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tdelibs/tdeio/tdeio/karchive.h

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/* This file is part of the KDE libraries
Copyright (C) 2000 David Faure <faure@kde.org>
Copyright (C) 2003 Leo Savernik <l.savernik@aon.at>
Moved from ktar.h by Roberto Teixeira <maragato@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef __karchive_h
#define __karchive_h
#include <sys/stat.h>
#include <sys/types.h>
#include <tqdatetime.h>
#include <tqstring.h>
#include <tqstringlist.h>
#include <tqdict.h>
#include <tdelibs_export.h>
class KArchiveDirectory;
class KArchiveFile;
/**
* KArchive is a base class for reading and writing archives.
* @short generic class for reading/writing archives
* @author David Faure <faure@kde.org>
*/
class TDEIO_EXPORT KArchive
{
protected:
/**
* Base constructor (protected since this is a pure virtual class).
* @param dev the I/O device where the archive reads its data
* Note that this can be a file, but also a data buffer, a compression filter, etc.
*/
KArchive( TQIODevice * dev );
public:
virtual ~KArchive();
/**
* Opens the archive for reading or writing.
* Inherited classes might want to reimplement openArchive instead.
* @param mode may be IO_ReadOnly or IO_WriteOnly
* @see close
*/
virtual bool open( int mode );
/**
* Closes the archive.
* Inherited classes might want to reimplement closeArchive instead.
*
* @see open
*/
virtual void close();
/**
* Use to check if close had any problem
* @return true if close succeded without problems
* @since 3.5
*/
// TODO KDE4 merge with above
bool closeSucceeded() const;
/**
* Checks whether the archive is open.
* @return true if the archive is opened
*/
bool isOpened() const { return m_open; }
/**
* Returns the mode in which the archive was opened
* @return the mode in which the archive was opened (IO_ReadOnly or IO_WriteOnly)
* @see open()
*/
int mode() const { return m_mode; }
/**
* The underlying device.
* @return the underlying device.
*/
TQIODevice * device() const { return m_dev; }
/**
* If an archive is opened for reading, then the contents
* of the archive can be accessed via this function.
* @return the directory of the archive
*/
const KArchiveDirectory* directory() const;
/**
* Writes a local file into the archive. The main difference with writeFile,
* is that this method minimizes memory usage, by not loading the whole file
* into memory in one go.
*
* If @p fileName is a symbolic link, it will be written as is, i. e.
* it will not be resolved before.
* @param fileName full path to an existing local file, to be added to the archive.
* @param destName the resulting name (or relative path) of the file in the archive.
*/
bool addLocalFile( const TQString& fileName, const TQString& destName );
/**
* Writes a local directory into the archive, including all its contents, recursively.
* Calls addLocalFile for each file to be added.
*
* Since KDE 3.2 it will also add a @p path that is a symbolic link to a
* directory. The symbolic link will be dereferenced and the content of the
* directory it is pointing to added recursively. However, symbolic links
* *under* @p path will be stored as is.
* @param path full path to an existing local directory, to be added to the archive.
* @param destName the resulting name (or relative path) of the file in the archive.
*/
bool addLocalDirectory( const TQString& path, const TQString& destName );
/**
* If an archive is opened for writing then you can add new directories
* using this function. KArchive won't write one directory twice.
*
* @param name the name of the directory
* @param user the user that owns the directory
* @param group the group that owns the directory
*
* @todo TODO(BIC): make this a thin wrapper around
* writeDir(name,user,group,perm,atime,mtime,ctime)
* or eliminate it
*/
virtual bool writeDir( const TQString& name, const TQString& user, const TQString& group ) = 0;
/**
* If an archive is opened for writing then you can add new directories
* using this function. KArchive won't write one directory twice.
*
* This method also allows some file metadata to be
* set. However, depending on the archive type not all metadata might be
* regarded.
* @param name the name of the directory
* @param user the user that owns the directory
* @param group the group that owns the directory
* @param perm permissions of the directory
* @param atime time the file was last accessed
* @param mtime modification time of the file
* @param ctime creation time of the file
* @since 3.2
* @todo TODO(BIC): make this virtual. For now use virtual hook
*/
bool writeDir( const TQString& name, const TQString& user, const TQString& group,
mode_t perm, time_t atime, time_t mtime, time_t ctime );
/**
* Writes a symbolic link to the archive if the archive must be opened for
* writing.
