Class WhitespaceStripper

java.lang.Object

com.openhtmltopdf.layout.WhitespaceStripper

public class WhitespaceStripper
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EOL
static final char	EOLC
static final Pattern	linefeed_space_collapse
static final Pattern	linefeed_to_space
static final String	SPACE
static final Pattern	space_before_linefeed_collapse
static final Pattern	space_collapse
static final Pattern	tab_to_space

Constructor Summary

Constructors

Constructor	Description
WhitespaceStripper()

Method Summary

Modifier and Type	Method	Description
private static boolean	canCollapseThrough(Styleable styleable)
private static String	collapseWhitespace(InlineBox iB, IdentValue whitespace, String text, boolean collapseLeading)
private static String	collapseWhitespaceNormalOrNoWrap(String text, boolean collapseLeading)	Collapse whitespace for normal or no-wrap modes.
static void	stripInlineContent(List<Styleable> inlineContent)	Strips whitespace early in inline content generation.
private static void	stripTextContent(List<Styleable> stripped)
private static boolean	stripWhitespace(InlineBox iB, boolean collapseLeading)	this function strips all whitespace from the text according to the CSS 2.1 spec on whitespace handling.

Methods inherited from class Object

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

Field Details

SPACE

public static final String SPACE

See Also:

• Constant Field Values

EOL

public static final String EOL

See Also:

• Constant Field Values

EOLC

public static final char EOLC

See Also:

• Constant Field Values

linefeed_space_collapse

public static final Pattern linefeed_space_collapse

linefeed_to_space

public static final Pattern linefeed_to_space

tab_to_space

public static final Pattern tab_to_space

space_collapse

public static final Pattern space_collapse

space_before_linefeed_collapse

public static final Pattern space_before_linefeed_collapse

Constructor Details

WhitespaceStripper

public WhitespaceStripper()

Method Details

stripInlineContent

public static void stripInlineContent(List<Styleable> inlineContent)

Strips whitespace early in inline content generation. This can be done because "whitespage" does not ally to :first-line and :first-letter. For dynamic pseudo-classes we are allowed to choose which properties apply. NOTE: The inlineContent parameter may be modified

Parameters:

inlineContent - the inline content to strip the whitespaces on

canCollapseThrough

private static boolean canCollapseThrough(Styleable styleable)

stripTextContent

private static void stripTextContent(List<Styleable> stripped)

stripWhitespace

private static boolean stripWhitespace(InlineBox iB,
 boolean collapseLeading)

this function strips all whitespace from the text according to the CSS 2.1 spec on whitespace handling. It accounts for the different whitespace settings like normal, nowrap, pre, etc

Parameters:

collapseLeading -

style -

tc - the TextContent to strip. The text in it is modified.

Returns:

whether the next leading space should collapse or not.

collapseWhitespaceNormalOrNoWrap

private static String collapseWhitespaceNormalOrNoWrap(String text,
 boolean collapseLeading)

Collapse whitespace for normal or no-wrap modes. Much faster (15x in simple testing) than using multiple regular expressions. NOTE: Slightly different behavior to using regular expressions as definition of space characters differ, but I believe this is the correct definition according to CSS specifications.

Parameters:

text -

collapseLeading -

Returns:

collapseWhitespace

private static String collapseWhitespace(InlineBox iB,
 IdentValue whitespace,
 String text,
 boolean collapseLeading)