[clang-tools-extra] [clang-doc] Add --asset option to clang-doc (PR #94717)

[via cfe-commits]

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@@ -131,12 +137,55 @@ std::string GetExecutablePath(const char *Argv0, void *MainAddr) {
   return llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
 }
 
+void GetAssetFiles(clang::doc::ClangDocContext &CDCtx) {
+  std::error_code Code;
+  for (auto DirIt = llvm::sys::fs::directory_iterator(
+                std::string(UserAssetPath), Code),
+            dir_end = llvm::sys::fs::directory_iterator();
+       !Code && DirIt != dir_end; DirIt.increment(Code)) {
+    llvm::SmallString<128> filePath = llvm::SmallString<128>(DirIt->path());
+    if (llvm::sys::fs::is_regular_file(filePath)) {
+      if (filePath.ends_with(".css")) {
+        CDCtx.UserStylesheets.insert(CDCtx.UserStylesheets.begin(),
+                                     std::string(filePath));
+      } else if (filePath.ends_with(".js")) {
+        CDCtx.FilesToCopy.emplace_back(filePath.str());
+      }
+    }
+  }
+}
+
+void GetDefaultAssetFiles(const char *Argv0,
+                          clang::doc::ClangDocContext &CDCtx) {
+  void *MainAddr = (void *)(intptr_t)GetExecutablePath;
+  std::string ClangDocPath = GetExecutablePath(Argv0, MainAddr);
+  llvm::SmallString<128> NativeClangDocPath;
+  llvm::sys::path::native(ClangDocPath, NativeClangDocPath);
+
+  llvm::SmallString<128> AssetsPath;
+  AssetsPath = llvm::sys::path::parent_path(NativeClangDocPath);
+  llvm::sys::path::append(AssetsPath, "..", "share", "clang");
+  llvm::SmallString<128> DefaultStylesheet;
+  llvm::sys::path::native(AssetsPath, DefaultStylesheet);
+  llvm::sys::path::append(DefaultStylesheet,
+                          "clang-doc-default-stylesheet.css");
+  llvm::SmallString<128> IndexJS;
+  llvm::sys::path::native(AssetsPath, IndexJS);
+  llvm::sys::path::append(IndexJS, "index.js");
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PeterChou1 wrote:

nope I added a check

https://github.com/llvm/llvm-project/pull/94717