Init

2025-02-10 00:44:11 +08:00
parent ece733c0e5
commit 1e0c4b8d8c
1640 changed files with 1628924 additions and 0 deletions
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+/*
+ * Tencent is pleased to support the open source community by making Puerts available.
+ * Copyright (C) 2020 THL A29 Limited, a Tencent company.  All rights reserved.
+ * Puerts is licensed under the BSD 3-Clause License, except for the third-party components listed in the file 'LICENSE' which may
+ * be subject to their corresponding license terms. This file is subject to the terms and conditions defined in file 'LICENSE',
+ * which is part of this source code package.
+ */
+
+#include "JSModuleLoader.h"
+#include "Misc/Paths.h"
+#include "Misc/FileHelper.h"
+#include "Algo/Reverse.h"
+#if (ENGINE_MAJOR_VERSION >= 5)
+#include "HAL/PlatformFileManager.h"
+#else
+#include "HAL/PlatformFilemanager.h"
+#endif
+
+namespace PUERTS_NAMESPACE
+{
+static FString PathNormalize(const FString& PathIn)
+{
+    TArray<FString> PathFrags;
+    PathIn.ParseIntoArray(PathFrags, TEXT("/"));
+    Algo::Reverse(PathFrags);
+    TArray<FString> NewPathFrags;
+    bool FromRoot = PathIn.StartsWith(TEXT("/"));
+    while (PathFrags.Num() > 0)
+    {
+        FString E = PathFrags.Pop();
+        if (E != TEXT("") && E != TEXT("."))
+        {
+            if (E == TEXT("..") && NewPathFrags.Num() > 0 && NewPathFrags.Last() != TEXT(".."))
+            {
+                NewPathFrags.Pop();
+            }
+            else
+            {
+                NewPathFrags.Push(E);
+            }
+        }
+    }
+    if (FromRoot)
+    {
+        return TEXT("/") + FString::Join(NewPathFrags, TEXT("/"));
+    }
+    else
+    {
+        return FString::Join(NewPathFrags, TEXT("/"));
+    }
+}
+
+bool DefaultJSModuleLoader::CheckExists(const FString& PathIn, FString& Path, FString& AbsolutePath)
+{
+    IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();
+    FString NormalizedPath = PathNormalize(PathIn);
+    if (PlatformFile.FileExists(*NormalizedPath))
+    {
+        AbsolutePath = IFileManager::Get().ConvertToAbsolutePathForExternalAppForRead(*NormalizedPath);
+        Path = NormalizedPath;
+        return true;
+    }
+
+    return false;
+}
+
+bool DefaultJSModuleLoader::SearchModuleInDir(
+    const FString& Dir, const FString& RequiredModule, FString& Path, FString& AbsolutePath)
+{
+    FString Extension = FPaths::GetExtension(RequiredModule);
+    bool IsJs = Extension == TEXT("js") || Extension == TEXT("mjs") || Extension == TEXT("cjs") || Extension == TEXT("json");
+    if (IsJs && SearchModuleWithExtInDir(Dir, RequiredModule, Path, AbsolutePath))
+        return true;
+    return SearchModuleWithExtInDir(Dir, RequiredModule + ".js", Path, AbsolutePath) ||
+           SearchModuleWithExtInDir(Dir, RequiredModule + ".mjs", Path, AbsolutePath) ||
+           SearchModuleWithExtInDir(Dir, RequiredModule + ".cjs", Path, AbsolutePath) ||
+#if defined(WITH_V8_BYTECODE)
+           SearchModuleWithExtInDir(Dir, RequiredModule + ".mbc", Path, AbsolutePath) ||
+           SearchModuleWithExtInDir(Dir, RequiredModule + ".cbc", Path, AbsolutePath) ||
+#endif
+           SearchModuleWithExtInDir(Dir, RequiredModule / "package.json", Path, AbsolutePath) ||
+           SearchModuleWithExtInDir(Dir, RequiredModule / "index.js", Path, AbsolutePath);
+}
+
+bool DefaultJSModuleLoader::SearchModuleWithExtInDir(
+    const FString& Dir, const FString& RequiredModule, FString& Path, FString& AbsolutePath)
+{
+    return CheckExists(Dir / RequiredModule, Path, AbsolutePath) ||
+           (!Dir.EndsWith(TEXT("node_modules")) && CheckExists(Dir / TEXT("node_modules") / RequiredModule, Path, AbsolutePath));
+}
+
+bool DefaultJSModuleLoader::Search(const FString& RequiredDir, const FString& RequiredModule, FString& Path, FString& AbsolutePath)
+{
+    if (SearchModuleInDir(RequiredDir, RequiredModule, Path, AbsolutePath))
+    {
+        return true;
+    }
+    if (RequiredDir != TEXT("") && !RequiredModule.GetCharArray().Contains('/') && !RequiredModule.EndsWith(TEXT(".js")) &&
+        !RequiredModule.EndsWith(TEXT(".mjs")))
+    {
+        // 调用require的文件所在的目录往上找
+        TArray<FString> pathFrags;
+        RequiredDir.ParseIntoArray(pathFrags, TEXT("/"));
+        pathFrags.Pop();    // has try in "if (SearchModuleInDir(RequiredDir, RequiredModule, Path, AbsolutePath))"
+        while (pathFrags.Num() > 0)
+        {
+            if (!pathFrags.Last().Equals(TEXT("node_modules")))
+            {
+                if (SearchModuleInDir(FString::Join(pathFrags, TEXT("/")), RequiredModule, Path, AbsolutePath))
+                {
+                    return true;
+                }
+            }
+            pathFrags.Pop();
+        }
+    }
+
+    return SearchModuleInDir(FPaths::ProjectContentDir() / ScriptRoot, RequiredModule, Path, AbsolutePath) ||
+           (ScriptRoot != TEXT("JavaScript") &&
+               SearchModuleInDir(FPaths::ProjectContentDir() / TEXT("JavaScript"), RequiredModule, Path, AbsolutePath));
+}
+
+bool DefaultJSModuleLoader::Load(const FString& Path, TArray<uint8>& Content)
+{
+    // return (FPaths::FileExists(FullPath) && FFileHelper::LoadFileToString(Content, *FullPath));
+    IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();
+    IFileHandle* FileHandle = PlatformFile.OpenRead(*Path);
+    if (FileHandle)
+    {
+        int len = FileHandle->Size();
+        Content.Reset(len + 2);
+        Content.AddUninitialized(len);
+        const bool Success = FileHandle->Read(Content.GetData(), len);
+        delete FileHandle;
+
+        return Success;
+    }
+    return false;
+}
+
+FString& DefaultJSModuleLoader::GetScriptRoot()
+{
+    return ScriptRoot;
+}
+
+}    // namespace PUERTS_NAMESPACE