* @param name name of symbolic link
* @param target target of symbolic link
* @param user the user that owns the directory
* @param group the group that owns the directory
* @param perm permissions of the directory
* @param atime time the file was last accessed
* @param mtime modification time of the file
* @param ctime creation time of the file
* @since 3.2
* @todo TODO(BIC) make virtual. For now it must be implemented by virtual_hook.
*/
bool writeSymLink(const TQString &name, const TQString &target,
const TQString &user, const TQString &group,
mode_t perm, time_t atime, time_t mtime, time_t ctime);
/**
* If an archive is opened for writing then you can add a new file
* using this function. If the file name is for example "mydir/test1" then
* the directory "mydir" is automatically appended first if that did not
* happen yet.
* @param name the name of the file
* @param user the user that owns the file
* @param group the group that owns the file
* @param size the size of the file
* @param data the data to write (@p size bytes)
* @todo TODO(BIC): make this a thin non-virtual wrapper around
* writeFile(name,user,group,size,perm,atime,mtime,ctime,data)
*/
virtual bool writeFile( const TQString& name, const TQString& user, const TQString& group, uint size, const char* data );
/**
* If an archive is opened for writing then you can add a new file
* using this function. If the file name is for example "mydir/test1" then
* the directory "mydir" is automatically appended first if that did not
* happen yet.
*
* This method also allows some file metadata to be
* set. However, depending on the archive type not all metadata might be
* regarded.
* @param name the name of the file
* @param user the user that owns the file
* @param group the group that owns the file
* @param size the size of the file
* @param perm permissions of the file
* @param atime time the file was last accessed
* @param mtime modification time of the file
* @param ctime creation time of the file
* @param data the data to write (@p size bytes)
* @since 3.2
* @todo TODO(BIC): make virtual. For now use virtual hook
*/
bool writeFile( const TQString& name, const TQString& user, const TQString& group,
uint size, mode_t perm, time_t atime, time_t mtime,
time_t ctime, const char* data );
/**
* Here's another way of writing a file into an archive:
* Call prepareWriting, then call writeData()
* as many times as wanted then call doneWriting( totalSize ).
* For tar.gz files, you need to know the size before hand, since it is needed in the header.
* For zip files, size isn't used.
*
* @param name the name of the file
* @param user the user that owns the file
* @param group the group that owns the file
* @param size the size of the file
*
* @todo TODO(BIC): make this a thin non-virtual wrapper around
* prepareWriting(name,user,group,size,perm,atime,mtime,ctime)
* or eliminate it.
*/
virtual bool prepareWriting( const TQString& name, const TQString& user, const TQString& group, uint size ) = 0;
/**
* Here's another way of writing a file into an archive:
* Call prepareWriting, then call writeData()
* as many times as wanted then call doneWriting( totalSize ).
* For tar.gz files, you need to know the size before hand, it is needed in the header!
* For zip files, size isn't used.
*
* This method also allows some file metadata to be
* set. However, depending on the archive type not all metadata might be
* regarded.
* @param name the name of the file
* @param user the user that owns the file
* @param group the group that owns the file
* @param size the size of the file
* @param perm permissions of the file
* @param atime time the file was last accessed
* @param mtime modification time of the file
* @param ctime creation time of the file
* @since 3.2
* @todo TODO(BIC): make this virtual. For now use virtual hook.
*/
bool prepareWriting( const TQString& name, const TQString& user,
const TQString& group, uint size, mode_t perm,
time_t atime, time_t mtime, time_t ctime );
/**
* Write data into the current file - to be called after calling prepareWriting
* @todo TODO(BIC) make virtual. For now virtual_hook allows reimplementing it.
*/
bool writeData( const char* data, uint size );
/**
* Call doneWriting after writing the data.
* @param size the size of the file
* @see prepareWriting()
*/
virtual bool doneWriting( uint size ) = 0;
protected:
/**
* Opens an archive for reading or writing.
* Called by open.
* @param mode may be IO_ReadOnly or IO_WriteOnly
*/
virtual bool openArchive( int mode ) = 0;
/**
* Closes the archive.
* Called by close.
*/
virtual bool closeArchive() = 0;
/**
* Retrieves or create the root directory.
* The default implementation assumes that openArchive() did the parsing,
* so it creates a dummy rootdir if none was set (write mode, or no '/' in the archive).
* Reimplement this to provide parsing/listing on demand.
