Chris@0: # redMine - project management software
Chris@0: # Copyright (C) 2006-2007  Jean-Philippe Lang
Chris@0: #
Chris@0: # This program is free software; you can redistribute it and/or
Chris@0: # modify it under the terms of the GNU General Public License
Chris@0: # as published by the Free Software Foundation; either version 2
Chris@0: # of the License, or (at your option) any later version.
Chris@0: # 
Chris@0: # This program is distributed in the hope that it will be useful,
Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0: # GNU General Public License for more details.
Chris@0: # 
Chris@0: # You should have received a copy of the GNU General Public License
Chris@0: # along with this program; if not, write to the Free Software
Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@0: 
Chris@0: require 'redmine/scm/adapters/abstract_adapter'
Chris@0: 
Chris@0: module Redmine
Chris@0:   module Scm
Chris@0:     module Adapters    
Chris@0:       class GitAdapter < AbstractAdapter
Chris@0:         # Git executable name
Chris@0:         GIT_BIN = "git"
Chris@0: 
Chris@0:         def info
Chris@0:           begin
Chris@0:             Info.new(:root_url => url, :lastrev => lastrev('',nil))
Chris@0:           rescue
Chris@0:             nil
Chris@0:           end
Chris@0:         end
Chris@0: 
Chris@0:         def branches
Chris@0:           return @branches if @branches
Chris@0:           @branches = []
chris@37:           cmd = "#{GIT_BIN} --git-dir #{target('')} branch --no-color"
Chris@0:           shellout(cmd) do |io|
Chris@0:             io.each_line do |line|
Chris@0:               @branches << line.match('\s*\*?\s*(.*)$')[1]
Chris@0:             end
Chris@0:           end
Chris@0:           @branches.sort!
Chris@0:         end
Chris@0: 
Chris@0:         def tags
Chris@0:           return @tags if @tags
Chris@0:           cmd = "#{GIT_BIN} --git-dir #{target('')} tag"
Chris@0:           shellout(cmd) do |io|
Chris@0:             @tags = io.readlines.sort!.map{|t| t.strip}
Chris@0:           end
Chris@0:         end
Chris@0: 
Chris@0:         def default_branch
Chris@0:           branches.include?('master') ? 'master' : branches.first 
Chris@0:         end
Chris@0:         
Chris@0:         def entries(path=nil, identifier=nil)
Chris@0:           path ||= ''
Chris@0:           entries = Entries.new
Chris@0:           cmd = "#{GIT_BIN} --git-dir #{target('')} ls-tree -l "
Chris@0:           cmd << shell_quote("HEAD:" + path) if identifier.nil?
Chris@0:           cmd << shell_quote(identifier + ":" + path) if identifier
Chris@0:           shellout(cmd)  do |io|
Chris@0:             io.each_line do |line|
Chris@0:               e = line.chomp.to_s
chris@37:               if e =~ /^\d+\s+(\w+)\s+([0-9a-f]{40})\s+([0-9-]+)\t(.+)$/
Chris@0:                 type = $1
Chris@0:                 sha = $2
Chris@0:                 size = $3
Chris@0:                 name = $4
Chris@0:                 full_path = path.empty? ? name : "#{path}/#{name}"
Chris@0:                 entries << Entry.new({:name => name,
Chris@0:                  :path => full_path,
Chris@0:                  :kind => (type == "tree") ? 'dir' : 'file',
Chris@0:                  :size => (type == "tree") ? nil : size,
Chris@0:                  :lastrev => lastrev(full_path,identifier)
Chris@0:                 }) unless entries.detect{|entry| entry.name == name}
Chris@0:               end
Chris@0:             end
Chris@0:           end
Chris@0:           return nil if $? && $?.exitstatus != 0
Chris@0:           entries.sort_by_name
Chris@0:         end
Chris@0: 
Chris@0:         def lastrev(path,rev)
Chris@0:           return nil if path.nil?
chris@37:           cmd = "#{GIT_BIN} --git-dir #{target('')} log --no-color --date=iso --pretty=fuller --no-merges -n 1 "
Chris@0:           cmd << " #{shell_quote rev} " if rev 
chris@37:           cmd <<  "-- #{shell_quote path} " unless path.empty?
