Add repository file browser

ios/Sources/Support.swift

@@ -124,6 +124,66 @@ func configureTextCell(_ cell: UITableViewCell, title: String, detail: String, i
     cell.backgroundColor = .systemBackground
 }
 
+func configureRepositoryContentCell(_ cell: UITableViewCell, row: RepositoryContentRow) {
+    let directory = row.kind == "dir"
+    let detail = directory
+        ? "Folder"
+        : ByteCountFormatter.string(fromByteCount: row.size, countStyle: .file)
+    configureTextCell(
+        cell,
+        title: row.name,
+        detail: detail,
+        image: UIImage(systemName: directory ? "folder.fill" : "doc")
+    )
+    cell.accessoryType = .disclosureIndicator
+}
+
+@MainActor
+func showRepositoryContent(
+    _ row: RepositoryContentRow,
+    context: AppContext,
+    owner: String,
+    repository: String,
+    navigationController: UINavigationController?
+) {
+    let destination: UIViewController = row.kind == "dir"
+        ? RepositoryDirectoryViewController(
+            context: context,
+            owner: owner,
+            repository: repository,
+            path: row.path
+        )
+        : RepositoryFileViewController(
+            context: context,
+            owner: owner,
+            repository: repository,
+            path: row.path
+        )
+    navigationController?.pushViewController(destination, animated: true)
+}
+
+func sourceLanguage(_ path: String) -> String? {
+    let filename = (path as NSString).lastPathComponent.lowercased()
+    let filenames = [
+        "cmakelists.txt": "cmake", "dockerfile": "dockerfile", "gemfile": "ruby",
+        "makefile": "makefile", "podfile": "ruby",
+    ]
+    if let language = filenames[filename] { return language }
+    let languages = [
+        "asm": "x86asm", "c": "c", "cc": "cpp", "clj": "clojure", "cpp": "cpp",
+        "cs": "csharp", "css": "css", "dart": "dart", "ex": "elixir", "exs": "elixir",
+        "fs": "fsharp", "go": "go", "groovy": "groovy", "h": "cpp", "hpp": "cpp",
+        "hs": "haskell", "html": "xml", "java": "java", "jl": "julia", "js": "javascript",
+        "json": "json", "jsx": "javascript", "kt": "kotlin", "kts": "kotlin", "lua": "lua",
+        "m": "objectivec", "md": "markdown", "mm": "objectivec", "php": "php", "pl": "perl",
+        "plist": "xml", "ps1": "powershell", "py": "python", "r": "r", "rb": "ruby",
+        "rs": "rust", "scala": "scala", "scss": "scss", "sh": "bash", "sql": "sql",
+        "swift": "swift", "toml": "ini", "ts": "typescript", "tsx": "typescript",
+        "txt": "plaintext", "xml": "xml", "yaml": "yaml", "yml": "yaml",
+    ]
+    return languages[(path as NSString).pathExtension.lowercased()]
+}
+
 func symbolText(_ symbol: String, text: String, font: UIFont, color: UIColor) -> NSAttributedString {
     let output = NSMutableAttributedString()
     if let image = UIImage(systemName: symbol)?.withTintColor(color, renderingMode: .alwaysOriginal) {