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using System;
using System.Text;
using LibGit2Sharp.Core;
namespace LibGit2Sharp
{
/// <summary>
/// Holds the changes between two <see cref = "Blob" />s.
/// </summary>
public class ContentChanges : Changes
{
/// <summary>
/// Needed for mocking purposes.
/// </summary>
protected ContentChanges()
{ }
internal ContentChanges(Repository repo, Blob oldBlob, Blob newBlob, GitDiffOptions options)
{
Proxy.git_diff_blobs(repo.Handle,
oldBlob != null ? oldBlob.Id : null,
newBlob != null ? newBlob.Id : null,
options, FileCallback, HunkCallback, LineCallback);
}
private int FileCallback(GitDiffDelta delta, float progress, IntPtr payload)
{
IsBinaryComparison = delta.IsBinary();
if (!IsBinaryComparison)
{
return 0;
}
AppendToPatch("Binary content differ\n");
return 0;
}
private int HunkCallback(GitDiffDelta delta, GitDiffRange range, IntPtr header, UIntPtr headerlen, IntPtr payload)
{
string decodedContent = Utf8Marshaler.FromNative(header, (int)headerlen);
AppendToPatch(decodedContent);
return 0;
}
private int LineCallback(GitDiffDelta delta, GitDiffRange range, GitDiffLineOrigin lineorigin, IntPtr content, UIntPtr contentlen, IntPtr payload)
{
string decodedContent = Utf8Marshaler.FromNative(content, (int)contentlen);
string prefix;
switch (lineorigin)
{
case GitDiffLineOrigin.GIT_DIFF_LINE_ADDITION:
LinesAdded++;
prefix = Encoding.ASCII.GetString(new[] { (byte)lineorigin });
break;
case GitDiffLineOrigin.GIT_DIFF_LINE_DELETION:
LinesDeleted++;
prefix = Encoding.ASCII.GetString(new[] { (byte)lineorigin });
break;
case GitDiffLineOrigin.GIT_DIFF_LINE_CONTEXT:
prefix = Encoding.ASCII.GetString(new[] { (byte)lineorigin });
break;
default:
prefix = string.Empty;
break;
}
AppendToPatch(prefix);
AppendToPatch(decodedContent);
return 0;
}
}
}
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