--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib-src/emacstool.c	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,498 @@
+/*
+   Copyright (C) 1986, 1988, 1990, 1991 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * For Emacs in SunView/Sun-Windows: (supported by Sun Unix v3.2 or greater)
+ * Insert a notifier filter-function to convert all useful input 
+ * to "key" sequences that emacs can understand.  See: Emacstool(1).
+ *
+ * Author: Jeff Peck, Sun Microsystems, Inc. <peck@eng.sun.com>
+ *
+ * Original Idea: Ian Batten
+ * Updated 15-Mar-88, Jeff Peck: set IN_EMACSTOOL, TERM, TERMCAP
+ * Updated 10-Sep-88, Jeff Peck: add XVIEW and JLE support
+ * Updated  8-Oct-90, Jeff Peck: add Meta-bit for Xview
+ * Updated  6-Mar-91, Jeff Peck: Hack to detect -Wt invocation
+ *	[note, TTYSW limitation means you must Click-To-Type in Openwin]
+ *	[fixed in OW3 or use local/tty.o]
+ *	for better results, this should move to using TERMSW.
+ * Updated 10-Mar-91, Jeff Peck, et al: support for TERMSW (TTERM)
+ *	allows point-to-type even in OW2
+ *
+ * 	[note: xvetool should be started with the "-nw" flag for emacs!]
+ */
+
+#ifdef XVIEW
+#include <xview/xview.h>
+#include <xview/panel.h>
+#include <xview/attr.h>
+#include <xview/tty.h>
+#include <xview/ttysw.h>		/* private defines */
+#include <xview/termsw.h>		/* -DTTERM */
+#include <xview/font.h>			/* for testing */
+#else
+#include <suntool/sunview.h>
+#include <suntool/tty.h>
+#include <suntool/ttysw.h>
+#endif XVIEW
+
+#ifdef JLE
+# include <locale.h>
+#endif JLE
+
+#include <stdio.h>
+#include <sys/file.h>
+
+#define BUFFER_SIZE 128               /* Size of all the buffers */
+
+/* define WANT_CAPS_LOCK to make f-key T1 (aka F1) behave as CapsLock */
+#define WANT_CAPS_LOCK
+#ifdef WANT_CAPS_LOCK
+int caps_lock;		/* toggle indicator for f-key T1 caps lock */
+static char *Caps = "[CAPS] ";		/* Caps Lock prefix string */
+#define CAPS_LEN 7			/* strlen (Caps) */
+#endif
+
+static char *mouse_prefix = "\030\000";	/* C-x C-@ */
+static int   m_prefix_length = 2;       /* mouse_prefix length */
+
+static char *key_prefix = "\030*";  	/* C-x *   */
+static int   k_prefix_length = 2;       /* key_prefix length */
+
+#ifdef JLE
+static char *emacs_name = "nemacs";	/* default run command */
+static char *title = "NEmacstool - ";	/* initial title */
+#else
+static char *emacs_name = "emacs";	/* default run command */
+static char *title = "Emacstool - ";	/* initial title */
+#endif JLE
+
+static char buffer[BUFFER_SIZE];	/* send to ttysw_input */
+static char *bold_name = 0;	 	/* for -bold option */
+
+Frame frame;                            /* Base frame for system */
+
+#ifndef TTERM
+#define SWTYPE TTY
+Tty tty_win;				/* Where emacs is reading */
+#else
+#define SWTYPE TERMSW
+Termsw tty_win;				/* Termsw does follow-mouse */
+#endif TTERM
+
+#ifdef XVIEW
+Xv_Window tty_view;			/* Where the events are in Xview*/
+#else
+Tty tty_view;				/* SunView place filler */
+#endif XVIEW
+
+int font_width, font_height;            /* For translating pixels to chars */
+int left_margin = 0;		/* default window -- frame offset */
+
