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janwas
a6499ff319
refactor: move populate logic to separate file; VfsDirectory now only provides the realDirectory storage, while Attach() responsibility is moved to vfs_populate. This was SVN commit r6333.
110 lines
2.6 KiB
C++
110 lines
2.6 KiB
C++
/**
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* =========================================================================
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* File : vfs_tree.h
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* Project : 0 A.D.
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* Description : 'tree' of VFS directories and files
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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#ifndef INCLUDED_VFS_TREE
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#define INCLUDED_VFS_TREE
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#include "lib/file/file_system.h" // FileInfo
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#include "lib/file/common/file_loader.h" // PIFileLoader
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#include "lib/file/common/real_directory.h" // PRealDirectory
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class VfsFile
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{
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public:
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VfsFile(const std::string& name, off_t size, time_t mtime, size_t priority, const PIFileLoader& provider);
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const std::string& Name() const
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{
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return m_name;
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}
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off_t Size() const
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{
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return m_size;
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}
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time_t MTime() const
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{
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return m_mtime;
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}
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bool IsSupersededBy(const VfsFile& file) const;
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void GenerateDescription(char* text, size_t maxChars) const;
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LibError Load(const shared_ptr<u8>& buf) const;
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private:
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std::string m_name;
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off_t m_size;
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time_t m_mtime;
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size_t m_priority;
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PIFileLoader m_loader;
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};
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class VfsDirectory
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{
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public:
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VfsDirectory();
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/**
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* @return address of existing or newly inserted file; remains
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* valid until ClearR is called (i.e. VFS is rebuilt).
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**/
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VfsFile* AddFile(const VfsFile& file);
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/**
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* @return address of existing or newly inserted subdirectory; remains
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* valid until ClearR is called (i.e. VFS is rebuilt).
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**/
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VfsDirectory* AddSubdirectory(const std::string& name);
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VfsFile* GetFile(const std::string& name);
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VfsDirectory* GetSubdirectory(const std::string& name);
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void GetEntries(FileInfos* files, DirectoryNames* subdirectories) const;
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void DisplayR(size_t depth) const;
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void ClearR();
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/**
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* side effect: the next ShouldPopulate() will return true.
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**/
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void SetAssociatedDirectory(const PRealDirectory& realDirectory);
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const PRealDirectory& AssociatedDirectory() const
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{
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return m_realDirectory;
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}
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/**
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* @return whether this directory should be populated from its
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* AssociatedDirectory(). note that calling this is a promise to
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* do so if true is returned -- the flag is immediately reset.
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**/
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bool ShouldPopulate();
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private:
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typedef std::map<std::string, VfsFile> VfsFiles;
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VfsFiles m_files;
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typedef std::map<std::string, VfsDirectory> VfsSubdirectories;
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VfsSubdirectories m_subdirectories;
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PRealDirectory m_realDirectory;
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volatile uintptr_t m_shouldPopulate; // (cpu_CAS can't be used on bool)
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};
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#endif // #ifndef INCLUDED_VFS_TREE
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