1 files changed, 89 insertions, 0 deletions
diff --git a/layout/style/test/ParseCSS.cpp b/layout/style/test/ParseCSS.cpp
new file mode 100644
index 000000000..3f407c6f0
--- /dev/null
+++ b/layout/style/test/ParseCSS.cpp
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+// 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_InitXPCOM2(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;
+}