From 09068c8e41edb2a17fbb236f91bb45d590537206 Mon Sep 17 00:00:00 2001 From: Arti Zirk Date: Fri, 14 Oct 2016 18:29:16 +0200 Subject: [PATCH] Make arduino serial device path configurable --- fetch.js | 433 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ main.py | 19 ++- 2 files changed, 451 insertions(+), 1 deletion(-) create mode 100644 fetch.js diff --git a/fetch.js b/fetch.js new file mode 100644 index 0000000..db0ba01 --- /dev/null +++ b/fetch.js @@ -0,0 +1,433 @@ +(function(self) { + 'use strict'; + + if (self.fetch) { + return + } + + var support = { + searchParams: 'URLSearchParams' in self, + iterable: 'Symbol' in self && 'iterator' in Symbol, + blob: 'FileReader' in self && 'Blob' in self && (function() { + try { + new Blob() + return true + } catch(e) { + return false + } + })(), + formData: 'FormData' in self, + arrayBuffer: 'ArrayBuffer' in self + } + + function normalizeName(name) { + if (typeof name !== 'string') { + name = String(name) + } + if (/[^a-z0-9\-#$%&'*+.\^_`|~]/i.test(name)) { + throw new TypeError('Invalid character in header field name') + } + return name.toLowerCase() + } + + function normalizeValue(value) { + if (typeof value !== 'string') { + value = String(value) + } + return value + } + + // Build a destructive iterator for the value list + function iteratorFor(items) { + var iterator = { + next: function() { + var value = items.shift() + return {done: value === undefined, value: value} + } + } + + if (support.iterable) { + iterator[Symbol.iterator] = function() { + return iterator + } + } + + return iterator + } + + function Headers(headers) { + this.map = {} + + if (headers instanceof Headers) { + headers.forEach(function(value, name) { + this.append(name, value) + }, this) + + } else if (headers) { + Object.getOwnPropertyNames(headers).forEach(function(name) { + this.append(name, headers[name]) + }, this) + } + } + + Headers.prototype.append = function(name, value) { + name = normalizeName(name) + value = normalizeValue(value) + var list = this.map[name] + if (!list) { + list = [] + this.map[name] = list + } + list.push(value) + } + + Headers.prototype['delete'] = function(name) { + delete this.map[normalizeName(name)] + } + + Headers.prototype.get = function(name) { + var values = this.map[normalizeName(name)] + return values ? values[0] : null + } + + Headers.prototype.getAll = function(name) { + return this.map[normalizeName(name)] || [] + } + + Headers.prototype.has = function(name) { + return this.map.hasOwnProperty(normalizeName(name)) + } + + Headers.prototype.set = function(name, value) { + this.map[normalizeName(name)] = [normalizeValue(value)] + } + + Headers.prototype.forEach = function(callback, thisArg) { + Object.getOwnPropertyNames(this.map).forEach(function(name) { + this.map[name].forEach(function(value) { + callback.call(thisArg, value, name, this) + }, this) + }, this) + } + + Headers.prototype.keys = function() { + var items = [] + this.forEach(function(value, name) { items.push(name) }) + return iteratorFor(items) + } + + Headers.prototype.values = function() { + var items = [] + this.forEach(function(value) { items.push(value) }) + return iteratorFor(items) + } + + Headers.prototype.entries = function() { + var items = [] + this.forEach(function(value, name) { items.push([name, value]) }) + return iteratorFor(items) + } + + if (support.iterable) { + Headers.prototype[Symbol.iterator] = Headers.prototype.entries + } + + function consumed(body) { + if (body.bodyUsed) { + return Promise.reject(new TypeError('Already read')) + } + body.bodyUsed = true + } + + function fileReaderReady(reader) { + return new Promise(function(resolve, reject) { + reader.onload = function() { + resolve(reader.result) + } + reader.onerror = function() { + reject(reader.error) + } + }) + } + + function readBlobAsArrayBuffer(blob) { + var reader = new FileReader() + reader.readAsArrayBuffer(blob) + return fileReaderReady(reader) + } + + function readBlobAsText(blob) { + var reader = new FileReader() + reader.readAsText(blob) + return fileReaderReady(reader) + } + + function