Package com.fasterxml.jackson.core.io

Class JsonStringEncoder

java.lang.Object
com.fasterxml.jackson.core.io.JsonStringEncoder
public final class JsonStringEncoder extends Object
Helper class used for efficient encoding of JSON String values (including JSON field names) into Strings or UTF-8 byte arrays.

Note that methods in here are somewhat optimized, but not ridiculously so. Reason is that conversion method results are expected to be cached so that these methods will not be hot spots during normal operation.

  • Field Details

  • Constructor Details

    • JsonStringEncoder

      public JsonStringEncoder()

  • Method Details

    • getInstance

      public static JsonStringEncoder getInstance()
      Factory method for getting an instance; this is either recycled per-thread instance, or a newly constructed one.
      Returns:
      Static stateless encoder instance

    • quoteAsString

      public char[] quoteAsString(String input)
      Method that will escape text contents using JSON standard escaping, and return results as a character array.
      Parameters:
      input - Value String to process
      Returns:
      JSON-escaped String matching input

    • quoteAsString

      public char[] quoteAsString(CharSequence input)
      Overloaded variant of quoteAsString(String).
      Parameters:
      input - Value CharSequence to process
      Returns:
      JSON-escaped String matching input
      Since:
      2.10

    • quoteAsString

      public void quoteAsString(CharSequence input, StringBuilder output)
      Method that will quote text contents using JSON standard quoting, and append results to a supplied StringBuilder. Use this variant if you have e.g. a StringBuilder and want to avoid superfluous copying of it.
      Parameters:
      input - Value CharSequence to process
      output - StringBuilder to append escaped contents to
      Since:
      2.8

    • quoteAsUTF8

      public byte[] quoteAsUTF8(String text)
      Method that will escape text contents using JSON standard escaping, encode resulting String as UTF-8 bytes and return results as a byte array.
      Parameters:
      text - Value String to process
      Returns:
      UTF-8 encoded bytes of JSON-escaped text

    • encodeAsUTF8

      public byte[] encodeAsUTF8(String text)
      Will encode given String as UTF-8 (without any escaping) and return the resulting byte array.
      Parameters:
      text - Value String to process
      Returns:
      UTF-8 encoded bytes of text (without any escaping)

    • encodeAsUTF8

      public byte[] encodeAsUTF8(CharSequence text)
      Overloaded variant of encodeAsUTF8(String).
      Parameters:
      text - Value CharSequence to process
      Returns:
      UTF-8 encoded bytes of text (without any escaping)
      Since:
      2.11

    • _qbuf

      private char[] _qbuf()

    • _appendNumeric

      private int _appendNumeric(int value, char[] qbuf)

    • _appendNamed

      private int _appendNamed(int esc, char[] qbuf)

    • _appendByte

      private int _appendByte(int ch, int esc, ByteArrayBuilder bb, int ptr)

    • _convert

      private static int _convert(int p1, int p2)

    • _illegal

      private static void _illegal(int c)

    • _initialCharBufSize

      static int _initialCharBufSize(int strLen)

    • _initialByteBufSize

      static int _initialByteBufSize(int strLen)