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executable file 1467 lines (1279 sloc) 45.234 kB
require 'time'
require 'ostruct'
require 'uri'
require 'rack'
if ENV['SWIFT']
require 'swiftcore/swiftiplied_mongrel'
puts "Using Swiftiplied Mongrel"
elsif ENV['EVENT']
require 'swiftcore/evented_mongrel'
puts "Using Evented Mongrel"
end
module Rack #:nodoc:
class Request #:nodoc:
# Set of request method names allowed via the _method parameter hack. By
# default, all request methods defined in RFC2616 are included, with the
# exception of TRACE and CONNECT.
POST_TUNNEL_METHODS_ALLOWED = %w( PUT DELETE OPTIONS HEAD )
# Return the HTTP request method with support for method tunneling using
# the POST _method parameter hack. If the real request method is POST and
# a _method param is given and the value is one defined in
# +POST_TUNNEL_METHODS_ALLOWED+, return the value of the _method param
# instead.
def request_method
if post_tunnel_method_hack?
params['_method'].upcase
else
@env['REQUEST_METHOD']
end
end
def user_agent
@env['HTTP_USER_AGENT']
end
private
# Return truthfully if the request is a valid verb-over-post hack.
def post_tunnel_method_hack?
@env['REQUEST_METHOD'] == 'POST' &&
POST_TUNNEL_METHODS_ALLOWED.include?(self.POST.fetch('_method', '').upcase)
end
end
module Utils
extend self
end
end
module Sinatra
extend self
VERSION = '0.3.2'
class NotFound < RuntimeError
def self.code ; 404 ; end
end
class ServerError < RuntimeError
def self.code ; 500 ; end
end
Result = Struct.new(:block, :params, :status) unless defined?(Result)
def options
application.options
end
def application
@app ||= Application.new
end
def application=(app)
@app = app
end
def port
application.options.port
end
def host
application.options.host
end
def env
application.options.env
end
# Deprecated: use application instead of build_application.
alias :build_application :application
def server
options.server ||= defined?(Rack::Handler::Thin) ? "thin" : "mongrel"
# Convert the server into the actual handler name
handler = options.server.capitalize
# If the convenience conversion didn't get us anything,
# fall back to what the user actually set.
handler = options.server unless Rack::Handler.const_defined?(handler)
@server ||= eval("Rack::Handler::#{handler}")
end
def run
begin
puts "== Sinatra/#{Sinatra::VERSION} has taken the stage on port #{port} for #{env} with backup by #{server.name}"
server.run(application, {:Port => port, :Host => host}) do |server|
trap(:INT) do
server.stop
puts "\n== Sinatra has ended his set (crowd applauds)"
end
end
rescue Errno::EADDRINUSE => e
puts "== Someone is already performing on port #{port}!"
end
end
class Event
include Rack::Utils
URI_CHAR = '[^/?:,&#\.]'.freeze unless defined?(URI_CHAR)
PARAM = /(:(#{URI_CHAR}+)|\*)/.freeze unless defined?(PARAM)
SPLAT = /(.*?)/
attr_reader :path, :block, :param_keys, :pattern, :options
def initialize(path, options = {}, &b)
@path = URI.encode(path)
@block = b
@param_keys = []
@options = options
splats = 0
regex = @path.to_s.gsub(PARAM) do |match|
if match == "*"
@param_keys << "_splat_#{splats}"
splats += 1
SPLAT.to_s
else
@param_keys << $2
"(#{URI_CHAR}+)"
end
end
@pattern = /^#{regex}$/
end
def invoke(request)
params = {}
if agent = options[:agent]
return unless request.user_agent =~ agent
params[:agent] = $~[1..-1]
end
if host = options[:host]
return unless host === request.host
end
return unless pattern =~ request.path_info.squeeze('/')
path_params = param_keys.zip($~.captures.map{|s| unescape(s) if s}).to_hash
params.merge!(path_params)
splats = params.select { |k, v| k =~ /^_splat_\d+$/ }.sort.map(&:last)
unless splats.empty?
params.delete_if { |k, v| k =~ /^_splat_\d+$/ }
params["splat"] = splats
end
Result.new(block, params, 200)
end
end
class Error
attr_reader :type, :block, :options
def initialize(type, options={}, &block)
@type = type
@block = block
@options = options
end
def invoke(request)
Result.new(block, options, code)
end
def code
if type.respond_to?(:code)
type.code
else
500
end
end
end
class Static
include Rack::Utils
def initialize(app)
@app = app
end
def invoke(request)
path = @app.options.public + unescape(request.path_info)
return unless File.file?(path)
block = Proc.new { send_file path, :disposition => nil }
Result.new(block, {}, 200)
end
end
# Methods for sending files and streams to the browser instead of rendering.
module Streaming
DEFAULT_SEND_FILE_OPTIONS = {
:type => 'application/octet-stream'.freeze,
:disposition => 'attachment'.freeze,
:stream => true,
:buffer_size => 8192
}.freeze
class MissingFile < RuntimeError; end
class FileStreamer
attr_reader :path, :options
def initialize(path, options)
@path, @options = path, options
end
def to_result(cx, *args)
self
end
def each
size = options[:buffer_size]
File.open(path, 'rb') do |file|
while buf = file.read(size)
