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Refactor image classes and split them to smaller files.
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245
DiscImageChef.DiscImages/DriDiskCopy/Write.cs
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245
DiscImageChef.DiscImages/DriDiskCopy/Write.cs
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// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : Write.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Writes Digital Research's DISKCOPY disk images.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.CommonTypes.Structs;
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using Schemas;
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namespace DiscImageChef.DiscImages
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{
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public partial class DriDiskCopy
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{
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public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
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uint sectorSize)
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{
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if(sectorSize == 0)
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{
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ErrorMessage = "Unsupported sector size";
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return false;
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}
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if(sectors > ushort.MaxValue)
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{
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ErrorMessage = "Too many sectors";
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return false;
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}
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if(!SupportedMediaTypes.Contains(mediaType))
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{
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ErrorMessage = $"Unsupport media format {mediaType}";
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return false;
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}
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imageInfo = new ImageInfo {MediaType = mediaType, SectorSize = sectorSize, Sectors = sectors};
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try { writingStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None); }
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catch(IOException e)
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{
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ErrorMessage = $"Could not create new image file, exception {e.Message}";
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return false;
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}
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// TODO: Check this
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(ushort cylinders, byte heads, ushort sectorsPerTrack, uint bytesPerSector, MediaEncoding encoding, bool
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variableSectorsPerTrack, MediaType type) geometry = Geometry.GetGeometry(mediaType);
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footer = new DriFooter
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{
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signature = new byte[51],
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bpb = new DriBpb
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{
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five = 5,
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driveCode = DriDriveCodes.mf2ed,
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cylinders = geometry.cylinders,
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bps = (ushort)imageInfo.SectorSize,
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sectors = (ushort)imageInfo.Sectors,
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sptrack = (ushort)imageInfo.SectorsPerTrack,
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heads = (ushort)imageInfo.Heads,
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sptrack2 = (ushort)imageInfo.SectorsPerTrack,
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unknown5 = new byte[144]
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}
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};
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Array.Copy(Encoding.ASCII.GetBytes("DiskImage 2.01 (C) 1990,1991 Digital Research Inc"), 0,
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footer.signature, 0, 49);
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footer.bpbcopy = footer.bpb;
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IsWriting = true;
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ErrorMessage = null;
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return true;
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}
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public bool WriteMediaTag(byte[] data, MediaTagType tag)
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{
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ErrorMessage = "Writing media tags is not supported.";
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return false;
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}
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public bool WriteSector(byte[] data, ulong sectorAddress)
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{
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if(!IsWriting)
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{
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ErrorMessage = "Tried to write on a non-writable image";
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return false;
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}
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if(data.Length != imageInfo.SectorSize)
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{
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ErrorMessage = "Incorrect data size";
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return false;
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}
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if(sectorAddress >= imageInfo.Sectors)
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{
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ErrorMessage = "Tried to write past image size";
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return false;
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}
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writingStream.Seek((long)(sectorAddress * imageInfo.SectorSize), SeekOrigin.Begin);
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writingStream.Write(data, 0, data.Length);
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ErrorMessage = "";
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return true;
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}
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public bool WriteSectors(byte[] data, ulong sectorAddress, uint length)
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{
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if(!IsWriting)
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{
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ErrorMessage = "Tried to write on a non-writable image";
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return false;
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}
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if(data.Length % imageInfo.SectorSize != 0)
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{
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ErrorMessage = "Incorrect data size";
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return false;
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}
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if(sectorAddress + length > imageInfo.Sectors)
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{
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ErrorMessage = "Tried to write past image size";
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return false;
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}
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writingStream.Seek((long)(sectorAddress * imageInfo.SectorSize), SeekOrigin.Begin);
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writingStream.Write(data, 0, data.Length);
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ErrorMessage = "";
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return true;
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}
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public bool WriteSectorLong(byte[] data, ulong sectorAddress)
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{
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ErrorMessage = "Writing sectors with tags is not supported.";
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return false;
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}
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public bool WriteSectorsLong(byte[] data, ulong sectorAddress, uint length)
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{
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ErrorMessage = "Writing sectors with tags is not supported.";
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return false;
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}
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public bool SetTracks(List<Track> tracks)
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{
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ErrorMessage = "Unsupported feature";
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return false;
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}
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public bool Close()
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{
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if(!IsWriting)
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{
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ErrorMessage = "Image is not opened for writing";
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return false;
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}
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byte[] hdr = new byte[Marshal.SizeOf(footer)];
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IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(footer));
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Marshal.StructureToPtr(footer, hdrPtr, true);
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Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
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Marshal.FreeHGlobal(hdrPtr);
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writingStream.Seek(0, SeekOrigin.End);
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writingStream.Write(hdr, 0, hdr.Length);
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writingStream.Flush();
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writingStream.Close();
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IsWriting = false;
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ErrorMessage = "";
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return true;
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}
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public bool SetMetadata(ImageInfo metadata)
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{
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return true;
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}
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public bool SetGeometry(uint cylinders, uint heads, uint sectorsPerTrack)
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{
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// Geometry is set by media type
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return true;
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}
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public bool WriteSectorTag(byte[] data, ulong sectorAddress, SectorTagType tag)
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{
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ErrorMessage = "Unsupported feature";
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return false;
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}
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public bool WriteSectorsTag(byte[] data, ulong sectorAddress, uint length, SectorTagType tag)
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{
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ErrorMessage = "Unsupported feature";
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return false;
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}
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public bool SetDumpHardware(List<DumpHardwareType> dumpHardware)
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{
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// Not supported
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return false;
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}
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public bool SetCicmMetadata(CICMMetadataType metadata)
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{
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// Not supported
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return false;
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}
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}
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}
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