Verify command

LibIRD/IRD.cs

@@ -1733,7 +1733,83 @@ namespace LibIRD
             }
         }
 
-#endregion
+        #endregion
+
+        #region IRD Validation
+
+        /// <summary>
+        /// Returns dictionary of file paths and their offset
+        /// </summary>
+        /// <param name="cd">CDReader object</param>
+        public Dictionary<string, byte[]> GetFileHashes()
+        {
+            using MemoryStream headerStream = new MemoryStream(Header);
+            using GZipStream gzStream = new GZipStream(headerStream, CompressionMode.Decompress);
+            using MemoryStream isoStream = new MemoryStream();
+#if NETCOREAPP || NETSTANDARD || NET40_OR_GREATER
+            gzStream.CopyTo(isoStream);
+#else
+            byte[] buffer = new byte[SectorSize];
+            int bytesRead;
+            while ((bytesRead = gzStream.Read(buffer, 0, buffer.Length)) > 0)
+            {
+                isoStream.Write(buffer, 0, bytesRead);
+            }
+#endif
+            isoStream.Position = 0;
+            using CDReader reader = new CDReader(isoStream);
+
+            // Get all file paths and their offsets
+            var files = new Dictionary<string, long>();
+            DiscDirectoryInfo rootDir = reader.GetDirectoryInfo("\\");
+            GetFileOffsets(reader, rootDir, files);
+
+            // Get all paths at each offset
+            var offsetToHash = new Dictionary<long, byte[]>();
+            for (int i = 0; i < FileCount; i++)
+                offsetToHash[FileKeys[i]] = FileHashes[i];
+
+            // Return dictionary of paths and hashes
+            var result = new Dictionary<string, byte[]>();
+            foreach (KeyValuePair<string, long> kvp in files)
+            {
+                if (offsetToHash.ContainsKey(kvp.Value))
+                    result[kvp.Key] = offsetToHash[kvp.Value];
+            }
+            return result;
+        }
+
+        /// <summary>
+        /// Gets all file paths from the ISO header
+        /// </summary>
+        /// <param name="reader">CDReader object</param>
+        /// <param name="path">Path to look within</param>
+        /// <param name="files">Dictionary of files and their offset</param>
+        public void GetFileOffsets(CDReader reader, DiscDirectoryInfo path, Dictionary<string, long> files)
+        {
+            foreach (DiscFileInfo fileInfo in path.GetFiles())
+            {
+                string filePath = fileInfo.FullName;
+                Range<long, long>[] fileExtent = reader.PathToClusters(filePath);
+                if (fileExtent == null && fileExtent.Length == 0)
+                    throw new IOException($"Unexpected file extents for {filePath}");
+                long offset = fileExtent[0].Offset;
+                for (int i = 1; i < fileExtent.Length; i++)
+                {
+                    if (fileExtent[i] == null)
+                        throw new IOException($"Unexpected file extents for {filePath}");
+                    if (fileExtent[i].Offset < offset)
+                        offset = fileExtent[i].Offset;
+                }
+                files[filePath] = offset;
+            }
+            foreach (DiscDirectoryInfo dirInfo in path.GetDirectories())
+            {
+                GetFileOffsets(reader, dirInfo, files);
+            }
+        }
+
+        #endregion
 
         #region Helper Functions
 

LibIRD/LibIRD.csproj

@@ -2,12 +2,12 @@
 
   <PropertyGroup>
     <!-- Assembly Properties -->
-    <RuntimeIdentifiers>win-x86;win-x64;win-arm64;linux-x64;linux-arm64;osx-x64;osx-arm64</RuntimeIdentifiers>
+    <TargetFrameworks>net20;net35;net40;net452;net462;net472;net48;netcoreapp3.1;net5.0;net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
     <CheckEolTargetFramework>false</CheckEolTargetFramework>
     <LangVersion>latest</LangVersion>
     <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <Version>0.9.4</Version>
+    <Version>0.9.5</Version>
     <PackageOutputPath>../nupkg</PackageOutputPath>
 
     <!-- Avoid inexact read with 'System.IO.Stream.Read' -->
@@ -24,14 +24,6 @@
     <PackageLicenseExpression>GPL-3.0-only</PackageLicenseExpression>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
   </PropertyGroup>
-  
-  <PropertyGroup Condition="$(RuntimeIdentifier.StartsWith(`osx-arm`))">
-    <TargetFrameworks>net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
-  </PropertyGroup>
-  
-  <PropertyGroup Condition="!$(RuntimeIdentifier.StartsWith(`osx-arm`))">
-    <TargetFrameworks>net20;net35;net40;net452;net462;net472;net48;netcoreapp3.1;net5.0;net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
-  </PropertyGroup>
 
   <ItemGroup>
     <None Include="./README.md" Pack="true" PackagePath="" />
@@ -44,7 +36,7 @@
 
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="SabreTools.Hashing" Version="1.4.0" />
+    <PackageReference Include="SabreTools.Hashing" Version="1.5.0" />
   </ItemGroup>
 
 </Project>