Module: OBF::Utils

Defined in:
lib/obf/utils.rb

Defined Under Namespace

Classes: Zipper

Class Method Summary collapse

Class Method Details

.as_progress_percent(a, b, &block) ⇒ Object 



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# File 'lib/obf/utils.rb', line 385

def self.as_progress_percent(a, b, &block)
  if Object.const_defined?('Progress') && Progress.respond_to?(:as_percent)
    Progress.as_percent(a, b, &block)
  else
    block.call
  end
end

.build_zip(dest_path = nil, &block) ⇒ Object 



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# File 'lib/obf/utils.rb', line 368

def self.build_zip(dest_path=nil, &block)
  require 'zip'
  
  if !dest_path
    dest_path = OBF::Utils.temp_path(['archive', '.obz'])
  end
  Zip::File.open(dest_path, Zip::File::CREATE) do |zipfile|
    block.call(Zipper.new(zipfile))
  end
end

.fix_color(str, type = 'hex') ⇒ Object 



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# File 'lib/obf/utils.rb', line 208

def self.fix_color(str, type='hex')
  lookup = str + "::" + type
  @@colors ||= {}
  return @@colors[lookup] if @@colors[lookup]
  path = File.dirname(File.dirname(__FILE__)) + '/tinycolor_convert.js'
  color = `node #{path} "#{str}" #{type}`.strip
  @@colors[lookup] = color
  color
end

.get_url(url) ⇒ Object 



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# File 'lib/obf/utils.rb', line 3

def self.get_url(url)
  return nil unless url
  content_type = nil
  data = nil
  if url.match(/^data:/)
    content_type = url.split(/;/)[0].split(/:/)[1]
    data = Base64.strict_decode64(url.split(/\,/, 2)[1])
  else
    res = Typhoeus.get(URI.escape(url))
    content_type = res.headers['Content-Type']
    data = res.body
  end
  type = MIME::Types[content_type]
  type = type && type[0]
  extension = ""
  if type.respond_to?(:preferred_extension)
    extension = ("." + type.preferred_extension) if type.preferred_extension
  elsif type.respond_to?(:extensions)
    extension = ("." + type.extensions[0]) if type && type.extensions && type.extensions.length > 0
  end
  res = {
    'content_type' => content_type,
    'data' => data,
    'extension' => extension
  }
  res
end

.identify_file(path) ⇒ Object 



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# File 'lib/obf/utils.rb', line 31

def self.identify_file(path)
  name = File.basename(path) rescue nil
  if name.match(/\.obf$/)
    return :obf
  elsif name.match(/\.obz$/)
    return :obz
  elsif name.match(/\.avz$/)
    return :avz
  else
    json = JSON.parse(File.read(path)) rescue nil
    if json
      if json['format'] && json['format'].match(/^open-board-/)
        return :obf
      end
      return :unknown
    end
    
    begin
      plist = CFPropertyList::List.new(:file => path) rescue nil
      plist_data = CFPropertyList.native_types(plist.value) rescue nil
      if plist_data
        if plist_data['$objects'] && plist_data['$objects'].any?{|o| o['$classname'] == 'SYWord' }
          return :sfy
        end
        return :unknown
      end
    rescue CFFormatError => e
    end
    
    xml = Nokogiri::XML(File.open(path)) rescue nil
    if xml && xml.children.length > 0
      if xml.children[0].name == 'sensorygrid'
        return :sgrid
      end
      return :unknown
    end

    begin
      type = nil
      load_zip(path) do |zipper|
        if zipper.glob('manifest.json').length > 0
          json = JSON.parse(zipper.read('manifest.json')) rescue nil
          if json['root'] && json['format'] && json['format'].match(/^open-board-/)
            type = :obz
          end
        end
        if !type && zipper.glob('*.js').length > 0
          json = JSON.parse(zipper.read('*.js')) rescue nil
          if json['locale'] && json['sheets']
            type = :picto4me
          end
        end
      end
      return type if type
    rescue Zip::Error => e
    end
  end
  return :unknown
end

