550 lines
26 KiB
C#
550 lines
26 KiB
C#
// GitAutoSync.cs - part of the Git Auto Sync package (net.lenrui.git-auto-sync).
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//
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// When Unity opens: fetches, and if the branch's upstream has new commits, updates to them.
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// Unpushed local commits are rebased on top; uncommitted files are stashed and restored.
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// When Unity closes: saves scenes/assets, commits everything under the project folder,
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// brings in anything pushed meanwhile, then pushes.
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// If anything fails you can stay open or quit anyway; your work is always committed locally first.
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//
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// Menu: Tools > Git Auto Sync (on/off, ask-before-commit, and manual Pull / Commit and Push)
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//
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// If an HTTPS push is rejected as too large (HTTP 413, such as Cloudflare's 100 MB upload limit), the push is
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// retried over SSH, which can be on a different host. Set it up in Project Settings > Git Auto Sync.
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using UnityEditor;
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using UnityEditor.SceneManagement;
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using UnityEngine;
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using Debug = UnityEngine.Debug;
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namespace Lenrui.GitSync
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{
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[InitializeOnLoad]
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public static class GitAutoSync
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{
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const string Title = "Git Auto Sync";
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const string MenuRoot = "Tools/Git Auto Sync/";
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const string StartupDoneKey = "GitAutoSync.StartupDone";
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static readonly string ProjectRoot = Path.GetFullPath(Path.Combine(Application.dataPath, ".."));
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static bool busy;
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// ---------------------------------------------------------------- settings (per project, per machine)
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static string Key(string name) { return "GitAutoSync." + name + "." + ProjectRoot; }
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static bool Enabled
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{
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get { return EditorPrefs.GetBool(Key("Enabled"), true); }
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set { EditorPrefs.SetBool(Key("Enabled"), value); }
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}
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static bool AskBeforeCommit
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{
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get { return EditorPrefs.GetBool(Key("AskBeforeCommit"), true); }
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set { EditorPrefs.SetBool(Key("AskBeforeCommit"), value); }
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}
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// ---------------------------------------------------------------- hooks
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static GitAutoSync()
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{
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if (Application.isBatchMode) return;
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EditorApplication.wantsToQuit -= OnWantsToQuit;
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EditorApplication.wantsToQuit += OnWantsToQuit;
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// Static constructors re-run on every script reload; only pull once per editor launch.
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if (SessionState.GetBool(StartupDoneKey, false)) return;
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SessionState.SetBool(StartupDoneKey, true);
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EditorApplication.delayCall += () => { if (Enabled) Guarded(() => PullLatest(false)); };
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}
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static bool OnWantsToQuit()
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{
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if (!Enabled || busy) return true;
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bool quit = true;
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Guarded(() => quit = CommitAndPush(true), onError: () =>
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quit = EditorUtility.DisplayDialog(Title, "Unexpected error while syncing; see the Console.", "Quit Anyway", "Stay Open"));
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return quit;
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}
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static void Guarded(Action action, Action onError = null)
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{
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busy = true;
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try { action(); }
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catch (Exception e) { Debug.LogException(e); if (onError != null) onError(); }
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finally { busy = false; EditorUtility.ClearProgressBar(); }
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}
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// ---------------------------------------------------------------- menu
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[MenuItem(MenuRoot + "Enabled", false, 0)]
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static void ToggleEnabled() { Enabled = !Enabled; }
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[MenuItem(MenuRoot + "Enabled", true)]
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static bool ToggleEnabledCheck() { Menu.SetChecked(MenuRoot + "Enabled", Enabled); return true; }
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[MenuItem(MenuRoot + "Ask Before Committing on Close", false, 1)]
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static void ToggleAsk() { AskBeforeCommit = !AskBeforeCommit; }
