zedtux/ruby-git-ce

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README.md

Summary

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# Git Library for Ruby

Library for using Git in Ruby.

# ruby-git-ce

The ruby-git Community Edition is a fork of the awesome but incomplete and
unmaintained ruby-git gem.

The aim of this fork is to accept people's pull requests, then allow to accept
other pull requests, and so on.

With this principle, when I'll not be available next time, this repository will
not be abandoned, and people can still rely on it.
I want to be sure this little piece of love, that is this library, will never
stop growing, even when I'll be on something else.

BTW there will be NO stupid bots closing your PRs ! (Who the hell is the stupid
guy who invented this absurd concept ... 🤦‍)

If this kind of ways is working fine, that would be great to creation an
organisation to group those Community Editions all together.

Anyway, it's a new concept I'd like to try ! 😉

## Homepage

Git public hosting of the project source code is at:

http://github.com/zedtux/ruby-git-ce

## Install

You can install Ruby/Git like this:

    $ sudo gem install git-ce

## Code Status

* [![Build Status](https://travis-ci.org/zedtux/ruby-git-ce.svg?branch=master)](https://travis-ci.org/zedtux/ruby-git-ce)
* [![Code Climate](https://codeclimate.com/github/zedtux/ruby-git-ce.png)](https://codeclimate.com/github/zedtux/ruby-git-ce)
* [![Gem Version](https://badge.fury.io/rb/git-ce.png)](http://badge.fury.io/rb/git-ce)

## Major Objects

**Git::Base** - The object returned from a `Git.open` or `Git.clone`.
Most major actions are called from this object.

**Git::Object** - The base object for your tree, blob and commit objects,
returned from `@git.gtree` or `@git.object` calls.  the `Git::AbstractObject`
will have most of the calls in common for all those objects.

**Git::Diff** - returns from a `@git.diff` command.  It is an Enumerable that
returns `Git::Diff:DiffFile` objects from which you can get per file patches and
insertion/deletion statistics.  You can also get total statistics from the
Git::Diff object directly.

**Git::Status** - returns from a `@git.status` command.  It is an Enumerable
that returns `Git:Status::StatusFile` objects for each object in git, which
includes files in the working directory, in the index and in the repository.
Similar to running 'git status' on the command line to determine untracked and
changed files.

**Git::Branches** - Enumerable object that holds `Git::Branch objects`.
You can call .local or .remote on it to filter to just your local or remote
branches.

**Git::Remote**- A reference to a remote repository that is tracked by this
repository.

**Git::Log** - An Enumerable object that references all the
`Git::Object::Commit` objects that encompass your log query, which can be
constructed through methods on the `Git::Log object`,
like:

 `@git.log(20).object("some_file").since("2 weeks ago").between('v2.6', 'v2.7').each { |commit| [block] }`

## Examples

Here are a bunch of examples of how to use the Ruby/Git package.

Ruby < 1.9 will require rubygems to be loaded.

```ruby
    require 'rubygems'
```

Require the 'git' gem.
```ruby
    require 'git'
```

Git env config

```ruby
  Git.configure do |config|
    # If you want to use a custom git binary
    config.binary_path = '/git/bin/path'

    # If you need to use a custom SSH script
    config.git_ssh = '/path/to/ssh/script'
  end

```


Here are the operations that need read permission only.

```ruby
    g = Git.open(working_dir, :log => Logger.new(STDOUT))

    g.index
    g.index.readable?
    g.index.writable?
    g.repo
    g.dir

    g.log   # returns array of Git::Commit objects
    g.log.since('2 weeks ago')
    g.log.between('v2.5', 'v2.6')
    g.log.each {|l| puts l.sha }
    g.gblob('v2.5:Makefile').log.since('2 weeks ago')

    g.object('HEAD^').to_s  # git show / git rev-parse
    g.object('HEAD^').contents
    g.object('v2.5:Makefile').size
    g.object('v2.5:Makefile').sha

    g.gtree(treeish)
    g.gblob(treeish)
    g.gcommit(treeish)


    commit = g.gcommit('1cc8667014381')

    commit.gtree
    commit.parent.sha
    commit.parents.size
    commit.author.name
    commit.author.email
    commit.author.date.strftime("%m-%d-%y")
    commit.committer.name
    commit.date.strftime("%m-%d-%y")
    commit.message

    tree = g.gtree("HEAD^{tree}")

    tree.blobs
    tree.subtrees
    tree.children # blobs and subtrees

    g.revparse('v2.5:Makefile')

    g.branches # returns Git::Branch objects
    g.branches.local
    g.branches.remote
    g.branches[:master].gcommit
    g.branches['origin/master'].gcommit

    g.grep('hello')  # implies HEAD
    g.blob('v2.5:Makefile').grep('hello')
    g.tag('v2.5').grep('hello', 'docs/')
    g.describe()
    g.describe('0djf2aa')
    g.describe('HEAD', {:all => true, :tags => true})

    g.diff(commit1, commit2).size
    g.diff(commit1, commit2).stats
    g.diff(commit1, commit2).name_status
    g.gtree('v2.5').diff('v2.6').insertions
    g.diff('gitsearch1', 'v2.5').path('lib/')
    g.diff('gitsearch1', @git.gtree('v2.5'))
    g.diff('gitsearch1', 'v2.5').path('docs/').patch
    g.gtree('v2.5').diff('v2.6').patch

    g.gtree('v2.5').diff('v2.6').each do |file_diff|
       puts file_diff.path
       puts file_diff.patch
       puts file_diff.blob(:src).contents
    end

    g.config('user.name')  # returns 'Scott Chacon'
    g.config # returns whole config hash

    g.tags # returns array of Git::Tag objects

    g.show()
    g.show('HEAD')
    g.show('v2.8', 'README.md')

    # returns a hash containing the available references of the repo.
    Git.ls_remote('https://github.com/zedtux/ruby-git-ce.git')
    Git.ls_remote('/path/to/local/repo')
    Git.ls_remote() # same as Git.ls_remote('.')

