miniobrowser: Bring Minio browser source into minio repo. (#3617)

browser/app/js/mime.js

@@ -0,0 +1,106 @@
+/*
+ * Minio Browser (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import mimedb from 'mime-types'
+
+const isFolder = (name, contentType) => {
+  if (name.endsWith('/')) return true
+  return false
+}
+
+const isPdf = (name, contentType) => {
+  if (contentType === 'application/pdf') return true
+  return false
+}
+
+const isZip = (name, contentType) => {
+  if (!contentType || !contentType.includes('/')) return false
+  if (contentType.split('/')[1].includes('zip')) return true
+  return false
+}
+
+const isCode = (name, contentType) => {
+  const codeExt = ['c', 'cpp', 'go', 'py', 'java', 'rb', 'js', 'pl', 'fs',
+    'php', 'css', 'less', 'scss', 'coffee', 'net', 'html',
+    'rs', 'exs', 'scala', 'hs', 'clj', 'el', 'scm', 'lisp',
+    'asp', 'aspx']
+  const ext = name.split('.').reverse()[0]
+  for (var i in codeExt) {
+    if (ext === codeExt[i]) return true
+  }
+  return false
+}
+
+const isExcel = (name, contentType) => {
+  if (!contentType || !contentType.includes('/')) return false
+  const types = ['excel', 'spreadsheet']
+  const subType = contentType.split('/')[1]
+  for (var i in types) {
+    if (subType.includes(types[i])) return true
+  }
+  return false
+}
+
+const isDoc = (name, contentType) => {
+  if (!contentType || !contentType.includes('/')) return false
+  const types = ['word', '.document']
+  const subType = contentType.split('/')[1]
+  for (var i in types) {
+    if (subType.includes(types[i])) return true
+  }
+  return false
+}
+
+const isPresentation = (name, contentType) => {
+  if (!contentType || !contentType.includes('/')) return false
+  var types = ['powerpoint', 'presentation']
+  const subType = contentType.split('/')[1]
+  for (var i in types) {
+    if (subType.includes(types[i])) return true
+  }
+  return false
+}
+
+const typeToIcon = (type) => {
+  return (name, contentType) => {
+    if (!contentType || !contentType.includes('/')) return false
+    if (contentType.split('/')[0] === type) return true
+    return false
+  }
+}
+
+export const getDataType = (name, contentType) => {
+  if (contentType === "") {
+    contentType = mimedb.lookup(name) || 'application/octet-stream'
+  }
+  const check = [
+    ['folder', isFolder],
+    ['code', isCode],
+    ['audio', typeToIcon('audio')],
+    ['image', typeToIcon('image')],
+    ['video', typeToIcon('video')],
+    ['text', typeToIcon('text')],
+    ['pdf', isPdf],
+    ['zip', isZip],
+    ['excel', isExcel],
+    ['doc', isDoc],
+    ['presentation', isPresentation]
+  ]
+  for (var i in check) {
+    if (check[i][1](name, contentType)) return check[i][0]
+  }
+  return 'other'
+}