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	git-svn-id: http://redmine.rubyforge.org/svn/trunk@1553 e93f8b46-1217-0410-a6f0-8f06a7374b81
		
			
				
	
	
		
			357 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			357 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
# redMine - project management software
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# Copyright (C) 2006-2007  Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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# 
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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# 
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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require 'redmine/scm/adapters/abstract_adapter'
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module Redmine
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  module Scm
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    module Adapters
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      class CvsAdapter < AbstractAdapter
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        # CVS executable name
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        CVS_BIN = "cvs"
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        # Guidelines for the input:
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        #  url -> the project-path, relative to the cvsroot (eg. module name)
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        #  root_url -> the good old, sometimes damned, CVSROOT
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        #  login -> unnecessary
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        #  password -> unnecessary too
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        def initialize(url, root_url=nil, login=nil, password=nil)
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          @url = url
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          @login = login if login && !login.empty?
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          @password = (password || "") if @login
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          #TODO: better Exception here (IllegalArgumentException)
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          raise CommandFailed if root_url.blank?
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          @root_url = root_url
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        end
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        def root_url
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          @root_url
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        end
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        def url
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          @url
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        end
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        def info
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          logger.debug "<cvs> info"
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          Info.new({:root_url => @root_url, :lastrev => nil})
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        end
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        def get_previous_revision(revision)
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          CvsRevisionHelper.new(revision).prevRev
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        end
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        # Returns an Entries collection
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        # or nil if the given path doesn't exist in the repository
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        # this method is used by the repository-browser (aka LIST)
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        def entries(path=nil, identifier=nil)
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          logger.debug "<cvs> entries '#{path}' with identifier '#{identifier}'"
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          path_with_project="#{url}#{with_leading_slash(path)}"
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          entries = Entries.new
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          cmd = "#{CVS_BIN} -d #{root_url} rls -ed"
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          cmd << " -D \"#{time_to_cvstime(identifier)}\"" if identifier
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          cmd << " #{shell_quote path_with_project}"
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          shellout(cmd) do |io|
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            io.each_line(){|line|
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              fields=line.chop.split('/',-1)
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              logger.debug(">>InspectLine #{fields.inspect}")
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              if fields[0]!="D"
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                entries << Entry.new({:name => fields[-5],
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                  #:path => fields[-4].include?(path)?fields[-4]:(path + "/"+ fields[-4]),
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                  :path => "#{path}/#{fields[-5]}",
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                  :kind => 'file',
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                  :size => nil,
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                  :lastrev => Revision.new({
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                    :revision => fields[-4],
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                    :name => fields[-4],
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                    :time => Time.parse(fields[-3]),
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                    :author => ''
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                  })
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                })
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              else
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                entries << Entry.new({:name => fields[1],
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                  :path => "#{path}/#{fields[1]}",
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                  :kind => 'dir',
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                  :size => nil,
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                  :lastrev => nil
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                })
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              end
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            }
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          end
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          return nil if $? && $?.exitstatus != 0
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          entries.sort_by_name
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        end  
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        STARTLOG="----------------------------"
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        ENDLOG  ="============================================================================="
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        # Returns all revisions found between identifier_from and identifier_to
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        # in the repository. both identifier have to be dates or nil.
