class Git::Branches

Collection of all Git branches in a repository

Wraps both local and remote-tracking branches and provides filtering, enumeration, and name-based lookup.

@example Enumerate all branches

branches = repo.branches
branches.each { |b| puts b.name }

@api public

Public Class Methods

new (base)

Source

# File lib/git/branches.rb, line 27
def initialize(base)
  @branches = {}
  @lookup = {}

  @base = base

  branch_repository.branch_list.each do |branch_info|
    branch = Git::Branch.new(base, branch_info)

    @branches[branch_info.refname] = branch
    index_branch_lookup(branch, refname: branch_info.refname)
  end
end

Creates a new Branches collection populated from the given repository

@param base [Git::Repository] the repository to enumerate

branches from

@return [void]

@raise [Git::FailedError] if git exits with a non-zero exit status

Public Instance Methods

[] (branch_name)

Source

# File lib/git/branches.rb, line 116
def [](branch_name)
  @lookup[branch_name.to_s]
end

Returns the branch with the given name

Supports short names (‘’main’‘), remote-qualified names (`’working/master’‘), and full refspec names (`’remotes/working/master’‘).

@example Look up a branch by short name

repo.branches['main']

@example Look up a remote-tracking branch

repo.branches['working/master']

@param branch_name [#to_s] the name of the branch to retrieve

@return [Git::Branch, nil] the matching branch, or ‘nil` if not found

each (&)

Source

# File lib/git/branches.rb, line 96
def each(&)
  @branches.values.each(&)
end

Iterates over every branch in the collection

@overload each

@example Get an enumerator over all branches
  enum = repo.branches.each

@return [Enumerator<Git::Branch>] an enumerator over all branches

@overload each(&block)

@example Print every branch name
  repo.branches.each { |b| puts b.name }

@return [Array<Git::Branch>] the full list of branches

@yield [branch] passes each branch to the block

@yieldparam branch [Git::Branch] a branch in the repository

@yieldreturn [void]

local ()

Source

# File lib/git/branches.rb, line 48
def local
  reject(&:remote)
end

Returns all local (non-remote-tracking) branches

@example List local branch names

repo.branches.local.map(&:name)

@return [Array<Git::Branch>] the local branches

remote ()

Source

# File lib/git/branches.rb, line 59
def remote
  self.select(&:remote)
end

Returns all remote-tracking branches

@example List remote branch names

repo.branches.remote.map(&:name)

@return [Array<Git::Branch>] the remote-tracking branches

size ()

Source

# File lib/git/branches.rb, line 70
def size
  @branches.size
end

Returns the number of branches in the collection

@example Count all branches

repo.branches.size  # => 3

@return [Integer] the total number of branches

to_s ()

Source

# File lib/git/branches.rb, line 127
def to_s
  out = +''
  @branches.each_value do |b|
    out << (b.current ? '* ' : '  ') << b.to_s << "\n"
  end
  out
end

Returns a string listing all branches, prefixed with ‘*` for the current branch

@example Display all branches

puts repo.branches.to_s

@return [String] a formatted branch listing

Private Instance Methods

branch_repository ()

Source

# File lib/git/branches.rb, line 141
def branch_repository
  @base
end

@return [Git::Repository] the repository used to enumerate branches

@api private

index_branch_lookup (branch, refname:)

Source

# File lib/git/branches.rb, line 156
def index_branch_lookup(branch, refname:)
  @lookup[refname] ||= branch
  @lookup[branch.full] ||= branch

  return unless branch.full.start_with?('remotes/')

  # Mirror git compatibility: allow omitting a leading "remotes/".
  @lookup[branch.full.delete_prefix('remotes/')] ||= branch
end

Indexes all supported lookup keys for a branch without mutating the canonical ‘@branches` collection used by enumeration

@param branch [Git::Branch] the branch to index

@param refname [String] the full refname key to use for primary lookup

@return [void]

@api private