Groovy Documentation

## org.vertx.groovy.core.parsetools
[Groovy] Class RecordParser

    java.lang.Object
      org.vertx.groovy.core.parsetools.RecordParser

    class RecordParser

A helper class which allows you to easily parse protocols which are delimited by a sequence of bytes, or fixed size records.

Instances of this class take as input Buffer instances containing raw bytes, and output records.

For example, if I had a simple ASCII text protocol delimited by '\n' and the input was the following:

     buffer1:HELLO\nHOW ARE Y
     buffer2:OU?\nI AM
     buffer3: DOING OK
     buffer4:\n

Then the output would be:

     buffer1:HELLO
     buffer2:HOW ARE YOU?
     buffer3:I AM DOING OK

Instances of this class can be changed between delimited mode and fixed size record mode on the fly as individual records are read, this allows you to parse protocols where, for example, the first 5 records might all be fixed size (of potentially different sizes), followed by some delimited records, followed by more fixed size records.

Instances of this class can't currently be used for protocols where the text is encoded with something other than a 1-1 byte-char mapping. TODO extend this class to cope with arbitrary character encodings

Authors:
  Tim Fox

Method Summary
`void` | `delimitedMode(java.lang.String delim)` Flip the parser into delimited mode, and where the delimiter can be represented by the String `delim` endcoded in latin-1 .
`void` | `delimitedMode(byte[] delim)` Flip the parser into delimited mode, and where the delimiter can be represented by the delimiter `delim`.
`void` | `fixedSizeMode(int size)` Flip the parser into fixed size mode, where the record size is specified by `size` in bytes.
`void` | `handle(Buffer data)`
`static byte[]` | `latin1StringToBytes(java.lang.String str)` Helper method to convert a latin-1 String to an array of bytes for use as a delimiter Please do not use this for non latin-1 characters
`static RecordParser` | `newDelimited(java.lang.String delim, groovy.lang.Closure output)` Create a new `RecordParser` instance, initially in delimited mode, and where the delimiter can be represented by the String {@code} delim endcoded in latin-1 .
`static RecordParser` | `newDelimited(byte[] delim, groovy.lang.Closure output)` Create a new `RecordParser` instance, initially in delimited mode, and where the delimiter can be represented by the `byte[]` delim.
`static RecordParser` | `newFixed(int size, groovy.lang.Closure output)` Create a new `RecordParser` instance, initially in fixed size mode, and where the record size is specified by the `size` parameter.
`void` | `setOutput(groovy.lang.Closure output)`
`groovy.lang.Closure` | `toClosure()` Convert to a closure so it can be plugged into data handlers

Methods inherited from class java.lang.Object
java.lang.Object#wait(long, int), java.lang.Object#wait(long), java.lang.Object#wait(), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll()

Method Detail

### delimitedMode

    void delimitedMode(java.lang.String delim)

  Flip the parser into delimited mode, and where the delimiter can be represented by the String `delim` endcoded in latin-1 . Don't use this if your String contains other than latin-1 characters.

  This method can be called multiple times with different values of delim while data is being parsed.

### delimitedMode

    void delimitedMode(byte[] delim)

  Flip the parser into delimited mode, and where the delimiter can be represented by the delimiter `delim`.

  This method can be called multiple times with different values of delim while data is being parsed.

### fixedSizeMode

    void fixedSizeMode(int size)

  Flip the parser into fixed size mode, where the record size is specified by `size` in bytes.

  This method can be called multiple times with different values of size while data is being parsed.

### handle

    void handle(Buffer data)

### latin1StringToBytes

    static byte[] latin1StringToBytes(java.lang.String str)

  Helper method to convert a latin-1 String to an array of bytes for use as a delimiter Please do not use this for non latin-1 characters
  Parameters:
    str
  Returns:
    The byte[] form of the string

### newDelimited

    static RecordParser newDelimited(java.lang.String delim, groovy.lang.Closure output)

  Create a new `RecordParser` instance, initially in delimited mode, and where the delimiter can be represented by the String {@code} delim endcoded in latin-1 . Don't use this if your String contains other than latin-1 characters.

  `output` Will receive whole records which have been parsed.

### newDelimited

    static RecordParser newDelimited(byte[] delim, groovy.lang.Closure output)

  Create a new `RecordParser` instance, initially in delimited mode, and where the delimiter can be represented by the `byte[]` delim.

  `output` Will receive whole records which have been parsed.

### newFixed

    static RecordParser newFixed(int size, groovy.lang.Closure output)

  Create a new `RecordParser` instance, initially in fixed size mode, and where the record size is specified by the `size` parameter.

  `output` Will receive whole records which have been parsed.

### setOutput

    void setOutput(groovy.lang.Closure output)

### toClosure

    groovy.lang.Closure toClosure()

  Convert to a closure so it can be plugged into data handlers
  Returns:
    a Closure

Groovy Documentation