/*
 *	aegis - project change supervisor
 *	Copyright (C) 1999, 2001 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 up_to_dates
 */

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


int
change_file_up_to_date(pp, c_src_data)
	project_ty	*pp;
	fstate_src	c_src_data;
{
	fstate_src	p_src_data;
	int		result;

	/*
	 * No edit origin implies a new file, and is always
	 * up-to-date.
	 */
	trace(("change_file_up_to_date(pp = %08lX)\n{\n"/*}*/, (long)pp));
	trace(("filename = \"%s\";\n", c_src_data->file_name->str_text));
	assert(!c_src_data->edit || c_src_data->edit->revision);
	assert(!c_src_data->edit_origin || c_src_data->edit_origin->revision);
	if (!c_src_data->edit_origin)
	{
		trace(("return 1;\n"));
		trace((/*{*/"}\n"));
		return 1;
	}

	/*
	 * Look for the file in the project.  If it is not there, it
	 * implies a new file, which is always up-to-date.
	 */
	p_src_data = project_file_find(pp, c_src_data->file_name);
	if
	(
		!p_src_data
	||
		p_src_data->deleted_by
	||
		p_src_data->about_to_be_created_by
	||
		p_src_data->about_to_be_copied_by
	||
		!p_src_data->edit
	)
	{
		trace(("return 1;\n"));
		trace((/*{*/"}\n"));
		return 1;
	}

	/*
	 * The file is out-of-date if the edit number of the file in the
	 * project is not the same as the edit number of the file when
	 * originally copied from the project.
	 *
	 * p_src_data->edit
	 *	The head revision of the branch.
	 * p_src_data->edit_origin
	 *	The version originally copied.
	 *
	 * c_src_data->edit
	 *	Not meaningful until after integrate pass.
	 * c_src_data->edit_origin
	 *	The version originally copied.
	 * c_src_data->edit_origin_new
	 *	Updates branch edit_origin on integrate pass.
	 */
	assert(p_src_data->edit);
	assert(p_src_data->edit->revision);
	assert(c_src_data->edit_origin);
	assert(c_src_data->edit_origin->revision);
	result =
		str_equal
		(
			p_src_data->edit->revision,
			c_src_data->edit_origin->revision
		);
	trace(("return %d;\n", result));
	trace((/*{*/"}\n"));
	return result;
}