Deduce primary branch name in merge script

Core/Net/NetFileCache.cs

@@ -25,7 +25,7 @@
     /// </summary>
 
     // We require fancy permissions to use the FileSystemWatcher
     [PermissionSet(SecurityAction.Demand, Name="FullTrust")]
     public class NetFileCache : IDisposable
     {
         private FileSystemWatcher watcher;
@@ -153,17 +153,13 @@
         }
 
         // returns true if a url is already in the cache
-        public bool IsCached(Uri url)
-        {
-            return GetCachedFilename(url) != null;
-        }
+        public bool IsCached(Uri url) => GetCachedFilename(url) != null;
 
         // returns true if a url is already in the cache
         // returns the filename in the outFilename parameter
         public bool IsCached(Uri url, out string outFilename)
         {
             outFilename = GetCachedFilename(url);
-
             return outFilename != null;
         }
 
@@ -172,10 +168,7 @@
         /// validation tests. Prefer this over IsCached when working with
         /// zip files.
         /// </summary>
-        public bool IsCachedZip(Uri url)
-        {
-            return GetCachedZip(url) != null;
-        }
+        public bool IsCachedZip(Uri url) => GetCachedZip(url) != null;
 
         /// <summary>
         /// Returns true if a file matching the given URL is cached, but makes no
@@ -184,9 +177,7 @@
         /// Use IsCachedZip() for a slower but more reliable method.
         /// </summary>
         public bool IsMaybeCachedZip(Uri url, DateTime? remoteTimestamp = null)
-        {
-            return GetCachedFilename(url, remoteTimestamp) != null;
-        }
+            => GetCachedFilename(url, remoteTimestamp) != null;
 
         /// <summary>>
         /// Returns the filename of an already cached url or null otherwise
@@ -337,14 +328,12 @@
         }
 
         private HashSet<string> legacyDirs()
-        {
-            return manager?.Instances.Values
+            => manager?.Instances.Values
                 .Where(ksp => ksp.Valid)
                 .Select(ksp => ksp.DownloadCacheDir())
                 .Where(dir => Directory.Exists(dir))
                 .ToHashSet()
                 ?? new HashSet<string>();
-        }
 
         public void EnforceSizeLimit(long bytes, Registry registry)
         {

Core/Net/NetModuleCache.cs

@@ -123,9 +123,7 @@ public string DescribeAvailability(CkanModule m)
         /// SHA1 hash, in all-caps hexadecimal format
         /// </returns>
         public string GetFileHashSha1(string filePath, IProgress<long> progress, CancellationToken cancelToken = default(CancellationToken))
-        {
-            return cache.GetFileHashSha1(filePath, progress, cancelToken);
-        }
+            => cache.GetFileHashSha1(filePath, progress, cancelToken);
 
         /// <summary>
         /// Calculate the SHA256 hash of a file
@@ -136,9 +134,7 @@ public string DescribeAvailability(CkanModule m)
         /// SHA256 hash, in all-caps hexadecimal format
         /// </returns>
         public string GetFileHashSha256(string filePath, IProgress<long> progress, CancellationToken cancelToken = default(CancellationToken))
-        {
-            return cache.GetFileHashSha256(filePath, progress, cancelToken);
-        }
+            => cache.GetFileHashSha256(filePath, progress, cancelToken);
 
         /// <summary>
         /// Try to add a file to the module cache.

Core/Registry/InstalledModule.cs

@@ -89,30 +89,15 @@ public class InstalledModule
         // registry format compatibility.
         [JsonProperty] private Dictionary<string, InstalledModuleFile> installed_files;
 
-        public IEnumerable<string> Files
-        {
-            get { return installed_files.Keys; }
-        }
-
-        public string identifier
-        {
-            get { return source_module.identifier; }
-        }
-
-        public CkanModule Module
-        {
-            get { return source_module; }
-        }
-
-        public DateTime InstallTime
-        {
-            get { return install_time; }
-        }
+        public IEnumerable<string> Files => installed_files.Keys;
+        public string identifier => source_module.identifier;
+        public CkanModule Module => source_module;
+        public DateTime InstallTime => install_time;
 
         public bool AutoInstalled
         {
-            get { return auto_installed;  }
-            set { 
+            get => auto_installed;
+            set {
                 if (Module.IsDLC)
                 {
                     throw new ModuleIsDLCKraken(Module);

