Files
UnrealEngine/Engine/Source/Programs/UnrealBuildTool/System/CustomBuildSteps.cs
2025-05-18 13:04:45 +08:00

111 lines
3.5 KiB
C#

// Copyright Epic Games, Inc. All Rights Reserved.
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using EpicGames.Core;
namespace UnrealBuildTool
{
/// <summary>
/// Stores custom build steps to be executed by a project or plugin
/// </summary>
public class CustomBuildSteps
{
Dictionary<UnrealTargetPlatform, string[]> HostPlatformToCommands = new Dictionary<UnrealTargetPlatform, string[]>();
/// <summary>
/// Construct a custom build steps object from a Json object.
/// </summary>
public CustomBuildSteps(JsonObject RawObject)
{
foreach (string HostPlatformName in RawObject.KeyNames)
{
UnrealTargetPlatform Platform;
if (UnrealTargetPlatform.TryParse(HostPlatformName, out Platform))
{
HostPlatformToCommands.Add(Platform, RawObject.GetStringArrayField(HostPlatformName));
}
}
}
/// <summary>
/// Reads a list of build steps from a Json project or plugin descriptor
/// </summary>
/// <param name="RawObject">The json descriptor object</param>
/// <param name="FieldName">Name of the field to read</param>
/// <param name="OutBuildSteps">Output variable to store the sorted dictionary that was read</param>
/// <returns>True if the field was read (and OutBuildSteps is set), false otherwise.</returns>
public static bool TryRead(JsonObject RawObject, string FieldName, [NotNullWhen(true)] out CustomBuildSteps? OutBuildSteps)
{
JsonObject? BuildStepsObject;
if (RawObject.TryGetObjectField(FieldName, out BuildStepsObject))
{
OutBuildSteps = new CustomBuildSteps(BuildStepsObject);
return true;
}
else
{
OutBuildSteps = null;
return false;
}
}
/// <summary>
/// Reads a list of build steps from a Json project or plugin descriptor
/// </summary>
/// <param name="Writer">Writer to receive json output</param>
/// <param name="FieldName">Name of the field to read</param>
/// <returns>True if the field was read (and OutBuildSteps is set), false otherwise.</returns>
public void Write(JsonWriter Writer, string FieldName)
{
Writer.WriteObjectStart(FieldName);
foreach (KeyValuePair<UnrealTargetPlatform, string[]> Pair in HostPlatformToCommands.OrderBy(x => x.Key.ToString()))
{
Writer.WriteArrayStart(Pair.Key.ToString());
foreach (string Line in Pair.Value)
{
Writer.WriteValue(Line);
}
Writer.WriteArrayEnd();
}
Writer.WriteObjectEnd();
}
/// <summary>
/// Converts this object to a JsonObject to be saved or manipulated.
/// </summary>
/// <returns>The JsonObject representation of this object.</returns>
public JsonObject ToJsonObject()
{
JsonObject CustomBuildStepObject = new JsonObject();
foreach (KeyValuePair<UnrealTargetPlatform, string[]> Pair in HostPlatformToCommands.OrderBy(x => x.Key.ToString()))
{
CustomBuildStepObject.AddOrSetFieldValue(Pair.Key.ToString(), Pair.Value);
}
return CustomBuildStepObject;
}
/// <summary>
/// Tries to get the commands for a given host platform
/// </summary>
/// <param name="HostPlatform">The host platform to look for</param>
/// <param name="OutCommands">Array of commands</param>
/// <returns>True if a list of commands was generated</returns>
public bool TryGetCommands(UnrealTargetPlatform HostPlatform, [NotNullWhen(true)] out string[]? OutCommands)
{
string[]? Commands;
if (HostPlatformToCommands.TryGetValue(HostPlatform, out Commands) && Commands.Length > 0)
{
OutCommands = Commands;
return true;
}
else
{
OutCommands = null;
return false;
}
}
}
}