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#!/usr/bin/env ruby
# Removes old version guards in ruby/spec.
# Run it from the ruby/spec repository root.
# The argument is the new minimum supported version.
#
# cd spec
# ../mspec/tool/remove_old_guards.rb <ruby-version>
#
# where <ruby-version> is a version guard with which should be removed
#
# Example:
# tool/remove_old_guards.rb 3.1
#
# As a result guards like
# ruby_version_is "3.1" do
# # ...
# end
#
# will be removed.
def dedent(line)
if line.start_with?(" ")
line[2..-1]
else
line
end
end
def each_spec_file(&block)
Dir["*/**/*.rb"].each(&block)
end
def remove_guards(guard, keep)
each_spec_file do |file|
contents = File.binread(file)
if contents =~ guard
puts file
lines = contents.lines.to_a
while first = lines.find_index { |line| line =~ guard }
comment = first
while comment > 0 and lines[comment-1] =~ /^(\s*)#/
comment -= 1
end
indent = lines[first][/^(\s*)/, 1].length
last = (first+1...lines.size).find { |i|
space = lines[i][/^(\s*)end$/, 1] and space.length == indent
}
raise file unless last
if keep
lines[comment..last] = lines[first+1..last-1].map { |l| dedent(l) }
else
if comment > 0 and lines[comment-1] == "\n"
comment -= 1
elsif lines[last+1] == "\n"
last += 1
end
lines[comment..last] = []
end
end
File.binwrite file, lines.join
end
end
end
def remove_empty_files
each_spec_file do |file|
unless file.include?("fixtures/")
lines = File.readlines(file)
if lines.all? { |line| line.chomp.empty? or line.start_with?('require', '#') }
puts "Removing empty file #{file}"
File.delete(file)
end
end
end
end
def remove_unused_shared_specs
shared_groups = {}
# Dir["**/shared/**/*.rb"].each do |shared|
each_spec_file do |shared|
next if File.basename(shared) == 'constants.rb'
contents = File.binread(shared)
found = false
contents.scan(/^\s*describe (:[\w_?]+), shared: true do$/) {
shared_groups[$1] = 0
found = true
}
if !found and shared.include?('shared/') and !shared.include?('fixtures/') and !shared.end_with?('/constants.rb')
puts "no shared describe in #{shared} ?"
end
end
each_spec_file do |file|
contents = File.binread(file)
contents.scan(/(?:it_behaves_like|it_should_behave_like) (:[\w_?]+)[,\s]/) do
puts $1 unless shared_groups.key?($1)
shared_groups[$1] += 1
end
end
shared_groups.each_pair do |group, value|
if value == 0
puts "Shared describe #{group} seems unused"
elsif value == 1
puts "Shared describe #{group} seems used only once" if $VERBOSE
end
end
end
def search(regexp)
each_spec_file do |file|
contents = File.binread(file)
if contents =~ regexp
puts file
contents.each_line do |line|
if line =~ regexp
puts line
end
end
end
end
end
abort "usage: #{$0} <ruby-version>" if ARGV.empty?
version = Regexp.escape(ARGV.fetch(0))
version += "(?:\\.0)?" if version.count(".") < 2
remove_guards(/ruby_version_is (["'])#{version}\1 do/, true)
remove_guards(/ruby_version_is (["'])[0-9.]*\1 *... *(["'])#{version}\2 do/, false)
remove_guards(/ruby_bug ["']#\d+["'], (["'])[0-9.]*\1 *... *(["'])#{version}\2 do/, true)
remove_empty_files
remove_unused_shared_specs
puts "Search:"
search(/(["'])#{version}\1/)
search(/^\s*#.+#{version}/)
|
