move some helpers to ts (#2399)

1 files changed, 108 insertions, 0 deletions

diff --git a/server/sonar-web/src/main/js/helpers/path.ts b/server/sonar-web/src/main/js/helpers/path.ts
new file mode 100644
index 00000000000..2ea8d4f5963
--- /dev/null
+++ b/server/sonar-web/src/main/js/helpers/path.ts
@@ -0,0 +1,108 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2017 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+export function collapsePath(path: string, limit = 30): string {
+  if (typeof path !== 'string') {
+    return '';
+  }
+
+  const tokens = path.split('/');
+
+  if (tokens.length <= 2) {
+    return path;
+  }
+
+  const head = tokens[0];
+  const tail = tokens[tokens.length - 1];
+  const middle = tokens.slice(1, -1);
+  let cut = false;
+
+  while (middle.join().length > limit && middle.length > 0) {
+    middle.shift();
+    cut = true;
+  }
+
+  const body = [head, ...(cut ? ['...'] : []), ...middle, tail];
+  return body.join('/');
+}
+
+/**
+ * Return a collapsed path without a file name
+ * @example
+ * // returns 'src/.../js/components/navigator/app/models/'
+ * collapsedDirFromPath('src/main/js/components/navigator/app/models/state.js')
+ */
+export function collapsedDirFromPath(path: string | null): string | null {
+  const limit = 30;
+  if (typeof path === 'string') {
+    const tokens = path.split('/').slice(0, -1);
+    if (tokens.length > 2) {
+      const head = tokens[0];
+      const tail = tokens[tokens.length - 1];
+      const middle = tokens.slice(1, -1);
+
+      let cut = false;
+      while (middle.join().length > limit && middle.length > 0) {
+        middle.shift();
+        cut = true;
+      }
+      const body = [head, ...(cut ? ['...'] : []), ...middle, tail];
+      return body.join('/') + '/';
+    } else {
+      return tokens.join('/') + '/';
+    }
+  } else {
+    return null;
+  }
+}
+
+/**
+ * Return a file name for a given file path
+ * * @example
+ * // returns 'state.js'
+ * collapsedDirFromPath('src/main/js/components/navigator/app/models/state.js')
+ */
+export function fileFromPath(path: string | null): string | null {
+  if (typeof path === 'string') {
+    const tokens = path.split('/');
+    return tokens[tokens.length - 1];
+  } else {
+    return null;
+  }
+}
+
+export function splitPath(path: string): { head: string; tail: string } | null {
+  if (typeof path === 'string') {
+    const tokens = path.split('/');
+    return {
+      head: tokens.slice(0, -1).join('/'),
+      tail: tokens[tokens.length - 1]
+    };
+  } else {
+    return null;
+  }
+}
+
+export function limitComponentName(str: string, limit = 30): string {
+  if (typeof str === 'string') {
+    return str.length > limit ? str.substr(0, limit) + '...' : str;
+  } else {
+    return '';
+  }
+}