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Viewing changes to contrib/NGit/NGit.Api/RenameBranchCommand.cs

  • Committer: Bazaar Package Importer
  • Author(s): Jo Shields
  • Date: 2011-06-27 17:03:13 UTC
  • mto: (1.8.1 upstream)
  • mto: This revision was merged to the branch mainline in revision 54.
  • Revision ID: james.westby@ubuntu.com-20110627170313-6cvz3s19x6e9hqe9
Import upstream version 2.5.92+dfsg

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contrib/NGit/NGit.Api/RenameBranchCommand.cs
 
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/*
 
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This code is derived from jgit (http://eclipse.org/jgit).
 
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Copyright owners are documented in jgit's IP log.
 
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This program and the accompanying materials are made available
 
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under the terms of the Eclipse Distribution License v1.0 which
 
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accompanies this distribution, is reproduced below, and is
 
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available at http://www.eclipse.org/org/documents/edl-v10.php
 
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All rights reserved.
 
11
 
 
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Redistribution and use in source and binary forms, with or
 
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without modification, are permitted provided that the following
 
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conditions are met:
 
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- Redistributions of source code must retain the above copyright
 
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  notice, this list of conditions and the following disclaimer.
 
18
 
 
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- Redistributions in binary form must reproduce the above
 
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  copyright notice, this list of conditions and the following
 
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  disclaimer in the documentation and/or other materials provided
 
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  with the distribution.
 
23
 
 
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- Neither the name of the Eclipse Foundation, Inc. nor the
 
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  names of its contributors may be used to endorse or promote
 
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  products derived from this software without specific prior
 
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  written permission.
 
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
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*/
 
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using System.IO;
 
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using NGit;
 
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using NGit.Api;
 
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using NGit.Api.Errors;
 
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using Sharpen;
 
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namespace NGit.Api
 
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{
 
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        /// <summary>Used to rename branches.</summary>
 
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        /// <remarks>Used to rename branches.</remarks>
 
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        /// <seealso><a
 
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        /// *      href="http://www.kernel.org/pub/software/scm/git/docs/git-branch.html"
 
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        /// *      >Git documentation about Branch</a></seealso>
 
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        public class RenameBranchCommand : GitCommand<Ref>
 
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        {
 
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                private string oldName;
 
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                private string newName;
 
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                /// <param name="repo"></param>
 
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                protected internal RenameBranchCommand(Repository repo) : base(repo)
 
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                {
 
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                }
 
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                /// <exception cref="NGit.Api.Errors.RefNotFoundException">
 
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                /// if the old branch can not be found (branch with provided old
 
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                /// name does not exist or old name resolves to a tag)
 
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                /// </exception>
 
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                /// <exception cref="NGit.Api.Errors.InvalidRefNameException">
 
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                /// if the provided new name is <code>null</code> or otherwise
 
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                /// invalid
 
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                /// </exception>
 
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                /// <exception cref="NGit.Api.Errors.RefAlreadyExistsException">if a branch with the new name already exists
 
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                ///     </exception>
 
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                /// <exception cref="NGit.Api.Errors.DetachedHeadException">
 
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                /// if rename is tried without specifying the old name and HEAD
 
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                /// is detached
 
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                /// </exception>
 
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                public override Ref Call()
 
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                {
 
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                        CheckCallable();
 
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                        if (newName == null)
 
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                        {
 
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                                throw new InvalidRefNameException(MessageFormat.Format(JGitText.Get().branchNameInvalid
 
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                                        , "<null>"));
 
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                        }
 
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                        try
 
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                        {
 
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                                string fullOldName;
 
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                                string fullNewName;
 
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                                if (repo.GetRef(newName) != null)
 
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                                {
 
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                                        throw new RefAlreadyExistsException(MessageFormat.Format(JGitText.Get().refAlreadExists
 
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                                                , newName));
 
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                                }
 
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                                if (oldName != null)
 
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                                {
 
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                                        Ref @ref = repo.GetRef(oldName);
 
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                                        if (@ref == null)
 
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                                        {
 
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                                                throw new RefNotFoundException(MessageFormat.Format(JGitText.Get().refNotResolved
 
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                                                        , oldName));
 
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                                        }
 
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                                        if (@ref.GetName().StartsWith(Constants.R_TAGS))
 
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                                        {
 