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[MenuItem(MenuRoot + "Ask Before Committing on Close", true)]
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static bool ToggleAskCheck() { Menu.SetChecked(MenuRoot + "Ask Before Committing on Close", AskBeforeCommit); return true; }
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[MenuItem(MenuRoot + "Pull Latest Now", false, 20)]
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static void PullNow() { Guarded(() => PullLatest(true)); }
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[MenuItem(MenuRoot + "Commit and Push Now", false, 21)]
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static void PushNow() { Guarded(() => CommitAndPush(false)); }
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[MenuItem(MenuRoot + "Settings...", false, 40)]
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static void OpenSettings() { SettingsService.OpenProjectSettings(GitAutoSyncSettingsProvider.SettingsPath); }
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// ---------------------------------------------------------------- open: fetch + update
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static void PullLatest(bool manual)
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{
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string why;
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if (!CheckRepo(out why)) { Info(why, manual); return; }
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string branch = CurrentBranch();
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if (branch == null) { Info("HEAD is detached (not on a branch), so nothing was pulled.", manual); return; }
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if (manual) AssetDatabase.SaveAssets();
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var fetch = Git("fetch --prune", "Checking for remote changes...", 120);
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if (!fetch.Ok) { Warn("Couldn't fetch (offline?). Working with the local copy.\n\n" + fetch.Tail, manual); return; }
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if (!HasUpstream(branch)) { Info("'" + branch + "' has no upstream yet, so there's nothing to pull. It will be pushed when you close Unity.", manual); return; }
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int ahead, behind;
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AheadBehind(out ahead, out behind);
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if (behind == 0) { Info("'" + branch + "' is up to date.", manual); return; }
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// Uncommitted edits to files that also changed remotely would end up full of conflict markers,
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// which breaks Unity assets. Leave them alone; they get committed on close and any clash is reported then.
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var remoteChanged = Lines(Git("diff --name-only HEAD...@{u}").Out);
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var localDirty = Lines(Git("diff --name-only HEAD").Out)
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.Concat(Lines(Git("ls-files --others --exclude-standard --full-name").Out));
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string[] overlap = localDirty.Intersect(remoteChanged).ToArray();
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if (overlap.Length > 0)
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{
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Alert("Didn't pull " + behind + " new commit(s) on '" + branch + "': you have uncommitted edits to files that were also changed remotely:\n\n" +
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Clip(string.Join("\n", overlap), 10) + "\n\nThey'll be committed when you close Unity, and you'll be told if they conflict.");
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return;
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}
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string incoming = Git("log --oneline --no-decorate HEAD..@{u}").Out.Trim();
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int stashesBefore = StashCount();
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var rebase = Git("rebase --autostash @{u}", "Pulling " + behind + " new commit(s)...", 300);
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if (!rebase.Ok)
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{
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Git("rebase --abort");
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Alert("Couldn't update '" + branch + "': your " + ahead + " unpushed commit(s) conflict with the " + behind +
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" new remote commit(s). Your files were left as they were; resolve it in your git client.\n\n" + rebase.Tail);
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return;
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}
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AssetDatabase.Refresh();
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Debug.Log("[GitAutoSync] Pulled " + behind + " commit(s) into '" + branch + "':\n" + incoming);
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if (StashCount() > stashesBefore)
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Alert("Pulled the latest changes, but your uncommitted edits clashed with them. Check for conflict markers; " +
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"a copy of your edits is saved in `git stash`.");
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else if (manual)
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EditorUtility.DisplayDialog(Title, "Pulled " + behind + " commit(s):\n\n" + Clip(incoming, 15), "OK");
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}
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// ---------------------------------------------------------------- close: commit + push
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// Returns true if it's OK to quit (when quitting).
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static bool CommitAndPush(bool quitting)
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{
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string why;
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if (!CheckRepo(out why)) { Info(why, !quitting); return true; }
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// Make what's on disk match the editor.
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if (!EditorSceneManager.SaveCurrentModifiedScenesIfUserWantsTo()) return false; // user hit Cancel
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AssetDatabase.SaveAssets();
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// Never commit Unity's cache.
