Re-implement file ignoring

Since JSHint can't handle `.jshintignore` files for content sent in via
stdin, check this manually using `minimatch`.

Also sets the CWD for better automatic resolution of the configuration,
since that at least works within JSHint.

decls/minimatch.js

@@ -0,0 +1,20 @@
+// @flow
+
+declare type MinimatchOptions = {
+  debug?: boolean,
+  nobrace?: boolean,
+  noglobstar?: boolean,
+  dot?: boolean,
+  noext?: boolean,
+  nocase?: boolean,
+  nonull?: boolean,
+  matchBase?: boolean,
+  nocomment?: boolean,
+  nonegate?: boolean,
+  flipNegate?: boolean,
+}
+
+declare module 'minimatch' {
+  declare module.exports:
+    (path: string, pattern: string, options?: MinimatchOptions) => boolean;
+}

lib/main.js

@@ -3,11 +3,24 @@
 /* @flow */
 
 import Path from 'path';
+import { readFile } from 'fs';
+import minimatch from 'minimatch';
 /* eslint-disable import/extensions, import/no-extraneous-dependencies */
 import { CompositeDisposable } from 'atom';
 import type { TextEditor } from 'atom';
 /* eslint-enable import/extensions, import/no-extraneous-dependencies */
 
+async function readIgnoreList(ignorePath) {
+  return new Promise((resolve, reject) => {
+    readFile(ignorePath, 'utf8', (err, data) => {
+      if (err) {
+        reject(err);
+      }
+      resolve(data.split(/[\r\n]/));
+    });
+  });
+}
+
 module.exports = {
   config: {
     executablePath: {
@@ -18,17 +31,22 @@ module.exports = {
     lintInlineJavaScript: {
       type: 'boolean',
       default: false,
-      description: 'Lint JavaScript inside `<script>` blocks in HTML or PHP files.',
+      description: 'Attempts to lint JavaScript inside `<script>` blocks in HTML or PHP files.',
     },
     disableWhenNoJshintrcFileInPath: {
       type: 'boolean',
       default: false,
-      description: 'Disable linter when no `.jshintrc` is found in project.',
+      description: 'Disable the provider when no configuration file is found.',
     },
     jshintFileName: {
       type: 'string',
       default: '.jshintrc',
-      description: 'jshint file name',
+      description: 'Custom name for the .jshintrc file',
+    },
+    jshintignoreFilename: {
+      type: 'string',
+      default: '.jshintignore',
+      description: 'Custom name for the .jshintignore file',
     },
   },
 
@@ -37,32 +55,30 @@ module.exports = {
 
     this.scopes = ['source.js', 'source.js-semantic'];
     this.subscriptions = new CompositeDisposable();
-    this.subscriptions.add(atom.config.observe('linter-jshint.executablePath', (executablePath) => {
-      this.executablePath = executablePath;
-    }));
-    this.subscriptions.add(
-      atom.config.observe('linter-jshint.disableWhenNoJshintrcFileInPath',
-        (disableWhenNoJshintrcFileInPath) => {
-          this.disableWhenNoJshintrcFileInPath = disableWhenNoJshintrcFileInPath;
-        },
-      ),
-    );
-
-    this.subscriptions.add(atom.config.observe('linter-jshint.jshintFileName', (jshintFileName) => {
-      this.jshintFileName = jshintFileName;
-    }));
 
-    const scopeEmbedded = 'source.js.embedded.html';
-    this.subscriptions.add(atom.config.observe('linter-jshint.lintInlineJavaScript',
-      (lintInlineJavaScript) => {
-        this.lintInlineJavaScript = lintInlineJavaScript;
-        if (lintInlineJavaScript) {
+    this.subscriptions.add(
+      atom.config.observe('linter-jshint.executablePath', (value) => {
+        this.executablePath = value;
+      }),
+      atom.config.observe('linter-jshint.disableWhenNoJshintrcFileInPath', (value) => {
+        this.disableWhenNoJshintrcFileInPath = value;
+      }),
+      atom.config.observe('linter-jshint.jshintFileName', (value) => {
+        this.jshintFileName = value;
+      }),
+      atom.config.observe('linter-jshint.jshintignoreFilename', (value) => {
+        this.jshintignoreFilename = value;
+      }),
+      atom.config.observe('linter-jshint.lintInlineJavaScript', (value) => {
+        const scopeEmbedded = 'source.js.embedded.html';
+        this.lintInlineJavaScript = value;
+        if (value) {
           this.scopes.push(scopeEmbedded);
         } else if (this.scopes.indexOf(scopeEmbedded) !== -1) {
           this.scopes.splice(this.scopes.indexOf(scopeEmbedded), 1);
         }
-      },
-    ));
+      }),
+    );
   },
 
   deactivate() {
@@ -81,27 +97,42 @@ module.exports = {
       lint: async (textEditor: TextEditor) => {
         const results = [];
         const filePath = textEditor.getPath();
+        const fileDir = Path.dirname(filePath);
         const fileContents = textEditor.getText();
         const parameters = ['--reporter', Reporter, '--filename', filePath];
 
-        const configFile = await Helpers.findCachedAsync(
-          Path.dirname(filePath), this.jshintFileName,
-        );
+        const configFile = await Helpers.findCachedAsync(fileDir, this.jshintFileName);
 
         if (configFile) {
           parameters.push('--config', configFile);
         } else if (this.disableWhenNoJshintrcFileInPath) {
           return results;
         }
 
+        const ignoreFile = await Helpers.findCachedAsync(fileDir, this.jshintignoreFilename);
+
+        if (ignoreFile) {
+          // JSHint completely ignores .jshintignore files for STDIN on it's own
+          // so we must re-implement the functionality
+          const ignoreList = await readIgnoreList(ignoreFile);
+          if (ignoreList.some(pattern => minimatch(filePath, pattern))) {
+            // The file is ignored by one of the patterns
+            return [];
+          }
+        }
+
         if (this.lintInlineJavaScript &&
           textEditor.getGrammar().scopeName.indexOf('text.html') !== -1
         ) {
           parameters.push('--extract', 'always');
         }
         parameters.push('-');
 
-        const execOpts = { stdin: fileContents, ignoreExitCode: true };
+        const execOpts = {
+          stdin: fileContents,
+          ignoreExitCode: true,
+          cwd: fileDir,
+        };
         const result = await Helpers.execNode(
           this.executablePath, parameters, execOpts,
         );

package.json

@@ -16,7 +16,8 @@
     "atom-linter": "^10.0.0",
     "atom-package-deps": "^4.0.1",
     "jshint": "2.9.4",
-    "jshint-json": "^1.0.0"
+    "jshint-json": "^1.0.0",
+    "minimatch": "^3.0.3"
   },
   "devDependencies": {
     "babel-eslint": "^7.2.3",