ReaderSource (Groovy 3.0.13)

All Superinterfaces:: HasCleanup

All Known Implementing Classes:: AbstractReaderSource, FileReaderSource, InputStreamReaderSource, StringReaderSource, URLReaderSource

public interface ReaderSource
extends HasCleanup

An interface for things that can supply (and potentially resupply) a Reader on a source stream.

Method Summary

Modifier and Type	Method	Description
`boolean`	`canReopenSource()`	Returns true if the source can be restarted (ie.
`void`	`cleanup()`	Cleans up any cached resources used by getLine().
`String`	`getLine(int lineNumber, Janitor janitor)`	Returns a line from the source, or null, if unavailable.
`Reader`	`getReader()`	Returns a new Reader on the underlying source object.
`URI`	`getURI()`	Returns a URI for this source.

Method Details
- getReader
  
  Reader getReader() throws IOException
  
  Returns a new Reader on the underlying source object. Returns null if the source can't be reopened.
  
  Returns:
  
  the reader to the resource
  
  Throws:
  
  IOException - if there was an error opening for stream
- canReopenSource
  
  boolean canReopenSource()
  
  Returns true if the source can be restarted (ie. if getReader() will return non-null on subsequent calls.
  
  Returns:
  
  true if the resource can be reopened for reading
- getLine
  
  String getLine(int lineNumber, Janitor janitor)
  
  Returns a line from the source, or null, if unavailable. If you supply a Janitor, resources will be cached.
  
  Parameters:
  
  lineNumber - the number of the line of interest
  
  janitor - helper to clean up afterwards
  
  Returns:
  
  the line of interest
- cleanup
  
  void cleanup()
  
  Cleans up any cached resources used by getLine().
  
  Specified by:
  
  cleanup in interface HasCleanup
- getURI
  
  URI getURI()
  
  Returns a URI for this source.
  
  Since:
  
  2.3.0