view lib/redmine/scm/adapters/subversion_adapter.rb @ 1082:997f6d7738f7 bug_531

In repo controller entry action, show the page for the file even if it's binary (so user still has access to history etc links). This makes it possible to use the entry action as the default when a file is clicked on

# Redmine - project management software
# Copyright (C) 2006-2011  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'
require 'uri'

module Redmine
  module Scm
    module Adapters
      class SubversionAdapter < AbstractAdapter

        # SVN executable name
        SVN_BIN = Redmine::Configuration['scm_subversion_command'] || "svn"

        class << self
          def client_command
            @@bin    ||= SVN_BIN
          end

          def sq_bin
            @@sq_bin ||= shell_quote_command
          end

          def client_version
            @@client_version ||= (svn_binary_version || [])
          end

          def client_available
            # --xml options are introduced in 1.3.
            # http://subversion.apache.org/docs/release-notes/1.3.html
            client_version_above?([1, 3])
          end

          def svn_binary_version
            scm_version = scm_version_from_command_line.dup
            if scm_version.respond_to?(:force_encoding)
              scm_version.force_encoding('ASCII-8BIT')
            end
            if m = scm_version.match(%r{\A(.*?)((\d+\.)+\d+)})
              m[2].scan(%r{\d+}).collect(&:to_i)
            end
          end

          def scm_version_from_command_line
            shellout("#{sq_bin} --version") { |io| io.read }.to_s
          end
        end

        # Get info about the svn repository
        def info
          cmd = "#{self.class.sq_bin} info --xml #{target}"
          cmd << credentials_string
          info = nil
          shellout(cmd) do |io|
            output = io.read
            if output.respond_to?(:force_encoding)
              output.force_encoding('UTF-8')
            end
            begin
              doc = ActiveSupport::XmlMini.parse(output)
              # root_url = doc.elements["info/entry/repository/root"].text
              info = Info.new({:root_url => doc['info']['entry']['repository']['root']['__content__'],
                               :lastrev => Revision.new({
                                 :identifier => doc['info']['entry']['commit']['revision'],
                                 :time => Time.parse(doc['info']['entry']['commit']['date']['__content__']).localtime,
                                 :author => (doc['info']['entry']['commit']['author'] ? doc['info']['entry']['commit']['author']['__content__'] : "")
                               })
                             })
            rescue
            end
          end
          return nil if $? && $?.exitstatus != 0
          info
        rescue CommandFailed
          return nil
        end

        # Returns an Entries collection
        # or nil if the given path doesn't exist in the repository
        def entries(path=nil, identifier=nil, options={})
          path ||= ''
          identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"
          entries = Entries.new
          cmd = "#{self.class.sq_bin} list --xml #{target(path)}@#{identifier}"
          cmd << credentials_string
          shellout(cmd) do |io|
            output = io.read
            if output.respond_to?(:force_encoding)
              output.force_encoding('UTF-8')
            end
            begin
              doc = ActiveSupport::XmlMini.parse(output)
              each_xml_element(doc['lists']['list'], 'entry') do |entry|
                commit = entry['commit']
                commit_date = commit['date']
                # Skip directory if there is no commit date (usually that
                # means that we don't have read access to it)
                next if entry['kind'] == 'dir' && commit_date.nil?
                name = entry['name']['__content__']
                entries << Entry.new({:name => URI.unescape(name),
                            :path => ((path.empty? ? "" : "#{path}/") + name),
                            :kind => entry['kind'],
                            :size => ((s = entry['size']) ? s['__content__'].to_i : nil),
                            :lastrev => Revision.new({
                              :identifier => commit['revision'],
                              :time => Time.parse(commit_date['__content__'].to_s).localtime,
                              :author => ((a = commit['author']) ? a['__content__'] : nil)
                              })
                            })
              end
            rescue Exception => e
              logger.error("Error parsing svn output: #{e.message}")
              logger.error("Output was:\n #{output}")
            end
          end
          return nil if $? && $?.exitstatus != 0
          logger.debug("Found #{entries.size} entries in the repository for #{target(path)}") if logger && logger.debug?
          entries.sort_by_name
        end

        def properties(path, identifier=nil)
          # proplist xml output supported in svn 1.5.0 and higher
          return nil unless self.class.client_version_above?([1, 5, 0])

          identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"
          cmd = "#{self.class.sq_bin} proplist --verbose --xml #{target(path)}@#{identifier}"
          cmd << credentials_string
          properties = {}
          shellout(cmd) do |io|
            output = io.read
            if output.respond_to?(:force_encoding)
              output.force_encoding('UTF-8')
            end
            begin
              doc = ActiveSupport::XmlMini.parse(output)
              each_xml_element(doc['properties']['target'], 'property') do |property|
                properties[ property['name'] ] = property['__content__'].to_s
              end
            rescue
            end
          end
          return nil if $? && $?.exitstatus != 0
          properties
        end

        def revisions(path=nil, identifier_from=nil, identifier_to=nil, options={})
          path ||= ''
          identifier_from = (identifier_from && identifier_from.to_i > 0) ? identifier_from.to_i : "HEAD"
          identifier_to = (identifier_to && identifier_to.to_i > 0) ? identifier_to.to_i : 1
          revisions = Revisions.new
          cmd = "#{self.class.sq_bin} log --xml -r #{identifier_from}:#{identifier_to}"
          cmd << credentials_string
          cmd << " --verbose " if  options[:with_paths]
          cmd << " --limit #{options[:limit].to_i}" if options[:limit]
          cmd << ' ' + target(path)
          shellout(cmd) do |io|
            output = io.read
            if output.respond_to?(:force_encoding)
              output.force_encoding('UTF-8')
            end
            begin
              doc = ActiveSupport::XmlMini.parse(output)
              each_xml_element(doc['log'], 'logentry') do |logentry|
                paths = []
                each_xml_element(logentry['paths'], 'path') do |path|
                  paths << {:action => path['action'],
                            :path => path['__content__'],
                            :from_path => path['copyfrom-path'],
                            :from_revision => path['copyfrom-rev']
                            }
                end if logentry['paths'] && logentry['paths']['path']
                paths.sort! { |x,y| x[:path] <=> y[:path] }

                revisions << Revision.new({:identifier => logentry['revision'],
                              :author => (logentry['author'] ? logentry['author']['__content__'] : ""),
                              :time => Time.parse(logentry['date']['__content__'].to_s).localtime,
                              :message => logentry['msg']['__content__'],
                              :paths => paths
                            })
              end
            rescue
            end
          end
          return nil if $? && $?.exitstatus != 0
          revisions
        end

        def diff(path, identifier_from, identifier_to=nil, type="inline")
          path ||= ''
          identifier_from = (identifier_from and identifier_from.to_i > 0) ? identifier_from.to_i : ''

          identifier_to = (identifier_to and identifier_to.to_i > 0) ? identifier_to.to_i : (identifier_from.to_i - 1)

          cmd = "#{self.class.sq_bin} diff -r "
          cmd << "#{identifier_to}:"
          cmd << "#{identifier_from}"
          cmd << " #{target(path)}@#{identifier_from}"
          cmd << credentials_string
          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)
          identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"
          cmd = "#{self.class.sq_bin} cat #{target(path)}@#{identifier}"
          cmd << credentials_string
          cat = nil
          shellout(cmd) do |io|
            io.binmode
            cat = io.read
          end
          return nil if $? && $?.exitstatus != 0
          cat
        end

        def annotate(path, identifier=nil)
          identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"
          cmd = "#{self.class.sq_bin} blame #{target(path)}@#{identifier}"
          cmd << credentials_string
          blame = Annotate.new
          shellout(cmd) do |io|
            io.each_line do |line|
              next unless line =~ %r{^\s*(\d+)\s*(\S+)\s(.*)$}
              rev = $1
              blame.add_line($3.rstrip,
                   Revision.new(
                      :identifier => rev,
                      :revision   => rev,
                      :author     => $2.strip
                      ))
            end
          end
          return nil if $? && $?.exitstatus != 0
          blame
        end

        private

        def credentials_string
          str = ''
          str << " --username #{shell_quote(@login)}" unless @login.blank?
          str << " --password #{shell_quote(@password)}" unless @login.blank? || @password.blank?
          str << " --no-auth-cache --non-interactive"
          str
        end

        # Helper that iterates over the child elements of a xml node
        # MiniXml returns a hash when a single child is found
        # or an array of hashes for multiple children
        def each_xml_element(node, name)
          if node && node[name]
            if node[name].is_a?(Hash)
              yield node[name]
            else
              node[name].each do |element|
                yield element
              end
            end
          end
        end

        def target(path = '')
          base = path.match(/^\//) ? root_url : url
          uri = "#{base}/#{path}"
          uri = URI.escape(URI.escape(uri), '[]')
          shell_quote(uri.gsub(/[?<>\*]/, ''))
        end
      end
    end
  end
end