/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2015,2016 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
+ * and: Juergen Pfeifer 2009 *
****************************************************************************/
/*
#include <curses.priv.h>
-MODULE_ID("$Id: lib_getch.c,v 1.43 1999/03/08 02:35:10 tom Exp $")
+MODULE_ID("$Id: lib_getch.c,v 1.136 2016/09/10 21:59:16 tom Exp $")
#include <fifo_defs.h>
-int ESCDELAY = 1000; /* max interval betw. chars in funkeys, in millisecs */
-
-#ifdef USE_EMX_MOUSE
-# include <sys/select.h>
-static int
-kbd_mouse_read(unsigned char *p)
+#if USE_REENTRANT
+#define GetEscdelay(sp) *_nc_ptr_Escdelay(sp)
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(ESCDELAY) (void)
{
-fd_set fdset;
-int nums = SP->_ifd+1;
-
- for (;;) {
- FD_ZERO(&fdset);
- FD_SET(SP->_checkfd, &fdset);
- if (SP->_mouse_fd >= 0) {
- FD_SET(SP->_mouse_fd, &fdset);
- if (SP->_mouse_fd > SP->_checkfd)
- nums = SP->_mouse_fd+1;
- }
- if (select(nums, &fdset, NULL, NULL, NULL) >= 0) {
- int n;
-
- if (FD_ISSET(SP->_mouse_fd, &fdset)) /* Prefer mouse */
- n = read(SP->_mouse_fd, p, 1);
- else
- n = read(SP->_ifd, p, 1);
- return n;
- }
- if (errno != EINTR)
- return -1;
- }
+ return *(_nc_ptr_Escdelay(CURRENT_SCREEN));
}
-#endif /* USE_EMX_MOUSE */
-static inline int fifo_peek(void)
+NCURSES_EXPORT(int *)
+_nc_ptr_Escdelay(SCREEN *sp)
{
- int ch = SP->_fifo[peek];
- T(("peeking at %d", peek));
-
- p_inc();
- return ch;
+ return ptrEscdelay(sp);
}
+#else
+#define GetEscdelay(sp) ESCDELAY
+NCURSES_EXPORT_VAR(int) ESCDELAY = 1000;
+#endif
-
-static inline int fifo_pull(void)
+#if NCURSES_EXT_FUNCS
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(set_escdelay) (NCURSES_SP_DCLx int value)
{
-int ch;
- ch = SP->_fifo[head];
- T(("pulling %d from %d", ch, head));
+ int code = OK;
+#if USE_REENTRANT
+ if (SP_PARM) {
+ SET_ESCDELAY(value);
+ } else {
+ code = ERR;
+ }
+#else
+ (void) SP_PARM;
+ ESCDELAY = value;
+#endif
+ return code;
+}
- if (peek == head)
- {
- h_inc();
- peek = head;
- }
- else
- h_inc();
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+set_escdelay(int value)
+{
+ int code;
+#if USE_REENTRANT
+ code = NCURSES_SP_NAME(set_escdelay) (CURRENT_SCREEN, value);
+#else
+ ESCDELAY = value;
+ code = OK;
+#endif
+ return code;
+}
+#endif
+#endif /* NCURSES_EXT_FUNCS */
-#ifdef TRACE
- if (_nc_tracing & TRACE_IEVENT) _nc_fifo_dump();
+#if NCURSES_EXT_FUNCS
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(get_escdelay) (NCURSES_SP_DCL0)
+{
+#if !USE_REENTRANT
+ (void) SP_PARM;
#endif
- return ch;
+ return GetEscdelay(SP_PARM);
}
-static inline int fifo_push(void)
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+get_escdelay(void)
{
-int n;
-unsigned int ch;
+ return NCURSES_SP_NAME(get_escdelay) (CURRENT_SCREEN);
+}
+#endif
+#endif /* NCURSES_EXT_FUNCS */
- if (tail == -1) return ERR;
+static int
+_nc_use_meta(WINDOW *win)
+{
+ SCREEN *sp = _nc_screen_of(win);
+ return (sp ? sp->_use_meta : 0);
+}
-#ifdef HIDE_EINTR
-again:
- errno = 0;
+#ifdef USE_TERM_DRIVER
+# ifdef __MINGW32__
+static HANDLE
+_nc_get_handle(int fd)
+{
+ intptr_t value = _get_osfhandle(fd);
+ return (HANDLE) value;
+}
+# endif
#endif
-#if USE_GPM_SUPPORT
- if ((SP->_mouse_fd >= 0)
- && (_nc_timed_wait(3, -1, (int *)0) & 2))
- {
- SP->_mouse_event(SP);
- ch = KEY_MOUSE;
- n = 1;
- } else
-#endif
- {
- unsigned char c2=0;
-#ifdef USE_EMX_MOUSE
- n = kbd_mouse_read(&c2);
+/*
+ * Check for mouse activity, returning nonzero if we find any.