Core/Registry/Registry.cs

@@ -47,14 +47,7 @@ public class Registry : IEnlistmentNotification, IRegistryQuerier
         [JsonProperty] public readonly SortedDictionary<string, int> download_counts = new SortedDictionary<string, int>();
 
         public int? DownloadCount(string identifier)
-        {
-            int count;
-            if (download_counts.TryGetValue(identifier, out count))
-            {
-                return count;
-            }
-            return null;
-        }
+            => download_counts.TryGetValue(identifier, out int count) ? (int?)count : null;
 
         public void SetDownloadCounts(SortedDictionary<string, int> counts)
         {

GUI/GUIUser.cs

@@ -17,10 +17,8 @@ public GUIUser(Main main, Wait wait)
         /// <summary>
         /// A GUIUser is obviously not headless. Returns false.
         /// </summary>
-        public bool Headless
-        {
-            get { return false; }
-        }
+        public bool Headless => false;
+
 
         /// <summary>
         /// Shows a small form with the question.
@@ -29,9 +27,7 @@ public bool Headless
         /// <returns><c>true</c> if user pressed yes, <c>false</c> if no.</returns>
         /// <param name="question">Question.</param>
         public bool RaiseYesNoDialog(string question)
-        {
-            return main.YesNoDialog(question);
-        }
+            => main.YesNoDialog(question);
 
         /// <summary>
         /// Will show a small form with the message and a list to choose from.
@@ -40,9 +36,7 @@ public bool RaiseYesNoDialog(string question)
         /// <param name="message">Message.</param>
         /// <param name="args">Array of offered options.</param>
         public int RaiseSelectionDialog(string message, params object[] args)
-        {
-            return main.SelectionDialog(message, args);
-        }
+            => main.SelectionDialog(message, args);
 
         /// <summary>
         /// Shows a message box containing the formatted error message.

Tests/Core/Cache.cs

@@ -2,8 +2,10 @@
 using System.IO;
 using System.Threading;
 using System.Globalization;
+
 using NUnit.Framework;
 using Tests.Data;
+
 using CKAN;
 
 namespace Tests.Core

bin/ckan-merge-pr.py

@@ -14,19 +14,23 @@
 
 class CkanRepo(Repo):
 
-    def remote_master(self) -> RemoteReference:
-        return self.heads.master.tracking_branch()
+    def remote_primary(self) -> RemoteReference:
+        return next(filter(lambda ref: 'HEAD' in ref.name, self.refs))
 
-    def master_remote(self) -> Remote:
-        return self.remotes[self.remote_master().remote_name]
+    def primary_name(self) -> str:
+        full = self.remote_primary().ref.name
+        return full[full.index('/')+1:]
 
-    def on_master(self) -> bool:
-        return not self.head.is_detached and self.head.ref.name == 'master'
+    def primary_remote(self) -> Remote:
+        return self.remotes[self.remote_primary().remote_name]
 
-    def master_up_to_date(self) -> bool:
-        print(f'Fetching {self.master_remote().name}...')
-        self.master_remote().fetch()
-        return self.heads.master.commit.hexsha == self.remote_master().commit.hexsha
+    def on_primary_branch(self) -> bool:
+        return not self.head.is_detached and self.head.ref.name == self.primary_name()
+
+    def primary_branch_up_to_date(self) -> bool:
+        print(f'Fetching {self.primary_remote().name}...')
+        self.primary_remote().fetch()
+        return getattr(self.heads, self.primary_name()).commit.hexsha == self.remote_primary().commit.hexsha
 
     def changelog_path(self) -> Path:
         return Path(self.working_dir) / 'CHANGELOG.md'
@@ -38,7 +42,7 @@ def prepend_line(self, path: Path, new_line: str) -> None:
             changelog.writelines(lines)
 
     def user_edit_file(self, path: Path) -> None:
-        editor=self.config_reader().get('core', 'editor')
+        editor = self.config_reader().get('core', 'editor')
         run([editor, str(path)])
 
 class CkanPullRequest:
@@ -86,11 +90,11 @@ def merge_into(self, repo: CkanRepo, self_review: bool) -> bool:
         if not self_review and not self.approvers():
             print(f'PR #{self.pull_request.number} is not approved!')
             return False
-        if not repo.on_master():
-            print(f'Not on master branch!')
+        if not repo.on_primary_branch():
+            print('Not on primary branch!')
             return False
-        if not repo.master_up_to_date():
-            print(f'master branch is not up to date!')
+        if not repo.primary_branch_up_to_date():
+            print('Primary branch is not up to date!')
             return False
         branch = self.latest_commit(repo)
         if not branch: