refactor(new_editor): continue architecture closeout

new_editor/app/Features/Project/ProjectBrowserModelInternal.cpp

@@ -0,0 +1,96 @@
+#include "ProjectBrowserModelInternal.h"
+
+#include "Support/StringEncoding.h"
+
+#include <algorithm>
+#include <cctype>
+#include <system_error>
+
+namespace XCEngine::UI::Editor::App::ProjectBrowserModelInternal {
+
+std::string ToLowerCopy(std::string value) {
+    std::transform(
+        value.begin(),
+        value.end(),
+        value.begin(),
+        [](unsigned char character) {
+            return static_cast<char>(std::tolower(character));
+        });
+    return value;
+}
+
+std::string PathToUtf8String(const std::filesystem::path& path) {
+    return Support::WideToUtf8(path.native());
+}
+
+std::string NormalizePathSeparators(std::string value) {
+    std::replace(value.begin(), value.end(), '\\', '/');
+    return value;
+}
+
+std::string BuildRelativeItemId(
+    const std::filesystem::path& path,
+    const std::filesystem::path& assetsRoot) {
+    const std::filesystem::path relative =
+        std::filesystem::relative(path, assetsRoot.parent_path());
+    const std::string normalized =
+        NormalizePathSeparators(PathToUtf8String(relative.lexically_normal()));
+    return normalized.empty() ? std::string(kAssetsRootId) : normalized;
+}
+
+std::string BuildAssetDisplayName(const std::filesystem::path& path, bool directory) {
+    if (directory) {
+        return PathToUtf8String(path.filename());
+    }
+
+    const std::string filename = PathToUtf8String(path.filename());
+    const std::size_t extensionOffset = filename.find_last_of('.');
+    if (extensionOffset == std::string::npos || extensionOffset == 0u) {
+        return filename;
+    }
+
+    return filename.substr(0u, extensionOffset);
+}
+
+bool IsMetaFile(const std::filesystem::path& path) {
+    return ToLowerCopy(path.extension().string()) == ".meta";
+}
+
+bool HasChildDirectories(const std::filesystem::path& folderPath) {
+    std::error_code errorCode = {};
+    const std::filesystem::directory_iterator end = {};
+    for (std::filesystem::directory_iterator iterator(folderPath, errorCode);
+         !errorCode && iterator != end;
+         iterator.increment(errorCode)) {
+        if (iterator->is_directory(errorCode)) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+std::vector<std::filesystem::path> CollectSortedChildDirectories(
+    const std::filesystem::path& folderPath) {
+    std::vector<std::filesystem::path> paths = {};
+    std::error_code errorCode = {};
+    const std::filesystem::directory_iterator end = {};
+    for (std::filesystem::directory_iterator iterator(folderPath, errorCode);
+         !errorCode && iterator != end;
+         iterator.increment(errorCode)) {
+        if (iterator->is_directory(errorCode)) {
+            paths.push_back(iterator->path());
+        }
+    }
+
+    std::sort(
+        paths.begin(),
+        paths.end(),
+        [](const std::filesystem::path& lhs, const std::filesystem::path& rhs) {
+            return ToLowerCopy(PathToUtf8String(lhs.filename())) <
+                ToLowerCopy(PathToUtf8String(rhs.filename()));
+        });
+    return paths;
+}
+
+} // namespace XCEngine::UI::Editor::App::ProjectBrowserModelInternal