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git-p4 - Perforce <-> Git converter using git-fast-import
 
Usage
=====
 
git-p4 supports two main modes: Importing from Perforce to a Git repository is
done using "git-p4 sync". Submitting changes from Git back to Perforce is
done using "git-p4 submit".
 
Importing
=========
 
The procedure is simple:
 
  mkdir repo-git
  cd repo-git
  git init
  git-p4 sync //path/in/your/perforce/depot
 
This will import the current head revision of the specified depot path into a
"p4" branch of your git repository. You can use the --branch=mybranch option
to use a different branch.
 
If you want to import the entire history of a given depot path just use
 
  git-p4 sync //path/in/depot@all
 
To achieve optimal compression you may want to run 'git repack -a -d -f' after
a big import. This may take a while.
 
Support for Perforce integrations is still work in progress. Don't bother
trying it unless you want to hack on it :)
 
 
Incremental Imports
===================
 
After an initial import you can easily synchronize your git repository with
newer changes from the Perforce depot by just calling
 
  git-p4 sync
 
in your git repository.
 
It is recommended to run 'git repack -a -d -f' from time to time when using
incremental imports to optimally combine the individual git packs that each
incremental import creates through the use of git-fast-import.
 
Submitting
==========
 
git-p4 has EXPERIMENTAL support for submitting changes from a git repository
back to a Perforce depot. This requires a Perforce checkout separate to your
git repository. This is the basic procedure:
 
    cd path/to/your/perforce/checkout
    git-p4 submit --git-dir=/path/to/your/git/repository
 
This will create a temporary git branch, use git-rev-list to find out which git
commits are in your current branch but not in the "origin" branch. You can
override the name of the "origin" branch by using the --origin=mybranch option.
The "origin" branch has to be the branch populated with git-p4's sync
operation.
 
After some preparations (which might take a while) git-p4 enters a loop where
it will first show a Perforce submit template and a diff of the change to
apply.  After quitting the pager with 'q' git-p4 asks for confirmation for
issuing the "p4 submit" command and also gives you the option of editing the
submit template using "e".
 
If a submit fails you may have to "p4 resolve" and submit manually. You can
continue importing the remaining changes with
 
  git-p4 submit --git-dir=/path/to/your/git/repository --continue
 
After submitting you should sync your origin branch from Perforce using
git-p4's sync command.