Added directory bouncing, status code handlers and pipelining
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parent
55e87603e5
commit
447f51570a
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@ -0,0 +1,18 @@
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# frozen_string_literal: true
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$LOAD_PATH.unshift("#{File.dirname(__FILE__)}/lib")
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require 'landline'
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app = Landline::Server.new do
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path "/hello" do
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bounce
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get "/world" do
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"Hello world!"
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end
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end
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get "/hello/user" do
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"Hello user!"
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end
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end
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run app
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@ -0,0 +1,27 @@
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# frozen_string_literal: true
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$LOAD_PATH.unshift("#{File.dirname(__FILE__)}/lib")
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require 'landline'
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app = Landline::Server.new do
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get "/hello" do
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header "content-type", "text/plain"
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"Hello World!"
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end
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get "/error" do
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raise StandardError, "I raised an error! (and that's very sad)"
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end
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handle do |status, backtrace: nil|
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page = ([Landline::Util::HTTP_STATUS[status]] +
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(backtrace || [""])).join("\n")
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[
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{
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"content-length": page.bytesize,
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"content-type": "text/plain"
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},
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page
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]
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end
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end
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run app
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@ -0,0 +1,3 @@
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#
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# ~/.bash_logout
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#
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@ -0,0 +1,5 @@
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#
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# ~/.bash_profile
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#
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[[ -f ~/.bashrc ]] && . ~/.bashrc
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@ -0,0 +1,10 @@
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#
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# ~/.bashrc
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#
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# If not running interactively, don't do anything
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[[ $- != *i* ]] && return
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# alias ls='ls --color=auto'
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# alias grep='grep --color=auto'
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# PS1='[\u@\h \W]\$ '
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Binary file not shown.
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@ -0,0 +1,27 @@
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# frozen_string_literal: true
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$LOAD_PATH.unshift("#{File.dirname(__FILE__)}/lib")
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require 'landline'
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app = Landline::Server.new do
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root ENV["PWD"]
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index ["index.html"]
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post "/" do
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formdata = form if form?
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files = {}
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if formdata
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formdata["form_files"].each do |file|
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filename = file.filename.split("/").last
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`mv #{file.tempfile.path} $PWD/files/#{filename}`
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files[file.filename] = "<a href=\"files/#{filename}\">#{filename}</a>"
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end
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end
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erubi(file("index.rhtml"), { formdata: files }).run
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end
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serve "/files/*"
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get "/" do
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erubi(file("index.rhtml")).run
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end
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end
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run app
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@ -0,0 +1,31 @@
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<!DOCTYPE>
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<html>
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<head>
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<title>Form upload test</title>
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<style>
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.form { display: flex; flex-direction: column }
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</style>
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</head>
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<body>
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<h1>File uploader</h1>
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<hr/>
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<p> Add files here: <p>
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<form method="post"
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class="form"
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enctype="multipart/form-data">
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<input id="form_files" type="file" name="form_files[]" multiple>
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<label for="form_files">Attach file</label>
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<input type="submit" value="Send form">
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</form>
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<% if (defined? formdata) and formdata %>
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<hr>
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<ul>
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<% formdata.each do |key, part| %>
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<li><%= key %>: <%= part %></li>
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<% end %>
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</ul>
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<% end %>
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</body>
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</html>
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@ -0,0 +1 @@
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../../lib
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@ -0,0 +1 @@
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Example of handling forms in Landline
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@ -5,6 +5,26 @@ module Landline
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module DSL
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# Common path methods
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module PathMethods
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# Bounce request if no handler found instead of issuing 404
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def bounce
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@origin.bounce = true
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end
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# Create a status code handler on path.
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# Recursively applies to all paths unless overridden.
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# @param [Integer, nil] Specify a status code to handle
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def handle(code = "default", &block)
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@origin.properties["handle.#{code}"] = block
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end
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# Insert a pass-through pipeline into request processing
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# (i.e. for error handling purposes).
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# Passed block should yield request (and return yielded data back).
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# @param block [#call] block that yields request
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def pipeline(&block)
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@origin.pipeline = block
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end
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# Set path index
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# @param index [Array,String]
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def index(index)
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@ -5,12 +5,16 @@ require_relative 'node'
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require_relative 'dsl/constructors_path'
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require_relative 'dsl/methods_path'
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require_relative 'dsl/methods_common'
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require_relative 'dsl/methods_probe'
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require_relative 'dsl/constructors_probe'
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require_relative 'util/lookup'
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module Landline
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# Execution context for filters and preprocessors.
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class ProcessorContext
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include Landline::DSL::CommonMethods
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include Landline::DSL::ProbeMethods
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include Landline::DSL::ProbeConstructors
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def initialize(path)
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@origin = path
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@ -54,22 +58,12 @@ module Landline
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# @return [Boolean] true if further navigation will be done
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# @raise [UncaughtThrowError] by default throws :response if no matches found.
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def process(request)
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return false unless run_filters(request)
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run_preprocessors(request)
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enqueue_postprocessors(request)
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@children.each do |x|
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if (value = x.go(request))
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return value
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if @pipeline
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@pipeline.call(request) { |inner_req| process_wrapped(inner_req) }
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else
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process_wrapped(request)
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end
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end
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value = index(request)
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return value if value
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_die(404)
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rescue StandardError => e
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_die(500, backtrace: [e.to_s] + e.backtrace)
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end
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# Add a preprocessor to the path.
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# Does not modify path execution.
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@ -95,7 +89,9 @@ module Landline
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@filters.append(block)
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end
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attr_reader :children, :properties
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attr_reader :children, :properties, :request
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attr_accessor :bounce, :pipeline
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private
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@ -123,6 +119,31 @@ module Landline
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request.postprocessors.append(*@postprocessors)
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end
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# Method callback on successful request navigation.
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# Finds the next appropriate path to go to.
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# (inner pipeline-wrapped handler)
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# @return [Boolean] true if further navigation will be done
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# @raise [UncaughtThrowError] by default throws :response if no matches found.
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def process_wrapped(request)
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@request = request
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return false unless run_filters(request)
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run_preprocessors(request)
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enqueue_postprocessors(request)
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@children.each do |x|
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value = x.go(request)
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return value if value
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end
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value = index(request)
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return value if value
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@bounce ? false : _die(404)
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rescue StandardError => e
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_die(500, backtrace: [e.to_s] + e.backtrace)
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ensure
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@request = nil
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end
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# Try to perform indexing on the path if possible
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# @param request [Landline::Request]
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# @return [Boolean] true if indexing succeeded
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@ -146,10 +167,11 @@ module Landline
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# @raise [UncaughtThrowError] throws :finish to stop processing
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def _die(errorcode, backtrace: nil)
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throw :finish, [errorcode].append(
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*(@properties["handle.#{errorcode}"] or
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@properties["handle.default"]).call(
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*@proccontext.instance_exec(
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errorcode,
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backtrace: backtrace
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backtrace: backtrace,
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&(@properties["handle.#{errorcode}"] or
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@properties["handle.default"])
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)
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)
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end
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@ -88,6 +88,8 @@ module Landline
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# Import a template from within current template
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def import(filepath)
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filepath = filepath.is_a? File ? filepath : File.open(filepath)
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# @sg-ignore
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newtemp = self.class.new(filepath, {}, parent: @parent)
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newtemp.binding = @binding
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newtemp
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