/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #ifndef INCLUDED_OSL_FILE_HXX #define INCLUDED_OSL_FILE_HXX #include #include #include #include #include #include #include #include #include #include namespace osl { /** Base class for all File System specific objects. @see Directory @see DirectoryItem @see File */ class FileBase { public: enum RC { E_None = osl_File_E_None, E_PERM = osl_File_E_PERM, E_NOENT = osl_File_E_NOENT, E_SRCH = osl_File_E_SRCH, E_INTR = osl_File_E_INTR, E_IO = osl_File_E_IO, E_NXIO = osl_File_E_NXIO, E_2BIG = osl_File_E_2BIG, E_NOEXEC = osl_File_E_NOEXEC, E_BADF = osl_File_E_BADF, E_CHILD = osl_File_E_CHILD, E_AGAIN = osl_File_E_AGAIN, E_NOMEM = osl_File_E_NOMEM, E_ACCES = osl_File_E_ACCES, E_FAULT = osl_File_E_FAULT, E_BUSY = osl_File_E_BUSY, E_EXIST = osl_File_E_EXIST, E_XDEV = osl_File_E_XDEV, E_NODEV = osl_File_E_NODEV, E_NOTDIR = osl_File_E_NOTDIR, E_ISDIR = osl_File_E_ISDIR, E_INVAL = osl_File_E_INVAL, E_NFILE = osl_File_E_NFILE, E_MFILE = osl_File_E_MFILE, E_NOTTY = osl_File_E_NOTTY, E_FBIG = osl_File_E_FBIG, E_NOSPC = osl_File_E_NOSPC, E_SPIPE = osl_File_E_SPIPE, E_ROFS = osl_File_E_ROFS, E_MLINK = osl_File_E_MLINK, E_PIPE = osl_File_E_PIPE, E_DOM = osl_File_E_DOM, E_RANGE = osl_File_E_RANGE, E_DEADLK = osl_File_E_DEADLK, E_NAMETOOLONG = osl_File_E_NAMETOOLONG, E_NOLCK = osl_File_E_NOLCK, E_NOSYS = osl_File_E_NOSYS, E_NOTEMPTY = osl_File_E_NOTEMPTY, E_LOOP = osl_File_E_LOOP, E_ILSEQ = osl_File_E_ILSEQ, E_NOLINK = osl_File_E_NOLINK, E_MULTIHOP = osl_File_E_MULTIHOP, E_USERS = osl_File_E_USERS, E_OVERFLOW = osl_File_E_OVERFLOW, E_NOTREADY = osl_File_E_NOTREADY, E_invalidError = osl_File_E_invalidError, /* unmapped error: always last entry in enum! */ E_TIMEDOUT = osl_File_E_TIMEDOUT, E_NETWORK = osl_File_E_NETWORK }; public: /** Determine a valid unused canonical name for a requested name. Determines a valid unused canonical name for a requested name. Depending on the Operating System and the File System the illegal characters are replaced by valid ones. If a file or directory with the requested name already exists a new name is generated following the common rules on the actual Operating System and File System. @param ustrRequestedURL [in] Requested name of a file or directory. @param ustrValidURL [out] On success receives a name which is unused and valid on the actual Operating System and File System. @return E_None on success E_INVAL the format of the parameters was not valid @see DirectoryItem::getFileStatus() */ static inline RC getCanonicalName( const ::rtl::OUString& ustrRequestedURL, ::rtl::OUString& ustrValidURL ) { return static_cast< RC >( osl_getCanonicalName( ustrRequestedURL.pData, &ustrValidURL.pData ) ); } /** Convert a path relative to a given directory into an full qualified file URL. Convert a path relative to a given directory into an full qualified file URL. The function resolves symbolic links if possible and path ellipses, so on success the resulting absolute path is fully resolved. @param ustrBaseDirectoryURL [in] Base directory URL to which the relative path is related to. @param ustrRelativeFileURL [in] An URL of a file or directory relative to the directory path specified by ustrBaseDirectoryURL or an absolute path. If ustrRelativeFileURL denotes an absolute path ustrBaseDirectoryURL will be ignored. @param ustrAbsoluteFileURL [out] On success it receives the full qualified absolute file URL. @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_NOTDIR not a directory E_ACCES permission denied E_NOENT no such file or directory E_NAMETOOLONG file name too long E_OVERFLOW value too large for defined data type E_FAULT bad address E_INTR function call was interrupted E_LOOP too many symbolic links encountered E_MULTIHOP multihop attempted E_NOLINK link has been severed @see DirectoryItem::getFileStatus() */ static inline RC getAbsoluteFileURL( const ::rtl::OUString& ustrBaseDirectoryURL, const ::rtl::OUString& ustrRelativeFileURL, ::rtl::OUString& ustrAbsoluteFileURL ) { return static_cast< RC >( osl_getAbsoluteFileURL( ustrBaseDirectoryURL.pData, ustrRelativeFileURL.pData, &ustrAbsoluteFileURL.pData ) ); } /** Convert a file URL into a system dependent path. @param ustrFileURL [in] A File URL. @param ustrSystemPath [out] On success it receives the system path. @return E_None on success E_INVAL the format of the parameters was not valid @see getFileURLFromSystemPath() */ static inline RC getSystemPathFromFileURL( const ::rtl::OUString& ustrFileURL, ::rtl::OUString& ustrSystemPath ) { return static_cast< RC >( osl_getSystemPathFromFileURL( ustrFileURL.pData, &ustrSystemPath.pData ) ); } /** Convert a system dependent path into a file URL. @param ustrSystemPath [in] A System dependent path of a file or directory. @param ustrFileURL [out] On success it receives the file URL. @return E_None on success E_INVAL the format of the parameters was not valid @see getSystemPathFromFileURL() */ static inline RC getFileURLFromSystemPath( const ::rtl::OUString& ustrSystemPath, ::rtl::OUString& ustrFileURL ) { return static_cast< RC >( osl_getFileURLFromSystemPath( ustrSystemPath.pData, &ustrFileURL.pData ) ); } /** Searche a full qualified system path or a file URL. @param ustrFileName [in] A system dependent path, a file URL, a file or relative directory @param ustrSearchPath [in] A list of system paths, in which a given file has to be searched. The Notation of a path list is system dependent, e.g. on UNIX system "/usr/bin:/bin" and on Windows "C:\BIN;C:\BATCH". These paths are only for the search of a file or a relative