Class: Git::Lib

Inherits:
Object
  • Object
show all
Defined in:
lib/git/lib.rb

Instance Method Summary collapse

Constructor Details

#initialize(base = nil, logger = nil) ⇒ Lib

Returns a new instance of Lib.



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# File 'lib/git/lib.rb', line 10

def initialize(base = nil, logger = nil)
  @git_dir = nil
  @git_index_file = nil
  @git_work_dir = nil
  @path = nil
  
  if base.is_a?(Git::Base)
    @git_dir = base.repo.path
    @git_index_file = base.index.path if base.index
    @git_work_dir = base.dir.path if base.dir
  elsif base.is_a?(Hash)
    @git_dir = base[:repository]
    @git_index_file = base[:index] 
    @git_work_dir = base[:working_directory]
  end
  @logger = logger
end

Instance Method Details

#add(path = '.') ⇒ Object 



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# File 'lib/git/lib.rb', line 394

def add(path = '.')
  arr_opts = ['--']
  if path.is_a?(Array)
    arr_opts += path
  else
    arr_opts << path
  end
  command('add', arr_opts)
end

#apply(patch_file) ⇒ Object 



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# File 'lib/git/lib.rb', line 432

def apply(patch_file)
  arr_opts = []
  arr_opts << '--' << patch_file if patch_file
  command('apply', arr_opts)
end

#apply_mail(patch_file) ⇒ Object 



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# File 'lib/git/lib.rb', line 438

def apply_mail(patch_file)
  arr_opts = []
  arr_opts << '--' << patch_file if patch_file
  command('am', arr_opts)
end

#archive(sha, file = nil, opts = {}) ⇒ Object

creates an archive file

options

:format  (zip, tar)
:prefix
:remote
:path



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# File 'lib/git/lib.rb', line 626

def archive(sha, file = nil, opts = {})
  opts[:format] ||= 'zip'
  
  if opts[:format] == 'tgz'
    opts[:format] = 'tar' 
    opts[:add_gzip] = true
  end
  
  file ||= Tempfile.new('archive').path
  
  arr_opts = []
  arr_opts << "--format=#{opts[:format]}" if opts[:format]
  arr_opts << "--prefix=#{opts[:prefix]}" if opts[:prefix]
  arr_opts << "--remote=#{opts[:remote]}" if opts[:remote]
  arr_opts << sha
  arr_opts << '--' << opts[:path] if opts[:path]
  command('archive', arr_opts, true, (opts[:add_gzip] ? '| gzip' : '') + " > #{escape file}")
  return file
end

#branch_current ⇒ Object 



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# File 'lib/git/lib.rb', line 213

def branch_current
  branches_all.select { |b| b[1] }.first[0] rescue nil
end

#branch_delete(branch) ⇒ Object 



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# File 'lib/git/lib.rb', line 481

def branch_delete(branch)
  command('branch', ['-D', branch])
end

#branch_new(branch) ⇒ Object 



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# File 'lib/git/lib.rb', line 477

def branch_new(branch)
  command('branch', branch)
end

#branches_all ⇒ Object 



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# File 'lib/git/lib.rb', line 197

def branches_all
  arr = []
  command_lines('branch', '-a').each do |b| 
    current = (b[0, 2] == '* ')
    arr << [b.gsub('* ', '').strip, current]
  end
  arr
end

#change_head_branch(branch_name) ⇒ Object 



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# File 'lib/git/lib.rb', line 193

def change_head_branch(branch_name)
  command('symbolic-ref', ['HEAD', "refs/heads/#{branch_name}"])
end

#checkout(branch, opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 485

def checkout(branch, opts = {})
  arr_opts = []
  arr_opts << '-f' if opts[:force]
  arr_opts << '-b' << opts[:new_branch] if opts[:new_branch]
  arr_opts << branch
  
  command('checkout', arr_opts)
end

#checkout_file(version, file) ⇒ Object 



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# File 'lib/git/lib.rb', line 494

def checkout_file(version, file)
  arr_opts = []
  arr_opts << version
  arr_opts << file
  command('checkout', arr_opts)
end

