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-rw-r--r--signaling-server/node_modules/socket.io/node_modules/redis/lib/parser/javascript.js317
1 files changed, 317 insertions, 0 deletions
diff --git a/signaling-server/node_modules/socket.io/node_modules/redis/lib/parser/javascript.js b/signaling-server/node_modules/socket.io/node_modules/redis/lib/parser/javascript.js
new file mode 100644
index 0000000..b8f5bc6
--- /dev/null
+++ b/signaling-server/node_modules/socket.io/node_modules/redis/lib/parser/javascript.js
@@ -0,0 +1,317 @@
+/*global Buffer require exports console setTimeout */
+
+// TODO - incorporate these V8 pro tips:
+// pre-allocate Arrays if length is known in advance
+// do not use delete
+// use numbers for parser state
+
+var events = require("events"),
+ util = require("../util");
+
+exports.debug_mode = false;
+exports.name = "javascript";
+
+function RedisReplyParser(options) {
+ this.name = exports.name;
+ this.options = options || {};
+ this.reset();
+ events.EventEmitter.call(this);
+}
+
+util.inherits(RedisReplyParser, events.EventEmitter);
+
+exports.Parser = RedisReplyParser;
+
+// Buffer.toString() is quite slow for small strings
+function small_toString(buf, len) {
+ var tmp = "", i;
+
+ for (i = 0; i < len; i += 1) {
+ tmp += String.fromCharCode(buf[i]);
+ }
+
+ return tmp;
+}
+
+// Reset parser to it's original state.
+RedisReplyParser.prototype.reset = function () {
+ this.return_buffer = new Buffer(16384); // for holding replies, might grow
+ this.return_string = "";
+ this.tmp_string = ""; // for holding size fields
+
+ this.multi_bulk_length = 0;
+ this.multi_bulk_replies = null;
+ this.multi_bulk_pos = 0;
+ this.multi_bulk_nested_length = 0;
+ this.multi_bulk_nested_replies = null;
+
+ this.states = {
+ TYPE: 1,
+ SINGLE_LINE: 2,
+ MULTI_BULK_COUNT: 3,
+ INTEGER_LINE: 4,
+ BULK_LENGTH: 5,
+ ERROR_LINE: 6,
+ BULK_DATA: 7,
+ UNKNOWN_TYPE: 8,
+ FINAL_CR: 9,
+ FINAL_LF: 10,
+ MULTI_BULK_COUNT_LF: 11,
+ BULK_LF: 12
+ };
+
+ this.state = this.states.TYPE;
+};
+
+RedisReplyParser.prototype.parser_error = function (message) {
+ this.emit("error", message);
+ this.reset();
+};
+
+RedisReplyParser.prototype.execute = function (incoming_buf) {
+ var pos = 0, bd_tmp, bd_str, i, il, states = this.states;
+ //, state_times = {}, start_execute = new Date(), start_switch, end_switch, old_state;
+ //start_switch = new Date();
+
+ while (pos < incoming_buf.length) {
+ // old_state = this.state;
+ // console.log("execute: " + this.state + ", " + pos + "/" + incoming_buf.length + ", " + String.fromCharCode(incoming_buf[pos]));
+
+ switch (this.state) {
+ case 1: // states.TYPE
+ this.type = incoming_buf[pos];
+ pos += 1;
+
+ switch (this.type) {
+ case 43: // +
+ this.state = states.SINGLE_LINE;
+ this.return_buffer.end = 0;
+ this.return_string = "";
+ break;
+ case 42: // *
+ this.state = states.MULTI_BULK_COUNT;
+ this.tmp_string = "";
+ break;
+ case 58: // :
+ this.state = states.INTEGER_LINE;
+ this.return_buffer.end = 0;
+ this.return_string = "";
+ break;
+ case 36: // $
+ this.state = states.BULK_LENGTH;
+ this.tmp_string = "";
+ break;
+ case 45: // -
+ this.state = states.ERROR_LINE;
+ this.return_buffer.end = 0;
+ this.return_string = "";
