module Network class Graph attr_reader :days, :commits, :map, :notes, :repo def self.max_count @max_count ||= 650 end def initialize(project, ref, commit, filter_ref) @project = project @ref = ref @commit = commit @filter_ref = filter_ref @repo = project.repository @commits = collect_commits @days = index_commits @notes = collect_notes end protected def collect_notes h = Hash.new(0) @project .notes .where('noteable_type = ?', 'Commit') .group('notes.commit_id') .select('notes.commit_id, count(notes.id) as note_count') .each do |item| h[item.commit_id] = item.note_count.to_i end h end # Get commits from repository # def collect_commits find_commits(count_to_display_commit_in_center).map do |commit| # Decorate with app/model/network/commit.rb Network::Commit.new(commit) end end # Method is adding time and space on the # list of commits. As well as returns date list # correlated with time set on commits. # # @return [Array] list of commit dates correlated with time on commits def index_commits days = [] @map = {} @reserved = {} @commits.each_with_index do |c, i| c.time = i days[i] = c.committed_date @map[c.id] = c @reserved[i] = [] end commits_sort_by_ref.each do |commit| place_chain(commit) end # find parent spaces for not overlap lines @commits.each do |c| c.parent_spaces.concat(find_free_parent_spaces(c)) end days end # Skip count that the target commit is displayed in center. def count_to_display_commit_in_center offset = -1 skip = 0 while offset == -1 tmp_commits = find_commits(skip) if tmp_commits.size > 0 index = tmp_commits.index do |c| c.id == @commit.id end if index # Find the target commit offset = index + skip else skip += self.class.max_count end else # Can't find the target commit in the repo. offset = 0 end end if self.class.max_count / 2 < offset # get max index that commit is displayed in the center. offset - self.class.max_count / 2 else 0 end end def find_commits(skip = 0) opts = { max_count: self.class.max_count, skip: skip } opts[:ref] = @commit.id if @filter_ref @repo.find_commits(opts) end def commits_sort_by_ref @commits.sort do |a, b| if include_ref?(a) -1 elsif include_ref?(b) 1 else b.committed_date <=> a.committed_date end end end def include_ref?(commit) commit.ref_names(@repo).include?(@ref) end def find_free_parent_spaces(commit) spaces = [] commit.parents(@map).each do |parent| range = commit.time..parent.time space = if commit.space >= parent.space find_free_parent_space(range, parent.space, -1, commit.space) else find_free_parent_space(range, commit.space, -1, parent.space) end mark_reserved(range, space) spaces << space end spaces end def find_free_parent_space(range, space_base, space_step, space_default) if is_overlap?(range, space_default) find_free_space(range, space_step, space_base, space_default) else space_default end end def is_overlap?(range, overlap_space) range.each do |i| if i != range.first && i != range.last && @commits[i].spaces.include?(overlap_space) return true end end false end # Add space mark on commit and its parents # # @param [::Commit] the commit object. def place_chain(commit, parent_time = nil) leaves = take_left_leaves(commit) if leaves.empty? return end time_range = leaves.first.time..leaves.last.time space_base = get_space_base(leaves) space = find_free_space(time_range, 2, space_base) leaves.each do |l| l.spaces << space end # and mark it as reserved if parent_time.nil? min_time = leaves.first.time else min_time = parent_time + 1 end max_time = leaves.last.time leaves.last.parents(@map).each do |parent| if max_time < parent.time max_time = parent.time end end mark_reserved(min_time..max_time, space) # Visit branching chains leaves.each do |l| parents = l.parents(@map).select{|p| p.space.zero?} parents.each do |p| place_chain(p, l.time) end end end def get_space_base(leaves) space_base = 1 parents = leaves.last.parents(@map) if parents.size > 0 if parents.first.space > 0 space_base = parents.first.space end end space_base end def mark_reserved(time_range, space) time_range.each do |day| @reserved[day].push(space) end end def find_free_space(time_range, space_step, space_base = 1, space_default = nil) space_default ||= space_base reserved = [] time_range.each do |day| reserved.push(*@reserved[day]) end reserved.uniq! space = space_default while reserved.include?(space) space += space_step if space < space_base space_step *= -1 space = space_base + space_step end end space end # Takes most left subtree branch of commits # which don't have space mark yet. # # @param [::Commit] the commit object. # # @return [Array] list of branch commits def take_left_leaves(raw_commit) commit = @map[raw_commit.id] leaves = [] leaves.push(commit) if commit.space.zero? loop do return leaves if commit.parents(@map).count.zero? commit = commit.parents(@map).first return leaves unless commit.space.zero? leaves.push(commit) end end end end