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using System.Collections;
using System.Collections.Generic;
using System.Linq;
using LibGit2Sharp.Core;
using LibGit2Sharp.Core.Handles;
namespace LibGit2Sharp
{
/// <summary>
/// The collection of <see cref = "Remote" /> in a <see cref = "Repository" />
/// </summary>
public class RemoteCollection : IEnumerable<Remote>
{
private readonly Repository repository;
internal RemoteCollection(Repository repository)
{
this.repository = repository;
}
/// <summary>
/// Gets the <see cref = "Remote" /> with the specified name.
/// </summary>
/// <param name = "name">The name of the remote to retrieve.</param>
/// <returns>The retrived <see cref = "Remote" /> if it has been found, null otherwise.</returns>
public Remote this[string name]
{
get { return RemoteForName(name); }
}
internal RemoteSafeHandle LoadRemote(string name, bool throwsIfNotFound)
{
RemoteSafeHandle handle;
int res = NativeMethods.git_remote_load(out handle, repository.Handle, name);
if (res == (int)GitErrorCode.GIT_ENOTFOUND && !throwsIfNotFound)
{
return null;
}
Ensure.Success(res);
return handle;
}
private Remote RemoteForName(string name)
{
using (RemoteSafeHandle handle = LoadRemote(name, false))
{
return Remote.CreateFromPtr(handle);
}
}
/// <summary>
/// Returns an enumerator that iterates through the collection.
/// </summary>
/// <returns>An <see cref = "IEnumerator{T}" /> object that can be used to iterate through the collection.</returns>
public IEnumerator<Remote> GetEnumerator()
{
return Libgit2UnsafeHelper
.ListAllRemoteNames(repository.Handle)
.Select(n => this[n])
.GetEnumerator();
}
/// <summary>
/// Returns an enumerator that iterates through the collection.
/// </summary>
/// <returns>An <see cref = "IEnumerator" /> object that can be used to iterate through the collection.</returns>
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
/// <summary>
/// Creates a <see cref="Remote"/> with the specified name and for the repository at the specified location
/// </summary>
/// <param name = "name">The name of the remote to create.</param>
/// <param name = "url">The location of the repository.</param>
/// <returns>A new <see cref = "Remote" />.</returns>
public Remote Create(string name, string url)
{
Ensure.ArgumentNotNull(name, "name");
Ensure.ArgumentNotNull(url, "url");
RemoteSafeHandle handle;
//TODO: Allow passing a fetch refspec
int res = NativeMethods.git_remote_new(out handle, repository.Handle, name, url, null);
Ensure.Success(res);
using (handle)
{
res = NativeMethods.git_remote_save(handle);
Ensure.Success(res);
return Remote.CreateFromPtr(handle);
}
}
}
}
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