/*

* 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 "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:  Mifconv utilities.

*

*/

#ifndef __MIFCONVUTIL_H__

#define __MIFCONVUTIL_H__

#include "mifconv.h"

#include "mifconv_sourcefile.h"

#include <sstream>

class MifConvUtil

{

public:

    static int ByteWidth(int aPixelWidth,int aBitsPerPixel);

    /**

     * Returns file extension of the given filename

     * @return String representing the file extension

     * @param fileName String representing the file name.

     */

	static MifConvString FileExtension( const MifConvString& fileName );

    /**

     * Returns file name without the extension

     * @return String representing the file name without the extension

     * @param fileName String representing the file name.

     */

    static MifConvString FilenameWithoutExtension( const MifConvString& fileName );

    /**

     * Returns file name without the path

     * @return String representing the file name without the path

     * @param fileName String representing the file name.

     */

    static MifConvString FilenameWithoutPath( const MifConvString& fileName );

    /**

     * Tells whether the file with the given filename exists.

     * @return true if the given file exists, false otherwise.

     * @param fileName File name

     */

    static bool FileExists( const MifConvString& fileName ); 

    /**

     * Returns file size

     * @return File size

     * @param fileName File name

     */

    static size_t FileSize( const MifConvString& fileName );

    /**

     * Reads file contents and returns pointer to data buffer. Returns also

     * the data size in bytes.

     * @return std::pair object containing the pointer to the allocated data buffer and the 

     * data size in byte. The caller must take the ownership of the returned data pointer.

     * @param fileName Filename

     */

    static MifConvFileData FileContents( const MifConvString& fileName );

    /**

     * Converts the given object to string. Can be used for example to converting integers to string:

     * <code>

     * int i = 0;

     * MifConvString iAsString(MifConvUtil::ToString(i));

     * </code>

     *

     * @return String built from the given object.

     * @param s Reference to the object to be converted to string.

     */

    template <typename T>

    static MifConvString ToString(const T& s)

    {

        std::stringstream ss;

        ss << s;

        return MifConvString(ss.str());

    }

    /**

     * Replaces given characters to other one from the given string.

     * @param str String from which the characters will be replaced.

     * @param replaceFrom This character will be replaced by other one.

     * @param replaceTo Characters will be replaced by this.

     */

    static void ReplaceChar( MifConvString& str, char replaceFrom, char replaceTo);

    /** 

     * Tells whether the given character is a whitespace character or not.

     * @param c Charater to be investigated.

     * @return true if the given character is whitespace character, false otherwise.

     */

    static bool IsWhiteSpace(char c);

    /**

     * Splits the given path to drive and directory path parts.

     * @param sourcePath Directory path to be splitted.

     * @param drive Drive part of the given path, if any.

     * @param path Directory path of the given path, if any.

     */

    static void SplitPath( const MifConvString& sourcePath, MifConvString& drive, MifConvString& path);

    /**

     * Compares two string. Ignores the case of the letters.

     * @return zero if the strings are equal

     * @param lhs Left hand side string

     * @param rhs Right hand side string

     */

    static int CompareIgnoreCase( const MifConvString& lhs, const MifConvString& rhs );

    /**

     * Replaces all the charactes by lower case characters.

     * @return String with lower case letters.

     * @param str Input string

     */

    static MifConvString& ToLower( MifConvString& str );

    /**

     * Splits the given string using the given separator.

     * @param str Input string

     * @param separator The input string is splitted using this sub-string as a separator

     * @param components List of the sub-strings splitted from the original input string

     */

    static void SplitString( const MifConvString& str, const MifConvString& separator, MifConvStringList& components );

    /**

     * Ensures that the given path exists. Tries to create it if it does not exist.

     * @param destFileName Filename that is to be checked.

     * @param ignoreLast If true, last part of the <code>destFileName</code> is stripped of 

     * Directory separator used as a separator.

     */

    static void EnsurePathExists( const MifConvString& destFileName, bool ignoreLast = false );

    /**

     * Removes duplicated directory separators from the given string.

     * @param str String from which the duplicated directory separators are to be searched and removed.

     */

    static void RemoveDuplicateDirSeparators( MifConvString& str );

    /**

     * Creates a directory with given path

     * @return True if the directory was successfully created, false otherwise.

     * @param path Directory path

     */

    static bool CreateDirectory( const MifConvString& path );

    /**

     * Trims the filename so that first letter is capitalized and others are lower case.

     * @return Trimmed string

     * @param filename Filename to be trimmed.

     */

    static MifConvString UnadornedFilename( const MifConvString& filename );

    /**

     * Finds the correct mask file for the bitmap file and sets it to the given object.

     * @param srcFile Source file object.

     */

    static void FindAndSetBitmapMaskFile( MifConvSourceFile& srcFile );

    /**

     * Returns a unique temporary file name.

     * @return Temporary file name string.

     */

    static MifConvString TemporaryFilename();

    /**

     * Copies a file 

     * @return True if the copying was successful, false otherwise.

     * @param from File which is to be copied from

     * @param to Destination file.

     */

    static bool CopyFile(const MifConvString& from, const MifConvString& to);

    /**

     * Returns current working directory path.

     * @return Current working directory path.

     */

    static MifConvString CurrentPath();

    /**

     * Changes the working directory

     * @param dirName Working directory name

     */

    static void ChangeDirectory( const MifConvString& dirName );

    /**

     * Removes a directory

     * @return Zero if the removal was successful, non-zero otherwise.

     * @param dirName Directory name

     */

    static int RemoveDirectory( const MifConvString& dirName );

    /**

     * Removes a file

     * @param fileName Filename

     * @param maxTries Maximum number of file deletion times in case of failure.

     * @param noException If true, no exception is thrown in case of failure. Warning is 

     * printed in debug log. If false, <code>MifConvException</code> is thrown in case of failure.

     */

    static void RemoveFile( const MifConvString& fileName, int maxTries = 1, bool noException = false );

    /**

     * Returns MifConv debug filename specified in MIFCONV_DEBUG_FILE

     * @return Debug file name

     */

    static MifConvString DebugFile();

    /**

     * Logs string to debug file

     * @param debugStr Debug string to be logged.

     */

    static void DebugLog(const MifConvString& debugStr);

    /**

     * Returns default temp directory for intermediate and temporary files

     * @return Temporary directory name

     */

    static const MifConvString& DefaultTempDirectory();

private:

    enum MifConvDebugMode

    {

        DebugMode_Unknown,

        DebugMode_NoDebug,

        DebugMode_Debug

    };

    static MifConvDebugMode iDebugMode;

    static MifConvString iDebugFile;

    static MifConvString iTempDirectory;

};

#endif