/* ########################################################################
   
   xcoral.c
   
   File: xcoral.c
   Path: /home/fournigault/c/X11/xcoral-2.31/xcoral.c
   Description: 
   Created: Fri Jan 27 10:42:00 MET 1995
   Author: Lionel Fournigault
   Modified: Fri Jan 27 10:42:01 MET 1995
   Last maintained by: Lionel Fournigault
   
   RCS $Revision: 1.1 $ $State: Exp $
   
   
   ########################################################################
   
   Note: 
   
   ########################################################################
   
   Copyright (c) : Lionel Fournigault
   
   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; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   
   ######################################################################## */


#include <stdio.h>
#include <signal.h>
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <sys/param.h>

#include <ctype.h>
#include <locale.h>
#include <unistd.h>

#include "options.h"
#include "xcoral.h"
#include "parse.h"
#include "shadow.h"
#include "main_events.h"
#include "browser_init.h"
#include "warn_box.h"
#include "list_box.h"
#include "dial_box.h"
#include "fs_box.h"
#include "man_box.h"
#include "input_str.h"
#include "get_file.h"
#include "selection.h"
#include "new_window.h"
#include "tool_bar.h"

#if HAVE_STRING_H
#  include <string.h>
#  if !HAVE_BZERO
extern FCT (void, bzero, (char *dst, int len) );
extern FCT (void, bcopy, (char *src, char *dst, int len) );
#  endif
#else
#  include <strings.h>
#endif

Display		*dpy;
EdWin		*TWin [MAXWIN], *edwin; /* La table des fenetres */
XContext	EdContext; /* Pour switcher */
int no_window, display_position;

FCT (static RETSIGTYPE, contHandler, () );
FCT (static RETSIGTYPE, stopHandler, () );

extern init_smac();

/*
 **	Initialise les resources, les menus, les bouttons etc...
 **	Creer la premiere fenetre de texte et entre dans
 **	la boucle d'evenements.
 */
main ( argc, argv ) 
    int argc;
    char **argv;
{
  EdWin *CreateWindow ();
  char pathname [MAXPATHLEN + 2];
  char *msg;
  char tmp[MAXPATHLEN];
  char *xcoralrc = 0;
  extern char *ie_load_file ();
  extern void exit ();
  extern char  *getcwd();
  extern FCT(RETSIGTYPE, error_ctrl_c,(int));
  extern char *getenv ();
  extern int _startup;
  FILE *fd;
  char pp[BUFSIZ];
  
#if defined(DEBUG) && defined(sparc)
  malloc_debug(2);
  malloc_verify();
#endif
  no_window = True;
  /*
   * Ou suis-je dans quelle etagere.
   */
#if HAVE_GETCWD
  if ( getcwd ( (char *) pathname, MAXPATHLEN ) == 0 ) {
#else
  if ( getwd  ( (char *) pathname) == 0 ) {
#endif
    (void) fprintf ( stderr, "Getwd error\n" );
    (void) exit ( 1 );
  }
  (void) bzero ( (char *) TWin, MAXWIN );
  setlocale(LC_CTYPE, "");
  /*
   * Initialisation du ressource manager, connexion avec le serveur,
   * creation d'un contexte graphique pour le top et bottom shadow.
   * Calcul des options ( parametres de la commande, .Xdefaults etc... )
   */
  XrmInitialize ();		
  ParseOpenDisp ( &argc, argv );
  CreateRGC ( dpy );
  GetUserDatabase ();
  MergeOptions ();
  
  EdContext = XUniqueContext ();
  
  InitMode ();
  
  /*
   * Initialisation des ressources pour les elements Text,
   * Menus et Panel de controle.
   * Les ressources sont :
   * 	une fonte et 4 couleurs (foreground, background,
   *	top_shadow et bottom shadow ).
   */
  InitTextRes ( dpy, GetOpFont ( OP_TEXT_FONT ), GetOpColor ( OP_TEXT_FG ),
	       GetOpColor ( OP_TEXT_BG ), GetOpColor ( OP_MENU_TS ),
	       GetOpColor ( OP_MENU_BS ));
  
