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
`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()