/*
 *	aegis - project change supervisor
 *	Copyright (C) 1999 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 project_files
 */

#include <change.h>
#include <change/env_set.h>
#include <error.h> /* for assert */
#include <os.h>
#include <project_hist.h>
#include <sub.h>
#include <trace.h>
#include <user.h>


void
change_run_project_file_command(cp, up)
	change_ty	*cp;
	user_ty		*up;
{
	sub_context_ty	*scp;
	cstate		cstate_data;
	pconf		pconf_data;
	string_ty	*the_command;
	string_ty	*dd;

	/*
	 * make sure are sync'ed with project
	 */
	trace(("change_run_project_file_command(cp = %8.8lX)\n{\n"/*}*/, cp));
	assert(cp->reference_count >= 1);
	cstate_data = change_cstate_get(cp);
	if
	(
		cstate_data->project_file_command_sync
	==
		project_last_change_integrated(cp->pp)
	)
		goto done;
	cstate_data->project_file_command_sync =
		project_last_change_integrated(cp->pp);

	/*
	 * make sure there is a project_file command
	 */
	pconf_data = change_pconf_get(cp, 0);
	if (!pconf_data->project_file_command)
		goto done;

	/*
	 * All of the substitutions described in aesub(5) are available.
	 */
	scp = sub_context_new();
	sub_var_set_charstar(scp, "1", "${project}");
	sub_var_set_charstar(scp, "2", "${change}");
	sub_var_set_charstar(scp, "3", "${version}");
	sub_var_set_charstar(scp, "4", "${baseline}");
	the_command = pconf_data->project_file_command;
	the_command = substitute(scp,cp, the_command);
	sub_context_delete(scp);

	/*
	 * execute the command
	 */
	dd = change_development_directory_get(cp, 0);
	change_env_set(cp, 0);
	user_become(up);
	os_execute(the_command, OS_EXEC_FLAG_NO_INPUT | OS_EXEC_FLAG_ERROK, dd);
	user_become_undo();
	str_free(the_command);

	/*
	 * here for all exits
	 */
	done:
	trace((/*{*/"}\n"));
}