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/***********************************************************************/
/* RESERVED.C - */
/* This file contains funtions related to reserved lines. */
/***********************************************************************/
/*
* THE - The Hessling Editor. A text editor similar to VM/CMS xedit.
* Copyright (C) 1991-1999 Mark Hessling
*
* 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 of
* the License, or 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.
*
*
* If you make modifications to this software that you feel increases
* it usefulness for the rest of the community, please email the
* changes, enhancements, bug fixes as well as any and all ideas to me.
* This software is going to be maintained and enhanced as deemed
* necessary by the community.
*
* Mark Hessling, M.Hessling@qut.edu.au http://www.lightlink.com/hessling/
* PO Box 203, Bellara, QLD 4507, AUSTRALIA
* Author of THE, a Free XEDIT/KEDIT editor and, Rexx/SQL
* Maintainer of PDCurses: Public Domain Curses and, Regina Rexx interpreter
* Use Rexx ? join the Rexx Language Association: http://www.rexxla.org
*/
static char RCSid[] = "$Id: reserved.c,v 1.2 2001/01/04 09:41:53 mark Exp $";
#include <the.h>
#include <proto.h>
/***********************************************************************/
#ifdef HAVE_PROTO
RESERVED *add_reserved_line(CHARTYPE *spec,CHARTYPE *line,short base,short off,COLOUR_ATTR *attr)
#else
RESERVED *add_reserved_line(spec,line,base,off,attr)
CHARTYPE *spec,*line;
short base;
short off;
COLOUR_ATTR *attr;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
RESERVED *curr=NULL;
CHARTYPE *templine=line;
/*--------------------------- processing ------------------------------*/
TRACE_FUNCTION("reserved.c:add_reserved_line");
/*---------------------------------------------------------------------*/
/* First check if the row already has a reserved line on it... */
/*---------------------------------------------------------------------*/
if ((curr = find_reserved_line(current_screen,FALSE,0,base,off)) != NULL)
delete_reserved_line(base,off);
curr = rll_add(CURRENT_FILE->first_reserved,CURRENT_FILE->first_reserved,sizeof(RESERVED));
if (CURRENT_FILE->first_reserved == NULL)
CURRENT_FILE->first_reserved = curr;
if (templine == NULL)
templine = (CHARTYPE *)"";
if ((curr->line = (CHARTYPE *)(*the_malloc)((strlen((DEFCHAR *)templine)+1)*sizeof(CHARTYPE))) == NULL)
{
display_error(30,(CHARTYPE *)"",FALSE);
TRACE_RETURN();
return(NULL);
}
if ((curr->disp = (CHARTYPE *)(*the_malloc)((strlen((DEFCHAR *)templine)+1)*sizeof(CHARTYPE))) == NULL)
{
display_error(30,(CHARTYPE *)"",FALSE);
TRACE_RETURN();
return(NULL);
}
if ((curr->spec = (CHARTYPE *)(*the_malloc)((strlen((DEFCHAR *)spec)+1)*sizeof(CHARTYPE))) == NULL)
{
display_error(30,(CHARTYPE *)"",FALSE);
TRACE_RETURN();
return(NULL);
}
if ((curr->attr = (COLOUR_ATTR *)(*the_malloc)(sizeof(COLOUR_ATTR))) == NULL)
{
display_error(30,(CHARTYPE *)"",FALSE);
TRACE_RETURN();
return(NULL);
}
strcpy((DEFCHAR *)curr->line,(DEFCHAR *)templine);
strcpy((DEFCHAR *)curr->spec,(DEFCHAR *)spec);
curr->length = strlen((DEFCHAR *)templine);
curr->base = base;
curr->off = off;
memcpy(curr->attr,attr,sizeof(COLOUR_ATTR));
parse_reserved_line(curr);
TRACE_RETURN();
return(curr);
}
/***********************************************************************/
#ifdef HAVE_PROTO
RESERVED *find_reserved_line(CHARTYPE scrno,bool find_by_row,ROWTYPE row,short base,short off)
#else
RESERVED *find_reserved_line(scrno,find_by_row,row,base,off)
CHARTYPE scrno;
bool find_by_row;
ROWTYPE row;
short base,off;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
RESERVED *curr=SCREEN_FILE(scrno)->first_reserved;
/*--------------------------- processing ------------------------------*/
TRACE_FUNCTION("reserved.c:find_reserved_line");
while(curr != NULL)
{
if (find_by_row)
{
if (curr->base == POSITION_TOP
&& row == curr->off-1)
break;
if (curr->base == POSITION_BOTTOM
&& row == (curr->off+screen[scrno].rows[WINDOW_FILEAREA]))
break;
if (curr->base == POSITION_MIDDLE
&& row == (curr->off+(screen[scrno].rows[WINDOW_FILEAREA]/2))-1)
break;
}
else
{
if (curr->base == base
&& curr->off == off)
break;
}
curr = curr->next;
}
TRACE_RETURN();
return(curr);
}
/***********************************************************************/
#ifdef HAVE_PROTO
short delete_reserved_line(short base,short off)
#else
short delete_reserved_line(base,off)
short base,off;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
RESERVED *curr=NULL;
/*--------------------------- processing ------------------------------*/
TRACE_FUNCTION("reserved.c:delete_reserved_line");
if ((curr = find_reserved_line(current_screen,FALSE,0,base,off)) == NULL)
{
display_error(64,(CHARTYPE *)"",FALSE);
TRACE_RETURN();
return(RC_NO_LINES_CHANGED);
}
if (curr->line != NULL)
(*the_free)(curr->line);
if (curr->disp != NULL)
(*the_free)(curr->disp);
if (curr->spec != NULL)
(*the_free)(curr->spec);
if (curr->attr != NULL)
(*the_free)(curr->attr);
rll_del(&CURRENT_FILE->first_reserved,NULL,curr,DIRECTION_FORWARD);
TRACE_RETURN();
return(RC_OK);
}
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