yield buf
end
end
end
end
protected
# Sends the file by streaming it 8192 bytes at a time. This way the
# whole file doesn't need to be read into memory at once. This makes
# it feasible to send even large files.
#
# Be careful to sanitize the path parameter if it coming from a web
# page. send_file(params[:path]) allows a malicious user to
# download any file on your server.
#
# Options:
# * <tt>:filename</tt> - suggests a filename for the browser to use.
# Defaults to File.basename(path).
# * <tt>:type</tt> - specifies an HTTP content type.
# Defaults to 'application/octet-stream'.
# * <tt>:disposition</tt> - specifies whether the file will be shown
# inline or downloaded. Valid values are 'inline' and 'attachment'
# (default). When set to nil, the Content-Disposition and
# Content-Transfer-Encoding headers are omitted entirely.
# * <tt>:stream</tt> - whether to send the file to the user agent as it
# is read (true) or to read the entire file before sending (false).
# Defaults to true.
# * <tt>:buffer_size</tt> - specifies size (in bytes) of the buffer used
# to stream the file. Defaults to 8192.
# * <tt>:status</tt> - specifies the status code to send with the
# response. Defaults to '200 OK'.
# * <tt>:last_modified</tt> - an optional RFC 2616 formatted date value
# (See Time#httpdate) indicating the last modified time of the file.
# If the request includes an If-Modified-Since header that matches this
# value exactly, a 304 Not Modified response is sent instead of the file.
# Defaults to the file's last modified time.
#
# The default Content-Type and Content-Disposition headers are
# set to download arbitrary binary files in as many browsers as
# possible. IE versions 4, 5, 5.5, and 6 are all known to have
# a variety of quirks (especially when downloading over SSL).
#
# Simple download:
# send_file '/path/to.zip'
#
# Show a JPEG in the browser:
# send_file '/path/to.jpeg',
# :type => 'image/jpeg',
# :disposition => 'inline'
#
# Show a 404 page in the browser:
# send_file '/path/to/404.html,
# :type => 'text/html; charset=utf-8',
# :status => 404
#
# Read about the other Content-* HTTP headers if you'd like to
# provide the user with more information (such as Content-Description).
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11
#
# Also be aware that the document may be cached by proxies and browsers.
# The Pragma and Cache-Control headers declare how the file may be cached
# by intermediaries. They default to require clients to validate with
# the server before releasing cached responses. See
# http://www.mnot.net/cache_docs/ for an overview of web caching and
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9
# for the Cache-Control header spec.
def send_file(path, options = {}) #:doc:
raise MissingFile, "Cannot read file #{path}" unless File.file?(path) and File.readable?(path)
options[:length] ||= File.size(path)
options[:filename] ||= File.basename(path)
options[:type] ||= Rack::File::MIME_TYPES[File.extname(options[:filename])[1..-1]] || 'text/plain'
options[:last_modified] ||= File.mtime(path).httpdate
options[:stream] = true unless options.key?(:stream)
options[:buffer_size] ||= DEFAULT_SEND_FILE_OPTIONS[:buffer_size]
send_file_headers! options
if options[:stream]
throw :halt, [options[:status] || 200, FileStreamer.new(path, options)]
else
File.open(path, 'rb') { |file| throw :halt, [options[:status] || 200, [file.read]] }
