org.gcube.portlets.user.shareupdates.server

Class TextTransfromUtils

java.lang.Object

org.gcube.portlets.user.shareupdates.server.TextTransfromUtils

public class TextTransfromUtils
extends Object

this class contains utility method for parsing and trasforming users pasted text containing URLs and other utility methods

Author:

Massimiliano Assante, ISTI-CNR

Constructor Summary

Constructors

Constructor and Description
TextTransfromUtils()

Method Summary

Modifier and Type	Method and Description
protected static ArrayList<String>	getImagesWithCleaner(URL pageURL) try with HtmlCleaner API to read the images
protected static String	getImageUrlFromSrcAttribute(URL pageURL, String srcAttr) There are several ways to refer an image in a HTML, this method use an heuristic to get the actual image url
protected static LinkPreview	getInfoFromHTML(URLConnection connection, URL pageUrl, String link, String host) to use when OpenGraph is not available, Tries Metadata first, then Best guess from page content
protected static String	replaceAmpersand(String toReplace)
protected static void	trustAllHTTPSConnections() this method handles the non trusted https connections

Methods inherited from class java.lang.Object

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

Constructor Detail

TextTransfromUtils

public TextTransfromUtils()

Method Detail

getImagesWithCleaner

protected static ArrayList<String> getImagesWithCleaner(URL pageURL)
                                                 throws IOException

try with HtmlCleaner API to read the images

Parameters:

pageURL -

Returns:

the title of the page or null if can't read it

Throws:

IOException

getImageUrlFromSrcAttribute

protected static String getImageUrlFromSrcAttribute(URL pageURL,
                                                    String srcAttr)

There are several ways to refer an image in a HTML, this method use an heuristic to get the actual image url

Parameters:

pageURL - the url

srcAttr - the content of the img src attribute

Returns:

the image url ready to be referred outside native environment

getInfoFromHTML

protected static LinkPreview getInfoFromHTML(URLConnection connection,
                                             URL pageUrl,
                                             String link,
                                             String host)
                                      throws Exception

to use when OpenGraph is not available, Tries Metadata first, then Best guess from page content

Parameters:

pageUrl -

link -

host -

Returns:

a LinPreview object instance filled with the extracted information

Throws:

IOException

Exception

replaceAmpersand

protected static String replaceAmpersand(String toReplace)

trustAllHTTPSConnections

protected static void trustAllHTTPSConnections()

this method handles the non trusted https connections