require 'rake/clean'
 
task :default => :test
 
# PACKAGING =================================================================
 
require 'rubygems/specification'
$spec = eval(File.read('rdiscount.gemspec'))
 
def package(ext='')
  "pkg/rdiscount-#{$spec.version}" + ext
end
 
desc 'Build packages'
task :package => %w[.gem .tar.gz].map {|e| package(e)}
 
desc 'Build and install as local gem'
task :install => package('.gem') do
  sh "gem install #{package('.gem')}"
end
 
directory 'pkg/'
 
file package('.gem') => %w[pkg/ rdiscount.gemspec] + $spec.files do |f|
  sh "gem build rdiscount.gemspec"
  mv File.basename(f.name), f.name
end
 
file package('.tar.gz') => %w[pkg/] + $spec.files do |f|
  sh "git archive --format=tar HEAD | gzip > #{f.name}"
end
 
# GEMSPEC HELPERS ==========================================================
 
def source_version
  line = File.read('lib/rdiscount.rb')[/^\s*VERSION = .*/]
  line.match(/.*VERSION = '(.*)'/)[1]
end
 
file 'rdiscount.gemspec' => FileList['Rakefile','lib/rdiscount.rb'] do |f|
  # read spec file and split out manifest section
  spec = File.read(f.name)
  head, manifest, tail = spec.split("  # = MANIFEST =\n")
  head.sub!(/\.version = '.*'/, ".version = '#{source_version}'")
  head.sub!(/\.date = '.*'/, ".date = '#{Date.today.to_s}'")
  # determine file list from git ls-files
  files = `git ls-files`.
    split("\n").
    sort.
    reject{ |file| file =~ /^\./ || file =~ /^test\/MarkdownTest/ }.
    map{ |file| "    #{file}" }.
    join("\n")
  # piece file back together and write...
  manifest = "  s.files = %w[\n#{files}\n  ]\n"
  spec = [head,manifest,tail].join("  # = MANIFEST =\n")
  File.open(f.name, 'w') { |io| io.write(spec) }
  puts "updated #{f.name}"
end
 
# ==========================================================
# Ruby Extension
# ==========================================================
 
DLEXT = Config::CONFIG['DLEXT']
 
file 'ext/Makefile' => FileList['ext/{*.c,*.h,*.rb}'] do
  chdir('ext') { ruby 'extconf.rb' }
end
CLEAN.include 'ext/Makefile', 'ext/mkmf.log'
 
file "ext/rdiscount.#{DLEXT}" => FileList['ext/Makefile', 'ext/*.{c,h,rb}'] do |f|
  sh 'cd ext && make'
end
CLEAN.include 'ext/*.{o,bundle,so,dll}'
 
file "lib/rdiscount.#{DLEXT}" => "ext/rdiscount.#{DLEXT}" do |f|
  cp f.prerequisites, "lib/", :preserve => true
end
 
desc 'Build the rdiscount extension'
task :build => "lib/rdiscount.#{DLEXT}"
 
# ==========================================================
# Testing
# ==========================================================
 
desc 'Run unit tests'
task 'test:unit' => [:build] do |t|
  sh 'testrb test/markdown_test.rb test/rdiscount_test.rb'
end
 
desc 'Run conformance tests (MARKDOWN_TEST_VER=1.0)'
task 'test:conformance' => [:build] do |t|
  script = "#{pwd}/bin/rdiscount"
  test_version = ENV['MARKDOWN_TEST_VER'] || '1.0.3'
  chdir("test/MarkdownTest_#{test_version}") do
    sh "./MarkdownTest.pl --script='#{script}' --tidy"
  end
end
 
desc 'Run version 1.0 conformance suite'
task 'test:conformance:1.0' => [:build] do |t|
  ENV['MARKDOWN_TEST_VER'] = '1.0'
  Rake::Task['test:conformance'].invoke
end
 
desc 'Run 1.0.3 conformance suite'
task 'test:conformance:1.0.3' => [:build] do |t|
  ENV['MARKDOWN_TEST_VER'] = '1.0.3'
  Rake::Task['test:conformance'].invoke
end
 
desc 'Run unit and conformance tests'
task :test => %w[test:unit test:conformance]
 
desc 'Run benchmarks'
task :benchmark => :build do |t|
  $:.unshift 'lib'
  load 'test/benchmark.rb'
end
 
# ==========================================================
# Documentation
# ==========================================================
 
desc 'Generate API documentation'
task :doc => 'doc/index.html'
 
file 'doc/index.html' => FileList['lib/*.rb'] do |f|
  sh((<<-end).gsub(/\s+/, ' '))
    hanna --charset utf8 \
          --fmt html \
          --inline-source \
          --line-numbers \
          --main RDiscount \
          --op doc \
          --title 'RDiscount API Documentation' \
          #{f.prerequisites.join(' ')}
  end
end
 
CLEAN.include 'doc'
 
 
# ==========================================================
# Rubyforge
# ==========================================================
 
desc 'Publish new release to rubyforge'
task :release => [package('.gem'), package('.tar.gz')] do |t|
  sh <<-end
    rubyforge add_release wink rdiscount #{$spec.version} #{package('.gem')} &&
    rubyforge add_file    wink rdiscount #{$spec.version} #{package('.tar.gz')}
  end
end
 
desc 'Publish API docs to rubyforge'
task :publish => :doc do |t|
  sh 'scp -rp doc/. rubyforge.org:/var/www/gforge-projects/wink/rdiscount'
end
 
# ==========================================================
# Update package's Discount sources
# ==========================================================
 
desc 'Gather required discount sources into extension directory'
task :gather => 'discount' do |t|
  files =
    FileList[
      'discount/{markdown,mkdio,amalloc,cstring}.h',
      'discount/{markdown,docheader,dumptree,generate,mkdio,resource,toc,Csio}.c'
    ]
  cp files, 'ext/',
    :preserve => true,
    :verbose => true
end
 
# best. task. ever.
file 'discount' do |f|
  STDERR.puts((<<-TEXT).gsub(/^ +/, ''))
    Sorry, this operation requires a human. Tell your human to:
 
    Grab a discount tarball from:
    http://www.pell.portland.or.us/~orc/Code/discount/
 
    Extract here with something like:
    tar xvzf discount-1.2.9.tar.gz
 
    Create a discount symlink pointing at the version directory:
    ln -hsf discount-1.2.9 discount
 
  TEXT
  fail "discount sources required."
end