file.cpp

00001 /*
00002  * libopenraw - file.h
00003  *
00004  * Copyright (C) 2006 Hubert Figuière
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with this library; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  */
00020 
00021 
00022 #include <libopenraw/libopenraw.h>
00023 #include "file.h"
00024 
00025 
00026 namespace OpenRaw {
00027     namespace IO {
00028     
00029         File::File(const char *filename)
00030             : OpenRaw::IO::Stream(filename),
00031                 m_methods(::get_default_io_methods()),
00032                 m_ioRef(NULL)
00033         {
00034         }
00035 
00036         File::~File()
00037         {
00038         }
00039     
00040         File::Error File::open()
00041         {
00042             m_ioRef = ::raw_open(m_methods, get_path().c_str(), O_RDONLY);
00043             if (m_ioRef == NULL) {
00044                 return OR_ERROR_CANT_OPEN;
00045             }
00046             return OR_ERROR_NONE;
00047         }
00048 
00049         int File::close()
00050         {
00051             return ::raw_close(m_ioRef);
00052         }
00053 
00054         int File::seek(off_t offset, int whence)
00055         {
00056             return ::raw_seek(m_ioRef, offset, whence);
00057         }
00058 
00059         int File::read(void *buf, size_t count)
00060         {
00061             return ::raw_read(m_ioRef, buf, count);
00062         }
00063 
00064         off_t File::filesize()
00065         {
00066             return ::raw_filesize(m_ioRef);
00067         }
00068 
00069     }
00070 }

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