org.apache.fop.afp.modca.triplets.ObjectClassificationTriplet Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: ObjectClassificationTriplet.java 1297404 2012-03-06 10:17:54Z vhennebert $ */
package org.apache.fop.afp.modca.triplets;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.fop.afp.AFPConstants;
import org.apache.fop.afp.modca.Registry.ObjectType;
import org.apache.fop.afp.util.StringUtils;
/**
* The Object Classification is used to classify and identify object data.
* The object data may or may not be defined by an IBM presentation architecture
*/
public class ObjectClassificationTriplet extends AbstractTriplet {
/**
* The scope of this object is the including page or overlay
*/
public static final byte CLASS_TIME_INVARIANT_PAGINATED_PRESENTATION_OBJECT = 0x01;
/**
* The scope of this object is not defined
*/
public static final byte CLASS_TIME_VARIANT_PRESENTATION_OBJECT = 0x10;
/**
* This is not a presentation object, the scope of this object is not defined
*/
public static final byte CLASS_EXECUTABLE_PROGRAM = 0x20;
/**
* Setup information file, document level. This is not a presentation object,
*/
public static final byte CLASS_SETUP_FILE = 0x30;
/**
* This is a resource used by a presentation object that may itself be a resource.
* The scope of the resource is the object that uses the resource.
*/
public static final byte CLASS_SECONDARY_RESOURCE = 0x40;
/**
* Data object font. This is a non-FOCA font resource used to present
* text in a data object. The scope of the resource is the object that
* uses the resource.
*/
public static final byte CLASS_DATA_OBJECT_FONT = 0x41;
/** the object class */
private final byte objectClass;
/** the object type */
private final ObjectType objectType;
/** whether the container has an object environment group */
private final boolean containerHasOEG;
/** whether the data resides within the container */
private final boolean dataInContainer;
/** whether the data resides within the object container data */
private final boolean dataInOCD;
/** the object level (version) */
private final String objectLevel;
/** the company/organization name */
private final String companyName;
/**
* Main constructor
*
* @param objectClass the object class type
* @param objectType the object type registry entry
* @param dataInContainer whether the data resides in the container
* @param containerHasOEG whether the container has an object environment group
* @param dataInOCD whether the data resides in a object container data structured field
*/
public ObjectClassificationTriplet(byte objectClass, ObjectType objectType,
boolean dataInContainer, boolean containerHasOEG, boolean dataInOCD) {
// no object level or company name specified
this(objectClass, objectType, dataInContainer, containerHasOEG, dataInOCD, null, null);
}
/**
* Fully parameterized constructor
*
* @param objectClass the object class type
* @param objectType the object type registry entry
* @param dataInContainer whether the data resides in the container
* @param containerHasOEG whether the container has an object environment group
* @param dataInOCD whether the data resides in a object container data structured field
* @param objLev the release level or version number of the object type
* @param compName the name of the company or organization that owns the object definition
*/
public ObjectClassificationTriplet(byte objectClass, ObjectType objectType,
boolean dataInContainer, boolean containerHasOEG, boolean dataInOCD,
String objLev, String compName) {
super(OBJECT_CLASSIFICATION);
this.objectClass = objectClass;
if (objectType == null) {
throw new IllegalArgumentException("MO:DCA Registry object type is null");
}
this.objectType = objectType;
this.dataInContainer = dataInContainer;
this.containerHasOEG = containerHasOEG;
this.dataInOCD = dataInOCD;
this.objectLevel = objLev;
this.companyName = compName;
}
/**
* Returns the structured field flags
*
* @param dataInContainer true if the object data in carried in the object container
* @param containerHasOEG true if the object container has an object environment group
* @param dataInOCD true if the object container data carries the object data
*
* @return the byte value of this structure
*/
public byte[] getStructureFlagsAsBytes(boolean dataInContainer, boolean containerHasOEG,
boolean dataInOCD) {
byte[] strucFlgs = new byte[2];
// Object Container (BOC/EOC)
if (dataInContainer) {
strucFlgs[0] |= 3 << 6;
} else {
strucFlgs[0] |= 1 << 6;
}
// Object Environment Group (OEG)
if (containerHasOEG) {
strucFlgs[0] |= 3 << 4;
} else {
strucFlgs[0] |= 1 << 4;
}
// Object Container Data (OCD) structured fields
if (dataInOCD) {
strucFlgs[0] |= 3 << 2;
} else {
strucFlgs[0] |= 1 << 2;
}
strucFlgs[1] = 0x00;
return strucFlgs;
}
/** {@inheritDoc} */
public int getDataLength() {
return 96;
}
private static final int OBJECT_LEVEL_LEN = 8;
private static final int OBJECT_TYPE_NAME_LEN = 32;
private static final int COMPANY_NAME_LEN = 32;
/** {@inheritDoc} */
public void writeToStream(OutputStream os) throws IOException {
byte[] data = getData();
data[2] = 0x00; // reserved (must be zero)
data[3] = objectClass; // ObjClass
data[4] = 0x00; // reserved (must be zero)
data[5] = 0x00; // reserved (must be zero)
// StrucFlgs - Information on the structure of the object container
byte[] structureFlagsBytes
= getStructureFlagsAsBytes(dataInContainer, containerHasOEG, dataInOCD);
data[6] = structureFlagsBytes[0];
data[7] = structureFlagsBytes[1];
byte[] objectIdBytes = objectType.getOID();
// RegObjId - MOD:CA-registered ASN.1 OID for object type (8-23)
System.arraycopy(objectIdBytes, 0, data, 8, objectIdBytes.length);
// ObjTpName - name of object type (24-55)
byte[] objectTypeNameBytes;
objectTypeNameBytes
= StringUtils.rpad(objectType.getName(), ' ', OBJECT_TYPE_NAME_LEN).getBytes(
AFPConstants.EBCIDIC_ENCODING);
System.arraycopy(objectTypeNameBytes, 0, data, 24, objectTypeNameBytes.length);
// ObjLev - release level or version number of object type (56-63)
byte[] objectLevelBytes;
objectLevelBytes = StringUtils.rpad(objectLevel, ' ', OBJECT_LEVEL_LEN).getBytes(
AFPConstants.EBCIDIC_ENCODING);
System.arraycopy(objectLevelBytes, 0, data, 56, objectLevelBytes.length);
// CompName - name of company or organization that owns object definition (64-95)
byte[] companyNameBytes;
companyNameBytes = StringUtils.rpad(companyName, ' ', COMPANY_NAME_LEN).getBytes(
AFPConstants.EBCIDIC_ENCODING);
System.arraycopy(companyNameBytes, 0, data, 64, companyNameBytes.length);
os.write(data);
}
}
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