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A fully native SwiftUI ADE Proof of Concept that leverages macOS on-device intelligence to create a fully featured coding agent experience
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8.6 kB · 181 lines
Swift
at main
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public struct GitFileStatus: Identifiable, Sendable, Equatable { public var id: String { path } public let path: String public let index: String public let worktree: String public let originalPath: String? public var staged: Bool { index != " " && index != "?" } public var conflicted: Bool { index == "U" || worktree == "U" || ["AA", "DD"].contains(index + worktree) }}
public enum GitError: Error, LocalizedError { case command(String) case invalidArgument, dirtyCheckout public var errorDescription: String? { switch self { case .command(let message): message case .invalidArgument: "Invalid Git argument." case .dirtyCheckout: "Commit or stash your changes before this operation." } }}
/// Git is invoked without a shell. References reject option injection; paths follow `--`.public actor GitService { public let directory: URL public init(directory: URL) { self.directory = directory } private func git(_ args: [String], input: Data? = nil) async throws -> String { let result = try await ProcessRunner.run( executable: URL(fileURLWithPath: "/usr/bin/git"), arguments: ["--no-pager"] + args, directory: directory, input: input) guard result.status == 0 else { throw GitError.command(result.error.isEmpty ? result.output : result.error) } guard !result.truncated else { throw GitError.command("Git output exceeded the capture limit. Narrow the query.") } return result.output } private func reference(_ value: String) throws -> String { guard !value.isEmpty, !value.hasPrefix("-"), !value.contains("\0"), !value.contains("\n") else { throw GitError.invalidArgument } return value } private func paths(_ values: [String]) throws -> [String] { for value in values { guard !value.isEmpty, !value.hasPrefix("/"), !value.split(separator: "/").contains(".."), !value.contains("\0") else { throw GitError.invalidArgument } } return values } private func requireClean() async throws { guard try await status().isEmpty else { throw GitError.dirtyCheckout } } public static func parseStatus(_ text: String) -> [GitFileStatus] { let fields = text.split(separator: "\0", omittingEmptySubsequences: true).map(String.init) var rows: [GitFileStatus] = [] var i = 0 while i < fields.count { let field = fields[i] i += 1 guard field.count >= 4 else { continue } let index = String(field.prefix(1)) let worktree = String(field.dropFirst().prefix(1)) var original: String? if index == "R" || index == "C" || worktree == "R" || worktree == "C", i < fields.count { original = fields[i] i += 1 } rows.append( GitFileStatus( path: String(field.dropFirst(3)), index: index, worktree: worktree, originalPath: original)) } return rows } public func status() async throws -> [GitFileStatus] { Self.parseStatus(try await git(["status", "--porcelain=v1", "-z", "--untracked-files=all"])) } public func diff(file: String? = nil, staged: Bool = false) async throws -> String { try await git( ["--literal-pathspecs", "diff", "--no-ext-diff", "--no-color"] + (staged ? ["--cached"] : []) + ["--"] + (try paths(file.map { [$0] } ?? []))) } public func stage(paths values: [String]) async throws { _ = try await git(["--literal-pathspecs", "add", "--"] + paths(values)) } public func unstage(paths values: [String]) async throws { let valid = try paths(values) do { _ = try await git(["rev-parse", "--verify", "HEAD"]) } catch { _ = try await git(["--literal-pathspecs", "rm", "--cached", "--"] + valid) return } _ = try await git(["--literal-pathspecs", "reset", "HEAD", "--"] + valid) } public func applyPatch(_ patch: String, reverse: Bool = false) async throws { let flags = ["apply", "--cached"] + (reverse ? ["--reverse"] : []) _ = try await git(flags + ["--check", "-"], input: Data(patch.utf8)) _ = try await git(flags + ["-"], input: Data(patch.utf8)) } public func commit(message: String) async throws { guard !message.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty else { throw GitError.invalidArgument } _ = try await git(["commit", "-m", message]) } public func history(limit: Int = 100) async throws -> String { try await git(["log", "--oneline", "--decorate", "-n", String(min(max(limit, 1), 1000))]) } public func blame(file: String) async throws -> String { try await git(["--literal-pathspecs", "blame", "--"] + paths([file])) } public func branches() async throws -> String { try await git(["branch", "-avv"]) } public func remotes() async throws -> String { try await git(["remote", "-v"]) } public func fetch(remote: String = "origin") async throws { _ = try await git(["fetch", reference(remote)]) } public func pull(remote: String = "origin") async throws { try await requireClean() _ = try await git(["pull", "--ff-only", reference(remote)]) } public func push(remote: String = "origin") async throws { _ = try await git(["push", reference(remote)]) } public func stash() async throws { _ = try await git(["stash", "push", "--include-untracked"]) } public func stashList() async throws -> String { try await git(["stash", "list"]) } public func popStash() async throws { try await requireClean() _ = try await git(["stash", "pop"]) } public func tags() async throws -> String { try await git(["tag", "--list"]) } public func createTag(_ name: String) async throws { _ = try await git(["tag", reference(name)]) } public func switchBranch(_ name: String, create: Bool = false) async throws { try await requireClean() _ = try await git(["switch"] + (create ? ["-c"] : []) + [reference(name)]) } public func addRemote(name: String, url: String) async throws { _ = try await git(["remote", "add", reference(name), reference(url)]) } public func merge(_ ref: String) async throws { try await requireClean() _ = try await git(["merge", "--no-edit", reference(ref)]) } public func rebase(_ ref: String) async throws { try await requireClean() _ = try await git(["rebase", reference(ref)]) } public func cherryPick(_ ref: String) async throws { try await requireClean() _ = try await git(["cherry-pick", reference(ref)]) } public enum Sequencer: String, CaseIterable, Sendable { case merge, rebase case cherryPick = "cherry-pick" } public func continueOperation(_ operation: Sequencer) async throws { _ = try await git([operation.rawValue, "--continue"]) } public func abortOperation(_ operation: Sequencer) async throws { _ = try await git([operation.rawValue, "--abort"]) } public enum ConflictVersion: Int, CaseIterable, Sendable { case base = 1 case ours = 2 case theirs = 3 } public func conflictVersion(file: String, version: ConflictVersion) async throws -> String { _ = try paths([file]) return try await git(["show", ":\(version.rawValue):\(file)"]) } public func removeWorktree(at url: URL) async throws { guard url.standardizedFileURL != directory.standardizedFileURL else { throw GitError.invalidArgument } // Without --force Git refuses dirty, locked, or otherwise unsafe worktrees. _ = try await git(["worktree", "remove", "--", url.path]) } public func worktrees() async throws -> String { try await git(["worktree", "list"]) } public func createWorktree(at url: URL, branch: String) async throws { _ = try await git(["worktree", "add", "-b", reference(branch), url.path]) } public static func initialize(at directory: URL) async throws { _ = try await GitService(directory: directory).git(["init"]) } public static func clone(url: String, to directory: URL) async throws { let service = GitService(directory: directory.deletingLastPathComponent()) _ = try await service.git(["clone", "--", url, directory.path]) }}