git_on_dart 0.1.2

Pure Dart git implementation optimized for Flutter mobile apps. Provides local and remote git operations (init, commit, push, pull, merge, rebase) with HTTPS/SSH authentication.

git_on_dart

A pure Dart implementation of Git, optimized for Flutter mobile applications (Android & iOS). Build native Git clients for mobile with full local and remote repository support.

Features

Local Operations

• ✅ Repository Management: init, open
• ✅ Staging: add, status
• ✅ Commits: commit, log
• ✅ Branching: create, delete, list branches
• ✅ Checkout: switch branches and restore files
• ✅ Merging: 3-way merge with conflict detection
• ✅ Rebasing: interactive rebase support

Remote Operations

• ✅ Remote Management: add, remove, list remotes
• ✅ Fetch: download refs and objects from remote
• ✅ Push: upload commits to remote (with force option)
• ✅ Pull: fetch and merge in one operation
• ✅ Authentication: HTTPS (token, basic auth), SSH (key-based)

Technical Features

• 🚀 Git Protocol Compatible: Standard DIRC index format, SHA-1 hashing, tree objects
• 📱 Mobile Optimized: Memory-efficient streaming I/O, async/await throughout
• 🔒 Type Safe: Strong typing with comprehensive error handling via GitResult<T>
• ✨ Flutter Ready: Works seamlessly with Flutter for Android and iOS
• 🌐 Cross-Platform: Android, iOS, Linux, macOS, Windows

Installation

Add to your pubspec.yaml:

dependencies:
  git_on_dart: ^0.1.0

Then run:

dart pub get

Quick Start

Initialize a Repository

import 'package:git_on_dart/git_on_dart.dart';

// Create a new repository
final repo = await GitRepository.init('/path/to/repo');

// Or open an existing one
final repo = await GitRepository.open('/path/to/repo');

Basic Workflow

// Stage files
final addOp = AddOperation(repo);
await addOp.addFiles(['lib/main.dart', 'pubspec.yaml']);

// Check status
final statusOp = StatusOperation(repo);
final status = await statusOp.getStatus();
print('Modified: ${status.modified.length}');
print('Staged: ${status.staged.length}');

// Commit changes
final commitOp = CommitOperation(repo);
final author = GitAuthor(
  name: 'Your Name',
  email: '[e-mail]',
  timestamp: DateTime.now(),
);
final result = await commitOp.commit(
  message: 'Initial commit',
  author: author,
);
print('Commit: ${result.data}');

Branching and Merging

// Create and switch to a new branch
await repo.refManager.createBranch('feature-branch');
final checkoutOp = CheckoutOperation(repo);
await checkoutOp.checkout('feature-branch');

// Make changes and commit...

// Switch back and merge
await checkoutOp.checkout('main');
final mergeOp = MergeOperation(repo);
final mergeResult = await mergeOp.merge('feature-branch');

if (mergeResult.hasConflicts) {
  print('Conflicts in: ${mergeResult.conflicts.keys}');
  // Handle conflicts...
}

Remote Operations

// Add a remote
final remoteManager = RemoteManager(repo);
await remoteManager.addRemote(
  name: 'origin',
  url: 'https://github.com/username/repo.git',
);

// Configure authentication
final credentials = HttpsCredentials.token('your_github_token');

// Push changes
final pushOp = PushOperation(repo);
final pushResult = await pushOp.push(
  remoteName: 'origin',
  refspec: 'main:main',
  credentials: credentials,
);

// Pull changes
final pullOp = PullOperation(repo);
final pullResult = await pullOp.pull(
  remoteName: 'origin',
  branch: 'main',
  credentials: credentials,
);

SSH Authentication

// Using SSH keys (now fully supported!)
final sshCreds = SshCredentials(
  privateKeyPath: '/path/to/id_rsa',
  passphrase: 'optional_passphrase', // if key is encrypted
);

// Push via SSH
await pushOp.push(
  remoteName: 'origin',
  refspec: 'main:main',
  credentials: sshCreds,
);

// Fetch via SSH
final fetchOp = FetchOperation(repo);
await fetchOp.fetch(
  remoteName: 'origin',
  credentials: sshCreds,
);

// Supported SSH URL formats:
// - [e-mail]:user/repo.git
// - ssh://[e-mail]/user/repo.git

Error Handling

All operations return GitResult<T> for consistent error handling:

final result = await commitOp.commit(
  message: 'My commit',
  author: author,
);

if (result.isSuccess) {
  print('Commit hash: ${result.data}');
} else {
  print('Error: ${result.error?.message}');
  print('Type: ${result.error?.type}');
}

Example

See the example directory for a complete working example demonstrating:

• Repository initialization
• File staging and commits
• Branch management
• Merge operations
• Status checking

Run it with:

dart run example/git_demo.dart

Architecture

• Core: Repository management, object database, index, refs
• Models: Git objects (blob, tree, commit), authors, results
• Operations: Modular operations for each git command
• Remote: Remote repository management and network operations

For detailed implementation notes, see IMPLEMENTATION.md.

Testing

The package includes comprehensive test coverage:

dart test

• 12 local operation tests
• 31 remote operation tests
• Full workflow integration tests

Limitations

• Pack Protocol: Simplified implementation for basic push/pull operations (full git pack protocol in progress)
• Large Files: Optimized for mobile apps; no LFS support yet
• Advanced Features: Stash, cherry-pick, interactive rebase, and submodules not yet implemented

Recent Updates

v0.1.1

• ✅ Full SSH Support: Push and pull operations now work with SSH authentication via dartssh2 package
• ✅ Supports both git@host:path and ssh://user@host/path URL formats
• ✅ SSH key-based authentication with optional passphrase support

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT License - see LICENSE file for details.