task 'changelog:version' do

# replaces "Next Release (TBD)" in the CHANGELOG with a version and date

changelog = File.open('CHANGELOG.md', 'r', encoding: 'UTF-8') { |f| f.read }

changelog = changelog.lines.to_a

changelog[0] = "#{$VERSION} (#{Time.now.strftime('%Y-%m-%d')})\n"

changelog = changelog.join

File.open('CHANGELOG.md', 'w', encoding: 'UTF-8') { |f| f.write(changelog) }

sh("git add CHANGELOG.md")

end

task 'changelog:next_release' do

# inserts a "Next Release (TDB)" section at the top of the CHANGELOG

lines = []

lines << "Unreleased Changes\n"

lines << "------------------\n"

lines << "\n"

changelog = File.open('CHANGELOG.md', 'r', encoding: 'UTF-8') { |f| f.read }

changelog = lines.join + changelog

File.open('CHANGELOG.md', 'w', encoding: 'UTF-8') { |f| f.write(changelog) }

sh("git add CHANGELOG.md")

sh("git commit -m 'Added next release section to the changelog. [ci skip]'")

end

task 'changelog:latest' do

# Returns the contents of the most recent CHANGELOG section

changelog = File.open('CHANGELOG.md', 'r', encoding: 'UTF-8') { |f| f.read }

lines = []

changelog.lines.to_a[3..-1].each do |line|

if line.match(/^\d+\.\d+\.\d+/)

break

else

lines << line

end

end

puts lines[0..-2].join

end