  InitMenusRes ( dpy, GetOpFont ( OP_MENU_FONT ), GetOpColor ( OP_MENU_FG ),
		GetOpColor ( OP_MENU_BG ), GetOpColor ( OP_MENU_TS ),
		GetOpColor ( OP_MENU_BS ));
  
  InitControlRes ( GetOpColor ( OP_CTRL_FG ), GetOpColor ( OP_CTRL_BG ),
		  GetOpColor ( OP_CTRL_TS ),  GetOpColor ( OP_CTRL_BS ));
  
  /*
   * Encore quelques initialisations.
   */
  InitEvent ();
  InitScroll ( dpy );
  InitBrowser ();
  (void) InitWarningBox ();
  (void) InitListBox ();
  (void) InitDialogBox ();
  (void) InitFsBox ();
  (void) InitManBox ();
  SetBrowserMode ( (Mode *) GetMode ("C++mode") );
  SetBrowserDir ( (char *) pathname );
  init_smac(1024, 18);
  InitIconPixmap ();
  InitSelection (dpy,GetOpColor ( OP_TEXT_FG ), GetOpColor ( OP_TEXT_BG ));
  InitToolBar(GetOpColor ( OP_MENU_BG ), GetOpColor ( OP_MENU_TS ),
	      GetOpColor ( OP_MENU_BS ));
  InitTrombinesBox ();
  InitPcmap ();

  display_position=False;
  if (getenv("XCORAL_POSITION")!=NULL)
    display_position=True;

  /* Chargement de .xcoralrc et SmacLib */
  /* On verifie d'abord l'existence de SmacLib */
  (void) sprintf(tmp,"%s/xcoralrc.lf",XCORAL_LIB_DIR);
  if (access(tmp,R_OK)==0){
    /* SmacLib Ok */
    bzero ( tmp, MAXPATHLEN );
    xcoralrc = (char *) getenv ("XCORALRC");
    if (!xcoralrc) {
      (void) sprintf ( tmp, (char *) getenv ( "HOME" ) );
      (void) strcat ( tmp, "/.xcoralrc" );
    }
    else 
      (void) strcpy ( tmp, xcoralrc );

    if (access(tmp,R_OK)!=0){
      /* pas de xcoralrc defini, ca craint */
      /* On copie celui qui est dans SmacLib */
      (void) sprintf (tmp, "cp %s/xcoralrc.lf %s/.xcoralrc\n",
		      XCORAL_LIB_DIR,(char *)getenv ("HOME"));
      system(tmp);
      (void) sprintf (tmp, (char *) getenv ("HOME"));
      (void) strcat (tmp, "/.xcoralrc");
    }
    else {
      /* On verifie que la version est correcte */
      if ((fd = fopen((char *)tmp,"r"))!=0){
	fgets(pp,8,fd);
	if (strncmp((char *)(pp+3),CURRENT_VERSION,4)!=0){
	  /* .xcoralrc ne correspond pas a la version courante. Copie */
	  (void) sprintf(pp,"%s/.xcoralrc.old",(char *)getenv ("HOME"));
	  rename (tmp,pp);
	  /* On copie celui qui est dans SmacLib */
	  (void) sprintf (tmp, "cp %s/xcoralrc.lf %s/.xcoralrc\n",
			  XCORAL_LIB_DIR,(char *)getenv ("HOME"));
	  system(tmp);
	  (void) sprintf (tmp, (char *) getenv ("HOME"));
	  (void) strcat (tmp, "/.xcoralrc");
	  (void) fprintf (stderr,"Your .xcoralrc file is obsolete so it has been moved as .xcoralrc.old\n");
	  (void) fprintf (stderr,"A new .xcoralrc file has been created in your home directory\n");
	}
      }
    }
    msg = (char *) ie_load_file ( (Text *) 0, tmp ) ;      
  }
  else {
    (void) fprintf ( stderr, "%s\n", "Warning: SmacLib not installed");    
  }
  
  chdir(pathname );
  /*
   * Le mode 'input_str'
   */
  InitInputString ();
  
