Decode the fetched body correctly if content-type was provided

browser/components/CodeEditor.js

@@ -8,6 +8,7 @@ import copyImage from 'browser/main/lib/dataApi/copyImage'
 import { findStorage } from 'browser/lib/findStorage'
 import fs from 'fs'
 import eventEmitter from 'browser/main/lib/eventEmitter'
+import iconv from 'iconv-lite'
 
 CodeMirror.modeURL = '../node_modules/codemirror/mode/%N/%N.js'
 
@@ -317,7 +318,7 @@ export default class CodeEditor extends React.Component {
     fetch(pastedTxt, {
       method: 'get'
     }).then((response) => {
-      return (response.text())
+      return this.decodeResponse(response)
     }).then((response) => {
       const parsedResponse = (new window.DOMParser()).parseFromString(response, 'text/html')
       const value = editor.getValue()
@@ -335,6 +336,31 @@ export default class CodeEditor extends React.Component {
     })
   }
 
+  decodeResponse (response) {
+    const headers = response.headers
+    const _charset = headers.has('content-type')
+      ? this.extractContentTypeCharset(headers.get('content-type'))
+      : undefined
+    return response.arrayBuffer().then((buff) => {
+      return new Promise((resolve, reject) => {
+        try {
+          const charset = _charset !== undefined && iconv.encodingExists(_charset) ? _charset : 'utf-8'
+          resolve(iconv.decode(new Buffer(buff), charset).toString())
+        } catch (e) {
+          reject(e)
+        }
+      })
+    })
+  }
+
+  extractContentTypeCharset (contentType) {
+    return contentType.split(';').filter((str) => {
+      return str.trim().toLowerCase().startsWith('charset')
+    }).map((str) => {
+      return str.replace(/['"]/g, '').split('=')[1]
+    })[0]
+  }
+
   render () {
     const { className, fontSize } = this.props
     let fontFamily = this.props.fontFamily

package.json

@@ -58,6 +58,7 @@
     "electron-gh-releases": "^2.0.2",
     "flowchart.js": "^1.6.5",
     "font-awesome": "^4.3.0",
+    "iconv-lite": "^0.4.19",
     "immutable": "^3.8.1",
     "js-sequence-diagrams": "^1000000.0.6",
     "katex": "^0.8.3",

yarn.lock

@@ -3414,6 +3414,10 @@ iconv-lite@0.4.13, iconv-lite@~0.4.13:
   version "0.4.13"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.13.tgz#1f88aba4ab0b1508e8312acc39345f36e992e2f2"
 
+iconv-lite@^0.4.19:
+  version "0.4.19"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
+
 iconv-lite@~0.2.11:
   version "0.2.11"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.2.11.tgz#1ce60a3a57864a292d1321ff4609ca4bb965adc8"