--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tracesrv/tracecompiler/src/com.nokia.tracecompiler/src/com/nokia/tracecompiler/file/FileUtils.java	Fri Oct 08 14:56:39 2010 +0300
@@ -0,0 +1,218 @@
+/*
+* Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:
+*
+* File utility functions
+*
+*/
+package com.nokia.tracecompiler.file;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import com.nokia.tracecompiler.source.SourceConstants;
+
+/**
+ * File utility functions
+ * 
+ */
+public final class FileUtils {
+
+	/**
+	 * File copy buffer size
+	 */
+	private static final int COPY_BUFFER_SIZE = 4096; // CodForChk_Dis_Magic
+
+	/**
+	 * cpp extension
+	 */
+	public final static String CPP_EXTENSION = "cpp"; //$NON-NLS-1$	
+
+	/**
+	 * c extension
+	 */
+	public final static String C_EXTENSION = "c"; //$NON-NLS-1$	
+
+	/**
+	 * Allowed files
+	 */
+	private final static String[] FILE_FILTERS = { ".cpp", //$NON-NLS-1$
+			".c", //$NON-NLS-1$
+			".inl", //$NON-NLS-1$
+			".h" //$NON-NLS-1$
+	};
+
+	/**
+	 * MMP file extension
+	 */
+	public static final String MMP = ".mmp"; //$NON-NLS-1$
+
+	/**
+	 * number of times trying to create a directy(ies)
+	 */
+	private static final int MAX_DIRECTORY_CREATION_TRIES = 5;
+	
+	/**
+	 * Time to sleep between tries to create a directory(ies)
+	 */
+	private static final int SLEEP_TIME_BETWEEN_DIRECTORY_CREATION_TRIES = 100;
+
+	
+	/**
+	 * Creates a file output stream. This creates directories and overwriting
+	 * possible read-only flag
+	 * 
+	 * @param file
+	 *            the file
+	 * @return the file output stream
+	 * @throws FileNotFoundException
+	 *             if file cannot be created
+	 */
+	public static OutputStream createOutputStream(File file)
+			throws FileNotFoundException {
+		File parent = file.getParentFile();
+		if (!parent.exists()) {
+			createDirectories(parent);
+		}
+		FileOutputStream fos;
+		try {
+			fos = new FileOutputStream(file);
+		} catch (IOException e) {
+			if (file.exists()) {
+				file.delete();
+			}
+			fos = new FileOutputStream(file);
+		}
+		return new BufferedOutputStream(fos);
+	}
+
+	/**
+	 * Creates a copy of a file
+	 * 
+	 * @param source
+	 *            the source file
+	 * @param target
+	 *            the target file
+	 * @return true if written successfully
+	 */
+	public static boolean copyFile(File source, File target) {
+		boolean backup = true;
+		try {
+			byte[] buf = new byte[COPY_BUFFER_SIZE];
+			FileInputStream fis = new FileInputStream(source);
+			OutputStream fos = createOutputStream(target);
+			int len;
+			do {
+				len = fis.read(buf);
+				if (len > 0) {
+					fos.write(buf, 0, len);
+				}
+			} while (len > 0);
+			fis.close();
+			fos.close();
+		} catch (Exception e) {
+			backup = false;
+		}
+		return backup;
+	}
+
+	/**
+	 * Converts file separator characters
+	 * 
+	 * @param separator
+	 *            separator to be used
+	 * @param path
+	 *            string to be converted
+	 * @param addLast
+	 *            true if the converted string should end with a separator
+	 * @return the converted string
+	 */
+	public static String convertSeparators(char separator, String path,
+			boolean addLast) {
+		path = path.replace(SourceConstants.FORWARD_SLASH_CHAR, separator);
+		path = path.replace(SourceConstants.BACKSLASH_CHAR, separator);
+		String sepStr = String.valueOf(separator);
+		if (addLast && !path.endsWith(sepStr)) {
+			path += separator;
+		} else if (!addLast && path.endsWith(sepStr)) {
+			path = path.substring(0, path.length() - 1);
+		}
+		return path;
+	}
+
+	/**
+	 * Checks if given file is allowed to be opened into TraceCompiler
+	 * 
+	 * @param fileName
+	 *            the file to be checked
+	 * @return true if filtered, false if not
+	 */
+	public static boolean isFileAllowed(String fileName) {
+		boolean allowed = false;
+		fileName = fileName.toLowerCase();
+		for (String filter : FILE_FILTERS) {
+			if (fileName.endsWith(filter)) {
+				allowed = true;
+				break;
+			}
+		}
+		return allowed;
+	}
+
+	/**
+	 * Create directories safely in a multiple instances case
+	 * @param path
+	 * @param access
+	 * @return boolean pass/fail
+	 */
+	public static boolean createDirectories(File path) {
+
+		boolean retVal = true;
+
+		int tries = 0;
+
+		if (path.exists()) {
+			return retVal;
+		}
+
+		// try few times
+		while (tries < MAX_DIRECTORY_CREATION_TRIES) {
+
+			retVal = path.mkdirs();
+			// mkdirs can fail for a number of reasons including the case where
+			// the directory is open by another process. The API does not make
+			// any difference so we assume the latter case (worst case)
+			if (!retVal) { // sleep for moment and try again.
+
+				tries++;
+
+				try {
+					Thread.sleep(SLEEP_TIME_BETWEEN_DIRECTORY_CREATION_TRIES);
+				} catch (InterruptedException e) {
+					// Do nothing
+				}
+			} else { // pass
+				break;
+			}
+		}
+
+		return retVal;
+
+	}
+}