.image_attrs(path, extension = '') ⇒ Object 



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# File 'lib/obf/utils.rb', line 274

def self.image_attrs(path, extension='')
  res = {}
  if path.match(/^data:/)
    res['content_type'] = path.split(/;/)[0].split(/:/)[1]
    raw = Base64.strict_decode64(path.split(/\,/, 2)[1])
    file = Tempfile.new(['file', extension])
    path = file.path
    file.binmode
    file.write raw
    file.close
  else
    is_file = File.exist?(path) rescue false
    if !is_file
      file = Tempfile.new(['file', extension])
      file.binmode
      file.write path
      path = file.path
      file.close
    end
  end
  data = `identify -verbose #{path}`
  data.split(/\n/).each do |line|
    pre, post = line.sub(/^\s+/, '').split(/:\s/, 2)
    if pre == 'Geometry'
      match = post.match(/(\d+)x(\d+)/)
      if match && match[1] && match[2]
        res['width'] = match[1].to_i
        res['height'] = match[2].to_i
      end
    elsif pre == 'Mime type'
      res['content_type'] = post
    end
  end
  if res['content_type'] && res['content_type'].match(/^image\/svg/)
    res['width'] ||= 300
    res['height'] ||= 300
  end
  res
end

.image_base64(url) ⇒ Object 



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# File 'lib/obf/utils.rb', line 97

def self.image_base64(url)
  image = nil
  if url.match(/:\/\//)
    image = get_url(url)
  else
    types = MIME::Types.type_for(url)
    image = {
      'data' => File.read(url),
      'content_type' => types[0] && types[0].to_s
    }
    if !image['content_type']
      attrs = image_attrs(url)
      image['content_type'] ||= attrs['content_type']
    end
  end
  return nil unless image
  str = "data:" + image['content_type']
  str += ";base64," + Base64.strict_encode64(image['data'])
  str
end

.image_raw(url) ⇒ Object 



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# File 'lib/obf/utils.rb', line 91

def self.image_raw(url)
  image = get_url(url)
  return nil unless image
  image
end

.load_zip(path, &block) ⇒ Object 



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# File 'lib/obf/utils.rb', line 360

def self.load_zip(path, &block)
  require 'zip'

  Zip::File.open(path) do |zipfile|
    block.call(Zipper.new(zipfile))
  end
end

.obf_shell ⇒ Object 



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# File 'lib/obf/utils.rb', line 193

def self.obf_shell
  {
    'format' => 'open-board-0.1',
    'license' => {'type' => 'private'},
    'buttons' => [],
    'grid' => {
      'rows' => 0,
      'columns' => 0,
      'order' => [[]]
    },
    'images' => [],
    'sounds' => []
  }
end

.parse_grid(pre_grid) ⇒ Object 



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# File 'lib/obf/utils.rb', line 256

def self.parse_grid(pre_grid)
  pre_grid ||= {}
  grid = {
    'rows' => pre_grid['rows'] || 1,
    'columns' => pre_grid['columns'] || 1,
    'order' => pre_grid['order'] || [[nil]]
  }
  # TODO: parse order better
  grid
end

.parse_license(pre_license) ⇒ Object 



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# File 'lib/obf/utils.rb', line 243

def self.parse_license(pre_license)
  pre_license = {} unless pre_license.is_a?(Hash)
  license = {}
  ['type', 'copyright_notice_url', 'source_url', 'author_name', 'author_url', 'author_email', 'uneditable'].each do |attr|
    license[attr] = pre_license[attr] if pre_license[attr] != nil
  end
  license['type'] ||= 'private'
  license['copyright_notice_url'] ||= license['copyright_notice_link'] if license.key?('copyright_notice_link')
  license['source_url'] ||= license['source_link'] if license.key?('source_link')
  license['author_url'] ||= license['author_link'] if license.key?('author_link')
  license
end

