Chris@909: # Redmine - project management software
Chris@909: # Copyright (C) 2006-2011  Jean-Philippe Lang
Chris@909: #
Chris@909: # This program is free software; you can redistribute it and/or
Chris@909: # modify it under the terms of the GNU General Public License
Chris@909: # as published by the Free Software Foundation; either version 2
Chris@909: # of the License, or (at your option) any later version.
Chris@909: #
Chris@909: # This program is distributed in the hope that it will be useful,
Chris@909: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@909: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@909: # GNU General Public License for more details.
Chris@909: #
Chris@909: # You should have received a copy of the GNU General Public License
Chris@909: # along with this program; if not, write to the Free Software
Chris@909: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@909: 
Chris@909: require 'redmine/scm/adapters/abstract_adapter'
Chris@909: 
Chris@909: module Redmine
Chris@909:   module Scm
Chris@909:     module Adapters
Chris@909:       class GitAdapter < AbstractAdapter
Chris@909: 
Chris@909:         # Git executable name
Chris@909:         GIT_BIN = Redmine::Configuration['scm_git_command'] || "git"
Chris@909: 
Chris@909:         class << self
Chris@909:           def client_command
Chris@909:             @@bin    ||= GIT_BIN
Chris@909:           end
Chris@909: 
Chris@909:           def sq_bin
Chris@909:             @@sq_bin ||= shell_quote_command
Chris@909:           end
Chris@909: 
Chris@909:           def client_version
Chris@909:             @@client_version ||= (scm_command_version || [])
Chris@909:           end
Chris@909: 
Chris@909:           def client_available
Chris@909:             !client_version.empty?
Chris@909:           end
Chris@909: 
Chris@909:           def scm_command_version
Chris@909:             scm_version = scm_version_from_command_line.dup
Chris@909:             if scm_version.respond_to?(:force_encoding)
Chris@909:               scm_version.force_encoding('ASCII-8BIT')
Chris@909:             end
Chris@909:             if m = scm_version.match(%r{\A(.*?)((\d+\.)+\d+)})
Chris@909:               m[2].scan(%r{\d+}).collect(&:to_i)
Chris@909:             end
Chris@909:           end
Chris@909: 
Chris@909:           def scm_version_from_command_line
Chris@909:             shellout("#{sq_bin} --version --no-color") { |io| io.read }.to_s
Chris@909:           end
Chris@909:         end
Chris@909: 
Chris@909:         def initialize(url, root_url=nil, login=nil, password=nil, path_encoding=nil)
Chris@909:           super
Chris@909:           @path_encoding = path_encoding.blank? ? 'UTF-8' : path_encoding
Chris@909:         end
Chris@909: 
Chris@909:         def path_encoding
Chris@909:           @path_encoding
Chris@909:         end
Chris@909: 
Chris@909:         def info
Chris@909:           begin
Chris@909:             Info.new(:root_url => url, :lastrev => lastrev('',nil))
Chris@909:           rescue
Chris@909:             nil
Chris@909:           end
Chris@909:         end
Chris@909: 
Chris@909:         def branches
Chris@909:           return @branches if @branches
Chris@909:           @branches = []
Chris@909:           cmd_args = %w|branch --no-color --verbose --no-abbrev|
Chris@909:           scm_cmd(*cmd_args) do |io|
Chris@909:             io.each_line do |line|
Chris@909:               branch_rev = line.match('\s*\*?\s*(.*?)\s*([0-9a-f]{40}).*$')
Chris@909:               bran = Branch.new(branch_rev[1])
Chris@909:               bran.revision =  branch_rev[2]
Chris@909:               bran.scmid    =  branch_rev[2]
Chris@909:               @branches << bran
Chris@909:             end
Chris@909:           end
Chris@909:           @branches.sort!
Chris@909:         rescue ScmCommandAborted
Chris@909:           nil
Chris@909:         end
Chris@909: 
Chris@909:         def tags
Chris@909:           return @tags if @tags
Chris@909:           cmd_args = %w|tag|
Chris@909:           scm_cmd(*cmd_args) do |io|
Chris@909:             @tags = io.readlines.sort!.map{|t| t.strip}
Chris@909:           end
Chris@909:         rescue ScmCommandAborted
Chris@909:           nil
Chris@909:         end
Chris@909: 
Chris@909:         def default_branch
Chris@909:           bras = self.branches
Chris@909:           return nil if bras.nil?
Chris@909:           bras.include?('master') ? 'master' : bras.first
Chris@909:         end
Chris@909: 
Chris@909:         def entry(path=nil, identifier=nil)
Chris@909:           parts = path.to_s.split(%r{[\/\\]}).select {|n| !n.blank?}
Chris@909:           search_path = parts[0..-2].join('/')
Chris@909:           search_name = parts[-1]
Chris@909:           if search_path.blank? && search_name.blank?
