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Refactor image classes and split them to smaller files.
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263
DiscImageChef.DiscImages/CisCopy/Write.cs
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263
DiscImageChef.DiscImages/CisCopy/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 CisCopy 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.Collections.Generic;
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using System.IO;
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using System.Linq;
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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 CisCopy
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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 != 512)
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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(!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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DiskType diskType;
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switch(mediaType)
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{
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case MediaType.DOS_35_DS_DD_9:
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diskType = DiskType.MF2DD;
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break;
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case MediaType.DOS_35_HD:
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diskType = DiskType.MF2HD;
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break;
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case MediaType.DOS_525_DS_DD_8:
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diskType = DiskType.MD2DD8;
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break;
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case MediaType.DOS_525_DS_DD_9:
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diskType = DiskType.MD2DD;
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break;
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case MediaType.DOS_525_HD:
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diskType = DiskType.MD2HD;
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break;
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case MediaType.DOS_525_SS_DD_8:
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diskType = DiskType.MD1DD8;
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break;
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case MediaType.DOS_525_SS_DD_9:
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diskType = DiskType.MD1DD;
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break;
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default:
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ErrorMessage = $"Unsupport media format {mediaType}";
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return false;
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}
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writingStream.WriteByte((byte)diskType);
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byte tracks = 0;
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switch(diskType)
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{
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case DiskType.MD1DD8:
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case DiskType.MD1DD:
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case DiskType.MD2DD8:
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case DiskType.MD2DD:
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tracks = 80;
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break;
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case DiskType.MF2DD:
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case DiskType.MD2HD:
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case DiskType.MF2HD:
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tracks = 160;
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break;
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}
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int headstep = 1;
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if(diskType == DiskType.MD1DD || diskType == DiskType.MD1DD8) headstep = 2;
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for(int i = 0; i < tracks; i += headstep)
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{
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writingStream.WriteByte((byte)TrackType.Copied);
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if(headstep == 2) writingStream.WriteByte(0);
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}
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writingStream.WriteByte((byte)Compression.None);
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writingOffset = writingStream.Position;
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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 != 512)
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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(writingOffset + (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 % 512 != 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(writingOffset + (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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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 not stored in image
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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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