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if (Git("check-ignore -q Library/").Code != 0)
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return Fail("Library/ isn't in .gitignore, so auto-commit is off to avoid committing gigabytes of cache. " +
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"Add a Unity .gitignore to the repo.", quitting);
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string branch = CurrentBranch();
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if (branch == null) return Fail("HEAD is detached (not on a branch), so nothing was committed or pushed.", quitting);
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// ---- commit
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string[] pending = Lines(Git("status --porcelain -- .").Out);
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if (pending.Length > 0)
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{
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if (quitting && AskBeforeCommit)
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{
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int choice = EditorUtility.DisplayDialogComplex(Title,
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"Commit and push " + pending.Length + " change(s) on '" + branch + "'?\n\n" + Clip(string.Join("\n", pending), 15),
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"Commit and Push", "Stay Open", "Quit Without Committing");
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if (choice == 1) return false;
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if (choice == 2) return true;
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}
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var add = Git("add -A -- .", "Staging changes...", 300);
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if (!add.Ok) return Fail("git add failed:\n\n" + add.Tail, quitting);
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string[] staged = Lines(Git("diff --cached --name-status").Out);
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string message = "Auto-commit from Unity (" + Environment.MachineName + ", " + DateTime.Now.ToString("yyyy-MM-dd HH:mm") + ")\n\n" +
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Clip(string.Join("\n", staged), 100);
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string msgFile = Path.GetTempFileName();
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File.WriteAllText(msgFile, message, new UTF8Encoding(false));
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var commit = Git("commit -q -F \"" + msgFile + "\"", "Committing...", 300);
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File.Delete(msgFile);
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if (!commit.Ok) return Fail("Commit failed:\n\n" + commit.Tail, quitting);
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Debug.Log("[GitAutoSync] Committed " + staged.Length + " file(s) on '" + branch + "'.");
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}
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// ---- push
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bool hasUpstream = HasUpstream(branch);
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string remote = hasUpstream ? GitValue("config --get branch." + branch + ".remote") : DefaultRemote();
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if (remote == null) { Info("No git remote is set up, so changes were only committed locally.", !quitting); return true; }
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var fetch = Git("fetch --prune", "Checking for remote changes...", 120);
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if (!fetch.Ok)
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return Fail("Committed locally, but couldn't reach the remote, so nothing was pushed. " +
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"It will be pushed the next time you close Unity.\n\n" + fetch.Tail, quitting);
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GitResult push;
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string refspec;
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if (hasUpstream)
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{
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int ahead, behind;
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AheadBehind(out ahead, out behind);
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if (behind > 0)
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{
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var rebase = Git("rebase --autostash @{u}", "Bringing in " + behind + " remote commit(s)...", 300);
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if (!rebase.Ok)
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{
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Git("rebase --abort");
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return Fail("New commits on the remote conflict with yours. Your work is committed locally but not pushed; " +
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"resolve it in your git client, then push.\n\n" + rebase.Tail, quitting);
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}
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AheadBehind(out ahead, out behind);
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}
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if (ahead == 0) { Info("'" + branch + "' is already in sync.", !quitting); return true; }
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string mergeRef = GitValue("config --get branch." + branch + ".merge");
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refspec = "HEAD:" + mergeRef;
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push = Git("push " + remote + " " + refspec, "Pushing " + ahead + " commit(s)...", 900);
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}
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else
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{
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refspec = "HEAD:refs/heads/" + branch;
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push = Git("push -u " + remote + " HEAD", "Pushing new branch '" + branch + "'...", 900);
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}
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// Too big for the HTTPS front end (e.g. Cloudflare's 100 MB request limit): send the same push over SSH.
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string pushedTo = remote;
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if (!push.Ok && TooLargeForHttp(push))
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{
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var settings = GitAutoSyncSettings.Load();
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if (!settings.sshFallback)
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return Fail("Committed locally, but the server rejected the push as too large (HTTP 413). Turn on the SSH fallback in " +
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"Project Settings > Git Auto Sync, or push it over SSH yourself.\n\n" + push.Tail, quitting);
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string sshWhy;
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string sshUrl = ResolveSshUrl(settings, RemoteUrl(remote), out sshWhy);
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if (sshUrl == null)
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return Fail("Committed locally, but the server rejected the push as too large (HTTP 413), and " + sshWhy, quitting);
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Debug.Log("[GitAutoSync] HTTPS push was rejected as too large (HTTP 413); retrying over SSH: " + sshUrl);
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push = Git("push " + Quote(sshUrl) + " " + refspec, "Too large for HTTPS, pushing over SSH...", 1800, batchSsh: true);
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if (!push.Ok)
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return Fail("Committed locally. The push was too large for HTTPS (HTTP 413), and pushing over SSH to " + sshUrl +
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" failed too. " + SshHint(push, sshUrl) + "It will be retried the next time you close Unity.\n\n" + push.Tail, quitting);
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// Pushing to a URL doesn't move origin/<branch>, so fetch to bring the remote-tracking branch up to date.
