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1   /**
2    * Portions of this software was developed by employees of the National Institute
3    * of Standards and Technology (NIST), an agency of the Federal Government and is
4    * being made available as a public service. Pursuant to title 17 United States
5    * Code Section 105, works of NIST employees are not subject to copyright
6    * protection in the United States. This software may be subject to foreign
7    * copyright. Permission in the United States and in foreign countries, to the
8    * extent that NIST may hold copyright, to use, copy, modify, create derivative
9    * works, and distribute this software and its documentation without fee is hereby
10   * granted on a non-exclusive basis, provided that this notice and disclaimer
11   * of warranty appears in all copies.
12   *
13   * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
14   * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
15   * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
16   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
17   * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
18   * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
19   * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
20   * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
21   * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
22   * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
23   * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
24   * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
25   */
26  
27  package gov.nist.secauto.swid.builder.output;
28  
29  import com.fasterxml.jackson.core.JsonGenerator;
30  
31  import java.io.IOException;
32  import java.math.BigInteger;
33  import java.time.ZonedDateTime;
34  import java.time.format.DateTimeFormatter;
35  import java.util.regex.Pattern;
36  
37  public class JsonSupport {
38  
39    private static final Pattern INTEGER_PATTERN = Pattern.compile("[-]?[1-9]\\d*");
40  
41    protected void writeField(JsonGenerator generator, long fieldId) throws IOException {
42      generator.writeFieldId(fieldId);
43    }
44  
45    protected void writeField(JsonGenerator generator, long fieldId, JsonWritable value) throws IOException {
46      writeField(generator, fieldId);
47      value.write(generator);
48  
49    }
50  
51    protected void writeTextField(JsonGenerator generator, long fieldId, String text) throws IOException {
52      writeField(generator, fieldId);
53      generator.writeString(text);
54    }
55  
56    protected void writeBooleanField(JsonGenerator generator, long fieldId, boolean state) throws IOException {
57      writeField(generator, fieldId);
58      generator.writeBoolean(state);
59  
60    }
61  
62    protected void writeLongField(JsonGenerator generator, long fieldId, long value) throws IOException {
63      writeField(generator, fieldId);
64      generator.writeNumber(value);
65    }
66  
67    protected void writeIntegerField(JsonGenerator generator, long fieldId, int value) throws IOException {
68      writeField(generator, fieldId);
69      generator.writeNumber(value);
70    }
71  
72    protected void writeIntegerField(JsonGenerator generator, long fieldId, BigInteger value) throws IOException {
73      writeField(generator, fieldId);
74      generator.writeNumber(value);
75    }
76  
77    protected void writeDateTimeField(JsonGenerator generator, long fieldId, ZonedDateTime dateTime) throws IOException {
78      writeField(generator, fieldId);
79      generator.writeString(dateTime.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME));
80    }
81  
82    protected void writeIntegerOrTextField(JsonGenerator generator, long fieldId, String value) throws IOException {
83      if (INTEGER_PATTERN.matcher(value).matches()) {
84        BigInteger intValue = new BigInteger(value);
85        writeIntegerField(generator, fieldId, intValue);
86      } else {
87        writeTextField(generator, fieldId, value);
88      }
89    }
90  
91    protected void writeBinaryField(JsonGenerator generator, long fieldId, byte[] value) throws IOException {
92      writeField(generator, fieldId);
93      generator.writeBinary(value);
94    }
95  }