jro_apps/redmine Commit - r5515:bba6199e5135

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# Redmine - project management software

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# Redmine - project management software

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#

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#

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# This program is free software; you can redistribute it and/or

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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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# 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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# 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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# of the License, or (at your option) any later version.

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#

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#

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# This program is distributed in the hope that it will be useful,

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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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# 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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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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# GNU General Public License for more details.

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#

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#

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# You should have received a copy of the GNU General Public License

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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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# 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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# 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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require 'redmine/scm/adapters/abstract_adapter'

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require 'uri'

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require 'uri'

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module Redmine

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module Redmine

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module Scm

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module Scm

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module Adapters

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module Adapters

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class SubversionAdapter < AbstractAdapter

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class SubversionAdapter < AbstractAdapter

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# SVN executable name

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# SVN executable name

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SVN_BIN = Redmine::Configuration['scm_subversion_command'] || "svn"

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SVN_BIN = Redmine::Configuration['scm_subversion_command'] || "svn"

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class << self

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class << self

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def client_command

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def client_command

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@@bin ||= SVN_BIN

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@@bin ||= SVN_BIN

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end

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end

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def sq_bin

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def sq_bin

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@@sq_bin ||= shell_quote(SVN_BIN)

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@@sq_bin ||= shell_quote(SVN_BIN)

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end

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end

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def client_version

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def client_version

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

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

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end

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end

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def client_available

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def client_available

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!client_version.empty?

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!client_version.empty?

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end

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end

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def svn_binary_version

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def svn_binary_version

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scm_version = scm_version_from_command_line.dup

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scm_version = scm_version_from_command_line.dup

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if scm_version.respond_to?(:force_encoding)

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if scm_version.respond_to?(:force_encoding)

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scm_version.force_encoding('ASCII-8BIT')

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scm_version.force_encoding('ASCII-8BIT')

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end

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end

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if m = scm_version.match(%r{\A(.*?)((\d+\.)+\d+)})

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if m = scm_version.match(%r{\A(.*?)((\d+\.)+\d+)})

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m[2].scan(%r{\d+}).collect(&:to_i)

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m[2].scan(%r{\d+}).collect(&:to_i)

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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 scm_version_from_command_line

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def scm_version_from_command_line

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

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

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end

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end

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end

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end

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# Get info about the svn repository

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# Get info about the svn repository

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def info

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def info

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cmd = "#{self.class.sq_bin} info --xml #{target}"

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cmd = "#{self.class.sq_bin} info --xml #{target}"

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cmd << credentials_string

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cmd << credentials_string

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info = nil

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info = nil

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shellout(cmd) do |io|

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shellout(cmd) do |io|

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output = io.read

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output = io.read

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if output.respond_to?(:force_encoding)

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if output.respond_to?(:force_encoding)

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output.force_encoding('UTF-8')

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output.force_encoding('UTF-8')

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end

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end

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begin

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begin

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doc = ActiveSupport::XmlMini.parse(output)

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doc = ActiveSupport::XmlMini.parse(output)

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#root_url = doc.elements["info/entry/repository/root"].text

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# root_url = doc.elements["info/entry/repository/root"].text

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info = Info.new({:root_url => doc['info']['entry']['repository']['root']['__content__'],

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info = Info.new({:root_url => doc['info']['entry']['repository']['root']['__content__'],

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:lastrev => Revision.new({

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:lastrev => Revision.new({

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:identifier => doc['info']['entry']['commit']['revision'],

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:identifier => doc['info']['entry']['commit']['revision'],

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:time => Time.parse(doc['info']['entry']['commit']['date']['__content__']).localtime,

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:time => Time.parse(doc['info']['entry']['commit']['date']['__content__']).localtime,

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:author => (doc['info']['entry']['commit']['author'] ? doc['info']['entry']['commit']['author']['__content__'] : "")

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:author => (doc['info']['entry']['commit']['author'] ? doc['info']['entry']['commit']['author']['__content__'] : "")

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})

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})

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})

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})

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rescue

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rescue

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end

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end

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end

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end

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return nil if $? && $?.exitstatus != 0

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return nil if $? && $?.exitstatus != 0

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info

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info

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rescue CommandFailed

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rescue CommandFailed

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return nil

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return nil

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end

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end

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# Returns an Entries collection

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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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# or nil if the given path doesn't exist in the repository

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def entries(path=nil, identifier=nil)

