mirror of https://github.com/axmolengine/axmol.git
417 lines
17 KiB
C++
417 lines
17 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2013 cocos2d-x.org
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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 "CCPlatformMacros.h"
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#include "ccTypes.h"
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NS_CC_BEGIN
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class Dictionary;
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class Array;
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/**
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* @addtogroup platform
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* @{
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*/
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//! @brief Helper class to handle file operations
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class CC_DLL FileUtils
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{
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friend class Array;
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friend class Dictionary;
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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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/** @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 the file searching cache.
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*
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* @note It should be invoked after the resources were updated.
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* For instance, in the CocosPlayer sample, every time you run application from CocosBuilder,
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* All the resources will be downloaded to the writable folder, before new js app launchs,
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* this method should be invoked to clean the file search cache.
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*/
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virtual void purgeCachedEntries();
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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] pszMode The read mode of the file.
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* @param[out] pSize 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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virtual unsigned char* getFileData(const char* filename, const char* mode, long *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 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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virtual unsigned char* getFileDataFromZip(const char* zipFilePath, const char* filename, long *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);
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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(Dictionary* filenameLookupDict);
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/**
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* Gets full path from a file name and the path of the reletive 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(void), 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);
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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();
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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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* 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);
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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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* 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 strFilePath The path of the file, it could be a relative or absolute path.
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* @return true if the file exists, otherwise it will return false.
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*/
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virtual bool isFileExist(const std::string& filePath) const = 0;
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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 strPath The path that needs to be checked.
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* @return true if it's an absolute path, otherwise it will return false.
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*/
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virtual bool isAbsolutePath(const std::string& path) const;
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/**
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* Sets/Gets 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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virtual bool isPopupNotify();
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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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/**
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* Initializes the instance of FileUtils. It will set _searchPathArray and _searchResolutionsOrderArray to default values.
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*
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* @note When you are porting Cocos2d-x to a new platform, you may need to take care of this method.
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* You could assign a default value to _defaultResRootPath in the subclass of FileUtils(e.g. FileUtilsAndroid). Then invoke the FileUtils::init().
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* @return true if successed, otherwise it returns false.
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*
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*/
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virtual bool init();
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/**
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* Gets the new filename from the filename lookup dictionary.
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* It is possible to have a override names.
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* @param filename The original filename.
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* @return The new filename after searching in the filename lookup dictionary.
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* If the original filename wasn't in the dictionary, it will return the original filename.
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*/
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virtual std::string getNewFilename(const std::string &filename);
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/**
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* Gets full path for filename, resolution directory and search path.
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*
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* @param filename The file name.
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* @param resolutionDirectory The resolution directory.
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* @param searchPath The search path.
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* @return The full path of the file. It will return an empty string if the full path of the file doesn't exist.
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*/
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virtual std::string getPathForFilename(const std::string& filename, const std::string& resolutionDirectory, const std::string& searchPath);
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/**
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* Gets full path for the directory and the filename.
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*
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* @note Only iOS and Mac need to override this method since they are using
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* `[[NSBundle mainBundle] pathForResource: ofType: inDirectory:]` to make a full path.
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* Other platforms will use the default implementation of this method.
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* @param strDirectory The directory contains the file we are looking for.
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* @param strFilename The name of the file.
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* @return The full path of the file, if the file can't be found, it will return an empty string.
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*/
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virtual std::string getFullPathForDirectoryAndFilename(const std::string& directory, const std::string& filename);
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/**
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* Creates a dictionary by the contents of a file.
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* @note This method is used internally.
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*/
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virtual Dictionary* createDictionaryWithContentsOfFile(const std::string& filename);
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/**
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* Write a dictionary to a plist file.
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* @note This method is used internally.
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*/
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virtual bool writeToFile(Dictionary *dict, const std::string& fullPath);
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/**
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* Creates an array by the contents of a file.
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* @note This method is used internally.
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*/
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virtual Array* createArrayWithContentsOfFile(const std::string& filename);
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/** Dictionary used to lookup filenames based on a key.
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* It is used internally by the following methods:
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*
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* std::string fullPathForFilename(const char*);
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*
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* @since v2.1
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*/
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Dictionary* _filenameLookupDict;
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/**
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* The vector contains resolution folders.
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* The lower index of the element in this vector, the higher priority for this resolution directory.
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*/
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std::vector<std::string> _searchResolutionsOrderArray;
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/**
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* The vector contains search paths.
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* The lower index of the element in this vector, the higher priority for this search path.
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*/
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std::vector<std::string> _searchPathArray;
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/**
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* The default root path of resources.
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* If the default root path of resources needs to be changed, do it in the `init` method of FileUtils's subclass.
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* For instance:
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* On Android, the default root path of resources will be assigned with "assets/" in FileUtilsAndroid::init().
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* Similarly on Blackberry, we assign "app/native/Resources/" to this variable in FileUtilsBlackberry::init().
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*/
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std::string _defaultResRootPath;
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/**
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* The full path cache. When a file is found, it will be added into this cache.
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* This variable is used for improving the performance of file search.
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*/
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std::unordered_map<std::string, std::string> _fullPathCache;
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/**
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* The singleton pointer of FileUtils.
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*/
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static FileUtils* s_sharedFileUtils;
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};
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// end of platform group
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/// @}
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NS_CC_END
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#endif // __CC_FILEUTILS_H__
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