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307 lines
11 KiB
C#
307 lines
11 KiB
C#
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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 Apridisk 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 Apridisk
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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(!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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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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(ushort cylinder, byte head, byte sector) = LbaToChs(sectorAddress);
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if(cylinder >= sectorsData.Length)
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{
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ErrorMessage = "Sector address not found";
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return false;
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}
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if(head >= sectorsData[cylinder].Length)
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{
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ErrorMessage = "Sector address not found";
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return false;
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}
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if(sector > sectorsData[cylinder][head].Length)
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{
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ErrorMessage = "Sector address not found";
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return false;
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}
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sectorsData[cylinder][head][sector] = data;
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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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for(uint i = 0; i < length; i++)
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{
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(ushort cylinder, byte head, byte sector) = LbaToChs(sectorAddress);
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if(cylinder >= sectorsData.Length)
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{
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ErrorMessage = "Sector address not found";
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return false;
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}
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if(head >= sectorsData[cylinder].Length)
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{
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ErrorMessage = "Sector address not found";
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return false;
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}
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if(sector > sectorsData[cylinder][head].Length)
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{
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ErrorMessage = "Sector address not found";
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return false;
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}
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sectorsData[cylinder][head][sector] = data;
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}
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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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// TODO: Try if apridisk software supports finding other chunks, to extend metadata support
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public bool Close()
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{
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writingStream.Seek(0, SeekOrigin.Begin);
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writingStream.Write(signature, 0, signature.Length);
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byte[] hdr = new byte[Marshal.SizeOf(typeof(ApridiskRecord))];
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IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ApridiskRecord)));
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for(ushort c = 0; c < imageInfo.Cylinders; c++)
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{
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for(byte h = 0; h < imageInfo.Heads; h++)
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{
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for(byte s = 0; s < imageInfo.SectorsPerTrack; s++)
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{
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if(sectorsData[c][h][s] == null || sectorsData[c][h][s].Length == 0) continue;
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ApridiskRecord record = new ApridiskRecord
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{
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type = RecordType.Sector,
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compression = CompressType.Uncompresed,
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headerSize = (ushort)Marshal.SizeOf(typeof(ApridiskRecord)),
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dataSize = (uint)sectorsData[c][h][s].Length,
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head = h,
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sector = s,
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cylinder = c
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};
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Marshal.StructureToPtr(record, hdrPtr, true);
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Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
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writingStream.Write(hdr, 0, hdr.Length);
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writingStream.Write(sectorsData[c][h][s], 0, sectorsData[c][h][s].Length);
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}
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}
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}
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if(!string.IsNullOrEmpty(imageInfo.Creator))
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{
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byte[] creatorBytes = Encoding.UTF8.GetBytes(imageInfo.Creator);
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ApridiskRecord creatorRecord = new ApridiskRecord
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{
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type = RecordType.Creator,
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compression = CompressType.Uncompresed,
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headerSize = (ushort)Marshal.SizeOf(typeof(ApridiskRecord)),
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dataSize = (uint)creatorBytes.Length + 1,
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head = 0,
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sector = 0,
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cylinder = 0
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};
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Marshal.StructureToPtr(creatorRecord, hdrPtr, true);
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Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
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writingStream.Write(hdr, 0, hdr.Length);
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writingStream.Write(creatorBytes, 0, creatorBytes.Length);
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writingStream.WriteByte(0); // Termination
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}
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if(!string.IsNullOrEmpty(imageInfo.Comments))
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{
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byte[] commentBytes = Encoding.UTF8.GetBytes(imageInfo.Comments);
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ApridiskRecord commentRecord = new ApridiskRecord
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{
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type = RecordType.Comment,
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compression = CompressType.Uncompresed,
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headerSize = (ushort)Marshal.SizeOf(typeof(ApridiskRecord)),
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dataSize = (uint)commentBytes.Length + 1,
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head = 0,
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sector = 0,
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cylinder = 0
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};
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Marshal.StructureToPtr(commentRecord, hdrPtr, true);
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Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
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writingStream.Write(hdr, 0, hdr.Length);
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writingStream.Write(commentBytes, 0, commentBytes.Length);
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writingStream.WriteByte(0); // Termination
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}
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Marshal.FreeHGlobal(hdrPtr);
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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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imageInfo.Comments = metadata.Comments;
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imageInfo.Creator = metadata.Creator;
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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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if(cylinders > ushort.MaxValue)
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{
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ErrorMessage = "Too many cylinders";
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return false;
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}
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if(heads > byte.MaxValue)
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{
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ErrorMessage = "Too many heads";
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return false;
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}
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if(sectorsPerTrack > byte.MaxValue)
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{
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ErrorMessage = "Too many sectors per track";
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return false;
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}
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sectorsData = new byte[cylinders][][][];
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for(ushort c = 0; c < cylinders; c++)
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{
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sectorsData[c] = new byte[heads][][];
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for(byte h = 0; h < heads; h++) sectorsData[c][h] = new byte[sectorsPerTrack][];
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}
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imageInfo.Cylinders = cylinders;
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imageInfo.Heads = heads;
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imageInfo.SectorsPerTrack = sectorsPerTrack;
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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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