couch app purism

app.json.erb

{
  "_id": "_design/myapp",
  "rewrites": <%= read 'rewrites.json' %>,
  "updates": {
    "nash": <%=h read 'updates/entry.js' %>
  },
  "validate_doc_update": <%=h read 'validate.js' %>,
  "views": {
    "nashs": {
      "map": <%=h read 'couchdb-views/entries/map.js' %>
    }
  },
  "_attachments": {<% combine %w[vendor/*.js models/*.js views/*.js app.js], 'app.js' do |filename, content| %>
    "<%= filename %>": {
      "content_type": "text/javascript",
      "data": <%=h base64 content || uglify(filename) %>
    },<% end %>
    "style.css": {
      "content_type": "text/css",
      "data": <%=h base64 strip read 'style.css' %>
    },
    "index.html": {
      "content_type": "text/html",
      "data": <%=h base64 strip compile 'index.html.erb' %>
    }
  }
}

gistfile2.txt

./rounch app.json.erb -cud http://127.0.0.1:5984/myapp

rouch

#!/usr/bin/env ruby
# Rouch - couch app purism
# (c) 2011 Johannes J. Schmidt, TF
require 'optparse'
require 'erb'
require 'tempfile'

def read filename
  File.read filename
end

def compile filename
  ERB.new(read(filename)).result(binding)
end

def combine patterns, target, &block
  patterns = [patterns] unless patterns.is_a?(Array)
  files = patterns.map { |p| Dir[p].sort }.flatten
  if ENV['ROUCH_COMBINE']
    block.call(target, files.map { |f| uglify f }.join("\n"))
    @js = [target]
  else
    files.each(&block)
    @js = files
  end
end

def strip content
  content.strip.gsub /\s+/, ' '
end

def base64 content
  [content].pack("m").gsub(/\s+/,'')
end

def uglify filename
  # TODO: remove -b --beautify
  ENV['ROUCH_UGLIFY'] ? `uglifyjs --beautify --indent 0 --quote-keys --no-copyright #{filename}` : read(filename)
end

def h content
  content.inspect
end

def push content
  id = content.gsub(/\A.*"_id": *"([^"]*).*\Z/m, '\1')
  doc = id && `curl -s #{File.join ENV['ROUCH_URL'], id}`
  rev = doc && doc.match('"_rev":') && doc.gsub(/\A.*"_rev": *"([^"]*).*\Z/m, '\1')
  rev && content.gsub!(/"_id":/m, '"_rev": "' + rev + '", "_id":')

  file = Tempfile.new('app.json')
  begin
    file << content
    file.rewind
    puts `curl -s -XPOST #{ENV['ROUCH_URL']} -d@'#{file.path}' -H 'Content-Type: application/json'`
  ensure
    file.close!
  end
end

OptionParser.new do |opts|
  opts.banner = "Usage: #{__FILE__} FILENAME [options]"

  opts.on("-d", "--database URL", "URL of database") do |v|
    ENV['ROUCH_URL'] = v
  end

  opts.on("-c", "--[no-]combine", "Combine javascripts") do |v|
    ENV['ROUCH_COMBINE'] = v.to_s
  end

  opts.on("-u", "--[no-]uglify", "Uglify source") do |v|
    ENV['ROUCH_UGLIFY'] = v.to_s
  end
end.parse!

app = strip compile ARGF.filename
ENV['ROUCH_URL'] ? push(app) : puts(app)