912 lines
22 KiB
C#
912 lines
22 KiB
C#
// SparkleShare, an instant update workflow to Git.
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// Copyright (C) 2010 Hylke Bons <hylkebons@gmail.com>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using Mono.Unix;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Text.RegularExpressions;
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using System.Timers;
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namespace SparkleLib {
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public class SparkleRepo {
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private Process Process;
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private Timer RemoteTimer;
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private Timer LocalTimer;
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private FileSystemWatcher Watcher;
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private bool HasChanged;
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private DateTime LastChange;
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private System.Object ChangeLock = new System.Object();
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private bool HasUnsyncedChanges;
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public string Name;
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public string Domain;
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public string Description;
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public string LocalPath;
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public string RemoteOriginUrl;
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public string CurrentHash;
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public string UserEmail;
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public string UserName;
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public bool IsSyncing;
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public bool IsBuffering;
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public delegate void AddedEventHandler (object o, SparkleEventArgs args);
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public delegate void CommitedEventHandler (object o, SparkleEventArgs args);
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public delegate void PushingStartedEventHandler (object o, SparkleEventArgs args);
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public delegate void PushingFinishedEventHandler (object o, SparkleEventArgs args);
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public delegate void PushingFailedEventHandler (object o, SparkleEventArgs args);
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public delegate void FetchingStartedEventHandler (object o, SparkleEventArgs args);
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public delegate void FetchingFinishedEventHandler (object o, SparkleEventArgs args);
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public delegate void NewCommitEventHandler (object o, NewCommitArgs args);
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public delegate void ConflictDetectedEventHandler (object o, SparkleEventArgs args);
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public delegate void ChangesDetectedEventHandler (object o, SparkleEventArgs args);
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public delegate void CommitEndedUpEmptyEventHandler (object o, SparkleEventArgs args);
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public event AddedEventHandler Added;
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public event CommitedEventHandler Commited;
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public event PushingStartedEventHandler PushingStarted;
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public event PushingFinishedEventHandler PushingFinished;
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public event PushingFailedEventHandler PushingFailed;
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public event FetchingStartedEventHandler FetchingStarted;
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public event FetchingFinishedEventHandler FetchingFinished;
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public event NewCommitEventHandler NewCommit;
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public event ConflictDetectedEventHandler ConflictDetected;
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public event ChangesDetectedEventHandler ChangesDetected;
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public event CommitEndedUpEmptyEventHandler CommitEndedUpEmpty;
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public SparkleRepo (string path)
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{
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if (!Directory.Exists (path))
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Directory.CreateDirectory (path);
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LocalPath = path;
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Name = Path.GetFileName (LocalPath);
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Process = new Process () {
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EnableRaisingEvents = true
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};
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Process.StartInfo.FileName = "git";
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Process.StartInfo.RedirectStandardOutput = true;
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Process.StartInfo.UseShellExecute = false;
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Process.StartInfo.WorkingDirectory = LocalPath;
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UserName = GetUserName ();
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UserEmail = GetUserEmail ();
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RemoteOriginUrl = GetRemoteOriginUrl ();
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CurrentHash = GetCurrentHash ();
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Domain = GetDomain (RemoteOriginUrl);
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Description = GetDescription ();
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HasUnsyncedChanges = false;
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IsSyncing = false;
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IsBuffering = false;
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if (CurrentHash == null)
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CreateInitialCommit ();
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HasChanged = false;
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// Watch the repository's folder
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Watcher = new FileSystemWatcher (LocalPath) {
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IncludeSubdirectories = true,
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EnableRaisingEvents = true,
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Filter = "*"
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};
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Watcher.Changed += new FileSystemEventHandler (OnFileActivity);
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Watcher.Created += new FileSystemEventHandler (OnFileActivity);
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Watcher.Deleted += new FileSystemEventHandler (OnFileActivity);
