org.apache.tools.ant.util

Class SourceFileScanner

java.lang.Object

org.apache.tools.ant.util.SourceFileScanner

All Implemented Interfaces:

ResourceFactory

public class SourceFileScanner
extends 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.

Field Summary

Fields

Modifier and Type	Field and Description
protected Task	task

Constructor Summary

Constructors

Constructor and Description
SourceFileScanner(Task task) Construct a new SourceFileScanner.

Method Summary

Modifier and Type	Method and Description
Resource	getResource(String name) Returns resource information for a file at destination.
String[]	restrict(String[] files, File srcDir, File destDir, FileNameMapper mapper) Restrict the given set of files to those that are newer than their corresponding target files.
String[]	restrict(String[] files, File srcDir, File destDir, FileNameMapper mapper, long granularity) Restrict the given set of files to those that are newer than their corresponding target files.
File[]	restrictAsFiles(String[] files, File srcDir, File destDir, FileNameMapper mapper) Convenience layer on top of restrict that returns the source files as File objects (containing absolute paths if srcDir is absolute).
File[]	restrictAsFiles(String[] files, File srcDir, File destDir, FileNameMapper mapper, long granularity) Convenience 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, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

task

protected Task task

Constructor Detail

SourceFileScanner

public SourceFileScanner(Task task)

Construct a new SourceFileScanner.

Parameters:

task - The task we should log messages through.

Method Detail

getResource

public Resource getResource(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

restrict

public String[] restrict(String[] files,
                         File srcDir,
                         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.

Returns:

an array of filenames.

restrict

public String[] restrict(String[] files,
                         File srcDir,
                         File destDir,
                         FileNameMapper mapper,
                         long granularity)

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.

granularity - The number of milliseconds leeway to give before deciding a target is out of date.

Returns:

an array of filenames.

Since:

Ant 1.6.2

restrictAsFiles

public File[] restrictAsFiles(String[] files,
                              File srcDir,
                              File destDir,
                              FileNameMapper mapper)

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

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.

Returns:

an array of files.

restrictAsFiles

public File[] restrictAsFiles(String[] files,
                              File srcDir,
                              File destDir,
                              FileNameMapper mapper,
                              long granularity)

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

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.

granularity - The number of milliseconds leeway to give before deciding a target is out of date.

Returns:

an array of files.

Since:

Ant 1.6.2