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        # these method returns nothing but yield every result in block
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        def revisions(path=nil, identifier_from=nil, identifier_to=nil, options={}, &block)
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          logger.debug "<cvs> revisions path:'#{path}',identifier_from #{identifier_from}, identifier_to #{identifier_to}"
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          path_with_project="#{url}#{with_leading_slash(path)}"
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          cmd = "#{CVS_BIN} -d #{root_url} rlog"
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          cmd << " -d\">#{time_to_cvstime(identifier_from)}\"" if identifier_from
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          cmd << " #{shell_quote path_with_project}"
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          shellout(cmd) do |io|
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            state="entry_start"
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            commit_log=String.new
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            revision=nil
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            date=nil
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            author=nil
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            entry_path=nil
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            entry_name=nil
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            file_state=nil
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            branch_map=nil
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            io.each_line() do |line|            
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              if state!="revision" && /^#{ENDLOG}/ =~ line
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                commit_log=String.new
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                revision=nil
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                state="entry_start"
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              end
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              if state=="entry_start"
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                branch_map=Hash.new
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                # gsub(/^:.*@[^:]+:\d*/, '') is here to remove :pserver:anonymous@foo.bar: string if present in the url
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                if /^RCS file: #{Regexp.escape(root_url.gsub(/^:.*@[^:]+:\d*/, ''))}\/#{Regexp.escape(path_with_project)}(.+),v$/ =~ line
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                  entry_path = normalize_cvs_path($1)
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                  entry_name = normalize_path(File.basename($1))
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                  logger.debug("Path #{entry_path} <=> Name #{entry_name}")
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                elsif /^head: (.+)$/ =~ line
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                  entry_headRev = $1 #unless entry.nil?
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                elsif /^symbolic names:/ =~ line
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                  state="symbolic" #unless entry.nil?
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                elsif /^#{STARTLOG}/ =~ line
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                  commit_log=String.new
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                  state="revision"
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                end  
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                next
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              elsif state=="symbolic"
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                if /^(.*):\s(.*)/ =~ (line.strip) 
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                  branch_map[$1]=$2
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                else
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                  state="tags"
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                  next
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                end          
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              elsif state=="tags"
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                if /^#{STARTLOG}/ =~ line
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                  commit_log = ""
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                  state="revision"
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                elsif /^#{ENDLOG}/ =~ line
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                  state="head"
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                end
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                next
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              elsif state=="revision"
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                if /^#{ENDLOG}/ =~ line || /^#{STARTLOG}/ =~ line               
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                  if revision
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                    revHelper=CvsRevisionHelper.new(revision)
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                    revBranch="HEAD"
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                    branch_map.each() do |branch_name,branch_point|
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                      if revHelper.is_in_branch_with_symbol(branch_point)
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                        revBranch=branch_name
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                      end
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                    end
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                    logger.debug("********** YIELD Revision #{revision}::#{revBranch}")
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                    yield Revision.new({                    
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                      :time => date,
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                      :author => author,
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                      :message=>commit_log.chomp,
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                      :paths => [{
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                        :revision => revision,
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                        :branch=> revBranch,
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                        :path=>entry_path,
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                        :name=>entry_name,
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                        :kind=>'file',
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                        :action=>file_state
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                      }]
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                    })                 
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                  end
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                  commit_log=String.new
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                  revision=nil
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                  if /^#{ENDLOG}/ =~ line
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                    state="entry_start"
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                  end
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                  next
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                end
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                if /^branches: (.+)$/ =~ line
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                  #TODO: version.branch = $1
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                elsif /^revision (\d+(?:\.\d+)+).*$/ =~ line
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                  revision = $1   
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                elsif /^date:\s+(\d+.\d+.\d+\s+\d+:\d+:\d+)/ =~ line
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                  date      = Time.parse($1)
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                  author    = /author: ([^;]+)/.match(line)[1]
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                  file_state     = /state: ([^;]+)/.match(line)[1]
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                  #TODO: linechanges only available in CVS.... maybe a feature our SVN implementation. i'm sure, they are
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                  #    useful for stats or something else
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                  #                linechanges =/lines: \+(\d+) -(\d+)/.match(line)
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                  #                unless linechanges.nil?