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Watcher.Renamed += new RenamedEventHandler (OnFileActivity);
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// Fetch remote changes every minute
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RemoteTimer = new Timer () {
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Interval = 60000
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};
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RemoteTimer.Elapsed += delegate {
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CheckForRemoteChanges ();
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if (HasUnsyncedChanges)
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Push ();
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};
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// Keep a Local that checks if there are changes and
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// whether they have settled
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LocalTimer = new Timer () {
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Interval = 4000
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};
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LocalTimer.Elapsed += delegate (object o, ElapsedEventArgs args) {
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CheckForChanges ();
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};
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RemoteTimer.Start ();
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LocalTimer.Start ();
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// Add everything that changed
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// since SparkleShare was stopped
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AddCommitAndPush ();
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if (CurrentHash == null)
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CurrentHash = GetCurrentHash ();
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Idling...");
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}
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private void CheckForRemoteChanges ()
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{
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Checking for remote changes...");
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Process process = new Process () {
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EnableRaisingEvents = true
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};
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process.StartInfo.FileName = "git";
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process.StartInfo.RedirectStandardOutput = true;
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process.StartInfo.UseShellExecute = false;
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process.StartInfo.WorkingDirectory = LocalPath;
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process.StartInfo.Arguments = "ls-remote origin master";
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process.Start ();
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process.Exited += delegate {
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if (process.ExitCode != 0)
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return;
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string remote_hash = process.StandardOutput.ReadToEnd ();
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if (!remote_hash.StartsWith (CurrentHash)) {
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Remote changes found.");
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Fetch ();
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}
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};
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}
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private void CheckForChanges ()
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{
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lock (ChangeLock) {
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if (HasChanged) {
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SparkleHelpers.DebugInfo ("Local", "[" + Name + "] Changes found, checking if settled.");
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DateTime now = DateTime.UtcNow;
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TimeSpan changed = new TimeSpan (now.Ticks - LastChange.Ticks);
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if (changed.TotalMilliseconds > 5000) {
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SparkleHelpers.DebugInfo ("Local", "[" + Name + "] Changes have settled, adding files...");
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IsBuffering = false;
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HasChanged = false;
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AddCommitAndPush ();
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}
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}
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}
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}
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// Starts a timerwhen something changes
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private void OnFileActivity (object o, FileSystemEventArgs fse_args)
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{
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WatcherChangeTypes wct = fse_args.ChangeType;
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if (!ShouldIgnore (fse_args.FullPath)) {
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IsBuffering = true;
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// Only fire the event if the timer has been stopped.
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// This prevents multiple events from being raised whilst "buffering".
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if (!HasChanged) {
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SparkleEventArgs args = new SparkleEventArgs ("ChangesDetected");
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if (ChangesDetected != null)
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ChangesDetected (this, args);
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}
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SparkleHelpers.DebugInfo ("Event", "[" + Name + "] " + wct.ToString () + " '" + fse_args.Name + "'");
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RemoteTimer.Stop ();
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lock (ChangeLock) {
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LastChange = DateTime.UtcNow;
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HasChanged = true;
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}
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}
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}
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// When there are changes we generally want to Add, Commit and Push,
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// so this method does them all with appropriate timers, etc. switched off
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public void AddCommitAndPush ()
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{
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try {
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LocalTimer.Stop ();
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RemoteTimer.Stop ();
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Add ();