#checkout_index(opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 609

def checkout_index(opts = {})
  arr_opts = []
  arr_opts << "--prefix=#{opts[:prefix]}" if opts[:prefix]
  arr_opts << "--force" if opts[:force]
  arr_opts << "--all" if opts[:all]
  arr_opts << '--' << opts[:path_limiter] if opts[:path_limiter].is_a? String

  command('checkout-index', arr_opts)
end

#clone(repository, name, opts = {}) ⇒ Object

tries to clone the given repo

returns :repository (if bare)

{:working_directory} otherwise

accepts options:

:remote:: name of remote (rather than 'origin')
:bare::   no working directory
:depth::  the number of commits back to pull

TODO - make this work with SSH password or auth_key



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# File 'lib/git/lib.rb', line 44

def clone(repository, name, opts = {})
  @path = opts[:path] || '.'
  clone_dir = opts[:path] ? File.join(@path, name) : name
  
  arr_opts = []
  arr_opts << "--bare" if opts[:bare]
  arr_opts << "-o" << opts[:remote] if opts[:remote]
  arr_opts << "--depth" << opts[:depth].to_i if opts[:depth] && opts[:depth].to_i > 0

  arr_opts << '--'
  arr_opts << repository
  arr_opts << clone_dir
  
  command('clone', arr_opts)
  
  opts[:bare] ? {:repository => clone_dir} : {:working_directory => clone_dir}
end

#commit(message, opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 417

def commit(message, opts = {})
  arr_opts = ['-m', message]
  arr_opts << '-a' if opts[:add_all]
  arr_opts << '--allow-empty' if opts[:allow_empty]
  arr_opts << "--author" << opts[:author] if opts[:author]
  command('commit', arr_opts)
end

#commit_data(sha) ⇒ Object

returns useful array of raw commit object data



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# File 'lib/git/lib.rb', line 120

def commit_data(sha)
  sha = sha.to_s
  cdata = command_lines('cat-file', ['commit', sha])
  process_commit_data(cdata, sha, 0)
end

#commit_tree(tree, opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 592

def commit_tree(tree, opts = {})
  opts[:message] ||= "commit tree #{tree}"
  t = Tempfile.new('commit-message')
  t.write(opts[:message])
  t.close
  
  arr_opts = []
  arr_opts << tree
  arr_opts << '-p' << opts[:parent] if opts[:parent]
  arr_opts += [opts[:parents]].map { |p| ['-p', p] }.flatten if opts[:parents]
  command('commit-tree', arr_opts, true, "< #{escape t.path}")
end

#config_get(name) ⇒ Object 



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# File 'lib/git/lib.rb', line 322

def config_get(name)
  do_get = lambda do
    command('config', ['--get', name])
  end

  if @git_dir
    Dir.chdir(@git_dir, &do_get)
  else
    build_list.call
  end
end

#config_list ⇒ Object 



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# File 'lib/git/lib.rb', line 338

def config_list
  build_list = lambda do |path|
    parse_config_list command_lines('config', ['--list'])
  end
  
  if @git_dir
    Dir.chdir(@git_dir, &build_list)
  else
    build_list.call
  end
end

#config_remote(name) ⇒ Object 



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# File 'lib/git/lib.rb', line 312

def config_remote(name)
  hsh = {}
  config_list.each do |key, value|
    if /remote.#{name}/.match(key)
      hsh[key.gsub("remote.#{name}.", '')] = value
    end
  end
  hsh
end

#config_set(name, value) ⇒ Object

WRITE COMMANDS ##



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# File 'lib/git/lib.rb', line 386

def config_set(name, value)
  command('config', [name, value])
end

#conflicts ⇒ Object

:yields: file, your, their



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# File 'lib/git/lib.rb', line 516

def conflicts # :yields: file, your, their
  self.unmerged.each do |f|
    your = Tempfile.new("YOUR-#{File.basename(f)}").path
    command('show', ":2:#{f}", true, "> #{escape your}") 

    their = Tempfile.new("THEIR-#{File.basename(f)}").path
    command('show', ":3:#{f}", true, "> #{escape their}") 
    yield(f, your, their)
  end
end

#current_command_version ⇒ Object

returns the current version of git, as an Array of Fixnums.



