pxt-calliope/libs/microbit/storage.cpp

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2016-04-16 16:45:04 +02:00
#include "ksbit.h"
/**
* Allows to save and read values in the flash storage
*/
//% weight=10 color=#cc6600
namespace storage {
/**
* Writes the key and buffer pair into flash.
*/
//% blockId="storage_put_buffer" block="storage put buffer %key|with %buffer" weight=50
void putBuffer(StringData* key, Buffer buffer) {
uBit.storage.put(ManagedString(key), ManagedBuffer(buffer).getBytes());
}
/**
* Gets the buffer at the given key if any. If no key is available, empty buffer is returned.
*/
//% blockId="storage_get_buffer" block="storage get buffer %key" weight=49
Buffer getBuffer(StringData* key) {
KeyValuePair* pv = uBit.storage.get(ManagedString(key));
if (pv == NULL) return ManagedBuffer().leakData();
return ManagedBuffer(pv->value, sizeof(pv->value)).leakData();
}
/**
* Removes an entry identified by the key.
*/
//% blockId="storage_remove" block="storage remove %key" weight=20
void remove(StringData * key) {
uBit.storage.remove(ManagedString(key));
}
/**
* The number of entries in the key value store
*/
//% blockId="storage_size" block="storage size" weight=10
int size() {
return uBit.storage.size();
}
}