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string message = FormatCommitMessage ();
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if (message != null) {
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Commit (message);
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CheckForRemoteChanges ();
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Push ();
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} else {
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SparkleEventArgs args = new SparkleEventArgs ("CommitEndedUpEmpty");
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if (CommitEndedUpEmpty != null)
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CommitEndedUpEmpty (this, args);
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}
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} finally {
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RemoteTimer.Start ();
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LocalTimer.Start ();
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}
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}
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// Stages the made changes
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private void Add ()
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{
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Staging changes...");
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Process.StartInfo.Arguments = "add --all";
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Process.Start ();
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Process.WaitForExit ();
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Changes staged.");
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SparkleEventArgs args = new SparkleEventArgs ("Added");
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if (Added != null)
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Added (this, args);
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}
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// Commits the made changes
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public void Commit (string message)
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{
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Process.StartInfo.Arguments = "status --porcelain";
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Process.Start ();
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Process.WaitForExit ();
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if (Process.StandardOutput.ReadToEnd ().TrimEnd ("\n".ToCharArray ()).Equals (""))
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return;
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SparkleHelpers.DebugInfo ("Commit", "[" + Name + "] " + message);
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Process.StartInfo.Arguments = "commit -m \"" + message + "\"";
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Process.Start ();
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Process.WaitForExit ();
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SparkleEventArgs args = new SparkleEventArgs ("Commited");
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args.Message = message;
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if (Commited != null)
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Commited (this, args);
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}
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// Fetches changes from the remote repository
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public void Fetch ()
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{
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IsSyncing = true;
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RemoteTimer.Stop ();
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Process process = new Process () {
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EnableRaisingEvents = true
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};
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process.StartInfo.FileName = "git";
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process.StartInfo.RedirectStandardOutput = true;
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process.StartInfo.UseShellExecute = false;
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process.StartInfo.WorkingDirectory = LocalPath;
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SparkleEventArgs args;
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args = new SparkleEventArgs ("FetchingStarted");
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if (FetchingStarted != null)
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FetchingStarted (this, args);
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Fetching changes...");
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process.StartInfo.Arguments = "fetch -v origin master";
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process.Start ();
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process.WaitForExit ();
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process.Exited += delegate {
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Changes fetched.");
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args = new SparkleEventArgs ("FetchingFinished");
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IsSyncing = false;
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if (FetchingFinished != null)
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FetchingFinished (this, args);
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Rebase ();
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RemoteTimer.Start ();
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CurrentHash = GetCurrentHash ();
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};
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}
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// Merges the fetched changes
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public void Rebase ()
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{
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Add ();
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Watcher.EnableRaisingEvents = false;
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Rebasing changes...");
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Process.StartInfo.Arguments = "rebase -v FETCH_HEAD";
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Process.WaitForExit ();
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Process.Start ();
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Changes rebased.");
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string output = Process.StandardOutput.ReadToEnd ().Trim ();
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if (!output.Contains ("up to date")) {
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if (output.Contains ("Failed to merge")) {
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Resolving conflict...");
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Process.StartInfo.Arguments = "status";
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Process.WaitForExit ();
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Process.Start ();
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output = Process.StandardOutput.ReadToEnd ().Trim ();
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string [] lines = Regex.Split (output, "\n");
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foreach (string line in lines) {
