4c501a4217
Some parts stubbed out but you can plug in a mouse and move a green cursor around to interact with the UI. Change-Id: I80d597a7f11d3bd92041890f74b3c77326975e6e
107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2010 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef _UTILS_PROPERTY_MAP_H
|
|
#define _UTILS_PROPERTY_MAP_H
|
|
|
|
#include <utils/KeyedVector.h>
|
|
#include <utils/String8.h>
|
|
#include <utils/Errors.h>
|
|
#include <utils/Tokenizer.h>
|
|
|
|
namespace android {
|
|
|
|
/*
|
|
* Provides a mechanism for passing around string-based property key / value pairs
|
|
* and loading them from property files.
|
|
*
|
|
* The property files have the following simple structure:
|
|
*
|
|
* # Comment
|
|
* key = value
|
|
*
|
|
* Keys and values are any sequence of printable ASCII characters.
|
|
* The '=' separates the key from the value.
|
|
* The key and value may not contain whitespace.
|
|
*
|
|
* The '\' character is reserved for escape sequences and is not currently supported.
|
|
* The '"" character is reserved for quoting and is not currently supported.
|
|
* Files that contain the '\' or '"' character will fail to parse.
|
|
*
|
|
* The file must not contain duplicate keys.
|
|
*
|
|
* TODO Support escape sequences and quoted values when needed.
|
|
*/
|
|
class PropertyMap {
|
|
public:
|
|
/* Creates an empty property map. */
|
|
PropertyMap();
|
|
~PropertyMap();
|
|
|
|
/* Clears the property map. */
|
|
void clear();
|
|
|
|
/* Adds a property.
|
|
* Replaces the property with the same key if it is already present.
|
|
*/
|
|
void addProperty(const String8& key, const String8& value);
|
|
|
|
/* Returns true if the property map contains the specified key. */
|
|
bool hasProperty(const String8& key) const;
|
|
|
|
/* Gets the value of a property and parses it.
|
|
* Returns true and sets outValue if the key was found and its value was parsed successfully.
|
|
* Otherwise returns false and does not modify outValue. (Also logs a warning.)
|
|
*/
|
|
bool tryGetProperty(const String8& key, String8& outValue) const;
|
|
bool tryGetProperty(const String8& key, bool& outValue) const;
|
|
bool tryGetProperty(const String8& key, int32_t& outValue) const;
|
|
bool tryGetProperty(const String8& key, float& outValue) const;
|
|
|
|
/* Adds all values from the specified property map. */
|
|
void addAll(const PropertyMap* map);
|
|
|
|
/* Gets the underlying property map. */
|
|
inline const KeyedVector<String8, String8>& getProperties() const { return mProperties; }
|
|
|
|
/* Loads a property map from a file. */
|
|
static status_t load(const String8& filename, PropertyMap** outMap);
|
|
|
|
private:
|
|
class Parser {
|
|
PropertyMap* mMap;
|
|
Tokenizer* mTokenizer;
|
|
|
|
public:
|
|
Parser(PropertyMap* map, Tokenizer* tokenizer);
|
|
~Parser();
|
|
status_t parse();
|
|
|
|
private:
|
|
status_t parseType();
|
|
status_t parseKey();
|
|
status_t parseKeyProperty();
|
|
status_t parseModifier(const String8& token, int32_t* outMetaState);
|
|
status_t parseCharacterLiteral(char16_t* outCharacter);
|
|
};
|
|
|
|
KeyedVector<String8, String8> mProperties;
|
|
};
|
|
|
|
} // namespace android
|
|
|
|
#endif // _UTILS_PROPERTY_MAP_H
|