Testrunner for 3rd parties.

utils/testrunner/utils.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/**
+ * Read the contents of a file [fileName] into a [List] of [String]s.
+ * If the file does not exist and [errorIfNoFile] is true, throw an
+ * exception, else return an empty list.
+ */
+List<String> getFileContents(String filename, bool errorIfNoFile) {
+  File f = new File(filename);
+  if (!f.existsSync()) {
+    if (errorIfNoFile) {
+      throw new Exception('Config file $filename not found.');
+    } else {
+      return new List();
+    }
+  }
+  return f.readAsLinesSync();
+}
+
+/** Copy a file with path [sourceName] to destination [destName]. */
+void copyFile(String sourceName, String destName) {
+  var sourceFile = new File(sourceName);
+  var destFile = new File(destName);
+  var istream = sourceFile.openInputStream();
+  var ostream = destFile.openOutputStream(FileMode.WRITE);
+  istream.pipe(ostream);
+  // TODO(gram) - make sure both streams are closed.
+  // I think they are but the docs are not clear on this point.
+}
+
+/** Create a file [fileName] and populate it with [contents]. */
+void createFile(String fileName, String contents) {
+  var file = new File(fileName);
+  var ostream = file.openOutputStream(FileMode.WRITE);
+  ostream.writeString(contents);
+  ostream.close();
+}
+
+/**
+ * Given a file path [path], make it absolute if it is relative,
+ * and return the result.
+ */
+String makePathAbsolute(String path) {
+  var p = new Path(path).canonicalize();
+  if (p.isAbsolute) {
+    return p.toString();
+  } else {
+    var cwd = new Path((new Directory.current()).path);
+    return cwd.join(p).toString();
+  }
+}
+
+/**
+ * Create the list of all the files in a set of directories
+ * ([dirs]) whose names match [filePat]. If [recurse] is true
+ * look at subdirectories too. Once they have all been enumerated,
+ * call [onComplete].
+ */
+void buildFileList(List dirs, RegExp filePat, bool recurse,
+                   Function onComplete) {
+  var files = new List();
+  var dirCount = 1;
+  for (var i = 0; i < dirs.length; i++) {
+    var path = dirs[i];
+    // Is this a regular file?
+    File f = new File(path);
+    if (f.existsSync()) {
+      if (filePat.hasMatch(path)) {
+        files.add(path);
+      }
+    } else { // Try treat it as a directory.
+      Directory d = new Directory(path);
+      if (d.existsSync()) {
+        ++dirCount;
+        var lister = d.list(recursive: recurse);
+        lister.onFile = (file) {
+          if (filePat.hasMatch(file)) {
+            files.add(file);
+          }
+        };
+        lister.onDone = (complete) {
+          if (complete && --dirCount == 0) {
+            onComplete(files);
+          }
+        };
+      } else { // Does not exist.
+        print('$path does not exist.');
+      }
+    }
+  }
+  if (--dirCount == 0) {
+    onComplete(files);
+  }
+}
+
+/** Delete a file. */
+void deleteFile(String fname) {
+  var f = new File(fname);
+  f.deleteSync();
+}