filespecutils.h

linux下的一款播放器

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 * Source last modified: $Id: filespecutils.h,v 1.4.32.4 2004/07/09 01:44:45 hubbe Exp $
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#ifndef FILESPECUTILS_H
#define FILESPECUTILS_H

#include "hxstring.h"
#include "hxbuffer.h"
#include "filespec.h"

class CHXFileSpecUtils
{
	
public:
	// disk utilities
	static HX_RESULT GetFreeSpaceOnDisk(const CHXDirSpecifier& volSpec, INT64& freeSpace);
	static HX_RESULT GetTotalSpaceOnDisk(const CHXDirSpecifier& volSpec, INT64& totalSpace);
	static BOOL IsDiskEjectable(const CHXDirSpecifier& volSpec);
	static BOOL IsDiskWritable(const CHXDirSpecifier& volSpec);

	// IsLocal returns TRUE if the file or directory is on a local volume
	// (not on a server)
	static BOOL IsDiskLocal(const CHXDirSpecifier& volSpec);

	// file/dir utilities

	static HX_RESULT GetFileSize(const CHXFileSpecifier& fileSpec, INT64& fSize);
	static HX_RESULT GetDirectorySize(const CHXDirSpecifier& dirSpec, BOOL shouldDescend, INT64& fSize);
	
	static BOOL FileExists(const CHXFileSpecifier& fileSpec);		// returns TRUE only if exists & is a file
	static BOOL DirectoryExists(const CHXDirSpecifier& dirSpec);	// returns TRUE only if exists & is a directory
	
	static HX_RESULT CreateDir(const CHXDirSpecifier& dirSpec);

	static HX_RESULT RemoveDir(const CHXDirSpecifier& dirSpec);	// deletes an empty directory
	static HX_RESULT RemoveFile(const CHXFileSpecifier& fileSpec);
	
#if defined(_MACINTOSH) || defined(_MAC_UNIX)
	// these should be implemented on other platforms too, eventually
	static HX_RESULT MakeFileReadOnly(const CHXFileSpecifier& fileSpec);
	static HX_RESULT MakeFileNotReadOnly(const CHXFileSpecifier& fileSpec);
#endif
        
#if defined(_MACINTOSH) || defined(_MAC_UNIX) || defined(_UNIX)
	static HX_RESULT RenameMoveFile(CHXFileSpecifier& fileSpec, const char* pNewNameIfAny, const CHXDirSpecifier* pNewDirectoryIfAny);
#endif
	
	// file read & write
	//
	// on Mac, the file spec may be updated when the file is written out, so it's not a const parameter
	
	static HX_RESULT ReadTextFile(const CHXFileSpecifier& fileSpec, CHXString& outStr);
	static HX_RESULT ReadBinaryFile(const CHXFileSpecifier& fileSpec, IHXBuffer*& pOutBuffer);
	
	static HX_RESULT WriteTextFile(CHXFileSpecifier& fileSpec, const CHXString& inStr, BOOL bReplaceExistingFile);
	static HX_RESULT WriteBinaryFile(CHXFileSpecifier& fileSpec, IHXBuffer* inBuffer, BOOL bReplaceExistingFile);
	

	// unique file name utilities
	//
	// These returns a file spec with a unique filename in the specified directory
	//
	// pszTemplate is of the form "filenameWILDCARD.ext", with the wildcard to
	//   be replaced by a 1-4 digit number greater than or equal to 2
	//   For example, "MyFile%%.txt" with the wildcard "%%" can become MyFile2.txt
	//
	// GetUniqueFileSpec checks if pszNameFirst is available and uses that; if the name
	//   is not available, it substitutes 2, 3, 4, etc. for the wildcard in the template
	//   to create a unique name.
	//   For example:  pszNameFirst="MyFile.txt" pszTemplate="MyFile_%%.txt" pszWildcard="%%"
	//
	// GetUniqueTempFileSpec tries with a random number initially, and increments that
	//   number until it has a unique name
	//
	// Note: all of these strings should come from resources to enable localizers to
	//       customize the creation of file names
	
	static CHXFileSpecifier GetUniqueFileSpec(const CHXDirSpecifier& locationSpec, 
										const char *pszNameFirst, 
										const char *pszTemplate, const char *pszWildcard);
										
	static CHXFileSpecifier GetUniqueTempFileSpec(const CHXDirSpecifier& locationSpec, 
										const char *pszTemplate, const char *pszWildcard);
	
	// temporary directory
	
	static CHXDirSpecifier GetSystemTempDirectory(void);

	// replace any illegal file/dir name characters; returns true if a change was made
	static BOOL MakeNameLegal(char *pszName);


	// application utilities
	
	static CHXFileSpecifier GetCurrentApplication(void);
	static CHXDirSpecifier GetCurrentApplicationDir(void);

	static CHXDirSpecifier GetAppDataDir(const char* szAppName);

	// Macintosh-specific utilities
#if defined(_MACINTOSH) || defined(_MAC_UNIX)
	static FOURCC GetFileType(const CHXFileSpecifier& fileSpec);

	static CHXDirSpecifier MacFindFolder(short vRefNum, FolderType foldType);

	static CHXFileSpecifier SpecifyFileWithMacFindFolder(short vRefNum, FolderType foldType, const char *pszChildFile);
	static CHXDirSpecifier SpecifyFolderWithMacFindFolder(short vRefNum, FolderType foldType, const char *pszChildFolder);
	
	// Resolve will change the specifiers in place if they happened to point
	// to an alias file
	static HX_RESULT ResolveFileSpecifierAlias(CHXFileSpecifier& fileSpec);
	static HX_RESULT ResolveDirSpecifierAlias(CHXDirSpecifier& dirSpec);

	// MoveFileToTrash, MoveFolderToTrash
	
	// These move the file to the trash if possible, or else delete the file.
	
	static HX_RESULT MoveFileToTrash(const CHXFileSpecifier& fileSpec);
	static HX_RESULT MoveFolderToTrash(const CHXDirSpecifier& dirSpec);
	
	// MoveFileToCleaupAtStartup, MoveFolderToCleaupAtStartup
	
	// These move the file to the trash if possible, or else delete the file.
	// Non-const version updates the specifier after the file is moved
	
	static HX_RESULT MoveFileToCleanupAtStartup(const CHXFileSpecifier& fileSpec, BOOL bDeleteIfCantMove = TRUE);
	static HX_RESULT MoveFolderToCleanupAtStartup(const CHXDirSpecifier& dirSpec, BOOL bDeleteIfCantMove = TRUE);

	static HX_RESULT MoveFileToCleanupAtStartup(CHXFileSpecifier& fileSpec, BOOL bDeleteIfCantMove = TRUE);
	static HX_RESULT MoveFolderToCleanupAtStartup(CHXDirSpecifier& dirSpec, BOOL bDeleteIfCantMove = TRUE);
	
	// MoveFileToFolderWithRenaming, MoveFolderToFolderWithRenaming
	
	// These move the item to the target folder, renaming the item if necessary. For example,
	// if the file is called "filename" and the destination already has a "filename", the file
	// is renamed "filename_2".
	
	static HX_RESULT MoveFileToFolderWithRenaming(CHXFileSpecifier& fileSpec, const CHXDirSpecifier& targetSpec, BOOL bDeleteIfCantMove);
	static HX_RESULT MoveFolderToFolderWithRenaming(CHXDirSpecifier& dirSpec, const CHXDirSpecifier& targetSpec, BOOL bDeleteIfCantMove);

	#ifdef _DEBUG
		static void TestMacFileSpecUtils();
	#endif

#endif // _MACINTOSH

};

#endif // FILESPECUTILS_H