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Git("fetch " + remote, "Updating " + remote + "...", 120);
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if (!hasUpstream) Git("branch --set-upstream-to=" + remote + "/" + branch);
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pushedTo = remote + " over SSH (" + sshUrl + ")";
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}
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if (!push.Ok)
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return Fail("Committed locally, but the push failed. It will be retried the next time you close Unity.\n\n" + push.Tail, quitting);
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Info("Pushed '" + branch + "' to " + pushedTo + ".", !quitting);
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if (!quitting) AssetDatabase.Refresh();
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return true;
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}
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// ---------------------------------------------------------------- git helpers
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static bool CheckRepo(out string why)
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{
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var r = Git("rev-parse --is-inside-work-tree");
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why = null;
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if (r.Code == -1) why = r.Err;
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else if (!r.Ok || r.Out.Trim() != "true") why = "This project isn't inside a git repository, so Git Auto Sync is idle.";
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return why == null;
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}
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static string CurrentBranch() { return GitValue("symbolic-ref --short -q HEAD"); }
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static bool HasUpstream(string branch)
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{
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return GitValue("config --get branch." + branch + ".merge") != null && Git("rev-parse -q --verify @{u}").Ok;
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}
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static string DefaultRemote()
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{
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string[] remotes = Lines(Git("remote").Out);
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if (remotes.Contains("origin")) return "origin";
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return remotes.Length > 0 ? remotes[0] : null;
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}
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static void AheadBehind(out int ahead, out int behind)
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{
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string[] parts = Git("rev-list --left-right --count HEAD...@{u}").Out.Split(new[] { '\t', ' ', '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
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ahead = parts.Length > 0 ? int.Parse(parts[0]) : 0;
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behind = parts.Length > 1 ? int.Parse(parts[1]) : 0;
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}
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static int StashCount() { return Lines(Git("stash list").Out).Length; }
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// ---------------------------------------------------------------- SSH fallback
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static bool TooLargeForHttp(GitResult r)
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{
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return Regex.IsMatch(r.Err + "\n" + r.Out, @"HTTP 413|error: 413|413 (Request Entity|Payload) Too Large", RegexOptions.IgnoreCase);
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}
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// The remote the current branch pushes to.
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internal static string PushRemote()
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{
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string branch = CurrentBranch();
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string remote = branch != null ? GitValue("config --get branch." + branch + ".remote") : null;
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return remote ?? DefaultRemote();
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}
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internal static string RemoteUrl(string remote)
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{
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return remote == null ? null : GitValue("remote get-url --push " + remote);
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}
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// https://git.example.com/owner/repo.git -> ssh://git@<SSH host>[:port]/owner/repo.git
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internal static string ResolveSshUrl(GitAutoSyncSettings s, string remoteUrl, out string why)
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{
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why = null;
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string full = (s.sshUrlOverride ?? "").Trim();
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if (full.Length > 0) return full;
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if (string.IsNullOrEmpty(remoteUrl)) { why = "there's no git remote set up."; return null; }
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Uri u;
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if (!Uri.TryCreate(remoteUrl, UriKind.Absolute, out u) || (u.Scheme != Uri.UriSchemeHttps && u.Scheme != Uri.UriSchemeHttp))
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{
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why = "the remote (" + Redact(remoteUrl) + ") isn't an HTTPS address, so there's no SSH address to work out from it. " +
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"Set a Full SSH URL in Project Settings > Git Auto Sync.";
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return null;
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}
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string host = (s.sshHost ?? "").Trim();
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string user = (s.sshUser ?? "").Trim();
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if (host.StartsWith("ssh://", StringComparison.OrdinalIgnoreCase)) host = host.Substring(6);
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host = host.TrimEnd('/');
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int at = host.LastIndexOf('@');
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if (at >= 0) { user = host.Substring(0, at); host = host.Substring(at + 1); }
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if (host.Length == 0) host = u.Host;
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if (user.Length == 0) user = "git";
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return "ssh://" + user + "@" + host + (s.sshPort > 0 && s.sshPort != 22 ? ":" + s.sshPort : "") + u.AbsolutePath;
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}
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// For the Test button in Project Settings.
