com.openhtmltopdf.util

Class OpenUtil

java.lang.Object

com.openhtmltopdf.util.OpenUtil

public class OpenUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	OpenUtil.ThrowableConsumer<T>
static interface	OpenUtil.ThrowableFunction<T,R>

Method Summary

Modifier and Type	Method and Description
static boolean	areAllCharactersPrintable(String str) Returns true, when all characters of the given string are printable.
static void	closeQuietly(Closeable resource)
static int	firstNonZero(int... values) First non-zero value or zero if none.
static boolean	isCodePointPrintable(int codePoint) Checks if a code point is printable.
static boolean	isSafeFontCodePointToPrint(int codePoint) Whether the code point should be passed through to the font for rendering.
static Integer	parseIntegerOrNull(String possibleInteger)
static byte[]	readAll(InputStream is)
static String	readAll(Reader reader)
static String	readString(Class<?> clazz, String resource) Reads a resource to a string using UTF-8.
static String	readString(InputStream is) Reads a stream to a string using UTF-8 encoding.
static <T> Consumer<T>	rethrowingConsumer(OpenUtil.ThrowableConsumer<T> consumer) Same as rethrowingFunction(ThrowableFunction) for consumers.
static <T,R> Function<T,R>	rethrowingFunction(OpenUtil.ThrowableFunction<T,R> func) Given a OpenUtil.ThrowableFunction (which can throw checked exceptions) returns a standard Function (which can't throw checked exceptions).
static void	tryQuietly(Runnable r)

Methods inherited from class java.lang.Object

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

Method Detail

isCodePointPrintable

public static boolean isCodePointPrintable(int codePoint)

Checks if a code point is printable. If false, it can be safely discarded at the rendering stage, else it should be replaced with the replacement character, if a suitable glyph can not be found. NOTE: This should only be called after a character has been shown to be NOT present in the font. It can not be called beforehand because some fonts contain private area characters and so on. Issue#588.

Parameters:

codePoint -

Returns:

whether codePoint is printable

isSafeFontCodePointToPrint

public static boolean isSafeFontCodePointToPrint(int codePoint)

Whether the code point should be passed through to the font for rendering. It effectively filters out characters that have been shown to be problematic in some (broken) fonts such as visible soft-hyphens.

areAllCharactersPrintable

public static boolean areAllCharactersPrintable(String str)

Returns true, when all characters of the given string are printable.

Parameters:

str - a non-null string to test

Returns:

whether all characters are printable

parseIntegerOrNull

public static Integer parseIntegerOrNull(String possibleInteger)

firstNonZero

public static int firstNonZero(int... values)

First non-zero value or zero if none.

closeQuietly

public static void closeQuietly(Closeable resource)

tryQuietly

public static void tryQuietly(Runnable r)

readAll

public static byte[] readAll(InputStream is)
                      throws IOException

Throws:

IOException

readAll

public static String readAll(Reader reader)
                      throws IOException

Throws:

IOException

readString

public static String readString(InputStream is)
                         throws IOException

Reads a stream to a string using UTF-8 encoding.

Throws:

IOException

readString

public static String readString(Class<?> clazz,
                                String resource)
                         throws IOException

Reads a resource to a string using UTF-8.

Throws:

IOException

rethrowingFunction

public static <T,R> Function<T,R> rethrowingFunction(OpenUtil.ThrowableFunction<T,R> func)

Given a OpenUtil.ThrowableFunction (which can throw checked exceptions) returns a standard Function (which can't throw checked exceptions).

In the returned function, checked exceptions are wrapped in RuntimeException and rethrown.

rethrowingConsumer

public static <T> Consumer<T> rethrowingConsumer(OpenUtil.ThrowableConsumer<T> consumer)

Same as rethrowingFunction(ThrowableFunction) for consumers.