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def entries(path=nil, identifier=nil)

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path ||= ''

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path ||= ''

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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entries = Entries.new

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entries = Entries.new

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cmd = "#{self.class.sq_bin} list --xml #{target(path)}@#{identifier}"

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cmd = "#{self.class.sq_bin} list --xml #{target(path)}@#{identifier}"

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cmd << credentials_string

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cmd << credentials_string

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shellout(cmd) do |io|

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shellout(cmd) do |io|

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output = io.read

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output = io.read

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if output.respond_to?(:force_encoding)

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if output.respond_to?(:force_encoding)

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output.force_encoding('UTF-8')

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output.force_encoding('UTF-8')

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end

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end

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begin

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begin

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doc = ActiveSupport::XmlMini.parse(output)

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doc = ActiveSupport::XmlMini.parse(output)

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each_xml_element(doc['lists']['list'], 'entry') do |entry|

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each_xml_element(doc['lists']['list'], 'entry') do |entry|

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commit = entry['commit']

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commit = entry['commit']

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commit_date = commit['date']

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commit_date = commit['date']

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# Skip directory if there is no commit date (usually that

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# Skip directory if there is no commit date (usually that

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# means that we don't have read access to it)

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# means that we don't have read access to it)

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next if entry['kind'] == 'dir' && commit_date.nil?

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next if entry['kind'] == 'dir' && commit_date.nil?

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name = entry['name']['__content__']

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name = entry['name']['__content__']

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entries << Entry.new({:name => URI.unescape(name),

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entries << Entry.new({:name => URI.unescape(name),

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:path => ((path.empty? ? "" : "#{path}/") + name),

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:path => ((path.empty? ? "" : "#{path}/") + name),

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:kind => entry['kind'],

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:kind => entry['kind'],

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:size => ((s = entry['size']) ? s['__content__'].to_i : nil),

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:size => ((s = entry['size']) ? s['__content__'].to_i : nil),

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:lastrev => Revision.new({

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:lastrev => Revision.new({

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:identifier => commit['revision'],

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:identifier => commit['revision'],

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:time => Time.parse(commit_date['__content__'].to_s).localtime,

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:time => Time.parse(commit_date['__content__'].to_s).localtime,

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:author => ((a = commit['author']) ? a['__content__'] : nil)

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:author => ((a = commit['author']) ? a['__content__'] : nil)

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})

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})

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})

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})

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end

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end

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rescue Exception => e

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rescue Exception => e

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logger.error("Error parsing svn output: #{e.message}")

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logger.error("Error parsing svn output: #{e.message}")

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logger.error("Output was:\n #{output}")

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logger.error("Output was:\n #{output}")

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end

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end

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end

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end

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return nil if $? && $?.exitstatus != 0

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return nil if $? && $?.exitstatus != 0

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logger.debug("Found #{entries.size} entries in the repository for #{target(path)}") if logger && logger.debug?

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logger.debug("Found #{entries.size} entries in the repository for #{target(path)}") if logger && logger.debug?

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entries.sort_by_name

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entries.sort_by_name

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end

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end

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def properties(path, identifier=nil)

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def properties(path, identifier=nil)

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# proplist xml output supported in svn 1.5.0 and higher

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# proplist xml output supported in svn 1.5.0 and higher

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return nil unless self.class.client_version_above?([1, 5, 0])

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return nil unless self.class.client_version_above?([1, 5, 0])

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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cmd = "#{self.class.sq_bin} proplist --verbose --xml #{target(path)}@#{identifier}"

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cmd = "#{self.class.sq_bin} proplist --verbose --xml #{target(path)}@#{identifier}"

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cmd << credentials_string

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cmd << credentials_string

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properties = {}

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properties = {}

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shellout(cmd) do |io|

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shellout(cmd) do |io|

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output = io.read

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output = io.read

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if output.respond_to?(:force_encoding)

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if output.respond_to?(:force_encoding)

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output.force_encoding('UTF-8')

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output.force_encoding('UTF-8')

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end

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end

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begin

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begin

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doc = ActiveSupport::XmlMini.parse(output)

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doc = ActiveSupport::XmlMini.parse(output)

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each_xml_element(doc['properties']['target'], 'property') do |property|

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each_xml_element(doc['properties']['target'], 'property') do |property|

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properties[ property['name'] ] = property['__content__'].to_s

