lib Library API Documentation

koStoreDevice.h

00001 /* This file is part of the KDE project 00002 Copyright (C) 2000 David Faure <faure@kde.org> 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public License 00015 along with this library; see the file COPYING.LIB. If not, write to 00016 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00017 Boston, MA 02111-1307, USA. 00018 */ 00019 00020 #ifndef koStoreDevice_h 00021 #define koStoreDevice_h 00022 00023 #include <koStore.h> 00024 00025 // ### TODO: KOffice 1.4: allow writeBlock(const QByteArray&) and readLine 00026 // ### TODO: writeBlock is shadowed by the other writeBlock 00027 // ### TODO: readLine is disabled for no good reason (QIODevice can do it alone.) 00028 00034 class KoStoreDevice : public QIODevice 00035 { 00036 public: 00037 // Note: KoStore::open() should be called before calling this. 00038 KoStoreDevice( KoStore * store ) : m_store(store) { 00039 setType( IO_Direct ); 00040 } 00041 ~KoStoreDevice() {} 00042 00043 bool open( int m ) { 00044 if ( m & IO_ReadOnly ) 00045 return ( m_store->mode() == KoStore::Read ); 00046 if ( m & IO_WriteOnly ) 00047 return ( m_store->mode() == KoStore::Write ); 00048 return false; 00049 } 00050 void close() { } 00051 void flush() { } 00052 00053 Offset size() const { 00054 if ( m_store->mode() == KoStore::Read ) 00055 return m_store->size(); 00056 else 00057 return 0xffffffff; 00058 } 00059 00060 Q_LONG readBlock( char *data, Q_ULONG maxlen ) { return m_store->read(data, maxlen); } 00061 Q_LONG writeBlock( const char *data, Q_ULONG len ) { return m_store->write( data, len ); } 00062 Q_LONG readLine( char *, Q_ULONG ) { return -1; } // unsupported 00063 00064 int getch() { 00065 char c[2]; 00066 if ( m_store->read(c, 1) == -1) 00067 return -1; 00068 else 00069 return c[0]; 00070 } 00071 int putch( int _c ) { 00072 char c[2]; 00073 c[0] = _c; 00074 c[1] = 0; 00075 if (m_store->write( c, 1 ) == 1) 00076 return _c; 00077 else 00078 return -1; 00079 } 00080 int ungetch( int ) { return -1; } // unsupported 00081 00082 // See QIODevice 00083 virtual bool at( Offset pos ) { return m_store->at(pos); } 00084 virtual Offset at() const { return m_store->at(); } 00085 virtual bool atEnd() const { return m_store->atEnd(); } 00086 00087 protected: 00088 KoStore * m_store; 00089 }; 00090 00091 #endif
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This file is part of the documentation for lib Library Version 1.3.3.
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