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| − | The Dreamwidth code uses a [http://www.selenic.com/mercurial/wiki/index.cgi/Tutorial Mercurial] repository. However, it also uses code that uses different repository systems like [http://www.owlnet.rice.edu/~comp314/svn.html Subversion].
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| − | There are currently two separate strategies for editing code, [[Dev Version Control#Working with $LJHOME/bin/cvsreport.pl|Working with $LJHOME/bin/cvsreport.pl]] and [[Dev Version Control#Using Mercurial|Using Mercurial]].
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| − | == Checking out the code ==
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| − | Get the bootstrap script that downloads all of the code:
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| − | wget http://hg.dwscoalition.org/dw-free/raw-file/tip/bin/bootstrap.pl
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| − | If your <code>$LJHOME</code> environment variable is set up (see [[Dreamwidth Scratch Installation]] for more information on this), run the script:
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| − | perl bootstrap.pl
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| − | Checking out all the various packages and repositories will take some time. Afterwards, you can delete the bootstrap script:
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| − | rm bootstrap.pl
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| − | == Working with $LJHOME/bin/cvsreport.pl ==
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| − | The workhorse that ties all the version control systems of all the code bases together is <code>$LJHOME/bin/cvsreport.pl</code>. With it, you can update to new versions and track changes.
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| − | Here is a list of the options that come up with <code>bin/cvsreport.pl -help</code>:
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| − | --help Get this help
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| − | --sync Put files where they need to go.
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| − | All files, unless you specify which ones.
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| − | --diff Show diffs of changed files.
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| − | --cvsonly Don't consider files changed in live dirs.
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| − | --liveonly Don't consider files changed in the CVS dirs.
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| − | --init Copy all files from cvs to main, unconditionally.
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| − | --update Updates files in the CVS dirs from the cvs repositories.
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| − | --justfiles -1 Only output files, not the old -> new arrow. (good for xargs)
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| − | --livelist -ll Output the list of all accounted-for files.
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| − | --which Output the source of the given file
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| − | --these -t Refuse to --sync if no files are specified.
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| − | --map Like --livelist and --which combined.
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| − | --all Overrides --these, allowing --sync to run with no args.
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| − | --print-current-branches -pcb Print repositories and their current branches
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| − | --print-branches -pb Print repositories and their branches.
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| − | --print-repos -pr Print repositories and their resource URLs.
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| − | --print-vars -pv Print configuration variables specified in .conf files.
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| − | --no-space-changes -b Do not display whitespace differences.
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| − | === Updating to the latest code ===
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| − | See the [[Dev Maintenance]] article for instructions on this.
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| − | === Displaying code changes ===
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| − | This will show all the changes you've made to the code:
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| − | $LJHOME/bin/cvsreport.pl -diff
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| − | You can make a patch by directing this output to a file (see [[Dev Patches]] for more information on patches):
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| − | $LJHOME/bin/cvsreport.pl -diff > PATCHFILE.
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| − | Suggested patchfile name should be something along the lines of bug#_desc.patch, like bug56_titlefix.patch.
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| − | === Reverting changes ===
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| − | There is unfortunately no <code>.$LJHOME/bin/cvsreport.pl -revert</code>. One way to revert changes is to delete the file with the changes from the live code and then run:
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| − | $LJHOME/bin/cvsreport.pl -sync -cvsonly
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| − | == Using Mercurial ==
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| − | === Mercurial Queues ===
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| − | Mercurial queues is a feature for managing commits as a series of patches. It's good for making local changes that are meant to be temporary, like patches you are working on before submitting them to review/commit. Instead of mixing your commits with the official ones, you can have a series, or queue, of patches which can be applied or unapplied at any time. It's also useful when you're going through files implementing a new feature. While you're doing that, you see typos, bugs, or missing/misleading comments and you need to sort your changes by type.
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| − | This is useful to make a convient updatable workflow: apply your patches while you are working, unapply before you grab the latest changes to prevent conflict, merge in the updates, then apply your patches again.
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| − | When you are working with an MQ system, you will be making changes to the code in the <code>$LJHOME/cvs/dw-free</code> directory. To apply and test those changes to the live code, you will need to use <code>$LJHOME/bin/cvsreport.pl</code> to sync. An easy way to do this is to make an alias <code>dwsync</code> command:
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| − | alias dwsync="$LJHOME/bin/cvsreport.pl --sync --cvsonly"
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| − | === Starting out ===
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| − | Check that mercurial queues are enabled on your system with:
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| − | hg help
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| − | There should be a section of commands that start with q.
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| − | To set up MQ for Dreamwidth code, first create a repository to store and keep track of your patches:
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| − | cd $LJHOME/cvs/dw-free
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| − | hg qinit -c
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| − | === Working with patches ===
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| − | To start out with, make sure you are in dw-free:
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| − | cd $LJHOME/cvs/dw-free
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| − | Make sure you have no outstanding changes. You can check that you are working with a clean checkout by using <code>hg diff</code> and use <code>hg revert --all</code> to get there if you're willing to lose all the current changes.
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| − | To make a new patch, use the command:
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| − | hg qnew PATCHNAME
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| − | To see what patch is currently on top:
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| − | hg qtop
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| − | To add changes to a patch, edit a file and do:
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| − | hg qrefresh
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| − | This updates your patch with all your changes. You can change the "commit" message on a patch at the same time you use qrefresh. To see what changes your patch has, use:
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| − | hg export qtip
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| − | To see what changes you have made that aren't saved in a patch:
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| − | hg diff
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| − | To see what changes your patches has, plus all changes that aren't saved in a patch:
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| − | hg qdiff
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| − | === Applying and unapplying patches ===
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| − | Patches are a stack of patches. Using <code>hg qnew</code> to create a new patch will place it on the top of the stack. You can unapply the patch at the top of the stack (and remove it from the stack) using <code>hg qpop</code>, and apply a patch with <code>hg qpush</code>.
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| − | See also: [[Dev Patches]]
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| − | === Updating your code ===
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| − | Add this alias to your <code>~/.bash_profile</code> and <code>source ~/.bashprofile</code>:
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| − | alias dwupdate='hg -R $LJHOME/cvs/dw-free qpop -a && \
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| − | hg -R $LJHOME/cvs/dw-free update && \
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| − | hg -R $LJHOME/cvs/dw-free qpush -a'
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| − | === Making a patchfile ===
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| − | You can also use qdiff to make a patch file:
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| − | hg qdiff > PATCHFILE
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| − | Suggested patchfile name should be something along the lines of bug#_desc.patch, like bug56_titlefix.patch.
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| − | === Further MQ References ===
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| − | * [http://hgbook.red-bean.com/hgbookch12.html#x16-26700012 Managing change with Mercurial Queues]
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| − | * [http://developer.mozilla.org/en/Mercurial_Queues Mercurial Queues]
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| − | == Committing changes ==
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| − | Only <ljuser>xb95</ljuser> and a few other developers can do this.
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| − | For details, see [[Dev Committing Guidelines]]
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| − | [[Category: Development]]
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