+ */
+static int
+check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
+{
+ int rc;
+
+#ifdef USE_TERM_DRIVER
+ TERMINAL_CONTROL_BLOCK *TCB = TCBOf(sp);
+ rc = TCBOf(sp)->drv->td_testmouse(TCBOf(sp), delay EVENTLIST_2nd(evl));
+# ifdef __MINGW32__
+ /* if we emulate terminfo on console, we have to use the console routine */
+ if (IsTermInfoOnConsole(sp)) {
+ HANDLE fd = _nc_get_handle(sp->_ifd);
+ rc = _nc_mingw_testmouse(sp, fd, delay EVENTLIST_2nd(evl));
+ } else
+# endif
+ rc = TCB->drv->td_testmouse(TCB, delay EVENTLIST_2nd(evl));
#else
- n = read(SP->_ifd, &c2, 1);
+#if USE_SYSMOUSE
+ if ((sp->_mouse_type == M_SYSMOUSE)
+ && (sp->_sysmouse_head < sp->_sysmouse_tail)) {
+ rc = TW_MOUSE;
+ } else
#endif
- ch = c2 & 0xff;
+ {
+ rc = _nc_timed_wait(sp,
+ TWAIT_MASK,
+ delay,
+ (int *) 0
+ EVENTLIST_2nd(evl));
+#if USE_SYSMOUSE
+ if ((sp->_mouse_type == M_SYSMOUSE)
+ && (sp->_sysmouse_head < sp->_sysmouse_tail)
+ && (rc == 0)
+ && (errno == EINTR)) {
+ rc |= TW_MOUSE;
}
-
-#ifdef HIDE_EINTR
- /*
- * Under System V curses with non-restarting signals, getch() returns
- * with value ERR when a handled signal keeps it from completing.
- * If signals restart system calls, OTOH, the signal is invisible
- * except to its handler.
- *
- * We don't want this difference to show. This piece of code
- * tries to make it look like we always have restarting signals.
- */
- if (n <= 0 && errno == EINTR)
- goto again;
#endif
+ }
+#endif
+ return rc;
+}
- if ((n == -1) || (n == 0))
- {
- T(("read(%d,&ch,1)=%d, errno=%d", SP->_ifd, n, errno));
- return ERR;
- }
- T(("read %d characters", n));
+static NCURSES_INLINE int
+fifo_peek(SCREEN *sp)
+{
+ int ch = (peek >= 0) ? sp->_fifo[peek] : ERR;
+ TR(TRACE_IEVENT, ("peeking at %d", peek));
+
+ p_inc();
+ return ch;
+}
+
+static NCURSES_INLINE int
+fifo_pull(SCREEN *sp)
+{
+ int ch = (head >= 0) ? sp->_fifo[head] : ERR;
+
+ TR(TRACE_IEVENT, ("pulling %s from %d", _nc_tracechar(sp, ch), head));
+
+ if (peek == head) {
+ h_inc();
+ peek = head;
+ } else {
+ h_inc();
+ }
- SP->_fifo[tail] = ch;
- SP->_fifohold = 0;
- if (head == -1)
- head = peek = tail;
- t_inc();
- T(("pushed %#x at %d", ch, tail));
#ifdef TRACE
- if (_nc_tracing & TRACE_IEVENT) _nc_fifo_dump();
+ if (USE_TRACEF(TRACE_IEVENT)) {
+ _nc_fifo_dump(sp);
+ _nc_unlock_global(tracef);
+ }
#endif
- return ch;
+ return ch;
}
-static inline void fifo_clear(void)
+static NCURSES_INLINE int
+fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
{
-int i;
- for (i = 0; i < FIFO_SIZE; i++)
- SP->_fifo[i] = 0;
- head = -1; tail = peek = 0;
+ int n;
+ int ch = 0;
+ int mask = 0;
+
+ (void) mask;
+ if (tail < 0)
+ return ERR;
+
+#ifdef NCURSES_WGETCH_EVENTS
+ if (evl
+#if USE_GPM_SUPPORT || USE_EMX_MOUSE || USE_SYSMOUSE
+ || (sp->_mouse_fd >= 0)
+#endif
+ ) {
+ mask = check_mouse_activity(sp, -1 EVENTLIST_2nd(evl));
+ } else
+ mask = 0;
+
+ if (mask & TW_EVENT) {
+ T(("fifo_push: ungetch KEY_EVENT"));
+ safe_ungetch(sp, KEY_EVENT);
+ return KEY_EVENT;
+ }
+#elif USE_GPM_SUPPORT || USE_EMX_MOUSE || USE_SYSMOUSE
+ if (sp->_mouse_fd >= 0) {
+ mask = check_mouse_activity(sp, -1 EVENTLIST_2nd(evl));
+ }
+#endif
+
+#if USE_GPM_SUPPORT || USE_EMX_MOUSE
+ if ((sp->_mouse_fd >= 0) && (mask & TW_MOUSE)) {
+ sp->_mouse_event(sp);
+ ch = KEY_MOUSE;
+ n = 1;
+ } else
+#endif
+#if USE_SYSMOUSE
