Git Component

This component helps interacting with the Git command line tool and the Git-Flow extension.

This tool is built using the Symfony Process Component (https://github.com/symfony/Process) but can be used in any PHP projects. The requirements are specified in the composer.json file:

• PHP version >=5.4
• symfony/process version >= 2.4
• symfony/filesystem version >= 2.2 (only for running the tests in development environment)
• git
• git-flow (required only for using the Git-Flow wrapper extension)

Installation

This component is available for installation through composer. From command line run:

$ composer require "ggioffreda/git" "~0.1"

Or add the following to your composer.json in the require section:

"require": {
    ... other requirements ...,
    "ggioffreda/git": "~0.1"
}

For more information check the project page on Packagist.

Usage - Git

The list of shortcut and self-explanatory methods implemented for Git:

• init, initializes the Git repository if not already initialized;
• config, sets or requests a configuration variable, when getting it you need to call the output method afterward to get the value;
• add, adds the files matching the provided pattern to the next commit;
• rm, removes the files matching the provided pattern to the next commit;
• mv, moves the file from origin to destination;
• diff, returns the output of the diff command on the whole project or for the specified pattern;
• show, returns the output of the show command for the specified object;
• commit, commits the changes to the current branch;
• branchAdd, creates a new branch with the given name;
• branchDelete, deletes the branch with the given name;
• branchList, lists the branches of the Git repository;
• checkout, checks out the required entity (can be anything allowed by Git, like a branch, a file or an hash);
• status, returns the output of the Git status command on the Git project;
• merge, merges the given branch to the current one;
• log, returns the output of the Git log command, by default the last 10 commits;
• push, pushes the commits to the remote repository;
• pull, pulls the commits from the remote repository;
• fetch, fetches the remote branches;
• remoteAdd, adds a remote;
• remoteRename, renames a remote;
• remoteRemove, removes a remote;
• remoteSetHead, sets the HEAD for a remote;
• remoteSetBranches, set the branches for a remote;
• remoteGetUrl, get the URL of a remote;
• remoteSetUrl, set the URL of a remote;
• remoteShow, shows information of a remote;
• remotePrune, prunes a remote;
• flow, access the git-flow wrapper extension.

List of other methods provided for Git:

• run, allows you to run any custom Git command you could think of;
• getConfiguration, return an array of Git configuration key and values;
• getBranches, returns an array of branches with related last commit hash and message;
• getStatuses, returns an array of non commited changes with a status each (in "porcelain" Git flavour);
• getLogs, returns the array of last commits with related messages, you can specify the size of the array;
• output, returns the output of the last command executed on the Git project;
• history, returns the array of all the commands and related outputs executed on the Git project.

List of static methods and basic features for Git:

• create (static), returns a new instance for the specified path and Git executable (optional);
• cloneRemote (static), returns a new instance cloning the remote repository in the local path;
• getPath, returns the path of the Git project;
• getDefaults, returns the default options for the shortcut method (see above the list of shortcut methods);
• setDefaults, sets the default options for the shortcut method (see above the list of shortcut methods).

When the execution of a Git command fails because of wrong options or for unknown reasons the any method can return a Gioffreda\Component\Git\Exception\GitProcessException, while if the error happens parsing the output of the command the exception will be of Gioffreda\Component\Git\Exception\GitParsingOutputException. Both share the same parent so they can be caught at once if needed Gioffreda\Component\Git\Exception\GitException.

Usage - GitFlow

List of shortcut and self-explanatory methods implemented for Git-Flow:

• init, initialized git-flow for the Git project with the default values, to use custom values call the run method instead providing the desired options;
• featureList, lists existing features;
• featureStart, starts a new feature, optionally basing it on another base instead of "develop";
• featureFinish, finishes the feature;
• featurePublish, starts sharing the feature;
• featureTrack, starts tracking the feature;
• featureDiff, shows all changes that are not in "develop";
• featureRebase, rebases on "develop";
• featureCheckout, switches to the feature branch;
• featurePull, pull the feature from the remote repository;
• releaseList, lists existing releases;
• releaseStart, start a new release;
• releaseFinish, finishes the release;
• releasePublish, starts sharing the release;
• releaseTrack, starts tracking the release;
• hotfixList, lists existing hotfixes;
• hotfixStart, start a new hotfix, optionally basing it on a different base than "master";
• hotfixFinish, finishes the hotfix;
• supportList, lists existing support branches;
• supportStart, starts a new support branch;
• getConfiguration, returns the git-flow current configuration;
• getVersion, returns the git-flow current version;
• run, allows you to run any custom command through git-flow;
• output, returns the output for the last executed command, it's an alias for the parent Git::output() method;
• extend (static), return the git-flow extension wrapper for the given Git project.

Beware if the git-flow extension is not available all the above methods (but output and extend) will throw an exception.

Example

For a real life example check this out: Git-Guardian. It's a command line interface for backing up locally all your remote repositories from either GitHub or BitBucket.

The following example shows how to use the component. All non getter methods not used to read properties or command output implement a fluent interface to improve readability:

<?php

namespace MyNamespace;

use Gioffreda\Component\Git\Git;

class MyJob
{

    public function doSomething($remoteUri, $localPath)
    {
        // cloning a remote repository
        $git = Git::cloneRemote($remoteUri, $localPath);
        // switches to the develop branch
        $git->checkout('develop');

        // your logic here, change some files
        // ...

        $git
            // adds all the files
            ->add('.')
            // commits the changes to the develop branch
            ->commit('Changed some files')
            // switches to the master branch
            ->checkout('master')
            // merges the develop branch into the master branch
            ->merge('develop')
            // commits the changes into the master branch
            ->commit('Merged the changes into master.')
            // pushes the changes to the remote repository using a custom command line
            ->run(['push', '--all'])
        ;

        // or you can use a local one even if not initialized yet
        // new Git project using a custom executable
        $git = Git::create($localPath, '/usr/local/custom/git');
        $git
            // this will initialize the Git project if not initialized already
            ->init()
            // adds all the files in the folder ./src
            ->add('./src')
            // commits the changes
            ->commit('Initial commit (only sources).')
        ;

        // retrieves the last commits hashes and messages
        $logs = $git->getLogs();
        // retrieves the list of branches with latest commit hash and message
        $branches = $git->getBranches()

        // using git-flow, initializing it first
        $git->flow()->init();
        // starts a new feature
        $git->flow()->featureStart('test1');

        // your logic here, change some files
        // ...

        $git
            // mark the changes so they'll be committed
            ->add('.')
            // commits the the changes
            ->commit('feature finished')
            // finishes the feature
            ->flow()->featureFinish('test1')
        ;
    }

}

Resources

You can run the unit tests with the following command (requires phpunit):

$ cd path/to/Gioffreda/Component/Git/
$ composer.phar install
$ phpunit

License

This software is distributed under the following licenses: GNU GPL v2, GNU GPL v3 and MIT License. You may choose the one that best suits your needs.