Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/runner/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/runner/url_resolver.h"
-
-#include "base/base_paths.h"
-#include "base/logging.h"
-#include "base/strings/utf_string_conversions.h"
-#include "mojo/runner/switches.h"
-#include "mojo/shell/query_util.h"
-#include "mojo/util/filename_util.h"
-#include "url/url_util.h"
-
-namespace mojo {
-namespace runner {
-
-URLResolver::URLResolver() {
-  // Needed to treat first component of mojo URLs as host, not path.
-  url::AddStandardScheme("mojo", url::SCHEME_WITHOUT_AUTHORITY);
-}
-
-URLResolver::~URLResolver() {
-}
-
-// static
-std::vector<URLResolver::OriginMapping> URLResolver::GetOriginMappings(
-    const base::CommandLine::StringVector& args) {
-  std::vector<OriginMapping> origin_mappings;
-  const std::string kArgsForSwitches[] = {
-      "-" + std::string(switches::kMapOrigin) + "=",
-      "--" + std::string(switches::kMapOrigin) + "=",
-  };
-  for (auto& arg : args) {
-    for (size_t i = 0; i < arraysize(kArgsForSwitches); i++) {
-      const std::string& argsfor_switch = kArgsForSwitches[i];
-      std::string arg_string;
-#if defined(OS_WIN)
-      arg_string = base::UTF16ToUTF8(arg);
-#else
-      arg_string = arg;
-#endif
-      if (arg_string.compare(0, argsfor_switch.size(), argsfor_switch) == 0) {
-        std::string value =
-            arg_string.substr(argsfor_switch.size(), std::string::npos);
-        size_t delim = value.find('=');
-        if (delim <= 0 || delim >= value.size())
-          continue;
-        origin_mappings.push_back(
-            OriginMapping(value.substr(0, delim),
-                          value.substr(delim + 1, std::string::npos)));
-      }
-    }
-  }
-  return origin_mappings;
-}
-
-void URLResolver::AddURLMapping(const GURL& url, const GURL& mapped_url) {
-  url_map_[url] = mapped_url;
-}
-
-void URLResolver::AddOriginMapping(const GURL& origin, const GURL& base_url) {
-  if (!origin.is_valid() || !base_url.is_valid() ||
-      origin != origin.GetOrigin()) {
-    // Disallow invalid mappings.
-    LOG(ERROR) << "Invalid origin for mapping: " << origin;
-    return;
-  }
-  // Force both origin and base_url to have trailing slashes.
-  origin_map_[origin] = util::AddTrailingSlashIfNeeded(base_url);
-}
-
-GURL URLResolver::ApplyMappings(const GURL& url) const {
-  std::string query;
-  GURL mapped_url = shell::GetBaseURLAndQuery(url, &query);
-  for (;;) {
-    const auto& url_it = url_map_.find(mapped_url);
-    if (url_it != url_map_.end()) {
-      mapped_url = url_it->second;
-      continue;
-    }
-
-    GURL origin = mapped_url.GetOrigin();
-    const auto& origin_it = origin_map_.find(origin);
-    if (origin_it == origin_map_.end())
-      break;
-    mapped_url = GURL(origin_it->second.spec() +
-                      mapped_url.spec().substr(origin.spec().length()));
-  }
-
-  if (query.length())
-    mapped_url = GURL(mapped_url.spec() + query);
-  return mapped_url;
-}
-
-void URLResolver::SetMojoBaseURL(const GURL& mojo_base_url) {
-  DCHECK(mojo_base_url.is_valid());
-  // Force a trailing slash on the base_url to simplify resolving
-  // relative files and URLs below.
-  mojo_base_url_ = util::AddTrailingSlashIfNeeded(mojo_base_url);
-}
-
-GURL URLResolver::ResolveMojoURL(const GURL& mojo_url) const {
-  if (mojo_url.scheme() != "mojo") {
-    // The mapping has produced some sort of non-mojo: URL - file:, http:, etc.
-    return mojo_url;
-  }
-
-  // It's still a mojo: URL, use the default mapping scheme.
-  std::string query;
-  GURL base_url = shell::GetBaseURLAndQuery(mojo_url, &query);
-  const std::string host = base_url.host();
-  return mojo_base_url_.Resolve(host + "/" + host + ".mojo" + query);
-}
-
-}  // namespace runner
-}  // namespace mojo