ReaderSource (Groovy 2.5.18)

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

All Methods Instance Methods Abstract Methods
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 Detail
  - 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