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properties[ property['name'] ] = property['__content__'].to_s

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end

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end

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rescue

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rescue

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end

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end

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end

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end

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return nil if $? && $?.exitstatus != 0

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return nil if $? && $?.exitstatus != 0

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properties

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properties

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end

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end

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def revisions(path=nil, identifier_from=nil, identifier_to=nil, options={})

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def revisions(path=nil, identifier_from=nil, identifier_to=nil, options={})

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path ||= ''

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path ||= ''

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identifier_from = (identifier_from && identifier_from.to_i > 0) ? identifier_from.to_i : "HEAD"

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identifier_from = (identifier_from && identifier_from.to_i > 0) ? identifier_from.to_i : "HEAD"

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identifier_to = (identifier_to && identifier_to.to_i > 0) ? identifier_to.to_i : 1

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identifier_to = (identifier_to && identifier_to.to_i > 0) ? identifier_to.to_i : 1

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revisions = Revisions.new

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revisions = Revisions.new

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cmd = "#{self.class.sq_bin} log --xml -r #{identifier_from}:#{identifier_to}"

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cmd = "#{self.class.sq_bin} log --xml -r #{identifier_from}:#{identifier_to}"

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cmd << credentials_string

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cmd << credentials_string

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cmd << " --verbose " if options[:with_paths]

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cmd << " --verbose " if options[:with_paths]

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cmd << " --limit #{options[:limit].to_i}" if options[:limit]

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cmd << " --limit #{options[:limit].to_i}" if options[:limit]

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cmd << ' ' + target(path)

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cmd << ' ' + target(path)

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shellout(cmd) do |io|

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shellout(cmd) do |io|

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output = io.read

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output = io.read

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if output.respond_to?(:force_encoding)

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if output.respond_to?(:force_encoding)

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output.force_encoding('UTF-8')

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output.force_encoding('UTF-8')

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end

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end

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begin

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begin

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doc = ActiveSupport::XmlMini.parse(output)

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doc = ActiveSupport::XmlMini.parse(output)

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each_xml_element(doc['log'], 'logentry') do |logentry|

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each_xml_element(doc['log'], 'logentry') do |logentry|

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paths = []

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paths = []

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each_xml_element(logentry['paths'], 'path') do |path|

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each_xml_element(logentry['paths'], 'path') do |path|

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paths << {:action => path['action'],

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paths << {:action => path['action'],

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:path => path['__content__'],

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:path => path['__content__'],

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:from_path => path['copyfrom-path'],

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:from_path => path['copyfrom-path'],

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:from_revision => path['copyfrom-rev']

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:from_revision => path['copyfrom-rev']

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}

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}

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end if logentry['paths'] && logentry['paths']['path']

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end if logentry['paths'] && logentry['paths']['path']

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paths.sort! { |x,y| x[:path] <=> y[:path] }

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paths.sort! { |x,y| x[:path] <=> y[:path] }

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revisions << Revision.new({:identifier => logentry['revision'],

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revisions << Revision.new({:identifier => logentry['revision'],

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:author => (logentry['author'] ? logentry['author']['__content__'] : ""),

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:author => (logentry['author'] ? logentry['author']['__content__'] : ""),

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:time => Time.parse(logentry['date']['__content__'].to_s).localtime,

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:time => Time.parse(logentry['date']['__content__'].to_s).localtime,

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:message => logentry['msg']['__content__'],

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:message => logentry['msg']['__content__'],

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:paths => paths

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:paths => paths

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})

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})

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end

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end

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rescue

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rescue

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end

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end

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end

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end

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return nil if $? && $?.exitstatus != 0

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return nil if $? && $?.exitstatus != 0

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revisions

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revisions

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end

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end

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def diff(path, identifier_from, identifier_to=nil, type="inline")

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def diff(path, identifier_from, identifier_to=nil, type="inline")

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path ||= ''

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path ||= ''

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identifier_from = (identifier_from and identifier_from.to_i > 0) ? identifier_from.to_i : ''

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identifier_from = (identifier_from and identifier_from.to_i > 0) ? identifier_from.to_i : ''

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

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

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cmd = "#{self.class.sq_bin} diff -r "

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cmd = "#{self.class.sq_bin} diff -r "

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cmd << "#{identifier_to}:"

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cmd << "#{identifier_to}:"

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cmd << "#{identifier_from}"

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cmd << "#{identifier_from}"

