Yade on GitHub¶
Fast checkout without GitHub account (read-only)¶
Getting the source code without registering on GitHub can be done via a single command. It will not allow interactions with the remote repository, which you access the read-only way:
git clone https://github.com/yade/trunk.git
Using branches on GitHub (for frequent commits see git/trunk section below)¶
Most usefull commands are below. For more details, see for instance http://gitref.org/index.html and https://help.github.com/articles/set-up-git
Setup¶
- Register on github.com
- Add your SSH key to GitHub:
On the GitHub site Click “Account Settings” (top right) > Click “SSH keys” > Click “Add SSH key”
- Set your username and email through terminal:
git config --global user.name "Firstname Lastname" git config --global user.email "your_email@youremail.com"
Click the “Fork” button on the https://github.com/yade/trunk
- Set Up Your Local Repo through terminal:
git clone git@github.com:username/trunk.gitThis creates a new folder, named trunk, that contains the whole code.
- Configure remotes
cd to/newly/created/folder git remote add upstream git@github.com:yade/trunk.git git fetch upstreamNow, your “trunk” folder is linked with the code hosted on github.com. Through appropriate commands explained below, you will be able to update your code to include changes commited by others, or to commit yourself changes that others can get.
Retrieving older Commits¶
In case you want to work with, or compile, an older version of Yade which is not tagged, you can create your own (local) branch of the corresponding daily build. Look here for details.
Committing and updating¶
For those used to other version control systems, note that the commit mechanisms in Git significantly differs from that of Bazaar or SVN. Therefore, don’t expect to find a one-to-one command replacement. In some cases, however, the equivalent bazaar command is indicated below to ease the transition.
Inspecting changes¶
You may start by inspecting your changes with a few commands. For the “diff” command, it is convenient to copy from the output of “status” instead of typing the path to modified files.
git status
git diff path/to/modified/file.cpp
Committing changes¶
Then you proceed to commit through terminal:
git add path/to/new/file.cpp #Version a newly created file: equivalent of "bzr add"
git commit path/to/new_or_modified/file.cpp -m'Commit message'`` #Validate a change. It can be done several times after every sufficient change. No equivalent in bzr, it's like commiting to your own local repository
git push #Push your changes into GitHub. Equivalent of "bzr commit", except that your are commiting to your own remote branch
Changes will be pushed to your personal “fork”, If you have tested your changes and you are ready to push them into the main trunk, just do a “pull request” [5] or create a patch from your commit via:
git format-patch origin #create patch file in current folder)
and send to the developers maililng list (yade-dev@lists.launchpad.net) as attachment. In either way, after reviewing your changes they will be added to the main trunk.
When the pull request has been reviewed and accepted, your changes are integrated in the main trunk. Everyone will get them via git fetch
.
Updating¶
You may want to get changes done by others:
git fetch upstream #Pull new updates from the upstream to your branch. Eq. of "bzr update", updating the remote branch from the upstream yade/trunk
git merge upstream/master #Merge upstream changes into your master-branch (eq. of "bzr update", updating your local repository from the remote branch)
Alternatively, this will do fetch+merge all at once (discouraged if you have uncommited changes):
git pull
Working directly on git/trunk (recommended for frequent commits)¶
This direct access to trunk will sound more familiar to bzr or svn users. It is only possible for members of the git team “developpers”. Send an email at yade-dev@lists.launchpad.net to join this team (don’t forget to tell your git account name).
- Get trunk:
git clone git@github.com:yade/trunk.gitThis creates a new folder, named trunk, that contains the whole code.
- Update
git pull
- Commit to local repository
git commit filename1 filename2 ...
- Push changes to remote trunk
git pushNow, the changes you made are included in the on-line code, and can be get back by every user.
To avoid confusing logs after each commit/pull/push cycle, it is better to setup automatic rebase:
git config --global branch.autosetuprebase always
Now your file ~/.gitconfig should include:
- [branch]
- autosetuprebase = always
Check also .git/config file in your local trunk folder (rebase = true):
- [branch “master”]
remote = origin
merge = refs/heads/master
rebase = true
Auto-rebase may have unpleasant side effects by blocking “pull” if you have uncommited changes. In this case you can use “git stash”:
git pull
lib/SConscript: needs update
refusing to pull with rebase: your working tree is not up-to-date
git stash #hide the uncommited changes away
git pull #now it's ok
git push #push the commited changes
git stash pop #get uncommited changes back
General guidelines for pushing to yade/trunk¶
- Set autorebase once on the computer! (see above)
- Inspect the diff to make sure you will not commit junk code (typically some “cout<<” left here and there), using in terminal:
git diff file1Or, alternatively, any GUI for git: gitg, git-cola...
- Commit selectively:
git commit file1 file2 file3 -m "message" # is good git commit -a -m "message" # is bad. It is the best way to commit things that should not be commited
- Be sure to work with an up-to-date version launching:
git pull
- Make sure it compiles and that regression tests pass: try “yade –test” and “yade –check”.
- You can finally let all Yade-users enjoy your work:
git push
Thanks a lot for your cooperation to Yade!