/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.sdt.referenceprojects.test;

import org.eclipse.cdt.core.CommandLauncher;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.Path;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.util.ArrayList;

import java.util.List;

public class CodeScannerProjectTest extends StatefulTestCase implements ITestStateConstants {

	private IProject project;

	private IPath csCommand;

	private String csConfigPath;

	protected void setUp() throws Exception {

		super.setUp();

		project = (IProject) getState(PROJECT);

		assertNotNull(project);

		File codescanner = (File) getState(CODESCANNER_FILE);

		assertNotNull(codescanner);

		csCommand = new Path(codescanner.getCanonicalPath());

		File configFile = (File) getState(CODESCANNER_CONFIG_FILE);

		assertNotNull(configFile);

		csConfigPath = configFile.getCanonicalPath();

	}

	protected void tearDown() throws Exception {

		super.tearDown();

	}

	public void testScanProject() throws Exception {

        // construct the arguments...

        List<String> argList = new ArrayList<String>();

        // configuration file

       	argList.add("-c");

       	argList.add(csConfigPath);

       	// output

       	argList.add("-o"); 

       	argList.add("std");

        // project path

        String projectLocation = project.getLocation().toOSString();

		argList.add(projectLocation);

		String[] args = new String[argList.size()];

		argList.toArray(args);

        // set up command launcher class to handle calling CodeScanner and parse output

        CommandLauncher cmdLauncher = new CommandLauncher();

		cmdLauncher.execute(csCommand, args, null, new Path(projectLocation));

		ByteArrayOutputStream out = new ByteArrayOutputStream();

		ByteArrayOutputStream err = new ByteArrayOutputStream();

		int exitCode = cmdLauncher.waitAndRead(out, err);

		String stdOutStr = postProcessStdOut(out.toString());

		assertEquals("stdout: " + stdOutStr, 0, stdOutStr.length());

		assertEquals("stderr: " + err, 0, err.toString().length());

		assertEquals(0, exitCode);

	}

	private boolean isNotErrorLine(String line) {

		return line.startsWith("Note:") || line.startsWith("Scanning");

	}

	private final static String[] KNOWN_ERROR_PATTERNS = {

		".*lists_3_0ListBox.*: warning: resourcesonheap: low: codingstandards: resource objects on the heap"

	};

	private boolean isKnownAllowedError(String line) {

		for (String pattern : KNOWN_ERROR_PATTERNS) {

			if (line.matches(pattern))

				return true;

		}

		return false;

	}

	private String postProcessStdOut(String s) {

		StringBuilder result = new StringBuilder();

		String[] lines = s.split("\r\n|\r|\n");

		// ignore the first line "Nokia CodeScanner version 2.0.9"

		boolean first = true;

		for (String line : lines) {

			// ignore notes and scanning start and end lines

			if (!first && !isNotErrorLine(line) && !isKnownAllowedError(line)) {

				result.append(line);

				result.append("\n");

			}

			first = false;

		}

		return result.toString().trim();

	}		

}