+int console_fd = 0;		/* for debugging: setenv DEBUGEMACSTOOL */
+FILE *console;			/* for debugging: setenv DEBUGEMACSTOOL */
+
+Icon frame_icon;
+/* make an icon_image for the default frame_icon */
+static short default_image[258] = 
+{
+#include <images/terminal.icon>
+};
+mpr_static(icon_image, 64, 64, 1, default_image);
+
+/*
+ * Assign a value to a set of keys
+ */
+int
+button_value (event)
+     Event *event;
+{
+  int retval = 0;
+  /*
+   * Code up the current situation:
+   *
+   * 1 = MS_LEFT;
+   * 2 = MS_MIDDLE;
+   * 4 = MS_RIGHT;
+   * 8 = SHIFT;
+   * 16 = CONTROL;
+   * 32 = META;
+   * 64 = DOUBLE;
+   * 128 = UP;
+   */
+
+  if (MS_LEFT   == (event_id (event))) retval = 1;
+  if (MS_MIDDLE == (event_id (event))) retval = 2;
+  if (MS_RIGHT  == (event_id (event))) retval = 4;
+
+  if (event_shift_is_down (event)) retval += 8;
+  if (event_ctrl_is_down  (event)) retval += 16;
+  if (event_meta_is_down  (event)) retval += 32;
+  if (event_is_up         (event)) retval += 128;
+  return retval;
+}
+
+/*
+ *  Variables to store the time of the previous mouse event that was
+ *  sent to emacs.
+ *
+ *  The theory is that to time double clicks while ignoreing UP buttons,
+ *  we must keep track of the accumulated time.
+ *
+ *  If someone writes a SUN-SET-INPUT-MASK for emacstool,
+ *  That could be used to selectively disable UP events, 
+ *  and then this cruft wouldn't be necessary.
+ */
+static long prev_event_sec = 0;
+static long prev_event_usec = 0;
+
+/*
+ *  Give the time difference in milliseconds, where one second
+ *  is considered infinite.
+ */
+int
+time_delta (now_sec, now_usec, prev_sec, prev_usec)
+     long now_sec, now_usec, prev_sec, prev_usec;
+{
+  long sec_delta = now_sec - prev_sec;
+  long usec_delta = now_usec - prev_usec;
+  
+  if (usec_delta < 0) {		/* "borrow" a second */
+    usec_delta += 1000000;
+    --sec_delta;
+  }
+  
+  if (sec_delta >= 10) 
+    return (9999);		/* Infinity */
+  else
+    return ((sec_delta * 1000) + (usec_delta / 1000));
+}
+
+
+/*
+ * Filter function to translate selected input events for emacs
+ * Mouse button events become ^X^@(button x-col y-line time-delta) .
+ * Function keys: ESC-*{c}{lrt} l,r,t for Left, Right, Top; 
+ * {c} encodes the keynumber as a character [a-o]
+ */
+static Notify_value
+input_event_filter_function (window, event, arg, type)
+#ifdef XVIEW
+     Xv_Window window;
+#else
+     Window window;
+#endif XVIEW
+     Event *event;
+     Notify_arg arg;
+     Notify_event_type type;
+{
+  struct timeval time_stamp;
+
+  if (console_fd) fprintf(console, "Event: %d\n", event_id(event));
+
+  /* UP L1 is the STOP key */
+  if (event_id(event) == WIN_STOP) {
+    ttysw_input(tty_win, "\007\007\007\007\007\007\007", 7);
+    return NOTIFY_IGNORED;
+  }
+
+  /* UP L5 & L7 is Expose & Open, let them pass to sunview */
+  if (event_id(event) == KEY_LEFT(5) || event_id(event) == KEY_LEFT(7))
+    if(event_is_up (event)) 
+      return notify_next_event_func (window, event, arg, type);
+    else return NOTIFY_IGNORED;
+
+  if (event_is_button (event)) { 	      /* do Mouse Button events */
+/* Commented out so that we send mouse up events too.