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if (line.Contains ("needs merge")) {
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string problem_file_name = line.Substring (line.IndexOf (": needs merge"));
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Process.StartInfo.Arguments = "checkout --ours " + problem_file_name;
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Process.WaitForExit ();
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Process.Start ();
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string timestamp = DateTime.Now.ToString ("H:mm d MMM yyyy");
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File.Move (problem_file_name, problem_file_name + " (" + UserName + ", " + timestamp + ")");
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Process.StartInfo.Arguments = "checkout --theirs " + problem_file_name;
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Process.WaitForExit ();
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Process.Start ();
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SparkleEventArgs args = new SparkleEventArgs ("ConflictDetected");
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if (ConflictDetected != null)
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ConflictDetected (this, args);
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}
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}
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Add ();
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Process.StartInfo.Arguments = "rebase --continue";
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Process.WaitForExit ();
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Process.Start ();
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Conflict resolved.");
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Push ();
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}
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// Get the last commiter
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Process.StartInfo.Arguments = "log --format=\"%an\" -1";
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Process.Start ();
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string author = Process.StandardOutput.ReadToEnd ().Trim ();
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// Get the last committer e-mail
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Process.StartInfo.Arguments = "log --format=\"%ae\" -1";
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Process.Start ();
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string email = Process.StandardOutput.ReadToEnd ().Trim ();
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// Get the last commit message
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Process.StartInfo.Arguments = "log --format=\"%s\" -1";
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Process.Start ();
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string message = Process.StandardOutput.ReadToEnd ().Trim ();
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NewCommitArgs new_commit_args = new NewCommitArgs (author, email, message, Name);
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if (NewCommit != null)
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NewCommit (this, new_commit_args);
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}
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Watcher.EnableRaisingEvents = true;
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Idling...");
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}
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// Pushes the changes to the remote repo
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public void Push ()
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{
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IsSyncing = true;
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SparkleEventArgs args = new SparkleEventArgs ("PushingStarted");
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if (PushingStarted != null)
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PushingStarted (this, args);
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Pushing changes...");
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Process.StartInfo.Arguments = "push origin master";
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Process.Start ();
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Process.WaitForExit ();
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Process.Exited += delegate {
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if (Process.ExitCode != 0) {
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Pushing failed.");
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HasUnsyncedChanges = true;
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args = new SparkleEventArgs ("PushingFailed");
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if (PushingFailed != null)
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PushingFailed (this, args);
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} else {
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SparkleHelpers.DebugInfo ("Git", "[" + Name + "] Changes pushed.");
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args = new SparkleEventArgs ("PushingFinished");
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HasUnsyncedChanges = false;
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if (PushingFinished != null)
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PushingFinished (this, args);
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}
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IsSyncing = false;
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};
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}
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public void Stop ()
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{
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RemoteTimer.Stop ();
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LocalTimer.Stop ();
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}
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// Ignores repos, dotfiles, swap files and the like
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private bool ShouldIgnore (string file_path)
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{
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if (file_path.EndsWith (".lock") ||
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file_path.EndsWith ("~") ||
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file_path.Contains (".git") ||
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file_path.Contains ("/.") ||
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file_path.EndsWith (".swp") ||
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Directory.Exists (LocalPath + file_path)) {
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return true; // Yes, ignore it
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} else {
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return false;
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}
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}
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// Gets the domain name of a given URL
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public string GetDomain (string url)
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{
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if (RemoteOriginUrl.Equals (""))
