ch = ERR;
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}
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TR(TRACE_IEVENT, ("read %d characters", n));
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sp->_fifo[tail] = ch;
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sp->_fifohold = 0;
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if (head == -1)
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head = peek = tail;
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t_inc();
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TR(TRACE_IEVENT, ("pushed %s at %d", _nc_tracechar(sp, ch), tail));
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#ifdef TRACE
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if (USE_TRACEF(TRACE_IEVENT)) {
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_nc_fifo_dump(sp);
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_nc_unlock_global(tracef);
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}
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#endif
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return ch;
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}
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static NCURSES_INLINE void
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fifo_clear(SCREEN *sp)
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{
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memset(sp->_fifo, 0, sizeof(sp->_fifo));
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head = -1;
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tail = peek = 0;
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}
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static int kgetch(SCREEN *, bool EVENTLIST_2nd(_nc_eventlist *));
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static void
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recur_wrefresh(WINDOW *win)
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{
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#ifdef USE_PTHREADS
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SCREEN *sp = _nc_screen_of(win);
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bool same_sp;
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if (_nc_use_pthreads) {
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_nc_lock_global(curses);
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same_sp = (sp == CURRENT_SCREEN);
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_nc_unlock_global(curses);
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} else {
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same_sp = (sp == CURRENT_SCREEN);
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}
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|
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if (_nc_use_pthreads && !same_sp) {
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SCREEN *save_SP;
|
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|
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/* temporarily switch to the window's screen to check/refresh */
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_nc_lock_global(curses);
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save_SP = CURRENT_SCREEN;
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_nc_set_screen(sp);
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recur_wrefresh(win);
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_nc_set_screen(save_SP);
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_nc_unlock_global(curses);
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} else
|
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#endif
|
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if ((is_wintouched(win) || (win->_flags & _HASMOVED))
|
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&& !IS_PAD(win)) {
|
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wrefresh(win);
|
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}
|
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}
|
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|
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static int
|
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recur_wgetnstr(WINDOW *win, char *buf)
|
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{
|
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SCREEN *sp = _nc_screen_of(win);
|
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int rc;
|
||||
|
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if (sp != 0) {
|
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#ifdef USE_PTHREADS
|
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if (_nc_use_pthreads && sp != CURRENT_SCREEN) {
|
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SCREEN *save_SP;
|
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|
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/* temporarily switch to the window's screen to get cooked input */
|
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_nc_lock_global(curses);
|
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save_SP = CURRENT_SCREEN;
|
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_nc_set_screen(sp);
|
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rc = recur_wgetnstr(win, buf);
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_nc_set_screen(save_SP);
|
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_nc_unlock_global(curses);
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} else
|
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#endif
|
||||
{
|
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sp->_called_wgetch = TRUE;
|
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rc = wgetnstr(win, buf, MAXCOLUMNS);
|
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sp->_called_wgetch = FALSE;
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}
|
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} else {
|
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rc = ERR;
|
||||
}
|
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return rc;
|
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}
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|
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NCURSES_EXPORT(int)
|
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_nc_wgetch(WINDOW *win,
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int *result,
|
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int use_meta
|
||||
EVENTLIST_2nd(_nc_eventlist * evl))
|
||||
{
|
||||
SCREEN *sp;
|
||||
int ch;
|
||||
int rc = 0;
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
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int event_delay = -1;
|
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#endif
|
||||
|
||||
T((T_CALLED("_nc_wgetch(%p)"), (void *) win));
|
||||
|
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*result = 0;
|
||||
|
||||
sp = _nc_screen_of(win);
|
||||
if (win == 0 || sp == 0) {
|
||||
returnCode(ERR);
|
||||
}
|
||||
|
||||
if (cooked_key_in_fifo()) {
|
||||
recur_wrefresh(win);
|
||||
*result = fifo_pull(sp);
|
||||
returnCode(*result >= KEY_MIN ? KEY_CODE_YES : OK);
|
||||
}
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
if (evl && (evl->count == 0))
|
||||
evl = NULL;
|
||||
event_delay = _nc_eventlist_timeout(evl);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Handle cooked mode. Grab a string from the screen,
|
||||
* stuff its contents in the FIFO queue, and pop off
|
||||
* the first character to return it.