+   if (event_is_up (event)) 
+      return notify_next_event_func (window, event, arg, type);
+*/
+    time_stamp = event_time (event);
+    ttysw_input (tty_win, mouse_prefix, m_prefix_length);
+    sprintf (buffer, "(%d %d %d %d)\015", 
+	     button_value (event),
+	     (event_x (event) - left_margin) / font_width,
+	     event_y (event) / font_height,
+	     time_delta (time_stamp.tv_sec, time_stamp.tv_usec,
+			 prev_event_sec, prev_event_usec)
+	     );
+    ttysw_input (tty_win, buffer, strlen(buffer));
+    prev_event_sec = time_stamp.tv_sec;
+    prev_event_usec = time_stamp.tv_usec;
+    return NOTIFY_IGNORED;
+  }
+  
+  { /* Do the function key events */
+    int d;
+    char c = (char) 0;
+    if ((event_is_key_left  (event)) ?
+	((d = event_id(event) - KEY_LEFT(1)   + 'a'), c='l') : 
+	((event_is_key_right (event)) ?
+	 ((d = event_id(event) - KEY_RIGHT(1) + 'a'), c='r') : 
+	 ((event_is_key_top   (event)) ?
+	  ((d = event_id(event) - KEY_TOP(1)  + 'a'), c='t') : 0)))
+      {
+	if (event_is_up(event)) return NOTIFY_IGNORED;
+	if (event_shift_is_down (event)) c = c -  32;
+	/* this will give a non-{lrt} for unshifted keys */
+	if (event_ctrl_is_down  (event)) c = c -  64;
+	if (event_meta_is_down  (event)) c = c + 128;
+#ifdef WANT_CAPS_LOCK
+/* set a toggle and relabel window so T1 can act like caps-lock */
+	if (event_id(event) == KEY_TOP(1)) 
+	  {
+	    /* make a frame label with and without CAPS */
+	    strcpy (buffer, Caps); 
+	    title = &buffer[CAPS_LEN];
+	    strncpy (title, (char *)window_get (frame, FRAME_LABEL),
+		     BUFFER_SIZE - CAPS_LEN);
+	    buffer[BUFFER_SIZE] = (char) 0;	
+	    if (strncmp (title, Caps, CAPS_LEN) == 0)
+	      title += CAPS_LEN; 		 /* already Caps */
+	    caps_lock =  (caps_lock ? 0 : CAPS_LEN);
+	    window_set(frame, FRAME_LABEL, (title -= caps_lock), 0);
+	    return NOTIFY_IGNORED;
+	  }
+#endif
+	ttysw_input (tty_win, key_prefix, k_prefix_length);
+	sprintf (buffer, "%c%c", d, c);
+	ttysw_input(tty_win, buffer, strlen(buffer));
+
+	return NOTIFY_IGNORED;
+      }
+  }
+  if ((event_is_ascii(event) || event_is_meta(event)) 
+      && event_is_up(event)) return NOTIFY_IGNORED;
+#ifdef WANT_CAPS_LOCK
+/* shift alpha chars to upper case if toggle is set */
+  if ((caps_lock) && event_is_ascii(event)
+      && (event_id(event) >= 'a') && (event_id(event) <= 'z'))
+    event_set_id(event, (event_id(event) - 32));
+/* crufty, but it works for now. is there an UPCASE(event)? */
+#endif
+#ifndef NO_META_BIT
+/* under Openwindows/X, the meta bit is not set in the key event,
+ * emacs expects this so we add it in here:
+ */
+  if (event_is_ascii(event) && event_meta_is_down(event))
+    event_set_id(event, 128 | event_id(event));
+#endif
+  return notify_next_event_func (window, event, arg, type);
+}
+
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int error_code;	/* Error codes */
+  
+#ifdef JLE
+  setlocale(LC_ALL, "");
+#endif JLE
+
+  if(getenv("DEBUGEMACSTOOL"))
+    console = fdopen (console_fd = open("/dev/console",O_WRONLY), "w");
+
+  putenv("IN_EMACSTOOL=t");	/* notify subprocess that it is in emacstool */
+
+  if (putenv("TERM=sun") != 0)	/* TTY_WIN will be a TERM=sun window */
+    {fprintf (stderr, "%s: Could not set TERM=sun, using `%s'\n",
+	     argv[0], (char *)getenv("TERM")) ;};
+  /*
+   * If TERMCAP starts with a slash, it is the pathname of the
+   * termcap file, not an entry extracted from it, so KEEP it!
