mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-08-25 06:30:44 +02:00
601 lines
14 KiB
JavaScript
601 lines
14 KiB
JavaScript
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( // Module boilerplate to support browser globals and browserify and AMD.
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typeof define === "function" ? function (m) { define("msgpack-js", m); } :
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typeof exports === "object" ? function (m) { module.exports = m(); } :
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function(m){ this.msgpack = m(); }
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)(function () {
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"use strict";
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var exports = {};
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exports.inspect = inspect;
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function inspect(buffer) {
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if (buffer === undefined) return "undefined";
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var view;
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var type;
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if (buffer instanceof ArrayBuffer) {
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type = "ArrayBuffer";
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view = new DataView(buffer);
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}
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else if (buffer instanceof DataView) {
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type = "DataView";
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view = buffer;
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}
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if (!view) return JSON.stringify(buffer);
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var bytes = [];
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for (var i = 0; i < buffer.byteLength; i++) {
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if (i > 20) {
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bytes.push("...");
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break;
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}
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var byte = view.getUint8(i).toString(16);
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if (byte.length === 1) byte = "0" + byte;
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bytes.push(byte);
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}
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return "<" + type + " " + bytes.join(" ") + ">";
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}
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// Encode string as utf8 into dataview at offset
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exports.utf8Write = utf8Write;
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function utf8Write(view, offset, string) {
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var byteLength = view.byteLength;
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for(var i = 0, l = string.length; i < l; i++) {
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var codePoint = string.charCodeAt(i);
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// One byte of UTF-8
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if (codePoint < 0x80) {
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view.setUint8(offset++, codePoint >>> 0 & 0x7f | 0x00);
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continue;
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}
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// Two bytes of UTF-8
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if (codePoint < 0x800) {
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view.setUint8(offset++, codePoint >>> 6 & 0x1f | 0xc0);
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view.setUint8(offset++, codePoint >>> 0 & 0x3f | 0x80);
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continue;
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}
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// Three bytes of UTF-8.
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if (codePoint < 0x10000) {
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view.setUint8(offset++, codePoint >>> 12 & 0x0f | 0xe0);
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view.setUint8(offset++, codePoint >>> 6 & 0x3f | 0x80);
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view.setUint8(offset++, codePoint >>> 0 & 0x3f | 0x80);
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continue;
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}
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// Four bytes of UTF-8
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if (codePoint < 0x110000) {
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view.setUint8(offset++, codePoint >>> 18 & 0x07 | 0xf0);
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view.setUint8(offset++, codePoint >>> 12 & 0x3f | 0x80);
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view.setUint8(offset++, codePoint >>> 6 & 0x3f | 0x80);
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view.setUint8(offset++, codePoint >>> 0 & 0x3f | 0x80);
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continue;
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}
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throw new Error("bad codepoint " + codePoint);
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}
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}
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exports.utf8Read = utf8Read;
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function utf8Read(view, offset, length) {
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var string = "";
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for (var i = offset, end = offset + length; i < end; i++) {
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var byte = view.getUint8(i);
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// One byte character
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if ((byte & 0x80) === 0x00) {
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string += String.fromCharCode(byte);
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continue;
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}
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// Two byte character
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if ((byte & 0xe0) === 0xc0) {
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string += String.fromCharCode(
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((byte & 0x0f) << 6) |
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(view.getUint8(++i) & 0x3f)
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);
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continue;
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}
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// Three byte character
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if ((byte & 0xf0) === 0xe0) {
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string += String.fromCharCode(
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((byte & 0x0f) << 12) |
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((view.getUint8(++i) & 0x3f) << 6) |
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((view.getUint8(++i) & 0x3f) << 0)
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);
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continue;
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}
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// Four byte character
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if ((byte & 0xf8) === 0xf0) {
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string += String.fromCharCode(
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((byte & 0x07) << 18) |
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((view.getUint8(++i) & 0x3f) << 12) |
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((view.getUint8(++i) & 0x3f) << 6) |
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((view.getUint8(++i) & 0x3f) << 0)
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);
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continue;
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}
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throw new Error("Invalid byte " + byte.toString(16));
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}
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return string;
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}
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exports.utf8ByteCount = utf8ByteCount;
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function utf8ByteCount(string) {
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var count = 0;
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for(var i = 0, l = string.length; i < l; i++) {
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var codePoint = string.charCodeAt(i);
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if (codePoint < 0x80) {
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count += 1;
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continue;
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}
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if (codePoint < 0x800) {
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count += 2;
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continue;
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}
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if (codePoint < 0x10000) {
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count += 3;
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continue;
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}
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if (codePoint < 0x110000) {
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count += 4;
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continue;
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}
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throw new Error("bad codepoint " + codePoint);
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}
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return count;
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}
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exports.encode = function (value) {
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var buffer = new ArrayBuffer(sizeof(value));
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var view = new DataView(buffer);
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encode(value, view, 0);
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return buffer;
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}
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exports.decode = decode;
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// http://wiki.msgpack.org/display/MSGPACK/Format+specification
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// I've extended the protocol to have two new types that were previously reserved.