* @return the root directory
*/
virtual KArchiveDirectory* rootDir();
/**
* Ensures that @p path exists, create otherwise.
* This handles e.g. tar files missing directory entries, like mico-2.3.0.tar.gz :)
* @param path the path of the directory
* @return the directory with the given @p path
*/
KArchiveDirectory * findOrCreate( const TQString & path );
/**
* @internal for inherited constructors
*/
void setDevice( TQIODevice *dev );
/**
* @internal for inherited classes
*/
void setRootDir( KArchiveDirectory *rootDir );
private:
TQIODevice * m_dev;
bool m_open;
char m_mode;
protected:
virtual void virtual_hook( int id, void* data );
/* @internal for virtual_hook */
enum { VIRTUAL_WRITE_DATA = 1, VIRTUAL_WRITE_SYMLINK, VIRTUAL_WRITE_DIR,
VIRTUAL_WRITE_FILE, VIRTUAL_PREPARE_WRITING };
bool prepareWriting_impl( const TQString& name, const TQString& user,
const TQString& group, uint size, mode_t perm,
time_t atime, time_t mtime, time_t ctime );
struct PrepareWritingParams {
const TQString *name;
const TQString *user;
const TQString *group;
uint size;
mode_t perm;
time_t atime, mtime, ctime;
bool retval;
};
bool writeFile_impl( const TQString& name, const TQString& user,
const TQString& group, uint size, mode_t perm,
time_t atime, time_t mtime, time_t ctime,
const char* data );
struct WriteFileParams {
const TQString *name;
const TQString *user;
const TQString *group;
uint size;
mode_t perm;
time_t atime, mtime, ctime;
const char *data;
bool retval;
};
bool writeDir_impl(const TQString& name, const TQString& user,
const TQString& group, mode_t perm,
time_t atime, time_t mtime, time_t ctime);
struct WriteDirParams {
const TQString *name;
const TQString *user;
const TQString *group;
mode_t perm;
time_t atime, mtime, ctime;
bool retval;
};
bool writeSymLink_impl(const TQString &name, const TQString &target,
const TQString &user, const TQString &group,
mode_t perm, time_t atime, time_t mtime, time_t ctime);
struct WriteSymlinkParams {
const TQString *name;
const TQString *target;
const TQString *user;
const TQString *group;
mode_t perm;
time_t atime, mtime, ctime;
bool retval;
};
bool writeData_impl( const char* data, uint size );
struct WriteDataParams {
const char* data;
uint size;
bool retval;
};
private:
class KArchivePrivate;
KArchivePrivate * d;
};
/**
* A base class for entries in an KArchive.
* @short Base class for the archive-file's directory structure.
*
* @see KArchiveFile
* @see KArchiveDirectory
*/
class TDEIO_EXPORT KArchiveEntry
{
public:
/**
* Creates a new entry.
* @param archive the entries archive
* @param name the name of the entry
* @param access the permissions in unix format
* @param date the date (in seconds since 1970)
* @param user the user that owns the entry
* @param group the group that owns the entry
* @param symlink the symlink, or TQString::null
*/
KArchiveEntry( KArchive* archive, const TQString& name, int access, int date,
const TQString& user, const TQString& group,
const TQString &symlink );
virtual ~KArchiveEntry() { }
/**
* Creation date of the file.
* @return the creation date
*/
TQDateTime datetime() const;
/**
* Creation date of the file.
* @return the creation date in seconds since 1970
*/
int date() const { return m_date; }
/**
* Name of the file without path.
* @return the file name without path
*/
TQString name() const { return m_name; }
/**
* The permissions and mode flags as returned by the stat() function
* in st_mode.
* @return the permissions
*/
mode_t permissions() const { return m_access; }
/**
* User who created the file.
* @return the owner of the file
*/
TQString user() const { return m_user; }
/**
* Group of the user who created the file.
* @return the group of the file
*/
TQString group() const { return m_group; }
/**
* Symlink if there is one.
* @return the symlink, or TQString::null
*/
TQString symlink() const { return m_symlink; }
/**
* Checks whether the entry is a file.
* @return true if this entry is a file
*/
virtual bool isFile() const { return false; }
/**
* Checks whether the entry is a directory.
* @return true if this entry is a directory
*/
virtual bool isDirectory() const { return false; }
protected:
KArchive* archive() const { return m_archive; }
private:
TQString m_name;
int m_date;
mode_t m_access;
TQString m_user;
TQString m_group;
TQString m_symlink;
KArchive* m_archive;
protected:
virtual void virtual_hook( int id, void* data );
private:
class KArchiveEntryPrivate* d;
};
/**
* Represents a file entry in a KArchive.
