mirror of https://github.com/axmolengine/axmol.git
595 lines
23 KiB
C++
595 lines
23 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2013 cocos2d-x.org
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Copyright (c) 2013-2014 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CC_FILEUTILS_H__
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#define __CC_FILEUTILS_H__
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#include <string>
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#include <vector>
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#include <unordered_map>
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#include "platform/CCPlatformMacros.h"
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#include "base/ccTypes.h"
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#include "base/CCValue.h"
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#include "base/CCData.h"
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NS_CC_BEGIN
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/**
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* @addtogroup platform
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* @{
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*/
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/** Helper class to handle file operations. */
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class CC_DLL FileUtils
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{
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public:
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/**
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* Gets the instance of FileUtils.
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*/
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static FileUtils* getInstance();
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/**
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* Destroys the instance of FileUtils.
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*/
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static void destroyInstance();
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/**
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* You can inherit from platform dependent implementation of FileUtils, such as FileUtilsAndroid,
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* and use this function to set delegate, then FileUtils will invoke delegate's implementation.
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* Fox example, your resources are encrypted, so you need to decrypt it after reading data from
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* resources, then you can implement all getXXX functions, and engine will invoke your own getXX
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* functions when reading data of resources.
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*
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* If you don't want to system default implementation after setting delegate, you can just pass nullptr
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* to this function.
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*
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* @warning It will delete previous delegate
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* @lua NA
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*/
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static void setDelegate(FileUtils *delegate);
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/** @deprecated Use getInstance() instead */
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CC_DEPRECATED_ATTRIBUTE static FileUtils* sharedFileUtils() { return getInstance(); }
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/** @deprecated Use destroyInstance() instead */
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CC_DEPRECATED_ATTRIBUTE static void purgeFileUtils() { destroyInstance(); }
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/**
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* The destructor of FileUtils.
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* @js NA
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* @lua NA
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*/
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virtual ~FileUtils();
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/**
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* Purges full path caches.
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*/
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virtual void purgeCachedEntries();
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/**
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* Gets string from a file.
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*/
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virtual std::string getStringFromFile(const std::string& filename);
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/**
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* Creates binary data from a file.
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* @return A data object.
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*/
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virtual Data getDataFromFile(const std::string& filename);
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/**
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* Gets resource file data
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*
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* @param[in] filename The resource file name which contains the path.
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* @param[in] mode The read mode of the file.
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* @param[out] size If the file read operation succeeds, it will be the data size, otherwise 0.
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* @return Upon success, a pointer to the data is returned, otherwise NULL.
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* @warning Recall: you are responsible for calling free() on any Non-NULL pointer returned.
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*/
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CC_DEPRECATED_ATTRIBUTE virtual unsigned char* getFileData(const std::string& filename, const char* mode, ssize_t *size);
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/**
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* Gets resource file data from a zip file.
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*
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* @param[in] filename The resource file name which contains the relative path of the zip file.
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* @param[out] size If the file read operation succeeds, it will be the data size, otherwise 0.
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* @return Upon success, a pointer to the data is returned, otherwise nullptr.
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* @warning Recall: you are responsible for calling free() on any Non-nullptr pointer returned.
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*/
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virtual unsigned char* getFileDataFromZip(const std::string& zipFilePath, const std::string& filename, ssize_t *size);
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/** Returns the fullpath for a given filename.
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First it will try to get a new filename from the "filenameLookup" dictionary.
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If a new filename can't be found on the dictionary, it will use the original filename.
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Then it will try to obtain the full path of the filename using the FileUtils search rules: resolutions, and search paths.
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The file search is based on the array element order of search paths and resolution directories.
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For instance:
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We set two elements("/mnt/sdcard/", "internal_dir/") to search paths vector by setSearchPaths,
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and set three elements("resources-ipadhd/", "resources-ipad/", "resources-iphonehd")
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to resolutions vector by setSearchResolutionsOrder. The "internal_dir" is relative to "Resources/".
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If we have a file named 'sprite.png', the mapping in fileLookup dictionary contains `key: sprite.png -> value: sprite.pvr.gz`.