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// buffer 16 11011000 0xd8
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// buffer 32 11011001 0xd9
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// These work just like raw16 and raw32 except they are node buffers instead of strings.
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//
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// Also I've added a type for `undefined`
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// undefined 11000100 0xc4
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function Decoder(view, offset) {
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this.offset = offset || 0;
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this.view = view;
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}
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Decoder.prototype.map = function (length) {
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var value = {};
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for (var i = 0; i < length; i++) {
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var key = this.parse();
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value[key] = this.parse();
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}
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return value;
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};
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Decoder.prototype.buf = function (length) {
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var value = new ArrayBuffer(length);
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(new Uint8Array(value)).set(new Uint8Array(this.view.buffer, this.offset, length), 0);
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this.offset += length;
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return value;
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};
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Decoder.prototype.raw = function (length) {
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var value = utf8Read(this.view, this.offset, length);
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this.offset += length;
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return value;
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};
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Decoder.prototype.array = function (length) {
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var value = new Array(length);
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for (var i = 0; i < length; i++) {
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value[i] = this.parse();
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}
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return value;
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};
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Decoder.prototype.parse = function () {
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var type = this.view.getUint8(this.offset);
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var value, length;
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// FixRaw
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if ((type & 0xe0) === 0xa0) {
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length = type & 0x1f;
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this.offset++;
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return this.raw(length);
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}
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// FixMap
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if ((type & 0xf0) === 0x80) {
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length = type & 0x0f;
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this.offset++;
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return this.map(length);
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}
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// FixArray
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if ((type & 0xf0) === 0x90) {
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length = type & 0x0f;
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this.offset++;
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return this.array(length);
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}
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// Positive FixNum
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if ((type & 0x80) === 0x00) {
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this.offset++;
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return type;
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}
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// Negative Fixnum
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if ((type & 0xe0) === 0xe0) {
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value = this.view.getInt8(this.offset);
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this.offset++;
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return value;
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}
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switch (type) {
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// raw 16
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case 0xda:
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length = this.view.getUint16(this.offset + 1);
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this.offset += 3;
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return this.raw(length);
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// raw 32
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case 0xdb:
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length = this.view.getUint32(this.offset + 1);
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this.offset += 5;
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return this.raw(length);
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// nil
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case 0xc0:
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this.offset++;
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return null;
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// false
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case 0xc2:
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this.offset++;
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return false;
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// true
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case 0xc3:
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this.offset++;
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return true;
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// undefined
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case 0xc4:
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this.offset++;
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return undefined;
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// uint8
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case 0xcc:
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value = this.view.getUint8(this.offset + 1);
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this.offset += 2;
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return value;
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// uint 16
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case 0xcd:
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value = this.view.getUint16(this.offset + 1);
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this.offset += 3;
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return value;
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// uint 32
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case 0xce:
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value = this.view.getUint32(this.offset + 1);
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this.offset += 5;
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return value;
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// int 8
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case 0xd0:
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value = this.view.getInt8(this.offset + 1);
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this.offset += 2;
