Start work on CLI tool

LibIRD/IRD.cs

@@ -1285,7 +1285,7 @@ namespace LibIRD
             print.AppendLine("=============");
 
             // Append IRD fields to string builder
-            print.AppendLine($"Magic:        3IRD");
+            print.AppendLine($"Magic:        {Encoding.ASCII.GetString(Magic)}");
             print.AppendLine($"IRD Version:  {Version}");
             print.AppendLine($"Title ID:     {TitleID}");
             print.AppendLine($"Title:        {Title}");

LibIRD/LibIRD.csproj

@@ -9,16 +9,16 @@
     <!-- Package Properties -->
     <Authors>Deterous</Authors>
     <Description>Library for ISO Rebuild Data</Description>
-    <Copyright>Copyright (c) Deterous 2023</Copyright>
+    <Copyright>Copyright (c) 2023 Deterous</Copyright>
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <RepositoryUrl>https://github.com/Deterous/LibIRD</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <PackageTags>ps3 iso ird</PackageTags>
+    <PackageTags>ps3 iso ird redump</PackageTags>
     <PackageLicenseExpression>GPL-3.0-only</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
-    <None Include="../README.md" Pack="true" PackagePath=""/>
+    <None Include="./README.md" Pack="true" PackagePath=""/>
   </ItemGroup>
   
   <ItemGroup>

LibIRD/ParamSFO.cs

@@ -100,6 +100,10 @@ namespace LibIRD
             get
             {
                 int index = Array.FindIndex(Params, param => param.Name ==  key);
+                if (index == -1)
+                    return null;
+                if (Params[index].DataFormat == 0x0404)
+                    return Params[index].IntValue.ToString();
                 return Params[index].StringValue;
             }
         }

LibIRD/README.md

@@ -0,0 +1,40 @@
+## How to use the LibIRD library
+
+LibIRD was originally made for creating reproducible, redump-style IRDs when dumping PS3 discs with [MPF](https://github.com/SabreTools/MPF). If you wish to integrate LibIRD into your own application, the following are some examples.
+
+### Reproducible, redump-style IRDs
+
+The standard way of generating a reproducible, redump-style IRD is with a redump ISO file and a redump key file (e.g. http://redump.org/disc/28721/key/):
+```cs
+byte[] discKey = File.ReadAllBytes("./game.key");
+IRD ird = new ReIRD("./game.iso", discKey);
+```
+Alternatively, the disc key can be extracted from a [GetKey](https://archive.org/download/GetKeyR2GameOS.7z/GetKey-r2-GameOS.7z) log file obtained from a PS3 (or when dumping using [ManaGunZ](https://github.com/Zarh/ManaGunZ/))
+```cs
+IRD ird = new ReIRD("./game.iso", "./game.getkey.log");
+```
+
+### Custom IRDs
+
+Functionality is also provided for creating IRDs with a custom disc key, disc ID, and PIC:
+```cs
+byte[] discKey = new byte[16];
+byte[] discID = new byte[16];
+byte[] PIC = new byte[115];
+// Set vars to desired values
+IRD ird = new IRD("./game.iso", discKey, discID, discPIC);
+```
+As before, a GetKey log file can also be used with an ISO to create a custom IRD, with the disc key, disc ID, and PIC all being extracted from the log file (rather than just the key for redump-style IRDs).
+```cs
+IRD ird = new IRD("./game.iso", "./game.getkey.log");
+```
+Finally, an existing IRD file can be read to create an IRD:
+ ```cs
+IRD ird = IRD.Read("./game.ird")
+```
+An IRD can be then be tweaked, its fields printed, and written to a new IRD:
+```cs
+ird.UID = 0x9F1A51D8;
+ird.Print();
+ird.Write("game2.ird");
+```