org.geotools.util

Class URLs

Object

URLs

public class URLs
extends Object

Utilities for manipulating and converting to and from URLs.

urlToFile(URL) and fileToUrl(File) and getParentUrl(URL) are used to work with files across platforms

Constructor Summary

Constructors

Constructor and Description
URLs()

Method Summary

Modifier and Type	Method and Description
static URL	changeUrlExt(URL url, String postfix) Changes the ending (e.g. ".sld") of a URL
static URL	extendUrl(URL base, String extension) Extends a URL.
static URL	fileToUrl(File file) A replacement for File.toURL() and File.toURI().toURL().
static URL	getParentUrl(URL url) The function is supposed to be equivalent to File.getParent().
static File	urlToFile(URL url) Takes a URL and converts it to a File.

Methods inherited from class Object

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

Constructor Detail

URLs

public URLs()

Method Detail

changeUrlExt

public static URL changeUrlExt(URL url,
                               String postfix)
                        throws IllegalArgumentException

Changes the ending (e.g. ".sld") of a URL

Parameters:

url - URL like file:/sds/a.bmp or http://www.some.org/foo/bar.shp

postfix - New file extension for the URL without .

Returns:

A new URL with new extension.

Throws:

{@link - MalformedURLException} if the new URL can not be created.

IllegalArgumentException

extendUrl

public static URL extendUrl(URL base,
                            String extension)
                     throws MalformedURLException

Extends a URL.

Parameters:

base - Has to be a URL pointing to a directory. If it doesn't end with a / it will be added automatically.

extension - The part that will be added to the URL

Throws:

MalformedURLException - if the new URL can not be created.

fileToUrl

public static URL fileToUrl(File file)

A replacement for File.toURL() and File.toURI().toURL().

File.toURL() does not percent-encode characters and File.toURI().toURL() does not percent-encode non-ASCII characters. This method ensures that URL characters are correctly percent-encoded, and works around the reported misbehaviour of some Java implementations on Mac.

Parameters:

file -

Returns:

URL

getParentUrl

public static URL getParentUrl(URL url)
                        throws MalformedURLException

The function is supposed to be equivalent to File.getParent(). The URL is converted to a String, truncated to the last / and then recreated as a new URL.

Throws:

{@link - MalformedURLException} if the parent URL can not be created.

MalformedURLException

urlToFile

public static File urlToFile(URL url)

Takes a URL and converts it to a File. The attempts to deal with Windows UNC format specific problems, specifically files located on network shares and different drives.

If the URL.getAuthority() returns null or is empty, then only the url's path property is used to construct the file. Otherwise, the authority is prefixed before the path.

It is assumed that url.getProtocol returns "file".

Authority is the drive or network share the file is located on. Such as "C:", "E:", "\\fooServer"

Parameters:

url - a URL object that uses protocol "file"

Returns:

a File that corresponds to the URL's location