523 lines
18 KiB
C#
523 lines
18 KiB
C#
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/*
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MIT License
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Copyright (c) 2017 Jiulong Wang
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#if UNITY_IOS
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using System;
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using System.Linq;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using UnityEngine;
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using UnityEditor;
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using UnityEditor.Callbacks;
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using UnityEditor.iOS.Xcode;
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using Application = UnityEngine.Application;
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/// <summary>
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/// Adding this post build script to Unity project enables Unity iOS build output to be embedded
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/// into existing Xcode Swift project.
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///
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/// However, since this script touches Unity iOS build output, you will not be able to use Unity
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/// iOS build directly in Xcode. As a result, it is recommended to put Unity iOS build output into
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/// a temporary directory that you generally do not touch, such as '/tmp'.
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///
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/// In order for this to work, necessary changes to the target Xcode Swift project are needed.
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/// Especially the 'AppDelegate.swift' should be modified to properly initialize Unity.
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/// See https://github.com/jiulongw/swift-unity for details.
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/// </summary>
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public static class XcodePostBuild
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{
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/// <summary>
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/// Path to the root directory of Xcode project.
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/// This should point to the directory of '${XcodeProjectName}.xcodeproj'.
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/// It is recommended to use relative path here.
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/// Current directory is the root directory of this Unity project, i.e. the directory of 'Assets' folder.
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/// Sample value: "../xcode"
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/// </summary>
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private const string XcodeProjectRoot = "../../ios";
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/// <summary>
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/// Name of the Xcode project.
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/// This script looks for '${XcodeProjectName} + ".xcodeproj"' under '${XcodeProjectRoot}'.
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/// Sample value: "DemoApp"
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/// </summary>
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private static string XcodeProjectName = Application.productName;
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/// <summary>
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/// Directories, relative to the root directory of the Xcode project, to put generated Unity iOS build output.
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/// </summary>
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private static string ClassesProjectPath = "UnityExport/Classes";
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private static string LibrariesProjectPath = "UnityExport/Libraries";
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private static string DataProjectPath = "UnityExport/Data";
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/// <summary>
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/// Path, relative to the root directory of the Xcode project, to put information about generated Unity output.
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/// </summary>
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private static string ExportsConfigProjectPath = "UnityExport/Exports.xcconfig";
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private static string PbxFilePath = XcodeProjectName + ".xcodeproj/project.pbxproj";
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private const string BackupExtension = ".bak";
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/// <summary>
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/// The identifier added to touched file to avoid double edits when building to existing directory without
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/// replace existing content.
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/// </summary>
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private const string TouchedMarker = "https://github.com/jiulongw/swift-unity#v1";
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[PostProcessBuild]
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public static void OnPostBuild(BuildTarget target, string pathToBuiltProject)
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{
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if (target != BuildTarget.iOS)
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{
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return;
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}
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PatchUnityNativeCode(pathToBuiltProject);
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UpdateUnityIOSExports(pathToBuiltProject);
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UpdateUnityProjectFiles(pathToBuiltProject);
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}
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/// <summary>
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/// Writes current Unity version and output path to 'Exports.xcconfig' file.
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/// </summary>
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private static void UpdateUnityIOSExports(string pathToBuiltProject)
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{
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var config = new StringBuilder();
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config.AppendFormat("UNITY_RUNTIME_VERSION = {0};", Application.unityVersion);
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config.AppendLine();
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config.AppendFormat("UNITY_IOS_EXPORT_PATH = {0};", pathToBuiltProject);
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config.AppendLine();
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var configPath = Path.Combine(XcodeProjectRoot, ExportsConfigProjectPath);
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var configDir = Path.GetDirectoryName(configPath);
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if (!Directory.Exists(configDir))
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{
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Directory.CreateDirectory(configDir);
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}
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File.WriteAllText(configPath, config.ToString());
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}
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/// <summary>
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/// Enumerates Unity output files and add necessary files into Xcode project file.
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/// It only add a reference entry into project.pbx file, without actually copy it.
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/// Xcode pre-build script will copy files into correct location.
