Added basic support for CVS and Mercurial SCMs.

Browsing, changesets fetching and diff viewing are implemented.
Only tested with local repositories.

Thanks to Ralph Vater for CVS specific code.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@559 e93f8b46-1217-0410-a6f0-8f06a7374b81

3 files changed, 300 insertions, 0 deletions

diff --git a/app/models/repository/cvs.rb b/app/models/repository/cvs.rb
new file mode 100644
index 000000000..d6d4ed317
--- /dev/null
+++ b/app/models/repository/cvs.rb
@@ -0,0 +1,150 @@
+# 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/cvs_adapter'
+require 'digest/sha1'
+
+class Repository::Cvs < Repository
+  validates_presence_of :url, :root_url
+
+  def scm_adapter
+    Redmine::Scm::Adapters::CvsAdapter
+  end
+  
+  def self.scm_name
+    'CVS'
+  end
+  
+  def entry(path, identifier)
+    e = entries(path, identifier)
+    e ? e.first : nil
+  end
+  
+  def entries(path=nil, identifier=nil)
+    entries=scm.entries(path, identifier)
+    if entries
+      entries.each() do |entry|
+        unless entry.lastrev.nil? || entry.lastrev.identifier
+          change=changes.find_by_revision_and_path( entry.lastrev.revision, scm.with_leading_slash(entry.path) )
+          if change
+            entry.lastrev.identifier=change.changeset.revision
+            entry.lastrev.author=change.changeset.committer
+            entry.lastrev.revision=change.revision
+            entry.lastrev.branch=change.branch
+          end
+        end
+      end
+    end
+    entries
+  end
+  
+  def diff(path, rev, rev_to, type)
+    #convert rev to revision. CVS can't handle changesets here
+    diff=[]
+    changeset_from=changesets.find_by_revision(rev)
+    if rev_to.to_i > 0 
+      changeset_to=changesets.find_by_revision(rev_to)
+    end
+    changeset_from.changes.each() do |change_from|
+      
+      revision_from=nil
+      revision_to=nil      
+      
+      revision_from=change_from.revision if path.nil? || (change_from.path.starts_with? scm.with_leading_slash(path))
+      
+      if revision_from
+        if changeset_to
+          changeset_to.changes.each() do |change_to|
+            revision_to=change_to.revision if change_to.path==change_from.path 
+          end
+        end
+        unless revision_to
+          revision_to=scm.get_previous_revision(revision_from)
+        end
+        diff=diff+scm.diff(change_from.path, revision_from, revision_to, type)
+      end
+    end
+    return diff
+  end
+  
+  def fetch_changesets
+    #not the preferred way with CVS. maybe we should introduce always a cron-job for this
+    last_commit = changesets.maximum(:committed_on)
+    
+    # some nifty bits to introduce a commit-id with cvs
+    # natively cvs doesn't provide any kind of changesets, there is only a revision per file.
+    # we now take a guess using the author, the commitlog and the commit-date.
+    
+    # last one is the next step to take. the commit-date is not equal for all 
+    # commits in one changeset. cvs update the commit-date when the *,v file was touched. so
+    # we use a small delta here, to merge all changes belonging to _one_ changeset
+    time_delta=10.seconds
+    
+    transaction do
+      scm.revisions('', last_commit, nil, :with_paths => true) do |revision|
+        # only add the change to the database, if it doen't exists. the cvs log
+        # is not exclusive at all. 
+        unless changes.find_by_path_and_revision(scm.with_leading_slash(revision.paths[0][:path]), revision.paths[0][:revision])
+          revision
+          cs=Changeset.find(:first, :conditions=>{
+            :committed_on=>revision.time-time_delta..revision.time+time_delta,
+            :committer=>revision.author,
+            :comments=>revision.message
+          })
+        
+          # create a new changeset.... 
+          unless cs 
+            # we use a negative changeset-number here (just for inserting)
+            # later on, we calculate a continous positive number
+            next_rev = changesets.minimum(:revision)            
+            next_rev = 0 if next_rev.nil? or next_rev > 0 
+            next_rev = next_rev - 1
+            
+            cs=Changeset.create(:repository => self,
+            :revision => next_rev, 
+            :committer => revision.author, 
+            :committed_on => revision.time,
+            :comments => revision.message)
+          end
+        
+          #convert CVS-File-States to internal Action-abbrevations
+          #default action is (M)odified
+          action="M"
+          if revision.paths[0][:action]=="Exp" && revision.paths[0][:revision]=="1.1"
+            action="A" #add-action always at first revision (= 1.1)
+          elsif revision.paths[0][:action]=="dead"
+            action="D" #dead-state is similar to Delete
+          end
+        
+          Change.create(:changeset => cs,
+          :action => action,
+          :path => scm.with_leading_slash(revision.paths[0][:path]),
+          :revision => revision.paths[0][:revision],
+          :branch => revision.paths[0][:branch]
+          )