Chris@909:             # Root entry
Chris@909:             Entry.new(:path => '', :kind => 'dir')
Chris@909:           else
Chris@909:             # Search for the entry in the parent directory
Chris@909:             es = entries(search_path, identifier,
Chris@909:                          options = {:report_last_commit => false})
Chris@909:             es ? es.detect {|e| e.name == search_name} : nil
Chris@909:           end
Chris@909:         end
Chris@909: 
Chris@909:         def entries(path=nil, identifier=nil, options={})
Chris@909:           path ||= ''
Chris@909:           p = scm_iconv(@path_encoding, 'UTF-8', path)
Chris@909:           entries = Entries.new
Chris@909:           cmd_args = %w|ls-tree -l|
Chris@909:           cmd_args << "HEAD:#{p}"          if identifier.nil?
Chris@909:           cmd_args << "#{identifier}:#{p}" if identifier
Chris@909:           scm_cmd(*cmd_args) do |io|
Chris@909:             io.each_line do |line|
Chris@909:               e = line.chomp.to_s
Chris@909:               if e =~ /^\d+\s+(\w+)\s+([0-9a-f]{40})\s+([0-9-]+)\t(.+)$/
Chris@909:                 type = $1
Chris@909:                 sha  = $2
Chris@909:                 size = $3
Chris@909:                 name = $4
Chris@909:                 if name.respond_to?(:force_encoding)
Chris@909:                   name.force_encoding(@path_encoding)
Chris@909:                 end
Chris@909:                 full_path = p.empty? ? name : "#{p}/#{name}"
Chris@909:                 n      = scm_iconv('UTF-8', @path_encoding, name)
Chris@909:                 full_p = scm_iconv('UTF-8', @path_encoding, full_path)
Chris@909:                 entries << Entry.new({:name => n,
Chris@909:                  :path => full_p,
Chris@909:                  :kind => (type == "tree") ? 'dir' : 'file',
Chris@909:                  :size => (type == "tree") ? nil : size,
Chris@909:                  :lastrev => options[:report_last_commit] ?
Chris@909:                                  lastrev(full_path, identifier) : Revision.new
Chris@909:                 }) unless entries.detect{|entry| entry.name == name}
Chris@909:               end
Chris@909:             end
Chris@909:           end
Chris@909:           entries.sort_by_name
Chris@909:         rescue ScmCommandAborted
Chris@909:           nil
Chris@909:         end
Chris@909: 
Chris@909:         def lastrev(path, rev)
Chris@909:           return nil if path.nil?
Chris@909:           cmd_args = %w|log --no-color --encoding=UTF-8 --date=iso --pretty=fuller --no-merges -n 1|
Chris@909:           cmd_args << rev if rev
Chris@909:           cmd_args << "--" << path unless path.empty?
Chris@909:           lines = []
Chris@909:           scm_cmd(*cmd_args) { |io| lines = io.readlines }
Chris@909:           begin
Chris@909:               id = lines[0].split[1]
Chris@909:               author = lines[1].match('Author:\s+(.*)$')[1]
Chris@909:               time = Time.parse(lines[4].match('CommitDate:\s+(.*)$')[1])
Chris@909: 
Chris@909:               Revision.new({
Chris@909:                 :identifier => id,
Chris@909:                 :scmid      => id,
Chris@909:                 :author     => author,
Chris@909:                 :time       => time,
Chris@909:                 :message    => nil,
Chris@909:                 :paths      => nil
Chris@909:                 })
Chris@909:           rescue NoMethodError => e
Chris@909:               logger.error("The revision '#{path}' has a wrong format")
Chris@909:               return nil
Chris@909:           end
Chris@909:         rescue ScmCommandAborted
Chris@909:           nil
Chris@909:         end
Chris@909: 
Chris@909:         def revisions(path, identifier_from, identifier_to, options={})
Chris@909:           revs = Revisions.new
Chris@909:           cmd_args = %w|log --no-color --encoding=UTF-8 --raw --date=iso --pretty=fuller --parents|
Chris@909:           cmd_args << "--reverse" if options[:reverse]
Chris@909:           cmd_args << "--all" if options[:all]
Chris@909:           cmd_args << "-n" << "#{options[:limit].to_i}" if options[:limit]
Chris@909:           from_to = ""
Chris@909:           from_to << "#{identifier_from}.." if identifier_from
Chris@909:           from_to << "#{identifier_to}" if identifier_to
Chris@909:           cmd_args << from_to if !from_to.empty?