end
end
# Send binary data to the user as a file download. May set content type,
# apparent file name, and specify whether to show data inline or download
# as an attachment.
#
# Options:
# * <tt>:filename</tt> - Suggests a filename for the browser to use.
# * <tt>:type</tt> - specifies an HTTP content type.
# Defaults to 'application/octet-stream'.
# * <tt>:disposition</tt> - specifies whether the file will be shown inline
# or downloaded. Valid values are 'inline' and 'attachment' (default).
# * <tt>:status</tt> - specifies the status code to send with the response.
# Defaults to '200 OK'.
# * <tt>:last_modified</tt> - an optional RFC 2616 formatted date value (See
# Time#httpdate) indicating the last modified time of the response entity.
# If the request includes an If-Modified-Since header that matches this
# value exactly, a 304 Not Modified response is sent instead of the data.
#
# Generic data download:
# send_data buffer
#
# Download a dynamically-generated tarball:
# send_data generate_tgz('dir'), :filename => 'dir.tgz'
#
# Display an image Active Record in the browser:
# send_data image.data,
# :type => image.content_type,
# :disposition => 'inline'
#
# See +send_file+ for more information on HTTP Content-* headers and caching.
def send_data(data, options = {}) #:doc:
send_file_headers! options.merge(:length => data.size)
throw :halt, [options[:status] || 200, [data]]
end
private
def send_file_headers!(options)
options = DEFAULT_SEND_FILE_OPTIONS.merge(options)
[:length, :type, :disposition].each do |arg|
raise ArgumentError, ":#{arg} option required" unless options.key?(arg)
end
# Send a "304 Not Modified" if the last_modified option is provided and
# matches the If-Modified-Since request header value.
if last_modified = options[:last_modified]
header 'Last-Modified' => last_modified
throw :halt, [ 304, '' ] if last_modified == request.env['HTTP_IF_MODIFIED_SINCE']
end
headers(
'Content-Length' => options[:length].to_s,
'Content-Type' => options[:type].strip # fixes a problem with extra '\r' with some browsers
)
# Omit Content-Disposition and Content-Transfer-Encoding headers if
# the :disposition option set to nil.
if !options[:disposition].nil?
disposition = options[:disposition].dup || 'attachment'
disposition <<= %(; filename="#{options[:filename]}") if options[:filename]
headers 'Content-Disposition' => disposition, 'Content-Transfer-Encoding' => 'binary'
end
# Fix a problem with IE 6.0 on opening downloaded files:
# If Cache-Control: no-cache is set (which Rails does by default),
# IE removes the file it just downloaded from its cache immediately
# after it displays the "open/save" dialog, which means that if you
# hit "open" the file isn't there anymore when the application that
# is called for handling the download is run, so let's workaround that
header('Cache-Control' => 'private') if headers['Cache-Control'] == 'no-cache'
end
end
# Helper methods for building various aspects of the HTTP response.
module ResponseHelpers
# Immediately halt response execution by redirecting to the resource
# specified. The +path+ argument may be an absolute URL or a path
# relative to the site root. Additional arguments are passed to the
# halt.
#
# With no integer status code, a '302 Temporary Redirect' response is
# sent. To send a permanent redirect, pass an explicit status code of
# 301:
#
# redirect '/somewhere/else', 301
#
# NOTE: No attempt is made to rewrite the path based on application
# context. The 'Location' response header is set verbatim to the value
# provided.
def redirect(path, *args)
status(302)
header 'Location' => path
throw :halt, *args
end
# Access or modify response headers. With no argument, return the
# underlying headers Hash. With a Hash argument, add or overwrite
# existing response headers with the values provided:
#
# headers 'Content-Type' => "text/html;charset=utf-8",
# 'Last-Modified' => Time.now.httpdate,
# 'X-UA-Compatible' => 'IE=edge'
#
# This method also available in singular form (#header).
def headers(header = nil)
@response.headers.merge!(header) if header
@response.headers
end
alias :header :headers
# Set the content type of the response body (HTTP 'Content-Type' header).
#
# The +type+ argument may be an internet media type (e.g., 'text/html',
# 'application/xml+atom', 'image/png') or a Symbol key into the
# Rack::File::MIME_TYPES table.
#
# Media type parameters, such as "charset", may also be specified using the
# optional hash argument:
#
# get '/foo.html' do
# content_type 'text/html', :charset => 'utf-8'
# "<h1>Hello World</h1>"
# end
#
def content_type(type, params={})
type = Rack::File::MIME_TYPES[type.to_s] if type.kind_of?(Symbol)
fail "Invalid or undefined media_type: #{type}" if type.nil?
if params.any?
params = params.collect { |kv| "%s=%s" % kv }.join(', ')
type = [ type, params ].join(";")
end
response.header['Content-Type'] = type
end
# Set the last modified time of the resource (HTTP 'Last-Modified' header)
# and halt if conditional GET matches. The +time+ argument is a Time,
# DateTime, or other object that responds to +to_time+.
#
# When the current request includes an 'If-Modified-Since' header that
# matches the time specified, execution is immediately halted with a
# '304 Not Modified' response.
#
# Calling this method before perfoming heavy processing (e.g., lengthy
# database queries, template rendering, complex logic) can dramatically
# increase overall throughput with caching clients.
def last_modified(time)
time = time.to_time if time.respond_to?(:to_time)
time = time.httpdate if time.respond_to?(:httpdate)
response.header['Last-Modified'] = time
throw :halt, 304 if time == request.env['HTTP_IF_MODIFIED_SINCE']
