88 lines
2.4 KiB
C#
88 lines
2.4 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2018 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.IO;
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using System.Net;
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using System.Text;
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using ICSharpCode.SharpZipLib.Checksums;
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namespace OpenRA.Mods.Common.UtilityCommands
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{
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public class PngSheetImportMetadataCommand : IUtilityCommand
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{
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string IUtilityCommand.Name { get { return "--png-sheet-import"; } }
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bool IUtilityCommand.ValidateArguments(string[] args)
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{
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return args.Length == 2;
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}
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[Desc("PNGFILE", "Import yaml metadata to png")]
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void IUtilityCommand.Run(Utility utility, string[] args)
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{
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// HACK: This could eventually be merged into the Png class (add a Write method), however this requires complex png writing algorythms.
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var rs = File.OpenRead(args[1]);
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var ws = new MemoryStream();
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using (var bw = new BinaryWriter(ws))
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{
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bw.Write(rs.ReadBytes(8));
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var crc32 = new Crc32();
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for (;;)
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{
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var length = IPAddress.NetworkToHostOrder(rs.ReadInt32());
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var type = Encoding.UTF8.GetString(rs.ReadBytes(4));
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var content = rs.ReadBytes(length);
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var crc = rs.ReadUInt32();
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switch (type)
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{
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case "tEXt":
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break;
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case "IEND":
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rs.Close();
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foreach (var node in MiniYaml.FromFile(Path.ChangeExtension(args[1], "yaml")))
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{
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bw.Write(IPAddress.NetworkToHostOrder(node.Key.Length + 1 + node.Value.Value.Length));
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bw.Write("tEXt".ToCharArray());
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bw.Write(node.Key.ToCharArray());
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bw.Write((byte)0x00);
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bw.Write(node.Value.Value.ToCharArray());
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crc32.Reset();
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crc32.Update(Encoding.ASCII.GetBytes("tEXt"));
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crc32.Update(Encoding.ASCII.GetBytes(node.Key + (char)0x00 + node.Value.Value));
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bw.Write((uint)IPAddress.NetworkToHostOrder((int)crc32.Value));
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}
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bw.Write(0);
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bw.Write(type.ToCharArray());
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bw.Write(crc);
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File.WriteAllBytes(args[1], ws.ToArray());
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ws.Close();
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return;
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default:
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bw.Write(IPAddress.NetworkToHostOrder(length));
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bw.Write(type.ToCharArray());
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bw.Write(content);
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bw.Write(crc);
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break;
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}
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}
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}
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}
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}
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}
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