Extract .xsaccess files as JSON

Author: mbaluda

javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java

@@ -159,6 +159,7 @@
  *   <li>Files with base name "package.json" or "tsconfig.json", and files whose base name
  *       is of the form "codeql-javascript-*.json".
  *   <li>JavaScript, JSON or YAML files whose base name starts with ".eslintrc".
+ *   <li>JSON files whose base name is ".xsaccess".
  *   <li>All extension-less files.
  * </ul>
  *
@@ -393,9 +394,10 @@ private void setupFilters() {
     for (FileType filetype : defaultExtract)
       for (String extension : filetype.getExtensions()) patterns.add("**/*" + extension);
 
-    // include .eslintrc files, package.json files, tsconfig.json files, and
-    // codeql-javascript-*.json files
+    // include .eslintrc files, .xaccess files, package.json files, 
+    // tsconfig.json files, and codeql-javascript-*.json files
     patterns.add("**/.eslintrc*");
+    patterns.add("**/.xaccess");
     patterns.add("**/package.json");
     patterns.add("**/tsconfig*.json");
     patterns.add("**/codeql-javascript-*.json");

javascript/extractor/src/com/semmle/js/extractor/FileExtractor.java

@@ -184,8 +184,8 @@ protected boolean contains(File f, String lcExt, ExtractorConfig config) {
         if (super.contains(f, lcExt, config)) return true;
 
         // detect JSON-encoded configuration files whose name starts with `.` and ends with `rc`
-        // (e.g., `.eslintrc` or `.babelrc`)
-        if (f.isFile() && f.getName().matches("\\..*rc")) {
+        // (e.g., `.eslintrc` or `.babelrc`) as well as `.xsaccess` files
+        if (f.isFile() && f.getName().matches("\\..*rc|\\.xsaccess")) {
           try (BufferedReader br = new BufferedReader(new FileReader(f))) {
             // check whether the first two non-empty lines look like the start of a JSON object
             // (two lines because the opening brace is usually on a line by itself)

javascript/extractor/test/com/semmle/js/extractor/test/AutoBuildTests.java

@@ -461,8 +461,10 @@ public void hiddenFolders() throws IOException {
 
   @Test
   public void hiddenFiles() throws IOException {
-    Path eslintrc = addFile(true, LGTM_SRC, ".eslintrc.json");
+    Path eslintrc = addFile(true, LGTM_SRC, ".eslintrc.json", ".xsaccess");
     hide(eslintrc);
+    Path xsaccess = addFile(true, LGTM_SRC, ".xsaccess");
+    hide(xsaccess);
     runTest();
   }