time
end
# Set the response entity tag (HTTP 'ETag' header) and halt if conditional
# GET matches. The +value+ argument is an identifier that uniquely
# identifies the current version of the resource. The +strength+ argument
# indicates whether the etag should be used as a :strong (default) or :weak
# cache validator.
#
# When the current request includes an 'If-None-Match' header with a
# matching etag, execution is immediately halted. If the request method is
# GET or HEAD, a '304 Not Modified' response is sent. For all other request
# methods, a '412 Precondition Failed' response is sent.
#
# Calling this method before perfoming heavy processing (e.g., lengthy
# database queries, template rendering, complex logic) can dramatically
# increase overall throughput with caching clients.
#
# ==== See Also
# {RFC2616: ETag}[http://w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.19],
# ResponseHelpers#last_modified
def entity_tag(value, strength=:strong)
value =
case strength
when :strong then '"%s"' % value
when :weak then 'W/"%s"' % value
else raise TypeError, "strength must be one of :strong or :weak"
end
response.header['ETag'] = value
# Check for If-None-Match request header and halt if match is found.
etags = (request.env['HTTP_IF_NONE_MATCH'] || '').split(/\s*,\s*/)
if etags.include?(value) || etags.include?('*')
# GET/HEAD requests: send Not Modified response
throw :halt, 304 if request.get? || request.head?
# Other requests: send Precondition Failed response
throw :halt, 412
end
end
alias :etag :entity_tag
end
module RenderingHelpers
def render(renderer, template, options={})
m = method("render_#{renderer}")
result = m.call(resolve_template(renderer, template, options), options)
if layout = determine_layout(renderer, template, options)
result = m.call(resolve_template(renderer, layout, options), options) { result }
end
result
end
def determine_layout(renderer, template, options)
return if options[:layout] == false
layout_from_options = options[:layout] || :layout
resolve_template(renderer, layout_from_options, options, false)
end
private
def resolve_template(renderer, template, options, scream = true)
case template
when String
template
when Proc
template.call
when Symbol
if proc = templates[template]
resolve_template(renderer, proc, options, scream)
else
read_template_file(renderer, template, options, scream)
end
else
nil
end
end
def read_template_file(renderer, template, options, scream = true)
path = File.join(
options[:views_directory] || Sinatra.application.options.views,
"#{template}.#{renderer}"
)
unless File.exists?(path)
raise Errno::ENOENT.new(path) if scream
nil
else
File.read(path)
end
end
def templates
Sinatra.application.templates
end
end
module Erb
def erb(content, options={})
require 'erb'
render(:erb, content, options)
end
private
def render_erb(content, options = {})
locals_opt = options.delete(:locals) || {}
locals_code = ""
locals_hash = {}
locals_opt.each do |key, value|
locals_code << "#{key} = locals_hash[:#{key}]\n"
locals_hash[:"#{key}"] = value
end
body = ::ERB.new(content).src
eval("#{locals_code}#{body}", binding)
end
end
module Haml
def haml(content, options={})
require 'haml'
render(:haml, content, options)
end
private
def render_haml(content, options = {}, &b)
haml_options = (options[:options] || {}).
merge(Sinatra.options.haml || {})
::Haml::Engine.new(content, haml_options).
render(options[:scope] || self, options[:locals] || {}, &b)
end
end
# Generate valid CSS using Sass (part of Haml)
#
# Sass templates can be in external files with <tt>.sass</tt> extension
# or can use Sinatra's in_file_templates. In either case, the file can
# be rendered by passing the name of the template to the +sass+ method
# as a symbol.
#
# Unlike Haml, Sass does not support a layout file, so the +sass+ method
# will ignore both the default <tt>layout.sass</tt> file and any parameters
# passed in as <tt>:layout</tt> in the options hash.
#
# === Sass Template Files
#
# Sass templates can be stored in separate files with a <tt>.sass</tt>
# extension under the view path.
#
# Example:
# get '/stylesheet.css' do
# header 'Content-Type' => 'text/css; charset=utf-8'
# sass :stylesheet
# end
#
# The "views/stylesheet.sass" file might contain the following:
#
# body
# #admin
# :background-color #CCC
# #main
# :background-color #000
# #form
# :border-color #AAA
# :border-width 10px
#
# And yields the following output:
#
# body #admin {
# background-color: #CCC; }
# body #main {
# background-color: #000; }
#
# #form {
# border-color: #AAA;
# border-width: 10px; }
#
#
# NOTE: Haml must be installed or a LoadError will be raised the first time an
# attempt is made to render a Sass template.
#
# See http://haml.hamptoncatlin.com/docs/rdoc/classes/Sass.html for comprehensive documentation on Sass.
module Sass
def sass(content, options = {})
require 'sass'
# Sass doesn't support a layout, so we override any possible layout here
options[:layout] = false
render(:sass, content, options)
end
private
def render_sass(content, options = {})