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cmd << " #{target(path)}@#{identifier_from}"

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cmd << " #{target(path)}@#{identifier_from}"

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cmd << credentials_string

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cmd << credentials_string

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diff = []

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diff = []

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shellout(cmd) do |io|

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shellout(cmd) do |io|

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io.each_line do |line|

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io.each_line do |line|

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diff << line

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diff << line

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end

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end

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end

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end

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return nil if $? && $?.exitstatus != 0

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return nil if $? && $?.exitstatus != 0

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diff

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diff

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end

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end

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def cat(path, identifier=nil)

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def cat(path, identifier=nil)

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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cmd = "#{self.class.sq_bin} cat #{target(path)}@#{identifier}"

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cmd = "#{self.class.sq_bin} cat #{target(path)}@#{identifier}"

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cmd << credentials_string

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cmd << credentials_string

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cat = nil

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cat = nil

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shellout(cmd) do |io|

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shellout(cmd) do |io|

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io.binmode

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io.binmode

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cat = io.read

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cat = io.read

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end

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end

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return nil if $? && $?.exitstatus != 0

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return nil if $? && $?.exitstatus != 0

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cat

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cat

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end

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end

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def annotate(path, identifier=nil)

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def annotate(path, identifier=nil)

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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identifier = (identifier and identifier.to_i > 0) ? identifier.to_i : "HEAD"

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cmd = "#{self.class.sq_bin} blame #{target(path)}@#{identifier}"

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cmd = "#{self.class.sq_bin} blame #{target(path)}@#{identifier}"

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cmd << credentials_string

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cmd << credentials_string

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blame = Annotate.new

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blame = Annotate.new

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shellout(cmd) do |io|

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shellout(cmd) do |io|

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io.each_line do |line|

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io.each_line do |line|

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next unless line =~ %r{^\s*(\d+)\s*(\S+)\s(.*)$}

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next unless line =~ %r{^\s*(\d+)\s*(\S+)\s(.*)$}

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rev = $1

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rev = $1

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blame.add_line($3.rstrip,

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blame.add_line($3.rstrip,

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Revision.new(

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Revision.new(

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:identifier => rev,

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:identifier => rev,

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:revision => rev,

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:revision => rev,

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:author => $2.strip

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:author => $2.strip

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))

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))

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end

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end

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end

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end

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return nil if $? && $?.exitstatus != 0

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return nil if $? && $?.exitstatus != 0

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blame

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blame

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end

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end

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private

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private

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def credentials_string

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def credentials_string

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str = ''

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str = ''

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str << " --username #{shell_quote(@login)}" unless @login.blank?

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str << " --username #{shell_quote(@login)}" unless @login.blank?

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str << " --password #{shell_quote(@password)}" unless @login.blank? || @password.blank?

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str << " --password #{shell_quote(@password)}" unless @login.blank? || @password.blank?

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str << " --no-auth-cache --non-interactive"

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str << " --no-auth-cache --non-interactive"

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str

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str

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end

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end

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# Helper that iterates over the child elements of a xml node

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# Helper that iterates over the child elements of a xml node

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# MiniXml returns a hash when a single child is found

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# MiniXml returns a hash when a single child is found

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# or an array of hashes for multiple children

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# or an array of hashes for multiple children

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def each_xml_element(node, name)

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def each_xml_element(node, name)

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if node && node[name]

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if node && node[name]

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if node[name].is_a?(Hash)

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if node[name].is_a?(Hash)

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yield node[name]

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yield node[name]

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else

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else

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node[name].each do |element|

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node[name].each do |element|

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yield element

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yield element

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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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end

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end

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def target(path = '')

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def target(path = '')

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base = path.match(/^\//) ? root_url : url

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base = path.match(/^\//) ? root_url : url

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uri = "#{base}/#{path}"

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uri = "#{base}/#{path}"

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uri = URI.escape(URI.escape(uri), '[]')

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uri = URI.escape(URI.escape(uri), '[]')

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shell_quote(uri.gsub(/[?<>\*]/, ''))

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shell_quote(uri.gsub(/[?<>\*]/, ''))

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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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end

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end

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end

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end

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             # Redmine - project management software
             # Copyright (C) 2006-2010  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(SVN_BIN)
                       end
                       def client_version
                         @@client_version ||= (svn_binary_version || [])
                       end
                       def client_available
                         !client_version.empty?
                       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
+                          # 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)
                       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