|
||||
*/
|
||||
if (head == -1 &&
|
||||
!sp->_notty &&
|
||||
!sp->_raw &&
|
||||
!sp->_cbreak &&
|
||||
!sp->_called_wgetch) {
|
||||
char buf[MAXCOLUMNS], *bufp;
|
||||
|
||||
TR(TRACE_IEVENT, ("filling queue in cooked mode"));
|
||||
|
||||
/* ungetch in reverse order */
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
rc = recur_wgetnstr(win, buf);
|
||||
if (rc != KEY_EVENT && rc != ERR)
|
||||
safe_ungetch(sp, '\n');
|
||||
#else
|
||||
if (recur_wgetnstr(win, buf) != ERR)
|
||||
safe_ungetch(sp, '\n');
|
||||
#endif
|
||||
for (bufp = buf + strlen(buf); bufp > buf; bufp--)
|
||||
safe_ungetch(sp, bufp[-1]);
|
||||
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
/* Return it first */
|
||||
if (rc == KEY_EVENT) {
|
||||
*result = rc;
|
||||
} else
|
||||
#endif
|
||||
*result = fifo_pull(sp);
|
||||
returnCode(*result >= KEY_MIN ? KEY_CODE_YES : OK);
|
||||
}
|
||||
|
||||
if (win->_use_keypad != sp->_keypad_on)
|
||||
_nc_keypad(sp, win->_use_keypad);
|
||||
|
||||
recur_wrefresh(win);
|
||||
|
||||
if (win->_notimeout || (win->_delay >= 0) || (sp->_cbreak > 1)) {
|
||||
if (head == -1) { /* fifo is empty */
|
||||
int delay;
|
||||
|
||||
TR(TRACE_IEVENT, ("timed delay in wgetch()"));
|
||||
if (sp->_cbreak > 1)
|
||||
delay = (sp->_cbreak - 1) * 100;
|
||||
else
|
||||
delay = win->_delay;
|
||||
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
if (event_delay >= 0 && delay > event_delay)
|
||||
delay = event_delay;
|
||||
#endif
|
||||
|
||||
TR(TRACE_IEVENT, ("delay is %d milliseconds", delay));
|
||||
|
||||
rc = check_mouse_activity(sp, delay EVENTLIST_2nd(evl));
|
||||
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
if (rc & TW_EVENT) {
|
||||
*result = KEY_EVENT;
|
||||
returnCode(KEY_CODE_YES);
|
||||
}
|
||||
#endif
|
||||
if (!rc) {
|
||||
goto check_sigwinch;
|
||||
}
|
||||
}
|
||||
/* else go on to read data available */
|
||||
}
|
||||
|
||||
if (win->_use_keypad) {
|
||||
/*
|
||||
* This is tricky. We only want to get special-key
|
||||
* events one at a time. But we want to accumulate
|
||||
* mouse events until either (a) the mouse logic tells
|
||||
* us it has picked up a complete gesture, or (b)
|
||||
* there's a detectable time lapse after one.
|
||||
*
|
||||
* Note: if the mouse code starts failing to compose
|
||||
* press/release events into clicks, you should probably
|
||||
* increase the wait with mouseinterval().
|
||||
*/
|
||||
int runcount = 0;
|
||||
|
||||
do {
|
||||
ch = kgetch(sp, win->_notimeout EVENTLIST_2nd(evl));
|
||||
if (ch == KEY_MOUSE) {
|
||||
++runcount;
|
||||
if (sp->_mouse_inline(sp))
|
||||
break;
|
||||
}
|
||||
if (sp->_maxclick < 0)
|
||||
break;
|
||||
} while
|
||||
(ch == KEY_MOUSE
|
||||
&& (((rc = check_mouse_activity(sp, sp->_maxclick
|
||||
EVENTLIST_2nd(evl))) != 0
|
||||
&& !(rc & TW_EVENT))
|
||||
|| !sp->_mouse_parse(sp, runcount)));
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
if ((rc & TW_EVENT) && !(ch == KEY_EVENT)) {
|
||||
safe_ungetch(sp, ch);
|
||||
ch = KEY_EVENT;
|
||||
}
|
||||
#endif
|
||||
if (runcount > 0 && ch != KEY_MOUSE) {
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
/* mouse event sequence ended by an event, report event */
|
||||
if (ch == KEY_EVENT) {
|
||||
safe_ungetch(sp, KEY_MOUSE); /* FIXME This interrupts a gesture... */
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
/* mouse event sequence ended by keystroke, store keystroke */
|
||||
safe_ungetch(sp, ch);
|
||||
ch = KEY_MOUSE;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (head == -1)
|
||||
fifo_push(sp EVENTLIST_2nd(evl));
|
||||
ch = fifo_pull(sp);
|
||||
}
|
||||
|
||||
if (ch == ERR) {
|
||||
check_sigwinch:
|
||||
#if USE_SIZECHANGE
|
||||
if (_nc_handle_sigwinch(sp)) {
|
||||
_nc_update_screensize(sp);
|
||||
/* resizeterm can push KEY_RESIZE */
|
||||
if (cooked_key_in_fifo()) {
|
||||
*result = fifo_pull(sp);
|
||||
/*
|
||||
* Get the ERR from queue -- it is from WINCH,
|
||||
* so we should take it out, the "error" is handled.