::Sass::Engine.new(content).render
end
end
# Generating conservative XML content using Builder templates.
#
# Builder templates can be inline by passing a block to the builder method,
# or in external files with +.builder+ extension by passing the name of the
# template to the +builder+ method as a Symbol.
#
# === Inline Rendering
#
# If the builder method is given a block, the block is called directly with
# an +XmlMarkup+ instance and the result is returned as String:
# get '/who.xml' do
# builder do |xml|
# xml.instruct!
# xml.person do
# xml.name "Francis Albert Sinatra",
# :aka => "Frank Sinatra"
# xml.email 'frank@capitolrecords.com'
# end
# end
# end
#
# Yields the following XML:
# <?xml version='1.0' encoding='UTF-8'?>
# <person>
# <name aka='Frank Sinatra'>Francis Albert Sinatra</name>
# <email>Frank Sinatra</email>
# </person>
#
# === Builder Template Files
#
# Builder templates can be stored in separate files with a +.builder+
# extension under the view path. An +XmlMarkup+ object named +xml+ is
# automatically made available to template.
#
# Example:
# get '/bio.xml' do
# builder :bio
# end
#
# The "views/bio.builder" file might contain the following:
# xml.instruct! :xml, :version => '1.1'
# xml.person do
# xml.name "Francis Albert Sinatra"
# xml.aka "Frank Sinatra"
# xml.aka "Ol' Blue Eyes"
# xml.aka "The Chairman of the Board"
# xml.born 'date' => '1915-12-12' do
# xml.text! "Hoboken, New Jersey, U.S.A."
# end
# xml.died 'age' => 82
# end
#
# And yields the following output:
# <?xml version='1.1' encoding='UTF-8'?>
# <person>
# <name>Francis Albert Sinatra</name>
# <aka>Frank Sinatra</aka>
# <aka>Ol&apos; Blue Eyes</aka>
# <aka>The Chairman of the Board</aka>
# <born date='1915-12-12'>Hoboken, New Jersey, U.S.A.</born>
# <died age='82' />
# </person>
#
# NOTE: Builder must be installed or a LoadError will be raised the first
# time an attempt is made to render a builder template.
#
# See http://builder.rubyforge.org/ for comprehensive documentation on
# Builder.
module Builder
def builder(content=nil, options={}, &block)
options, content = content, nil if content.is_a?(Hash)
content = Proc.new { block } if content.nil?
render(:builder, content, options)
end
private
def render_builder(content, options = {}, &b)
require 'builder'
xml = ::Builder::XmlMarkup.new(:indent => 2)
case content
when String
eval(content, binding, '<BUILDER>', 1)
when Proc
content.call(xml)
end
xml.target!
end
end
class EventContext
include Rack::Utils
include ResponseHelpers
include Streaming
include RenderingHelpers
include Erb
include Haml
include Builder
include Sass
attr_accessor :request, :response
attr_accessor :route_params
def initialize(request, response, route_params)
@params = nil
@data = nil
@request = request
@response = response
@route_params = route_params
@response.body = nil
end
def status(value=nil)
response.status = value if value
response.status
end
def body(value=nil)
response.body = value if value
response.body
end
def params
@params ||=
begin
hash = Hash.new {|h,k| h[k.to_s] if Symbol === k}
hash.merge! @request.params
hash.merge! @route_params
hash
end
end
def data
@data ||= params.keys.first
end
def stop(*args)
throw :halt, args
end
def complete(returned)
@response.body || returned
end
def session
request.env['rack.session'] ||= {}
end
def reset!
@params = nil
@data = nil
end
private
def method_missing(name, *args, &b)
if @response.respond_to?(name)
@response.send(name, *args, &b)
else
super
end
end
end
# The Application class represents the top-level working area of a
# Sinatra app. It provides the DSL for defining various aspects of the
# application and implements a Rack compatible interface for dispatching
# requests.
#
# Many of the instance methods defined in this class (#get, #post,
# #put, #delete, #layout, #before, #error, #not_found, etc.) are
# available at top-level scope. When invoked from top-level, the
# messages are forwarded to the "default application" (accessible
# at Sinatra::application).
class Application
# Hash of event handlers with request method keys and
# arrays of potential handlers as values.
attr_reader :events
# Hash of error handlers with error status codes as keys and
# handlers as values.
attr_reader :errors
# Hash of template name mappings.
attr_reader :templates
# Hash of filters with event name keys (:before) and arrays of
# handlers as values.
attr_reader :filters
# Array of objects to clear during reload. The objects in this array
# must respond to :clear.
attr_reader :clearables
# Object including open attribute methods for modifying Application
# configuration.
attr_reader :options
# List of methods available from top-level scope. When invoked from
# top-level the method is forwarded to the default application
# (Sinatra::application).
FORWARD_METHODS = %w[
get put post delete head template layout before error not_found
configures configure set set_options set_option enable disable use
development? test? production?
