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#357 implemented PlutusDataToUFT8Json converter #358

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#357 implemented PlutusDataToUFT8Json converter #358

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98 changes: 97 additions & 1 deletion ...ain/java/com/bloxbean/cardano/client/plutus/spec/serializers/PlutusDataJsonConverter.java
View file
Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
package com.bloxbean.cardano.client.plutus.spec.serializers;

import co.nstant.in.cbor.model.*;
import com.bloxbean.cardano.client.exception.CborSerializationException;
import com.bloxbean.cardano.client.plutus.spec.*;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
@@ -8,6 +10,10 @@
import com.fasterxml.jackson.databind.node.ObjectNode;
import lombok.NonNull;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import static com.bloxbean.cardano.client.plutus.spec.serializers.PlutusDataJsonKeys.*;

/**
@@ -63,4 +69,94 @@ else if (jsonNode.has(LIST)) {
public static String toJson(PlutusData plutusData) throws JsonProcessingException {
return mapper.writeValueAsString(plutusData);
}
}

/**
* Convert {@link PlutusData} to utf8 encoded json String
* @param plutusData data to be encoded
* @return utf8 encoded json
* @throws JsonProcessingException
* @throws CborSerializationException
*/
public static String toUTF8Json(PlutusData plutusData) throws JsonProcessingException, CborSerializationException {
DataItem serializedPlutusData = plutusData.serialize();
Object o = parseItem(serializedPlutusData);
return mapper.writeValueAsString(o);
}

/**
* parsing a {@link DataItem} to utf8 object regarding it's type
* @param item cbor {@link DataItem}
* @return utf8 encoded representation
*/
private static Object parseItem(DataItem item) {
Object value = "";
switch (item.getMajorType()) {
case BYTE_STRING:
value = bytestringItemToString((ByteString) item);
break;
case ARRAY:
value = dataItemArrayToString((Array) item);
break;
case MAP:
value = parseDataItemMap((Map) item);
break;
case UNSIGNED_INTEGER:
value = ((UnsignedInteger)item).getValue();
break;
case NEGATIVE_INTEGER:
value = ((NegativeInteger)item).getValue();
break;
case UNICODE_STRING:
value = ((UnicodeString)item).getString();
break;
case TAG:
value = ((Tag) item).getValue();
break;
default:
throw new UnsupportedOperationException("Unkown type. Not implemented"); // TODO need to implement the other types
}
return value;
}

/**
* {@link ByteString} item parsing to utf8 string
* @param item
* @return
*/
private static String bytestringItemToString(ByteString item) {
String value = "";
byte[] bytes = item.getBytes();
value = new String(bytes);
return value;
}

/**
* {@link Array} item parsing to utf8 representation
* @param array
* @return
*/
private static Object dataItemArrayToString(Array array) {
List<Object> decodedItemList = new ArrayList<>();
for (DataItem dataItem : array.getDataItems()) {
if(!dataItem.getMajorType().equals(MajorType.SPECIAL)){
decodedItemList.add(parseItem(dataItem));
}
}
return decodedItemList.stream().toArray(Object[]::new);
}

/**
* {@link Map} item parsing to utf8 representation
* @param m
* @return
*/
private static HashMap<String, Object> parseDataItemMap(Map m) {
HashMap<String, Object> decodedMap = new HashMap<>();
for (DataItem keyItem : m.getKeys()) {
String keyString = (String) parseItem(keyItem);
Object valueString = parseItem(m.get(keyItem));
decodedMap.put(keyString, valueString);
}
return decodedMap;
}
}
11 changes: 11 additions & 0 deletions ...java/com/bloxbean/cardano/client/plutus/spec/serializers/PlutusDataJsonConverterTest.java
View file
Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
package com.bloxbean.cardano.client.plutus.spec.serializers;

import co.nstant.in.cbor.model.ByteString;
import com.bloxbean.cardano.client.plutus.spec.PlutusData;
import com.bloxbean.cardano.client.util.HexUtil;
import org.junit.jupiter.api.Test;
@@ -60,4 +61,14 @@ void serDeser_largePlutusData() throws Exception {
assertThat(plutusData).isNotNull();
assertThat(json).isNotNull();
}

@Test
void utf8_ByteStringdeserializationTest() throws Exception {
String datumHex = "d8799fa6446e616d654c54657374313233546f6b656e45696d6167655835697066733a2f2f516d5763636a566279694d6a394637775278725053743554387953687974714331646f5132585072457838485379496d65646961747970654a696d6167652f6a706567496d65646961547970654a696d6167652f6a7065674b6465736372697074696f6e404566696c65739fa3496d65646961747970654a696d6167652f6a706567446e616d654a696d6167652f6a706567437372635835697066733a2f2f516d5763636a566279694d6a394637775278725053743554387953687974714331646f5132585072457838485379ff01ff";
PlutusData plutusData = PlutusData.deserialize(HexUtil.decodeHexString(datumHex));

String json = PlutusDataJsonConverter.toUTF8Json(plutusData);
assertThat(plutusData).isNotNull();
assertThat(json).isNotNull();
}
}