+ if ((sp->_mouse_type == M_SYSMOUSE)
+ && (sp->_sysmouse_head < sp->_sysmouse_tail)) {
+ sp->_mouse_event(sp);
+ ch = KEY_MOUSE;
+ n = 1;
+ } else if ((sp->_mouse_type == M_SYSMOUSE)
+ && (mask <= 0) && errno == EINTR) {
+ sp->_mouse_event(sp);
+ ch = KEY_MOUSE;
+ n = 1;
+ } else
+#endif
+#ifdef USE_TERM_DRIVER
+ if ((sp->_mouse_type == M_TERM_DRIVER)
+ && (sp->_drv_mouse_head < sp->_drv_mouse_tail)) {
+ sp->_mouse_event(sp);
+ ch = KEY_MOUSE;
+ n = 1;
+ } else
+#endif
+#if USE_KLIBC_KBD
+ if (NC_ISATTY(sp->_ifd) && sp->_cbreak) {
+ ch = _read_kbd(0, 1, !sp->_raw);
+ n = (ch == -1) ? -1 : 1;
+ sp->_extended_key = (ch == 0);
+ } else
+#endif
+ { /* Can block... */
+#ifdef USE_TERM_DRIVER
+ int buf;
+#ifdef __MINGW32__
+ if (NC_ISATTY(sp->_ifd) && IsTermInfoOnConsole(sp) && sp->_cbreak)
+ n = _nc_mingw_console_read(sp,
+ _nc_get_handle(sp->_ifd),
+ &buf);
+ else
+#endif
+ n = CallDriver_1(sp, td_read, &buf);
+ ch = buf;
+#else
+ unsigned char c2 = 0;
+# if USE_PTHREADS_EINTR
+# if USE_WEAK_SYMBOLS
+ if ((pthread_self) && (pthread_kill) && (pthread_equal))
+# endif
+ _nc_globals.read_thread = pthread_self();
+# endif
+ n = (int) read(sp->_ifd, &c2, (size_t) 1);
+#if USE_PTHREADS_EINTR
+ _nc_globals.read_thread = 0;
+#endif
+ ch = c2;
+#endif
+ }
+
+ if ((n == -1) || (n == 0)) {
+ TR(TRACE_IEVENT, ("read(%d,&ch,1)=%d, errno=%d", sp->_ifd, n, errno));
+ ch = ERR;
+ }
+ TR(TRACE_IEVENT, ("read %d characters", n));
+
+ sp->_fifo[tail] = ch;
+ sp->_fifohold = 0;
+ if (head == -1)
+ head = peek = tail;
+ t_inc();
+ TR(TRACE_IEVENT, ("pushed %s at %d", _nc_tracechar(sp, ch), tail));
+#ifdef TRACE
+ if (USE_TRACEF(TRACE_IEVENT)) {
+ _nc_fifo_dump(sp);
+ _nc_unlock_global(tracef);
+ }
+#endif
+ return ch;
}
-static int kgetch(WINDOW *);
+static NCURSES_INLINE void
+fifo_clear(SCREEN *sp)
+{
+ memset(sp->_fifo, 0, sizeof(sp->_fifo));
+ head = -1;
+ tail = peek = 0;
+}
-#define wgetch_should_refresh(win) (\
- (is_wintouched(win) || (win->_flags & _HASMOVED)) \
- && !(win->_flags & _ISPAD))
+static int kgetch(SCREEN *, bool EVENTLIST_2nd(_nc_eventlist *));
-int
-wgetch(WINDOW *win)
+static void
+recur_wrefresh(WINDOW *win)
{
-int ch;
+#ifdef USE_PTHREADS
+ SCREEN *sp = _nc_screen_of(win);
+ if (_nc_use_pthreads && sp != CURRENT_SCREEN) {
+ SCREEN *save_SP;
+
+ /* temporarily switch to the window's screen to check/refresh */
+ _nc_lock_global(curses);
+ save_SP = CURRENT_SCREEN;
+ _nc_set_screen(sp);
+ recur_wrefresh(win);
+ _nc_set_screen(save_SP);
+ _nc_unlock_global(curses);
+ } else
+#endif
+ if ((is_wintouched(win) || (win->_flags & _HASMOVED))
+ && !(win->_flags & _ISPAD)) {
+ wrefresh(win);
+ }
+}
- T((T_CALLED("wgetch(%p)"), win));
+static int
+recur_wgetnstr(WINDOW *win, char *buf)
+{
+ SCREEN *sp = _nc_screen_of(win);
+ int rc;
+
+ if (sp != 0) {
+#ifdef USE_PTHREADS
+ if (_nc_use_pthreads && sp != CURRENT_SCREEN) {
+ SCREEN *save_SP;
+
+ /* temporarily switch to the window's screen to get cooked input */
+ _nc_lock_global(curses);
+ save_SP = CURRENT_SCREEN;
+ _nc_set_screen(sp);
+ rc = recur_wgetnstr(win, buf);
+ _nc_set_screen(save_SP);
+ _nc_unlock_global(curses);
+ } else
+#endif
+ {
+ sp->_called_wgetch = TRUE;
+ rc = wgetnstr(win, buf, MAXCOLUMNS);
+ sp->_called_wgetch = FALSE;
+ }
+ } else {
+ rc = ERR;
+ }
+ return rc;
+}
- if (!win)
- returnCode(ERR);
