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qwen/nodejs/node_modules/multer/index.js

@@ -0,0 +1,104 @@
+var makeMiddleware = require('./lib/make-middleware')
+
+var diskStorage = require('./storage/disk')
+var memoryStorage = require('./storage/memory')
+var MulterError = require('./lib/multer-error')
+
+function allowAll (req, file, cb) {
+  cb(null, true)
+}
+
+function Multer (options) {
+  if (options.storage) {
+    this.storage = options.storage
+  } else if (options.dest) {
+    this.storage = diskStorage({ destination: options.dest })
+  } else {
+    this.storage = memoryStorage()
+  }
+
+  this.limits = options.limits
+  this.preservePath = options.preservePath
+  this.fileFilter = options.fileFilter || allowAll
+}
+
+Multer.prototype._makeMiddleware = function (fields, fileStrategy) {
+  function setup () {
+    var fileFilter = this.fileFilter
+    var filesLeft = Object.create(null)
+
+    fields.forEach(function (field) {
+      if (typeof field.maxCount === 'number') {
+        filesLeft[field.name] = field.maxCount
+      } else {
+        filesLeft[field.name] = Infinity
+      }
+    })
+
+    function wrappedFileFilter (req, file, cb) {
+      if ((filesLeft[file.fieldname] || 0) <= 0) {
+        return cb(new MulterError('LIMIT_UNEXPECTED_FILE', file.fieldname))
+      }
+
+      filesLeft[file.fieldname] -= 1
+      fileFilter(req, file, cb)
+    }
+
+    return {
+      limits: this.limits,
+      preservePath: this.preservePath,
+      storage: this.storage,
+      fileFilter: wrappedFileFilter,
+      fileStrategy: fileStrategy
+    }
+  }
+
+  return makeMiddleware(setup.bind(this))
+}
+
+Multer.prototype.single = function (name) {
+  return this._makeMiddleware([{ name: name, maxCount: 1 }], 'VALUE')
+}
+
+Multer.prototype.array = function (name, maxCount) {
+  return this._makeMiddleware([{ name: name, maxCount: maxCount }], 'ARRAY')
+}
+
+Multer.prototype.fields = function (fields) {
+  return this._makeMiddleware(fields, 'OBJECT')
+}
+
+Multer.prototype.none = function () {
+  return this._makeMiddleware([], 'NONE')
+}
+
+Multer.prototype.any = function () {
+  function setup () {
+    return {
+      limits: this.limits,
+      preservePath: this.preservePath,
+      storage: this.storage,
+      fileFilter: this.fileFilter,
+      fileStrategy: 'ARRAY'
+    }
+  }
+
+  return makeMiddleware(setup.bind(this))
+}
+
+function multer (options) {
+  if (options === undefined) {
+    return new Multer({})
+  }
+
+  if (typeof options === 'object' && options !== null) {
+    return new Multer(options)
+  }
+
+  throw new TypeError('Expected object for argument options')
+}
+
+module.exports = multer
+module.exports.diskStorage = diskStorage
+module.exports.memoryStorage = memoryStorage
+module.exports.MulterError = MulterError