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/// </summary>
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private static void UpdateUnityProjectFiles(string pathToBuiltProject)
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{
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var pbx = new PBXProject();
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var pbxPath = Path.Combine(XcodeProjectRoot, PbxFilePath);
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pbx.ReadFromFile(pbxPath);
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// Add UnityExport/Classes
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ProcessUnityDirectory(
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pbx,
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Path.Combine(pathToBuiltProject, "Classes"),
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Path.Combine(XcodeProjectRoot, ClassesProjectPath),
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ClassesProjectPath);
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// Add UnityExport/Libraries
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ProcessUnityDirectory(
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pbx,
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Path.Combine(pathToBuiltProject, "Libraries"),
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Path.Combine(XcodeProjectRoot, LibrariesProjectPath),
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LibrariesProjectPath);
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// Add UnityExport/Data
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var targetGuid = pbx.TargetGuidByName(XcodeProjectName);
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var fileGuid = pbx.AddFolderReference(Path.Combine(pathToBuiltProject, "Data"), DataProjectPath);
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pbx.AddFileToBuild(targetGuid, fileGuid);
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pbx.WriteToFile(pbxPath);
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}
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/// <summary>
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/// Update pbx project file by adding src files and removing extra files that
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/// exists in dest but not in src any more.
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///
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/// This method only updates the pbx project file. It does not copy or delete
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/// files in Swift Xcode project. The Swift Xcode project will do copy and delete
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/// during build, and it should copy files if contents are different, regardless
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/// of the file time.
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/// </summary>
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/// <param name="pbx">The pbx project.</param>
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/// <param name="src">The directory where Unity project is built.</param>
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/// <param name="dest">The directory of the Swift Xcode project where the
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/// Unity project is embedded into.</param>
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/// <param name="projectPathPrefix">The prefix of project path in Swift Xcode
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/// project for Unity code files. E.g. "DempApp/Unity/Classes" for all files
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/// under Classes folder from Unity iOS build output.</param>
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private static void ProcessUnityDirectory(PBXProject pbx, string src, string dest, string projectPathPrefix)
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{
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var targetGuid = pbx.TargetGuidByName(XcodeProjectName);
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if (string.IsNullOrEmpty(targetGuid))
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{
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throw new Exception(string.Format("TargetGuid could not be found for '{0}'", XcodeProjectName));
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}
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// newFiles: array of file names in build output that do not exist in project.pbx manifest.
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// extraFiles: array of file names in project.pbx manifest that do not exist in build output.
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// Build output files that already exist in project.pbx manifest will be skipped to minimize
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// changes to project.pbx file.
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string[] newFiles, extraFiles;
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CompareDirectories(src, dest, out newFiles, out extraFiles);
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foreach (var f in newFiles)
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{
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if (ShouldExcludeFile(f))
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{
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continue;
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}
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var projPath = Path.Combine(projectPathPrefix, f);
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if (!pbx.ContainsFileByProjectPath(projPath))
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{
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var guid = pbx.AddFile(projPath, projPath);
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pbx.AddFileToBuild(targetGuid, guid);
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Debug.LogFormat("Added file to pbx: '{0}'", projPath);
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}
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}
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foreach (var f in extraFiles)
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{
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var projPath = Path.Combine(projectPathPrefix, f);
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if (pbx.ContainsFileByProjectPath(projPath))
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{
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var guid = pbx.FindFileGuidByProjectPath(projPath);
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pbx.RemoveFile(guid);
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Debug.LogFormat("Removed file from pbx: '{0}'", projPath);
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}
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}
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}
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/// <summary>
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/// Compares the directories. Returns files that exists in src and
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/// extra files that exists in dest but not in src any more.
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/// </summary>
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private static void CompareDirectories(string src, string dest, out string[] srcFiles, out string[] extraFiles)
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{
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srcFiles = GetFilesRelativePath(src);
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var destFiles = GetFilesRelativePath(dest);
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var extraFilesSet = new HashSet<string>(destFiles);
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extraFilesSet.ExceptWith(srcFiles);
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extraFiles = extraFilesSet.ToArray();
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}
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private static string[] GetFilesRelativePath(string directory)
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{
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var results = new List<string>();
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if (Directory.Exists(directory))
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{
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foreach (var path in Directory.GetFiles(directory, "*", SearchOption.AllDirectories))
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{
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var relative = path.Substring(directory.Length).TrimStart('/');
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results.Add(relative);
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}
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}
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return results.ToArray();
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}
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private static bool ShouldExcludeFile(string fileName)
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{
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if (fileName.EndsWith(".bak", StringComparison.OrdinalIgnoreCase))
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{
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return true;
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}
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return false;
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}
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/// <summary>
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/// Make necessary changes to Unity build output that enables it to be embedded into existing Xcode project.