path, otherwise it will be ignored. If ustrSearchPath is NULL or while using the search path the search failed, the function searches for a matching file in all system directories and in the directories listed in the PATH environment variable. The value of an environment variable should be used (e.g. LD_LIBRARY_PATH) if the caller is not aware of the Operating System and so doesn't know which path list delimiter to use. @param ustrFileURL [out] On success it receives the full qualified file URL. @return E_None on success E_INVAL the format of the parameters was not valid E_NOTDIR not a directory E_NOENT no such file or directory not found @see getFileURLFromSystemPath() @see getSystemPathFromFileURL() */ static inline RC searchFileURL( const ::rtl::OUString& ustrFileName, const ::rtl::OUString& ustrSearchPath, ::rtl::OUString& ustrFileURL ) { return static_cast< RC >( osl_searchFileURL( ustrFileName.pData, ustrSearchPath.pData, &ustrFileURL.pData ) ); } /** Retrieves the file URL of the system's temporary directory path. @param[out] ustrTempDirURL On success receives the URL of system's temporary directory path. @return E_None on success E_NOENT no such file or directory not found */ static inline RC getTempDirURL( ::rtl::OUString& ustrTempDirURL ) { return static_cast< RC >( osl_getTempDirURL( &ustrTempDirURL.pData ) ); } /** Creates a temporary file in the directory provided by the caller or the directory returned by getTempDirURL. Under UNIX Operating Systems the file will be created with read and write access for the user exclusively. If the caller requests only a handle to the open file but not the name of it, the file will be automatically removed on close else the caller is responsible for removing the file on success.

@param pustrDirectoryURL [in] Specifies the full qualified URL where the temporary file should be created. If pustrDirectoryURL is 0 the path returned by osl_getTempDirURL will be used. @param pHandle [out] On success receives a handle to the open file. If pHandle is 0 the file will be closed on return, in this case pustrTempFileURL must not be 0. @param pustrTempFileURL [out] On success receives the full qualified URL of the temporary file. If pustrTempFileURL is 0 the file will be automatically removed on close, in this case pHandle must not be 0. If pustrTempFileURL is not 0 the caller receives the name of the created file and is responsible for removing the file. Description of the different pHandle, ppustrTempFileURL parameter combinations. pHandle is 0 and pustrTempDirURL is 0 - this combination is invalid
pHandle is not 0 and pustrTempDirURL is 0 - a handle to the open file will be returned on success and the file will be automatically removed on close
pHandle is 0 and pustrTempDirURL is not 0 - the name of the file will be returned, the caller is responsible for opening, closing and removing the file.
pHandle is not 0 and pustrTempDirURL is not 0 - a handle to the open file as well as the file name will be returned, the caller is responsible for closing and removing the file.
@return E_None on success E_INVAL the format of the parameter is invalid E_NOMEM not enough memory for allocating structures E_ACCES Permission denied E_NOENT No such file or directory E_NOTDIR Not a directory E_ROFS Read-only file system E_NOSPC No space left on device E_DQUOT Quota exceeded @see getTempDirURL() */ static inline RC createTempFile( ::rtl::OUString* pustrDirectoryURL, oslFileHandle* pHandle, ::rtl::OUString* pustrTempFileURL) { rtl_uString* pustr_dir_url = pustrDirectoryURL ? pustrDirectoryURL->pData : 0; rtl_uString** ppustr_tmp_file_url = pustrTempFileURL ? &pustrTempFileURL->pData : 0; return static_cast< RC >( osl_createTempFile(pustr_dir_url, pHandle, ppustr_tmp_file_url) ); } }; /** The VolumeDevice class. @see VolumeInfo */ class VolumeDevice : public FileBase { oslVolumeDeviceHandle _aHandle; public: /** Constructor. */ VolumeDevice() : _aHandle( NULL ) { } /** Copy constructor. @param rDevice The other volume device. */ VolumeDevice( const VolumeDevice & rDevice ) { _aHandle = rDevice._aHandle; if ( _aHandle ) osl_acquireVolumeDeviceHandle( _aHandle ); } /** Destructor. */ ~VolumeDevice() { if ( _aHandle ) osl_releaseVolumeDeviceHandle( _aHandle ); } /** Assignment operator. @param rDevice The other volume device. */ inline VolumeDevice & operator =( const VolumeDevice & rDevice ) { oslVolumeDeviceHandle newHandle = rDevice._aHandle; if ( newHandle ) osl_acquireVolumeDeviceHandle( newHandle ); if ( _aHandle ) osl_releaseVolumeDeviceHandle( _aHandle ); _aHandle = newHandle; return *this; } /** Get the full qualified URL where a device is mounted to. @return The full qualified URL where the device is mounted to. */ inline rtl::OUString getMountPath() { rtl::OUString aPath; osl_getVolumeDeviceMountPath( _aHandle, &aPath.pData ); return aPath; } friend class VolumeInfo; }; class Directory; /** The VolumeInfo class. Neither copy nor assignment is allowed for this class. @see Directory::getVolumeInfo */ class VolumeInfo { oslVolumeInfo _aInfo; sal_uInt32 _nMask; VolumeDevice _aDevice; /** Copy constructor. */ VolumeInfo( VolumeInfo& ) SAL_DELETED_FUNCTION; /** Assginment operator. */ VolumeInfo& operator = ( VolumeInfo& ) SAL_DELETED_FUNCTION; public: /** Constructor. @param nMask Set of flags describing the demanded information. */ VolumeInfo( sal_uInt32 nMask ) : _nMask( nMask ) { memset( &_aInfo, 0, sizeof( oslVolumeInfo )); _aInfo.uStructSize = sizeof( oslVolumeInfo ); _aInfo.pDeviceHandle = &_aDevice._aHandle; } /** Destructor. */ ~VolumeInfo() { if( _aInfo.ustrFileSystemName ) rtl_uString_release( _aInfo.ustrFileSystemName ); } /** Check if specified fields are valid. @param nMask Set of flags for the fields to check. @return true if all fields are valid else false. */ inline bool isValid( sal_uInt32 nMask ) const { return ( nMask & _aInfo.uValidFields ) == nMask; } /** Check the remote flag. @return true if Attributes are valid and the volume is remote else false. */ inline bool getRemoteFlag() const { return 0 != (_aInfo.uAttributes & osl_Volume_Attribute_Remote); } /** Check the removeable flag. @return true if attributes are valid and the volume is removable else false. */ inline bool getRemoveableFlag() const { return 0 != (_aInfo.uAttributes & osl_Volume_Attribute_Removeable); } /** Check the compact disc flag. @return true if attributes are valid and the volume is a CDROM else false. */ inline bool getCompactDiscFlag() const { return 0 != (_aInfo.uAttributes & osl_Volume_Attribute_CompactDisc); } /** Check the floppy disc flag. @return true if attributes are valid and the volume is a floppy disk else false. */ inline bool getFloppyDiskFlag() const { return 0 != (_aInfo.uAttributes & osl_Volume_Attribute_FloppyDisk); } /** Check the fixed disk flag. @return true if attributes are valid and the volume is a fixed disk else false. */ inline bool getFixedDiskFlag() const { return 0 != (_aInfo.uAttributes & osl_Volume_Attribute_FixedDisk); } /** Check the RAM disk flag. @return true if attributes are valid and the volume is a RAM disk else false. */ inline bool getRAMDiskFlag() const { return 0 != (_aInfo.uAttributes & osl_Volume_Attribute_RAMDisk); } /** Determine the total space of a volume device. @return The total diskspace of this volume if this information is valid, 0 otherwise. */ inline sal_uInt64 getTotalSpace() const { return _aInfo.uTotalSpace; } /** Determine the free space of a volume device. @return The free diskspace of this volume if this information is valid, 0 otherwise. */ inline sal_uInt64 getFreeSpace() const { return _aInfo.uFreeSpace; } /** Determine the used space of a volume device. @return The used diskspace of this volume if this information is valid, 0 otherwise. */ inline sal_uInt64 getUsedSpace() const { return _aInfo.uUsedSpace; } /** Determine the maximal length of a file name. @return The maximal length of a file name if this information is valid, 0 otherwise. */ inline sal_uInt32 getMaxNameLength() const { return _aInfo.uMaxNameLength; } /** Determine the maximal length of a path name. @return The maximal length of a path if this information is valid, 0 otherwise. */ inline sal_uInt32 getMaxPathLength() const { return _aInfo.uMaxPathLength; } /** Determine the name of the volume device's File System. @return The name of the volume's fielsystem if this information is valid, otherwise an empty string. */ inline ::rtl::OUString getFileSystemName() const { return _aInfo.ustrFileSystemName ? ::rtl::OUString( _aInfo.ustrFileSystemName ) : ::rtl::OUString(); } /** Get the volume device handle. @return The device handle of the volume if this information is valid, otherwise returns NULL; */ inline VolumeDevice getDeviceHandle() const { return _aDevice; } /** Return whether the file system is case sensitive or case insensitive @return true if the file system is case sensitive false otherwise */ bool isCaseSensitiveFileSystem() const { return (_aInfo.uAttributes & osl_Volume_Attribute_Case_Sensitive) != 0; } /** Return whether the file system preserves the case of file and directory names or not @return true if the file system preserves the case of file and directory names false otherwise */ bool isCasePreservingFileSystem() const { return (_aInfo.uAttributes & osl_Volume_Attribute_Case_Is_Preserved) != 0; } friend class Directory; }; class DirectoryItem; /** The FileStatus class. @see DirectoryItem::getFileStatus */ class FileStatus { oslFileStatus _aStatus; sal_uInt32 _nMask; /** Copy constructor. */ FileStatus( FileStatus& ) SAL_DELETED_FUNCTION; /** Assignment operator. */ FileStatus& operator = ( FileStatus& ) SAL_DELETED_FUNCTION; public: enum Type { Directory = osl_File_Type_Directory, Volume = osl_File_Type_Volume, Regular = osl_File_Type_Regular, Fifo = osl_File_Type_Fifo, Socket = osl_File_Type_Socket, Link = osl_File_Type_Link, Special = osl_File_Type_Special, Unknown = osl_File_Type_Unknown }; /** Constructor. @param nMask Set of flags describing the demanded information. */ FileStatus(sal_uInt32 nMask) : _nMask(nMask) { memset(&_aStatus, 0, sizeof(_aStatus)); _aStatus.uStructSize = sizeof(_aStatus); } /** Destructor. */ ~FileStatus() { if ( _aStatus.ustrFileURL ) rtl_uString_release( _aStatus.ustrFileURL ); if ( _aStatus.ustrLinkTargetURL ) rtl_uString_release( _aStatus.ustrLinkTargetURL ); if ( _aStatus.ustrFileName ) rtl_uString_release( _aStatus.ustrFileName ); } /** Check if specified fields are valid. @param nMask Set of flags for the fields to check. @return true if all fields are valid else false. */ inline bool isValid( sal_uInt32 nMask ) const { return ( nMask & _aStatus.uValidFields ) == nMask; } /** Get the file type. @return The file type. */ inline Type getFileType() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_Type), "sal.osl", "no FileStatus Type determined"); return isValid(osl_FileStatus_Mask_Type) ? static_cast< Type >(_aStatus.eType) : Unknown; } /** Is it a directory? This method returns True for both directories, and volumes. @return True if it's a directory, False otherwise. @see getFileType @since LibreOffice 3.6 */ inline