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+/* 
+ *
+ * $Id: k3biso9660.h 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2003 Sebastian Trueg <[email protected]>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+
+#ifndef _K3B_ISO9660_H_
+#define _K3B_ISO9660_H_
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <qdatetime.h>
+#include <qstring.h>
+#include <qstringlist.h>
+#include <qdict.h>
+
+#include "k3b_export.h"
+
+
+namespace K3bDevice {
+  class Device;
+}
+
+class K3bIso9660;
+class K3bIso9660Backend;
+struct iso_directory_record;
+struct el_torito_boot_descriptor;
+struct iso_primary_descriptor;
+
+typedef long sector_t;
+
+
+
+/**
+ * Simplyfied primary descriptor which just contains the fields
+ * used by K3b.
+ */
+class LIBK3B_EXPORT K3bIso9660SimplePrimaryDescriptor
+{
+ public:
+  /**
+   * Creates an empty descriptor
+   */
+  K3bIso9660SimplePrimaryDescriptor();
+
+  QString volumeId;
+  QString systemId;
+  QString volumeSetId;
+  QString publisherId;
+  QString preparerId;
+  QString applicationId;
+  int volumeSetSize;
+  int volumeSetNumber;
+  long logicalBlockSize;
+  long long volumeSpaceSize;
+};
+
+
+LIBK3B_EXPORT bool operator==( const K3bIso9660SimplePrimaryDescriptor& d1,
+			       const K3bIso9660SimplePrimaryDescriptor& d2 );
+LIBK3B_EXPORT bool operator!=( const K3bIso9660SimplePrimaryDescriptor& d1,
+			       const K3bIso9660SimplePrimaryDescriptor& d2 );
+
+
+/**
+ * Base class for all entries in a K3bIso9660 archive. A lot has been copied
+ * from KArchive.
+ */
+class LIBK3B_EXPORT K3bIso9660Entry
+{
+ public:
+  K3bIso9660Entry( K3bIso9660* archive,
+		   const QString& isoName,
+		   const QString& name,
+		   int access,
+		   int date,
+		   int adate,
+		   int cdate, 
+		   const QString& user,
+		   const QString& group,
+		   const QString& symlink );
+  virtual ~K3bIso9660Entry();
+
+  int adate() const { return m_adate; }
+  int cdate() const { return m_cdate; }
+
+  /**
+   * Creation date of the file.
+   * @return the creation date
+   */
+  QDateTime 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.
+   */
+  const QString& name() const { return m_name; }
+
+  /**
+   * \return The raw name as saved in the ISO9660 tree
+   */
+  const QString& isoName() const { return m_isoName; }
+
+  /**
+   * 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
+   */
+  const QString& user() const { return m_user; }
+
+  /**
+   * Group of the user who created the file.
+   * @return the group of the file
+   */
+  const QString& group() const { return m_group; }
+
+  /**
+   * Symlink if there is one.
+   * @return the symlink, or QString::null
+   */
+  const QString& 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; }
+
+  K3bIso9660* archive() const { return m_archive; }
+
+ private:
+  int m_adate;
+  int m_cdate;
+  QString m_name;
+  QString m_isoName;
+  int m_date;
+  mode_t m_access;
+  QString m_user;
+  QString m_group;
+  QString m_symlink;
+  K3bIso9660* m_archive;
+};
+
+
+class LIBK3B_EXPORT K3bIso9660Directory : public K3bIso9660Entry
+{
+ public: 
+  K3bIso9660Directory( K3bIso9660* archive, 
+		       const QString& isoName,
+		       const QString& name, 
+		       int access, 
+		       int date,
+		       int adate,
+		       int cdate, 
+		       const QString& user,
+		       const QString& group,
+		       const QString& symlink,
+		       unsigned int pos = 0, 
+		       unsigned int size = 0 );
+  ~K3bIso9660Directory();
+
+  /**
+   * Returns a list of sub-entries.
+   * @return the names of all entries in this directory (filenames, no path).
+   */
+  QStringList 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.
+   */
+  K3bIso9660Entry* entry( const QString& 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 K3bIso9660Entry* entry( const QString& name ) const;
+
+  /**
+   * Returns a list of sub-entries.
+   * Searches for Iso9660 names.
+   * @return the names of all entries in this directory (filenames, no path).
+   */
+  QStringList iso9660Entries() const;
+
+  /**
+   * Returns the entry with the given name.
+   * Searches for Iso9660 names.
+   * @param name may be "test1", "mydir/test3", "mydir/mysubdir/test3", etc.
+   * @return a pointer to the entry in the directory.
+   */
+  K3bIso9660Entry* iso9660Entry( const QString& name );
+
+  /**
+   * Returns the entry with the given name.
+   * Searches for Iso9660 names.
+   * @param name may be "test1", "mydir/test3", "mydir/mysubdir/test3", etc.
+   * @return a pointer to the entry in the directory.
+   */
+  const K3bIso9660Entry* iso9660Entry( const QString& name ) const;
+
+  /**
+   * @internal
+   * Adds a new entry to the directory.
+   */
+  void addEntry( K3bIso9660Entry* );
+
+  /**
+   * Checks whether this entry is a directory.
