Subsonic API: added artist images in getCoverArt endpoint, fixes #392

src/libs/utils/include/utils/Path.hpp

@@ -28,23 +28,39 @@
 
 namespace PathUtils
 {
-	std::uint32_t computeCrc32(const std::filesystem::path& p);
+    std::uint32_t computeCrc32(const std::filesystem::path& p);
 
-	// Make sure the given path is a directory
-	// Create it if needed
-	bool ensureDirectory(const std::filesystem::path& dir);
+    // Make sure the given path is a directory
+    // Create it if needed
+    bool ensureDirectory(const std::filesystem::path& dir);
 
-	// Get the last write time since Epoch
-	Wt::WDateTime getLastWriteTime(const std::filesystem::path& dir);
+    // Get the last write time since Epoch
+    Wt::WDateTime getLastWriteTime(const std::filesystem::path& dir);
 
-	// returns false if aborted by user
-	bool exploreFilesRecursive(const std::filesystem::path& directory, std::function<bool(std::error_code, const std::filesystem::path&)> cb, const std::filesystem::path* excludeDirFileName = {});
+    // returns false if aborted by user
+    bool exploreFilesRecursive(const std::filesystem::path& directory, std::function<bool(std::error_code, const std::filesystem::path&)> cb, const std::filesystem::path* excludeDirFileName = {});
 
-	// Check if file's extension is one of provided extensions
-	bool hasFileAnyExtension(const std::filesystem::path& file, const std::vector<std::filesystem::path>& extensions);
+    // Check if file's extension is one of provided extensions
+    bool hasFileAnyExtension(const std::filesystem::path& file, const std::vector<std::filesystem::path>& extensions);
 
-	// Check if a path is within a directory (excludeDirFileName is a relative can be used to exclude a whole directory and its subdirectory, must not have parent_path)
-	bool isPathInRootPath(const std::filesystem::path& path, const std::filesystem::path& rootPath, const std::filesystem::path* excludeDirFileName = {});
+    // Check if a path is within a directory (excludeDirFileName is a relative can be used to exclude a whole directory and its subdirectory, must not have parent_path)
+    bool isPathInRootPath(const std::filesystem::path& path, const std::filesystem::path& rootPath, const std::filesystem::path* excludeDirFileName = {});
 
+    std::filesystem::path getLongestCommonPath(const std::filesystem::path& path1, const std::filesystem::path& path2);
 
+    template <typename Iterator>
+    std::filesystem::path getLongestCommonPath(Iterator first, Iterator last)
+    {
+        std::filesystem::path longestCommonPath;
+
+        if (first == last)
+            return longestCommonPath;
+
+        longestCommonPath = *first++;
+
+        while (first != last)
+            longestCommonPath = PathUtils::getLongestCommonPath(*first++, longestCommonPath);
+
+        return longestCommonPath;
+    }
 }