Backend half

SerpentRace_Backend/node_modules/express/lib/utils.js

@@ -12,20 +12,17 @@
  * @api private
  */
 
-var { METHODS } = require('node:http');
+var Buffer = require('safe-buffer').Buffer
+var contentDisposition = require('content-disposition');
 var contentType = require('content-type');
+var deprecate = require('depd')('express');
+var flatten = require('array-flatten');
+var mime = require('send').mime;
 var etag = require('etag');
-var mime = require('mime-types')
 var proxyaddr = require('proxy-addr');
 var qs = require('qs');
 var querystring = require('querystring');
 
-/**
- * A list of lowercased HTTP methods that are supported by Node.js.
- * @api private
- */
-exports.methods = METHODS.map((method) => method.toLowerCase());
-
 /**
  * Return strong ETag for `body`.
  *
@@ -48,6 +45,31 @@ exports.etag = createETagGenerator({ weak: false })
 
 exports.wetag = createETagGenerator({ weak: true })
 
+/**
+ * Check if `path` looks absolute.
+ *
+ * @param {String} path
+ * @return {Boolean}
+ * @api private
+ */
+
+exports.isAbsolute = function(path){
+  if ('/' === path[0]) return true;
+  if (':' === path[1] && ('\\' === path[2] || '/' === path[2])) return true; // Windows device path
+  if ('\\\\' === path.substring(0, 2)) return true; // Microsoft Azure absolute path
+};
+
+/**
+ * Flatten the given `arr`.
+ *
+ * @param {Array} arr
+ * @return {Array}
+ * @api private
+ */
+
+exports.flatten = deprecate.function(flatten,
+  'utils.flatten: use array-flatten npm module instead');
+
 /**
  * Normalize the given `type`, for example "html" becomes "text/html".
  *
@@ -59,7 +81,7 @@ exports.wetag = createETagGenerator({ weak: true })
 exports.normalizeType = function(type){
   return ~type.indexOf('/')
     ? acceptParams(type)
-    : { value: (mime.lookup(type) || 'application/octet-stream'), params: {} }
+    : { value: mime.lookup(type), params: {} };
 };
 
 /**
@@ -70,10 +92,27 @@ exports.normalizeType = function(type){
  * @api private
  */
 
-exports.normalizeTypes = function(types) {
-  return types.map(exports.normalizeType);
+exports.normalizeTypes = function(types){
+  var ret = [];
+
+  for (var i = 0; i < types.length; ++i) {
+    ret.push(exports.normalizeType(types[i]));
+  }
+
+  return ret;
 };
 
+/**
+ * Generate Content-Disposition header appropriate for the filename.
+ * non-ascii filenames are urlencoded and a filename* parameter is added
+ *
+ * @param {String} filename
+ * @return {String}
+ * @api private
+ */
+
+exports.contentDisposition = deprecate.function(contentDisposition,
+  'utils.contentDisposition: use content-disposition npm module instead');
 
 /**
  * Parse accept params `str` returning an
@@ -85,33 +124,16 @@ exports.normalizeTypes = function(types) {
  */
 
 function acceptParams (str) {
-  var length = str.length;
-  var colonIndex = str.indexOf(';');
-  var index = colonIndex === -1 ? length : colonIndex;
-  var ret = { value: str.slice(0, index).trim(), quality: 1, params: {} };
+  var parts = str.split(/ *; */);
+  var ret = { value: parts[0], quality: 1, params: {} }
 
-  while (index < length) {
-    var splitIndex = str.indexOf('=', index);
-    if (splitIndex === -1) break;
-
-    var colonIndex = str.indexOf(';', index);
-    var endIndex = colonIndex === -1 ? length : colonIndex;
-
-    if (splitIndex > endIndex) {
-      index = str.lastIndexOf(';', splitIndex - 1) + 1;
-      continue;
-    }
-
-    var key = str.slice(index, splitIndex).trim();
-    var value = str.slice(splitIndex + 1, endIndex).trim();
-
-    if (key === 'q') {
-      ret.quality = parseFloat(value);
+  for (var i = 1; i < parts.length; ++i) {
+    var pms = parts[i].split(/ *= */);
+    if ('q' === pms[0]) {
+      ret.quality = parseFloat(pms[1]);
     } else {
-      ret.params[key] = value;
+      ret.params[pms[0]] = pms[1];
     }
-
-    index = endIndex + 1;
   }
 
   return ret;
@@ -170,6 +192,7 @@ exports.compileQueryParser = function compileQueryParser(val) {
       fn = querystring.parse;
       break;
     case false:
+      fn = newObject;
       break;
     case 'extended':
       fn = parseExtendedQueryString;
@@ -267,3 +290,14 @@ function parseExtendedQueryString(str) {
     allowPrototypes: true
   });
 }
+
+/**
+ * Return new empty object.
+ *
+ * @return {Object}
+ * @api private
+ */
+
+function newObject() {
+  return {};
+}