|
||||
*/
|
||||
if (fifo_peek(sp) == -1)
|
||||
fifo_pull(sp);
|
||||
returnCode(*result >= KEY_MIN ? KEY_CODE_YES : OK);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
returnCode(ERR);
|
||||
}
|
||||
|
||||
/*
|
||||
* If echo() is in effect, display the printable version of the
|
||||
* key on the screen. Carriage return and backspace are treated
|
||||
* specially by Solaris curses:
|
||||
*
|
||||
* If carriage return is defined as a function key in the
|
||||
* terminfo, e.g., kent, then Solaris may return either ^J (or ^M
|
||||
* if nonl() is set) or KEY_ENTER depending on the echo() mode.
|
||||
* We echo before translating carriage return based on nonl(),
|
||||
* since the visual result simply moves the cursor to column 0.
|
||||
*
|
||||
* Backspace is a different matter. Solaris curses does not
|
||||
* translate it to KEY_BACKSPACE if kbs=^H. This does not depend
|
||||
* on the stty modes, but appears to be a hardcoded special case.
|
||||
* This is a difference from ncurses, which uses the terminfo entry.
|
||||
* However, we provide the same visual result as Solaris, moving the
|
||||
* cursor to the left.
|
||||
*/
|
||||
if (sp->_echo && !IS_PAD(win)) {
|
||||
chtype backup = (chtype) ((ch == KEY_BACKSPACE) ? '\b' : ch);
|
||||
if (backup < KEY_MIN)
|
||||
wechochar(win, backup);
|
||||
}
|
||||
|
||||
/*
|
||||
* Simulate ICRNL mode
|
||||
*/
|
||||
if ((ch == '\r') && sp->_nl)
|
||||
ch = '\n';
|
||||
|
||||
/* Strip 8th-bit if so desired. We do this only for characters that
|
||||
* are in the range 128-255, to provide compatibility with terminals
|
||||
* that display only 7-bit characters. Note that 'ch' may be a
|
||||
* function key at this point, so we mustn't strip _those_.
|
||||
*/
|
||||
if (!use_meta)
|
||||
if ((ch < KEY_MIN) && (ch & 0x80))
|
||||
ch &= 0x7f;
|
||||
|
||||
T(("wgetch returning : %s", _nc_tracechar(sp, ch)));
|
||||
|
||||
*result = ch;
|
||||
returnCode(ch >= KEY_MIN ? KEY_CODE_YES : OK);
|
||||
}
|
||||
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
NCURSES_EXPORT(int)
|
||||
wgetch_events(WINDOW *win, _nc_eventlist * evl)
|
||||
{
|
||||
int code;
|
||||
int value;
|
||||
|
||||
T((T_CALLED("wgetch_events(%p,%p)"), (void *) win, (void *) evl));
|
||||
code = _nc_wgetch(win,
|
||||
&value,
|
||||
_nc_use_meta(win)
|
||||
EVENTLIST_2nd(evl));
|
||||
if (code != ERR)
|
||||
code = value;
|
||||
returnCode(code);
|
||||
}
|
||||
#endif
|
||||
|
||||
NCURSES_EXPORT(int)
|
||||
wgetch(WINDOW *win)
|
||||
{
|
||||
int code;
|
||||
int value;
|
||||
|
||||
T((T_CALLED("wgetch(%p)"), (void *) win));
|
||||
code = _nc_wgetch(win,
|
||||
&value,
|
||||
_nc_use_meta(win)
|
||||
EVENTLIST_2nd((_nc_eventlist *) 0));
|
||||
if (code != ERR)
|
||||
code = value;
|
||||
returnCode(code);
