1 files changed, 50 insertions, 11 deletions

diff --git a/app/assets/javascripts/ide/utils.js b/app/assets/javascripts/ide/utils.js
index 1ea2b199237..c28a2bd9f1d 100644
--- a/app/assets/javascripts/ide/utils.js
+++ b/app/assets/javascripts/ide/utils.js
@@ -1,4 +1,4 @@
-import { commitItemIconMap } from './constants';
+import { SIDE_LEFT, SIDE_RIGHT } from './constants';
 import { languages } from 'monaco-editor';
 import { flatten } from 'lodash';
 
@@ -53,16 +53,6 @@ export function isTextFile(content, mimeType, fileName) {
   return asciiRegex.test(content);
 }
 
-export const getCommitIconMap = file => {
-  if (file.deleted) {
-    return commitItemIconMap.deleted;
-  } else if (file.tempFile && !file.prevPath) {
-    return commitItemIconMap.addition;
-  }
-
-  return commitItemIconMap.modified;
-};
-
 export const createPathWithExt = p => {
   const ext = p.lastIndexOf('.') >= 0 ? p.substring(p.lastIndexOf('.') + 1) : '';
 
@@ -84,3 +74,52 @@ export function registerLanguages(def, ...defs) {
   languages.setMonarchTokensProvider(languageId, def.language);
   languages.setLanguageConfiguration(languageId, def.conf);
 }
+
+export const otherSide = side => (side === SIDE_RIGHT ? SIDE_LEFT : SIDE_RIGHT);
+
+export function trimTrailingWhitespace(content) {
+  return content.replace(/[^\S\r\n]+$/gm, '');
+}
+
+export function insertFinalNewline(content, eol = '\n') {
+  return content.slice(-eol.length) !== eol ? `${content}${eol}` : content;
+}
+
+export function getPathParents(path, maxDepth = Infinity) {
+  const pathComponents = path.split('/');
+  const paths = [];
+
+  let depth = 0;
+  while (pathComponents.length && depth < maxDepth) {
+    pathComponents.pop();
+
+    let parentPath = pathComponents.join('/');
+    if (parentPath.startsWith('/')) parentPath = parentPath.slice(1);
+    if (parentPath) paths.push(parentPath);
+
+    depth += 1;
+  }
+
+  return paths;
+}
+
+export function getPathParent(path) {
+  return getPathParents(path, 1)[0];
+}
+
+/**
+ * Takes a file object and returns a data uri of its contents.
+ *
+ * @param {File} file
+ */
+export function readFileAsDataURL(file) {
+  return new Promise(resolve => {
+    const reader = new FileReader();
+    reader.addEventListener('load', e => resolve(e.target.result), { once: true });
+    reader.readAsDataURL(file);
+  });
+}
+
+export function getFileEOL(content = '') {
+  return content.includes('\r\n') ? 'CRLF' : 'LF';
+}