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// 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.
#ifndef MOJO_RUNNER_URL_RESOLVER_H_
#define MOJO_RUNNER_URL_RESOLVER_H_
#include <map>
#include <set>
#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "url/gurl.h"
namespace mojo {
namespace runner {
// This class supports the mapping of URLs to other URLs.
// It's commonly used with mojo: URL, to provide a physical location (i.e.
// file: or https:) but works with any URL.
// By default, "mojo:" URLs resolve to a file location, with ".mojo" appended,
// but that resolution can be customized via the AddCustomMapping method.
class URLResolver {
public:
URLResolver();
~URLResolver();
// Used for the return value of GetOriginMappings().
struct OriginMapping {
OriginMapping(const std::string& origin, const std::string& base_url)
: origin(origin), base_url(base_url) {}
std::string origin;
std::string base_url;
};
// Returns a list of origin mappings based on command line args.
// The switch --map-origin can be specified multiple times. Each occurance
// has the format of --map-origin={origin}={base_url}
// For example:
// --map-origin=http://domokit.org=file:///source/out
static std::vector<OriginMapping> GetOriginMappings(
const base::CommandLine::StringVector& argv);
// Add a custom mapping for a particular URL. If |mapped_url| is
// itself a mojo url normal resolution rules apply.
void AddURLMapping(const GURL& url, const GURL& mapped_url);
// Add a custom mapping for all urls rooted at |origin|.
void AddOriginMapping(const GURL& origin, const GURL& base_url);
// Applies all custom mappings for |url|, returning the last non-mapped url.
// For example, if 'a' maps to 'b' and 'b' maps to 'c' calling this with 'a'
// returns 'c'.
GURL ApplyMappings(const GURL& url) const;
// If specified, then "mojo:" URLs will be resolved relative to this
// URL. That is, the portion after the colon will be appeneded to
// |mojo_base_url| with .mojo appended.
void SetMojoBaseURL(const GURL& mojo_base_url);
// Resolve the given "mojo:" URL to the URL that should be used to fetch the
// code for the corresponding Mojo App.
GURL ResolveMojoURL(const GURL& mojo_url) const;
private:
using GURLToGURLMap = std::map<GURL, GURL>;
GURLToGURLMap url_map_;
GURLToGURLMap origin_map_;
GURL mojo_base_url_;
DISALLOW_COPY_AND_ASSIGN(URLResolver);
};
} // namespace runner
} // namespace mojo
#endif // MOJO_RUNNER_URL_RESOLVER_H_
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