+   * Otherwise, it may not relate to the new TERM, so Nuke-It.
+   * If there is no TERMCAP environment variable, don't make one.
+   */
+  {
+    char *termcap ;	/* Current TERMCAP value */
+    termcap = (char *)getenv("TERMCAP") ;
+    if (termcap && (*termcap != '/'))
+      {
+	if (putenv("TERMCAP=") != 0)
+	  {fprintf (stderr, "%s: Could not clear TERMCAP\n", argv[0]) ;} ;
+      } ;
+  } ;
+  
+  /* find command to run as subprocess in window */
+  if (!(argv[0] = (char *)getenv("EMACSTOOL")))	/*  Set emacs command name */
+      argv[0] = emacs_name;			
+  /* Emacstool recognizes two special args: -rc <file> and -bold <bold-name> */
+  for (argc = 1; argv[argc]; argc++)		/* Use last one on line */
+    {
+      if(!(strcmp ("-rc", argv[argc])))		/* Override if -rc given */
+	{int i = argc;
+	 argv[argc--]=0;		/* kill the -rc argument */
+	 if (argv[i+1]) {	/* move to argv[0] and squeeze the rest */
+	   argv[0]=argv[i+1];
+	   for (; argv[i+2]; (argv[i]=argv[i+2],argv[++i]=0));
+	 }
+       }
+
+      if (!(strcmp ("-bold", argv[argc]))) 
+	  {int i = argc;
+	   argv[argc--]=0;		/* kill the -bold argument */
+	   if (argv[i+1]) {	/* move to bold_name and squeeze the rest */
+	       bold_name = argv[i+1];
+	       for (; argv[i+2]; (argv[i]=argv[i+2],argv[++i]=0));
+	   }
+       }
+  };
+
+  strcpy (buffer, title);
+  strncat (buffer, argv[0],		 /* append run command name */
+	   (BUFFER_SIZE - (strlen (buffer)) - (strlen (argv[0]))) - 1);
+
+  error_code = interpose_on_window(argc,argv);
+  if (error_code != 0) {		/* Barf */
+      fprintf (stderr, "notify_interpose_event_func returns %d.\n", error_code);
+      exit (1);
+  }
+
+#ifdef XVIEW
+  xv_main_loop (frame);                  /* And away we go */
+#else
+  window_main_loop (frame);
+#endif XVIEW
+}
+
+#ifdef XVIEW
+int interpose_on_window(argc,argv)
+    int argc;
+    char **argv;
+{
+#ifndef TTERM
+    int i, font_width_adjust = 1; /* hackery, and hueristics */
+    /* if -Wt is not supplied, then font comes out as lucida-14 (width=8)
+     * rather than the screen.r.12 (width=7) typically used
+     * this hack attempts to workaround it.
+     * could use a env var EMACSTOOL_DEFAULT_FONT_WIDTH instead */
+    for (i = 1; argv[i]; i++) {
+	if (!(strcmp ("-Wt", argv[i])))
+	    {font_width_adjust = 0;
+	     if (console_fd) fprintf(console, "-Wt = %d\n", font_width_adjust);
+	     break;}
+    }
+#endif TTERM
+    /* initialize Xview, and strip window args */
+    xv_init(XV_INIT_ARGC_PTR_ARGV, &argc, argv, 0);
+
+    /* do this first, so arglist can override it */
+    frame_icon = icon_create (ICON_LABEL, "Emacstool",
+			      ICON_IMAGE, &icon_image,
+			      0);
+
+    /* Build a frame to run in */
+    frame = xv_create ((Xv_Window)NULL, FRAME,
+		       FRAME_LABEL, buffer,
+		       FRAME_ICON, frame_icon,
+		       0);
+
+    /* Create a tty with emacs in it */
