mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
83 lines
3.2 KiB
C++
83 lines
3.2 KiB
C++
// Copyright (c) 2012 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 BASE_PATH_SERVICE_H_
|
|
#define BASE_PATH_SERVICE_H_
|
|
|
|
#include <string>
|
|
|
|
#include "base/base_export.h"
|
|
#include "base/base_paths.h"
|
|
#include "base/gtest_prod_util.h"
|
|
#include "build/build_config.h"
|
|
|
|
namespace base {
|
|
class FilePath;
|
|
class ScopedPathOverride;
|
|
} // namespace
|
|
|
|
// The path service is a global table mapping keys to file system paths. It is
|
|
// OK to use this service from multiple threads.
|
|
//
|
|
class BASE_EXPORT PathService {
|
|
public:
|
|
// Retrieves a path to a special directory or file and places it into the
|
|
// string pointed to by 'path'. If you ask for a directory it is guaranteed
|
|
// to NOT have a path separator at the end. For example, "c:\windows\temp"
|
|
// Directories are also guaranteed to exist when this function succeeds.
|
|
//
|
|
// Returns true if the directory or file was successfully retrieved. On
|
|
// failure, 'path' will not be changed.
|
|
static bool Get(int key, base::FilePath* path);
|
|
|
|
// Overrides the path to a special directory or file. This cannot be used to
|
|
// change the value of DIR_CURRENT, but that should be obvious. Also, if the
|
|
// path specifies a directory that does not exist, the directory will be
|
|
// created by this method. This method returns true if successful.
|
|
//
|
|
// If the given path is relative, then it will be resolved against
|
|
// DIR_CURRENT.
|
|
//
|
|
// WARNING: Consumers of PathService::Get may expect paths to be constant
|
|
// over the lifetime of the app, so this method should be used with caution.
|
|
static bool Override(int key, const base::FilePath& path);
|
|
|
|
// This function does the same as PathService::Override but it takes an extra
|
|
// parameter |create| which guides whether the directory to be overriden must
|
|
// be created in case it doesn't exist already.
|
|
static bool OverrideAndCreateIfNeeded(int key,
|
|
const base::FilePath& path,
|
|
bool create);
|
|
|
|
// To extend the set of supported keys, you can register a path provider,
|
|
// which is just a function mirroring PathService::Get. The ProviderFunc
|
|
// returns false if it cannot provide a non-empty path for the given key.
|
|
// Otherwise, true is returned.
|
|
//
|
|
// WARNING: This function could be called on any thread from which the
|
|
// PathService is used, so a the ProviderFunc MUST BE THREADSAFE.
|
|
//
|
|
typedef bool (*ProviderFunc)(int, base::FilePath*);
|
|
|
|
// Call to register a path provider. You must specify the range "[key_start,
|
|
// key_end)" of supported path keys.
|
|
static void RegisterProvider(ProviderFunc provider,
|
|
int key_start,
|
|
int key_end);
|
|
|
|
// Disable internal cache.
|
|
static void DisableCache();
|
|
|
|
private:
|
|
friend class base::ScopedPathOverride;
|
|
FRIEND_TEST_ALL_PREFIXES(PathServiceTest, RemoveOverride);
|
|
|
|
// Removes an override for a special directory or file. Returns true if there
|
|
// was an override to remove or false if none was present.
|
|
// NOTE: This function is intended to be used by tests only!
|
|
static bool RemoveOverride(int key);
|
|
};
|
|
|
|
#endif // BASE_PATH_SERVICE_H_
|