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Firstly, it will replace 'sprite.png' with 'sprite.pvr.gz', then searching the file sprite.pvr.gz as follows:
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/mnt/sdcard/resources-ipadhd/sprite.pvr.gz (if not found, search next)
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/mnt/sdcard/resources-ipad/sprite.pvr.gz (if not found, search next)
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/mnt/sdcard/resources-iphonehd/sprite.pvr.gz (if not found, search next)
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/mnt/sdcard/sprite.pvr.gz (if not found, search next)
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internal_dir/resources-ipadhd/sprite.pvr.gz (if not found, search next)
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internal_dir/resources-ipad/sprite.pvr.gz (if not found, search next)
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internal_dir/resources-iphonehd/sprite.pvr.gz (if not found, search next)
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internal_dir/sprite.pvr.gz (if not found, return "sprite.png")
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If the filename contains relative path like "gamescene/uilayer/sprite.png",
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and the mapping in fileLookup dictionary contains `key: gamescene/uilayer/sprite.png -> value: gamescene/uilayer/sprite.pvr.gz`.
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The file search order will be:
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/mnt/sdcard/gamescene/uilayer/resources-ipadhd/sprite.pvr.gz (if not found, search next)
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/mnt/sdcard/gamescene/uilayer/resources-ipad/sprite.pvr.gz (if not found, search next)
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/mnt/sdcard/gamescene/uilayer/resources-iphonehd/sprite.pvr.gz (if not found, search next)
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/mnt/sdcard/gamescene/uilayer/sprite.pvr.gz (if not found, search next)
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internal_dir/gamescene/uilayer/resources-ipadhd/sprite.pvr.gz (if not found, search next)
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internal_dir/gamescene/uilayer/resources-ipad/sprite.pvr.gz (if not found, search next)
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internal_dir/gamescene/uilayer/resources-iphonehd/sprite.pvr.gz (if not found, search next)
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internal_dir/gamescene/uilayer/sprite.pvr.gz (if not found, return "gamescene/uilayer/sprite.png")
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If the new file can't be found on the file system, it will return the parameter filename directly.
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This method was added to simplify multiplatform support. Whether you are using cocos2d-js or any cross-compilation toolchain like StellaSDK or Apportable,
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you might need to load different resources for a given file in the different platforms.
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@since v2.1
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*/
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virtual std::string fullPathForFilename(const std::string &filename) const;
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/**
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* Loads the filenameLookup dictionary from the contents of a filename.
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*
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* @note The plist file name should follow the format below:
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*
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* @code
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* <?xml version="1.0" encoding="UTF-8"?>
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* <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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* <plist version="1.0">
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* <dict>
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* <key>filenames</key>
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* <dict>
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* <key>sounds/click.wav</key>
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* <string>sounds/click.caf</string>
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* <key>sounds/endgame.wav</key>
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* <string>sounds/endgame.caf</string>
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* <key>sounds/gem-0.wav</key>
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* <string>sounds/gem-0.caf</string>
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* </dict>
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* <key>metadata</key>
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* <dict>
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* <key>version</key>
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* <integer>1</integer>
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* </dict>
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* </dict>
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* </plist>
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* @endcode
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* @param filename The plist file name.
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*
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@since v2.1
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* @js loadFilenameLookup
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* @lua loadFilenameLookup
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*/
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virtual void loadFilenameLookupDictionaryFromFile(const std::string &filename);
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/**
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* Sets the filenameLookup dictionary.
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*
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* @param pFilenameLookupDict The dictionary for replacing filename.
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* @since v2.1
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*/
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virtual void setFilenameLookupDictionary(const ValueMap& filenameLookupDict);
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/**
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* Gets full path from a file name and the path of the relative file.
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* @param filename The file name.
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* @param pszRelativeFile The path of the relative file.
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* @return The full path.
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* e.g. filename: hello.png, pszRelativeFile: /User/path1/path2/hello.plist
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* Return: /User/path1/path2/hello.pvr (If there a a key(hello.png)-value(hello.pvr) in FilenameLookup dictionary. )
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*
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*/
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virtual std::string fullPathFromRelativeFile(const std::string &filename, const std::string &relativeFile);
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/**
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* Sets the array that contains the search order of the resources.
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*
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* @param searchResolutionsOrder The source array that contains the search order of the resources.
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* @see getSearchResolutionsOrder(), fullPathForFilename(const char*).