+ break;
+ default:
+ this.state = states.UNKNOWN_TYPE;
+ }
+ break;
+ case 4: // states.INTEGER_LINE
+ if (incoming_buf[pos] === 13) {
+ this.send_reply(+small_toString(this.return_buffer, this.return_buffer.end));
+ this.state = states.FINAL_LF;
+ } else {
+ this.return_buffer[this.return_buffer.end] = incoming_buf[pos];
+ this.return_buffer.end += 1;
+ }
+ pos += 1;
+ break;
+ case 6: // states.ERROR_LINE
+ if (incoming_buf[pos] === 13) {
+ this.send_error(this.return_buffer.toString("ascii", 0, this.return_buffer.end));
+ this.state = states.FINAL_LF;
+ } else {
+ this.return_buffer[this.return_buffer.end] = incoming_buf[pos];
+ this.return_buffer.end += 1;
+ }
+ pos += 1;
+ break;
+ case 2: // states.SINGLE_LINE
+ if (incoming_buf[pos] === 13) {
+ this.send_reply(this.return_string);
+ this.state = states.FINAL_LF;
+ } else {
+ this.return_string += String.fromCharCode(incoming_buf[pos]);
+ }
+ pos += 1;
+ break;
+ case 3: // states.MULTI_BULK_COUNT
+ if (incoming_buf[pos] === 13) { // \r
+ this.state = states.MULTI_BULK_COUNT_LF;
+ } else {
+ this.tmp_string += String.fromCharCode(incoming_buf[pos]);
+ }
+ pos += 1;
+ break;
+ case 11: // states.MULTI_BULK_COUNT_LF
+ if (incoming_buf[pos] === 10) { // \n
+ if (this.multi_bulk_length) { // nested multi-bulk
+ this.multi_bulk_nested_length = this.multi_bulk_length;
+ this.multi_bulk_nested_replies = this.multi_bulk_replies;
+ this.multi_bulk_nested_pos = this.multi_bulk_pos;
+ }
+ this.multi_bulk_length = +this.tmp_string;
+ this.multi_bulk_pos = 0;
+ this.state = states.TYPE;
+ if (this.multi_bulk_length < 0) {
+ this.send_reply(null);
+ this.multi_bulk_length = 0;
+ } else if (this.multi_bulk_length === 0) {
+ this.multi_bulk_pos = 0;
+ this.multi_bulk_replies = null;
+ this.send_reply([]);
+ } else {
+ this.multi_bulk_replies = new Array(this.multi_bulk_length);
+ }
+ } else {
+ this.parser_error(new Error("didn't see LF after NL reading multi bulk count"));
+ return;
+ }
+ pos += 1;
+ break;
+ case 5: // states.BULK_LENGTH
+ if (incoming_buf[pos] === 13) { // \r
+ this.state = states.BULK_LF;
+ } else {
+ this.tmp_string += String.fromCharCode(incoming_buf[pos]);
+ }
+ pos += 1;
+ break;
+ case 12: // states.BULK_LF
+ if (incoming_buf[pos] === 10) { // \n
+ this.bulk_length = +this.tmp_string;
+ if (this.bulk_length === -1) {
+ this.send_reply(null);
+ this.state = states.TYPE;
+ } else if (this.bulk_length === 0) {
+ this.send_reply(new Buffer(""));
+ this.state = states.FINAL_CR;
+ } else {
+ this.state = states.BULK_DATA;
+ if (this.bulk_length > this.return_buffer.length) {
+ if (exports.debug_mode) {
+ console.log("Growing return_buffer from " + this.return_buffer.length + " to " + this.bulk_length);
+ }
+ this.return_buffer = new Buffer(this.bulk_length);
+ }
+ this.return_buffer.end = 0;
+ }
+ } else {
+ this.parser_error(new Error("didn't see LF after NL while reading bulk length"));
+ return;
+ }
+ pos += 1;
+ break;
+ case 7: // states.BULK_DATA
+ this.return_buffer[this.return_buffer.end] = incoming_buf[pos];
+ this.return_buffer.end += 1;
+ pos += 1;
+ if (this.return_buffer.end === this.bulk_length) {
+ bd_tmp = new Buffer(this.bulk_length);
+ // When the response is small, Buffer.copy() is a lot slower.
