ncurses 5.9 - patch 20111022
[ncurses.git] / ncurses / base / lib_getch.c
index ccfcc33656df68410e60deb7775c90738ebdadef..7ee9e794a93c5989ad085e95512aec4fd277973c 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2010,2011 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            *
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_getch.c,v 1.104 2009/07/04 20:41:13 tom Exp $")
+MODULE_ID("$Id: lib_getch.c,v 1.122 2011/10/22 16:34:50 tom Exp $")
 
 #include <fifo_defs.h>
 
 #if USE_REENTRANT
 #define GetEscdelay(sp) *_nc_ptr_Escdelay(sp)
-NCURSES_EXPORT(int *)
-_nc_ptr_Escdelay(SCREEN *sp)
-{
-    return ptrEscdelay(sp);
-}
 NCURSES_EXPORT(int)
 NCURSES_PUBLIC_VAR(ESCDELAY) (void)
 {
     return *(_nc_ptr_Escdelay(CURRENT_SCREEN));
 }
+
+NCURSES_EXPORT(int *)
+_nc_ptr_Escdelay(SCREEN *sp)
+{
+    return ptrEscdelay(sp);
+}
 #else
 #define GetEscdelay(sp) ESCDELAY
-NCURSES_EXPORT_VAR (int)
-  ESCDELAY = 1000;             /* max interval betw. chars in funkeys, in millisecs */
+NCURSES_EXPORT_VAR(int) ESCDELAY = 1000;
 #endif
 
 #if NCURSES_EXT_FUNCS
@@ -110,9 +110,9 @@ NCURSES_SP_NAME(get_escdelay) (NCURSES_SP_DCL0)
 
 #if NCURSES_SP_FUNCS
 NCURSES_EXPORT(int)
-get_escdelay (void)
+get_escdelay(void)
 {
-    return NCURSES_SP_NAME(get_escdelay)(CURRENT_SCREEN);
+    return NCURSES_SP_NAME(get_escdelay) (CURRENT_SCREEN);
 }
 #endif
 #endif /* NCURSES_EXT_FUNCS */
@@ -124,12 +124,6 @@ _nc_use_meta(WINDOW *win)
     return (sp ? sp->_use_meta : 0);
 }
 
-#ifdef NCURSES_WGETCH_EVENTS
-#define TWAIT_MASK (TW_ANY | TW_EVENT)
-#else
-#define TWAIT_MASK TW_ANY
-#endif
-
 /*
  * Check for mouse activity, returning nonzero if we find any.
  */
@@ -138,31 +132,29 @@ check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
 {
     int rc;
 
+#ifdef USE_TERM_DRIVER
+    rc = TCBOf(sp)->drv->testmouse(TCBOf(sp), delay);
+#else
 #if USE_SYSMOUSE
     if ((sp->_mouse_type == M_SYSMOUSE)
        && (sp->_sysmouse_head < sp->_sysmouse_tail)) {
-       return TW_MOUSE;
-    }
-#endif
-#ifdef USE_TERM_DRIVER
-    rc = TCBOf(sp)->drv->twait(TCBOf(sp),
-                              TWAIT_MASK,
-                              delay,
-                              (int *) 0
-                              EVENTLIST_2nd(evl));
-#else
-    rc = _nc_timed_wait(sp,
-                       TWAIT_MASK,
-                       delay,
-                       (int *) 0
-                       EVENTLIST_2nd(evl));
+       rc = TW_MOUSE;
+    } else
 #endif
+    {
+       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;
+       if ((sp->_mouse_type == M_SYSMOUSE)
+           && (sp->_sysmouse_head < sp->_sysmouse_tail)
+           && (rc == 0)
+           && (errno == EINTR)) {
+           rc |= TW_MOUSE;
+       }
+#endif
     }
 #endif
     return rc;
@@ -256,6 +248,14 @@ fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
        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
     {                          /* Can block... */
 #ifdef USE_TERM_DRIVER
@@ -264,7 +264,16 @@ fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
        ch = buf;
 #else
        unsigned char c2 = 0;
-       n = read(sp->_ifd, &c2, 1);
+# 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
     }
@@ -279,7 +288,11 @@ fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
      * 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)
+    if (n <= 0 && errno == EINTR
+# if USE_PTHREADS_EINTR
+       && (_nc_globals.have_sigwinch == 0)
+# endif
+       )
        goto again;
 #endif
 