* @short A file in an archive.
*
* @see KArchive
* @see KArchiveDirectory
*/
class TDEIO_EXPORT KArchiveFile : public KArchiveEntry
{
public:
/**
* Creates a new file entry.
* @param archive the entries archive
* @param name the name of the entry
* @param access the permissions in unix format
* @param date the date (in seconds since 1970)
* @param user the user that owns the entry
* @param group the group that owns the entry
* @param symlink the symlink, or TQString::null
* @param pos the position of the file in the directory
* @param size the size of the file
*/
KArchiveFile( KArchive* archive, const TQString& name, int access, int date,
const TQString& user, const TQString& group, const TQString &symlink,
int pos, int size );
virtual ~KArchiveFile() { }
/**
* Position of the data in the [uncompressed] archive.
* @return the position of the file
*/
int position() const; // TODO use TQ_LONG in KDE-4.0
/**
* Size of the data.
* @return the size of the file
*/
int size() const; // TODO use TQ_LONG in KDE-4.0
/**
* Set size of data, usually after writing the file.
* @param s the new size of the file
*/
void setSize( int s ) { m_size = s; }
/**
* Returns the data of the file.
* Call data() with care (only once per file), this data isn't cached.
* @return the content of this file.
*/
virtual TQByteArray data() const;
/**
* This method returns TQIODevice (internal class: KLimitedIODevice)
* on top of the underlying TQIODevice. This is obviously for reading only.
* Note that the ownership of the device is being transferred to the caller,
* who will have to delete it.
* The returned device auto-opens (in readonly mode), no need to open it.
* @return the TQIODevice of the file
*/
TQIODevice *device() const; // TODO make virtual
/**
* Checks whether this entry is a file.
* @return true, since this entry is a file
*/
virtual bool isFile() const { return true; }
/**
* Extracts the file to the directory @p dest
* @param dest the directory to extract to
* @since 3.1
*/
void copyTo(const TQString& dest) const;
private:
int m_pos; // TODO use TQ_LONG in KDE-4.0
int m_size; // TODO use TQ_LONG in KDE-4.0
protected:
virtual void virtual_hook( int id, void* data );
private:
class KArchiveFilePrivate* d;
};
/**
* Represents a directory entry in a KArchive.
* @short A directory in an archive.
*
* @see KArchive
* @see KArchiveFile
*/
class TDEIO_EXPORT KArchiveDirectory : public KArchiveEntry
{
public:
/**
* Creates a new directory entry.
* @param archive the entries archive
* @param name the name of the entry
* @param access the permissions in unix format
* @param date the date (in seconds since 1970)
* @param user the user that owns the entry
* @param group the group that owns the entry
* @param symlink the symlink, or TQString::null
*/
KArchiveDirectory( KArchive* archive, const TQString& name, int access, int date,
const TQString& user, const TQString& group,
const TQString& symlink);
virtual ~KArchiveDirectory() { }
/**
* Returns a list of sub-entries.
* @return the names of all entries in this directory (filenames, no path).
*/
TQStringList entries() const;
/**
* Returns the entry with the given name.
* @param name may be "test1", "mydir/test3", "mydir/mysubdir/test3", etc.
* @return a pointer to the entry in the directory.
*/
KArchiveEntry* entry( TQString name );
/**
* Returns the entry with the given name.
* @param name may be "test1", "mydir/test3", "mydir/mysubdir/test3", etc.
* @return a pointer to the entry in the directory.
*/
const KArchiveEntry* entry( TQString name ) const;
/**
* @internal
* Adds a new entry to the directory.
*/
void addEntry( KArchiveEntry* );
/**
* Checks whether this entry is a directory.
* @return true, since this entry is a directory
*/
virtual bool isDirectory() const { return true; }
/**
* Extracts all entries in this archive directory to the directory
* @p dest.
* @param dest the directory to extract to
* @param recursive if set to true, subdirectories are extracted as well
* @since 3.1
*/
void copyTo(const TQString& dest, bool recursive = true) const;
private:
TQDict<KArchiveEntry> m_entries;
protected:
virtual void virtual_hook( int id, void* data );
private:
class KArchiveDirectoryPrivate* d;
};
#endif