96 lines
3.2 KiB
JavaScript
96 lines
3.2 KiB
JavaScript
(function() {
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var PROTOCOL_6, PROTOCOL_7, Parser, ProtocolError,
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indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
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exports.PROTOCOL_6 = PROTOCOL_6 = 'http://livereload.com/protocols/official-6';
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exports.PROTOCOL_7 = PROTOCOL_7 = 'http://livereload.com/protocols/official-7';
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exports.ProtocolError = ProtocolError = (function() {
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function ProtocolError(reason, data) {
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this.message = "LiveReload protocol error (" + reason + ") after receiving data: \"" + data + "\".";
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}
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return ProtocolError;
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})();
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exports.Parser = Parser = (function() {
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function Parser(handlers) {
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this.handlers = handlers;
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this.reset();
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}
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Parser.prototype.reset = function() {
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return this.protocol = null;
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};
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Parser.prototype.process = function(data) {
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var command, e, error, message, options, ref;
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try {
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if (this.protocol == null) {
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if (data.match(/^!!ver:([\d.]+)$/)) {
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this.protocol = 6;
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} else if (message = this._parseMessage(data, ['hello'])) {
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if (!message.protocols.length) {
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throw new ProtocolError("no protocols specified in handshake message");
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} else if (indexOf.call(message.protocols, PROTOCOL_7) >= 0) {
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this.protocol = 7;
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} else if (indexOf.call(message.protocols, PROTOCOL_6) >= 0) {
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this.protocol = 6;
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} else {
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throw new ProtocolError("no supported protocols found");
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}
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}
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return this.handlers.connected(this.protocol);
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} else if (this.protocol === 6) {
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message = JSON.parse(data);
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if (!message.length) {
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throw new ProtocolError("protocol 6 messages must be arrays");
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}
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command = message[0], options = message[1];
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if (command !== 'refresh') {
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throw new ProtocolError("unknown protocol 6 command");
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}
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return this.handlers.message({
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command: 'reload',
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path: options.path,
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liveCSS: (ref = options.apply_css_live) != null ? ref : true
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});
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} else {
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message = this._parseMessage(data, ['reload', 'alert']);
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return this.handlers.message(message);
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}
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} catch (error) {
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e = error;
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if (e instanceof ProtocolError) {
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return this.handlers.error(e);
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} else {
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throw e;
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}
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}
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};
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Parser.prototype._parseMessage = function(data, validCommands) {
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var e, error, message, ref;
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try {
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message = JSON.parse(data);
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} catch (error) {
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e = error;
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throw new ProtocolError('unparsable JSON', data);
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}
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if (!message.command) {
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throw new ProtocolError('missing "command" key', data);
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}
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if (ref = message.command, indexOf.call(validCommands, ref) < 0) {
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throw new ProtocolError("invalid command '" + message.command + "', only valid commands are: " + (validCommands.join(', ')) + ")", data);
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}
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return message;
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};
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return Parser;
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})();
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}).call(this);
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