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# File 'lib/git/lib.rb', line 647

def current_command_version
  output = command('version', [], false)
  version = output[/\d+\.\d+(\.\d+)+/]
  version.split('.').collect {|i| i.to_i}
end

#diff_files ⇒ Object

compares the index and the working directory



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# File 'lib/git/lib.rb', line 272

def diff_files
  hsh = {}
  command_lines('diff-files').each do |line|
    (info, file) = line.split("\t")
    (mode_src, mode_dest, sha_src, sha_dest, type) = info.split
    hsh[file] = {:path => file, :mode_file => mode_src.to_s[1, 7], :mode_index => mode_dest, 
                  :sha_file => sha_src, :sha_index => sha_dest, :type => type}
  end
  hsh
end

#diff_full(obj1 = 'HEAD', obj2 = nil, opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 242

def diff_full(obj1 = 'HEAD', obj2 = nil, opts = {})
  diff_opts = ['-p']
  diff_opts << obj1
  diff_opts << obj2 if obj2.is_a?(String)
  diff_opts << '--' << opts[:path_limiter] if opts[:path_limiter].is_a? String

  command('diff', diff_opts)
end

#diff_index(treeish) ⇒ Object

compares the index and the repository



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# File 'lib/git/lib.rb', line 284

def diff_index(treeish)
  hsh = {}
  command_lines('diff-index', treeish).each do |line|
    (info, file) = line.split("\t")
    (mode_src, mode_dest, sha_src, sha_dest, type) = info.split
    hsh[file] = {:path => file, :mode_repo => mode_src.to_s[1, 7], :mode_index => mode_dest, 
                  :sha_repo => sha_src, :sha_index => sha_dest, :type => type}
  end
  hsh
end

#diff_stats(obj1 = 'HEAD', obj2 = nil, opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 251

def diff_stats(obj1 = 'HEAD', obj2 = nil, opts = {})
  diff_opts = ['--numstat']
  diff_opts << obj1
  diff_opts << obj2 if obj2.is_a?(String)
  diff_opts << '--' << opts[:path_limiter] if opts[:path_limiter].is_a? String

  hsh = {:total => {:insertions => 0, :deletions => 0, :lines => 0, :files => 0}, :files => {}}
  
  command_lines('diff', diff_opts).each do |file|
    (insertions, deletions, filename) = file.split("\t")
    hsh[:total][:insertions] += insertions.to_i
    hsh[:total][:deletions] += deletions.to_i
    hsh[:total][:lines] = (hsh[:total][:deletions] + hsh[:total][:insertions])
    hsh[:total][:files] += 1
    hsh[:files][filename] = {:insertions => insertions.to_i, :deletions => deletions.to_i}
  end
        
  hsh
end

#fetch(remote) ⇒ Object 



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# File 'lib/git/lib.rb', line 556

def fetch(remote)
  command('fetch', remote)
end

#full_log_commits(opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 80

def full_log_commits(opts = {})
  arr_opts = ['--pretty=raw']
  arr_opts << "-#{opts[:count]}" if opts[:count]
  arr_opts << "--skip=#{opts[:skip]}" if opts[:skip]
  arr_opts << "--since=#{opts[:since]}" if opts[:since].is_a? String
  arr_opts << "--until=#{opts[:until]}" if opts[:until].is_a? String
  arr_opts << "--grep=#{opts[:grep]}" if opts[:grep].is_a? String
  arr_opts << "--author=#{opts[:author]}" if opts[:author].is_a? String
  arr_opts << "#{opts[:between][0].to_s}..#{opts[:between][1].to_s}" if (opts[:between] && opts[:between].size == 2)
  arr_opts << opts[:object] if opts[:object].is_a? String
  arr_opts << '--' << opts[:path_limiter] if opts[:path_limiter].is_a? String
  
  full_log = command_lines('log', arr_opts, true)
  process_commit_data(full_log)
end

#full_tree(sha) ⇒ Object 



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# File 'lib/git/lib.rb', line 185

def full_tree(sha)
  command_lines('ls-tree', ['-r', sha])
end

#gc ⇒ Object 



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# File 'lib/git/lib.rb', line 576

def gc
  command('gc', ['--prune', '--aggressive', '--auto'])
end

#global_config_get(name) ⇒ Object 



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# File 'lib/git/lib.rb', line 334

def global_config_get(name)
  command('config', ['--global', '--get', name], false)
end

