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class CodeStatistics
def initialize(*pairs)
@pairs = pairs
@statistics = calculate_statistics
@total = calculate_total if pairs.length > 1
end
def to_s
print_header
@statistics.each{ |k, v| print_line(k, v) }
print_splitter
if @total
print_line("Total", @total)
print_splitter
end
end
private
def calculate_statistics
@pairs.inject({}) { |stats, pair| stats[pair.first] = calculate_directory_statistics(pair.last); stats }
end
def calculate_directory_statistics(directory, pattern = /.*rb/)
stats = { "lines" => 0, "codelines" => 0, "classes" => 0, "methods" => 0 }
Dir.foreach(directory) do |file_name|
next unless file_name =~ pattern
f = File.open(directory + "/" + file_name)
while line = f.gets
stats["lines"] += 1
stats["classes"] += 1 if line =~ /class [A-Z]/
stats["methods"] += 1 if line =~ /def [a-z]/
stats["codelines"] += 1 unless line =~ /^\s*$/ || line =~ /^\s*#/
end
end
stats
end
def calculate_total
total = { "lines" => 0, "codelines" => 0, "classes" => 0, "methods" => 0 }
@statistics.each_value { |pair| pair.each { |k, v| total[k] += v } }
total
end
def print_header
print_splitter
puts "| Name | Lines | LOC | Classes | Methods | M/C | LOC/M |"
print_splitter
end
def print_splitter
puts "+----------------------+-------+-------+---------+---------+-----+-------+"
end
def print_line(name, statistics)
m_over_c = (statistics["methods"] / statistics["classes"]) rescue m_over_c = 0
loc_over_m = (statistics["codelines"] / statistics["methods"]) - 2 rescue loc_over_m = 0
puts "| #{name.ljust(20)} " +
"| #{statistics["lines"].to_s.rjust(5)} " +
"| #{statistics["codelines"].to_s.rjust(5)} " +
"| #{statistics["classes"].to_s.rjust(7)} " +
"| #{statistics["methods"].to_s.rjust(7)} " +
"| #{m_over_c.to_s.rjust(3)} " +
"| #{loc_over_m.to_s.rjust(5)} |"
end
end
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