]
# Create a new Application with a default configuration taken
# from the default_options Hash.
#
# NOTE: A default Application is automatically created the first
# time any of Sinatra's DSL related methods is invoked so there
# is typically no need to create an instance explicitly. See
# Sinatra::application for more information.
def initialize
@reloading = false
@clearables = [
@events = Hash.new { |hash, key| hash[key] = [] },
@errors = Hash.new,
@filters = Hash.new { |hash, key| hash[key] = [] },
@templates = Hash.new,
@middleware = []
]
@options = OpenStruct.new(self.class.default_options)
load_default_configuration!
end
# Hash of default application configuration options. When a new
# Application is created, the #options object takes its initial values
# from here.
#
# Changes to the default_options Hash effect only Application objects
# created after the changes are made. For this reason, modifications to
# the default_options Hash typically occur at the very beginning of a
# file, before any DSL related functions are invoked.
def self.default_options
return @default_options unless @default_options.nil?
root = File.expand_path(File.dirname($0))
@default_options = {
:run => true,
:port => 4567,
:host => '0.0.0.0',
:env => :development,
:root => root,
:views => root + '/views',
:public => root + '/public',
:sessions => false,
:logging => true,
:app_file => $0,
:raise_errors => false
}
load_default_options_from_command_line!
@default_options
end
# Search ARGV for command line arguments and update the
# Sinatra::default_options Hash accordingly. This method is
# invoked the first time the default_options Hash is accessed.
# NOTE: Ignores --name so unit/spec tests can run individually
def self.load_default_options_from_command_line! #:nodoc:
# fixes issue with: gem install --test sinatra
return if ARGV.empty? || File.basename($0) =~ /gem/
require 'optparse'
OptionParser.new do |op|
op.on('-p port') { |port| default_options[:port] = port }
op.on('-e env') { |env| default_options[:env] = env.to_sym }
op.on('-x') { default_options[:mutex] = true }
op.on('-s server') { |server| default_options[:server] = server }
end.parse!(ARGV.dup.select { |o| o !~ /--name/ })
end
# Determine whether the application is in the process of being
# reloaded.
def reloading?
@reloading == true
end
# Yield to the block for configuration if the current environment
# matches any included in the +envs+ list. Always yield to the block
# when no environment is specified.
#
# NOTE: configuration blocks are not executed during reloads.
def configures(*envs, &b)
return if reloading?
yield self if envs.empty? || envs.include?(options.env)
end
alias :configure :configures
# When both +option+ and +value+ arguments are provided, set the option
# specified. With a single Hash argument, set all options specified in
# Hash. Options are available via the Application#options object.
#
# Setting individual options:
# set :port, 80
# set :env, :production
# set :views, '/path/to/views'
#
# Setting multiple options:
# set :port => 80,
# :env => :production,
# :views => '/path/to/views'
#
def set(option, value=self)
if value == self && option.kind_of?(Hash)
option.each { |key,val| set(key, val) }
else
options.send("#{option}=", value)
end
end
alias :set_option :set
alias :set_options :set
# Enable the options specified by setting their values to true. For
# example, to enable sessions and logging:
# enable :sessions, :logging
def enable(*opts)
opts.each { |key| set(key, true) }
end
# Disable the options specified by setting their values to false. For
# example, to disable logging and automatic run:
# disable :logging, :run
def disable(*opts)
opts.each { |key| set(key, false) }
end
# Define an event handler for the given request method and path
# spec. The block is executed when a request matches the method
# and spec.
#
# NOTE: The #get, #post, #put, and #delete helper methods should
# be used to define events when possible.
def event(method, path, options = {}, &b)
events[method].push(Event.new(path, options, &b)).last
end
# Define an event handler for GET requests.
def get(path, options={}, &b)
event(:get, path, options, &b)
end
# Define an event handler for POST requests.
def post(path, options={}, &b)
event(:post, path, options, &b)
end
# Define an event handler for HEAD requests.
def head(path, options={}, &b)
event(:head, path, options, &b)
end
# Define an event handler for PUT requests.
#
# NOTE: PUT events are triggered when the HTTP request method is
# PUT and also when the request method is POST and the body includes a
# "_method" parameter set to "PUT".
def put(path, options={}, &b)
event(:put, path, options, &b)
end
# Define an event handler for DELETE requests.
#
# NOTE: DELETE events are triggered when the HTTP request method is
# DELETE and also when the request method is POST and the body includes a
# "_method" parameter set to "DELETE".
def delete(path, options={}, &b)
event(:delete, path, options, &b)