+   * @return true, since this entry is a directory
+   */
+  bool isDirectory() const { return true; }
+
+ private:
+  void expand();
+
+  QDict<K3bIso9660Entry> m_entries;
+  QDict<K3bIso9660Entry> m_iso9660Entries;
+
+  bool m_bExpanded;
+  unsigned int m_startSector;
+  unsigned int m_size;
+};
+
+
+class LIBK3B_EXPORT K3bIso9660File : public K3bIso9660Entry
+{
+ public: 
+  /**
+   * @param pos start sector
+   */
+  K3bIso9660File( K3bIso9660* archive, 
+		  const QString& isoName,
+		  const QString& name, 
+		  int access, 
+		  int date,
+		  int adate,
+		  int cdate, 
+		  const QString& user, 
+		  const QString& group,
+		  const QString& symlink, 
+		  unsigned int pos, 
+		  unsigned int size );
+  ~K3bIso9660File();
+
+  bool isFile() const { return true; }
+
+  void setZF( char algo[2], char parms[2], int realsize );
+  int realsize() const { return m_realsize; }
+
+  /**
+   * @return size in bytes.
+   */
+  unsigned int size() const { return m_size; }
+
+  /**
+   * Returnes the startSector of the file.
+   */
+  unsigned int startSector() const { return m_startSector; }
+
+  /**
+   * Returnes the startOffset of the file in bytes.
+   */
+  unsigned long long startPostion() const { return (unsigned long long)m_startSector * 2048; }
+
+  /**
+   * @param pos offset in bytes
+   * @param len max number of bytes to read
+   */
+  int read( unsigned int pos, char* data, int len ) const;
+
+  /**
+   * Copy this file to a url.
+   */
+  bool copyTo( const QString& url ) const;
+
+ private:
+  char m_algo[2];
+  char m_parms[2];
+  int m_realsize;
+
+  unsigned int m_curpos;
+  unsigned int m_startSector;
+  unsigned int m_size;
+};
+
+
+/**
+ * This class is based on the KIso class by
+ * Gy�gy Szombathelyi <[email protected]>.
+ * A lot has been changed and bugfixed.
+ * The API has been improved to be useful.
+ *
+ * Due to the stupid Qt which does not support large files as default
+ * we cannot use QIODevice with DVDs! That's why we have our own 
+ * reading code which is not allowed by KArchive (which is limited to int
+ * by the way... who the hell designed this?)
+ * I also removed the KArchive inheritance because of the named reasons.
+ * So this stuff contains a lot KArchive code which has been made usable.
+ *
+ * That does not mean that this class is well designed. No, it's not. :)
+ *
+ * Opening a K3bIso9660 object should be fast since creation of the directory 
+ * and file entries is not done until a call to K3bIso9660Directory::entries.
+*/
+class LIBK3B_EXPORT K3bIso9660
+{
+ public:
+  /**
+   * Creates an instance that operates on the given filename.
+   * using the compression filter associated to given mimetype.
+   *
+   * @param filename is a local path (e.g. "/home/weis/myfile.tgz")
+   */
+  K3bIso9660( const QString& filename );
+
+  /**
+   * Special case which always reads the TOC from the specified sector
+   * thus supporting multisession CDs.
+   */
+  K3bIso9660( K3bDevice::Device* dev, unsigned int startSector = 0 );
+
+  /**
+   * @param fd open file descriptor
+   */
+  K3bIso9660( int fd );
+
+  /**
+   * Directly specify the backend to read from.
+   * K3bIso9660 will take ownership of the backend and delete it.
+   */
+  K3bIso9660( K3bIso9660Backend* );
+
+  /**
+   * If the .iso is still opened, then it will be
+   * closed automatically by the destructor.
+   */
+  virtual ~K3bIso9660();
+
+  /**
+   * Set where to start reading in the source.
+   */
+  void setStartSector( unsigned int startSector );
+
+  /**
+   * If set to true before opening K3bIso9660 will ignore RR and joliet extensions
+   * and only create plain iso9660 names.
+   */
+  void setPlainIso9660( bool );
+
+  bool plainIso9660() const;
+
+  /**
+   * Opens the archive for reading.
+   * Parses the directory listing of the archive
+   * and creates the K3bIso9660Directory/K3bIso9660File entries.
+   */
+  bool open();
+
+  bool isOpen() const;
+
+  /**
+   * Closes everything.
+   * This is also called in the destructor
+   */
+  void close();
+
+  /**
+   * @param sector startsector
+   * @param len number of sectors
+   * @return number of sectors read or -1 on error
+   */
+  int read( unsigned int sector, char* data, int len );
+
+  /**
+   * The name of the os file, as passed to the constructor
+   * Null if you did not use the QString constructor.
+   */
+  const QString& fileName() { return m_filename; }
+
+  const K3bIso9660Directory* firstJolietDirEntry() const;
+  const K3bIso9660Directory* firstRRDirEntry() const;
+  const K3bIso9660Directory* firstIsoDirEntry() const;
+  const K3bIso9660Directory* firstElToritoEntry() const;
+
+  /**
+   * @returns 0 if no joliet desc could be found
+   *          the joliet level (1-3) otherwise
+   */
+  int jolietLevel() const { return m_joliet; }
+
+  const K3bIso9660SimplePrimaryDescriptor& primaryDescriptor() const;
+
+  void debug() const;
+
+ private:
+  /**
+   * @internal
+   */
+  void addBoot( struct el_torito_boot_descriptor* bootdesc );
+  void createSimplePrimaryDesc( struct iso_primary_descriptor* desc );
+
+  void debugEntry( const K3bIso9660Entry*, int depth ) const;
+
+  int m_joliet;
+
+  // only used for creation
+  static int read_callback( char* buf, sector_t start, int len, void* udata );
+  static int isofs_callback( struct iso_directory_record* idr, void *udata );
+  K3bIso9660Directory *dirent;
+  bool m_rr;
+  friend class K3bIso9660Directory;
+  
+ private:
+  QString m_filename;
+
+  class Private;
+  Private * d;
+};
+
+#endif