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# coding: utf-8

#

# author - Huascar Sanchez

#

require 'rubygems'

require 'find'

require 'csv'

# Result is a record class that will hold

# any collected data related to loops in BIND

class Result

attr_accessor :dir, :file, :loop, :count, :content

def initialize(dir, file, loop, count, content = [])

@dir = dir

@file = file

@loop = loop

@count = count

@content = content

end

def to_s

"Result{dir=#{dir}, file=#{file}, loop=#{loop}, count=#{count}, content=#{content}}"

end

end

# Public: finds all files matching a given file extension(s).

#

# dir - path/to/your/files

# ext - file extension

#

# Returns an array of files matching the extension.

def find(dir, ext = 'c|h')

files = []

# copy file and path to array if

# filename ends in ext. e.g., ".c" or ".h"

Find.find(dir) do |f|

files << f if f.match(/\.#{ext}\Z/)

end

files

end

# Public: calculates frequency of loops

#

# files - array of files matching a given extension: e.g., .c, .h

# directory - path/to/your/files

#

# Returns an array of results.

def count_loops(files, directory)

result = []

files.each do |file|

begin

# ignore statements that start with '#'

curated_code = IO.popen("cpp #{file}").readlines.select { |line| not line.match(/^#/) }

# collect while and for loops

all_while = curated_code.select {|line| line.match('while *\(.*\)')}

all_for = curated_code.select {|line| line.match('for *\(.*\)')}

if all_while.length > 0

content = []

all_while.each do |w|

content << w.strip

end

result << Result.new(directory, File.basename(file), 'while', all_while.length, content )

end

if all_for.length > 0

content = []

all_for.each do |f|

content << f.strip

end

result << Result.new(directory, File.basename(file), 'for', all_for.length, content )

end

rescue Exception => e

puts "Got exception: #{e.inspect}"

end

end

result

end

# makes a new csv file

def makefile(directory)

begin

File.new("result/data-#{directory.gsub('/', '-')}.csv", 'w').close

rescue Exception => e

puts "Got exception: #{e.inspect}"

end

end

# Public: extracts items from results and writes them into a csv file.

#

# result - array of results

# directory - path/to/your/files

#

# Returns nothing.

def copy_to_csv(result, directory)

makefile(directory)

CSV.open("result/data-#{directory.gsub('/', '-')}.csv", 'wb') do |csv|

csv << [:dir, :file, :loop, :count, :content]

result.each do |item|

begin

csv << [

"#{item.dir}",

"#{item.file}",

"#{item.loop}",

"#{item.count}",

item.content.join('>>>')]

rescue Exception => e

puts "Got exception: #{e.inspect}"

end

end

end

end

def play

directories = %w(

bind/lib/dns

bind/lib/bind9

bind/lib/export

bind/lib/irs

bind/lib/isc

bind/lib/isccc

bind/lib/isccfg

bind/lib/lwres

bind/lib/tests

bind/lib/win32

)

directories.each do |dir|

copy_to_csv(count_loops(find(dir), dir), dir)

sleep(15.seconds) # will avoid the vfork problem - not enough resources

end

end

# Public: prints any given string.

#

# s = String output

#

# Prints to STDOUT and returns.

def output(s)

puts(s)

end

# Public: prints a tidy overview of your Lists in descending order of

# number of Items.

#

# Returns nothing.

def overview

output ' Total Loops | Total Whiles | Total Fors '

total_whiles = 0

total_fors = 0

CSV.foreach('result/data.csv', :headers => true) do |row|

increment = row['count'].to_i

total_whiles += increment if row['loop'] == 'while'

total_fors += increment if row['loop'] == 'for'

end

output " \t#{total_whiles + total_fors} \t\t\t#{total_whiles} \t\t#{total_fors}"

output "\n"

end

# Public: prints the detailed view of all collected data.

#

# Returns nothing.

def breakdown

dns = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/dns'}

bind9 = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/bind9'}

export = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/export'}

irs = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/irs'}

isc = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/isc'}

isccc = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/isccc'}

isccfg = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/isccfg'}

lwres = {:while=>0, :for=>0, :total=>0, :dir => 'bind/lib/lwres'}

test = {:while=>0, :for=>0, :total=>0 ,:dir => 'bind/lib/tests'}

CSV.foreach('result/data.csv', :headers => true) do |row|

increment = row['count'].to_i

# calculate total loops

dns[:total] += increment if row['dir'] == dns[:dir]

bind9[:total] += increment if row['dir'] == bind9[:dir]

export[:total] += increment if row['dir'] == export[:dir]

irs[:total] += increment if row['dir'] == irs[:dir]

isc[:total] += increment if row['dir'] == isc[:dir]

isccc[:total] += increment if row['dir'] == isccc[:dir]

isccfg[:total] += increment if row['dir'] == isccfg[:dir]

lwres[:total] += increment if row['dir'] == lwres[:dir]

test[:total] += increment if row['dir'] == test[:dir]

# counts whiles and fors

dns[:while] += increment if row['dir'] == dns[:dir] and row['loop'] == 'while'

bind9[:while] += increment if row['dir'] == bind9[:dir] and row['loop'] == 'while'

export[:while] += increment if row['dir'] == export[:dir] and row['loop'] == 'while'

irs[:while] += increment if row['dir'] == irs[:dir] and row['loop'] == 'while'

isc[:while] += increment if row['dir'] == isc[:dir] and row['loop'] == 'while'

isccc[:while] += increment if row['dir'] == isccc[:dir] and row['loop'] == 'while'

isccfg[:while] += increment if row['dir'] == isccfg[:dir] and row['loop'] == 'while'

lwres[:while] += increment if row['dir'] == lwres[:dir] and row['loop'] == 'while'

test[:while] += increment if row['dir'] == test[:dir] and row['loop'] == 'while'

end

# counts the for loops

dns[:for] = dns[:total] - dns[:while]

bind9[:for] = bind9[:total] - bind9[:while]

export[:for] = export[:total] - export[:while]

irs[:for] = irs[:total] - irs[:while]

isc[:for] = isc[:total] - isc[:while]

isccc[:for] = isccc[:total] - isccc[:while]

isccfg[:for] = isccfg[:total] - isccfg[:while]

lwres[:for] = lwres[:total] - lwres[:while]

test[:for] = test[:total] - test[:while]

output " Directory \t| While Loops | For Whiles | Total "

output " #{dns[:dir]} #{dns[:while]} #{dns[:for]} #{dns[:total]}"

output " #{bind9[:dir]} #{bind9[:while]} #{bind9[:for]} #{bind9[:total]}"

output " #{export[:dir]} #{export[:while]} #{export[:for]} #{export[:total]}"

output " #{irs[:dir]} #{irs[:while]} #{irs[:for]} #{irs[:total]}"

output " #{isc[:dir]} #{isc[:while]} #{isc[:for]} #{isc[:total]}"

output " #{isccc[:dir]} #{isccc[:while]} #{isccc[:for]} #{isccc[:total]}"

output " #{isccfg[:dir]} #{isccfg[:while]} #{isccfg[:for]} #{isccfg[:total]}"

output " #{lwres[:dir]} #{lwres[:while]} #{lwres[:for]} #{lwres[:total]}"

output " #{test[:dir]} #{test[:while]} #{test[:for]} #{test[:total]}"

chart({})

end

def chart(hash)

hash

# TODO (Huascar) use google charts gem to create a chart

end

overview

breakdown