end
# Visits and invokes each handler registered for the +request_method+ in
# definition order until a Result response is produced. If no handler
# responds with a Result, the NotFound error handler is invoked.
#
# When the request_method is "HEAD" and no valid Result is produced by
# the set of handlers registered for HEAD requests, an attempt is made to
# invoke the GET handlers to generate the response before resorting to the
# default error handler.
def lookup(request)
method = request.request_method.downcase.to_sym
events[method].eject(&[:invoke, request]) ||
(events[:get].eject(&[:invoke, request]) if method == :head) ||
errors[NotFound].invoke(request)
end
# Define a named template. The template may be referenced from
# event handlers by passing the name as a Symbol to rendering
# methods. The block is executed each time the template is rendered
# and the resulting object is passed to the template handler.
#
# The following example defines a HAML template named hello and
# invokes it from an event handler:
#
# template :hello do
# "h1 Hello World!"
# end
#
# get '/' do
# haml :hello
# end
#
def template(name, &b)
templates[name] = b
end
# Define a layout template.
def layout(name=:layout, &b)
template(name, &b)
end
# Define a custom error handler for the exception class +type+. The block
# is invoked when the specified exception type is raised from an error
# handler and can manipulate the response as needed:
#
# error MyCustomError do
# status 500
# 'So what happened was...' + request.env['sinatra.error'].message
# end
#
# The Sinatra::ServerError handler is used by default when an exception
# occurs and no matching error handler is found.
def error(type=ServerError, options = {}, &b)
errors[type] = Error.new(type, options, &b)
end
# Define a custom error handler for '404 Not Found' responses. This is a
# shorthand for:
# error NotFound do
# ..
# end
def not_found(options={}, &b)
error NotFound, options, &b
end
# Define a request filter. When <tt>type</tt> is <tt>:before</tt>, execute the
# block in the context of each request before matching event handlers.
def filter(type, &b)
filters[type] << b
end
# Invoke the block in the context of each request before invoking
# matching event handlers.
def before(&b)
filter :before, &b
end
# True when environment is :development.
def development? ; options.env == :development ; end
# True when environment is :test.
def test? ; options.env == :test ; end
# True when environment is :production.
def production? ; options.env == :production ; end
# Clear all events, templates, filters, and error handlers
# and then reload the application source file. This occurs
# automatically before each request is processed in development.
def reload!
clearables.each(&:clear)
load_default_configuration!
load_development_configuration! if development?
@pipeline = nil
@reloading = true
Kernel.load options.app_file
@reloading = false
end
# Determine whether the application is in the process of being
# reloaded.
def reloading?
@reloading == true
end
# Mutex instance used for thread synchronization.
def mutex
@@mutex ||= Mutex.new
end
# Yield to the block with thread synchronization
def run_safely
if development? || options.mutex
mutex.synchronize { yield }
else
yield
end
end
# Add a piece of Rack middleware to the pipeline leading to the
# application.
def use(klass, *args, &block)
fail "#{klass} must respond to 'new'" unless klass.respond_to?(:new)
@pipeline = nil
@middleware.push([ klass, args, block ]).last
end
private
# Rack middleware derived from current state of application options.
# These components are plumbed in at the very beginning of the
# pipeline.
def optional_middleware
[
([ Rack::CommonLogger, [], nil ] if options.logging),
([ Rack::Session::Cookie, [], nil ] if options.sessions)
].compact
end
# Rack middleware explicitly added to the application with #use. These
# components are plumbed into the pipeline downstream from
# #optional_middle.
def explicit_middleware
@middleware
end
# All Rack middleware used to construct the pipeline.
def middleware
optional_middleware + explicit_middleware
end
public
# An assembled pipeline of Rack middleware that leads eventually to
# the Application#invoke method. The pipeline is built upon first
# access. Defining new middleware with Application#use or manipulating
# application options may cause the pipeline to be rebuilt.
def pipeline
@pipeline ||=
middleware.inject(method(:dispatch)) do |app,(klass,args,block)|
klass.new(app, *args, &block)
end
end
# Rack compatible request invocation interface.
def call(env)
run_safely do
reload! if development? && (options.reload != false)
pipeline.call(env)
end
end
# Request invocation handler - called at the end of the Rack pipeline
# for each request.
#
# 1. Create Rack::Request, Rack::Response helper objects.
# 2. Lookup event handler based on request method and path.
# 3. Create new EventContext to house event handler evaluation.
# 4. Invoke each #before filter in context of EventContext object.
# 5. Invoke event handler in context of EventContext object.
# 6. Return response to Rack.
#
# See the Rack specification for detailed information on the
# +env+ argument and return value.
def dispatch(env)
request = Rack::Request.new(env)
context = EventContext.new(request, Rack::Response.new([], 200), {})
begin
returned =
catch(:halt) do
filters[:before].each { |f| context.instance_eval(&f) }
result = lookup(context.request)
context.route_params = result.params
context.response.status = result.status
context.reset!