+ if (this.bulk_length > 10) {
+ this.return_buffer.copy(bd_tmp, 0, 0, this.bulk_length);
+ } else {
+ for (i = 0, il = this.bulk_length; i < il; i += 1) {
+ bd_tmp[i] = this.return_buffer[i];
+ }
+ }
+ this.send_reply(bd_tmp);
+ this.state = states.FINAL_CR;
+ }
+ break;
+ case 9: // states.FINAL_CR
+ if (incoming_buf[pos] === 13) { // \r
+ this.state = states.FINAL_LF;
+ pos += 1;
+ } else {
+ this.parser_error(new Error("saw " + incoming_buf[pos] + " when expecting final CR"));
+ return;
+ }
+ break;
+ case 10: // states.FINAL_LF
+ if (incoming_buf[pos] === 10) { // \n
+ this.state = states.TYPE;
+ pos += 1;
+ } else {
+ this.parser_error(new Error("saw " + incoming_buf[pos] + " when expecting final LF"));
+ return;
+ }
+ break;
+ default:
+ this.parser_error(new Error("invalid state " + this.state));
+ }
+ // end_switch = new Date();
+ // if (state_times[old_state] === undefined) {
+ // state_times[old_state] = 0;
+ // }
+ // state_times[old_state] += (end_switch - start_switch);
+ // start_switch = end_switch;
+ }
+ // console.log("execute ran for " + (Date.now() - start_execute) + " ms, on " + incoming_buf.length + " Bytes. ");
+ // Object.keys(state_times).forEach(function (state) {
+ // console.log(" " + state + ": " + state_times[state]);
+ // });
+};
+
+RedisReplyParser.prototype.send_error = function (reply) {
+ if (this.multi_bulk_length > 0 || this.multi_bulk_nested_length > 0) {
+ // TODO - can this happen? Seems like maybe not.
+ this.add_multi_bulk_reply(reply);
+ } else {
+ this.emit("reply error", reply);
+ }
+};
+
+RedisReplyParser.prototype.send_reply = function (reply) {
+ if (this.multi_bulk_length > 0 || this.multi_bulk_nested_length > 0) {
+ if (!this.options.return_buffers && Buffer.isBuffer(reply)) {
+ this.add_multi_bulk_reply(reply.toString("utf8"));
+ } else {
+ this.add_multi_bulk_reply(reply);
+ }
+ } else {
+ if (!this.options.return_buffers && Buffer.isBuffer(reply)) {
+ this.emit("reply", reply.toString("utf8"));
+ } else {
+ this.emit("reply", reply);
+ }
+ }
+};
+
+RedisReplyParser.prototype.add_multi_bulk_reply = function (reply) {
+ if (this.multi_bulk_replies) {
+ this.multi_bulk_replies[this.multi_bulk_pos] = reply;
+ this.multi_bulk_pos += 1;
+ if (this.multi_bulk_pos < this.multi_bulk_length) {
+ return;
+ }
+ } else {
+ this.multi_bulk_replies = reply;
+ }
+
+ if (this.multi_bulk_nested_length > 0) {
+ this.multi_bulk_nested_replies[this.multi_bulk_nested_pos] = this.multi_bulk_replies;
+ this.multi_bulk_nested_pos += 1;
+
+ this.multi_bulk_length = 0;
+ this.multi_bulk_replies = null;
+ this.multi_bulk_pos = 0;
+
+ if (this.multi_bulk_nested_length === this.multi_bulk_nested_pos) {
+ this.emit("reply", this.multi_bulk_nested_replies);
+ this.multi_bulk_nested_length = 0;
+ this.multi_bulk_nested_pos = 0;
+ this.multi_bulk_nested_replies = null;
+ }
+ } else {
+ this.emit("reply", this.multi_bulk_replies);
+ this.multi_bulk_length = 0;
+ this.multi_bulk_replies = null;
+ this.multi_bulk_pos = 0;
+ }
+};
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