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* @since v2.1
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* In js:var setSearchResolutionsOrder(var jsval)
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* @lua NA
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*/
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virtual void setSearchResolutionsOrder(const std::vector<std::string>& searchResolutionsOrder);
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/**
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* Append search order of the resources.
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*
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* @see setSearchResolutionsOrder(), fullPathForFilename().
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* @since v2.1
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*/
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virtual void addSearchResolutionsOrder(const std::string &order,const bool front=false);
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/**
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* Gets the array that contains the search order of the resources.
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*
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* @see setSearchResolutionsOrder(const std::vector<std::string>&), fullPathForFilename(const char*).
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* @since v2.1
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* @lua NA
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*/
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virtual const std::vector<std::string>& getSearchResolutionsOrder() const;
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/**
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* Sets the array of search paths.
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*
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* You can use this array to modify the search path of the resources.
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* If you want to use "themes" or search resources in the "cache", you can do it easily by adding new entries in this array.
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*
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* @note This method could access relative path and absolute path.
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* If the relative path was passed to the vector, FileUtils will add the default resource directory before the relative path.
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* For instance:
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* On Android, the default resource root path is "assets/".
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* If "/mnt/sdcard/" and "resources-large" were set to the search paths vector,
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* "resources-large" will be converted to "assets/resources-large" since it was a relative path.
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*
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* @param searchPaths The array contains search paths.
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* @see fullPathForFilename(const char*)
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* @since v2.1
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* In js:var setSearchPaths(var jsval);
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* @lua NA
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*/
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virtual void setSearchPaths(const std::vector<std::string>& searchPaths);
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/**
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* Set default resource root path.
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*/
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void setDefaultResourceRootPath(const std::string& path);
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/**
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* Add search path.
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*
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* @since v2.1
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*/
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void addSearchPath(const std::string & path, const bool front=false);
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/**
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* Gets the array of search paths.
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*
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* @return The array of search paths.
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* @see fullPathForFilename(const char*).
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* @lua NA
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*/
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virtual const std::vector<std::string>& getSearchPaths() const;
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/**
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* Gets the writable path.
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* @return The path that can be write/read a file in
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*/
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virtual std::string getWritablePath() const = 0;
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/**
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* Sets writable path.
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*/
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virtual void setWritablePath(const std::string& writablePath);
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/**
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* Sets whether to pop-up a message box when failed to load an image.
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*/
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virtual void setPopupNotify(bool notify);
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/** Checks whether to pop up a message box when failed to load an image.
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* @return True if pop up a message box when failed to load an image, false if not.
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*/
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virtual bool isPopupNotify() const;
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/**
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* Converts the contents of a file to a ValueMap.
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* @param filename The filename of the file to gets content.
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* @return ValueMap of the file contents.
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* @note This method is used internally.
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*/
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virtual ValueMap getValueMapFromFile(const std::string& filename);
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/** Converts the contents of a file to a ValueMap.
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* This method is used internally.
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*/
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virtual ValueMap getValueMapFromData(const char* filedata, int filesize);
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/**
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* write a ValueMap into a plist file
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*
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*@param dict the ValueMap want to save
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*@param fullPath The full path to the file you want to save a string
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*@return bool
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*/
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virtual bool writeToFile(ValueMap& dict, const std::string& fullPath);
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/**
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* write a string into a file
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*
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* @param dataStr the string want to save
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* @param fullPath The full path to the file you want to save a string
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* @return bool True if write success
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*/
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virtual bool writeStringToFile(std::string dataStr, const std::string& fullPath);
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/**
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* write Data into a file
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*
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*@param retData the data want to save
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*@param fullPath The full path to the file you want to save a string
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*@return bool
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*/
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virtual bool writeDataToFile(Data retData, const std::string& fullPath);
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/**
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* write ValueMap into a plist file
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*
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*@param dict the ValueMap want to save
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*@param fullPath The full path to the file you want to save a string
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*@return bool
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*/
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virtual bool writeValueMapToFile(ValueMap& dict, const std::string& fullPath);
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/**
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* write ValueVector into a plist file
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*
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*@param vecData the ValueVector want to save
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*@param fullPath The full path to the file you want to save a string
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*@return bool
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*/
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virtual bool writeValueVectorToFile(ValueVector vecData, const std::string& fullPath);
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/**
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* Windows fopen can't support UTF-8 filename
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* Need convert all parameters fopen and other 3rd-party libs
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*
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* @param filename std::string name file for convertation from utf-8
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* @return std::string ansi filename in current locale
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*/
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virtual std::string getSuitableFOpen(const std::string& filenameUtf8) const;
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// Converts the contents of a file to a ValueVector.