[:complete, context.instance_eval(&result.block)]
end
body = returned.to_result(context)
rescue => e
request.env['sinatra.error'] = e
context.status(500)
raise if options.raise_errors && e.class != NotFound
result = (errors[e.class] || errors[ServerError]).invoke(request)
returned =
catch(:halt) do
[:complete, context.instance_eval(&result.block)]
end
body = returned.to_result(context)
end
body = '' unless body.respond_to?(:each)
body = '' if request.env["REQUEST_METHOD"].upcase == 'HEAD'
context.body = body.kind_of?(String) ? [*body] : body
context.finish
end
private
# Called immediately after the application is initialized or reloaded to
# register default events, templates, and error handlers.
def load_default_configuration!
events[:get] << Static.new(self)
configure do
error do
'<h1>Internal Server Error</h1>'
end
not_found { '<h1>Not Found</h1>'}
end
end
# Called before reloading to perform development specific configuration.
def load_development_configuration!
get '/sinatra_custom_images/:image.png' do
content_type :png
File.read(File.dirname(__FILE__) + "/../images/#{params[:image]}.png")
end
not_found do
(<<-HTML).gsub(/^ {8}/, '')
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body {text-align:center;color:#888;font-family:arial;font-size:22px;margin:20px;}
#content {margin:0 auto;width:500px;text-align:left}
</style>
</head>
<body>
<h2>Sinatra doesn't know this diddy.</h2>
<img src='/sinatra_custom_images/404.png'>
<div id="content">
Try this:
<pre>#{request.request_method.downcase} "#{request.path_info}" do\n .. do something ..\nend<pre>
</div>
</body>
</html>
HTML
end
error do
@error = request.env['sinatra.error']
(<<-HTML).gsub(/^ {8}/, '')
<!DOCTYPE html>
<html>
<head>
<style type="text/css" media="screen">
body {font-family:verdana;color:#333}
#content {width:700px;margin-left:20px}
#content h1 {width:99%;color:#1D6B8D;font-weight:bold}
#stacktrace {margin-top:-20px}
#stacktrace pre {font-size:12px;border-left:2px solid #ddd;padding-left:10px}
#stacktrace img {margin-top:10px}
</style>
</head>
<body>
<div id="content">
<img src="/sinatra_custom_images/500.png">
<div class="info">
Params: <pre>#{params.inspect}</pre>
</div>
<div id="stacktrace">
<h1>#{escape_html(@error.class.name + ' - ' + @error.message.to_s)}</h1>
<pre><code>#{escape_html(@error.backtrace.join("\n"))}</code></pre>
</div>
</div>
</body>
</html>
HTML
end
end
end
end
# Delegate DSLish methods to the currently active Sinatra::Application
# instance.
Sinatra::Application::FORWARD_METHODS.each do |method|
eval(<<-EOS, binding, '(__DSL__)', 1)
def #{method}(*args, &b)
Sinatra.application.#{method}(*args, &b)
end
EOS
end
def helpers(&b)
Sinatra::EventContext.class_eval(&b)
end
def use_in_file_templates!
require 'stringio'
templates = IO.read(caller.first.split(':').first).split('__FILE__').last
data = StringIO.new(templates)
current_template = nil
data.each do |line|
if line =~ /^@@\s?(.*)/
current_template = $1.to_sym
Sinatra.application.templates[current_template] = ''
elsif current_template
Sinatra.application.templates[current_template] << line
end
end
end
def mime(ext, type)
Rack::File::MIME_TYPES[ext.to_s] = type
end
### Misc Core Extensions
module Kernel
def silence_warnings
old_verbose, $VERBOSE = $VERBOSE, nil
yield
ensure
$VERBOSE = old_verbose
end
end
class Symbol
def to_proc
Proc.new { |*args| args.shift.__send__(self, *args) }
end
end
class Array
def to_hash
self.inject({}) { |h, (k, v)| h[k] = v; h }
end
def to_proc
Proc.new { |*args| args.shift.__send__(self[0], *(args + self[1..-1])) }
end
end
module Enumerable
def eject(&block)
find { |e| result = block[e] and break result }
end
end
### Core Extension results for throw :halt
class Proc
def to_result(cx, *args)
cx.instance_eval(&self)
args.shift.to_result(cx, *args)
end
end
class String
def to_result(cx, *args)
args.shift.to_result(cx, *args)
self
end
end
class Array
def to_result(cx, *args)
self.shift.to_result(cx, *self)
end
end
class Symbol
def to_result(cx, *args)
cx.send(self, *args)
end
end
class Fixnum
def to_result(cx, *args)
cx.status self
args.shift.to_result(cx, *args)
end
end
class NilClass
def to_result(cx, *args)
''
end
end
at_exit do
raise $! if $!
Sinatra.run if Sinatra.application.options.run
end
mime :xml, 'application/xml'
mime :js, 'application/javascript'
mime :png, 'image/png'
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