nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/JsonWriter.java

   1 package org.asamk.signal;
   2
   3 import com.fasterxml.jackson.annotation.JsonAutoDetect;
   4 import com.fasterxml.jackson.annotation.PropertyAccessor;
   5 import com.fasterxml.jackson.core.JsonGenerator;
   6 import com.fasterxml.jackson.core.JsonProcessingException;
   7 import com.fasterxml.jackson.databind.ObjectMapper;
   8
   9 import java.io.BufferedWriter;
  10 import java.io.IOException;
  11 import java.io.OutputStream;
  12 import java.io.OutputStreamWriter;
  13 import java.io.Writer;
  14 import java.nio.charset.StandardCharsets;
  15
  16 public class JsonWriter {
  17
  18     private final Writer writer;
  19     private final ObjectMapper objectMapper;
  20
  21     public JsonWriter(final OutputStream outputStream) {
  22         this.writer = new BufferedWriter(new OutputStreamWriter(outputStream, StandardCharsets.UTF_8));
  23
  24         objectMapper = new ObjectMapper();
  25         objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.PUBLIC_ONLY);
  26         objectMapper.disable(JsonGenerator.Feature.AUTO_CLOSE_TARGET);
  27     }
  28
  29     public void write(final Object object) {
  30         try {
  31             try {
  32                 objectMapper.writeValue(writer, object);
  33             } catch (JsonProcessingException e) {
  34                 // Some issue with json serialization, probably caused by a bug
  35                 throw new AssertionError(e);
  36             }
  37             writer.write(System.lineSeparator());
  38             writer.flush();
  39         } catch (IOException e) {
  40             throw new AssertionError(e);
  41         }
  42     }
  43 }