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

   1 package org.asamk.signal.output;
   2
   3 import org.slf4j.helpers.MessageFormatter;
   4
   5 import java.io.IOException;
   6 import java.io.Writer;
   7
   8 public final class PlainTextWriterImpl implements PlainTextWriter {
   9
  10     private final Writer writer;
  11
  12     private PlainTextWriter indentedWriter;
  13
  14     public PlainTextWriterImpl(final Writer writer) {
  15         this.writer = writer;
  16     }
  17
  18     @Override
  19     public void println(String format, Object... args) {
  20         final var message = MessageFormatter.arrayFormat(format, args).getMessage();
  21
  22         try {
  23             writer.write(message);
  24             writer.write(System.lineSeparator());
  25             writer.flush();
  26         } catch (IOException e) {
  27             throw new AssertionError(e);
  28         }
  29     }
  30
  31     @Override
  32     public PlainTextWriter indentedWriter() {
  33         if (indentedWriter == null) {
  34             indentedWriter = new IndentedPlainTextWriter(this, writer);
  35         }
  36         return indentedWriter;
  37     }
  38
  39     private static final class IndentedPlainTextWriter implements PlainTextWriter {
  40
  41         private static final int INDENTATION = 2;
  42
  43         private final String spaces = " ".repeat(INDENTATION);
  44         private final PlainTextWriter plainTextWriter;
  45         private final Writer writer;
  46
  47         private PlainTextWriter indentedWriter;
  48
  49         private IndentedPlainTextWriter(final PlainTextWriter plainTextWriter, final Writer writer) {
  50             this.plainTextWriter = plainTextWriter;
  51             this.writer = writer;
  52         }
  53
  54         @Override
  55         public void println(final String format, final Object... args) {
  56             try {
  57                 writer.write(spaces);
  58             } catch (IOException e) {
  59                 throw new AssertionError(e);
  60             }
  61             plainTextWriter.println(format, args);
  62         }
  63
  64         @Override
  65         public PlainTextWriter indentedWriter() {
  66             if (indentedWriter == null) {
  67                 indentedWriter = new IndentedPlainTextWriter(this, writer);
  68             }
  69             return indentedWriter;
  70         }
  71     }
  72 }