javacommons/utils/inc/javaoslayer.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 27 Apr 2010 16:30:29 +0300
branchRCL_3
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Revision: v2.1.22 Kit: 201017
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/*
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* Copyright (c) 2007-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#ifndef JAVAOSLAYER_H
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#define JAVAOSLAYER_H
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#include <string>
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#include <list>
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#include <vector>
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#include "javaosheaders.h"
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namespace java
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{
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namespace util
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{
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// Runtime specific bootclasspath identifier.
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const int BOOT_CLASSPATH_MIDP = 1;
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const int BOOT_CLASSPATH_INSTALLER = 2;
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const int BOOT_CLASSPATH_TCKRUNNER = 3;
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class DriveId;
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class JavaOsLayer
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{
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public:
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    OS_IMPORT static
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    void getOsSpecificLibName(std::string& result, const char* libName);
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    OS_IMPORT static void getOsSpecificJavaRootPath(std::string& path);
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    /**
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    * Utility method for getting the root of OMJ binaries. By default the
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    * method will set the path without drive letter (in file systems that
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    * uses drive letters). The utility will append the leading slash to the
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    * path(e.g. the result could be "\sys\bin\" not "\sys\bin").
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    * If the append flag is set, then it is assumed that provided argument
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    * 'path' includes the drive letter and the implentation will append ':'
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    * and the valid path.
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    * The utility will return a refrence to the path given as argument just
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    * for helping e.g. concatenation.
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    * <p>
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    * Example in S60:
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    *   std::string path;
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    *   getBinRoot(path); //This will set path to contain "\sys\bin"
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    *   std::string path = 'C';
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    *   getBinRoot(path, true); //This will set path to contain "C:\sys\bin"
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    *
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    * @param[in/out] path Utility will either set or prepend the binary root
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    *                depending on the value of argument 'append'
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    * @param[in/out] append Whether to append the result into the argument
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    *                'path' or override the content. Look the description
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    *                above for further instructions.
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    * @return Reference to argument 'path'.
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    */
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    OS_IMPORT static std::string& getBinRoot(std::string& path, bool append = false);
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    /**
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    * Utility method for getting the root of OMJ resources. The behavior of this
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    * method is very similar to getBinRoot, so look for further information from
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    * the description of the JavaOsLayer::getBinRoot()
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    *
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    * @param[in/out] path Utility will either set or prepend the resource root
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    *                depending on the value of argument 'append'
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    * @param[in/out] append Whether to append the result into the argument
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    *                'path' or override the content. Look the description
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    *                of JavaOsLayer::getBinRoot() for further instructions.
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    * @return Reference to argument 'path'.
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    */
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    OS_IMPORT static std::string& getResRoot(std::string& path, bool append = false);
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    /**
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    * Utility method for getting the root of Midp work directory. The behavior of
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    * thismethod is very similar to getBinRoot, so look for further information
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    * from the description of the JavaOsLayer::getBinRoot()
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    *
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    * @param[in/out] path Utility will either set or prepend the Midp work
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                          directory root depending on the value of argument
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                          'append'
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    * @param[in/out] append Whether to append the result into the argument
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    *                       'path' or override the content. Look the
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                             description of JavaOsLayer::getBinRoot() for
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    *                        further instructions.
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    * @return Reference to argument 'path'.
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    */
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    OS_IMPORT static std::string& getMidpRoot(std::string& path, bool append = false);
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    /**
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    * Utility method for getting the root of Java Captain's work directory.
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    * The behavior of this method is very similar to getBinRoot, so look for
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    * further information from the description of the JavaOsLayer::getBinRoot()
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    *
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    * @param[in/out] path Utility will either set or prepend the Java Captain's
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    *                     work directory root depending on the value of argument
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                          'append'
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    * @param[in/out] append Whether to append the result into the argument
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    *                       'path' or override the content. Look the
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                            description of JavaOsLayer::getBinRoot() for
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    *                       further instructions.
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    * @return Reference to argument 'path'.
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    */
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    OS_IMPORT static std::string& getJavaCaptainRoot(std::string& path, bool append = false);
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    /**
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    * Utility method for getting the drive where the MIDP is installed in
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    * systems supporting drive letters.
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    * @return Instance of class DriveLetter conatining the drive letter as char and
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    *         as integer. For further information see DriveLetter class description.
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    */
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    OS_IMPORT static DriveId  getMidpDrive();
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    OS_IMPORT static void*    dlopen(const char* file);
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    OS_IMPORT static void*    dlsym(void* handle, const char* name, bool containsByteCode = false);
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    OS_IMPORT static int      dlclose(void* handle);
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    /**
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     * Utility method for tracing the startup time.