bool isDirectory() const { return ( getFileType() == Directory || getFileType() == Volume ); } /** Is it a regular file? @return True if it's a regular file, False otherwise. @see getFileType @see isFile @see isLink @since LibreOffice 3.6 */ inline bool isRegular() const { return ( getFileType() == Regular ); } /** Is it a link? @return True if it's a link, False otherwise. @see getFileType @since LibreOffice 3.6 */ inline bool isLink() const { return ( getFileType() == Link ); } /** Get the file attributes. @return The set of attribute flags of this file. */ inline sal_uInt64 getAttributes() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_Attributes), "sal.osl", "no FileStatus Attributes determined"); return _aStatus.uAttributes; } /** Get the creation time of this file. @return The creation time if this information is valid, an uninitialized TimeValue otherwise. */ inline TimeValue getCreationTime() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_CreationTime), "sal.osl", "no FileStatus CreationTime determined"); return _aStatus.aCreationTime; } /** Get the file access time. @return The last access time if this information is valid, an uninitialized TimeValue otherwise. */ inline TimeValue getAccessTime() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_AccessTime), "sal.osl", "no FileStatus AccessTime determined"); return _aStatus.aAccessTime; } /** Get the file modification time. @return The last modified time if this information is valid, an uninitialized TimeValue otherwise. */ inline TimeValue getModifyTime() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_ModifyTime), "sal.osl", "no FileStatus ModifyTime determined"); return _aStatus.aModifyTime; } /** Get the size of the file. @return The actual file size if this information is valid, 0 otherwise. */ inline sal_uInt64 getFileSize() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_FileSize), "sal.osl", "no FileStatus FileSize determined"); return _aStatus.uFileSize; } /** Get the file name. @return The file name if this information is valid, an empty string otherwise. */ inline ::rtl::OUString getFileName() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_FileName), "sal.osl", "no FileStatus FileName determined"); return isValid(osl_FileStatus_Mask_FileName) ? rtl::OUString(_aStatus.ustrFileName) : rtl::OUString(); } /** Get the URL of the file. @return The full qualified URL of the file if this information is valid, an empty string otherwise. */ inline ::rtl::OUString getFileURL() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_FileURL), "sal.osl", "no FileStatus FileURL determined"); return isValid(osl_FileStatus_Mask_FileURL) ? rtl::OUString(_aStatus.ustrFileURL) : rtl::OUString(); } /** Get the link target URL. @return The link target URL if this information is valid, an empty string otherwise. */ inline ::rtl::OUString getLinkTargetURL() const { SAL_INFO_IF( !isValid(osl_FileStatus_Mask_LinkTargetURL), "sal.osl", "no FileStatus LinkTargetURL determined"); return isValid(osl_FileStatus_Mask_LinkTargetURL) ? rtl::OUString(_aStatus.ustrLinkTargetURL) : rtl::OUString(); } friend class DirectoryItem; }; /** The file class object provides access to file contents and attributes. @see Directory @see DirectoryItem */ class File: public FileBase { oslFileHandle _pData; ::rtl::OUString _aPath; /** Copy constructor. */ File( File& ) SAL_DELETED_FUNCTION; /** Assginment operator. */ File& operator = ( File& ) SAL_DELETED_FUNCTION; public: /** Constructor. @param ustrFileURL [in] The full qualified URL of the file. Relative paths are not allowed. */ File( const ::rtl::OUString& ustrFileURL ): _pData( 0 ), _aPath( ustrFileURL ) {} /** Destructor */ inline ~File() { close(); } /** Obtain the URL. @return the URL with which this File instance was created. @since LibreOffice 4.1 */ inline rtl::OUString getURL() const { return _aPath; } /** Open a regular file. Open a file. Only regular files can be openend. @param uFlags [in] Specifies the open mode. @return E_None on success E_NOMEM not enough memory for allocating structures E_INVAL the format of the parameters was not valid E_NAMETOOLONG pathname was too long E_NOENT no such file or directory E_ACCES permission denied E_AGAIN a write lock could not be established E_NOTDIR not a directory E_NXIO no such device or address E_NODEV no such device E_ROFS read-only file system E_TXTBSY text file busy E_FAULT bad address E_LOOP too many symbolic links encountered E_NOSPC no space left on device E_ISDIR is a directory E_MFILE too many open files used by the process E_NFILE too many open files in the system E_DQUOT quota exceeded E_EXIST file exists E_INTR function call was interrupted E_IO on I/O errors E_MULTIHOP multihop attempted E_NOLINK link has been severed E_EOVERFLOW value too large for defined data type @see close() @see setPos() @see getPos() @see read() @see write() @see getSize() @see setSize() */ inline RC open( sal_uInt32 uFlags ) { return static_cast< RC >( osl_openFile( _aPath.pData, &_pData, uFlags ) ); } /** Close an open file. @return E_None on success E_INVAL the format of the parameters was not valid E_BADF Bad file E_INTR function call was interrupted E_NOLINK link has been severed E_NOSPC no space left on device E_IO on I/O errors @see open() */ inline RC close() { oslFileError Error = osl_File_E_BADF; if( _pData ) { Error=osl_closeFile( _pData ); _pData = NULL; } return static_cast< RC >( Error ); } /** Set the internal position pointer of an open file. @param uHow [in] Distance to move the internal position pointer (from uPos). @param uPos [in] Absolute position from the beginning of the file. @return E_None on success E_INVAL the format of the parameters was not valid E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files @see open() @see getPos() */ inline RC setPos( sal_uInt32 uHow, sal_Int64 uPos ) SAL_WARN_UNUSED_RESULT { return static_cast< RC >( osl_setFilePos( _pData, uHow, uPos ) ); } /** Retrieve the current position of the internal pointer of an open file. @param uPos [out] On success receives the current position of the file pointer. @return E_None on success E_INVAL the format of the parameters was not valid E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files @see open() @see setPos() @see read() @see write() */ inline RC getPos( sal_uInt64& uPos ) { return static_cast< RC >( osl_getFilePos( _pData, &uPos ) ); } /** Test if the end of a file is reached. @param pIsEOF [out] Points to a variable that receives the end-of-file status. @return E_None on success E_INVAL the format of the parameters was not valid E_INTR function call was interrupted E_IO on I/O errors E_ISDIR is a directory E_BADF bad file E_FAULT bad address E_AGAIN operation would block E_NOLINK link has been severed @see open() @see read() @see readLine() @see setPos() */ inline RC isEndOfFile( sal_Bool *pIsEOF ) { return static_cast< RC >( osl_isEndOfFile( _pData, pIsEOF ) ); } /** Set the file size of an open file. Sets the file size of an open file. The file can be truncated or enlarged by the function. The position of the file pointer is not affeced by this function. @param uSize [in] New size in bytes. @return E_None on success E_INVAL the format of the parameters was not valid E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files @see open() @see setPos() @see getStatus() */ inline RC setSize( sal_uInt64 uSize ) { return static_cast< RC >( osl_setFileSize( _pData, uSize ) ); } /** Get the file size of an open file. Gets the file size of an open file. The position of the file pointer is not affeced by this function. @param rSize [out] Current size in bytes. @return E_None on success E_INVAL the format of the parameters was not valid E_OVERFLOW the resulting file offset would be a value which cannot be represented correctly for regular files @see open() @see setPos() @see getSize() @see setSize() @see getStatus() */ inline RC getSize( sal_uInt64 &rSize ) { return static_cast< RC >( osl_getFileSize( _pData, &rSize ) ); } /** Read a number of bytes from a file. Reads a number of bytes from a file. The internal file pointer is increased by the number of bytes read. @param pBuffer [out] Points to a buffer which receives data. The buffer must be large enough to hold uBytesRequested bytes. @param uBytesRequested [in] Number of bytes which should be retrieved. @param rBytesRead [out] On success the number of bytes which have actually been retrieved. @return E_None on success E_INVAL the format of the parameters was not valid E_INTR function call was interrupted E_IO on I/O errors E_ISDIR is a directory E_BADF bad file E_FAULT bad address E_AGAIN operation would block E_NOLINK link has been severed @see open() @see write() @see readLine() @see setPos() */ inline RC read( void *pBuffer, sal_uInt64 uBytesRequested, sal_uInt64& rBytesRead ) { return static_cast< RC >( osl_readFile( _pData, pBuffer, uBytesRequested, &rBytesRead ) ); } /** Write a number of bytes to a file. Writes a number of bytes to a file. The internal file pointer is increased by the number of bytes read. @param pBuffer [in] Points to a buffer which contains the data. @param uBytesToWrite [in] Number of bytes which should be written. @param rBytesWritten [out] On success the number of bytes which have actually been written. @return E_None on success E_INVAL the format of the parameters was not valid E_FBIG file too large E_DQUOT quota exceeded E_AGAIN operation would block E_BADF bad file E_FAULT bad address E_INTR function call was interrupted E_IO on I/O errosr E_NOLCK no record locks available E_NOLINK link has been severed E_NOSPC no space left on device E_NXIO no such device or address @see open() @see read() @see setPos() */ inline RC write(const void *pBuffer, sal_uInt64 uBytesToWrite, sal_uInt64& rBytesWritten) { return static_cast< RC >( osl_writeFile( _pData, pBuffer, uBytesToWrite, &rBytesWritten ) ); } /** Read a line from a file. Reads a line from a file. The new line delimiter is NOT returned! @param aSeq [in/out] A reference to a ::rtl::ByteSequence that will hold the line read on success. @return E_None on success E_INVAL the format of the parameters was not valid E_INTR function call was interrupted E_IO on I/O errors E_ISDIR is a directory E_BADF bad file E_FAULT bad address E_AGAIN operation would block E_NOLINK link has been severed @see open() @see read() @see write() @see setPos() */ inline RC readLine( ::rtl::ByteSequence& aSeq ) { return static_cast< RC >( osl_readLine( _pData, reinterpret_cast(&aSeq) ) ); } /** Synchronize the memory representation of a file with that on the physical medium. The function ensures that all modified data and attributes of the file associated with the given file handle have been written to the physical medium. In case the hard disk has a write cache enabled, the data may not really be on permanent storage when osl_syncFile returns. @return
E_None
On success
E_INVAL
The value of the input parameter is invalid

In addition to these error codes others may occur as well, for instance:


E_BADF
The file is not open for writing
E_IO
An I/O error occurred
E_NOSPC