```

And here are the operations that will need to write to your git repository.

```ruby
      g = Git.init
       Git.init('project')
       Git.init('/home/schacon/proj',
        { :repository => '/opt/git/proj.git',
           :index => '/tmp/index'} )

     g = Git.clone(URI, NAME, :path => '/tmp/checkout')
     g.config('user.name', 'Scott Chacon')
     g.config('user.email', 'email@email.com')

     g.add                                   # git add -- "."
     g.add(:all=>true)                       # git add --all -- "."
     g.add('file_path')                      # git add -- "file_path"
     g.add(['file_path_1', 'file_path_2'])   # git add -- "file_path_1" "file_path_2"

     g.remove()                                    # git rm -f -- "."
     g.remove('file.txt')                        # git rm -f -- "file.txt"
     g.remove(['file.txt', 'file2.txt'])        # git rm -f -- "file.txt" "file2.txt"
     g.remove('file.txt', :recursive => true)     # git rm -f -r -- "file.txt"
     g.remove('file.txt', :cached => true)        # git rm -f --cached -- "file.txt"

     g.commit('message')
     g.commit_all('message')

     g = Git.clone(repo, 'myrepo')
     g.chdir do
      new_file('test-file', 'blahblahblah')
      g.status.changed.each do |file|
       puts file.blob(:index).contents
      end
     end

     g.reset # defaults to HEAD
     g.reset_hard(Git::Commit)

     g.branch('new_branch') # creates new or fetches existing
     g.branch('new_branch').checkout
     g.branch('new_branch').delete
     g.branch('existing_branch').checkout
     g.branch('master').contains?('existing_branch')

     g.checkout('new_branch')
     g.checkout(g.branch('new_branch'))

     g.branch(name).merge(branch2)
     g.branch(branch2).merge  # merges HEAD with branch2

     g.branch(name).in_branch(message) { # add files }  # auto-commits
     g.merge('new_branch')
     g.merge('origin/remote_branch')
     g.merge(g.branch('master'))
     g.merge([branch1, branch2])

     r = g.add_remote(name, uri)  # Git::Remote
     r = g.add_remote(name, Git::Base)  # Git::Remote

     g.remotes  # array of Git::Remotes
     g.remote(name).fetch
     g.remote(name).remove
     g.remote(name).merge
     g.remote(name).merge(branch)

     g.fetch
     g.fetch(g.remotes.first)
     g.fetch('origin', {:ref => 'some/ref/head'} )

     g.pull
     g.pull(Git::Repo, Git::Branch) # fetch and a merge

     g.add_tag('tag_name') # returns Git::Tag
     g.add_tag('tag_name', 'object_reference')
     g.add_tag('tag_name', 'object_reference', {:options => 'here'})
     g.add_tag('tag_name', {:options => 'here'})

     Options:
       :a | :annotate
       :d
       :f
       :m | :message
       :s

     g.delete_tag('tag_name')

     g.repack

     g.push
     g.push(g.remote('name'))
```

Some examples of more low-level index and tree operations

```ruby
     g.with_temp_index do

       g.read_tree(tree3) # calls self.index.read_tree
       g.read_tree(tree1, :prefix => 'hi/')

       c = g.commit_tree('message')
       # or #
       t = g.write_tree
       c = g.commit_tree(t, :message => 'message', :parents => [sha1, sha2])

       g.branch('branch_name').update_ref(c)
       g.update_ref(branch, c)

       g.with_temp_working do # new blank working directory
         g.checkout
         g.checkout(another_index)
         g.commit # commits to temp_index
       end
     end

     g.set_index('/path/to/index')


     g.with_index(path) do
       # calls set_index, then switches back after
     end

     g.with_working(dir) do
     # calls set_working, then switches back after
     end

     g.with_temp_working(dir) do
       g.checkout_index(:prefix => dir, :path_limiter => path)
       # do file work
       g.commit # commits to index
     end
```

## License

licensed under MIT License Copyright (c) 2008  Scott Chacon. See LICENSE for
further details.