discourse/lib/tasks/release_note.rake

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desc "generate a release note from the important commits"
task "release_note:generate", :from, :to do |t, args|
from = args[:from] || `git describe --tags --abbrev=0`.strip
to = args[:to] || "HEAD"
bug_fixes = Set.new
new_features = Set.new
ux_changes = Set.new
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sec_changes = Set.new
perf_changes = Set.new
`git log #{from}..#{to}`.each_line do |comment|
next if comment =~ /^\s*Revert/
split_comments(comment).each do |line|
if line =~ /^FIX:/
bug_fixes << better(line)
elsif line =~ /^FEATURE:/
new_features << better(line)
elsif line =~ /^UX:/
ux_changes << better(line)
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elsif line =~ /^SECURITY:/
sec_changes << better(line)
elsif line =~ /^PERF:/
perf_changes << better(line)
end
end
end
print_changes("NEW FEATURES", new_features)
print_changes("BUG FIXES", bug_fixes)
print_changes("UX CHANGES", ux_changes)
print_changes("SECURITY CHANGES", sec_changes)
print_changes("PERFORMANCE", perf_changes)
end
def print_changes(heading, changes)
return if changes.length == 0
puts heading
puts "-" * heading.length, ""
puts changes.to_a, ""
end
def better(line)
line = remove_prefix(line)
line = escape_brackets(line)
line[0] = '\#' if line[0] == '#'
line[0] = line[0].capitalize
"- " + line
end
def remove_prefix(line)
line.gsub(/^(FIX|FEATURE|UX|SECURITY|PERF):/, "").strip
end
def escape_brackets(line)
line.gsub("<", "`<")
.gsub(">", ">`")
.gsub("[", "`[")
.gsub("]", "]`")
end
def split_comments(text)
text = normalize_terms(text)
terms = ["FIX:", "FEATURE:", "UX:", "SECURITY:" ,"PERF:"]
terms.each do |term|
text = newlines_at_term(text, term)
end
text.split("\n")
end
def normalize_terms(text)
text = text.gsub(/(BUGFIX|FIX|BUG):/i, "FIX:")
text = text.gsub(/FEATURE:/i, "FEATURE:")
text = text.gsub(/UX:/i, "UX:")
text = text.gsub(/(SECURITY):/i, "SECURITY:")
text = text.gsub(/(PERF):/i, "PERF:")
end
def newlines_at_term(text, term)
if text.include?(term)
text = text.split(term).map{ |l| l.strip }.join("\n#{term} ")
end
text
end