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return value;
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// int 16
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case 0xd1:
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value = this.view.getInt16(this.offset + 1);
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this.offset += 3;
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return value;
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// int 32
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case 0xd2:
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value = this.view.getInt32(this.offset + 1);
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this.offset += 5;
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return value;
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// map 16
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case 0xde:
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length = this.view.getUint16(this.offset + 1);
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this.offset += 3;
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return this.map(length);
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// map 32
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case 0xdf:
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length = this.view.getUint32(this.offset + 1);
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this.offset += 5;
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return this.map(length);
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// array 16
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case 0xdc:
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length = this.view.getUint16(this.offset + 1);
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this.offset += 3;
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return this.array(length);
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// array 32
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case 0xdd:
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length = this.view.getUint32(this.offset + 1);
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this.offset += 5;
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return this.array(length);
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// buffer 16
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case 0xd8:
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length = this.view.getUint16(this.offset + 1);
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this.offset += 3;
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return this.buf(length);
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// buffer 32
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case 0xd9:
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length = this.view.getUint32(this.offset + 1);
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this.offset += 5;
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return this.buf(length);
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// float
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case 0xca:
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value = this.view.getFloat32(this.offset + 1);
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this.offset += 5;
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return value;
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// double
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case 0xcb:
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value = this.view.getFloat64(this.offset + 1);
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this.offset += 9;
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return value;
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}
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throw new Error("Unknown type 0x" + type.toString(16));
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};
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function decode(buffer) {
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var view = new DataView(buffer);
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var decoder = new Decoder(view);
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var value = decoder.parse();
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if (decoder.offset !== buffer.byteLength) throw new Error((buffer.byteLength - decoder.offset) + " trailing bytes");
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return value;
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}
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function encode(value, view, offset) {
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var type = typeof value;
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// Strings Bytes
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if (type === "string") {
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var length = utf8ByteCount(value);
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// fix raw
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if (length < 0x20) {
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view.setUint8(offset, length | 0xa0);
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utf8Write(view, offset + 1, value);
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return 1 + length;
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}
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// raw 16
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if (length < 0x10000) {
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view.setUint8(offset, 0xda);
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view.setUint16(offset + 1, length);
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utf8Write(view, offset + 3, value);
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return 3 + length;
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}
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// raw 32
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if (length < 0x100000000) {
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view.setUint8(offset, 0xdb);
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view.setUint32(offset + 1, length);
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utf8Write(view, offset + 5, value);
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return 5 + length;
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}
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}
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if (value instanceof ArrayBuffer) {
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var length = value.byteLength;
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// buffer 16
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if (length < 0x10000) {
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view.setUint8(offset, 0xd8);
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view.setUint16(offset + 1, length);
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(new Uint8Array(view.buffer)).set(new Uint8Array(value), offset + 3);
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return 3 + length;
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}
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// buffer 32
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if (length < 0x100000000) {
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view.setUint8(offset, 0xd9);
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view.setUint32(offset + 1, length);
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(new Uint8Array(view.buffer)).set(new Uint8Array(value), offset + 5);
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return 5 + length;
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}
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}
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if (type === "number") {
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// Floating Point
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if ((value << 0) !== value) {
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view.setUint8(offset, 0xcb);
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view.setFloat64(offset + 1, value);
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return 9;
