Introduce StatusOptions.IncludeUnaltered

3 files changed, 88 insertions, 16 deletions

diff --git a/LibGit2Sharp.Tests/StatusFixture.cs b/LibGit2Sharp.Tests/StatusFixture.cs
index e8f9d731..476dab8b 100644
--- a/LibGit2Sharp.Tests/StatusFixture.cs
+++ b/LibGit2Sharp.Tests/StatusFixture.cs
@@ -103,20 +103,22 @@ namespace LibGit2Sharp.Tests
             }
         }
 
-        [Fact]
-        public void CanRetrieveTheStatusOfTheWholeWorkingDirectory()
+        [Theory]
+        [InlineData(false, 0)]
+        [InlineData(true, 5)]
+        public void CanRetrieveTheStatusOfTheWholeWorkingDirectory(bool includeUnaltered, int unalteredCount)
         {
             string path = SandboxStandardTestRepo();
             using (var repo = new Repository(path))
             {
                 const string file = "modified_staged_file.txt";
 
-                RepositoryStatus status = repo.RetrieveStatus();
+                RepositoryStatus status = repo.RetrieveStatus(new StatusOptions() { IncludeUnaltered = includeUnaltered });
 
                 Assert.Equal(FileStatus.Staged, status[file].State);
 
                 Assert.NotNull(status);
-                Assert.Equal(6, status.Count());
+                Assert.Equal(6 + unalteredCount, status.Count());
                 Assert.True(status.IsDirty);
 
                 Assert.Equal("new_untracked_file.txt", status.Untracked.Select(s => s.FilePath).Single());
@@ -131,11 +133,11 @@ namespace LibGit2Sharp.Tests
 
                 Assert.Equal(FileStatus.Staged | FileStatus.Modified, repo.RetrieveStatus(file));
 
-                RepositoryStatus status2 = repo.RetrieveStatus();
+                RepositoryStatus status2 = repo.RetrieveStatus(new StatusOptions() { IncludeUnaltered = includeUnaltered });
                 Assert.Equal(FileStatus.Staged | FileStatus.Modified, status2[file].State);
 
                 Assert.NotNull(status2);
-                Assert.Equal(6, status2.Count());
+                Assert.Equal(6 + unalteredCount, status2.Count());
                 Assert.True(status2.IsDirty);
 
                 Assert.Equal("new_untracked_file.txt", status2.Untracked.Select(s => s.FilePath).Single());
@@ -242,14 +244,16 @@ namespace LibGit2Sharp.Tests
             }
         }
 
-        [Fact]
-        public void CanRetrieveTheStatusOfANewRepository()
+        [Theory]
+        [InlineData(true)]
+        [InlineData(false)]
+        public void CanRetrieveTheStatusOfANewRepository(bool includeUnaltered)
         {
             string repoPath = InitNewRepository();
 
             using (var repo = new Repository(repoPath))
             {
-                RepositoryStatus status = repo.RetrieveStatus();
+                RepositoryStatus status = repo.RetrieveStatus(new StatusOptions() { IncludeUnaltered = includeUnaltered });
                 Assert.NotNull(status);
                 Assert.Equal(0, status.Count());
                 Assert.False(status.IsDirty);
@@ -592,5 +596,43 @@ namespace LibGit2Sharp.Tests
                 Assert.Equal("hello.txt", status.Modified.Single().FilePath);
             }
         }
+
+        [Fact]
+        public void CanIncludeStatusOfUnalteredFiles()
+        {
+            var path = SandboxStandardTestRepo();
+            string[] unalteredPaths = {
+                "1.txt",
+                "1" + Path.DirectorySeparatorChar + "branch_file.txt",
+                "branch_file.txt",
+                "new.txt",
+                "README",
+            };
+
+            using (var repo = new Repository(path))
+            {
+                RepositoryStatus status = repo.RetrieveStatus(new StatusOptions() { IncludeUnaltered = true });
+
+                Assert.Equal(unalteredPaths.Length, status.Unaltered.Count());
+                Assert.Equal(unalteredPaths, status.Unaltered.OrderBy(s => s.FilePath).Select(s => s.FilePath).ToArray());
+            }
+        }
+
+        [Fact]
+        public void UnalteredFilesDontMarkIndexAsDirty()
+        {
+            var path = SandboxStandardTestRepo();
+
+            using (var repo = new Repository(path))
+            {
+                repo.Reset(ResetMode.Hard);
+                repo.RemoveUntrackedFiles();
+
+                RepositoryStatus status = repo.RetrieveStatus(new StatusOptions() { IncludeUnaltered = true });
+
+                Assert.Equal(false, status.IsDirty);
+                Assert.Equal(9, status.Count());
+            }
+        }
     }
 }
diff --git a/LibGit2Sharp/RepositoryStatus.cs b/LibGit2Sharp/RepositoryStatus.cs
index 1eac10e1..d5e82ef4 100644
--- a/LibGit2Sharp/RepositoryStatus.cs
+++ b/LibGit2Sharp/RepositoryStatus.cs
@@ -26,6 +26,7 @@ namespace LibGit2Sharp
         private readonly List<StatusEntry> ignored = new List<StatusEntry>();
         private readonly List<StatusEntry> renamedInIndex = new List<StatusEntry>();
         private readonly List<StatusEntry> renamedInWorkDir = new List<StatusEntry>();
+        private readonly List<StatusEntry> unaltered = new List<StatusEntry>();
         private readonly bool isDirty;
 
