如何获得单个提交的每个更改文件的补丁？ [英] How to get the patch of every changed file of a single commit?

问题描述

我试图通过挖掘git-repository来获取关于commit-history的一些信息。我使用的是包libgit2sharp。

到目前为止，我得到了commit-author，committer，sha-value，commit-date和commit-message。我的问题是在存储库树中移动，以获得每个提交的所有已更改文件的补丁。

以前是否有人解决过这个问题，或者可以帮助我？

 使用（var repo = new Repository（@path \to\.git））
 {
 var commits = repo.Commits; 
提交lastCommit = commits.Last（）; 
 
 foreach（提交中提交提交）
 if（commit.Sha！= lastCommit.Sha）
 {
 Console.WriteLine（commit.Sha）; 
 Console.WriteLine（commit.Author.Name）; 
 Console.WriteLine（commit.Committer.Name）; 
 Console.WriteLine（commit.Author.When）; // Commit-Date 
 Console.WriteLine（commit.Message）; 
 
树树= commit.Tree; 
树parentCommitTree = lastCommit.Tree; 
 
 TreeChanges changes = repo.Diff.Compare< TreeChanges>（parentCommitTree，tree）; 
 foreach（TreeEntryChanges treeEntryChanges in changes）
 {
 ObjectId oldcontenthash = treeEntryChanges.OldOid; 
 ObjectId newcontenthash = treeEntryChanges.Oid; 
} 
} 
} 
  

另一个尝试是以下代码。它显示了根级别的文件和文件夹，但我无法打开一个文件夹。

  foreach（TreeEntry treeEntry in tree） 
 {
 // Blob blob1 =（Blob）treeEntry.Target; 
 
 var targettype = treeEntry.TargetType; 
 if（targettype == TreeEntryTargetType.Blob）
 {
 string filename = treeEntry.Name; 
 string path = treeEntry.Path; 
 string sha = treeEntry.Target.Sha; 
 
 var filemode = treeEntry.Mode; 
 Console.WriteLine（filename）; 
 Console.WriteLine（path）; 
} 
 else if（targettype == TreeEntryTargetType.Tree）
 {
 Console.WriteLine（Folder：+ treeEntry.Name）; 
} 
} 
  

解决方案

>（How）获取每个提交的所有已更改文件的补丁？
$ b 使用 Diff.Compare< ;通过传递每个 Commit 的树来修补>（）愿意进行比较。

 树commitTree1 = repo.Lookup< Commit>（f8d44d7）。 
 Tree commitTree2 = repo.Lookup< Commit>（7252fe2）。 
 
 var patch = repo.Diff.Compare< Patch>（commitTree1，commitTree2）; 
  

通过查看测试方法，可以找到更多的使用细节 CanCompareTwoVersionsOfAFileWithADiffOfTwoHunks（） 中的 DiffTreeToTreeFixture.cs 测试套件。

>另一个尝试是以下代码。它显示了根级别的文件和文件夹，但是我无法打开一个文件夹。

每个 TreeEntry 暴露了一个目标属性，它返回 GitObject 。

当 TargetType 类型为 TreeEntryTargetType.Tree 时，为了检索此子<$ c $

  var subTree =（Tree） ，您必须使用以下内容： treeEntry.Target; 
  

I’m trying to get some information about the commit-history by mining a git-repository. I’m using the package libgit2sharp.

So far, I got the commit-author, committer, sha-value, commit-date and the commit-message. My problem is to move through the repository-tree, to get the patch of all changed files of every single commit.

Does anybody solve this problem before, or can help me?

using (var repo = new Repository(@"path\to\.git"))
            {
                var commits = repo.Commits; 
                Commit lastCommit = commits.Last();

                foreach (Commit commit in commits)
                    if (commit.Sha != lastCommit.Sha)
                    {
                        Console.WriteLine(commit.Sha);
                        Console.WriteLine(commit.Author.Name);
                        Console.WriteLine(commit.Committer.Name);
                        Console.WriteLine(commit.Author.When); //Commit-Date
                        Console.WriteLine(commit.Message);

                        Tree tree = commit.Tree;
                        Tree parentCommitTree = lastCommit.Tree; 

                        TreeChanges changes = repo.Diff.Compare<TreeChanges>(parentCommitTree, tree);
                        foreach (TreeEntryChanges treeEntryChanges in changes)
                        {
                            ObjectId oldcontenthash = treeEntryChanges.OldOid;
                            ObjectId newcontenthash = treeEntryChanges.Oid;
                        } 
                     }   
            }

Another trying is the following code. It shows the files and folder of the root-level, but I cant open a folder.

foreach(TreeEntry treeEntry in tree)
   {
    // Blob blob1 = (Blob)treeEntry.Target;

    var targettype = treeEntry.TargetType;
    if (targettype == TreeEntryTargetType.Blob)
      {
        string filename = treeEntry.Name;
        string path = treeEntry.Path;
        string sha = treeEntry.Target.Sha;

        var filemode = treeEntry.Mode;
        Console.WriteLine(filename);
        Console.WriteLine(path);
      }
      else if (targettype == TreeEntryTargetType.Tree)
        {
         Console.WriteLine("Folder: " + treeEntry.Name);
        }
   }

解决方案

>(How) to get the patch of all changed files of every single commit?

Use the Diff.Compare<Patch>() method by passing it the Tree of each Commit you're willing to compare.

Tree commitTree1 = repo.Lookup<Commit>("f8d44d7").Tree;
Tree commitTree2 = repo.Lookup<Commit>("7252fe2").Tree;

var patch = repo.Diff.Compare<Patch>(commitTree1, commitTree2);

One can find more usage details by taking a look at the test metthod CanCompareTwoVersionsOfAFileWithADiffOfTwoHunks() in the DiffTreeToTreeFixture.cs test suite.

>Another trying is the following code. It shows the files and folder of the root-level, but I cant open a folder.

Each TreeEntry exposes a Target property returning the pointed at GitObject.

When the TargetType is of type TreeEntryTargetType.Tree, in order to retrieve this child Tree, you'd have to use the following:

var subTree = (Tree)treeEntry.Target;

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