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                                                throw new RefNotFoundException(MessageFormat.Format(JGitText.Get().renameBranchFailedBecauseTag
 
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                                                        , oldName));
 
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                                        }
 
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                                        fullOldName = @ref.GetName();
 
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                                }
 
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                                else
 
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                                {
 
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                                        fullOldName = repo.GetFullBranch();
 
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                                        if (ObjectId.IsId(fullOldName))
 
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                                        {
 
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                                                throw new DetachedHeadException();
 
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                                        }
 
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                                }
 
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                                if (fullOldName.StartsWith(Constants.R_REMOTES))
 
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                                {
 
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                                        fullNewName = Constants.R_REMOTES + newName;
 
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                                }
 
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                                else
 
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                                {
 
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                                        fullNewName = Constants.R_HEADS + newName;
 
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                                }
 
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                                if (!Repository.IsValidRefName(fullNewName))
 
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                                {
 
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                                        throw new InvalidRefNameException(MessageFormat.Format(JGitText.Get().branchNameInvalid
 
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                                                , fullNewName));
 
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                                }
 
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                                RefRename rename = repo.RenameRef(fullOldName, fullNewName);
 
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                                RefUpdate.Result renameResult = rename.Rename();
 
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                                SetCallable(false);
 
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                                bool ok = RefUpdate.Result.RENAMED == renameResult;
 
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                                if (ok)
 
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                                {
 
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                                        if (fullNewName.StartsWith(Constants.R_HEADS))
 
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                                        {
 
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                                                // move the upstream configuration over to the new branch
 
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                                                string shortOldName = Sharpen.Runtime.Substring(fullOldName, Constants.R_HEADS.Length
 
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                                                        );
 
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                                                StoredConfig repoConfig = repo.GetConfig();
 
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                                                string oldRemote = repoConfig.GetString(ConfigConstants.CONFIG_BRANCH_SECTION, shortOldName
 
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                                                        , ConfigConstants.CONFIG_KEY_REMOTE);
 
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                                                if (oldRemote != null)
 
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                                                {
 
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                                                        repoConfig.SetString(ConfigConstants.CONFIG_BRANCH_SECTION, newName, ConfigConstants
 
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                                                                .CONFIG_KEY_REMOTE, oldRemote);
 
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                                                }
 
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                                                string oldMerge = repoConfig.GetString(ConfigConstants.CONFIG_BRANCH_SECTION, shortOldName
 
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                                                        , ConfigConstants.CONFIG_KEY_MERGE);
 
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                                                if (oldMerge != null)
 
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                                                {
 
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                                                        repoConfig.SetString(ConfigConstants.CONFIG_BRANCH_SECTION, newName, ConfigConstants
 
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                                                                .CONFIG_KEY_MERGE, oldMerge);
 
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                                                }
 
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                                                repoConfig.UnsetSection(ConfigConstants.CONFIG_BRANCH_SECTION, shortOldName);
 
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                                                repoConfig.Save();
 
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                                        }
 
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                                }
 
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                                else
 
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                                {
 
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                                        throw new JGitInternalException(MessageFormat.Format(JGitText.Get().renameBranchUnexpectedResult
 
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                                                , renameResult.ToString()));
 
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                                }
 
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                                Ref resultRef = repo.GetRef(newName);
 
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                                if (resultRef == null)
 
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                                {
 
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                                        throw new JGitInternalException(JGitText.Get().renameBranchFailedUnknownReason);
 
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                                }
 
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                                return resultRef;
 
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                        }
 
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                        catch (IOException ioe)
 
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                        {
 
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                                throw new JGitInternalException(ioe.Message, ioe);
 
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                        }
 
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                }
 
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                /// <param name="newName">the new name</param>
 
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                /// <returns>this instance</returns>
 
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                public virtual NGit.Api.RenameBranchCommand SetNewName(string newName)
 
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                {
 
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                        CheckCallable();
 
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                        this.newName = newName;
 
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                        return this;
 
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                }
 
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                /// <param name="oldName">
 
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                /// the name of the branch to rename; if not set, the currently
 
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                /// checked out branch (if any) will be renamed
 
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                /// </param>
 
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                /// <returns>this instance</returns>
 
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                public virtual NGit.Api.RenameBranchCommand SetOldName(string oldName)
 
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                {
 
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                        CheckCallable();
 
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                        this.oldName = oldName;
 
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                        return this;
 
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                }
 
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        }
 
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}