  /*
   * Allons-y pour les premieres fenetres d'edition. 
   */
  edwin = 0; /* Pour etre sur */
  if (! *(argv + 1)) {
    /* pas de nom de fichier */
    if ( (edwin = CreateWindow ()) == 0 ) { 
      ( void ) fprintf ( stderr,"Create window error\n" );
      (void) exit (1);
    }
    
    SetCtrMode ( edwin -> text -> mwin, edwin -> text -> current_mode );
    (void) strcpy ( edwin -> text -> filename, (char *) GetOpFilename () );
    (void) strcpy ( edwin -> text -> current_dir, pathname );
  }
  else {
    while (*++argv) {
      EdWin * win;
      
      if (! (win  = CreateWindow ()))
	/* trop de fenetre */
	break;
      if ( ! edwin )
	edwin = win;
      SetCtrMode ( win -> text -> mwin, win -> text -> current_mode );
      (void) strcpy ( win -> text -> filename, *argv );
      (void) strcpy ( win -> text -> current_dir, pathname );
      _startup ++;
      if ( LoadFile ( win -> text, (char *) *argv, NEW ) != -1 )
	chdir(pathname);
      else
	SetDirAndFilename ( win -> text, *argv );
    }
  }
  
  /*
   * On ignore les signaux habituels, et on attrape le stop et
   * le continue (pour des raisons tordues).
   */
  (void) signal ( SIGINT, error_ctrl_c );
/* #define DEBUG */
#ifndef DEBUG
  (void) signal ( SIGQUIT, SIG_IGN );
#endif
#undef DEBUG
  /* 
   * Affichage des premieres fenetres et on attend que les Events y se
   * pointent.
   */
  {
    int i;
    
    for (i = 0; (i != MAXWIN) && TWin[i]; i += 1) {
      XMapWindow ( dpy, TWin[i]->w_frame );
      XFlush ( dpy );
    }
  }
  no_window = False;

  WaitForEvent ();
  
  /*NOTREACHED*/
}

/*
**	Name : stopHandler
**
**	Description : Attrape le signal 'stop'. S'il reste des requetes
**		ou des	evenements on ignore le signal.
**
*/
static RETSIGTYPE stopHandler ()
{
#ifdef DEBUG
  (void) fprintf ( stderr, "Stop\n" );
#endif
  (void) signal ( SIGTSTP, SIG_IGN );
  XSync ( dpy, False );
  if ( QLength ( dpy ) == 0 ) { /* On peut stopper */
    (void) signal ( SIGCONT, contHandler );
    (void) signal ( SIGTSTP, SIG_DFL );
    (void) kill ( getpid(), SIGTSTP );
  }
  else
    (void) signal ( SIGTSTP, stopHandler );
}


/*
**	Name : contHandler 
**
**	Description : Attrape le signal 'continue' pour virer tous
**		les evenements de type ButtonPress recus pendant que le
**		process etait stoppe. 
*/
static RETSIGTYPE contHandler ()
{
  XEvent event;
#ifdef DEBUG
  (void) fprintf ( stderr, "Continue\n" );
#endif
  (void) signal ( SIGCONT, SIG_IGN );
  
  XSync ( dpy, False );
  if ( QLength ( dpy ) != 0 ) 
    while ( XCheckMaskEvent ( dpy, ButtonPress, &event ));
  
  (void) signal ( SIGTSTP, stopHandler );
  (void) signal ( SIGCONT, SIG_DFL );
  (void) kill ( getpid (), SIGCONT );
  
  XFlush ( dpy ); 
}

#if HAVE_STRING_H

#if !HAVE_BZERO
#  if HAVE_MEMORY_H
#    include <memory.h>
#  endif
void bzero(dst, len)
  char *dst;
  int   len;
{
  memset((char *)dst, 0, len);
}

void bcopy(src, dst, len)
  char *src;
  char *dst;
  int   len;
{
  memmove((char *)dst, (char *)src, len);
}
#endif
#endif

#if !HAVE_STRDUP
char*
strdup(src)
  char* src;
{
  int   len;
  char* dst;

  len = strlen(src) + 1;
  dst = (char*) malloc(len);
  bcopy(src, dst, len);

  return(dst);
}
#endif