There is no enough space on the target device
E_ROFS
The file is located on a read only file system
E_TIMEDOUT
A remote connection timed out. This may happen when a file is on a remote location
@see osl_syncFile() @see open() @see write() */ inline RC sync() const { OSL_PRECOND(_pData, "File::sync(): File not open"); return static_cast< RC >(osl_syncFile(_pData)); } /** Copy a file to a new destination. Copies a file to a new destination. Copies only files not directories. No assumptions should be made about preserving attributes or file time. @param ustrSourceFileURL [in] Full qualified URL of the source file. @param ustrDestFileURL [in] Full qualified URL of the destination file. A directory is NOT a valid destination file! @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_ACCES permission denied E_PERM operation not permitted E_NAMETOOLONG file name too long E_NOENT no such file or directory E_ISDIR is a directory E_ROFS read-only file system @see move() @see remove() */ inline static RC copy( const ::rtl::OUString& ustrSourceFileURL, const ::rtl::OUString& ustrDestFileURL ) { return static_cast< RC >( osl_copyFile( ustrSourceFileURL.pData, ustrDestFileURL.pData ) ); } /** Move a file or directory to a new destination or renames it. Moves a file or directory to a new destination or renames it. File time and attributes are preserved. @param ustrSourceFileURL [in] Full qualified URL of the source file. @param ustrDestFileURL [in] Full qualified URL of the destination file. An existing directory is NOT a valid destination ! @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_ACCES permission denied E_PERM operation not permitted E_NAMETOOLONG file name too long E_NOENT no such file or directory E_ROFS read-only file system @see copy() */ inline static RC move( const ::rtl::OUString& ustrSourceFileURL, const ::rtl::OUString& ustrDestFileURL ) { return static_cast< RC >( osl_moveFile( ustrSourceFileURL.pData, ustrDestFileURL.pData ) ); } /** Remove a regular file. @param ustrFileURL [in] Full qualified URL of the file to remove. @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_ACCES permission denied E_PERM operation not permitted E_NAMETOOLONG file name too long E_NOENT no such file or directory E_ISDIR is a directory E_ROFS read-only file system E_FAULT bad address E_LOOP too many symbolic links encountered E_IO on I/O errors E_BUSY device or resource busy E_INTR function call was interrupted E_LOOP too many symbolic links encountered E_MULTIHOP multihop attempted E_NOLINK link has been severed E_TXTBSY text file busy @see open() */ inline static RC remove( const ::rtl::OUString& ustrFileURL ) { return static_cast< RC >( osl_removeFile( ustrFileURL.pData ) ); } /** Set file attributes. @param ustrFileURL [in] The full qualified file URL. @param uAttributes [in] Attributes of the file to be set. @return E_None on success E_INVAL the format of the parameters was not valid @see FileStatus */ inline static RC setAttributes( const ::rtl::OUString& ustrFileURL, sal_uInt64 uAttributes ) { return static_cast< RC >( osl_setFileAttributes( ustrFileURL.pData, uAttributes ) ); } /** Set the file time. @param ustrFileURL [in] The full qualified URL of the file. @param rCreationTime [in] Creation time of the given file. @param rLastAccessTime [in] Time of the last access of the given file. @param rLastWriteTime [in] Time of the last modifying of the given file. @return E_None on success E_INVAL the format of the parameters was not valid E_NOENT no such file or directory not found @see FileStatus */ inline static RC setTime( const ::rtl::OUString& ustrFileURL, const TimeValue& rCreationTime, const TimeValue& rLastAccessTime, const TimeValue& rLastWriteTime ) { return static_cast< RC >( osl_setFileTime( ustrFileURL.pData, &rCreationTime, &rLastAccessTime, &rLastWriteTime ) ); } friend class DirectoryItem; }; /** The directory item class object provides access to file status information. @see FileStatus */ class DirectoryItem: public FileBase { oslDirectoryItem _pData; public: /** Constructor. */ DirectoryItem(): _pData( NULL ) { } /** Copy constructor. */ DirectoryItem( const DirectoryItem& rItem ): _pData( rItem._pData) { if( _pData ) osl_acquireDirectoryItem( _pData ); } /** Destructor. */ ~DirectoryItem() { if( _pData ) osl_releaseDirectoryItem( _pData ); } /** Assignment operator. */ DirectoryItem& operator=(const DirectoryItem& rItem ) { if (&rItem != this) { if( _pData ) osl_releaseDirectoryItem( _pData ); _pData = rItem._pData; if( _pData ) osl_acquireDirectoryItem( _pData ); } return *this; } /** Check for validity of this instance. @return true if object is valid directory item else false. */ inline bool is() { return _pData != NULL; } /** Retrieve a single directory item. Retrieves a single directory item. The returned handle has an initial refcount of 1. Due to performance issues it is not recommended to use this function while enumerating the contents of a directory. In this case use osl_getNextDirectoryItem() instead. @param ustrFileURL [in] An absolute file URL. @param rItem [out] On success it receives a handle which can be used for subsequent calls to osl_getFileStatus(). The handle has to be released by a call to osl_releaseDirectoryItem(). @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_ACCES permission denied E_MFILE too many open files used by the process E_NFILE too many open files in the system E_NOENT no such file or directory E_LOOP too many symbolic links encountered E_NAMETOOLONG the file name is too long E_NOTDIR a component of the path prefix