1 files changed, 80 insertions, 0 deletions
diff --git a/layout/style/test/ParseCSS.cpp b/layout/style/test/ParseCSS.cpp
new file mode 100644
index 0000000000..04e37d48e2
--- /dev/null
+++ b/layout/style/test/ParseCSS.cpp
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+// vim:cindent:ts=8:et:sw=4:
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This file is meant to be used with |#define CSS_REPORT_PARSE_ERRORS|
+ * in mozilla/dom/html/style/src/nsCSSScanner.h uncommented, and the
+ * |#ifdef DEBUG| block in nsCSSScanner::OutputError (in
+ * nsCSSScanner.cpp in the same directory) used (even if not a debug
+ * build).
+ */
+
+#include "nsXPCOM.h"
+#include "nsCOMPtr.h"
+
+#include "nsIFile.h"
+#include "nsNetUtil.h"
+
+#include "nsContentCID.h"
+#include "mozilla/StyleSheetInlines.h"
+#include "mozilla/css/Loader.h"
+
+using namespace mozilla;
+
+static already_AddRefed<nsIURI> FileToURI(const char* aFilename,
+                                          nsresult* aRv = 0) {
+  nsCOMPtr<nsIFile> lf(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, aRv));
+  NS_ENSURE_TRUE(lf, nullptr);
+  // XXX Handle relative paths somehow.
+  lf->InitWithNativePath(nsDependentCString(aFilename));
+
+  nsIURI* uri = nullptr;
+  nsresult rv = NS_NewFileURI(&uri, lf);
+  if (aRv) *aRv = rv;
+  return uri;
+}
+
+static int ParseCSSFile(nsIURI* aSheetURI) {
+  RefPtr<mozilla::css::Loader> = new mozilla::css::Loader();
+  RefPtr<CSSStyleSheet> sheet;
+  loader->LoadSheetSync(aSheetURI, getter_AddRefs(sheet));
+  NS_ASSERTION(sheet, "sheet load failed");
+  /* This can happen if the file can't be found (e.g. you
+   * ask for a relative path and xpcom/io rejects it)
+   */
+  if (!sheet) return -1;
+  bool complete;
+  sheet->GetComplete(complete);
+  NS_ASSERTION(complete, "synchronous load did not complete");
+  if (!complete) return -2;
+  return 0;
+}
+
+int main(int argc, char** argv) {
+  if (argc < 2) {
+    fprintf(stderr, "%s [FILE]...\n", argv[0]);
+  }
+  nsresult rv = NS_InitXPCOM(nullptr, nullptr, nullptr);
+  if (NS_FAILED(rv)) return (int)rv;
+
+  int res = 0;
+  for (int i = 1; i < argc; ++i) {
+    const char* filename = argv[i];
+
+    printf("\nParsing %s.\n", filename);
+
+    nsCOMPtr<nsIURI> uri = FileToURI(filename, &rv);
+    if (rv == NS_ERROR_OUT_OF_MEMORY) {
+      fprintf(stderr, "Out of memory.\n");
+      return 1;
+    }
+    if (uri) res = ParseCSSFile(uri);
+  }
+
+  NS_ShutdownXPCOM(nullptr);
+
+  return res;
+}