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require "rails/code_statistics_calculator"
require "active_support/core_ext/enumerable"
class CodeStatistics #:nodoc:
TEST_TYPES = ["Controller tests",
"Helper tests",
"Model tests",
"Mailer tests",
"Job tests",
"Integration tests",
"System tests"]
HEADERS = { lines: " Lines", code_lines: " LOC", classes: "Classes", methods: "Methods" }
def initialize(*pairs)
@pairs = pairs
@statistics = calculate_statistics
@total = calculate_total if pairs.length > 1
end
def to_s
print_header
@pairs.each { |pair| print_line(pair.first, @statistics[pair.first]) }
print_splitter
if @total
print_line("Total", @total)
print_splitter
end
print_code_test_stats
end
private
def calculate_statistics
Hash[@pairs.map { |pair| [pair.first, calculate_directory_statistics(pair.last)] }]
end
def calculate_directory_statistics(directory, pattern = /^(?!\.).*?\.(rb|js|coffee|rake)$/)
stats = CodeStatisticsCalculator.new
Dir.foreach(directory) do |file_name|
path = "#{directory}/#{file_name}"
if File.directory?(path) && (/^\./ !~ file_name)
stats.add(calculate_directory_statistics(path, pattern))
elsif file_name =~ pattern
stats.add_by_file_path(path)
end
end
stats
end
def calculate_total
@statistics.each_with_object(CodeStatisticsCalculator.new) do |pair, total|
total.add(pair.last)
end
end
def calculate_code
code_loc = 0
@statistics.each { |k, v| code_loc += v.code_lines unless TEST_TYPES.include? k }
code_loc
end
def calculate_tests
test_loc = 0
@statistics.each { |k, v| test_loc += v.code_lines if TEST_TYPES.include? k }
test_loc
end
def width_for(label)
[@statistics.values.sum { |s| s.send(label) }.to_s.size, HEADERS[label].length].max
end
def print_header
print_splitter
print "| Name "
HEADERS.each do |k, v|
print " | #{v.rjust(width_for(k))}"
end
puts " | M/C | LOC/M |"
print_splitter
end
def print_splitter
print "+----------------------"
HEADERS.each_key do |k|
print "+#{'-' * (width_for(k) + 2)}"
end
puts "+-----+-------+"
end
def print_line(name, statistics)
m_over_c = (statistics.methods / statistics.classes) rescue m_over_c = 0
loc_over_m = (statistics.code_lines / statistics.methods) - 2 rescue loc_over_m = 0
print "| #{name.ljust(20)} "
HEADERS.each_key do |k|
print "| #{statistics.send(k).to_s.rjust(width_for(k))} "
end
puts "| #{m_over_c.to_s.rjust(3)} | #{loc_over_m.to_s.rjust(5)} |"
end
def print_code_test_stats
code = calculate_code
tests = calculate_tests
puts " Code LOC: #{code} Test LOC: #{tests} Code to Test Ratio: 1:#{sprintf("%.1f", tests.to_f / code)}"
puts ""
end
end
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