@@ -370,17 +383,18 @@ recur_wgetnstr(WINDOW *win, char *buf)
 
 NCURSES_EXPORT(int)
 _nc_wgetch(WINDOW *win,
-          unsigned long *result,
+          int *result,
           int use_meta
           EVENTLIST_2nd(_nc_eventlist * evl))
 {
     SCREEN *sp;
     int ch;
+    int rc = 0;
 #ifdef NCURSES_WGETCH_EVENTS
     long event_delay = -1;
 #endif
 
-    T((T_CALLED("_nc_wgetch(%p)"), win));
+    T((T_CALLED("_nc_wgetch(%p)"), (void *) win));
 
     *result = 0;
 
@@ -411,17 +425,18 @@ _nc_wgetch(WINDOW *win,
        !sp->_cbreak &&
        !sp->_called_wgetch) {
        char buf[MAXCOLUMNS], *bufp;
-       int rc;
 
        TR(TRACE_IEVENT, ("filling queue in cooked mode"));
 
-       rc = recur_wgetnstr(win, buf);
-
        /* ungetch in reverse order */
 #ifdef NCURSES_WGETCH_EVENTS
+       rc = recur_wgetnstr(win, buf);
        if (rc != KEY_EVENT)
-#endif
            safe_ungetch(sp, '\n');
+#else
+       (void) recur_wgetnstr(win, buf);
+       safe_ungetch(sp, '\n');
+#endif
        for (bufp = buf + strlen(buf); bufp > buf; bufp--)
            safe_ungetch(sp, bufp[-1]);
 
@@ -443,7 +458,6 @@ _nc_wgetch(WINDOW *win,
     if (win->_notimeout || (win->_delay >= 0) || (sp->_cbreak > 1)) {
        if (head == -1) {       /* fifo is empty */
            int delay;
-           int rc;
 
            TR(TRACE_IEVENT, ("timed delay in wgetch()"));
            if (sp->_cbreak > 1)
@@ -467,7 +481,7 @@ _nc_wgetch(WINDOW *win,
            }
 #endif
            if (!rc) {
-               returnCode(ERR);
+               goto check_sigwinch;
            }
        }
        /* else go on to read data available */
@@ -486,7 +500,6 @@ _nc_wgetch(WINDOW *win,
         * increase the wait with mouseinterval().
         */
        int runcount = 0;
-       int rc = 0;
 
        do {
            ch = kgetch(sp EVENTLIST_2nd(evl));
@@ -529,12 +542,19 @@ _nc_wgetch(WINDOW *win,
     }
 
     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);
            }
        }
@@ -561,7 +581,7 @@ _nc_wgetch(WINDOW *win,
      * cursor to the left.
      */
     if (sp->_echo && !(win->_flags & _ISPAD)) {
-       chtype backup = (ch == KEY_BACKSPACE) ? '\b' : ch;
+       chtype backup = (chtype) ((ch == KEY_BACKSPACE) ? '\b' : ch);
        if (backup < KEY_MIN)
            wechochar(win, backup);
     }
@@ -592,7 +612,7 @@ NCURSES_EXPORT(int)
 wgetch_events(WINDOW *win, _nc_eventlist * evl)
 {
     int code;
-    unsigned long value;
+    int value;
 
     T((T_CALLED("wgetch_events(%p,%p)"), win, evl));
     code = _nc_wgetch(win,
@@ -609,9 +629,9 @@ NCURSES_EXPORT(int)
 wgetch(WINDOW *win)
 {
     int code;
-    unsigned long value;
+    int value;
 
-    T((T_CALLED("wgetch(%p)"), win));
+    T((T_CALLED("wgetch(%p)"), (void *) win));
     code = _nc_wgetch(win,
                      &value,
                      _nc_use_meta(win)
@@ -685,7 +705,7 @@ kgetch(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
            break;
        }
        TR(TRACE_IEVENT, ("ptr=%p, ch=%d, value=%d",
-                         ptr, ptr->ch, ptr->value));
+                         (void *) ptr, ptr->ch, ptr->value));
 
        if (ptr->value != 0) {  /* sequence terminated */
            TR(TRACE_IEVENT, ("end of sequence"));