#global_config_list ⇒ Object 



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# File 'lib/git/lib.rb', line 350

def global_config_list
  parse_config_list command_lines('config', ['--global', '--list'], false)
end

#global_config_set(name, value) ⇒ Object 



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# File 'lib/git/lib.rb', line 390

def global_config_set(name, value)
  command('config', ['--global', name, value], false)
end

#grep(string, opts = {}) ⇒ Object

returns hash

tree-ish

[[line_no, match], [line_no, match2]]

tree-ish

[[line_no, match], [line_no, match2]]



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# File 'lib/git/lib.rb', line 221

def grep(string, opts = {})
  opts[:object] ||= 'HEAD'

  grep_opts = ['-n']
  grep_opts << '-i' if opts[:ignore_case]
  grep_opts << '-v' if opts[:invert_match]
  grep_opts << '-e'
  grep_opts << string
  grep_opts << opts[:object] if opts[:object].is_a?(String)
  grep_opts << '--' << opts[:path_limiter] if opts[:path_limiter].is_a? String

  hsh = {}
  command_lines('grep', grep_opts).each do |line|
    if m = /(.*)\:(\d+)\:(.*)/.match(line)        
      hsh[m[1]] ||= []
      hsh[m[1]] << [m[2].to_i, m[3]] 
    end
  end
  hsh
end

#ignored_files ⇒ Object 



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# File 'lib/git/lib.rb', line 307

def ignored_files
  command_lines('ls-files', ['--others', '-i', '--exclude-standard'])
end

#init ⇒ Object 



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# File 'lib/git/lib.rb', line 28

def init
  command('init')
end

#list_files(ref_dir) ⇒ Object 



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# File 'lib/git/lib.rb', line 206

def list_files(ref_dir)
  dir = File.join(@git_dir, 'refs', ref_dir)
  files = []
  Dir.chdir(dir) { files = Dir.glob('**/*').select { |f| File.file?(f) } } rescue nil
  files
end

#log_commits(opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 66

def log_commits(opts = {})
  arr_opts = ['--pretty=oneline']
  arr_opts << "-#{opts[:count]}" if opts[:count]
  arr_opts << "--since=#{opts[:since]}" if opts[:since].is_a? String
  arr_opts << "--until=#{opts[:until]}" if opts[:until].is_a? String
  arr_opts << "--grep=#{opts[:grep]}" if opts[:grep].is_a? String
  arr_opts << "--author=#{opts[:author]}" if opts[:author].is_a? String
  arr_opts << "#{opts[:between][0].to_s}..#{opts[:between][1].to_s}" if (opts[:between] && opts[:between].size == 2)
  arr_opts << opts[:object] if opts[:object].is_a? String
  arr_opts << '--' << opts[:path_limiter] if opts[:path_limiter].is_a? String

  command_lines('log', arr_opts, true).map { |l| l.split.first }
end

#ls_files(location = nil) ⇒ Object 



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# File 'lib/git/lib.rb', line 295

def ls_files(location=nil)
  hsh = {}
  command_lines('ls-files', ['--stage', location]).each do |line|
    (info, file) = line.split("\t")
    (mode, sha, stage) = info.split
    file = eval(file) if file =~ /^\".*\"$/ # This takes care of quoted strings returned from git
    hsh[file] = {:path => file, :mode_index => mode, :sha_index => sha, :stage => stage}
  end
  hsh
end

#ls_tree(sha) ⇒ Object 



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# File 'lib/git/lib.rb', line 169

def ls_tree(sha)
  data = {'blob' => {}, 'tree' => {}}
  
  command_lines('ls-tree', sha).each do |line|
    (info, filenm) = line.split("\t")
    (mode, type, sha) = info.split
    data[type][filenm] = {:mode => mode, :sha => sha}
  end
  
  data
end

#meets_required_version? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/git/lib.rb', line 657

def meets_required_version?
  current_version  = self.current_command_version
  required_version = self.required_command_version

  return current_version[0] >= required_version[0] && 
         current_version[1] >= required_version[1] &&
         (current_version[2] ? current_version[2] >= required_version[2] : true) &&
         (current_version[3] ? current_version[3] >= required_version[3] : true)
end