|
||||
}
|
||||
|
||||
/*
|
||||
** int
|
||||
** kgetch()
|
||||
**
|
||||
** Get an input character, but take care of keypad sequences, returning
|
||||
** an appropriate code when one matches the input. After each character
|
||||
** is received, set an alarm call based on ESCDELAY. If no more of the
|
||||
** sequence is received by the time the alarm goes off, pass through
|
||||
** the sequence gotten so far.
|
||||
**
|
||||
** This function must be called when there are no cooked keys in queue.
|
||||
** (that is head==-1 || peek==head)
|
||||
**
|
||||
*/
|
||||
|
||||
static int
|
||||
kgetch(SCREEN *sp, bool forever EVENTLIST_2nd(_nc_eventlist * evl))
|
||||
{
|
||||
TRIES *ptr;
|
||||
int ch = 0;
|
||||
int timeleft = forever ? 9999999 : GetEscdelay(sp);
|
||||
|
||||
TR(TRACE_IEVENT, ("kgetch() called"));
|
||||
|
||||
ptr = sp->_keytry;
|
||||
|
||||
for (;;) {
|
||||
if (cooked_key_in_fifo() && sp->_fifo[head] >= KEY_MIN) {
|
||||
break;
|
||||
} else if (!raw_key_in_fifo()) {
|
||||
ch = fifo_push(sp EVENTLIST_2nd(evl));
|
||||
if (ch == ERR) {
|
||||
peek = head; /* the keys stay uninterpreted */
|
||||
return ERR;
|
||||
}
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
else if (ch == KEY_EVENT) {
|
||||
peek = head; /* the keys stay uninterpreted */
|
||||
return fifo_pull(sp); /* Remove KEY_EVENT from the queue */
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
ch = fifo_peek(sp);
|
||||
if (ch >= KEY_MIN) {
|
||||
/* If not first in queue, somebody put this key there on purpose in
|
||||
* emergency. Consider it higher priority than the unfinished
|
||||
* keysequence we are parsing.
|
||||
*/
|
||||
peek = head;
|
||||
/* assume the key is the last in fifo */
|
||||
t_dec(); /* remove the key */
|
||||
return ch;
|
||||
}
|
||||
|
||||
TR(TRACE_IEVENT, ("ch: %s", _nc_tracechar(sp, (unsigned char) ch)));
|
||||
while ((ptr != NULL) && (ptr->ch != (unsigned char) ch))
|
||||
ptr = ptr->sibling;
|
||||
|
||||
if (ptr == NULL) {
|
||||
TR(TRACE_IEVENT, ("ptr is null"));
|
||||
break;
|
||||
}
|
||||
TR(TRACE_IEVENT, ("ptr=%p, ch=%d, value=%d",
|
||||
(void *) ptr, ptr->ch, ptr->value));
|
||||
|
||||
if (ptr->value != 0) { /* sequence terminated */
|
||||
TR(TRACE_IEVENT, ("end of sequence"));
|
||||
if (peek == tail) {
|
||||
fifo_clear(sp);
|
||||
} else {
|
||||
head = peek;
|
||||
}
|
||||
return (ptr->value);
|
||||
}
|
||||
|
||||
ptr = ptr->child;
|
||||
|
||||
if (!raw_key_in_fifo()) {
|
||||
int rc;
|
||||
|
||||
TR(TRACE_IEVENT, ("waiting for rest of sequence"));
|
||||
rc = check_mouse_activity(sp, timeleft EVENTLIST_2nd(evl));
|
||||
#ifdef NCURSES_WGETCH_EVENTS
|
||||
if (rc & TW_EVENT) {
|
||||
TR(TRACE_IEVENT, ("interrupted by a user event"));
|
||||
/* FIXME Should have preserved remainder timeleft for reuse... */
|
||||
peek = head; /* Restart interpreting later */
|
||||
return KEY_EVENT;
|
||||
}
|
||||
#endif
|
||||
if (!rc) {
|
||||
TR(TRACE_IEVENT, ("ran out of time"));
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
ch = fifo_pull(sp);
|
||||
peek = head;
|
||||
return ch;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue