Ignore extensions

README.md

@@ -16,6 +16,7 @@ You can configure linter-ruby by editing ~/.atom/config.cson (choose Open Your C
 ```
 'linter-ruby':
   'rubyExecutablePath': null #ruby path. run 'which ruby' to find the path.
+  'ignoredExtensions': 'erb, md' #ignored extensions, ERB and markdown files by default.
 ```
 
 ## Contributing

lib/main.js

@@ -5,6 +5,13 @@ export default {
     rubyExecutablePath: {
       type: "string",
       default: "ruby"
+    },
+    ignoredExtensions: {
+      type: 'array',
+      default: ['erb', 'md'],
+      items: {
+        type: 'string'
+      }
     }
   },
 
@@ -31,14 +38,22 @@ export default {
 
   provideLinter: () => {
     const helpers = require("atom-linter");
+    const Path = require("path");
     const regex = /.+:(\d+):\s*(.+?):\s(.+)/;
     return {
       grammarScopes: ["source.ruby", "source.ruby.rails", "source.ruby.rspec"],
       scope: "file",
       lintOnFly: true,
       lint: (activeEditor) => {
         const command = atom.config.get("linter-ruby.rubyExecutablePath");
+        const ignored = atom.config.get("linter-ruby.ignoredExtensions");
         const filePath = activeEditor.getPath();
+        const fileExtension = Path.extname(filePath).substr(1);
+
+        for (let extension of ignored) {
+          if (fileExtension === extension) return [];
+        }
+
         return helpers.exec(command, ['-wc'], {stdin: activeEditor.getText(), stream: 'stderr'}).then(output => {
           var toReturn = [];
           output.split(/\r?\n/).forEach(function (line) {