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Versions: 18
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Stored size: 1.98 KB
Contents
require 'chronic'
require 'generator'
module MetricFu
class Churn < Generator
def initialize(options={})
super
if File.exist?(".git")
@source_control = Git.new(MetricFu.churn[:start_date])
elsif File.exist?(".svn")
@source_control = Svn.new(MetricFu.churn[:start_date])
else
raise "Churning requires a subversion or git repo"
end
@minimum_churn_count = MetricFu.churn[:minimum_churn_count] || 5
end
def emit
@changes = parse_log_for_changes.reject {|file, change_count| change_count < @minimum_churn_count}
end
def analyze
@changes = @changes.to_a.sort {|x,y| y[1] <=> x[1]}
@changes = @changes.map {|change| {:file_path => change[0], :times_changed => change[1] }}
end
def to_h
{:churn => {:changes => @changes}}
end
private
def parse_log_for_changes
changes = {}
logs = @source_control.get_logs
logs.each do |line|
changes[line] ? changes[line] += 1 : changes[line] = 1
end
changes
end
class SourceControl
def initialize(start_date=nil)
@start_date = start_date
end
end
class Git < SourceControl
def get_logs
`git log #{date_range} --name-only --pretty=format:`.split(/\n/).reject{|line| line == ""}
end
private
def date_range
if @start_date
date = Chronic.parse(@start_date)
"--after=#{date.strftime('%Y-%m-%d')}"
end
end
end
class Svn < SourceControl
def get_logs
`svn log #{date_range} --verbose`.split(/\n/).map { |line| clean_up_svn_line(line) }.compact
end
private
def date_range
if @start_date
date = Chronic.parse(@start_date)
"--revision {#{date.strftime('%Y-%m-%d')}}:{#{Time.now.strftime('%Y-%m-%d')}}"
end
end
def clean_up_svn_line(line)
m = line.match(/\W*[A,M]\W+(\/.*)\b/)
m ? m[1] : nil
end
end
end
end
Version data entries
18 entries across 18 versions & 4 rubygems