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// This method is used internally.
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virtual ValueVector getValueVectorFromFile(const std::string& filename);
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/**
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* Checks whether a file exists.
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*
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* @note If a relative path was passed in, it will be inserted a default root path at the beginning.
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* @param filename The path of the file, it could be a relative or absolute path.
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* @return True if the file exists, false if not.
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*/
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virtual bool isFileExist(const std::string& filename) const;
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/**
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* Gets filename extension is a suffix (separated from the base filename by a dot) in lower case.
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* Examples of filename extensions are .png, .jpeg, .exe, .dmg and .txt.
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* @param filePath The path of the file, it could be a relative or absolute path.
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* @return suffix for filename in lower case or empty if a dot not found.
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*/
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virtual std::string getFileExtension(const std::string& filePath) const;
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/**
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* Checks whether the path is an absolute path.
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*
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* @note On Android, if the parameter passed in is relative to "assets/", this method will treat it as an absolute path.
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* Also on Blackberry, path starts with "app/native/Resources/" is treated as an absolute path.
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*
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* @param path The path that needs to be checked.
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* @return True if it's an absolute path, false if not.
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*/
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virtual bool isAbsolutePath(const std::string& path) const;
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/**
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* Checks whether the path is a directory.
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*
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* @param dirPath The path of the directory, it could be a relative or an absolute path.
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* @return True if the directory exists, false if not.
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*/
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virtual bool isDirectoryExist(const std::string& dirPath) const;
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/**
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* Creates a directory.
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*
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* @param dirPath The path of the directory, it must be an absolute path.
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* @return True if the directory have been created successfully, false if not.
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*/
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virtual bool createDirectory(const std::string& dirPath);
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/**
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* Removes a directory.
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*
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* @param dirPath The full path of the directory, it must be an absolute path.
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* @return True if the directory have been removed successfully, false if not.
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*/
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virtual bool removeDirectory(const std::string& dirPath);
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/**
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* Removes a file.
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*
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* @param filepath The full path of the file, it must be an absolute path.
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* @return True if the file have been removed successfully, false if not.
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*/
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virtual bool removeFile(const std::string &filepath);
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/**
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* Renames a file under the given directory.
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*
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* @param path The parent directory path of the file, it must be an absolute path.
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* @param oldname The current name of the file.
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* @param name The new name of the file.
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* @return True if the file have been renamed successfully, false if not.
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*/
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virtual bool renameFile(const std::string &path, const std::string &oldname, const std::string &name);
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/**
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* Renames a file under the given directory.
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*
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* @param oldfullpath The current fullpath of the file. Includes path and name.
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* @param newfullpath The new fullpath of the file. Includes path and name.
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* @return True if the file have been renamed successfully, false if not.
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*/
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virtual bool renameFile(const std::string &oldfullpath, const std::string &newfullpath);
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/**
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* Retrieve the file size.
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*
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* @note If a relative path was passed in, it will be inserted a default root path at the beginning.
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* @param filepath The path of the file, it could be a relative or absolute path.
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* @return The file size.
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*/
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virtual long getFileSize(const std::string &filepath);
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/** Returns the full path cache. */
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const std::unordered_map<std::string, std::string>& getFullPathCache() const { return _fullPathCache; }
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protected:
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/**
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* The default constructor.