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internal static void TestSshConnection(GitAutoSyncSettings s)
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{
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Guarded(() =>
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{
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string why;
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if (!CheckRepo(out why)) { Info(why, true); return; }
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string url = ResolveSshUrl(s, RemoteUrl(PushRemote()), out why);
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if (url == null) { Warn("Can't work out an SSH address: " + why, true); return; }
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var r = Git("ls-remote " + Quote(url) + " HEAD", "Connecting to " + url + "...", 60, batchSsh: true);
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if (r.Ok) Info("SSH works. Pushes too large for HTTPS will go to:\n\n" + url, true);
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else Warn("Couldn't reach " + url + " over SSH. " + SshHint(r, url) + "\n\n" + r.Tail, true);
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});
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}
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static string SshHint(GitResult r, string sshUrl)
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{
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string text = r.Err + "\n" + r.Out;
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if (text.Contains("Host key verification failed"))
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return "This computer doesn't trust the SSH server's host key yet: run `ssh -T " + SshTarget(sshUrl) +
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"` once in a terminal and answer yes. ";
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if (text.Contains("Permission denied"))
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return "The SSH key was refused, or it needs a passphrase: add this computer's public key to your account on the git server " +
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"and load the key into ssh-agent. ";
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if (Regex.IsMatch(text, "Could not resolve hostname|Connection refused|timed out|No route to host"))
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return "Couldn't connect to the SSH server; check the SSH host and port in Project Settings > Git Auto Sync. ";
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if (Regex.IsMatch(text, "does not appear to be a git repository|not found|Cannot find repository", RegexOptions.IgnoreCase))
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return "The SSH server has no repository at that path; check the SSH settings or set a Full SSH URL. ";
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return "";
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}
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// "-p 2222 git@host" for an ssh:// URL, "git@host" for git@host:owner/repo.git
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static string SshTarget(string sshUrl)
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{
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Uri u;
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if (Uri.TryCreate(sshUrl, UriKind.Absolute, out u) && u.Scheme == "ssh")
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return (u.Port > 0 && u.Port != 22 ? "-p " + u.Port + " " : "") + (u.UserInfo.Length > 0 ? u.UserInfo + "@" : "") + u.Host;
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int colon = sshUrl.IndexOf(':');
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return colon > 0 ? sshUrl.Substring(0, colon) : sshUrl;
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}
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static bool UserConfiguredSsh()
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{
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return !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("GIT_SSH_COMMAND")) ||
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!string.IsNullOrEmpty(Environment.GetEnvironmentVariable("GIT_SSH")) ||
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GitValue("config --get core.sshCommand") != null;
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}
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static string Redact(string url) { return Regex.Replace(url ?? "", "//[^/@]+@", "//"); } // drop user:token@
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static string Quote(string s) { return "\"" + s.Replace("\"", "\\\"") + "\""; }
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static string GitValue(string args)
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{
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var r = Git(args);
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string v = r.Out.Trim();
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return r.Ok && v.Length > 0 ? v : null;
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}
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internal struct GitResult
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{
|
|
public int Code;
|
|
public string Out, Err;
|
|
public bool Ok { get { return Code == 0; } }
|
|
public string Tail
|
|
{
|
|
get
|
|
{
|
|
var all = Lines((Err ?? "") + "\n" + (Out ?? ""))
|
|
.Where(l => !l.StartsWith("hint:") && !l.StartsWith("Rebasing (")).ToArray();
|
|
return string.Join("\n", all.Skip(Math.Max(0, all.Length - 12)).ToArray());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Runs git in the project folder. With a progress title it shows a cancelable progress bar.
