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Diffstat (limited to 'node_modules/structured-clone/serialize.js')
| -rw-r--r-- | node_modules/structured-clone/serialize.js | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/node_modules/structured-clone/serialize.js b/node_modules/structured-clone/serialize.js deleted file mode 100644 index 44c984f38..000000000 --- a/node_modules/structured-clone/serialize.js +++ /dev/null @@ -1,223 +0,0 @@ -// Implements serialize/deserialize of structured clones. -// Also resolves cycles (code based on cycle.js by Douglas Crockford) - -function encodeRegExp (regexp) -{ - var flags = ''; - if (regexp.global) flags += 'g'; - if (regexp.multiline) flags += 'm'; - if (regexp.ignoreCase) flags += 'i'; - return [flags, regexp.source].join(','); -} - -function decodeRegExp (str) -{ - var flags = str.match(/^[^,]*/)[0]; - var source = str.substr(flags.length + 1); - return new RegExp(source, flags); -} - - -// The derez recurses through the object, producing the deep copy. - -function derez(value, path, objects, paths, buffers) -{ - if (Buffer.isBuffer(value)) { - var start = Buffer.concat(buffers).length; - buffers.push(value); - return '\x10b' + [start, value.length].join(',') - } - if (value instanceof Date) { - return '\x10d' + value.toJSON(); - } - if (value instanceof RegExp) { - return '\x10r' + encodeRegExp(value); - } - if (value instanceof Error) { - return '\x10e' + value.message - } - if (typeof value == 'string') { - return value.charAt(0) == '\x10' ? '\x10s' + value : value; - } - - var i, // The loop counter - name, // Property name - nu; // The new object or array - -// typeof null === 'object', so go on if this value is really an object but not -// one of the weird builtin objects. - - if (typeof value === 'object' && value !== null && - !(value instanceof Boolean) && - !(value instanceof Number) && - !(value instanceof String)) { - -// If the value is an object or array, look to see if we have already -// encountered it. If so, return a $ref/path object. This is a hard way, -// linear search that will get slower as the number of unique objects grows. - - i = objects.indexOf(value); - if (i !== -1) { - return '\x10j' + paths[i]; - } - -// Otherwise, accumulate the unique value and its path. - - objects.push(value); - paths.push(path); - -// If it is an array, replicate the array. - - if (Array.isArray(value)) { - nu = []; - for (i = 0; i < value.length; i += 1) { - nu[i] = derez(value[i], - path + '[' + i + ']', - objects, paths, buffers); - } - } else { - -// If it is an object, replicate the object. - - nu = {}; - for (name in value) { - if (Object.prototype.hasOwnProperty.call(value, name) && value != '__proto__') { - nu[name] = derez(value[name], - path + '[' + JSON.stringify(name) + ']', - objects, paths, buffers); - } - } - } - return nu; - } - - return value; -} - - -function rerez($, $$) -{ - -// Restore an object that was reduced by decycle. Members whose values are -// objects of the form -// {$ref: PATH} -// are replaced with references to the value found by the PATH. This will -// restore cycles. The object will be mutated. - -// The eval function is used to locate the values described by a PATH. The -// root object is kept in a $ variable. A regular expression is used to -// assure that the PATH is extremely well formed. The regexp contains nested -// * quantifiers. That has been known to have extremely bad performance -// problems on some browsers for very long strings. A PATH is expected to be -// reasonably short. A PATH is allowed to belong to a very restricted subset of -// Goessner's JSONPath. - -// So, -// var s = '[{"$ref":"$"}]'; -// return JSON.retrocycle(JSON.parse(s)); -// produces an array containing a single element which is the array itself. - - var px = - /^\${1,4}(?:\[(?:\d+|\"(?:[^\\\"\u0000-\u001f]|\\([\\\"\/bfnrt]|u[0-9a-zA-Z]{4}))*\")\])*$/; - - function redo (item) { - if (typeof item == 'string' && item.charAt(0) == '\x10') { - switch (item.charAt(1)) { - case 's': - return item.substr(2); - case 'b': - var bounds = item.substr(2).split(',', 2); - return $$.slice(bounds[0] || 0, (bounds[0] || 0) + (bounds[1] || [0])); - case 'd': - return new Date(item.substr(2)); - case 'r': - return decodeRegExp(item.substr(2)); - case 'e': - return new Error(item.substr(2)); - case 'j': - var path = item.substr(2); - if (px.test(path)) { - return eval(path); - } - default: return null; - } - } - - if (item && typeof item === 'object') { - rez(item, $$); - } - return item; - } - - function rez(value) { - -// The rez function walks recursively through the object looking for $ref -// properties. When it finds one that has a value that is a path, then it -// replaces the $ref object with a reference to the value that is found by -// the path. - - var i, name; - - if (value && typeof value === 'object') { - if (Array.isArray(value)) { - for (i = 0; i < value.length; i += 1) { - value[i] = redo(value[i]); - } - } else { - for (name in value) { - value[name] = redo(value[name]); - } - } - } - } - - $ = redo($) - - return $; -}; - - -// Public API - -exports.serialize = function (object) { - var objects = [], // Keep a reference to each unique object or array - paths = [], // Keep the path to each unique object or array - buffers = []; // Returned buffers - - var nilbyte = new Buffer([0x00]); - - if (Buffer.isBuffer(object)) { - return Buffer.concat([ - nilbyte, - object - ]); - } - - var json = new Buffer(JSON.stringify(derez(object, '$', objects, paths, buffers))); - if (buffers.length == 0) { - return json; - } - - return Buffer.concat([ - json, - nilbyte, - Buffer.concat(buffers) - ]); -} - -exports.deserialize = function (buf) { - for (var i = 0; i <= buf.length; i++) { - if (buf[i] == 0x00 || buf[i] == null) { - break; - } - } - var jsonbuf = buf.slice(0, i); - var bufbuf = buf.slice(i + 1); - - // Shortcut for only encoding a root buffer. - if (jsonbuf.length == 0) { - return bufbuf; - } - - return rerez(JSON.parse(jsonbuf.toString('utf-8')), bufbuf); -}
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