org.apache.tools.ant.util
Class SourceFileScanner

java.lang.Object
  |
  +--org.apache.tools.ant.util.SourceFileScanner

All Implemented Interfaces:

ResourceFactory

public class SourceFileScanner

extends java.lang.Object

implements ResourceFactory

Utility class that collects the functionality of the various scanDir methods that have been scattered in several tasks before.

The only method returns an array of source files. The array is a subset of the files given as a parameter and holds only those that are newer than their corresponding target files.

Author:

Stefan Bodewig, Antoine Levy-Lambert

Field Summary

protected Task

task

Constructor Summary

SourceFileScanner(Task task)

Method Summary

Resource	getResource(java.lang.String name) returns resource information for a file at destination
java.lang.String[]	restrict(java.lang.String[] files, java.io.File srcDir, java.io.File destDir, FileNameMapper mapper) Restrict the given set of files to those that are newer than their corresponding target files.
java.io.File[]	restrictAsFiles(java.lang.String[] files, java.io.File srcDir, java.io.File destDir, FileNameMapper mapper) Convinience layer on top of restrict that returns the source files as File objects (containing absolute paths if srcDir is absolute).

Methods inherited from class java.lang.Object

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

Field Detail

task

protected Task task

Constructor Detail

SourceFileScanner

public SourceFileScanner(Task task)

Parameters:

task - The task we should log messages through

Method Detail

restrict

public java.lang.String[] restrict(java.lang.String[] files,
                                   java.io.File srcDir,
                                   java.io.File destDir,
                                   FileNameMapper mapper)

Restrict the given set of files to those that are newer than their corresponding target files.

Parameters:

files - the original set of files

srcDir - all files are relative to this directory

destDir - target files live here. if null file names returned by the mapper are assumed to be absolute.

mapper - knows how to construct a target file names from source file names.

restrictAsFiles

public java.io.File[] restrictAsFiles(java.lang.String[] files,
                                      java.io.File srcDir,
                                      java.io.File destDir,
                                      FileNameMapper mapper)

Convinience layer on top of restrict that returns the source files as File objects (containing absolute paths if srcDir is absolute).

getResource

public Resource getResource(java.lang.String name)

returns resource information for a file at destination

Specified by:

getResource in interface ResourceFactory

Parameters:

name - relative path of file at destination

Returns:

data concerning a file whose relative path to destDir is name

Since:

Ant 1.5.2