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using System;
using System.Runtime.InteropServices;
using LibGit2Sharp.Core;
using LibGit2Sharp.Core.Handles;
namespace LibGit2Sharp
{
/// <summary>
/// A reference to a <see cref = "Blob" /> known by the <see cref = "Index" />.
/// </summary>
public class IndexEntry : IEquatable<IndexEntry>
{
private static readonly LambdaEqualityHelper<IndexEntry> equalityHelper =
new LambdaEqualityHelper<IndexEntry>(new Func<IndexEntry, object>[] { x => x.Path, x => x.Id, x => x.State });
private Func<FileStatus> state;
private static readonly Utf8Marshaler marshaler = (Utf8Marshaler)Utf8Marshaler.GetInstance(string.Empty);
/// <summary>
/// State of the version of the <see cref = "Blob" /> pointed at by this <see cref = "IndexEntry" />,
/// compared against the <see cref = "Blob" /> known from the <see cref = "Repository.Head" /> and the file in the working directory.
/// </summary>
public FileStatus State
{
get { return state(); }
}
/// <summary>
/// Gets the relative path to the file within the working directory.
/// </summary>
public string Path { get; private set; }
/// <summary>
/// Gets the id of the <see cref = "Blob" /> pointed at by this index entry.
/// </summary>
public ObjectId Id { get; private set; }
internal static IndexEntry CreateFromPtr(Repository repo, IndexEntrySafeHandle handle)
{
GitIndexEntry entry = handle.MarshalAsGitIndexEntry();
FilePath path = (string)marshaler.MarshalNativeToManaged(entry.Path);
return new IndexEntry
{
Path = path.Native,
Id = new ObjectId(entry.oid),
state = () => repo.Index.RetrieveStatus(path.Native)
};
}
/// <summary>
/// Determines whether the specified <see cref = "Object" /> is equal to the current <see cref = "IndexEntry" />.
/// </summary>
/// <param name = "obj">The <see cref = "Object" /> to compare with the current <see cref = "IndexEntry" />.</param>
/// <returns>True if the specified <see cref = "Object" /> is equal to the current <see cref = "IndexEntry" />; otherwise, false.</returns>
public override bool Equals(object obj)
{
return Equals(obj as IndexEntry);
}
/// <summary>
/// Determines whether the specified <see cref = "IndexEntry" /> is equal to the current <see cref = "IndexEntry" />.
/// </summary>
/// <param name = "other">The <see cref = "IndexEntry" /> to compare with the current <see cref = "IndexEntry" />.</param>
/// <returns>True if the specified <see cref = "IndexEntry" /> is equal to the current <see cref = "IndexEntry" />; otherwise, false.</returns>
public bool Equals(IndexEntry other)
{
return equalityHelper.Equals(this, other);
}
/// <summary>
/// Returns the hash code for this instance.
/// </summary>
/// <returns>A 32-bit signed integer hash code.</returns>
public override int GetHashCode()
{
return equalityHelper.GetHashCode(this);
}
/// <summary>
/// Tests if two <see cref = "IndexEntry" /> are equal.
/// </summary>
/// <param name = "left">First <see cref = "IndexEntry" /> to compare.</param>
/// <param name = "right">Second <see cref = "IndexEntry" /> to compare.</param>
/// <returns>True if the two objects are equal; false otherwise.</returns>
public static bool operator ==(IndexEntry left, IndexEntry right)
{
return Equals(left, right);
}
/// <summary>
/// Tests if two <see cref = "IndexEntry" /> are different.
/// </summary>
/// <param name = "left">First <see cref = "IndexEntry" /> to compare.</param>
/// <param name = "right">Second <see cref = "IndexEntry" /> to compare.</param>
/// <returns>True if the two objects are different; false otherwise.</returns>
public static bool operator !=(IndexEntry left, IndexEntry right)
{
return !Equals(left, right);
}
}
}
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