#merge(branch, message = nil) ⇒ Object 



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# File 'lib/git/lib.rb', line 501

def merge(branch, message = nil)      
  arr_opts = []
  arr_opts << '-m' << message if message
  arr_opts += [branch]
  command('merge', arr_opts)
end

#mv(file1, file2) ⇒ Object 



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# File 'lib/git/lib.rb', line 181

def mv(file1, file2)
  command_lines('mv', ['--', file1, file2])
end

#namerev(string) ⇒ Object 



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# File 'lib/git/lib.rb', line 107

def namerev(string)
  command('name-rev', string).split[1]
end

#object_contents(sha, &block) ⇒ Object 



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# File 'lib/git/lib.rb', line 165

def object_contents(sha, &block)
  command('cat-file', ['-p', sha], &block)
end

#object_size(sha) ⇒ Object 



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# File 'lib/git/lib.rb', line 115

def object_size(sha)
  command('cat-file', ['-s', sha]).to_i
end

#object_type(sha) ⇒ Object 



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# File 'lib/git/lib.rb', line 111

def object_type(sha)
  command('cat-file', ['-t', sha])
end

#parse_config(file) ⇒ Object 



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# File 'lib/git/lib.rb', line 363

def parse_config(file)
  hsh = {}
  parse_config_list command_lines('config', ['--list', '--file', file], false)
  #hsh = {}
  #file = File.expand_path(file)
  #if File.file?(file)
  #  current_section = nil
  #  File.readlines(file).each do |line|
  #    if m = /\[(\w+)\]/.match(line)
  #      current_section = m[1]
  #    elsif m = /\[(\w+?) "(.*?)"\]/.match(line)
  #      current_section = "#{m[1]}.#{m[2]}"
  #    elsif m = /(\w+?) = (.*)/.match(line)
  #      key = "#{current_section}.#{m[1]}"
  #      hsh[key] = m[2] 
  #    end
  #  end
  #end
  #hsh
end

#parse_config_list(lines) ⇒ Object 



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# File 'lib/git/lib.rb', line 354

def parse_config_list(lines)
  hsh = {}
  lines.each do |line|
    (key, *values) = line.split('=')
    hsh[key] = values.join('=')
  end
  hsh
end

#process_commit_data(data, sha = nil, indent = 4) ⇒ Object 



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# File 'lib/git/lib.rb', line 126

def process_commit_data(data, sha = nil, indent = 4)
  in_message = false
        
  if sha
    hsh = {'sha' => sha, 'message' => '', 'parent' => []}
  else
    hsh_array = []        
  end
  data.each do |line|
    line = line.chomp
    if line == ''
      in_message = !in_message
    elsif in_message
      hsh['message'] << line[indent..-1] << "\n"
    else
      data = line.split
      key = data.shift
      value = data.join(' ')
      if key == 'commit' && value.match(/^[a-f0-9]{40}$/)
        sha = value
        hsh_array << hsh if hsh
        hsh = {'sha' => sha, 'message' => '', 'parent' => []}
      end
      if key == 'parent'
        hsh[key] << value
      else
        hsh[key] = value
      end
    end
  end
  
  if hsh_array
    hsh_array << hsh if hsh
    hsh_array
  else
    hsh
  end
end

#push(remote, branch = 'master', tags = false) ⇒ Object 



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# File 'lib/git/lib.rb', line 560

def push(remote, branch = 'master', tags = false)
  command('push', [remote, branch])
  command('push', ['--tags', remote]) if tags
end

#read_tree(treeish, opts = {}) ⇒ Object

reads a tree into the current index file



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# File 'lib/git/lib.rb', line 581

def read_tree(treeish, opts = {})
  arr_opts = []
  arr_opts << "--prefix=#{opts[:prefix]}" if opts[:prefix]
  arr_opts += [treeish]
  command('read-tree', arr_opts)
end

#remote_add(name, url, opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 527

def remote_add(name, url, opts = {})
  arr_opts = ['add']
  arr_opts << '-f' if opts[:with_fetch]
  arr_opts << '--'
  arr_opts << name
  arr_opts << url
  
  command('remote', arr_opts)
end

#remote_remove(name) ⇒ Object

this is documented as such, but seems broken for some reason i’ll try to get around it some other way later



