183 lines
4.8 KiB
Ruby
183 lines
4.8 KiB
Ruby
require "grit"
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module Gitlab
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class GraphCommit
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attr_accessor :time, :space
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attr_accessor :refs
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def self.to_graph(project)
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@repo = project.repo
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commits = Grit::Commit.find_all(@repo, nil, {max_count: 650})
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ref_cache = {}
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commits.map! {|c| GraphCommit.new(Commit.new(c))}
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commits.each { |commit| commit.add_refs(ref_cache, @repo) }
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days = GraphCommit.index_commits(commits)
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@days_json = days.compact.collect{|d| [d.day, d.strftime("%b")] }.to_json
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@commits_json = commits.map(&:to_graph_hash).to_json
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return @days_json, @commits_json
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end
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# Method is adding time and space on the
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# list of commits. As well as returns date list
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# corelated with time set on commits.
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#
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# @param [Array<GraphCommit>] comits to index
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#
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# @return [Array<TimeDate>] list of commit dates corelated with time on commits
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def self.index_commits(commits)
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days, heads = [], []
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map = {}
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commits.reverse.each_with_index do |c,i|
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c.time = i
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days[i] = c.committed_date
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map[c.id] = c
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heads += c.refs unless c.refs.nil?
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end
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heads.select!{|h| h.is_a? Grit::Head or h.is_a? Grit::Remote}
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# sort heads so the master is top and current branches are closer
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heads.sort! do |a,b|
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if a.name == "master"
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-1
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elsif b.name == "master"
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1
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else
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b.commit.committed_date <=> a.commit.committed_date
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end
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end
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@_reserved = {}
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days.each_index do |i|
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@_reserved[i] = []
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end
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heads.each do |h|
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if map.include? h.commit.id then
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place_chain(map[h.commit.id], map)
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end
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end
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days
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end
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# Add space mark on commit and its parents
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#
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# @param [GraphCommit] the commit object.
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# @param [Hash<String,GraphCommit>] map of commits
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def self.place_chain(commit, map, parent_time = nil)
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leaves = take_left_leaves(commit, map)
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if leaves.empty? then
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return
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end
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space = find_free_space(leaves.last.time..leaves.first.time)
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leaves.each{|l| l.space = space}
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# and mark it as reserved
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min_time = leaves.last.time
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parents = leaves.last.parents.collect
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parents.each do |p|
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if map.include? p.id then
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parent = map[p.id]
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if parent.time < min_time then
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min_time = parent.time
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end
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end
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end
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if parent_time.nil? then
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max_time = leaves.first.time
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else
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max_time = parent_time - 1
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end
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mark_reserved(min_time..max_time, space)
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# Visit branching chains
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leaves.each do |l|
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parents = l.parents.collect
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.select{|p| map.include? p.id and map[p.id].space == 0}
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for p in parents
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place_chain(map[p.id], map, l.time)
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end
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end
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end
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def self.mark_reserved(time_range, space)
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for day in time_range
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@_reserved[day].push(space)
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end
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end
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def self.find_free_space(time_range)
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reserved = []
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for day in time_range
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reserved += @_reserved[day]
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end
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space = 1
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while reserved.include? space do
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space += 1
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end
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space
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end
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# Takes most left subtree branch of commits
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# which don't have space mark yet.
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#
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# @param [GraphCommit] the commit object.
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# @param [Hash<String,GraphCommit>] map of commits
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#
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# @return [Array<GraphCommit>] list of branch commits
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def self.take_left_leaves(commit, map)
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leaves = []
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leaves.push(commit) if commit.space == 0
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while true
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parent = commit.parents.collect
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.select{|p| map.include? p.id and map[p.id].space == 0}
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if parent.count == 0 then
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return leaves
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else
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commit = map[parent.first.id]
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leaves.push(commit)
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end
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end
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end
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def initialize(commit)
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@_commit = commit
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@time = -1
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@space = 0
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end
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def method_missing(m, *args, &block)
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@_commit.send(m, *args, &block)
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end
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def to_graph_hash
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h = {}
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h[:parents] = self.parents.collect do |p|
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[p.id,0,0]
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end
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h[:author] = Gitlab::Encode.utf8(author.name)
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h[:time] = time
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h[:space] = space
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h[:refs] = refs.collect{|r|r.name}.join(" ") unless refs.nil?
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h[:id] = sha
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h[:date] = date
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h[:message] = Gitlab::Encode.utf8(message)
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h[:login] = author.email
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h
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end
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def add_refs(ref_cache, repo)
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if ref_cache.empty?
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repo.refs.each do |ref|
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ref_cache[ref.commit.id] ||= []
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ref_cache[ref.commit.id] << ref
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end
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end
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@refs = ref_cache[@_commit.id] if ref_cache.include?(@_commit.id)
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@refs ||= []
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end
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end
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end
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