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/// </summary>
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private static void PatchUnityNativeCode(string pathToBuiltProject)
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{
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EditMainMM(Path.Combine(pathToBuiltProject, "Classes/main.mm"));
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EditUnityAppControllerH(Path.Combine(pathToBuiltProject, "Classes/UnityAppController.h"));
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EditUnityAppControllerMM(Path.Combine(pathToBuiltProject, "Classes/UnityAppController.mm"));
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if (Application.unityVersion == "2017.1.1f1")
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{
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EditMetalHelperMM(Path.Combine(pathToBuiltProject, "Classes/Unity/MetalHelper.mm"));
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}
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// TODO: Parse unity version number and do range comparison.
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if (Application.unityVersion.StartsWith("2017.3.0f") || Application.unityVersion.StartsWith("2017.3.1f"))
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{
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EditSplashScreenMM(Path.Combine(pathToBuiltProject, "Classes/UI/SplashScreen.mm"));
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}
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}
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/// <summary>
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/// Edit 'main.mm': removes 'main' entry that would conflict with the Xcode project it embeds into.
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/// </summary>
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private static void EditMainMM(string path)
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{
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EditCodeFile(path, line =>
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{
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if (line.TrimStart().StartsWith("int main", StringComparison.Ordinal))
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{
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return line.Replace("int main", "int old_main");
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}
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return line;
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});
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}
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/// <summary>
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/// Edit 'UnityAppController.h': returns 'UnityAppController' from 'AppDelegate' class.
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/// </summary>
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private static void EditUnityAppControllerH(string path)
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{
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var inScope = false;
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var markerDetected = false;
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var markerAdded = false;
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// Add static GetAppController
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EditCodeFile(path, line =>
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{
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inScope |= line.Contains("- (void)startUnity:");
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if (inScope)
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{
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if (line.Trim() == "")
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{
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inScope = false;
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return new string[]
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{
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"",
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"// Added by " + TouchedMarker,
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"+ (UnityAppController*)GetAppController;",
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""
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};
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}
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}
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return new string[] { line };
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});
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inScope = false;
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markerDetected = false;
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// Modify inline GetAppController
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EditCodeFile(path, line =>
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{
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inScope |= line.Contains("inline UnityAppController");
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if (inScope && !markerDetected)
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{
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if (line.Trim() == "}")
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{
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inScope = false;
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markerDetected = true;
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return new string[]
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{
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"// }",
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"",
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"static inline UnityAppController* GetAppController()",
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"{",
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" return [UnityAppController GetAppController];",
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"}",
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};
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}
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if (!markerAdded)
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{
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markerAdded = true;
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return new string[]
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{
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"// Modified by " + TouchedMarker,
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"// " + line,
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};
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}
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return new string[] { "// " + line };
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}
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return new string[] { line };
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});
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}
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/// <summary>
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/// Edit 'UnityAppController.mm': triggers 'UnityReady' notification after Unity is actually started.
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/// </summary>
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private static void EditUnityAppControllerMM(string path)
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{
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EditCodeFile(path, line =>
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{
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if (line.Trim() == "@end")
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{
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return new string[]
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{
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"",
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"// Added by " + TouchedMarker,
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"static UnityAppController *unityAppController = nil;",
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"",
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@"+ (UnityAppController*)GetAppController",
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"{",
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" static dispatch_once_t onceToken;",
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" dispatch_once(&onceToken, ^{",
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" unityAppController = [[self alloc] init];",
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" });",
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" return unityAppController;",
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"}",
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"",
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line,
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};
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}
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return new string[] { line };
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});
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}
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/// <summary>
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/// Edit 'MetalHelper.mm': fixes a bug (only in 2017.1.1f1) that causes crash.