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# File 'lib/git/lib.rb', line 539

def remote_remove(name)
  command('remote', ['rm', '--', name])
end

#remotes ⇒ Object 



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# File 'lib/git/lib.rb', line 543

def remotes
  command_lines('remote')
end

#remove(path = '.', opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 404

def remove(path = '.', opts = {})
  arr_opts = ['-f']  # overrides the up-to-date check by default
  arr_opts << ['-r'] if opts[:recursive]
  arr_opts << '--'
  if path.is_a?(Array)
    arr_opts += path
  else
    arr_opts << path
  end

  command('rm', arr_opts)
end

#repack ⇒ Object 



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# File 'lib/git/lib.rb', line 572

def repack
  command('repack', ['-a', '-d'])
end

#required_command_version ⇒ Object 



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# File 'lib/git/lib.rb', line 653

def required_command_version
  [1, 6, 0, 0]
end

#reset(commit, opts = {}) ⇒ Object 



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# File 'lib/git/lib.rb', line 425

def reset(commit, opts = {})
  arr_opts = []
  arr_opts << '--hard' if opts[:hard]
  arr_opts << commit if commit
  command('reset', arr_opts)
end

#revparse(string) ⇒ Object 



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# File 'lib/git/lib.rb', line 96

def revparse(string)
  return string if string =~ /[A-Fa-f0-9]{40}/  # passing in a sha - just no-op it
  rev = ['head', 'remotes', 'tags'].map do |d|
    File.join(@git_dir, 'refs', d, string)
  end.find do |path|
    File.file?(path)
  end
  return File.read(rev).chomp if rev
  command('rev-parse', string)
end

#stash_apply(id = nil) ⇒ Object 



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# File 'lib/git/lib.rb', line 461

def stash_apply(id = nil)
  if id
    command('stash apply', [id])
  else
    command('stash apply')
  end
end

#stash_clear ⇒ Object 



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# File 'lib/git/lib.rb', line 469

def stash_clear
  command('stash clear')
end

#stash_list ⇒ Object 



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# File 'lib/git/lib.rb', line 473

def stash_list
  command('stash list')
end

#stash_save(message) ⇒ Object 



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# File 'lib/git/lib.rb', line 456

def stash_save(message)
  output = command('stash save', ['--', message])
  output =~ /HEAD is now at/
end

#stashes_all ⇒ Object 



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# File 'lib/git/lib.rb', line 444

def stashes_all
  arr = []
  filename = File.join(@git_dir, 'logs/refs/stash')
  if File.exist?(filename)
    File.open(filename).each_with_index { |line, i|
      m = line.match(/:(.*)$/)
      arr << [i, m[1].strip]
    }
  end
  arr
end

#tag(tag) ⇒ Object 



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# File 'lib/git/lib.rb', line 551

def tag(tag)
  command('tag', tag)
end

#tag_sha(tag_name) ⇒ Object 



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# File 'lib/git/lib.rb', line 565

def tag_sha(tag_name)
  head = File.join(@git_dir, 'refs', 'tags', tag_name)
  return File.read(head).chomp if File.exists?(head)
  
  command('show-ref',  ['--tags', '-s', tag_name])
end

#tags ⇒ Object 



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# File 'lib/git/lib.rb', line 547

def tags
  command_lines('tag')
end

#tree_depth(sha) ⇒ Object 



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# File 'lib/git/lib.rb', line 189

def tree_depth(sha)
  full_tree(sha).size
end

#unmerged ⇒ Object 



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# File 'lib/git/lib.rb', line 508

def unmerged
  unmerged = []
  command_lines('diff', ["--cached"]).each do |line|
    unmerged << $1 if line =~ /^\* Unmerged path (.*)/
  end
  unmerged
end

#update_ref(branch, commit) ⇒ Object 



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# File 'lib/git/lib.rb', line 605

def update_ref(branch, commit)
  command('update-ref', [branch, commit])
end

#write_tree ⇒ Object 



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# File 'lib/git/lib.rb', line 588

def write_tree
  command('write-tree')
end