Class: Churn::GitAnalyzer

Inherits:
SourceControl show all
Defined in:
lib/churn/git_analyzer.rb

Instance Method Summary collapse

Methods inherited from SourceControl

#initialize

Constructor Details

This class inherits a constructor from Churn::SourceControl

Instance Method Details

#get_logs ⇒ Object 



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# File 'lib/churn/git_analyzer.rb', line 4

def get_logs
  `git log #{date_range} --name-only --pretty=format:`.split(/\n/).reject{|line| line == ""}
end

#get_revisions ⇒ Object 



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# File 'lib/churn/git_analyzer.rb', line 8

def get_revisions
  `git log #{date_range} --pretty=format:"%H"`.split(/\n/).reject{|line| line == ""}
end

#get_updated_files_change_info(revision, revisions) ⇒ Object 



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# File 'lib/churn/git_analyzer.rb', line 23

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(/^\+\+\+/)
      recent_file = get_recent_file(line)
      updated[recent_file] = [] unless updated.include?(recent_file)
    elsif line.match(/^@@/)
      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 "git diff lines that don't match the two patterns aren't expected: '#{line}'"
    end
  end
  updated
end

#get_updated_files_from_log(revision, revisions) ⇒ Object 



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# File 'lib/churn/git_analyzer.rb', line 12

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
    `git diff #{revision} #{previous_revision} --unified=0`.split(/\n/).select{|line| line.match(/^@@/) || line.match(/^---/) || line.match(/^\+\+\+/) }
  else
    []
  end
end