Body() { + this.bodyUsed = false + + this._initBody = function(body) { + this._bodyInit = body + if (typeof body === 'string') { + this._bodyText = body + } else if (support.blob && Blob.prototype.isPrototypeOf(body)) { + this._bodyBlob = body + } else if (support.formData && FormData.prototype.isPrototypeOf(body)) { + this._bodyFormData = body + } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) { + this._bodyText = body.toString() + } else if (!body) { + this._bodyText = '' + } else if (support.arrayBuffer && ArrayBuffer.prototype.isPrototypeOf(body)) { + // Only support ArrayBuffers for POST method. + // Receiving ArrayBuffers happens via Blobs, instead. + } else { + throw new Error('unsupported BodyInit type') + } + + if (!this.headers.get('content-type')) { + if (typeof body === 'string') { + this.headers.set('content-type', 'text/plain;charset=UTF-8') + } else if (this._bodyBlob && this._bodyBlob.type) { + this.headers.set('content-type', this._bodyBlob.type) + } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) { + this.headers.set('content-type', 'application/x-www-form-urlencoded;charset=UTF-8') + } + } + } + + if (support.blob) { + this.blob = function() { + var rejected = consumed(this) + if (rejected) { + return rejected + } + + if (this._bodyBlob) { + return Promise.resolve(this._bodyBlob) + } else if (this._bodyFormData) { + throw new Error('could not read FormData body as blob') + } else { + return Promise.resolve(new Blob([this._bodyText])) + } + } + + this.arrayBuffer = function() { + return this.blob().then(readBlobAsArrayBuffer) + } + + this.text = function() { + var rejected = consumed(this) + if (rejected) { + return rejected + } + + if (this._bodyBlob) { + return readBlobAsText(this._bodyBlob) + } else if (this._bodyFormData) { + throw new Error('could not read FormData body as text') + } else { + return Promise.resolve(this._bodyText) + } + } + } else { + this.text = function() { + var rejected = consumed(this) + return rejected ? rejected : Promise.resolve(this._bodyText) + } + } + + if (support.formData) { + this.formData = function() { + return this.text().then(decode) + } + } + + this.json = function() { + return this.text().then(JSON.parse) + } + + return this + } + + // HTTP methods whose capitalization should be normalized + var methods = ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST', 'PUT'] + + function normalizeMethod(method) { + var upcased = method.toUpperCase() + return (methods.indexOf(upcased) > -1) ? upcased : method + } + + function Request(input, options) { + options = options || {} + var body = options.body + if (Request.prototype.isPrototypeOf(input)) { + if (input.bodyUsed) { + throw new TypeError('Already read') + } + this.url = input.url + this.credentials = input.credentials + if (!options.headers) { + this.headers = new Headers(input.headers) + } + this.method = input.method + this.mode = input.mode + if (!body) { + body = input._bodyInit + input.bodyUsed = true + } + } else { + this.url = input + } + + this.credentials = options.credentials || this.credentials || 'omit' + if (options.headers || !this.headers) { + this.headers = new Headers(options.headers) + } + this.method = normalizeMethod(options.method || this.method || 'GET') + this.mode = options.mode || this.mode || null + this.referrer = null + + if ((this.method === 'GET' || this.method === 'HEAD') && body) { + throw new TypeError('Body not allowed for GET or HEAD requests') + } + this._initBody(body) + } + + Request.prototype.clone = function() { + return new Request(this) + } + + function decode(body) { + var form = new FormData() + body.trim().split('&').forEach(function(bytes) { + if (bytes) { + var split = bytes.split('=') + var name = split.shift().replace(/\+/g, ' ') + var value = split.join('=').replace(/\+/g, ' ') + form.append(decodeURIComponent(name), decodeURIComponent(value)) + } + }) + return form + } + + function headers(xhr) { + var head = new Headers() + var pairs = (xhr.getAllResponseHeaders() || '').trim().split('\n') + pairs.forEach(function(header) { + var