Class: Wovnrb::Headers

Inherits:
Object
  • Object
show all
Defined in:
lib/wovnrb/headers.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(env, settings) ⇒ Headers

Generates new instance of Wovnrb::Headers. Its parameters are set by parsing env variable.



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# File 'lib/wovnrb/headers.rb', line 16

def initialize(env, settings)
  @env = env
  @settings = settings
  @protocol = @env['rack.url_scheme']
  if settings['use_proxy'] && @env.has_key?('HTTP_X_FORWARDED_HOST')
    @unmasked_host = @env['HTTP_X_FORWARDED_HOST']
  else
    @unmasked_host = @env['HTTP_HOST']
  end
  unless @env.has_key?('REQUEST_URI')
    # Add '/' to PATH_INFO as a possible fix for pow server
    @env['REQUEST_URI'] = (@env['PATH_INFO'] =~ /^[^\/]/ ? '/' : '') + @env['PATH_INFO'] + (@env['QUERY_STRING'].size == 0 ? '' : "?#{@env['QUERY_STRING']}")
  end
  # REQUEST_URI is expected to not contain the server name
  # heroku contains http://...
  if @env['REQUEST_URI'] =~ /:\/\//
    @env['REQUEST_URI'] = @env['REQUEST_URI'].sub(/^.*:\/\/[^\/]+/, '')
  end
  @unmasked_pathname = @env['REQUEST_URI'].split('?')[0]
  @unmasked_pathname += '/' unless @unmasked_pathname =~ /\/$/ || @unmasked_pathname =~ /\/[^\/.]+\.[^\/.]+$/
  @unmasked_url = "#{@protocol}://#{@unmasked_host}#{@unmasked_pathname}"
  if settings['use_proxy'] && @env.has_key?('HTTP_X_FORWARDED_HOST')
    @host = @env['HTTP_X_FORWARDED_HOST']
  else
    @host = @env['HTTP_HOST']
  end
  @host = settings['url_pattern'] == 'subdomain' ? remove_lang(@host, self.lang_code) : @host
  @pathname, @query = @env['REQUEST_URI'].split('?')
  @pathname = settings['url_pattern'] == 'path' ? remove_lang(@pathname, self.lang_code) : @pathname
  @query = @query || ''
  @url = "#{@host}#{@pathname}#{(@query.length > 0 ? '?' : '') + remove_lang(@query, self.lang_code)}"
  if settings['query'].length > 0
    query_vals = []
    settings['query'].each do |qv|
      rx = Regexp.new("(^|&)(?<query_val>#{qv}[^&]+)(&|$)")
      m = @query.match(rx)
      if m && m[:query_val]
        query_vals.push(m[:query_val])
      end
    end
    if query_vals.length > 0
      @query = "?#{query_vals.sort.join('&')}"
    else
      @query = ''
    end
  else
    @query = ''
  end
  @query = remove_lang(@query, self.lang_code)
  @pathname = @pathname.gsub(/\/$/, '')
  @redis_url = "#{@host}#{@pathname}#{@query}"
end

Instance Attribute Details

#host ⇒ Object (readonly)

Returns the value of attribute host.



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# File 'lib/wovnrb/headers.rb', line 8

def host
  @host
end

#pathname ⇒ Object (readonly)

Returns the value of attribute pathname.



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# File 'lib/wovnrb/headers.rb', line 10

def pathname
  @pathname
end

#protocol ⇒ Object (readonly)

Returns the value of attribute protocol.



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# File 'lib/wovnrb/headers.rb', line 6

def protocol
  @protocol
end

#redis_url ⇒ Object (readonly)

Returns the value of attribute redis_url.



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# File 'lib/wovnrb/headers.rb', line 11

def redis_url
  @redis_url
end

#unmasked_host ⇒ Object (readonly)

Returns the value of attribute unmasked_host.



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# File 'lib/wovnrb/headers.rb', line 7

def unmasked_host
  @unmasked_host
end

#unmasked_pathname ⇒ Object (readonly)

Returns the value of attribute unmasked_pathname.



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# File 'lib/wovnrb/headers.rb', line 9

def unmasked_pathname
  @unmasked_pathname
end

#unmasked_url ⇒ Object (readonly)

Returns the value of attribute unmasked_url.



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# File 'lib/wovnrb/headers.rb', line 4

def unmasked_url
  @unmasked_url
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/wovnrb/headers.rb', line 5

def url
  @url
end

Instance Method Details

#browser_lang ⇒ Object 



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# File 'lib/wovnrb/headers.rb', line 98

def browser_lang
  if @browser_lang.nil?
    match = (@env['HTTP_COOKIE'] || '').match(/wovn_selected_lang\s*=\s*(?<lang>[^;\s]+)/)
    if match && match[:lang] && Lang.get_lang(match[:lang])
      @browser_lang = match[:lang]
    else
# IS THIS RIGHT?
      @browser_lang = ''
      accept_langs = (@env['HTTP_ACCEPT_LANGUAGE'] || '').split(/[,;]/)
      accept_langs.each do |l|
        if Lang.get_lang(l)
          @browser_lang = l
          break
        end
      end
    end
  end
  return @browser_lang
end

#lang_code ⇒ String

Get the language code of the current request

Returns:

  • (String) —

    The lang code of the current page



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# File 'lib/wovnrb/headers.rb', line 72

def lang_code
  (self.path_lang && self.path_lang.length > 0) ? self.path_lang : @settings['default_lang']
end

#out(headers) ⇒ Object 



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# File 'lib/wovnrb/headers.rb', line 206

def out(headers)
  r = Regexp.new("//" + @host)
  if headers.has_key?("Location") && headers["Location"] =~ r
    case @settings['url_pattern']
    when 'query'
      if headers["Location"] =~ /\?/
        headers["Location"] += "&"
      else
        headers["Location"] += "?"
      end
      headers['Location'] += "wovn=#{self.lang_code}"
    when 'subdomain'
      headers["Location"] = headers["Location"].sub(/\/\/([^.]+)/, '//' + self.lang_code + '.\1')
   #when 'path'
    else
      headers["Location"] = headers['Location'].sub(/(\/\/[^\/]+)/, '\1/' + self.lang_code)
    end
  end
  headers
end

#path_lang ⇒ String

picks up language code from requested URL by using url_pattern_reg setting. when language code is invalid, this method returns empty string. if you want examples, please see test/lib/headers_test.rb.