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}
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// Integers
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if (value >=0) {
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// positive fixnum
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if (value < 0x80) {
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view.setUint8(offset, value);
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return 1;
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}
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// uint 8
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if (value < 0x100) {
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view.setUint8(offset, 0xcc);
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view.setUint8(offset + 1, value);
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return 2;
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}
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// uint 16
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if (value < 0x10000) {
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view.setUint8(offset, 0xcd);
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view.setUint16(offset + 1, value);
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return 3;
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}
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// uint 32
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if (value < 0x100000000) {
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view.setUint8(offset, 0xce);
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view.setUint32(offset + 1, value);
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return 5;
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}
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throw new Error("Number too big 0x" + value.toString(16));
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}
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// negative fixnum
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if (value >= -0x20) {
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view.setInt8(offset, value);
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return 1;
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}
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// int 8
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if (value >= -0x80) {
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view.setUint8(offset, 0xd0);
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view.setInt8(offset + 1, value);
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return 2;
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}
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// int 16
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if (value >= -0x8000) {
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view.setUint8(offset, 0xd1);
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view.setInt16(offset + 1, value);
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return 3;
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}
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// int 32
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if (value >= -0x80000000) {
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view.setUint8(offset, 0xd2);
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view.setInt32(offset + 1, value);
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return 5;
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}
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throw new Error("Number too small -0x" + (-value).toString(16).substr(1));
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}
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// undefined
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if (type === "undefined") {
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view.setUint8(offset, 0xc4);
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return 1;
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}
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// null
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if (value === null) {
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view.setUint8(offset, 0xc0);
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return 1;
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}
|
||
|
|
||
|
// Boolean
|
||
|
if (type === "boolean") {
|
||
|
view.setUint8(offset, value ? 0xc3 : 0xc2);
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
// Container Types
|
||
|
if (type === "object") {
|
||
|
var length, size = 0;
|
||
|
var isArray = Array.isArray(value);
|
||
|
|
||
|
if (isArray) {
|
||
|
length = value.length;
|
||
|
}
|
||
|
else {
|
||
|
var keys = Object.keys(value);
|
||
|
length = keys.length;
|
||
|
}
|
||
|
|
||
|
var size;
|
||
|
if (length < 0x10) {
|
||
|
view.setUint8(offset, length | (isArray ? 0x90 : 0x80));
|
||
|
size = 1;
|
||
|
}
|
||
|
else if (length < 0x10000) {
|
||
|
view.setUint8(offset, isArray ? 0xdc : 0xde);
|
||
|
view.setUint16(offset + 1, length);
|
||
|
size = 3;
|
||
|
}
|
||
|
else if (length < 0x100000000) {
|
||
|
view.setUint8(offset, isArray ? 0xdd : 0xdf);
|
||
|
view.setUint32(offset + 1, length);
|
||
|
size = 5;
|
||
|
}
|
||
|
|
||
|
if (isArray) {
|
||
|
for (var i = 0; i < length; i++) {
|
||
|
size += encode(value[i], view, offset + size);
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
for (var i = 0; i < length; i++) {
|
||
|
var key = keys[i];
|
||
|
size += encode(key, view, offset + size);
|
||
|
size += encode(value[key], view, offset + size);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return size;
|
||
|
}
|
||
|
throw new Error("Unknown type " + type);
|
||
|
}
|
||
|
|
||
|
function sizeof(value) {
|
||
|
var type = typeof value;
|
||
|
|
||
|
// Raw Bytes
|
||
|
if (type === "string") {
|
||
|
var length = utf8ByteCount(value);
|
||
|
if (length < 0x20) {
|
||
|
return 1 + length;
|
||
|
}
|
||
|
if (length < 0x10000) {
|
||
|
return 3 + length;
|
||
|
}
|
||
|
if (length < 0x100000000) {
|
||
|
return 5 + length;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (value instanceof ArrayBuffer) {
|
||
|
var length = value.byteLength;
|
||
|
if (length < 0x10000) {
|
||
|
return 3 + length;
|
||
|
}
|
||
|
if (length < 0x100000000) {
|
||
|
return 5 + length;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (type === "number") {
|
||
|
// Floating Point
|
||
|
// double
|
||
|
if (value << 0 !== value) return 9;
|
||
|
|
||
|
// Integers
|
||
|
if (value >=0) {
|
||
|
// positive fixnum
|
||
|
if (value < 0x80) return 1;
|
||
|
// uint 8
|
||
|
if (value < 0x100) return 2;
|
||
|
// uint 16
|
||
|
if (value < 0x10000) return 3;
|
||
|
// uint 32
|
||
|
if (value < 0x100000000) return 5;
|
||
|
// uint 64
|
||
|
if (value < 0x10000000000000000) return 9;
|
||
|
throw new Error("Number too big 0x" + value.toString(16));
|
||
|
}
|
||
|
// negative fixnum
|
||
|
if (value >= -0x20) return 1;
|
||
|
// int 8
|
||
|
if (value >= -0x80) return 2;
|
||
|
// int 16
|
||
|
if (value >= -0x8000) return 3;
|
||
|
// int 32
|
||
|
if (value >= -0x80000000) return 5;
|
||
|
// int 64
|
||
|
if (value >= -0x8000000000000000) return 9;
|
||
|
throw new Error("Number too small -0x" + value.toString(16).substr(1));
|
||
|
}
|
||
|
|
||
|
// Boolean, null, undefined
|
||
|
if (type === "boolean" || type === "undefined" || value === null) return 1;
|
||
|
|
||
|
// Container Types
|
||
|
if (type === "object") {
|
||
|
var length, size = 0;
|
||
|
if (Array.isArray(value)) {
|
||
|
length = value.length;
|
||
|
for (var i = 0; i < length; i++) {
|
||
|
size += sizeof(value[i]);
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
var keys = Object.keys(value);
|
||
|
length = keys.length;
|
||
|
for (var i = 0; i < length; i++) {
|
||
|
var key = keys[i];
|
||
|
size += sizeof(key) + sizeof(value[key]);
|
||
|
}
|
||
|
}
|
||
|
if (length < 0x10) {
|
||
|
return 1 + size;
|
||
|
}
|
||
|
if (length < 0x10000) {
|
||
|
return 3 + size;
|
||
|
}
|
||
|
if (length < 0x100000000) {
|
||
|
return 5 + size;
|
||
|
}
|
||
|
throw new Error("Array or object too long 0x" + length.toString(16));
|
||
|
}
|
||
|
throw new Error("Unknown type " + type);
|
||
|
}
|
||
|
|
||
|
return exports;
|
||
|
|
||
|
});
|