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/// </summary>
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private static void EditMetalHelperMM(string path)
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{
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var markerDetected = false;
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EditCodeFile(path, line =>
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{
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markerDetected |= line.Contains(TouchedMarker);
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if (!markerDetected && line.Trim() == "surface->stencilRB = [surface->device newTextureWithDescriptor: stencilTexDesc];")
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{
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return new string[]
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{
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"",
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" // Modified by " + TouchedMarker,
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" // Default stencilTexDesc.usage has flag 1. In runtime it will cause assertion failure:",
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" // validateRenderPassDescriptor:589: failed assertion `Texture at stencilAttachment has usage (0x01) which doesn't specify MTLTextureUsageRenderTarget (0x04)'",
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" // Adding MTLTextureUsageRenderTarget seems to fix this issue.",
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" stencilTexDesc.usage |= MTLTextureUsageRenderTarget;",
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line,
|
|||
|
};
|
|||
|
}
|
|||
|
|
|||
|
return new string[] { line };
|
|||
|
});
|
|||
|
}
|
|||
|
|
|||
|
/// <summary>
|
|||
|
/// Edit 'SplashScreen.mm': Unity introduces its own 'LaunchScreen.storyboard' since 2017.3.0f3.
|
|||
|
/// Disable it here and use Swift project's launch screen instead.
|
|||
|
/// </summary>
|
|||
|
private static void EditSplashScreenMM(string path)
|
|||
|
{
|
|||
|
var markerDetected = false;
|
|||
|
var markerAdded = false;
|
|||
|
var inScope = false;
|
|||
|
var level = 0;
|
|||
|
|
|||
|
EditCodeFile(path, line =>
|
|||
|
{
|
|||
|
inScope |= line.Trim() == "void ShowSplashScreen(UIWindow* window)";
|
|||
|
markerDetected |= line.Contains(TouchedMarker);
|
|||
|
|
|||
|
if (inScope && !markerDetected)
|
|||
|
{
|
|||
|
if (line.Trim() == "{")
|
|||
|
{
|
|||
|
level++;
|
|||
|
}
|
|||
|
else if (line.Trim() == "}")
|
|||
|
{
|
|||
|
level--;
|
|||
|
}
|
|||
|
|
|||
|
if (line.Trim() == "}" && level == 0)
|
|||
|
{
|
|||
|
inScope = false;
|
|||
|
}
|
|||
|
|
|||
|
if (level > 0 && line.Trim().StartsWith("bool hasStoryboard"))
|
|||
|
{
|
|||
|
return new string[]
|
|||
|
{
|
|||
|
" // " + line,
|
|||
|
" bool hasStoryboard = false;",
|
|||
|
};
|
|||
|
}
|
|||
|
|
|||
|
if (!markerAdded)
|
|||
|
{
|
|||
|
markerAdded = true;
|
|||
|
return new string[]
|
|||
|
{
|
|||
|
"// Modified by " + TouchedMarker,
|
|||
|
line,
|
|||
|
};
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return new string[] { line };
|
|||
|
});
|
|||
|
}
|
|||
|
|
|||
|
private static void EditCodeFile(string path, Func<string, string> lineHandler)
|
|||
|
{
|
|||
|
EditCodeFile(path, line =>
|
|||
|
{
|
|||
|
return new string[] { lineHandler(line) };
|
|||
|
});
|
|||
|
}
|
|||
|
|
|||
|
private static void EditCodeFile(string path, Func<string, IEnumerable<string>> lineHandler)
|
|||
|
{
|
|||
|
var bakPath = path + ".bak";
|
|||
|
if (File.Exists(bakPath))
|
|||
|
{
|
|||
|
File.Delete(bakPath);
|
|||
|
}
|
|||
|
|
|||
|
File.Move(path, bakPath);
|
|||
|
|
|||
|
using (var reader = File.OpenText(bakPath))
|
|||
|
using (var stream = File.Create(path))
|
|||
|
using (var writer = new StreamWriter(stream))
|
|||
|
{
|
|||
|
string line;
|
|||
|
while ((line = reader.ReadLine()) != null)
|
|||
|
{
|
|||
|
var outputs = lineHandler(line);
|
|||
|
foreach (var o in outputs)
|
|||
|
{
|
|||
|
writer.WriteLine(o);
|
|||
|
}
|
|||
|
}
|
|||
|
}
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
#endif
|