Returns:

  • (String) —

    language code in requrested URL.



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# File 'lib/wovnrb/headers.rb', line 81

def path_lang
  if @path_lang.nil?
    rp = Regexp.new(@settings['url_pattern_reg'])
    if @settings['use_proxy'] && @env.has_key?('HTTP_X_FORWARDED_HOST')
      match = "#{@env['HTTP_X_FORWARDED_HOST']}#{@env['REQUEST_URI']}".match(rp)
    else
      match = "#{@env['SERVER_NAME']}#{@env['REQUEST_URI']}".match(rp)
    end
    if match && match[:lang] && Lang.get_lang(match[:lang])
      @path_lang = Lang.get_code(match[:lang])
    else
      @path_lang = ''
    end
  end
  return @path_lang
end

#redirect(lang = self.browser_lang) ⇒ Object 



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# File 'lib/wovnrb/headers.rb', line 118

def redirect(lang=self.browser_lang)
  redirect_headers = {}
  redirect_headers['location'] = self.redirect_location(lang)
  redirect_headers['content-length'] = '0'
  return redirect_headers
end

#redirect_location(lang) ⇒ Object 



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# File 'lib/wovnrb/headers.rb', line 125

def redirect_location(lang)
  if lang == @settings['default_lang']
# IS THIS RIGHT??
    return "#{self.protocol}://#{self.url}"
    #return remove_lang("#{@env['HTTP_HOST']}#{@env['REQUEST_URI']}", lang)
  else
    location = self.url
    case @settings['url_pattern']
    when 'query'
      if location !~ /\?/
        location = "#{location}?wovn=#{lang}"
      else @env['REQUEST_URI'] !~ /(\?|&)wovn=/
        location = "#{location}&wovn=#{lang}"
      end
    when 'subdomain'
      location = "#{lang.downcase}.#{location}"
   #when 'path'
    else
      location = location.sub(/(\/|$)/, "/#{lang}/");
    end
    return "#{self.protocol}://#{location}"
  end
end

#remove_lang(uri, lang = self.path_lang) ⇒ String

Remove language code from the URI.

Parameters:

  • uri (String) —

    original URI

  • lang (String) (defaults to: self.path_lang) —

    language code

Returns:

  • (String) —

    removed URI



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# File 'lib/wovnrb/headers.rb', line 187

def remove_lang(uri, lang=self.path_lang)

  # Do nothing if lang is empty.
  if lang.nil? || lang.empty?
    return uri
  end

  case @settings['url_pattern']
  when 'query'
    return uri.sub(/(^|\?|&)wovn=#{lang}(&|$)/, '\1').gsub(/(\?|&)$/, '')
  when 'subdomain'
    rp = Regexp.new('(^|(//))' + lang + '\.', 'i')
    return uri.sub(rp, '\1')
 #when 'path'
  else
    return uri.sub(/\/#{lang}(\/|$)/, '/')
  end
end

#request_out(def_lang = ) ⇒ Object 



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# File 'lib/wovnrb/headers.rb', line 149

def request_out(def_lang=@settings['default_lang'])
  case @settings['url_pattern']
  when 'query'
    @env['REQUEST_URI'] = remove_lang(@env['REQUEST_URI']) if @env.has_key?('REQUEST_URI')
    @env['QUERY_STRING'] = remove_lang(@env['QUERY_STRING']) if @env.has_key?('QUERY_STRING')
    @env['ORIGINAL_FULLPATH'] = remove_lang(@env['ORIGINAL_FULLPATH']) if @env.has_key?('ORIGINAL_FULLPATH')
  when 'subdomain'
    if @settings['use_proxy'] && @env.has_key?('HTTP_X_FORWARDED_HOST')
      @env['HTTP_X_FORWARDED_HOST'] = remove_lang(@env['HTTP_X_FORWARDED_HOST'])
    else
      @env["HTTP_HOST"] = remove_lang(@env["HTTP_HOST"])
      @env["SERVER_NAME"] = remove_lang(@env["SERVER_NAME"])
    end
    if @env.has_key?('HTTP_REFERER')
      @env["HTTP_REFERER"] = remove_lang(@env["HTTP_REFERER"])
    end
 #when 'path'
  else
    @env['REQUEST_URI'] = remove_lang(@env['REQUEST_URI'])
    if @env.has_key?('REQUEST_PATH')
      @env['REQUEST_PATH'] = remove_lang(@env['REQUEST_PATH'])
    end
    @env['PATH_INFO'] = remove_lang(@env['PATH_INFO'])
    if @env.has_key?('ORIGINAL_FULLPATH')
      @env['ORIGINAL_FULLPATH'] = remove_lang(@env['ORIGINAL_FULLPATH'])
    end
    if @env.has_key?('HTTP_REFERER')
      @env["HTTP_REFERER"] = remove_lang(@env["HTTP_REFERER"])
    end
  end
  @env
end