Chris@117:           lines = []
Chris@117:           shellout(cmd) { |io| lines = io.readlines }
Chris@117:           return nil if $? && $?.exitstatus != 0
Chris@117:           begin
Chris@117:               id = lines[0].split[1]
Chris@117:               author = lines[1].match('Author:\s+(.*)$')[1]
Chris@117:               time = Time.parse(lines[4].match('CommitDate:\s+(.*)$')[1]).localtime
Chris@0: 
Chris@0:               Revision.new({
Chris@0:                 :identifier => id,
Chris@0:                 :scmid => id,
Chris@0:                 :author => author, 
Chris@0:                 :time => time,
Chris@0:                 :message => nil, 
Chris@0:                 :paths => nil 
Chris@0:               })
Chris@117:           rescue NoMethodError => e
Chris@0:               logger.error("The revision '#{path}' has a wrong format")
Chris@0:               return nil
Chris@0:           end
Chris@0:         end
Chris@0: 
Chris@0:         def revisions(path, identifier_from, identifier_to, options={})
Chris@0:           revisions = Revisions.new
Chris@0: 
chris@37:           cmd = "#{GIT_BIN} --git-dir #{target('')} log --no-color --raw --date=iso --pretty=fuller "
Chris@14:           cmd << " --reverse " if options[:reverse]
Chris@14:           cmd << " --all " if options[:all]
Chris@117:           cmd << " -n #{options[:limit].to_i} " if options[:limit]
Chris@14:           cmd << "#{shell_quote(identifier_from + '..')}" if identifier_from
Chris@14:           cmd << "#{shell_quote identifier_to}" if identifier_to
Chris@0:           cmd << " --since=#{shell_quote(options[:since].strftime("%Y-%m-%d %H:%M:%S"))}" if options[:since]
chris@37:           cmd << " -- #{shell_quote path}" if path && !path.empty?
Chris@0: 
Chris@0:           shellout(cmd) do |io|
Chris@0:             files=[]
Chris@0:             changeset = {}
Chris@0:             parsing_descr = 0  #0: not parsing desc or files, 1: parsing desc, 2: parsing files
Chris@0:             revno = 1
Chris@0: 
Chris@0:             io.each_line do |line|
Chris@0:               if line =~ /^commit ([0-9a-f]{40})$/
Chris@0:                 key = "commit"
Chris@0:                 value = $1
Chris@0:                 if (parsing_descr == 1 || parsing_descr == 2)
Chris@0:                   parsing_descr = 0
Chris@0:                   revision = Revision.new({
Chris@0:                     :identifier => changeset[:commit],
Chris@0:                     :scmid => changeset[:commit],
Chris@0:                     :author => changeset[:author],
Chris@0:                     :time => Time.parse(changeset[:date]),
Chris@0:                     :message => changeset[:description],
Chris@0:                     :paths => files
Chris@0:                   })
Chris@0:                   if block_given?
Chris@0:                     yield revision
Chris@0:                   else
Chris@0:                     revisions << revision
Chris@0:                   end
Chris@0:                   changeset = {}
Chris@0:                   files = []
Chris@0:                   revno = revno + 1
Chris@0:                 end
Chris@0:                 changeset[:commit] = $1
Chris@0:               elsif (parsing_descr == 0) && line =~ /^(\w+):\s*(.*)$/
Chris@0:                 key = $1
Chris@0:                 value = $2
Chris@0:                 if key == "Author"
Chris@0:                   changeset[:author] = value
Chris@0:                 elsif key == "CommitDate"
Chris@0:                   changeset[:date] = value
Chris@0:                 end
Chris@0:               elsif (parsing_descr == 0) && line.chomp.to_s == ""
Chris@0:                 parsing_descr = 1
Chris@0:                 changeset[:description] = ""
Chris@0:               elsif (parsing_descr == 1 || parsing_descr == 2) \
chris@37:               && line =~ /^:\d+\s+\d+\s+[0-9a-f.]+\s+[0-9a-f.]+\s+(\w)\t(.+)$/
Chris@0:                 parsing_descr = 2
Chris@0:                 fileaction = $1
Chris@0:                 filepath = $2
Chris@0:                 files << {:action => fileaction, :path => filepath}
Chris@0:               elsif (parsing_descr == 1 || parsing_descr == 2) \
chris@37:               && line =~ /^:\d+\s+\d+\s+[0-9a-f.]+\s+[0-9a-f.]+\s+(\w)\d+\s+(\S+)\t(.+)$/
Chris@0:                 parsing_descr = 2
Chris@0:                 fileaction = $1
Chris@0:                 filepath = $3
Chris@0:                 files << {:action => fileaction, :path => filepath}
Chris@0:               elsif (parsing_descr == 1) && line.chomp.to_s == ""
Chris@0:                 parsing_descr = 2
Chris@0:               elsif (parsing_descr == 1)
Chris@0:                 changeset[:description] << line[4..-1]
Chris@0:               end
Chris@0:             end 
Chris@0: 
Chris@0:             if changeset[:commit]
Chris@0:               revision = Revision.new({
Chris@0:                 :identifier => changeset[:commit],
Chris@0:                 :scmid => changeset[:commit],
Chris@0:                 :author => changeset[:author],
Chris@0:                 :time => Time.parse(changeset[:date]),
Chris@0:                 :message => changeset[:description],
Chris@0:                 :paths => files
Chris@0:               })
Chris@0: 
Chris@0:               if block_given?
