proof of concept
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hyde.rb
66
hyde.rb
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@ -1,6 +1,23 @@
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require 'mime-types'
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require 'webrick'
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module Hyde
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# 404 text
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def default404(filepath)
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return "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\">
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<HTML>
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<HEAD><TITLE>File not found</TITLE></HEAD>
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<BODY>
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<H1>File not found</H1>
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#{filepath}
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<HR>
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<ADDRESS>
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Hyde on WEBrick/#{WEBrick::VERSION} (Ruby/#{RUBY_VERSION}/#{RUBY_RELEASE_DATE})
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</ADDRESS>
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</BODY>
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</HTML>"
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end
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module_function :default404
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# Interchangeable pattern matching
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module PatternMatching
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def prep_path(path,safe_regex: true)
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@ -47,50 +64,54 @@ module Hyde
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end
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# Methods to control requests, accessible from within blocks
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module PublicRequestControlMethods
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module PublicContextControlMethods
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def redirect(url)
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puts "Unimplemented method 'redirect' called"
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return
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end
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end
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# Request control class
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class Request
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# Request wrapper class
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class Context
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def initialize(path,request,response)
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@path = path
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@filepath = ""
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@request = request
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@response = response
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@handles = {}
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end
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attr_reader :request
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attr_reader :response
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attr_accessor :filepath
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attr_accessor :path
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attr_accessor :handles
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end
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# Request object with safe path encapsulation
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class ProtectedRequest < Request
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# Context object with safe path encapsulation
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class ProtectedContext < Context
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def initialize(request)
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@path = request.path
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@filepath = request.filepath
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@request = request.request
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@response = request.response
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@handles = request.handles
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end
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undef :path=
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undef :filepath=
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undef :handles=
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end
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# Handler classes
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class Probe
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include Hyde::PatternMatching
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include Hyde::PublicRequestControlMethods
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include Hyde::PublicContextControlMethods
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def initialize (path, safe_regex: true, &block_optional)
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prep_path path, safe_regex: safe_regex
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@block = block_optional
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end
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def match(request)
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if @block and (match? request.path) then
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@current_request = Hyde::ProtectedRequest.new(request)
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@current_request = Hyde::ProtectedContext.new(request)
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@lock_methods = true
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return_later = self.instance_exec @current_request, &@block
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@lock_methods = false
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@ -105,10 +126,21 @@ module Hyde
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if match? request.path then
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match_path = normalize_input(request.path).match(@path)[0]
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filepath = request.filepath+match_path
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begin
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mimetype = MIME::Types.type_for(filepath)
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file = File.new filepath, "r"
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data = file.read()
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# TODO: Finish this
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request.response.body = data
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request.response["Content-Type"] = mimetype
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rescue Errno::ENOENT
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if request.handles.include? 404 then
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request.response.body = request.handles[404].call filepath
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request.response["Content-Type"] = "text/html"
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else
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request.response.body = Hyde::default404 filepath
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end
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end
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end
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end
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end
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@ -124,7 +156,8 @@ module Hyde
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module Handlers
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{
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probe: Hyde::Probe,
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printProbe: Hyde::PrintProbe
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printProbe: Hyde::PrintProbe,
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serve: Hyde::Serve
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}.each_pair { |name, newclass|
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define_method name do |path, *a, **b, &block|
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if path.kind_of? Array then
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@ -144,6 +177,7 @@ module Hyde
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def initialize (path, root_path: nil, safe_regex: true, &block)
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prep_path path, safe_regex: safe_regex
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@chain = []
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@handles = {}
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@root_override = root_path
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@remap = false
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@lock_methods = true
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@ -170,6 +204,9 @@ module Hyde
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@lock_methods = true
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@remap = true
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end
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def handle(code, &block)
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@handles[code] = block
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end
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def match(request)
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raise Exception, "Not permitted" if @lock_methods
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if match? request.path then
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@ -183,8 +220,19 @@ module Hyde
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else
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request.filepath = request.filepath+next_path+"/"
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end
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@handles.each_pair { |k,v| request.handles[k] = v }
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next_pathspec = @chain.find { |x| x.match? cut_path }
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next_pathspec.match request if next_pathspec
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unless next_pathspec then
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if request.handles.include? 404
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request.response.body = request.handles[404].call(
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request.filepath+"/"+cut_path
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)
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else
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request.response.body = Hyde::default404(request.filepath+cut_path)
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end
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request.response["Content-Type"] = 'text/html'
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end
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end
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end
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end
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@ -0,0 +1,26 @@
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require 'webrick'
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require_relative 'hyde'
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server = WEBrick::HTTPServer.new :Port => 8000
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trap 'INT' do server.shutdown end
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server.mount_proc '/' do |req,res|
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Hyde::Pathspec.new '/' do
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serve "index.html" do |ctx|
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ctx.response.body = "This is a test of webrick+hyde combination
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If you're seeing this, this means it's a success"
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ctx.response["Content-Type"] = "text/plain"
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end
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path "about" do
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serve "webrick" do |ctx|
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ctx.response.body = "WEBrick is weird and pretty undocumented"
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ctx.response["Content-Type"] = "text/plain"
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end
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serve "hyde" do |ctx|
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ctx.response.body = "Hyde was born because i thought Sinatra is cool, but nested paths are even cooler"
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ctx.response["Content-Type"] = "text/plain"
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end
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end
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end.match(Hyde::Context.new(req.path, req, res))
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end
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server.start
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