diff lib/redmine/scm/adapters/mercurial_adapter.rb @ 0:513646585e45

* Import Redmine trunk SVN rev 3859

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/redmine/scm/adapters/mercurial_adapter.rb	Fri Jul 23 15:52:44 2010 +0100
@@ -0,0 +1,205 @@
+# redMine - project management software
+# Copyright (C) 2006-2007  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+require 'redmine/scm/adapters/abstract_adapter'
+
+module Redmine
+  module Scm
+    module Adapters    
+      class MercurialAdapter < AbstractAdapter
+        
+        # Mercurial executable name
+        HG_BIN = "hg"
+        TEMPLATES_DIR = File.dirname(__FILE__) + "/mercurial"
+        TEMPLATE_NAME = "hg-template"
+        TEMPLATE_EXTENSION = "tmpl"
+        
+        class << self
+          def client_version
+            @@client_version ||= (hgversion || [])
+          end
+          
+          def hgversion  
+            # The hg version is expressed either as a
+            # release number (eg 0.9.5 or 1.0) or as a revision
+            # id composed of 12 hexa characters.
+            theversion = hgversion_from_command_line
+            if theversion.match(/^\d+(\.\d+)+/)
+              theversion.split(".").collect(&:to_i)
+            end
+          end
+          
+          def hgversion_from_command_line
+            %x{#{HG_BIN} --version}.match(/\(version (.*)\)/)[1]
+          end
+          
+          def template_path
+            @@template_path ||= template_path_for(client_version)
+          end
+          
+          def template_path_for(version)
+            if ((version <=> [0,9,5]) > 0) || version.empty?
+              ver = "1.0"
+            else
+              ver = "0.9.5"
+            end
+            "#{TEMPLATES_DIR}/#{TEMPLATE_NAME}-#{ver}.#{TEMPLATE_EXTENSION}"
+          end
+        end
+        
+        def info
+          cmd = "#{HG_BIN} -R #{target('')} root"
+          root_url = nil
+          shellout(cmd) do |io|
+            root_url = io.read
+          end
+          return nil if $? && $?.exitstatus != 0
+          info = Info.new({:root_url => root_url.chomp,
+                            :lastrev => revisions(nil,nil,nil,{:limit => 1}).last
+                          })
+          info
+        rescue CommandFailed
+          return nil
+        end
+        
+        def entries(path=nil, identifier=nil)
+          path ||= ''
+          entries = Entries.new
+          cmd = "#{HG_BIN} -R #{target('')} --cwd #{target('')} locate"
+          cmd << " -r " + (identifier ? identifier.to_s : "tip")
+          cmd << " " + shell_quote("path:#{path}") unless path.empty?
+          shellout(cmd) do |io|
+            io.each_line do |line|
+              # HG uses antislashs as separator on Windows
+              line = line.gsub(/\\/, "/")
+              if path.empty? or e = line.gsub!(%r{^#{with_trailling_slash(path)}},'')
+                e ||= line
+                e = e.chomp.split(%r{[\/\\]})
+                entries << Entry.new({:name => e.first,
+                                       :path => (path.nil? or path.empty? ? e.first : "#{with_trailling_slash(path)}#{e.first}"),
+                                       :kind => (e.size > 1 ? 'dir' : 'file'),
+                                       :lastrev => Revision.new
+                                     }) unless e.empty? || entries.detect{|entry| entry.name == e.first}
+              end
+            end
+          end
+          return nil if $? && $?.exitstatus != 0
+          entries.sort_by_name
+        end
+        
+        # Fetch the revisions by using a template file that 
+        # makes Mercurial produce a xml output.
+        def revisions(path=nil, identifier_from=nil, identifier_to=nil, options={})  
+          revisions = Revisions.new
+          cmd = "#{HG_BIN} --debug --encoding utf8 -R #{target('')} log -C --style #{shell_quote self.class.template_path}"
+          if identifier_from && identifier_to
+            cmd << " -r #{identifier_from.to_i}:#{identifier_to.to_i}"
+          elsif identifier_from
+            cmd << " -r #{identifier_from.to_i}:"
+          end
+          cmd << " --limit #{options[:limit].to_i}" if options[:limit]
+          cmd << " #{path}" if path
+          shellout(cmd) do |io|
+            begin
+              # HG doesn't close the XML Document...
+              doc = REXML::Document.new(io.read << "</log>")
+              doc.elements.each("log/logentry") do |logentry|
+                paths = []
+                copies = logentry.get_elements('paths/path-copied')
+                logentry.elements.each("paths/path") do |path|
+                  # Detect if the added file is a copy
+                  if path.attributes['action'] == 'A' and c = copies.find{ |e| e.text == path.text }
+                    from_path = c.attributes['copyfrom-path']
+                    from_rev = logentry.attributes['revision']
+                  end
+                  paths << {:action => path.attributes['action'],
+                    :path => "/#{path.text}",
+                    :from_path => from_path ? "/#{from_path}" : nil,
+                    :from_revision => from_rev ? from_rev : nil
+                  }
+                end
+                paths.sort! { |x,y| x[:path] <=> y[:path] }
+                
+                revisions << Revision.new({:identifier => logentry.attributes['revision'],
+                                            :scmid => logentry.attributes['node'],
+                                            :author => (logentry.elements['author'] ? logentry.elements['author'].text : ""),
+                                            :time => Time.parse(logentry.elements['date'].text).localtime,
+                                            :message => logentry.elements['msg'].text,
+                                            :paths => paths
+                                          })
+              end
+            rescue
+              logger.debug($!)
+            end
+          end
+          return nil if $? && $?.exitstatus != 0
+          revisions
+        end
+        
+        def diff(path, identifier_from, identifier_to=nil)
+          path ||= ''
+          if identifier_to
+            identifier_to = identifier_to.to_i 
+          else
+            identifier_to = identifier_from.to_i - 1
+          end
+          cmd = "#{HG_BIN} -R #{target('')} diff -r #{identifier_to} -r #{identifier_from} --nodates"
+          cmd << " -I #{target(path)}" unless path.empty?
+          diff = []
+          shellout(cmd) do |io|
+            io.each_line do |line|
+              diff << line
+            end
+          end
+          return nil if $? && $?.exitstatus != 0
+          diff
+        end
+        
+        def cat(path, identifier=nil)
+          cmd = "#{HG_BIN} -R #{target('')} cat"
+          cmd << " -r " + (identifier ? identifier.to_s : "tip")
+          cmd << " #{target(path)}"
+          cat = nil
+          shellout(cmd) do |io|
+            io.binmode
+            cat = io.read
+          end
+          return nil if $? && $?.exitstatus != 0
+          cat
+        end
+        
+        def annotate(path, identifier=nil)
+          path ||= ''
+          cmd = "#{HG_BIN} -R #{target('')}"
+          cmd << " annotate -n -u"
+          cmd << " -r " + (identifier ? identifier.to_s : "tip")
+          cmd << " -r #{identifier.to_i}" if identifier
+          cmd << " #{target(path)}"
+          blame = Annotate.new
+          shellout(cmd) do |io|
+            io.each_line do |line|
+              next unless line =~ %r{^([^:]+)\s(\d+):(.*)$}
+              blame.add_line($3.rstrip, Revision.new(:identifier => $2.to_i, :author => $1.strip))
+            end
+          end
+          return nil if $? && $?.exitstatus != 0
+          blame
+        end
+      end
+    end
+  end
+end