         private readonly IDictionary<FileStatus, Action<RepositoryStatus, StatusEntry>> dispatcher = Build();
@@ -42,7 +43,7 @@ namespace LibGit2Sharp
                            { FileStatus.Removed, (rs, s) => rs.removed.Add(s) },
                            { FileStatus.RenamedInIndex, (rs, s) => rs.renamedInIndex.Add(s) },
                            { FileStatus.Ignored, (rs, s) => rs.ignored.Add(s) },
-                           { FileStatus.RenamedInWorkDir, (rs, s) => rs.renamedInWorkDir.Add(s) }
+                           { FileStatus.RenamedInWorkDir, (rs, s) => rs.renamedInWorkDir.Add(s) },
                        };
         }
 
@@ -81,7 +82,7 @@ namespace LibGit2Sharp
                     AddStatusEntryForDelta(entry.Status, deltaHeadToIndex, deltaIndexToWorkDir);
                 }
 
-                isDirty = statusEntries.Any(entry => entry.State != FileStatus.Ignored);
+                isDirty = statusEntries.Any(entry => entry.State != FileStatus.Ignored && entry.State != FileStatus.Unaltered);
             }
         }
 
@@ -134,6 +135,12 @@ namespace LibGit2Sharp
                     GitStatusOptionFlags.DisablePathspecMatch;
             }
 
+            if (options.IncludeUnaltered)
+            {
+                coreOptions.Flags |=
+                    GitStatusOptionFlags.IncludeUnmodified;
+            }
+
             return coreOptions;
         }
 
@@ -164,14 +171,21 @@ namespace LibGit2Sharp
 
             StatusEntry statusEntry = new StatusEntry(filePath, gitStatus, headToIndexRenameDetails, indexToWorkDirRenameDetails);
 
-            foreach (KeyValuePair<FileStatus, Action<RepositoryStatus, StatusEntry>> kvp in dispatcher)
+            if (gitStatus == FileStatus.Unaltered)
             {
-                if (!gitStatus.HasFlag(kvp.Key))
+                unaltered.Add(statusEntry);
+            }
+            else
+            {
+                foreach (KeyValuePair<FileStatus, Action<RepositoryStatus, StatusEntry>> kvp in dispatcher)
                 {
-                    continue;
-                }
+                    if (!gitStatus.HasFlag(kvp.Key))
+                    {
+                        continue;
+                    }
 
-                kvp.Value(this, statusEntry);
+                    kvp.Value(this, statusEntry);
+                }
             }
 
             statusEntries.Add(statusEntry);
@@ -290,6 +304,14 @@ namespace LibGit2Sharp
         }
 
         /// <summary>
+        /// List of files that were unmodified in the working directory.
+        /// </summary>
+        public virtual IEnumerable<StatusEntry> Unaltered
+        {
+            get { return unaltered; }
+        }
+
+        /// <summary>
         /// True if the index or the working directory has been altered since the last commit. False otherwise.
         /// </summary>
         public virtual bool IsDirty
diff --git a/LibGit2Sharp/StatusOptions.cs b/LibGit2Sharp/StatusOptions.cs
index a7e51760..f389303a 100644
--- a/LibGit2Sharp/StatusOptions.cs
+++ b/LibGit2Sharp/StatusOptions.cs
@@ -76,5 +76,13 @@
         /// as explicit paths, and NOT as pathspecs containing globs.
         /// </summary>
         public bool DisablePathSpecMatch { get; set; }
+
+        /// <summary>
+        /// Include unaltered files when scanning for status
+        /// </summary>
+        /// <remarks>
+        /// Unaltered meaning the file is identical in the working directory, the index and HEAD.
+        /// </remarks>
+        public bool IncludeUnaltered { get; set; }
     }
 }