+    tty_win = xv_create (frame, SWTYPE, WIN_IS_CLIENT_PANE,
+			 TTY_QUIT_ON_CHILD_DEATH, TRUE, 
+			 TTY_BOLDSTYLE, TTYSW_BOLD_INVERT,
+			 TTY_ARGV, argv, 
+			 0);
+
+    if (bold_name) {
+	(void)xv_set(tty_win, TTY_BOLDSTYLE_NAME, bold_name, 0);
+    }
+
+    {
+	Xv_font font;		/* declare temp font variable */
+	font = (Xv_font)xv_get (tty_win, XV_FONT);
+	font_height = (int)xv_get (font, FONT_DEFAULT_CHAR_HEIGHT);
+	font_width  = (int)xv_get (font, FONT_DEFAULT_CHAR_WIDTH);
+    }
+    if (console_fd) fprintf(console, "Width = %d\n", font_width);
+
+#ifndef TTERM
+    font_width -= font_width_adjust; /* A guess! font bug in ttysw*/
+#else
+    /* make the termsw act as a tty */
+    xv_set(tty_win, TERMSW_MODE, TTYSW_MODE_TYPE, 0);
+    /* termsw has variable offset depending on scrollbar size/location */
+    left_margin = (int)xv_get (tty_win, TEXTSW_LEFT_MARGIN);
+#endif TTERM
+
+    tty_view = (Xv_Window) xv_get (tty_win, OPENWIN_NTH_VIEW, 0);
+    xv_set(tty_view,
+	   WIN_CONSUME_EVENTS, 
+	   WIN_MOUSE_BUTTONS, WIN_UP_EVENTS,
+	   ACTION_ADJUST, ACTION_MENU,
+	   WIN_ASCII_EVENTS, 
+	   WIN_LEFT_KEYS, WIN_TOP_KEYS, WIN_RIGHT_KEYS,
+	   0,
+	   0);
+    /* Interpose my event function */
+    return (int) notify_interpose_event_func 
+	(tty_view, input_event_filter_function, NOTIFY_SAFE);
+}
+#else
+int interpose_on_window (argc, argv)
+ int argc;
+ char **argv;
+{
+    /* do this first, so arglist can override it */
+    frame_icon = icon_create (ICON_LABEL, "Emacstool",
+			      ICON_IMAGE, &icon_image,
+			      0);
+
+    /* Build a frame to run in */
+    frame = window_create ((Window)NULL, FRAME,
+			   FRAME_LABEL, buffer,
+			   FRAME_ICON, frame_icon,
+			   FRAME_ARGC_PTR_ARGV, &argc, argv,
+			   0);
+
+    /* Create a tty with emacs in it */
+    tty_win = window_create (frame, TTY, 
+			     TTY_QUIT_ON_CHILD_DEATH, TRUE, 
+			     TTY_BOLDSTYLE, TTYSW_BOLD_INVERT,
+			     TTY_ARGV, argv, 
+			     0);
+
+    if (bold_name) {
+	(void)window_set(tty_win, TTY_BOLDSTYLE_NAME, bold_name, 0);
+    }
+
+    /* ttysw uses pf_default, one must set WIN_FONT explicitly */
+                       window_set (tty_win, WIN_FONT, pf_default(), 0);
+    font_height = (int)window_get (tty_win, WIN_ROW_HEIGHT);
+    font_width  = (int)window_get (tty_win, WIN_COLUMN_WIDTH);
+
+    tty_view = tty_win;
+    window_set(tty_view,
+	       WIN_CONSUME_PICK_EVENTS, 
+	       WIN_STOP,
+	       WIN_MOUSE_BUTTONS, WIN_UP_EVENTS,
+	       /* LOC_WINENTER, LOC_WINEXIT, LOC_MOVE, */
+	       0,
+	       WIN_CONSUME_KBD_EVENTS, 
+	       WIN_STOP,
+	       WIN_ASCII_EVENTS, 
+	       WIN_LEFT_KEYS, WIN_TOP_KEYS, WIN_RIGHT_KEYS,
+	       /* WIN_UP_ASCII_EVENTS, */
+	       0,
+	       0);
+    /* Interpose my event function */
+    return (int) notify_interpose_event_func 
+	(tty_view, input_event_filter_function, NOTIFY_SAFE);
+}
+#endif XVIEW