of path is not a directory E_IO on I/O errors E_MULTIHOP multihop attempted E_NOLINK link has been severed E_FAULT bad address E_INTR the function call was interrupted @see FileStatus @see Directory::getNextItem() */ static inline RC get( const ::rtl::OUString& ustrFileURL, DirectoryItem& rItem ) { if( rItem._pData) { osl_releaseDirectoryItem( rItem._pData ); rItem._pData = NULL; } return static_cast< RC >( osl_getDirectoryItem( ustrFileURL.pData, &rItem._pData ) ); } /** Retrieve information about a single file or directory. @param rStatus [in|out] Reference to a class which receives the information of the file or directory represented by this directory item. @return E_None on success E_NOMEM not enough memory for allocating structures E_INVAL the format of the parameters was not valid E_LOOP too many symbolic links encountered E_ACCES permission denied E_NOENT no such file or directory E_NAMETOOLONG file name too long E_BADF invalid oslDirectoryItem parameter E_FAULT bad address E_OVERFLOW value too large for defined data type E_INTR function call was interrupted E_NOLINK link has been severed E_MULTIHOP components of path require hopping to multiple remote machines and the file system does not allow it E_MFILE too many open files used by the process E_NFILE too many open files in the system E_NOSPC no space left on device E_NXIO no such device or address E_IO on I/O errors E_NOSYS function not implemented @see get() @see Directory::getNextItem() @see FileStatus */ inline RC getFileStatus( FileStatus& rStatus ) { return static_cast< RC >( osl_getFileStatus( _pData, &rStatus._aStatus, rStatus._nMask ) ); } /** Determine if a directory item point the same underlying file The comparison is done first by URL, and then by resolving links to find the target, and finally by comparing inodes on unix. @param[in] pOther A directory handle to compare with the underlying object's item @return true: if the items point to an identical resource
false: if the items point to a different resource, or a fatal error occurred
@see osl_getDirectoryItem() @since LibreOffice 3.6 */ inline bool isIdenticalTo( const DirectoryItem &pOther ) { return osl_identicalDirectoryItem( _pData, pOther._pData ); } friend class Directory; }; /** Base class for observers of directory creation notifications. Clients which uses the method createDirectoryPath of the class Directory may want to be informed about the directories that have been created. This may be accomplished by deriving from this base class and overwriting the virtual function DirectoryCreated. @see Directory::createPath */ class DirectoryCreationObserver { public: virtual ~DirectoryCreationObserver() {} /** This method will be called when a new directory has been created and needs to be overwritten by derived classes. You must not delete the directory that was just created otherwise you will run into an endless loop. @param aDirectoryUrl [in]The absolute file URL of the directory that was just created by ::osl::Directory::createPath. */ virtual void DirectoryCreated(const rtl::OUString& aDirectoryUrl) = 0; }; // This just an internal helper function for // private use. extern "C" inline void SAL_CALL onDirectoryCreated(void* pData, rtl_uString* aDirectoryUrl) { (static_cast(pData))->DirectoryCreated(aDirectoryUrl); } /** The directory class object provides a enumeration of DirectoryItems. @see DirectoryItem @see File */ class Directory: public FileBase { oslDirectory _pData; ::rtl::OUString _aPath; /** Copy constructor. */ Directory( Directory& ) SAL_DELETED_FUNCTION; /** Assignment operator. */ Directory& operator = ( Directory& ) SAL_DELETED_FUNCTION; public: /** Constructor. @param strPath [in] The full qualified URL of the directory. Relative URLs are not allowed. */ Directory( const ::rtl::OUString& strPath ): _pData( 0 ), _aPath( strPath ) { } /** Destructor. */ ~Directory() { close(); } /** Obtain the URL. @return the URL with which this Directory instance was created. @since LibreOffice 4.1 */ inline rtl::OUString getURL() const { return _aPath; } /** Open a directory for enumerating its contents. @return E_None on success E_INVAL the format of the parameters was not valid E_NOENT the specified path doesn't exist E_NOTDIR the specified path is not an directory E_NOMEM not enough memory for allocating structures E_ACCES permission denied E_MFILE too many open files used by the process E_NFILE too many open files in the system E_NAMETOOLONG File name too long E_LOOP Too many symbolic links encountered @see getNextItem() @see close() */ inline RC open() { return static_cast< RC >( osl_openDirectory( _aPath.pData, &_pData ) ); } /** Query if directory is open. Query if directory is open and so item enumeration is valid. @return true if the directory is open else false. @see open() @see close() */ inline bool isOpen() { return _pData != NULL; } /** Close a directory. @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_BADF invalid oslDirectory parameter E_INTR the function call was interrupted @see open() */ inline RC close() { oslFileError Error = osl_File_E_BADF; if( _pData ) { Error=osl_closeDirectory( _pData ); _pData = NULL; } return static_cast< RC >( Error ); } /** Resets the directory item enumeration to the beginning. @return E_None on success E_INVAL the format of the parameters was not valid E_NOENT the specified path doesn't exist E_NOTDIR the specified path is not an directory E_NOMEM not enough memory for allocating structures E_ACCES permission denied E_MFILE too many open files used by the process E_NFILE too