Chris@909:           cmd_args << "--since=#{options[:since].strftime("%Y-%m-%d %H:%M:%S")}" if options[:since]
Chris@909:           cmd_args << "--" << scm_iconv(@path_encoding, 'UTF-8', path) if path && !path.empty?
Chris@909: 
Chris@909:           scm_cmd *cmd_args do |io|
Chris@909:             files=[]
Chris@909:             changeset = {}
Chris@909:             parsing_descr = 0  #0: not parsing desc or files, 1: parsing desc, 2: parsing files
Chris@909: 
Chris@909:             io.each_line do |line|
Chris@909:               if line =~ /^commit ([0-9a-f]{40})(( [0-9a-f]{40})*)$/
Chris@909:                 key = "commit"
Chris@909:                 value = $1
Chris@909:                 parents_str = $2
Chris@909:                 if (parsing_descr == 1 || parsing_descr == 2)
Chris@909:                   parsing_descr = 0
Chris@909:                   revision = Revision.new({
Chris@909:                     :identifier => changeset[:commit],
Chris@909:                     :scmid      => changeset[:commit],
Chris@909:                     :author     => changeset[:author],
Chris@909:                     :time       => Time.parse(changeset[:date]),
Chris@909:                     :message    => changeset[:description],
Chris@909:                     :paths      => files,
Chris@909:                     :parents    => changeset[:parents]
Chris@909:                   })
Chris@909:                   if block_given?
Chris@909:                     yield revision
Chris@909:                   else
Chris@909:                     revs << revision
Chris@909:                   end
Chris@909:                   changeset = {}
Chris@909:                   files = []
Chris@909:                 end
Chris@909:                 changeset[:commit] = $1
Chris@909:                 unless parents_str.nil? or parents_str == ""
Chris@909:                   changeset[:parents] = parents_str.strip.split(' ')
Chris@909:                 end
Chris@909:               elsif (parsing_descr == 0) && line =~ /^(\w+):\s*(.*)$/
Chris@909:                 key = $1
Chris@909:                 value = $2
Chris@909:                 if key == "Author"
Chris@909:                   changeset[:author] = value
Chris@909:                 elsif key == "CommitDate"
Chris@909:                   changeset[:date] = value
Chris@909:                 end
Chris@909:               elsif (parsing_descr == 0) && line.chomp.to_s == ""
Chris@909:                 parsing_descr = 1
Chris@909:                 changeset[:description] = ""
Chris@909:               elsif (parsing_descr == 1 || parsing_descr == 2) \
Chris@909:                   && line =~ /^:\d+\s+\d+\s+[0-9a-f.]+\s+[0-9a-f.]+\s+(\w)\t(.+)$/
Chris@909:                 parsing_descr = 2
Chris@909:                 fileaction    = $1
Chris@909:                 filepath      = $2
Chris@909:                 p = scm_iconv('UTF-8', @path_encoding, filepath)
Chris@909:                 files << {:action => fileaction, :path => p}
Chris@909:               elsif (parsing_descr == 1 || parsing_descr == 2) \
Chris@909:                   && line =~ /^:\d+\s+\d+\s+[0-9a-f.]+\s+[0-9a-f.]+\s+(\w)\d+\s+(\S+)\t(.+)$/
Chris@909:                 parsing_descr = 2
Chris@909:                 fileaction    = $1
Chris@909:                 filepath      = $3
Chris@909:                 p = scm_iconv('UTF-8', @path_encoding, filepath)
Chris@909:                 files << {:action => fileaction, :path => p}
Chris@909:               elsif (parsing_descr == 1) && line.chomp.to_s == ""
Chris@909:                 parsing_descr = 2
Chris@909:               elsif (parsing_descr == 1)
Chris@909:                 changeset[:description] << line[4..-1]
Chris@909:               end
Chris@909:             end
Chris@909: 
Chris@909:             if changeset[:commit]
Chris@909:               revision = Revision.new({
Chris@909:                 :identifier => changeset[:commit],
Chris@909:                 :scmid      => changeset[:commit],
Chris@909:                 :author     => changeset[:author],
Chris@909:                 :time       => Time.parse(changeset[:date]),
Chris@909:                 :message    => changeset[:description],
Chris@909:                 :paths      => files,
Chris@909:                 :parents    => changeset[:parents]
Chris@909:                  })
Chris@909:               if block_given?
