Adds support for file viewing with Darcs 2.0+ (patch #1799 by Ralph Lange slightly edited).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1759 e93f8b46-1217-0410-a6f0-8f06a7374b81

Adds support for file viewing with Darcs 2.0+ (patch #1799 by Ralph Lange slightly edited).
git-svn-id: http://redmine.rubyforge.org/svn/trunk@1759 e93f8b46-1217-0410-a6f0-8f06a7374b81
d93f9676 · Jean-Philippe Lang · e339d0bc · d93f9676 · d93f9676 · d93f9676
Commit d93f9676 authored Aug 25, 2008 by Jean-Philippe Lang
4 changed files
--- a/app/models/repository/darcs.rb
+++ b/app/models/repository/darcs.rb
@@ -28,6 +28,11 @@ class Repository::Darcs < Repository
    'Darcs'
  end
  
+  def entry(path=nil, identifier=nil)
+    patch = identifier.nil? ? nil : changesets.find_by_revision(identifier)
+    scm.entry(path, patch.nil? ? nil : patch.scmid)
+  end
+  
  def entries(path=nil, identifier=nil)
    patch = identifier.nil? ? nil : changesets.find_by_revision(identifier)
    entries = scm.entries(path, patch.nil? ? nil : patch.scmid)
@@ -46,6 +51,11 @@ class Repository::Darcs < Repository
    entries
  end
  
+  def cat(path, identifier=nil)
+    patch = identifier.nil? ? nil : changesets.find_by_revision(identifier)
+    scm.cat(path, patch.nil? ? nil : patch.scmid)
+  end
+  
  def diff(path, rev, rev_to)
    patch_from = changesets.find_by_revision(rev)
    return nil if patch_from.nil?

--- a/doc/RUNNING_TESTS
+++ b/doc/RUNNING_TESTS
@@ -24,8 +24,8 @@ Git
 ---
 gunzip < test/fixtures/repositories/git_repository.tar.gz | tar -xv -C tmp/test

-Darcs
-----
+Darcs (2.0+ required)
+---------------------
 gunzip < test/fixtures/repositories/darcs_repository.tar.gz | tar -xv -C tmp/test

 FileSystem

--- a/lib/redmine/scm/adapters/darcs_adapter.rb
+++ b/lib/redmine/scm/adapters/darcs_adapter.rb
@@ -25,16 +25,36 @@ module Redmine
        # Darcs executable name
        DARCS_BIN = "darcs"
        
+        class << self
+          def client_version
+            @@client_version ||= (darcs_binary_version || [])
+          end
+  	  
+          def darcs_binary_version
+            cmd = "#{DARCS_BIN} --version"
+            version = nil
+            shellout(cmd) do |io|
+              # Read darcs version in first returned line
+              if m = io.gets.match(%r{((\d+\.)+\d+)})
+                version = m[0].scan(%r{\d+}).collect(&:to_i)
+              end
+            end
+            return nil if $? && $?.exitstatus != 0
+            version
+          end
+        end
+
        def initialize(url, root_url=nil, login=nil, password=nil)
          @url = url
          @root_url = url
        end

        def supports_cat?
-          false
+          # cat supported in darcs 2.0.0 and higher
+          self.class.client_version_above?([2, 0, 0])
        end
-              
-        # Get info about the svn repository
+
+        # Get info about the darcs repository
        def info
          rev = revisions(nil,nil,nil,{:limit => 1})
          rev ? Info.new({:root_url => @url, :lastrev => rev.last}) : nil
@@ -114,6 +134,19 @@ module Redmine
          diff
        end
        
+        def cat(path, identifier=nil)
+          cmd = "#{DARCS_BIN} show content --repodir #{@url}"
+          cmd << " --match \"hash #{identifier}\"" if identifier
+          cmd << " #{shell_quote path}"
+          cat = nil
+          shellout(cmd) do |io|
+            io.binmode
+            cat = io.read
+          end
+          return nil if $? && $?.exitstatus != 0
+          cat
+        end
+
        private
                
        def entry_from_xml(element, path_prefix)

--- a/test/unit/repository_darcs_test.rb
+++ b/test/unit/repository_darcs_test.rb
@@ -48,6 +48,13 @@ class RepositoryDarcsTest < Test::Unit::TestCase
      @repository.fetch_changesets
      assert_equal 6, @repository.changesets.count
    end
+    
+    def test_cat
+      @repository.fetch_changesets
+      cat = @repository.cat("sources/welcome_controller.rb", 2)
+      assert_not_nil cat
+      assert cat.include?('class WelcomeController < ApplicationController')
+    end
  else
    puts "Darcs test repository NOT FOUND. Skipping unit tests !!!"
    def test_fake; assert true end