+NCURSES_EXPORT(int)
+_nc_wgetch(WINDOW *win,
+ int *result,
+ int use_meta
+ EVENTLIST_2nd(_nc_eventlist * evl))
+{
+ SCREEN *sp;
+ int ch;
+ int rc = 0;
+#ifdef NCURSES_WGETCH_EVENTS
+ int event_delay = -1;
+#endif
- if (cooked_key_in_fifo())
- {
- if (wgetch_should_refresh(win))
- wrefresh(win);
+ T((T_CALLED("_nc_wgetch(%p)"), (void *) win));
- ch = fifo_pull();
- T(("wgetch returning (pre-cooked): %#x = %s", ch, _trace_key(ch));)
- returnCode(ch);
- }
+ *result = 0;
- /*
- * 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->_raw && !SP->_cbreak)
- {
- char buf[MAXCOLUMNS], *sp;
+ sp = _nc_screen_of(win);
+ if (win == 0 || sp == 0) {
+ returnCode(ERR);
+ }
- T(("filling queue in cooked mode"));
+ 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
- wgetnstr(win, buf, MAXCOLUMNS);
+ /*
+ * 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]);
- /* ungetch in reverse order */
- ungetch('\n');
- for (sp = buf+strlen(buf); sp>buf; sp--)
- ungetch(sp[-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);
+ }
- returnCode(fifo_pull());
- }
+ if (win->_use_keypad != sp->_keypad_on)
+ _nc_keypad(sp, win->_use_keypad);
- if (wgetch_should_refresh(win))
- wrefresh(win);
+ recur_wrefresh(win);
- if (!win->_notimeout && (win->_delay >= 0 || SP->_cbreak > 1))
- {
- int delay;
+ if (win->_notimeout || (win->_delay >= 0) || (sp->_cbreak > 1)) {
+ if (head == -1) { /* fifo is empty */
+ int delay;
- T(("timed delay in wgetch()"));
- if (SP->_cbreak > 1)
- delay = (SP->_cbreak - 1) * 100;
- else
- delay = win->_delay;
+ TR(TRACE_IEVENT, ("timed delay in wgetch()"));
+ if (sp->_cbreak > 1)
+ delay = (sp->_cbreak - 1) * 100;
+ else
+ delay = win->_delay;
- T(("delay is %d milliseconds", delay));
+#ifdef NCURSES_WGETCH_EVENTS
+ if (event_delay >= 0 && delay > event_delay)
+ delay = event_delay;
+#endif
- if (head == -1) /* fifo is empty */
- if (!_nc_timed_wait(3, delay, (int *)0))
- returnCode(ERR);
- /* else go on to read data available */
- }
+ TR(TRACE_IEVENT, ("delay is %d milliseconds", delay));
- 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's 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(win);
- if (ch == KEY_MOUSE)
- {
- ++runcount;
- if (SP->_mouse_inline(SP))
- break;
- }
- } while
- (ch == KEY_MOUSE
- && (_nc_timed_wait(3, SP->_maxclick, (int *)0)
- || !SP->_mouse_parse(runcount)));
- if (runcount > 0 && ch != KEY_MOUSE)
- {
- /* mouse event sequence ended by keystroke, push it */
- ungetch(ch);
- ch = KEY_MOUSE;
- }
- } else {
- if (head == -1)
- fifo_push();
- ch = fifo_pull();
- }
+ rc = check_mouse_activity(sp, delay EVENTLIST_2nd(evl));
- if (ch == ERR)
- {
-#if USE_SIZECHANGE
- if(SP->_sig_winch)
- {
- _nc_update_screensize();
- /* resizeterm can push KEY_RESIZE */
- if(cooked_key_in_fifo())
- {
- ch = fifo_pull();
- T(("wgetch returning (pre-cooked): %#x = %s", ch, _trace_key(ch));)
- returnCode(ch);
- }
+#ifdef NCURSES_WGETCH_EVENTS
+ if (rc & TW_EVENT) {
+ *result = KEY_EVENT;
+ returnCode(KEY_CODE_YES);
}
#endif
- T(("wgetch returning ERR"));
- returnCode(ERR);
+ if (!rc) {
+ goto check_sigwinch;
+ }
}
+ /* else go on to read data available */
+ }
+ if (win->_use_keypad) {
/*
- * Simulate ICRNL mode
+ * 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's 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().
