changed logging to be far more efficient if you're accessing all the commit objects

Author: scott Chacon

TODO

@@ -1,8 +1,7 @@
 * more documentation
 
+* logging (Git.open(:log => Logger.new))
 
-* more low level index actions
-  - (with_index), checkout-index, read-tree, write-tree, update-ref
 
 * git revert, stash, rebase
 

benchmark.rb

@@ -2,8 +2,8 @@
 require 'benchmark'
 require 'rubygems'
 require 'ruby-prof'
-#require_gem 'git', '1.0.3'
-require 'lib/git'
+require_gem 'git', '1.0.3'
+#require 'lib/git'
 
 def main
   @wbare = File.expand_path(File.join('tests', 'files', 'working.git'))
@@ -66,8 +66,8 @@ def main
             log.size
             log.size
             log.first
-            g.log.between('v2.5').object('example.txt').size
-            g.log.since("2 years ago").size
+            g.log.between('v2.5').object('example.txt').map { |c| c.message }
+            g.log.since("2 years ago").map { |c| c.message }
           end
         end
 

camping/gitweb.rb

@@ -142,7 +142,7 @@ def get repo_id, tree1, tree2
       @git = Git.bare(@repo.path)
       @tree1 = tree1
       @tree2 = tree2
-      @diff = @git.diff(tree1, tree2)
+      @diff = @git.diff(tree2, tree1)
       render :diff
     end
   end
@@ -255,7 +255,7 @@ def commit
           @commit.parents.each do |p|
             code { a p.sha, :href => R(Commit, @repo, p.sha) }
             span.space ' '
-            a 'diff', :href => R(DiffTwo, @repo, p.sha, @commit.sha)
+            a 'diff', :href => R(Diff, @repo, p.sha, @commit.sha)
             span.space ' '
             a 'archive', :href => R(Archive, @repo, p.gtree.sha)            
             br

lib/git/lib.rb

@@ -69,6 +69,18 @@ def log_commits(opts = {})
       command_lines('log', arr_opts, true).map { |l| l.split.first }
     end
 
+    def full_log_commits(opts = {})
+      arr_opts = ['--pretty=raw']
+      arr_opts << "-#{opts[:count]}" if opts[:count]
+      arr_opts << "--since=\"#{opts[:since]}\"" if opts[:since].is_a? String
+      arr_opts << "#{opts[:between][0].to_s}..#{opts[:between][1].to_s}" if (opts[:between] && opts[:between].size == 2)
+      arr_opts << opts[:object] if opts[:object].is_a? String
+      arr_opts << '-- ' + opts[:path_limiter] if opts[:path_limiter].is_a? String
+      
+      full_log = command_lines('log', arr_opts, true)
+      process_commit_data(full_log)
+    end
+    
     def revparse(string)
       command('rev-parse', string)
     end
@@ -87,28 +99,52 @@ def object_size(sha)
 
     # returns useful array of raw commit object data
     def commit_data(sha)
+      sha = sha.to_s
+      cdata = command_lines('cat-file', ['commit', sha])
+      process_commit_data(cdata, sha)
+    end
+    
+    def process_commit_data(data, sha = nil)
       in_message = false
 
-      hsh = {'message' => '', 'parent' => []}
-      command_lines('cat-file', ['commit', sha.to_s]).each do |line|
-        if in_message
+      if sha
+        hsh = {'sha' => sha, 'message' => '', 'parent' => []}
+      else
+        hsh_array = []        
+      end
+    
+      data.each do |line|
+        if in_message && line != ''
           hsh['message'] += line + "\n"
         end
-        
+
         if (line != '') && !in_message
           data = line.split
           key = data.shift
           value = data.join(' ')
+          if key == 'commit'
+            sha = value
+            hsh_array << hsh if hsh
+            hsh = {'sha' => sha, 'message' => '', 'parent' => []}
+          end
           if key == 'parent'
             hsh[key] << value
           else
             hsh[key] = value
           end
+        elsif in_message && line == ''
+          in_message = false
         else
           in_message = true
         end
       end
-      hsh
+      
+      if hsh_array
+        hsh_array << hsh if hsh
+        hsh_array
+      else
+        hsh
+      end
     end
 
     def object_contents(sha)

lib/git/log.rb

@@ -84,9 +84,9 @@ def check_log
 
       # actually run the 'git log' command
       def run_log      
-        log = @base.lib.log_commits(:count => @count, :object => @object, 
+        log = @base.lib.full_log_commits(:count => @count, :object => @object, 
                                     :path_limiter => @path, :since => @since, :between => @between)
-        @commits = log.map { |l| Git::Object::Commit.new(@base, l) }
+        @commits = log.map { |c| Git::Object::Commit.new(@base, c['sha'], c) }
       end
 
   end

lib/git/object.rb

@@ -151,6 +151,13 @@ class Commit < AbstractObject
       @committer = nil
       @message = nil
 
+      def initialize(base, sha, init = nil)
+        super(base, sha)
+        if init
+          set_commit(init)
+        end
+      end
+      
       def message
         check_commit
         @message
@@ -199,6 +206,14 @@ def committer_date
       def diff_parent
         diff(parent)
       end
+      
+      def set_commit(data)
+        @committer = Git::Author.new(data['committer'])
+        @author = Git::Author.new(data['author'])
+        @tree = Tree.new(@base, data['tree'])
+        @parents = data['parent'].map{ |sha| Commit.new(@base, sha) }
+        @message = data['message'].chomp
+      end
 
       private
 
@@ -210,11 +225,7 @@ def setup
         def check_commit
           if !@tree
             data = @base.lib.commit_data(@objectish)
-            @committer = Git::Author.new(data['committer'])
-            @author = Git::Author.new(data['author'])
-            @tree = Tree.new(@base, data['tree'])
-            @parents = data['parent'].map{ |sha| Commit.new(@base, sha) }
-            @message = data['message'].chomp
+            set_commit(data)
           end
         end
 

tests/units/test_lib.rb

@@ -44,6 +44,9 @@ def test_log_commits
 
     a = @lib.log_commits :count => 20, :path_limiter => 'ex_dir/'
     assert_equal(1, a.size)
+
+    a = @lib.full_log_commits :count => 20
+    assert_equal(20, a.size)
   end
 
   def test_revparse