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/*
* Copyright (C) 2015 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 AAPT_CONFIG_DESCRIPTION_H
#define AAPT_CONFIG_DESCRIPTION_H
#include <ostream>
#include "androidfw/ResourceTypes.h"
#include "androidfw/StringPiece.h"
namespace aapt {
/*
* Subclass of ResTable_config that adds convenient
* initialization and comparison methods.
*/
struct ConfigDescription : public android::ResTable_config {
/**
* Returns an immutable default config.
*/
static const ConfigDescription& DefaultConfig();
/*
* Parse a string of the form 'fr-sw600dp-land' and fill in the
* given ResTable_config with resulting configuration parameters.
*
* The resulting configuration has the appropriate sdkVersion defined
* for backwards compatibility.
*/
static bool Parse(const android::StringPiece& str, ConfigDescription* out = nullptr);
/**
* If the configuration uses an axis that was added after
* the original Android release, make sure the SDK version
* is set accordingly.
*/
static void ApplyVersionForCompatibility(ConfigDescription* config);
ConfigDescription();
ConfigDescription(const android::ResTable_config& o); // NOLINT(implicit)
ConfigDescription(const ConfigDescription& o);
ConfigDescription(ConfigDescription&& o);
ConfigDescription& operator=(const android::ResTable_config& o);
ConfigDescription& operator=(const ConfigDescription& o);
ConfigDescription& operator=(ConfigDescription&& o);
ConfigDescription CopyWithoutSdkVersion() const;
/**
* A configuration X dominates another configuration Y, if X has at least the
* precedence of Y and X is strictly more general than Y: for any type defined
* by X, the same type is defined by Y with a value equal to or, in the case
* of ranges, more specific than that of X.
*
* For example, the configuration 'en-w800dp' dominates 'en-rGB-w1024dp'. It
* does not dominate 'fr', 'en-w720dp', or 'mcc001-en-w800dp'.
*/
bool Dominates(const ConfigDescription& o) const;
/**
* Returns true if this configuration defines a more important configuration
* parameter than o. For example, "en" has higher precedence than "v23",
* whereas "en" has the same precedence as "en-v23".
*/
bool HasHigherPrecedenceThan(const ConfigDescription& o) const;
/**
* A configuration conflicts with another configuration if both
* configurations define an incompatible configuration parameter. An
* incompatible configuration parameter is a non-range, non-density parameter
* that is defined in both configurations as a different, non-default value.
*/
bool ConflictsWith(const ConfigDescription& o) const;
/**
* A configuration is compatible with another configuration if both
* configurations can match a common concrete device configuration and are
* unrelated by domination. For example, land-v11 conflicts with port-v21
* but is compatible with v21 (both land-v11 and v21 would match en-land-v23).
*/
bool IsCompatibleWith(const ConfigDescription& o) const;
bool MatchWithDensity(const ConfigDescription& o) const;
bool operator<(const ConfigDescription& o) const;
bool operator<=(const ConfigDescription& o) const;
bool operator==(const ConfigDescription& o) const;
bool operator!=(const ConfigDescription& o) const;
bool operator>=(const ConfigDescription& o) const;
bool operator>(const ConfigDescription& o) const;
};
inline ConfigDescription::ConfigDescription() {
memset(this, 0, sizeof(*this));
size = sizeof(android::ResTable_config);
}
inline ConfigDescription::ConfigDescription(const android::ResTable_config& o) {
*static_cast<android::ResTable_config*>(this) = o;
size = sizeof(android::ResTable_config);
}
inline ConfigDescription::ConfigDescription(const ConfigDescription& o) {
*static_cast<android::ResTable_config*>(this) = o;
}
inline ConfigDescription::ConfigDescription(ConfigDescription&& o) {
*this = o;
}
inline ConfigDescription& ConfigDescription::operator=(
const android::ResTable_config& o) {
*static_cast<android::ResTable_config*>(this) = o;
size = sizeof(android::ResTable_config);
return *this;
}
inline ConfigDescription& ConfigDescription::operator=(
const ConfigDescription& o) {
*static_cast<android::ResTable_config*>(this) = o;
return *this;
}
inline ConfigDescription& ConfigDescription::operator=(ConfigDescription&& o) {
*this = o;
return *this;
}
inline bool ConfigDescription::MatchWithDensity(
const ConfigDescription& o) const {
return match(o) && (density == 0 || density == o.density);
}
inline bool ConfigDescription::operator<(const ConfigDescription& o) const {
return compare(o) < 0;
}
inline bool ConfigDescription::operator<=(const ConfigDescription& o) const {
return compare(o) <= 0;
}
inline bool ConfigDescription::operator==(const ConfigDescription& o) const {
return compare(o) == 0;
}
inline bool ConfigDescription::operator!=(const ConfigDescription& o) const {
return compare(o) != 0;
}
inline bool ConfigDescription::operator>=(const ConfigDescription& o) const {
return compare(o) >= 0;
}
inline bool ConfigDescription::operator>(const ConfigDescription& o) const {
return compare(o) > 0;
}
inline ::std::ostream& operator<<(::std::ostream& out,
const ConfigDescription& o) {
return out << o.toString().string();
}
} // namespace aapt
#endif // AAPT_CONFIG_DESCRIPTION_H
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