From 4f119b0dd6742db7bfa6eb517886a5b8e4fb1fcb Mon Sep 17 00:00:00 2001
From: Javier Torres <jtorres@carto.com>
Date: Fri, 10 Aug 2018 17:24:39 +0200
Subject: [PATCH] Script to bump versions

---
 bump.rb | 132 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100755 bump.rb

diff --git a/bump.rb b/bump.rb
new file mode 100755
index 0000000000..40eb702af9
--- /dev/null
+++ b/bump.rb
@@ -0,0 +1,132 @@
+#!/usr/bin/env ruby
+
+require 'date'
+
+Dir.chdir(File.dirname(__FILE__))
+
+NEWS_HEADER_REGEX = /^(\d+)\.(\d+)\.(\d+) \(\d{4}-\d{2}-\d{2}\)$\n-+/
+PARTS = ['major', 'minor', 'patch'].freeze
+NEWS_HEADER = <<-EOF
+Development
+-----------
+
+### NOTICES
+- None yet
+
+### Features
+- None yet
+
+### Bug fixes / enhancements
+- None yet
+
+EOF
+
+class Version < Array
+  def initialize(parts)
+    raise "Expected three version parts" unless parts.count == 3
+    super(parts.map(&:to_i))
+  end
+
+  def bump(pos)
+    self[pos] += 1
+    (pos+1..2).each { |p| self[p] = 0 }
+  end
+
+  def to_s
+    join('.')
+  end
+end
+
+def version_from_tag(tag)
+  m = tag.match(/^v(\d+)\.(\d+)\.(\d+)$/)
+  raise "Could not parse tag #{tag}" unless m
+
+  Version.new(m[1..3])
+end
+
+def version_from_news(news)
+  m = news.match(NEWS_HEADER_REGEX)
+  raise "Could not find NEWS version" unless m
+
+  Version.new(m[1..3])
+end
+
+def updated_news(news, next_version)
+  NEWS_HEADER + tag_header(next_version) + clean_development(news)
+end
+
+def tag_header(next_version)
+  h = "#{next_version} (#{Date.today})"
+  h + "\n#{'-' * h.length}\n\n"
+end
+
+def clean_development(news)
+  development, header, rest = news.partition(NEWS_HEADER_REGEX)
+  development_lines = development.split("\n")
+  development_lines.delete('Development')
+  development_lines.delete('-----------')
+
+  # Write non-empty sections
+  news_sections(development_lines).map { |name, lines|
+    if name && lines.any? { |l| !l.strip.empty? }
+      "### #{name}\n#{lines.join("\n")}\n"
+    end
+  }.compact.join('') + "\n#{header}#{rest}"
+end
+
+def news_sections(lines)
+  sections = []
+  section_lines = []
+  section_name = nil
+  lines.each do |line|
+    if line.start_with?('###')
+      if section_name
+        sections << [section_name, section_lines]
+      end
+      section_lines = []
+      section_name = line[4..-1]
+    elsif line != '- None yet'
+      # Replace initial `-` for `*`
+      section_lines << "#{line.sub(/^(\s)*-/, '\1*')}"
+    end
+  end
+  sections << [section_name, section_lines] if section_name
+
+  sections
+end
+
+def help
+  puts 'Usage: '
+  puts '  bump.rb [ major | minor | patch ]    (defaults to `patch`)'
+  exit(1)
+end
+
+ARGV << 'patch' if ARGV.empty?
+help unless ARGV.count == 1
+
+raise 'Not in master branch' unless `git rev-parse --abbrev-ref HEAD`.strip == 'master'
+
+puts 'Pulling and fetching tags...'
+`git pull --tags`
+
+news_content = File.read('NEWS.md')
+
+puts 'Calculating current version...'
+tag_version = version_from_tag(`git describe --abbrev=0`)
+news_version = version_from_news(news_content)
+
+unless tag_version == news_version
+  raise "Mismatched versions between git tag (#{tag_version}) and NEWS (#{news_version})"
+end
+
+part = PARTS.index(ARGV[0])
+help unless part
+
+next_version = tag_version.dup
+next_version.bump(part)
+
+puts "Bumping from #{tag_version} to #{next_version}. Enter to confirm, Ctrl+C to cancel"
+STDIN.getc
+
+puts "Updating NEWS..."
+File.write('NEWS.md', updated_news(news_content, next_version))