Chris@0:                 yield revision
Chris@0:               else
Chris@0:                 revisions << revision
Chris@0:               end
Chris@0:             end
Chris@0:           end
Chris@0: 
Chris@0:           return nil if $? && $?.exitstatus != 0
Chris@0:           revisions
Chris@0:         end
Chris@0: 
Chris@0:         def diff(path, identifier_from, identifier_to=nil)
Chris@0:           path ||= ''
Chris@0: 
Chris@0:           if identifier_to
chris@37:             cmd = "#{GIT_BIN} --git-dir #{target('')} diff --no-color #{shell_quote identifier_to} #{shell_quote identifier_from}" 
Chris@0:           else
chris@37:             cmd = "#{GIT_BIN} --git-dir #{target('')} show --no-color #{shell_quote identifier_from}"
Chris@0:           end
Chris@0: 
Chris@0:           cmd << " -- #{shell_quote path}" unless path.empty?
Chris@0:           diff = []
Chris@0:           shellout(cmd) do |io|
Chris@0:             io.each_line do |line|
Chris@0:               diff << line
Chris@0:             end
Chris@0:           end
Chris@0:           return nil if $? && $?.exitstatus != 0
Chris@0:           diff
Chris@0:         end
Chris@0:         
Chris@0:         def annotate(path, identifier=nil)
Chris@0:           identifier = 'HEAD' if identifier.blank?
Chris@0:           cmd = "#{GIT_BIN} --git-dir #{target('')} blame -p #{shell_quote identifier} -- #{shell_quote path}"
Chris@0:           blame = Annotate.new
Chris@0:           content = nil
Chris@0:           shellout(cmd) { |io| io.binmode; content = io.read }
Chris@0:           return nil if $? && $?.exitstatus != 0
Chris@0:           # git annotates binary files
Chris@0:           return nil if content.is_binary_data?
Chris@0:           identifier = ''
Chris@0:           # git shows commit author on the first occurrence only
Chris@0:           authors_by_commit = {}
Chris@0:           content.split("\n").each do |line|
Chris@0:             if line =~ /^([0-9a-f]{39,40})\s.*/
Chris@0:               identifier = $1
Chris@0:             elsif line =~ /^author (.+)/
Chris@0:               authors_by_commit[identifier] = $1.strip
Chris@0:             elsif line =~ /^\t(.*)/
Chris@0:               blame.add_line($1, Revision.new(:identifier => identifier, :author => authors_by_commit[identifier]))
Chris@0:               identifier = ''
Chris@0:               author = ''
Chris@0:             end
Chris@0:           end
Chris@0:           blame
Chris@0:         end
Chris@0:         
Chris@0:         def cat(path, identifier=nil)
Chris@0:           if identifier.nil?
Chris@0:             identifier = 'HEAD'
Chris@0:           end
chris@37:           cmd = "#{GIT_BIN} --git-dir #{target('')} show --no-color #{shell_quote(identifier + ':' + path)}"
Chris@0:           cat = nil
Chris@0:           shellout(cmd) do |io|
Chris@0:             io.binmode
Chris@0:             cat = io.read
Chris@0:           end
Chris@0:           return nil if $? && $?.exitstatus != 0
Chris@0:           cat
Chris@0:         end
Chris@117: 
Chris@117:         class Revision < Redmine::Scm::Adapters::Revision
Chris@117:           # Returns the readable identifier
Chris@117:           def format_identifier
Chris@117:             identifier[0,8]
Chris@117:           end
Chris@117:         end
Chris@0:       end
Chris@0:     end
Chris@0:   end
Chris@0: end