Chris@909:                 yield revision
Chris@909:               else
Chris@909:                 revs << revision
Chris@909:               end
Chris@909:             end
Chris@909:           end
Chris@909:           revs
Chris@909:         rescue ScmCommandAborted => e
Chris@909:           logger.error("git log #{from_to.to_s} error: #{e.message}")
Chris@909:           revs
Chris@909:         end
Chris@909: 
Chris@909:         def diff(path, identifier_from, identifier_to=nil)
Chris@909:           path ||= ''
Chris@909:           cmd_args = []
Chris@909:           if identifier_to
Chris@909:             cmd_args << "diff" << "--no-color" <<  identifier_to << identifier_from
Chris@909:           else
Chris@909:             cmd_args << "show" << "--no-color" << identifier_from
Chris@909:           end
Chris@909:           cmd_args << "--" <<  scm_iconv(@path_encoding, 'UTF-8', path) unless path.empty?
Chris@909:           diff = []
Chris@909:           scm_cmd *cmd_args do |io|
Chris@909:             io.each_line do |line|
Chris@909:               diff << line
Chris@909:             end
Chris@909:           end
Chris@909:           diff
Chris@909:         rescue ScmCommandAborted
Chris@909:           nil
Chris@909:         end
Chris@909: 
Chris@909:         def annotate(path, identifier=nil)
Chris@909:           identifier = 'HEAD' if identifier.blank?
Chris@909:           cmd_args = %w|blame|
Chris@909:           cmd_args << "-p" << identifier << "--" <<  scm_iconv(@path_encoding, 'UTF-8', path)
Chris@909:           blame = Annotate.new
Chris@909:           content = nil
Chris@909:           scm_cmd(*cmd_args) { |io| io.binmode; content = io.read }
Chris@909:           # git annotates binary files
Chris@909:           return nil if content.is_binary_data?
Chris@909:           identifier = ''
Chris@909:           # git shows commit author on the first occurrence only
Chris@909:           authors_by_commit = {}
Chris@909:           content.split("\n").each do |line|
Chris@909:             if line =~ /^([0-9a-f]{39,40})\s.*/
Chris@909:               identifier = $1
Chris@909:             elsif line =~ /^author (.+)/
Chris@909:               authors_by_commit[identifier] = $1.strip
Chris@909:             elsif line =~ /^\t(.*)/
Chris@909:               blame.add_line($1, Revision.new(
Chris@909:                                     :identifier => identifier,
Chris@909:                                     :revision   => identifier,
Chris@909:                                     :scmid      => identifier,
Chris@909:                                     :author     => authors_by_commit[identifier]
Chris@909:                                     ))
Chris@909:               identifier = ''
Chris@909:               author = ''
Chris@909:             end
Chris@909:           end
Chris@909:           blame
Chris@909:         rescue ScmCommandAborted
Chris@909:           nil
Chris@909:         end
Chris@909: 
Chris@909:         def cat(path, identifier=nil)
Chris@909:           if identifier.nil?
Chris@909:             identifier = 'HEAD'
Chris@909:           end
Chris@909:           cmd_args = %w|show --no-color|
Chris@909:           cmd_args << "#{identifier}:#{scm_iconv(@path_encoding, 'UTF-8', path)}"
Chris@909:           cat = nil
Chris@909:           scm_cmd(*cmd_args) do |io|
Chris@909:             io.binmode
Chris@909:             cat = io.read
Chris@909:           end
Chris@909:           cat
Chris@909:         rescue ScmCommandAborted
Chris@909:           nil
Chris@909:         end
Chris@909: 
Chris@909:         class Revision < Redmine::Scm::Adapters::Revision
Chris@909:           # Returns the readable identifier
Chris@909:           def format_identifier
Chris@909:             identifier[0,8]
Chris@909:           end
Chris@909:         end
Chris@909: 
Chris@909:         def scm_cmd(*args, &block)
Chris@909:           repo_path = root_url || url
Chris@909:           full_args = ['--git-dir', repo_path]
Chris@909:           if self.class.client_version_above?([1, 7, 2])
Chris@909:             full_args << '-c' << 'core.quotepath=false'
Chris@909:             full_args << '-c' << 'log.decorate=no'
Chris@909:           end
Chris@909:           full_args += args
Chris@909:           ret = shellout(
Chris@909:                    self.class.sq_bin + ' ' + full_args.map { |e| shell_quote e.to_s }.join(' '),
Chris@909:                    &block
Chris@909:                    )
Chris@909:           if $? && $?.exitstatus != 0
Chris@909:             raise ScmCommandAborted, "git exited with non-zero status: #{$?.exitstatus}"
Chris@909:           end
Chris@909:           ret
Chris@909:         end
Chris@909:         private :scm_cmd
Chris@909:       end
Chris@909:     end
Chris@909:   end
Chris@909: end