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     * @param[in] header The header of the trace.
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     * @param[in] freeMem The amount of free memory of the Java heap. Set to -1
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     *                    if unknown.
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     * @param[in] totalMem The size of the Java heap. Set to -1 if unknown.
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     */
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    OS_IMPORT static void startUpTrace(const std::string& header,
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                                       int freeMem, int totalMem);
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    /**
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     * Populate bootclasspath ODC package names. If not found or error
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     * it is left empty.
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     *
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     * @param[out] odcFiles   list of ODC files for bootclasspath.
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     * @param[out] bcpEntites list of other bootclasspath enties than ODC
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                              files e.g jar files.
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     * @param[in] type bootclasspath type. If not in valid range midp
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     *                 bootclasspath is set.
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     */
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    OS_IMPORT static void bootClassPath(std::list<std::wstring>& odcFiles,
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                                        std::list<std::wstring>& bcpEntites,
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                                        const int type);
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private: //Methods
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    JavaOsLayer();                                //No default constructor allowed
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    JavaOsLayer(const JavaOsLayer&);              //No copy constructor allowed
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    JavaOsLayer& operator= (const JavaOsLayer&);  //No Assignment operator allowed
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    /**
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     * List directory entries.
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     *
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     * @param[in] dirPath direcotry path.
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     * @param[out] entries directory entries.
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     */
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    static void listDirectory(std::string& dirPath, std::vector<std::string>& entries);
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    /**
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     * List odc file contents.
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     *
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     * @param[in] filePath path to file.
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     * @param[out] entries odc file entries.
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     */
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    static void listOdcFile(std::string& filePath, std::vector<std::string>& entries);
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    /**
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     * Populate Classpath entries from given vector. This separetes ODC files from other
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     * classpath entries and add full path of the items. Vector contains only file names
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     * and postfixes i.e. myfile.odc or mygreat.jar.
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     *
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     * @param[in] pathPrefix Path prefix used to created full path.
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     * @param[in] entries Class path entries.
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     * @param[out] odcFiles All odc files from entries.
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     * @param[out] bcpEntites All other entities.
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     */
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    static void populateCPEntries(const std::string& pathPrefix,
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                                  const std::vector<std::string>& entries,
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                                  std::list<std::wstring>& odcFiles,
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                                  std::list<std::wstring>& bcpEntites);
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    /**
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     * Check all rom entries and if they are not matching to iad entries
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     * adds them to deltaEntries.
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     *
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     * @param romEntries[in] ROM classpath entries.
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     * @param iadEntries[in] IAD classpath entries.
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     * @param deltaEntries[out] all ROM entries not deployed with IAD package.
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     */
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    static void deltaCPEntries(const std::vector<std::string>& romEntries,
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                               const std::vector<std::string>& iadEntries,
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                               std::vector<std::string>& deltaEntries);
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};
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/**
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 * A class for storing both drive letter as char and as integer.
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 * The integer value 0 means dirve letter A, 1 means drive letter B etc.
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 */
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class DriveId
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{
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public:
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    /**
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     * The constructor that sets the object with default values. Useful for
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     * platforms that don't have drive letter concept.
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     */
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    DriveId() : mLetter(0), mIndex(-1)
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    {
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        //Set the drive letter to be empty;
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        mLetter = new char[1];
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        mLetter[0]=0;
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    }
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    /**
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     * The constructor with specified arguments.
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     * @param[in] driveLetter Drive letter as char*. This can't be const, since
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                  it will be deleted in the destructor;
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     * @param[in] driveIndex  Drive letter as integer. 0='A', 1='B'...25='Z'
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     */
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    DriveId(char* driveLetter, int driveIndex) : mLetter(driveLetter),
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            mIndex(driveIndex) {}
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    /**
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     * The destructor.
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     */
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    ~DriveId()
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    {
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        delete[] mLetter;
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    }
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    /**
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     * Getter for the drive letter.
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     * @return drive letter as char. The charcter case is unspecified. If
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     *         some error has happened when solving the drive letter, the
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     *         content is empty ''.
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     */
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    inline const char* getDriveLetter() const
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    {
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        return mLetter;
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    }
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    /**
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     * Getter for the drive letter index.
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     * @return drive letter index. If some error has happened when solving
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     *         the drive letter or the system doesn't support drive letters
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     *         -1 is returned.
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     */
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    inline int getDriveIndex() const
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    {
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        return mIndex;
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    }
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private:
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    char*   mLetter;
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    int     mIndex;
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};
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} //end namespace util
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} //end namespace java
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#endif // JAVAOSLAYER_H