Package com.helger.css.utils

Class CSSDataURLHelper

java.lang.Object

com.helger.css.utils.CSSDataURLHelper

@Immutable
public final class CSSDataURLHelper
extends Object

Provides data URL handling sanity methods (RFC 2397).

Author:

Philip Helger

Field Summary

Fields

Modifier and Type	Field	Description
static String	BASE64_MARKER	The marker for Base64 encoding
static Charset	DEFAULT_CHARSET	The default charset to be used for Data URLs: US-ASCII
static com.helger.commons.mime.IMimeType	DEFAULT_MIME_TYPE	The default MIME type for Data URLs: text/plain;charset=US-ASCII
static com.helger.commons.mime.EMimeQuoting	MIME_QUOTING	Data URLs should use the URL code to quote values!
static String	PREFIX_DATA_URL	The default prefix for data URLs
static char	SEPARATOR_CONTENT	The separator that starts the content

Method Summary

Modifier and Type	Method	Description
static boolean	isDataURL(String sURL)	Check if the passed URL is a data URL.
static CSSDataURL	parseDataURL(String sDataURL)	Parse a data URL into this type.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CHARSET

public static final Charset DEFAULT_CHARSET

The default charset to be used for Data URLs: US-ASCII

DEFAULT_MIME_TYPE

public static final com.helger.commons.mime.IMimeType DEFAULT_MIME_TYPE

The default MIME type for Data URLs: text/plain;charset=US-ASCII

PREFIX_DATA_URL

public static final String PREFIX_DATA_URL

The default prefix for data URLs

See Also:

Constant Field Values

BASE64_MARKER

public static final String BASE64_MARKER

The marker for Base64 encoding

See Also:

Constant Field Values

SEPARATOR_CONTENT

public static final char SEPARATOR_CONTENT

The separator that starts the content

See Also:

Constant Field Values

MIME_QUOTING

public static final com.helger.commons.mime.EMimeQuoting MIME_QUOTING

Data URLs should use the URL code to quote values!

Method Detail

isDataURL

public static boolean isDataURL(@Nullable
                                String sURL)

Check if the passed URL is a data URL. It is checked, whether the passed URL starts with "data:" (after trimming, case insensitive).

Parameters:

sURL - The URL to check. May be null.

Returns:

true if the passed URL is a data URL, false if not.

parseDataURL

@Nullable
public static CSSDataURL parseDataURL(@Nullable
                                      String sDataURL)

Parse a data URL into this type.

 Syntax
   dataurl    := "data:" [ mediatype ] [ ";base64" ] "," data
   mediatype  := [ type "/" subtype ] *( ";" parameter )
   data       := *urlchar
   parameter  := attribute "=" value
 

Parameters:

sDataURL - The data URL to be parsed. May be null.

Returns:

null if parsing failed