mirror of
https://github.com/aaru-dps/Aaru.git
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321 lines
9.6 KiB
C#
321 lines
9.6 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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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 XGS emulator 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 © 2011-2025 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 System.Text;
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using Aaru.CommonTypes;
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using Aaru.CommonTypes.AaruMetadata;
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using Aaru.CommonTypes.Enums;
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using Aaru.CommonTypes.Structs;
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using Aaru.Helpers;
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using Aaru.Logging;
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namespace Aaru.Images;
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public sealed partial class Apple2Mg
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{
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#region IWritableImage Members
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/// <inheritdoc />
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public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
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uint negativeSectors, uint overflowSectors, uint sectorSize)
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{
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if(sectorSize != 512)
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{
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if(sectorSize != 256 || mediaType != MediaType.Apple32SS && mediaType != MediaType.Apple33SS)
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{
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ErrorMessage = Localization.Unsupported_sector_size;
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return false;
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}
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}
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if(negativeSectors != 0)
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{
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ErrorMessage = Localization.Negative_sectors_are_not_supported;
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return false;
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}
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if(overflowSectors != 0)
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{
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ErrorMessage = Localization.Overflow_sectors_are_not_supported;
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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 = string.Format(Localization.Unsupported_media_format_0, mediaType);
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return false;
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}
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if(sectors > uint.MaxValue)
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{
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ErrorMessage = Localization.Too_many_sectors;
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return false;
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}
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_imageInfo = new ImageInfo
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{
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MediaType = mediaType,
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SectorSize = sectorSize,
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Sectors = sectors
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};
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try
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{
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_writingStream = new FileStream(path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None);
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}
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catch(IOException ex)
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{
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ErrorMessage = string.Format(Localization.Could_not_create_new_image_file_exception_0, ex.Message);
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AaruLogging.Exception(ex, Localization.Could_not_create_new_image_file_exception_0, ex.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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/// <inheritdoc />
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public bool WriteMediaTag(byte[] data, MediaTagType tag)
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{
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ErrorMessage = Localization.Unsupported_feature;
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return false;
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}
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/// <inheritdoc />
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public bool WriteSector(byte[] data, ulong sectorAddress, bool negative, SectorStatus sectorStatus)
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{
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if(!IsWriting)
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{
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ErrorMessage = Localization.Tried_to_write_on_a_non_writable_image;
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return false;
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}
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if(negative)
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{
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ErrorMessage = Localization.Unsupported_feature;
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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 = Localization.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 = Localization.Tried_to_write_past_image_size;
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return false;
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}
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_writingStream.Seek((long)(0x40 + 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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/// <inheritdoc />
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public bool WriteSectors(byte[] data, ulong sectorAddress, bool negative, uint length, SectorStatus[] sectorStatus)
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{
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if(!IsWriting)
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{
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ErrorMessage = Localization.Tried_to_write_on_a_non_writable_image;
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return false;
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}
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if(negative)
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{
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ErrorMessage = Localization.Unsupported_feature;
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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 = Localization.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 = Localization.Tried_to_write_past_image_size;
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return false;
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}
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_writingStream.Seek((long)(0x40 + 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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/// <inheritdoc />
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public bool WriteSectorLong(byte[] data, ulong sectorAddress, bool negative, SectorStatus sectorStatus)
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{
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ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
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return false;
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}
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/// <inheritdoc />
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public bool WriteSectorsLong(byte[] data, ulong sectorAddress, bool negative, uint length,
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SectorStatus[] sectorStatus)
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{
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ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
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return false;
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}
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/// <inheritdoc />
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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 = Localization.Image_is_not_opened_for_writing;
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return false;
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}
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_writingStream.Seek(0x40 + 17 * 16 * 256, SeekOrigin.Begin);
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var tmp = new byte[256];
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_writingStream.EnsureRead(tmp, 0, tmp.Length);
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bool isDos = tmp[0x01] == 17 &&
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tmp[0x02] < 16 &&
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tmp[0x27] <= 122 &&
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tmp[0x34] == 35 &&
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tmp[0x35] == 16 &&
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tmp[0x36] == 0 &&
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tmp[0x37] == 1;
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_imageHeader = new Header
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{
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Blocks = (uint)(_imageInfo.Sectors * _imageInfo.SectorSize) / 512,
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Creator = CREATOR_AARU,
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DataOffset = 0x40,
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DataSize = (uint)(_imageInfo.Sectors * _imageInfo.SectorSize),
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Flags = (uint)(_imageInfo.LastMediaSequence != 0
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? VALID_VOLUME_NUMBER + (_imageInfo.MediaSequence & 0xFF)
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: 0),
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HeaderSize = 0x40,
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ImageFormat = isDos ? SectorOrder.Dos : SectorOrder.ProDos,
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Magic = MAGIC,
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Version = 1
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};
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if(!string.IsNullOrEmpty(_imageInfo.Comments))
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{
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_writingStream.Seek(0, SeekOrigin.End);
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tmp = Encoding.UTF8.GetBytes(_imageInfo.Comments);
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_imageHeader.CommentOffset = (uint)_writingStream.Position;
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_imageHeader.CommentSize = (uint)(tmp.Length + 1);
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_writingStream.Write(tmp, 0, tmp.Length);
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_writingStream.WriteByte(0);
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}
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var hdr = new byte[Marshal.SizeOf<Header>()];
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nint hdrPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(Marshal.SizeOf<Header>());
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System.Runtime.InteropServices.Marshal.StructureToPtr(_imageHeader, hdrPtr, true);
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System.Runtime.InteropServices.Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
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System.Runtime.InteropServices.Marshal.FreeHGlobal(hdrPtr);
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_writingStream.Seek(0, SeekOrigin.Begin);
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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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/// <inheritdoc />
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public bool SetImageInfo(ImageInfo imageInfo)
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{
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_imageInfo.Comments = imageInfo.Comments;
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_imageInfo.LastMediaSequence = imageInfo.LastMediaSequence;
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_imageInfo.MediaSequence = imageInfo.MediaSequence;
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return true;
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}
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/// <inheritdoc />
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public bool SetGeometry(uint cylinders, uint heads, uint sectorsPerTrack) => true;
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/// <inheritdoc />
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public bool WriteSectorTag(byte[] data, ulong sectorAddress, bool negative, SectorTagType tag)
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{
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ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
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return false;
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}
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/// <inheritdoc />
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public bool WriteSectorsTag(byte[] data, ulong sectorAddress, bool negative, uint length, SectorTagType tag)
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{
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ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
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return false;
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}
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/// <inheritdoc />
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public bool SetDumpHardware(List<DumpHardware> dumpHardware) => false;
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/// <inheritdoc />
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public bool SetMetadata(Metadata metadata) => false;
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#endregion
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} |