*/
- if ((ch == '\r') && SP->_nl)
- ch = '\n';
+ 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);
+ }
- /* 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 (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 && !(win->_flags & _ISPAD)) {
+ 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))
- if (!SP->_use_meta)
- ch &= 0x7f;
+ ch &= 0x7f;
- if (SP->_echo && ch < KEY_MIN && !(win->_flags & _ISPAD))
- wechochar(win, (chtype)ch);
+ T(("wgetch returning : %s", _nc_tracechar(sp, ch)));
- T(("wgetch returning : %#x = %s", ch, _trace_key(ch)));
+ *result = ch;
+ returnCode(ch >= KEY_MIN ? KEY_CODE_YES : OK);
+}
- returnCode(ch);
+#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
** sequence is received by the time the alarm goes off, pass through
** the sequence gotten so far.
**
-** This function must be called when there is no cooked keys in queue.
+** This function must be called when there are no cooked keys in queue.
** (that is head==-1 || peek==head)
**
*/
static int
-kgetch(WINDOW *win GCC_UNUSED)
+kgetch(SCREEN *sp, bool forever EVENTLIST_2nd(_nc_eventlist * evl))
{
-struct tries *ptr;
-int ch = 0;
-int timeleft = ESCDELAY;
+ 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
+ }
- TR(TRACE_IEVENT, ("kgetch(%p) called", win));
+ 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;
+ }
- ptr = SP->_keytry;
+ TR(TRACE_IEVENT, ("ch: %s", _nc_tracechar(sp, (unsigned char) ch)));
+ while ((ptr != NULL) && (ptr->ch != (unsigned char) ch))
+ ptr = ptr->sibling;
- for(;;)
- {
- if (!raw_key_in_fifo())
- {
- if(fifo_push() == ERR)
- {
- peek = head; /* the keys stay uninterpreted */
- return ERR;
- }
- }
- ch = fifo_peek();
- if (ch >= KEY_MIN)
- {
- peek = head;
- /* assume the key is the last in fifo */
- t_dec(); /* remove the key */
- return ch;
- }
-
- TR(TRACE_IEVENT, ("ch: %s", _trace_key((unsigned char)ch)));
- while ((ptr != NULL) && (ptr->ch != (unsigned char)ch))
- ptr = ptr->sibling;
-#ifdef TRACE
- if (ptr == NULL)
- {TR(TRACE_IEVENT, ("ptr is null"));}
- else
- TR(TRACE_IEVENT, ("ptr=%p, ch=%d, value=%d",
- ptr, ptr->ch, ptr->value));
-#endif /* TRACE */
-
- if (ptr == NULL)
- break;
-
- if (ptr->value != 0) { /* sequence terminated */
- TR(TRACE_IEVENT, ("end of sequence"));
- if (peek == tail)
- fifo_clear();
- else
- head = peek;
- return(ptr->value);
- }
-
- ptr = ptr->child;
-
- if (!raw_key_in_fifo())
- {
- TR(TRACE_IEVENT, ("waiting for rest of sequence"));
- if (!_nc_timed_wait(3, timeleft, &timeleft)) {
- TR(TRACE_IEVENT, ("ran out of time"));
- break;
- }
- }
+ if (ptr == NULL) {
+ TR(TRACE_IEVENT, ("ptr is null"));
+ break;
}
- ch = fifo_pull();
- peek = head;
- return ch;
+ 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;
}
projects / ncurses.git / blobdiff