view app/models/repository/git.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
# Copyright (C) 2007  Patrick Aljord patcito@ŋmail.com
#
# 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/git_adapter'

class Repository::Git < Repository
  attr_protected :root_url
  validates_presence_of :url

  def self.human_attribute_name(attribute_key_name)
    attr_name = attribute_key_name
    if attr_name == "url"
      attr_name = "path_to_repository"
    end
    super(attr_name)
  end

  def self.scm_adapter_class
    Redmine::Scm::Adapters::GitAdapter
  end

  def self.scm_name
    'Git'
  end

  def report_last_commit
    extra_report_last_commit
  end

  def extra_report_last_commit
    return false if extra_info.nil?
    v = extra_info["extra_report_last_commit"]
    return false if v.nil?
    v.to_s != '0'
  end

  def supports_directory_revisions?
    true
  end

  def supports_revision_graph?
    true
  end

  def repo_log_encoding
    'UTF-8'
  end

  # Returns the identifier for the given git changeset
  def self.changeset_identifier(changeset)
    changeset.scmid
  end

  # Returns the readable identifier for the given git changeset
  def self.format_changeset_identifier(changeset)
    changeset.revision[0, 8]
  end

  def branches
    scm.branches
  end

  def tags
    scm.tags
  end

  def default_branch
    scm.default_branch
  rescue Exception => e
    logger.error "git: error during get default branch: #{e.message}"
    nil
  end

  def find_changeset_by_name(name)
    return nil if name.nil? || name.empty?
    e = changesets.find(:first, :conditions => ['revision = ?', name.to_s])
    return e if e
    changesets.find(:first, :conditions => ['scmid LIKE ?', "#{name}%"])
  end

  def entries(path=nil, identifier=nil)
    scm.entries(path,
                identifier,
                options = {:report_last_commit => extra_report_last_commit})
  end

  # With SCMs that have a sequential commit numbering,
  # such as Subversion and Mercurial,
  # Redmine is able to be clever and only fetch changesets
  # going forward from the most recent one it knows about.
  # 
  # However, Git does not have a sequential commit numbering.
  #
  # In order to fetch only new adding revisions,
  # Redmine needs to parse revisions per branch.
  # Branch "last_scmid" is for this requirement.
  #
  # In Git and Mercurial, revisions are not in date order.
  # Redmine Mercurial fixed issues.
  #    * Redmine Takes Too Long On Large Mercurial Repository
  #      http://www.redmine.org/issues/3449
  #    * Sorting for changesets might go wrong on Mercurial repos
  #      http://www.redmine.org/issues/3567
  #
  # Database revision column is text, so Redmine can not sort by revision.
  # Mercurial has revision number, and revision number guarantees revision order.
  # Redmine Mercurial model stored revisions ordered by database id to database.
  # So, Redmine Mercurial model can use correct ordering revisions.
  #
  # Redmine Mercurial adapter uses "hg log -r 0:tip --limit 10"
  # to get limited revisions from old to new.
  # But, Git 1.7.3.4 does not support --reverse with -n or --skip.
  #
  # The repository can still be fully reloaded by calling #clear_changesets
  # before fetching changesets (eg. for offline resync)
  def fetch_changesets
    scm_brs = branches
    return if scm_brs.nil? || scm_brs.empty?
    h1 = extra_info || {}
    h  = h1.dup
    h["branches"]       ||= {}
    h["db_consistent"]  ||= {}
    if changesets.count == 0
      h["db_consistent"]["ordering"] = 1
      merge_extra_info(h)
      self.save
    elsif ! h["db_consistent"].has_key?("ordering")
      h["db_consistent"]["ordering"] = 0
      merge_extra_info(h)
      self.save
    end
    scm_brs.each do |br1|
      br = br1.to_s
      from_scmid = nil
      from_scmid = h["branches"][br]["last_scmid"] if h["branches"][br]
      h["branches"][br] ||= {}
      scm.revisions('', from_scmid, br, {:reverse => true}) do |rev|
        db_rev = find_changeset_by_name(rev.revision)
        transaction do
          if db_rev.nil?
            db_saved_rev = save_revision(rev)
            parents = {}
            parents[db_saved_rev] = rev.parents unless rev.parents.nil?
            parents.each do |ch, chparents|
              ch.parents = chparents.collect{|rp| find_changeset_by_name(rp)}.compact
            end
          end
          h["branches"][br]["last_scmid"] = rev.scmid
          merge_extra_info(h)
          self.save
        end
      end
    end
  end

  def save_revision(rev)
    changeset = Changeset.new(
              :repository   => self,
              :revision     => rev.identifier,
              :scmid        => rev.scmid,
              :committer    => rev.author,
              :committed_on => rev.time,
              :comments     => rev.message
              )
    if changeset.save
      rev.paths.each do |file|
        Change.create(
                  :changeset => changeset,
                  :action    => file[:action],
                  :path      => file[:path])
      end
    end
    changeset
  end
  private :save_revision

  def latest_changesets(path,rev,limit=10)
    revisions = scm.revisions(path, nil, rev, :limit => limit, :all => false)
    return [] if revisions.nil? || revisions.empty?

    changesets.find(
      :all,
      :conditions => [
        "scmid IN (?)",
        revisions.map!{|c| c.scmid}
      ],
      :order => 'committed_on DESC'
    )
  end
end