+        end
+      end
+      
+      next_rev = [changesets.maximum(:revision) || 0, 0].max
+      changesets.find(:all, :conditions=>["revision < 0"], :order=>"committed_on ASC").each() do |changeset|
+        next_rev = next_rev + 1
+        changeset.revision = next_rev
+        changeset.save!
+      end
+    end
+  end
+end
diff --git a/app/models/repository/mercurial.rb b/app/models/repository/mercurial.rb
new file mode 100644
index 000000000..5d9ea9cd4
--- /dev/null
+++ b/app/models/repository/mercurial.rb
@@ -0,0 +1,81 @@
+# 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/mercurial_adapter'
+
+class Repository::Mercurial < Repository
+  attr_protected :root_url
+  validates_presence_of :url
+
+  def scm_adapter
+    Redmine::Scm::Adapters::MercurialAdapter
+  end
+  
+  def self.scm_name
+    'Mercurial'
+  end
+  
+  def entries(path=nil, identifier=nil)
+    entries=scm.entries(path, identifier)
+    if entries
+      entries.each do |entry|
+        next unless entry.is_file?
+        # Search the DB for the entry's last change
+        change = changes.find(:first, :conditions => ["path = ?", scm.with_leading_slash(entry.path)], :order => "#{Changeset.table_name}.committed_on DESC")
+        if change
+          entry.lastrev.identifier = change.changeset.revision
+          entry.lastrev.name = change.changeset.revision
+          entry.lastrev.author = change.changeset.committer
+          entry.lastrev.revision = change.revision
+        end
+      end
+    end
+    entries
+  end
+
+  def fetch_changesets
+    scm_info = scm.info
+    if scm_info
+      # latest revision found in database
+      db_revision = latest_changeset ? latest_changeset.revision : nil
+      # latest revision in the repository
+      scm_revision = scm_info.lastrev.identifier.to_i
+      
+      unless changesets.find_by_revision(scm_revision)
+        revisions = scm.revisions('', db_revision, nil)
+        transaction do
+          revisions.reverse_each do |revision|
+            changeset = Changeset.create(:repository => self,
+                                         :revision => revision.identifier,
+                                         :scmid => revision.scmid,
+                                         :committer => revision.author, 
+                                         :committed_on => revision.time,
+                                         :comments => revision.message)
+            
+            revision.paths.each do |change|
+              Change.create(:changeset => changeset,
+                            :action => change[:action],
+                            :path => change[:path],
+                            :from_path => change[:from_path],
+                            :from_revision => change[:from_revision])
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/app/models/repository/subversion.rb b/app/models/repository/subversion.rb
new file mode 100644
index 000000000..cc9c975a3
--- /dev/null
+++ b/app/models/repository/subversion.rb
@@ -0,0 +1,69 @@
+# 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/subversion_adapter'
+
+class Repository::Subversion < Repository
+  attr_protected :root_url
+  validates_presence_of :url
+  validates_format_of :url, :with => /^(http|https|svn|file):\/\/.+/i
+
+  def scm_adapter
+    Redmine::Scm::Adapters::SubversionAdapter
+  end
+  
+  def self.scm_name
+    'Subversion'
+  end
+
+  def fetch_changesets
+    scm_info = scm.info
+    if scm_info
+      # latest revision found in database
+      db_revision = latest_changeset ? latest_changeset.revision : 0
+      # latest revision in the repository
+      scm_revision = scm_info.lastrev.identifier.to_i
+      if db_revision < scm_revision
+        logger.debug "Fetching changesets for repository #{url}" if logger && logger.debug?
+        identifier_from = db_revision + 1
+        while (identifier_from <= scm_revision)
+          # loads changesets by batches of 200
+          identifier_to = [identifier_from + 199, scm_revision].min
+          revisions = scm.revisions('', identifier_to, identifier_from, :with_paths => true)
+          transaction do
+            revisions.reverse_each do |revision|
+              changeset = Changeset.create(:repository => self,
+                                           :revision => revision.identifier, 
+                                           :committer => revision.author, 
+                                           :committed_on => revision.time,
+                                           :comments => revision.message)
+              
+              revision.paths.each do |change|
+                Change.create(:changeset => changeset,
+                              :action => change[:action],
+                              :path => change[:path],
+                              :from_path => change[:from_path],
+                              :from_revision => change[:from_revision])
+              end
+            end
+          end unless revisions.nil?
+          identifier_from = identifier_to + 1
+        end
+      end
+    end
+  end
+end