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return "";
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string domain = url.Substring (RemoteOriginUrl.IndexOf ("@") + 1);
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if (domain.IndexOf (":") > -1)
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domain = domain.Substring (0, domain.IndexOf (":"));
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else
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domain = domain.Substring (0, domain.IndexOf ("/"));
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return domain;
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}
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// Gets the repository's description
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public string GetDescription ()
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{
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string description_file_path = SparkleHelpers.CombineMore (LocalPath, ".git", "description");
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if (!File.Exists (description_file_path))
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return null;
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StreamReader reader = new StreamReader (description_file_path);
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string description = reader.ReadToEnd ();
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reader.Close ();
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if (description.StartsWith ("Unnamed"))
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description = null;
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return description;
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}
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// Gets hash of the current commit
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public string GetCurrentHash ()
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{
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Process process = new Process () {
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EnableRaisingEvents = true
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};
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process.StartInfo.RedirectStandardOutput = true;
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process.StartInfo.UseShellExecute = false;
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process.StartInfo.FileName = "git";
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process.StartInfo.WorkingDirectory = LocalPath;
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process.StartInfo.Arguments = "rev-list --max-count=1 HEAD";
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process.Start ();
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process.WaitForExit ();
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string current_hash = process.StandardOutput.ReadToEnd ().Trim ();
|
||
|
||
if (process.ExitCode != 0)
|
||
return null;
|
||
else
|
||
return current_hash;
|
||
|
||
}
|
||
|
||
|
||
// Gets the user's name, example: "User Name"
|
||
public string GetUserName ()
|
||
{
|
||
|
||
string user_name;
|
||
|
||
Process process = new Process ();
|
||
process.StartInfo.RedirectStandardOutput = true;
|
||
process.StartInfo.UseShellExecute = false;
|
||
process.StartInfo.FileName = "git";
|
||
process.StartInfo.WorkingDirectory = LocalPath;
|
||
process.StartInfo.Arguments = "config --get user.name";
|
||
process.Start ();
|
||
|
||
user_name = process.StandardOutput.ReadToEnd ().Trim ();
|
||
|
||
if (user_name.Equals ("")) {
|
||
|
||
UnixUserInfo unix_user_info = new UnixUserInfo (UnixEnvironment.UserName);
|
||
|
||
if (unix_user_info.RealName.Equals (""))
|
||
user_name = "Mysterious Stranger";
|
||
else
|
||
user_name = unix_user_info.RealName;
|
||
|
||
}
|
||
|
||
return user_name;
|
||
|
||
}
|
||
|
||
|
||
// Gets the user's email, example: "person@gnome.org"
|
||
public string GetUserEmail ()
|
||
{
|
||
|
||
string user_email;
|
||
|
||
Process process = new Process ();
|
||
process.StartInfo.UseShellExecute = false;
|
||
process.StartInfo.RedirectStandardOutput = true;
|
||
process.StartInfo.FileName = "git";
|
||
process.StartInfo.WorkingDirectory = LocalPath;
|
||
process.StartInfo.Arguments = "config --get user.email";
|
||
process.Start ();
|
||
|
||
user_email = process.StandardOutput.ReadToEnd ().Trim ();
|
||
|
||
if (user_email.Equals (""))
|
||
user_email = "Unknown Email";
|
||
|
||
return user_email;
|
||
|
||
}
|
||
|
||
|
||
// Create a first commit in case the user has cloned
|
||
// an empty repository
|
||
private void CreateInitialCommit ()
|
||
{
|
||
|
||
TextWriter writer = new StreamWriter (Path.Combine (LocalPath, "SparkleShare.txt"));
|
||
writer.WriteLine (":)");
|
||
writer.Close ();
|
||
|
||
}
|
||
|
||
|
||
// Gets the url of the remote repo, example: "ssh://git@git.gnome.org/project"
|
||
public string GetRemoteOriginUrl ()
|
||
{
|
||
|
||
string remote_origin_url;
|
||
|
||
Process process = new Process ();
|
||
process.StartInfo.UseShellExecute = false;
|
||
process.StartInfo.RedirectStandardOutput = true;
|
||
process.StartInfo.FileName = "git";
|
||
process.StartInfo.WorkingDirectory = LocalPath;
|
||
process.StartInfo.Arguments = "config --get remote.origin.url";
|
||
process.Start ();
|
||
|
||
remote_origin_url = process.StandardOutput.ReadToEnd ().Trim ();
|
||
|
||
return remote_origin_url;
|
||
|
||
}
|
||
|
||
|
||
// Returns a list of latest commits
|
||
public List <SparkleCommit> GetCommits (int count)
|
||
{
|
||
|
||
if (count < 0)
|
||
return null;
|
||
|
||
List <SparkleCommit> commits = new List <SparkleCommit> ();
|
||
|
||
Process process = new Process () {
|
||
EnableRaisingEvents = true
|
||
};
|
||
|
||
process.StartInfo.RedirectStandardOutput = true;
|
||
process.StartInfo.UseShellExecute = false;
|
||
process.StartInfo.WorkingDirectory = LocalPath;
|
||
|
||
// Get the user's timezone
|
||
process.StartInfo.FileName = "date";
|
||
process.StartInfo.Arguments = "+%z";
|
||
|
||
|
||
process.Start ();
|
||
process.WaitForExit ();
|
||
|
||
string timezone = process.StandardOutput.ReadToEnd ().Trim ();
|
||
int unix_timestamp = 0;
|
||
|
||
// Add the timezone difference in hours when in a positive timezone
|
||
if (timezone.StartsWith ("+"))
|
||
unix_timestamp = 3600 * int.Parse (timezone.Substring (1, 2));
|
||
|
||
// Remove the timezone difference in hours when in a negative timezone
|
||
if (timezone.StartsWith ("-"))
|
||
unix_timestamp = -3600 * int.Parse (timezone.Substring (1, 2));
|
||
|
||
process.StartInfo.FileName = "git";
|
||
process.StartInfo.Arguments = "log --format=\"%at\t%an\t%ae\t%H\" -" + count;
|
||
|
||
process.Start ();
|
||
process.WaitForExit ();
|
||
|
||
string output = process.StandardOutput.ReadToEnd ().Trim ();
|
||
output = output.TrimStart ("\n".ToCharArray ());
|
||
|
||
string [] lines = Regex.Split (output, "\n");
|
||
|
||
Array.Sort (lines);
|
||
Array.Reverse (lines);
|
||
|
||
foreach (string line in lines) {
|
||
|
||
string [] parts = Regex.Split (line, "\t");
|
||
|
||
int local_timestamp = unix_timestamp + int.Parse (parts [0]);
|
||
string user_name = parts [1];
|
||
string user_email = parts [2];
|
||
string hash = parts [3];
|
||
|
||
DateTime date_time = SparkleHelpers.UnixTimestampToDateTime (local_timestamp);
|
||
|
||
SparkleCommit commit = new SparkleCommit (user_name, user_email, date_time, hash);
|
||
|
||
// Find out what has changed in the commit.
