groovy.util

## Class IndentPrinter

- java.lang.Object
- - groovy.util.IndentPrinter

-     public class IndentPrinter
      extends java.lang.Object

  A helper class for printing indented text. This can be used stand-alone or, more commonly, from Builders.

  By default, a PrintWriter to System.out is used as the Writer, but it is possible to change the Writer by passing a new one as a constructor argument.

  Indention by default is 2 characters but can be changed by passing a different value as a constructor argument.

  The following is an example usage. Note that within a "with" block you need to specify a parameter name so that this.println is not called instead of IndentPrinter.println:

       new IndentPrinter(new PrintWriter(out)).with { p ->
           p.printIndent()
           p.println('parent1')
           p.incrementIndent()
           p.printIndent()
           p.println('child 1')
           p.printIndent()
           p.println('child 2')
           p.decrementIndent()
           p.printIndent()
           p.println('parent2')
           p.flush()
       }

  The above example prints this to standard output:

       parent1
         child 1
         child 2
       parent2

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `IndentPrinter()` Creates an IndentPrinter backed by a PrintWriter pointing to System.out, with an indent of two spaces.
    `IndentPrinter(java.io.Writer out)` Creates an IndentPrinter backed by the supplied Writer, with an indent of two spaces.
    `IndentPrinter(java.io.Writer out, java.lang.String indent)` Creates an IndentPrinter backed by the supplied Writer, with a user-supplied String to be used for indenting.
    `IndentPrinter(java.io.Writer out, java.lang.String indent, boolean addNewlines)` Creates an IndentPrinter backed by the supplied Writer, with a user-supplied String to be used for indenting and the ability to override newline handling.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `decrementIndent()`
    `void` | `flush()`
    `int` | `getIndentLevel()`
    `void` | `incrementIndent()`
    `void` | `print(char c)` Prints a character.
    `void` | `print(java.lang.String text)` Prints a string.
    `void` | `printIndent()` Prints the current indent level.
    `void` | `println()` Prints an end-of-line character (if enabled via addNewLines property).
    `void` | `println(java.lang.String text)` Prints a string followed by an end of line character.
    `void` | `setIndentLevel(int indentLevel)`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### IndentPrinter

          public IndentPrinter()

      Creates an IndentPrinter backed by a PrintWriter pointing to System.out, with an indent of two spaces.
      See Also:
        `IndentPrinter(Writer, String)`

    - #### IndentPrinter

          public IndentPrinter(java.io.Writer out)

      Creates an IndentPrinter backed by the supplied Writer, with an indent of two spaces.
      Parameters:
        `out` - Writer to output to
      See Also:
        `IndentPrinter(Writer, String)`

    - #### IndentPrinter

          public IndentPrinter(java.io.Writer out,
                       java.lang.String indent)

      Creates an IndentPrinter backed by the supplied Writer, with a user-supplied String to be used for indenting.
      Parameters:
        `out` - Writer to output to
        `indent` - character(s) used to indent each line

    - #### IndentPrinter

          public IndentPrinter(java.io.Writer out,
                       java.lang.String indent,
                       boolean addNewlines)

      Creates an IndentPrinter backed by the supplied Writer, with a user-supplied String to be used for indenting and the ability to override newline handling.
      Parameters:
        `out` - Writer to output to
        `indent` - character(s) used to indent each line
        `addNewlines` - set to false to gobble all new lines (default true)

  - ### Method Detail

    - #### println

          public void println(java.lang.String text)

      Prints a string followed by an end of line character.
      Parameters:
        `text` - String to be written

    - #### print

          public void print(java.lang.String text)

      Prints a string.
      Parameters:
        `text` - String to be written

    - #### print

          public void print(char c)

      Prints a character.
      Parameters:
        `c` - char to be written

    - #### printIndent

          public void printIndent()

      Prints the current indent level.

    - #### println

          public void println()

      Prints an end-of-line character (if enabled via addNewLines property). Defaults to outputting a single '\n' character but by using a custom Writer, e.g. PlatformLineWriter, you can get platform-specific end-of-line characters.
      See Also:
        `IndentPrinter(Writer, String, boolean)`

    - #### incrementIndent

          public void incrementIndent()

    - #### decrementIndent

          public void decrementIndent()

    - #### getIndentLevel

          public int getIndentLevel()

    - #### setIndentLevel

          public void setIndentLevel(int indentLevel)

    - #### flush

          public void flush()