many open files in the system E_NAMETOOLONG File name too long E_LOOP Too many symbolic links encountered @see open() */ inline RC reset() { close(); return open(); } /** Retrieve the next item of a previously opened directory. Retrieves the next item of a previously opened directory. @param rItem [out] On success a valid DirectoryItem. @param nHint [in] With this parameter the caller can tell the implementation that (s)he is going to call this function uHint times afterwards. This enables the implementation to get the information for more than one file and cache it until the next calls. @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_NOENT no more entries in this directory E_BADF invalid oslDirectory parameter E_OVERFLOW the value too large for defined data type @see DirectoryItem */ inline RC getNextItem( DirectoryItem& rItem, sal_uInt32 nHint = 0 ) { if( rItem._pData ) { osl_releaseDirectoryItem( rItem._pData ); rItem._pData = 0; } return ( RC) osl_getNextDirectoryItem( _pData, &rItem._pData, nHint ); } /** Retrieve information about a volume. Retrieves information about a volume. A volume can either be a mount point, a network resource or a drive depending on Operating System and File System. @param ustrDirectoryURL [in] Full qualified URL of the volume @param rInfo [out] On success it receives information about the volume. @return E_None on success E_NOMEM not enough memory for allocating structures E_INVAL the format of the parameters was not valid E_NOTDIR not a directory E_NAMETOOLONG file name too long E_NOENT no such file or directory E_ACCES permission denied E_LOOP too many symbolic links encountered E_FAULT Bad address E_IO on I/O errors E_NOSYS function not implemented E_MULTIHOP multihop attempted E_NOLINK link has been severed E_INTR function call was interrupted @see FileStatus @see VolumeInfo */ inline static RC getVolumeInfo( const ::rtl::OUString& ustrDirectoryURL, VolumeInfo& rInfo ) { return static_cast< RC >( osl_getVolumeInformation( ustrDirectoryURL.pData, &rInfo._aInfo, rInfo._nMask ) ); } /** Create a directory. @param ustrDirectoryURL [in] Full qualified URL of the directory to create. @param flags [in] Optional flags, see osl_createDirectoryWithFlags for details. This defaulted parameter is new since LibreOffice 4.3. @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_EXIST file exists E_ACCES permission denied E_NAMETOOLONG file name too long E_NOENT no such file or directory E_NOTDIR not a directory E_ROFS read-only file system E_NOSPC no space left on device E_DQUOT quota exceeded E_LOOP too many symbolic links encountered E_FAULT bad address E_IO on I/O errors E_MLINK too many links E_MULTIHOP multihop attempted E_NOLINK link has been severed @see remove() */ inline static RC create( const ::rtl::OUString& ustrDirectoryURL, sal_uInt32 flags = osl_File_OpenFlag_Read | osl_File_OpenFlag_Write ) { return static_cast< RC >( osl_createDirectoryWithFlags( ustrDirectoryURL.pData, flags ) ); } /** Remove an empty directory. @param ustrDirectoryURL [in] Full qualified URL of the directory. @return E_None on success E_INVAL the format of the parameters was not valid E_NOMEM not enough memory for allocating structures E_PERM operation not permitted E_ACCES permission denied E_NOENT no such file or directory E_NOTDIR not a directory E_NOTEMPTY directory not empty E_FAULT bad address E_NAMETOOLONG file name too long E_BUSY device or resource busy E_ROFS read-only file system E_LOOP too many symbolic links encountered E_BUSY device or resource busy E_EXIST file exists E_IO on I/O errors E_MULTIHOP multihop attempted E_NOLINK link has been severed @see create() */ inline static RC remove( const ::rtl::OUString& ustrDirectoryURL ) { return static_cast< RC >( osl_removeDirectory( ustrDirectoryURL.pData ) ); } /** Create a directory path. The osl_createDirectoryPath function creates a specified directory path. All nonexisting sub directories will be created.

PLEASE NOTE: You cannot rely on getting the error code E_EXIST for existing directories. Programming against this error code is in general a strong indication of a wrong usage of osl_createDirectoryPath.

@param aDirectoryUrl [in] The absolute file URL of the directory path to create. A relative file URL will not be accepted. @param aDirectoryCreationObserver [in] Pointer to an instance of type DirectoryCreationObserver that will be informed about the creation of a directory. The value of this parameter may be NULL, in this case notifications will not be sent. @return
E_None
On success
E_INVAL
The format of the parameters was not valid
E_ACCES
Permission denied
E_EXIST
The final node of the specified directory path already exist
E_NAMETOOLONG
The name of the specified directory path exceeds the maximum allowed length
E_NOTDIR
A component of the specified directory path already exist as file in any part of the directory path
E_ROFS
Read-only file system
E_NOSPC
No space left on device
E_DQUOT
Quota exceeded
E_FAULT
Bad address
E_IO
I/O error
E_LOOP
Too many symbolic links encountered
E_NOLINK
Link has been severed
E_invalidError
An unknown error occurred
@see DirectoryCreationObserver @see create */ static RC createPath( const ::rtl::OUString& aDirectoryUrl, DirectoryCreationObserver* aDirectoryCreationObserver = NULL) { return static_cast< RC >(osl_createDirectoryPath( aDirectoryUrl.pData, (aDirectoryCreationObserver) ? onDirectoryCreated : NULL, aDirectoryCreationObserver)); } }; } /* namespace osl */ #endif // INCLUDED_OSL_FILE_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */