1 files changed, 90 insertions, 0 deletions
diff --git a/V8Binding/v8/JSXPathNSResolver.cpp b/V8Binding/v8/JSXPathNSResolver.cpp
new file mode 100644
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--- /dev/null
+++ b/V8Binding/v8/JSXPathNSResolver.cpp
@@ -0,0 +1,90 @@
+// Copyright (c) 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "config.h"
+#include "JSXPathNSResolver.h"
+
+#if ENABLE(XPATH)
+
+#include "v8_proxy.h"
+#include "v8_binding.h"
+#include "PlatformString.h"
+
+namespace WebCore {
+
+JSXPathNSResolver::JSXPathNSResolver(v8::Handle<v8::Object> resolver)
+: m_resolver(resolver) {
+}
+
+JSXPathNSResolver::~JSXPathNSResolver() {
+}
+
+String JSXPathNSResolver::lookupNamespaceURI(const String& prefix) {
+  v8::Handle<v8::Function> lookupNamespaceURIFunc;
+  v8::Handle<v8::String> lookupNamespaceURIName = v8::String::New("lookupNamespaceURI");
+
+  // Check if the resolver has a function property named lookupNamespaceURI.
+  if (m_resolver->Has(lookupNamespaceURIName)) {
+    v8::Handle<v8::Value> lookupNamespaceURI = m_resolver->Get(lookupNamespaceURIName);
+    if (lookupNamespaceURI->IsFunction()) {
+      lookupNamespaceURIFunc = v8::Handle<v8::Function>::Cast(lookupNamespaceURI);
+    }
+  }
+
+  if (lookupNamespaceURIFunc.IsEmpty() && !m_resolver->IsFunction()) {
+    Frame* frame = V8Proxy::retrieveActiveFrame();
+    log_info(frame, "XPathNSResolver does not have a lookupNamespaceURI method.", String());
+    return String();
+  }
+
+  // Catch exceptions from calling the namespace resolver.
+  v8::TryCatch try_catch;
+  try_catch.SetVerbose(true);  // Print exceptions to console.
+
+  const int argc = 1;
+  v8::Handle<v8::Value> argv[argc] = { v8String(prefix) };
+  v8::Handle<v8::Function> function = lookupNamespaceURIFunc.IsEmpty()
+      ? v8::Handle<v8::Function>::Cast(m_resolver)
+      : lookupNamespaceURIFunc;
+
+  V8Proxy* proxy = V8Proxy::retrieve();
+  v8::Handle<v8::Value> retval = proxy->CallFunction(function, m_resolver, argc, argv);
+
+  // Eat exceptions from namespace resolver and return an empty string. This
+  // will most likely cause NAMESPACE_ERR.
+  if (try_catch.HasCaught()) {
+    return String();
+  }
+
+  return ToWebCoreString(retval);
+}
+
+}
+
+#endif // ENABLE(XPATH)