Mojo: Use network service to load non-local Mojo Apps.

mojo/shell/mojo_url_resolver.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/shell/mojo_url_resolver.h"
+
+#include "base/base_paths.h"
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "base/path_service.h"
+#include "net/base/filename_util.h"
+
+namespace mojo {
+namespace shell {
+namespace {
+
+std::string MakeSharedLibraryName(const std::string& file_name) {
+#if defined(OS_WIN)
+  return file_name + ".dll";
+#elif defined(OS_LINUX)
+  return "lib" + file_name + ".so";
+#elif defined(OS_MACOSX)
+  return "lib" + file_name + ".dylib";
+#else
+  NOTREACHED() << "dynamic loading of services not supported";
+  return std::string();
+#endif
+}
+
+}  // namespace
+
+MojoURLResolver::MojoURLResolver() {
+}
+
+MojoURLResolver::~MojoURLResolver() {
+}
+
+void MojoURLResolver::AddCustomMapping(const GURL& mojo_url,
+                                       const GURL& resolved_url) {
+  url_map_[mojo_url] = resolved_url;
+}
+
+void MojoURLResolver::AddLocalFileMapping(const GURL& mojo_url) {
+  local_file_set_.insert(mojo_url);
+}
+
+GURL MojoURLResolver::Resolve(const GURL& mojo_url) const {
+  std::map<GURL, GURL>::const_iterator it = url_map_.find(mojo_url);
+  if (it != url_map_.end())
+    return it->second;
+
+  std::string lib = MakeSharedLibraryName(mojo_url.ExtractFileName());
+
+  if (local_file_set_.find(mojo_url) != local_file_set_.end()) {
+    // Resolve to a local file URL.
+    base::FilePath path;
+    PathService::Get(base::DIR_EXE, &path);
+#if !defined(OS_WIN)
+    path = path.Append(FILE_PATH_LITERAL("lib"));
+#endif
+    path = path.Append(base::FilePath::FromUTF8Unsafe(lib));
+    return net::FilePathToFileURL(path);
+  }
+
+  // Otherwise, resolve to an URL relative to origin_.
+  return GURL(origin_ + "/" + lib);
+}
+
+}  // namespace shell
+}  // namespace mojo