|
|
static GitResult Git(string args, string progress = null, int timeoutSeconds = 30, bool batchSsh = false)
|
|
{
|
|
var psi = new ProcessStartInfo("git", args)
|
|
{
|
|
WorkingDirectory = ProjectRoot,
|
|
UseShellExecute = false,
|
|
RedirectStandardOutput = true,
|
|
RedirectStandardError = true,
|
|
CreateNoWindow = true,
|
|
StandardOutputEncoding = Encoding.UTF8,
|
|
StandardErrorEncoding = Encoding.UTF8,
|
|
};
|
|
psi.EnvironmentVariables["GIT_TERMINAL_PROMPT"] = "0"; // fail instead of waiting on an invisible password prompt
|
|
if (batchSsh && !UserConfiguredSsh())
|
|
psi.EnvironmentVariables["GIT_SSH_COMMAND"] = "ssh -o BatchMode=yes -o ConnectTimeout=20"; // same: no hidden SSH prompts
|
|
|
|
var output = new StringBuilder();
|
|
var errors = new StringBuilder();
|
|
using (var p = new Process { StartInfo = psi })
|
|
{
|
|
p.OutputDataReceived += (s, e) => { if (e.Data != null) lock (output) output.AppendLine(e.Data); };
|
|
p.ErrorDataReceived += (s, e) => { if (e.Data != null) lock (errors) errors.AppendLine(e.Data); };
|
|
|
|
try { p.Start(); }
|
|
catch (Exception e)
|
|
{
|
|
return new GitResult { Code = -1, Out = "", Err = "Couldn't run git (is it installed and on PATH?): " + e.Message };
|
|
}
|
|
p.BeginOutputReadLine();
|
|
p.BeginErrorReadLine();
|
|
|
|
var timer = Stopwatch.StartNew();
|
|
string abortReason = null;
|
|
while (!p.WaitForExit(100))
|
|
{
|
|
if (progress != null &&
|
|
EditorUtility.DisplayCancelableProgressBar(Title, progress + " (" + (int)timer.Elapsed.TotalSeconds + "s)",
|
|
(float)(timer.Elapsed.TotalSeconds % 4.0 / 4.0)))
|
|
abortReason = "Cancelled.";
|
|
else if (timer.Elapsed.TotalSeconds > timeoutSeconds)
|
|
abortReason = "Timed out after " + timeoutSeconds + "s.";
|
|
|
|
if (abortReason != null)
|
|
{
|
|
try { p.Kill(); } catch { }
|
|
break;
|
|
}
|
|
}
|
|
p.WaitForExit(); // flush async output
|
|
if (progress != null) EditorUtility.ClearProgressBar();
|
|
|
|
string err;
|
|
lock (errors) err = errors.ToString();
|
|
if (abortReason != null) err += "\n" + abortReason;
|
|
lock (output) return new GitResult { Code = abortReason != null ? -2 : p.ExitCode, Out = output.ToString(), Err = err };
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------- reporting
|
|
|
|
static void Info(string msg, bool showDialog)
|
|
{
|
|
Debug.Log("[GitAutoSync] " + msg);
|
|
if (showDialog) EditorUtility.DisplayDialog(Title, msg, "OK");
|
|
}
|
|
|
|
static void Warn(string msg, bool showDialog)
|
|
{
|
|
Debug.LogWarning("[GitAutoSync] " + msg);
|
|
if (showDialog) EditorUtility.DisplayDialog(Title, msg, "OK");
|
|
}
|
|
|
|
static void Alert(string msg) { Warn(msg, true); }
|
|
|
|
// When quitting: ask whether to quit anyway. Otherwise: just report. Returns true to quit.
|
|
static bool Fail(string msg, bool quitting)
|
|
{
|
|
Debug.LogWarning("[GitAutoSync] " + msg);
|
|
if (!quitting)
|
|
{
|
|
EditorUtility.DisplayDialog(Title, msg, "OK");
|
|
AssetDatabase.Refresh();
|
|
return false;
|
|
}
|
|
bool quit = EditorUtility.DisplayDialog(Title, msg, "Quit Anyway", "Stay Open");
|
|
if (!quit) AssetDatabase.Refresh(); // a partial sync may have changed files on disk
|
|
return quit;
|
|
}
|
|
|
|
static string[] Lines(string s)
|
|
{
|
|
return (s ?? "").Split(new[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
|
|
}
|
|
|
|
static string Clip(string text, int maxLines)
|
|
{
|
|
string[] lines = Lines(text);
|
|
if (lines.Length <= maxLines) return string.Join("\n", lines);
|
|
return string.Join("\n", lines.Take(maxLines).ToArray()) + "\n...and " + (lines.Length - maxLines) + " more";
|
|
}
|
|
}
|
|
}
|