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*/
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FileUtils();
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/**
|
|
* Initializes the instance of FileUtils. It will set _searchPathArray and _searchResolutionsOrderArray to default values.
|
|
*
|
|
* @note When you are porting Cocos2d-x to a new platform, you may need to take care of this method.
|
|
* You could assign a default value to _defaultResRootPath in the subclass of FileUtils(e.g. FileUtilsAndroid). Then invoke the FileUtils::init().
|
|
* @return true if successed, otherwise it returns false.
|
|
*
|
|
*/
|
|
virtual bool init();
|
|
|
|
/**
|
|
* Gets the new filename from the filename lookup dictionary.
|
|
* It is possible to have a override names.
|
|
* @param filename The original filename.
|
|
* @return The new filename after searching in the filename lookup dictionary.
|
|
* If the original filename wasn't in the dictionary, it will return the original filename.
|
|
*/
|
|
virtual std::string getNewFilename(const std::string &filename) const;
|
|
|
|
/**
|
|
* Checks whether a file exists without considering search paths and resolution orders.
|
|
* @param filename The file (with absolute path) to look up for
|
|
* @return Returns true if the file found at the given absolute path, otherwise returns false
|
|
*/
|
|
virtual bool isFileExistInternal(const std::string& filename) const = 0;
|
|
|
|
/**
|
|
* Checks whether a directory exists without considering search paths and resolution orders.
|
|
* @param dirPath The directory (with absolute path) to look up for
|
|
* @return Returns true if the directory found at the given absolute path, otherwise returns false
|
|
*/
|
|
virtual bool isDirectoryExistInternal(const std::string& dirPath) const;
|
|
|
|
/**
|
|
* Gets full path for filename, resolution directory and search path.
|
|
*
|
|
* @param filename The file name.
|
|
* @param resolutionDirectory The resolution directory.
|
|
* @param searchPath The search path.
|
|
* @return The full path of the file. It will return an empty string if the full path of the file doesn't exist.
|
|
*/
|
|
virtual std::string getPathForFilename(const std::string& filename, const std::string& resolutionDirectory, const std::string& searchPath) const;
|
|
|
|
/**
|
|
* Gets full path for the directory and the filename.
|
|
*
|
|
* @note Only iOS and Mac need to override this method since they are using
|
|
* `[[NSBundle mainBundle] pathForResource: ofType: inDirectory:]` to make a full path.
|
|
* Other platforms will use the default implementation of this method.
|
|
* @param directory The directory contains the file we are looking for.
|
|
* @param filename The name of the file.
|
|
* @return The full path of the file, if the file can't be found, it will return an empty string.
|
|
*/
|
|
virtual std::string getFullPathForDirectoryAndFilename(const std::string& directory, const std::string& filename) const;
|
|
|
|
/** Dictionary used to lookup filenames based on a key.
|
|
* It is used internally by the following methods:
|
|
*
|
|
* std::string fullPathForFilename(const char*);
|
|
*
|
|
* @since v2.1
|
|
*/
|
|
ValueMap _filenameLookupDict;
|
|
|
|
/**
|
|
* The vector contains resolution folders.
|
|
* The lower index of the element in this vector, the higher priority for this resolution directory.
|
|
*/
|
|
std::vector<std::string> _searchResolutionsOrderArray;
|
|
|
|
/**
|
|
* The vector contains search paths.
|
|
* The lower index of the element in this vector, the higher priority for this search path.
|
|
*/
|
|
std::vector<std::string> _searchPathArray;
|
|
|
|
/**
|
|
* The default root path of resources.
|
|
* If the default root path of resources needs to be changed, do it in the `init` method of FileUtils's subclass.
|
|
* For instance:
|
|
* On Android, the default root path of resources will be assigned with "assets/" in FileUtilsAndroid::init().
|
|
* Similarly on Blackberry, we assign "app/native/Resources/" to this variable in FileUtilsBlackberry::init().
|
|
*/
|
|
std::string _defaultResRootPath;
|
|
|
|
/**
|
|
* The full path cache. When a file is found, it will be added into this cache.
|
|
* This variable is used for improving the performance of file search.
|
|
*/
|
|
mutable std::unordered_map<std::string, std::string> _fullPathCache;
|
|
|
|
/**
|
|
* Writable path.
|
|
*/
|
|
std::string _writablePath;
|
|
|
|
/**
|
|
* The singleton pointer of FileUtils.
|
|
*/
|
|
static FileUtils* s_sharedFileUtils;
|
|
|
|
};
|
|
|
|
// end of support group
|
|
/** @} */
|
|
|
|
NS_CC_END
|
|
|
|
#endif // __CC_FILEUTILS_H__
|