|
||
// --name-status lists affected files with the modification type,
|
||
// -C detects renames
|
||
process.StartInfo.Arguments = "show " + hash + " --name-status -C";
|
||
process.Start ();
|
||
process.WaitForExit ();
|
||
|
||
output = process.StandardOutput.ReadToEnd ().Trim ();
|
||
output = output.TrimStart ("\n".ToCharArray ());
|
||
|
||
string [] file_lines = Regex.Split (output, "\n");
|
||
|
||
foreach (string file_line in file_lines) {
|
||
|
||
string file_path = "";
|
||
|
||
if (file_line.Length > 1)
|
||
file_path = file_line.Substring (2);
|
||
|
||
if (file_line.StartsWith ("M\t"))
|
||
commit.Edited.Add (file_path);
|
||
|
||
if (file_line.StartsWith ("A\t"))
|
||
commit.Added.Add (file_path);
|
||
|
||
if (file_line.StartsWith ("D\t"))
|
||
commit.Deleted.Add (file_path);
|
||
|
||
if (file_line.StartsWith ("R")) {
|
||
|
||
file_path = file_line.Substring (5);
|
||
string [] paths = Regex.Split (file_path, "\t");
|
||
|
||
commit.MovedFrom.Add (paths [0]);
|
||
commit.MovedTo.Add (paths [1]);
|
||
|
||
}
|
||
|
||
}
|
||
|
||
commits.Add (commit);
|
||
|
||
unix_timestamp = 0;
|
||
|
||
}
|
||
|
||
return commits;
|
||
|
||
}
|
||
|
||
|
||
// Creates a pretty commit message based on what has changed
|
||
private string FormatCommitMessage ()
|
||
{
|
||
|
||
Process.StartInfo.Arguments = "status --porcelain";
|
||
Process.Start ();
|
||
|
||
string output = Process.StandardOutput.ReadToEnd ().TrimEnd ();
|
||
string [] lines = Regex.Split (output, "\n");
|
||
|
||
string file_name;
|
||
string file_action;
|
||
string message = null;
|
||
|
||
foreach (string line in lines) {
|
||
|
||
if (line.StartsWith ("A")) {
|
||
|
||
file_action = "added";
|
||
file_name = line.Substring (3);
|
||
message = file_action + " ‘" + file_name + "’";
|
||
|
||
}
|
||
|
||
if (line.StartsWith ("M")) {
|
||
|
||
file_action = "edited";
|
||
file_name = line.Substring (3);
|
||
message = file_action + " ‘" + file_name + "’";
|
||
|
||
}
|
||
|
||
if (line.StartsWith ("D")) {
|
||
|
||
file_action = "deleted";
|
||
file_name = line.Substring (3);
|
||
message = file_action + " ‘" + file_name + "’";
|
||
|
||
}
|
||
|
||
if (line.StartsWith ("R")) {
|
||
|
||
file_action = "moved";
|
||
message = file_action + " ‘" + line.Substring (3).Replace (" -> ", "’ to\n‘") + "’";
|
||
|
||
}
|
||
|
||
if (line.StartsWith ("C")) {
|
||
|
||
file_action = "copied";
|
||
file_name = line.Substring (3);
|
||
|
||
}
|
||
|
||
}
|
||
|
||
if (lines.Length > 1)
|
||
message += " and " + (lines.Length - 1) + " more";
|
||
|
||
return message;
|
||
|
||
}
|
||
|
||
}
|
||
|
||
}
|