.parse_obf(obj) ⇒ Object 



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# File 'lib/obf/utils.rb', line 218

def self.parse_obf(obj)
  json = obj
  if obj.is_a?(String)
    json = JSON.parse(obj)
  end
  ['images', 'sounds', 'buttons'].each do |key|
    json["#{key}_hash"] = json[key]
    if json[key].is_a?(Array)
      hash = {}
      json[key].each do |item|
        hash[item['id']] = item
      end
      json["#{key}_hash"] = hash
    elsif json["#{key}_hash"]
      array = []
      json["#{key}_hash"].each do |id, item|
        item['id'] ||= id
        array << item
      end
      json[key] = array
    end
  end
  json
end

.save_image(image, zipper = nil) ⇒ Object 



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# File 'lib/obf/utils.rb', line 118

def self.save_image(image, zipper=nil)
  if image['data']
    if !image['content_type']
      image['content_type'] = image['data'].split(/;/)[0].split(/:/)[1]
    end
  elsif image['path'] && zipper
    image['raw_data'] = zipper.read(image['path'])
    if !image['content_type']
      types = MIME::Types.type_for(image['path'])
      image['content_type'] = types[0] && types[0].to_s
    end
  elsif image['url']
    url_data = get_url(image['url'])
    image['raw_data'] = url_data['data']
    image['content_type'] = url_data['content_type']
  elsif image['symbol']
    # not supported
  end
  type = MIME::Types[image['content_type']]
  type = type && type[0]
  extension = nil
  if type.respond_to?(:preferred_extension)
    extension = type && ("." + type.preferred_extension)
  elsif type.respond_to?(:extensions)
    extension = type && ("." + type.extensions.first)
  end
  file = Tempfile.new(["image_stash", extension.to_s])
  file.binmode
  if image['data']
    str = Base64.strict_decode64(image['data'].split(/\,/, 2)[1])
    file.write str
  elsif image['raw_data']
    file.write image['raw_data']
  else
    file.close
    return nil
  end
  file.close
  if extension && ['image/jpeg', 'image/jpg', 'image/gif'].include?(image['content_type']) && image['width'] && image['width'] < 1000 && image['width'] == image['height']
    # png files need to be converted to make sure they don't have a transparent bg, or
    # else performance takes a huge hit.
    `cp #{file.path} #{file.path}.#{extension}`
    "#{file.path}.#{extension}"
  else
    # TODO: maybe convert to jpg instead of png?
    # see https://github.com/prawnpdf/prawn/issues/324
    # in that case, fill the image with a white background, perhaps?
    `convert #{file.path} -density 1200 -resize 300x300 -background white -gravity center -extent 300x300 #{file.path}.png`
    "#{file.path}.png"
  end
end

.sound_base64(url) ⇒ Object 



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# File 'lib/obf/utils.rb', line 176

def self.sound_base64(url)
  sound = nil
  if url.match(/:\/\//)
    sound = get_url(url)
  else
    types = MIME::Types.type_for(url)
    sound = {
      'data' => File.read(url),
      'content_type' => types[0] && types[0].to_s
    }
  end
  return nil unless sound
  str = "data:" + sound['content_type']
  str += ";base64," + Base64.strict_encode64(sound['data'])
  str
end

.sound_raw(url) ⇒ Object 



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# File 'lib/obf/utils.rb', line 170

def self.sound_raw(url)
  sound = get_url(url)
  return nil unless sound
  sound
end

.temp_path(*args) ⇒ Object 



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# File 'lib/obf/utils.rb', line 267

def self.temp_path(*args)
  file = Tempfile.new(*args)
  res = file.path
  file.unlink
  res
end

.update_current_progress(*args) ⇒ Object 



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# File 'lib/obf/utils.rb', line 379

def self.update_current_progress(*args)
  if Object.const_defined?('Progress') && Progress.respond_to?(:update_current_progress)
    Progress.update_current_progress(*args)
  end
end