aaru-dps/Aaru.Server
1
0
Fork 0
mirror of https://github.com/aaru-dps/Aaru.Server.git synced 2025-12-16 19:24:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add writing support to Ray Arachelian's disk image.

Browse Source
This commit is contained in:
Natalia Portillo
2017-12-31 23:34:02 +00:00
parent a0c38555ea
commit 2d4a9eda85
1 changed files with 188 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

189
DiscImageChef.DiscImages/RayDIM.cs
View File

@@ -34,7 +34,9 @@ using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Text.RegularExpressions;
using DiscImageChef.CommonTypes;
using DiscImageChef.Console;
@@ -42,7 +44,7 @@ using DiscImageChef.Filters;
namespace DiscImageChef.DiscImages
{
public class RayDim : IMediaImage
public class RayDim : IWritableImage
{
const string REGEX_SIGNATURE =
@"Disk IMage VER (?<major>\d).(?<minor>\d) Copyright \(C\) (?<year>\d{4}) Ray Arachelian, All Rights Reserved\.";
@@ -330,5 +332,190 @@ namespace DiscImageChef.DiscImages
Mf2hd = 4,
Mf2ed = 5
}
public IEnumerable<MediaTagType> SupportedMediaTags => new MediaTagType[] { };
public IEnumerable<SectorTagType> SupportedSectorTags => new SectorTagType[] { };
// TODO: Test with real hardware to see real supported media
public IEnumerable<MediaType> SupportedMediaTypes =>
new[]
{
MediaType.Apricot_35, MediaType.ATARI_35_DS_DD,
MediaType.ATARI_35_DS_DD_11, MediaType.ATARI_35_SS_DD, MediaType.ATARI_35_SS_DD_11, MediaType.DMF,
MediaType.DMF_82, MediaType.DOS_35_DS_DD_8, MediaType.DOS_35_DS_DD_9, MediaType.DOS_35_ED,
MediaType.DOS_35_HD, MediaType.DOS_35_SS_DD_8, MediaType.DOS_35_SS_DD_9, MediaType.DOS_525_DS_DD_8,
MediaType.DOS_525_DS_DD_9, MediaType.DOS_525_HD, MediaType.DOS_525_SS_DD_8, MediaType.DOS_525_SS_DD_9,
MediaType.FDFORMAT_35_DD, MediaType.FDFORMAT_35_HD, MediaType.FDFORMAT_525_DD,
MediaType.FDFORMAT_525_HD, MediaType.RX50, MediaType.XDF_35, MediaType.XDF_525
};
public IEnumerable<(string name, Type type, string description)> SupportedOptions =>
new(string name, Type type, string description)[] { };
public IEnumerable<string> KnownExtensions => new[] {".dim"};
public bool IsWriting { get; private set; }
public string ErrorMessage { get; private set; }
FileStream writingStream;
public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors, uint sectorSize)
{
if(sectorSize == 512)
{
ErrorMessage = "Unsupported sector size";
return false;
}
if(sectors > (255 * 255 * 255))
{
ErrorMessage = $"Too many sectors";
return false;
}
if(!SupportedMediaTypes.Contains(mediaType))
{
ErrorMessage = $"Unsupport media format {mediaType}";
return false;
}
(ushort cylinders, byte heads, ushort sectorsPerTrack, uint bytesPerSector, MediaEncoding encoding, bool
variableSectorsPerTrack, MediaType type) geometry = Geometry.GetGeometry(mediaType);
imageInfo = new ImageInfo
{
MediaType = mediaType,
SectorSize = sectorSize,
Sectors = sectors,
Cylinders = geometry.cylinders,
Heads = geometry.heads,
SectorsPerTrack = geometry.sectorsPerTrack
};
try { writingStream = new FileStream(path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None); }
catch(IOException e)
{
ErrorMessage = $"Could not create new image file, exception {e.Message}";
return false;
}
IsWriting = true;
ErrorMessage = null;
return true;
}
public bool WriteMediaTag(byte[] data, MediaTagType tag)
{
ErrorMessage = "Writing media tags is not supported.";
return false;
}
public bool WriteSector(byte[] data, ulong sectorAddress)
{
if(!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return false;
}
if(data.Length != 512)
{
ErrorMessage = "Incorrect data size";
return false;
}
if(sectorAddress >= imageInfo.Sectors)
{
ErrorMessage = "Tried to write past image size";
return false;
}
writingStream.Seek((long)((ulong)Marshal.SizeOf(typeof(RayHdr)) + sectorAddress * imageInfo.SectorSize), SeekOrigin.Begin);
writingStream.Write(data, 0, data.Length);
ErrorMessage = "";
return true;
}
public bool WriteSectors(byte[] data, ulong sectorAddress, uint length)
{
if(!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return false;
}
if(data.Length % 512 != 0)
{
ErrorMessage = "Incorrect data size";
return false;
}
if(sectorAddress + length > imageInfo.Sectors)
{
ErrorMessage = "Tried to write past image size";
return false;
}
writingStream.Seek((long)((ulong)Marshal.SizeOf(typeof(RayHdr)) + sectorAddress * imageInfo.SectorSize), SeekOrigin.Begin);
writingStream.Write(data, 0, data.Length);
ErrorMessage = "";
return true;
}
public bool WriteSectorLong(byte[] data, ulong sectorAddress)
{
ErrorMessage = "Writing sectors with tags is not supported.";
return false;
}
public bool WriteSectorsLong(byte[] data, ulong sectorAddress, uint length)
{
ErrorMessage = "Writing sectors with tags is not supported.";
return false;
}
public bool SetTracks(List<Track> tracks)
{
ErrorMessage = "Unsupported feature";
return false;
}
public bool Close()
{
if(!IsWriting)
{
ErrorMessage = "Image is not opened for writing";
return false;
}
string headerSignature =
$"Disk IMage VER 1.0 Copyright (C) ({DateTime.Now.Year:D4}) Ray Arachelian, All Rights Reserved. DIC ";
RayHdr header = new RayHdr
{
signature = Encoding.ASCII.GetBytes(headerSignature),
cylinders = (byte)imageInfo.Cylinders,
diskType = RayDiskTypes.Mf2ed,
heads = (byte)imageInfo.Heads,
sectorsPerTrack = (byte)imageInfo.SectorsPerTrack
};
header.signature[0x4A] = 0x00;
byte[] hdr = new byte[Marshal.SizeOf(header)];
IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(header));
Marshal.StructureToPtr(header, hdrPtr, true);
Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
Marshal.FreeHGlobal(hdrPtr);
writingStream.Seek(0, SeekOrigin.Begin);
writingStream.Write(hdr, 0, hdr.Length);
writingStream.Flush();
writingStream.Close();
IsWriting = false;
return true;
}
public bool SetMetadata(ImageInfo metadata)
{
imageInfo.Comments = metadata.Comments;
return true;
}
}
}