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gnu.javax.print.ipp

Class IppUtilities

public final class IppUtilities
extends Object
Collection of static utilities methods used in IPP response parsing and all over the place.

Also provides mapping from the attribute name values to the actual class object. Used to construct objects via reflection.

Method Summary

static int
convertToInt(byte b1, byte b2, byte b3, byte b4)
Helper method to convert to an int.
static int
convertToInt(byte[] b)
Helper method to convert to an int.
static short
convertToShort(byte b1, byte b2)
Helper method to convert to a short.
static Class
extends Attribute> getClass(String name)
Returns the implementing class object for given attribute name objects.
static Class
extends Attribute> getSupportedCategory(Attribute> clazz)
Returns the category of the supported attribute based on the given standard attribute category.
static Attribute
getEnumAttribute(String name, Object value)
Instantiates an EnumSyntax based attribute with the given IPP name and the given value (Enums maybe int or String based).
static Attribute
getIntegerAttribute(String name, int value)
Instantiates an IntegerSyntax based attribute with the given IPP name for the given int value.
static String
getSupportedAttrName(Attribute> clazz)
Returns the name of the supported attribute based on the given standard attribute category.
static Attribute
getTextAttribute(String name, byte tag, byte[] value)
Instantiates an TextSyntax based attribute with the given IPP name for the given text value (will be decoded).

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

convertToInt

public static int convertToInt(byte b1,
                               byte b2,
                               byte b3,
                               byte b4)
Helper method to convert to an int.
Parameters:
b1 - the 1th byte
b2 - the 2th byte
b3 - the 3th byte
b4 - the 4th byte
Returns:
The converted int.

convertToInt

public static int convertToInt(byte[] b)
Helper method to convert to an int.
Parameters:
b - the byte array
Returns:
The converted int.

convertToShort

public static short convertToShort(byte b1,
                                   byte b2)
Helper method to convert to a short.
Parameters:
b1 - the 1th byte
b2 - the 2th byte
Returns:
The converted short.

extends Attribute> getClass

public static Classextends Attribute> getClass(String name)
Returns the implementing class object for given attribute name objects.
Parameters:
name - the attribute name
Returns:
The Class object.

extends Attribute> getSupportedCategory

public static Classextends Attribute> getSupportedCategory(Attribute> clazz)
Returns the category of the supported attribute based on the given standard attribute category.
Parameters:
clazz - the standard attribute category
Returns:
The supported attribute category.

getEnumAttribute

public static Attribute getEnumAttribute(String name,
                                         Object value)
Instantiates an EnumSyntax based attribute with the given IPP name and the given value (Enums maybe int or String based).
Parameters:
name - the attribute name of the subclass.
value - the integer value of the specific enum.
Returns:
The Attribute (a subclass of EnumSyntax)

getIntegerAttribute

public static Attribute getIntegerAttribute(String name,
                                            int value)
Instantiates an IntegerSyntax based attribute with the given IPP name for the given int value.
Parameters:
name - the attribute name of the subclass.
value - the integer value
Returns:
The Attribute (a subclass of IntegerSyntax)

getSupportedAttrName

public static String getSupportedAttrName(Attribute> clazz)
Returns the name of the supported attribute based on the given standard attribute category.
Parameters:
clazz - the standard attribute category
Returns:
The name of the supported attribute category.

getTextAttribute

public static Attribute getTextAttribute(String name,
                                         byte tag,
                                         byte[] value)
Instantiates an TextSyntax based attribute with the given IPP name for the given text value (will be decoded).
Parameters:
name - the attribute name of the subclass.
tag - the tag defined in IppValueTag
value - the byte[] value to be decoded based on the tag value.
Returns:
The Attribute (a subclass of TextSyntax)
IppUtilities.java -- Copyright (C) 2006 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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