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                  #                  version.line_plus  = linechanges[1]
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                  #                  version.line_minus = linechanges[2]
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                  #                else
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                  #                  version.line_plus  = 0
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                  #                  version.line_minus = 0     
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                  #                end              
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                else            
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                  commit_log << line unless line =~ /^\*\*\* empty log message \*\*\*/
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                end 
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              end 
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            end
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          end
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        end  
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        def diff(path, identifier_from, identifier_to=nil)
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          logger.debug "<cvs> diff path:'#{path}',identifier_from #{identifier_from}, identifier_to #{identifier_to}"
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          path_with_project="#{url}#{with_leading_slash(path)}"
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          cmd = "#{CVS_BIN} -d #{root_url} rdiff -u -r#{identifier_to} -r#{identifier_from} #{shell_quote path_with_project}"
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          diff = []
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          shellout(cmd) do |io|
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            io.each_line do |line|
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              diff << line
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            end
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          end
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          return nil if $? && $?.exitstatus != 0
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          diff
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        end  
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        def cat(path, identifier=nil)
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          identifier = (identifier) ? identifier : "HEAD"
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          logger.debug "<cvs> cat path:'#{path}',identifier #{identifier}"
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          path_with_project="#{url}#{with_leading_slash(path)}"
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          cmd = "#{CVS_BIN} -d #{root_url} co"
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          cmd << " -D \"#{time_to_cvstime(identifier)}\"" if identifier
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          cmd << " -p #{shell_quote path_with_project}"
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          cat = nil
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          shellout(cmd) do |io|
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            cat = io.read
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          end
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          return nil if $? && $?.exitstatus != 0
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          cat
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        end  
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        def annotate(path, identifier=nil)
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          identifier = (identifier) ? identifier : "HEAD"
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          logger.debug "<cvs> annotate path:'#{path}',identifier #{identifier}"
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          path_with_project="#{url}#{with_leading_slash(path)}"
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          cmd = "#{CVS_BIN} -d #{root_url} rannotate -r#{identifier} #{shell_quote path_with_project}"
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          blame = Annotate.new
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          shellout(cmd) do |io|
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            io.each_line do |line|
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              next unless line =~ %r{^([\d\.]+)\s+\(([^\)]+)\s+[^\)]+\):\s(.*)$}
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              blame.add_line($3.rstrip, Revision.new(:revision => $1, :author => $2.strip))
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            end
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          end
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          return nil if $? && $?.exitstatus != 0
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          blame
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        end
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        private
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        # convert a date/time into the CVS-format
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        def time_to_cvstime(time)
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          return nil if time.nil?
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          unless time.kind_of? Time
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            time = Time.parse(time)
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          end
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          return time.strftime("%Y-%m-%d %H:%M:%S")
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        end
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        def normalize_cvs_path(path)
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          normalize_path(path.gsub(/Attic\//,''))
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        end
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        def normalize_path(path)
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          path.sub(/^(\/)*(.*)/,'\2').sub(/(.*)(,v)+/,'\1')
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        end   
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      end  
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      class CvsRevisionHelper
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        attr_accessor :complete_rev, :revision, :base, :branchid
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        def initialize(complete_rev)
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          @complete_rev = complete_rev
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          parseRevision()
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        end
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        def branchPoint
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          return @base
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        end
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        def branchVersion
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          if isBranchRevision
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            return @base+"."+@branchid
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          end
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          return @base
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        end
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        def isBranchRevision
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          !@branchid.nil?
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        end
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        def prevRev
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          unless @revision==0
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            return buildRevision(@revision-1)
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          end
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          return buildRevision(@revision)    
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        end
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        def is_in_branch_with_symbol(branch_symbol)
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          bpieces=branch_symbol.split(".")
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          branch_start="#{bpieces[0..-3].join(".")}.#{bpieces[-1]}"
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          return (branchVersion==branch_start)
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        end
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        private
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        def buildRevision(rev)
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          if rev== 0
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            @base
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          elsif @branchid.nil? 
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            @base+"."+rev.to_s
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          else
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            @base+"."+@branchid+"."+rev.to_s
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          end
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        end
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        # Interpretiert die cvs revisionsnummern wie z.b. 1.14 oder 1.3.0.15
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        def parseRevision()
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          pieces=@complete_rev.split(".")
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          @revision=pieces.last.to_i
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          baseSize=1
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          baseSize+=(pieces.size/2)
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          @base=pieces[0..-baseSize].join(".")
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          if baseSize > 2
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            @branchid=pieces[-2]
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          end     
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        end
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      end
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    end
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  end
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end
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