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//
// Copyright 2011 The Android Open Source Project
//
// Build resource files from raw assets.
//
#ifndef RESOURCE_FILTER_H
#define RESOURCE_FILTER_H
#include <androidfw/ResourceTypes.h>
#include <set>
#include <utility>
#include <utils/Errors.h>
#include <utils/String8.h>
#include <utils/StrongPointer.h>
#include <utils/Vector.h>
#include "AaptAssets.h"
#include "ConfigDescription.h"
class ResourceFilter : public virtual android::RefBase {
public:
virtual bool match(const android::ResTable_config& config) const = 0;
};
/**
* Implements logic for parsing and handling "-c" options.
*/
class WeakResourceFilter : public ResourceFilter {
public:
WeakResourceFilter()
: mContainsPseudoAccented(false)
, mContainsPseudoBidi(false) {}
android::status_t parse(const android::String8& str);
bool match(const android::ResTable_config& config) const;
inline bool isEmpty() const {
return mConfigMask == 0;
}
inline bool containsPseudo() const {
return mContainsPseudoAccented;
}
inline bool containsPseudoBidi() const {
return mContainsPseudoBidi;
}
private:
ConfigDescription mDefault;
uint32_t mConfigMask;
android::Vector<std::pair<ConfigDescription, uint32_t> > mConfigs;
bool mContainsPseudoAccented;
bool mContainsPseudoBidi;
};
/**
* Matches resources that have at least one of the configurations
* that this filter is looking for. In order to match a configuration,
* the resource must have the exact same configuration.
*
* This filter acts as a logical OR when matching resources.
*
* For example, if the filter is looking for resources with
* fr-land, de-land, or sw600dp:
*
* (PASS) fr-land
* (FAIL) fr
* (PASS) de-land
* (FAIL) de
* (FAIL) de-sw600dp
* (PASS) sw600dp
* (FAIL) sw600dp-land
*/
class StrongResourceFilter : public ResourceFilter {
public:
StrongResourceFilter() {}
StrongResourceFilter(const std::set<ConfigDescription>& configs)
: mConfigs(configs) {}
android::status_t parse(const android::String8& str);
bool match(const android::ResTable_config& config) const {
std::set<ConfigDescription>::const_iterator iter = mConfigs.begin();
for (; iter != mConfigs.end(); iter++) {
if (iter->compare(config) == 0) {
return true;
}
}
return false;
}
inline const std::set<ConfigDescription>& getConfigs() const {
return mConfigs;
}
private:
std::set<ConfigDescription> mConfigs;
};
/**
* Negates the response of the target filter.
*/
class InverseResourceFilter : public ResourceFilter {
public:
InverseResourceFilter(const android::sp<ResourceFilter>& filter)
: mFilter(filter) {}
bool match(const android::ResTable_config& config) const {
return !mFilter->match(config);
}
private:
const android::sp<ResourceFilter> mFilter;
};
/**
* A logical AND of all the added filters.
*/
class AndResourceFilter : public ResourceFilter {
public:
void addFilter(const android::sp<ResourceFilter>& filter) {
mFilters.add(filter);
}
bool match(const android::ResTable_config& config) const {
const size_t N = mFilters.size();
for (size_t i = 0; i < N; i++) {
if (!mFilters[i]->match(config)) {
return false;
}
}
return true;
}
private:
android::Vector<android::sp<ResourceFilter> > mFilters;
};
#endif
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