class Churn::SourceControl

Base clase for analyzing various SCM systems like git, HG, and SVN

Public Class Methods

new(start_date=nil) click to toggle source
# File lib/churn/scm/source_control.rb, line 24
def initialize(start_date=nil)
  @start_date = start_date
end
set_source_control(start_date) click to toggle source
# File lib/churn/scm/source_control.rb, line 6
def self.set_source_control(start_date)
  if GitAnalyzer.supported?
    GitAnalyzer.new(start_date)
  elsif HgAnalyzer.supported?
    HgAnalyzer.new(start_date)
  elsif BzrAnalyzer.supported?
    BzrAnalyzer.new(start_date)
  elsif SvnAnalyzer.supported?
    SvnAnalyzer.new(start_date)
  else
    raise "Churn requires a bazaar, git, mercurial, or subversion source control"
  end
end
supported?() click to toggle source
# File lib/churn/scm/source_control.rb, line 20
def self.supported?
  raise "child class must implement"
end

Public Instance Methods

get_logs() click to toggle source
# File lib/churn/scm/source_control.rb, line 28
def get_logs
  raise "child class must implement"
end
get_revisions() click to toggle source
# File lib/churn/scm/source_control.rb, line 32
def get_revisions
  raise "child class must implement"
end
get_updated_files_change_info(revision, revisions) click to toggle source
# File lib/churn/scm/source_control.rb, line 36
def get_updated_files_change_info(revision, revisions)
  updated     = {}
  logs        = get_updated_files_from_log(revision, revisions)
  recent_file = nil
  logs.each do |line|
    if line.match(/^---/) || line.match(/^\+\+\+/)
      # Remove the --- a/ and +++ b/ if present
      recent_file = get_recent_file(line)
      updated[recent_file] = [] unless updated.include?(recent_file)
    elsif line.match(/^@@/)
      # Now add the added/removed ranges for the line
      removed_range = get_changed_range(line, '-')
      added_range   = get_changed_range(line, '\+')
      updated[recent_file] << removed_range
      updated[recent_file] << added_range
    else
      puts line.match(/^---/)
      raise "diff lines that don't match the two patterns aren't expected: '#{line}'"
    end
  end
  updated
end
get_updated_files_from_log(revision, revisions) click to toggle source
# File lib/churn/scm/source_control.rb, line 59
def get_updated_files_from_log(revision, revisions)
  current_index = revisions.index(revision)
  previous_index = current_index+1
  previous_revision = revisions[previous_index] unless revisions.length < previous_index
  if revision && previous_revision
    get_diff(revision, previous_revision)
  else
    []
  end
end