Get files modified/added/removed from a commit in LibGit2Sharp
I've this method, where I get files from my last commit:
static void GetFiles(Tree t, String dir = "")
{
foreach (TreeEntry treeEntry in t)
{
if (treeEntry.TargetType == TreeEntryTargetType.Tree)
{
Tree tr = repo.Lookup<Tree>(treeEntry.Target.Sha);
GetFiles(tr, dir + "/" + treeEntry.Name);
}
else
{
string caminho = dir + "/" + treeEntry.Path;
arquivos.Add(caminho);
}
}
return;
}
I did a look on this question, but I'm newbie with C# and don't understand.
I have this repository:
c:/teste
| - octocat.txt
| - parentoctocat.txt
| - /outros
| | - octocatblue.txt
| | - octored.txt
My last commit have this files modified:
c:/teste
| - /outros
| | - octocatblue.txt <- This modified
| | - octored.txt <- This new
With my method GetFiles I've all files like in this print. How get only the modified/added/removed files?
How can I get the previous commit and compare getting the tree of difference?
Solution
static void CompareTrees()
{
using (repo)
{
Tree commitTree = repo.Head.Tip.Tree; // Main Tree
Tree parentCommitTree = repo.Head.Tip.Parents.Single().Tree; // Secondary Tree
var patch = repo.Diff.Compare<Patch>(parentCommitTree, commitTree); // Difference
foreach (var ptc in patch)
{
Console.WriteLine(ptc.Status +" -> "+ptc.Path); // Status -> File Path
}
}
}
Because of how git store data in the file systems, a git commit is a snapshot of all the files contained in the commit. Then the Tree object return you the state of all the files of the repository.
I think that you must do the diff between the tree of this commit and the tree of the previous one and I think it should be done with the method Repository.Diff.Compare()