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license_header.rb

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# frozen_string_literal: true

module Overcommit::Hook::PreCommit

# Checks for license headers in source files

class LicenseHeader < Base

def run

begin

license_contents = license_lines

rescue Errno::ENOENT

return :fail, "Unable to load license file #{license_file}"

end

messages = applicable_files.map do |file|

check_file(file, license_contents)

end.compact

return :fail, messages.join("\n") if messages.any?

:pass

end

def check_file(file, license_contents)

File.readlines(file).each_with_index do |l, i|

if i >= license_contents.length

break

end

l.chomp!

unless l.end_with?(license_contents[i])

message = "#{file} missing header contents from line #{i} of "\

"#{license_file}: #{license_contents[i]}"

return message

end

end

end

def license_file

config['license_file']

end

def license_lines

@license_lines ||= begin

file_root = Overcommit::Utils.convert_glob_to_absolute(license_file)

File.read(file_root).split("\n")

end

end

end

end