split = header.trim().split(':') + var key = split.shift().trim() + var value = split.join(':').trim() + head.append(key, value) + }) + return head + } + + Body.call(Request.prototype) + + function Response(bodyInit, options) { + if (!options) { + options = {} + } + + this.type = 'default' + this.status = options.status + this.ok = this.status >= 200 && this.status < 300 + this.statusText = options.statusText + this.headers = options.headers instanceof Headers ? options.headers : new Headers(options.headers) + this.url = options.url || '' + this._initBody(bodyInit) + } + + Body.call(Response.prototype) + + Response.prototype.clone = function() { + return new Response(this._bodyInit, { + status: this.status, + statusText: this.statusText, + headers: new Headers(this.headers), + url: this.url + }) + } + + Response.error = function() { + var response = new Response(null, {status: 0, statusText: ''}) + response.type = 'error' + return response + } + + var redirectStatuses = [301, 302, 303, 307, 308] + + Response.redirect = function(url, status) { + if (redirectStatuses.indexOf(status) === -1) { + throw new RangeError('Invalid status code') + } + + return new Response(null, {status: status, headers: {location: url}}) + } + + self.Headers = Headers + self.Request = Request + self.Response = Response + + self.fetch = function(input, init) { + return new Promise(function(resolve, reject) { + var request + if (Request.prototype.isPrototypeOf(input) && !init) { + request = input + } else { + request = new Request(input, init) + } + + var xhr = new XMLHttpRequest() + + function responseURL() { + if ('responseURL' in xhr) { + return xhr.responseURL + } + + // Avoid security warnings on getResponseHeader when not allowed by CORS + if (/^X-Request-URL:/mi.test(xhr.getAllResponseHeaders())) { + return xhr.getResponseHeader('X-Request-URL') + } + + return + } + + xhr.onload = function() { + var options = { + status: xhr.status, + statusText: xhr.statusText, + headers: headers(xhr), + url: responseURL() + } + var body = 'response' in xhr ? xhr.response : xhr.responseText + resolve(new Response(body, options)) + } + + xhr.onerror = function() { + reject(new TypeError('Network request failed')) + } + + xhr.ontimeout = function() { + reject(new TypeError('Network request failed')) + } + + xhr.open(request.method, request.url, true) + + if (request.credentials === 'include') { + xhr.withCredentials = true + } + + if ('responseType' in xhr && support.blob) { + xhr.responseType = 'blob' + } + + request.headers.forEach(function(value, name) { + xhr.setRequestHeader(name, value) + }) + + xhr.send(typeof request._bodyInit === 'undefined' ? null : request._bodyInit) + }) + } + self.fetch.polyfill = true +})(typeof self !== 'undefined' ? self : this); diff --git a/main.py b/main.py index 8e8b83f..f1f3918 100644 --- a/main.py +++ b/main.py @@ -27,9 +27,11 @@ THE SOFTWARE. from pprint import pprint +import sys import json import random import base64 +import os.path from html import escape as html_escape from collections import deque @@ -37,6 +39,7 @@ from urllib.parse import parse_qs import serial + max_nr_messages = 25 html = """ @@ -166,6 +169,11 @@ def application(env, start_response): with open("gauge.min.js", "rb") as f: return [f.read()] + elif env["PATH_INFO"] == "/fetch.js": + start_response('200 OK', [('Content-Type', 'application/javascript')]) + with open("fetch.js", "rb") as f: + return [f.read()] + elif env["PATH_INFO"] == "/main.js": start_response('200 OK', [('Content-Type', 'application/javascript')]) with open("main.js", "rb") as f: @@ -176,8 +184,17 @@ def application(env, start_response): if __name__ == "__main__": + if len(sys.argv) < 2: + print("Usage: python3 main.py /dev/") + exit(1) + ser_dev = sys.argv[1] + + if not os.path.exists(ser_dev): + print("{} is not a valid tty device".format(ser_dev)) + exit(1) + import threading - t = threading.Thread(target=stream, args=["/dev/ttyACM0"]) + t = threading.Thread(target=stream, args=[ser_dev]) # classifying as a daemon, so they will die when the main dies t.daemon = True