/*
 *	aegis - project change supervisor
 *	Copyright (C) 1999, 2002, 2003 Peter Miller;
 *	All rights reserved.
 *
 *	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
 *	(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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 * MANIFEST: functions to manipulate existings
 */

#include <change.h>
#include <error.h> /* for assert */
#include <project.h>
#include <sub.h>
#include <trace.h>


void
change_bind_existing(change_ty *cp)
{
    change_ty       *pcp;
    cstate_ty       *pcsp;
    cstate_branch_change_list_ty *lp;
    size_t          j;

    /*
     * verify the change number given on the command line
     */
    trace(("change_bind_existing(cp = %08lX)\n{\n", (long)cp));
    assert(cp->reference_count >= 1);
    if (cp->number == TRUNK_CHANGE_NUMBER)
    {
	trace(("}\n"));
	return;
    }
    pcp = project_change_get(cp->pp);
    pcsp = change_cstate_get(pcp);
    if (!pcsp->branch)
    {
	assert(0);
	pcsp->branch = cstate_branch_type.alloc();
    }
    if (!pcsp->branch->change)
	pcsp->branch->change = cstate_branch_change_list_type.alloc();
    lp = pcsp->branch->change;
    for (j = 0; j < lp->length; ++j)
    {
	if (lp->list[j] == cp->number)
    	    break;
    }
    if (j >= lp->length)
	change_fatal(cp, 0, i18n("unknown change"));
    trace(("}\n"));
}
