What Is fop.jar? I got it from the fop-2.7-bin.zip.

fop.jar in fop-2.7-bin.zip is the JAR file for FOP 2.7, which is a print formatter driven by XSL formatting objects (XSL-FO). You can obtain fop.jar from the build folder of the fop-2.7-bin.zip file.

Below is the information about the fop.jar (2.2) file:

JAR File Size and Download Location:

JAR name: fop.jar, fop-2.7.jar
Target JDK version: 1.7
File name: fop.jar
File size: 4442817 bytes
Release date: 20-Jan-2022
Download: Apache FOP Website

Java source code files for fop.jar:

⏎ org/apache/fop/render/pdf/extensions/PDFElementMapping.java

/*
 * 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: PDFElementMapping.java 1666117 2015-03-12 10:13:48Z ssteiner $ */

package org.apache.fop.render.pdf.extensions;

import org.apache.fop.fo.ElementMapping;
import org.apache.fop.fo.FONode;

/**
 * This class provides the element mapping for the PDF-specific extensions.
 */
public class PDFElementMapping extends ElementMapping {

    /** Namespace for the extension */
    public static final String NAMESPACE = "http://xmlgraphics.apache.org/fop/extensions/pdf";

    /** Main constructor */
    public PDFElementMapping() {
        this.namespaceURI = NAMESPACE;
    }

    /** {@inheritDoc} */
    protected void initialize() {
        if (foObjs == null) {
            foObjs = new java.util.HashMap<String, Maker>();
            // pdf:action
            foObjs.put(PDFDictionaryType.Action.elementName(), new PDFActionElementMaker());
            // pdf:array
            foObjs.put(PDFObjectType.Array.elementName(), new PDFArrayElementMaker());
            // pdf:boolean
            foObjs.put(PDFObjectType.Boolean.elementName(), new PDFCollectionEntryElementMaker(PDFObjectType.Boolean));
            // pdf:catalog
            foObjs.put(PDFDictionaryType.Catalog.elementName(), new PDFCatalogElementMaker());
            // pdf:dictionary
            foObjs.put(PDFDictionaryType.Dictionary.elementName(), new PDFDictionaryElementMaker());
            // pdf:embedded-file
            foObjs.put(PDFEmbeddedFileElement.ELEMENT, new PDFEmbeddedFileElementMaker());
            // pdf:name
            foObjs.put(PDFObjectType.Name.elementName(), new PDFCollectionEntryElementMaker(PDFObjectType.Name));
            // pdf:number
            foObjs.put(PDFObjectType.Number.elementName(), new PDFCollectionEntryElementMaker(PDFObjectType.Number));
            // pdf:navigator
            foObjs.put(PDFDictionaryType.Navigator.elementName(), new PDFNavigatorElementMaker());
            // pdf:layer
            foObjs.put(PDFDictionaryType.Layer.elementName(), new PDFLayerElementMaker());
            // pdf:page
            foObjs.put(PDFDictionaryType.Page.elementName(), new PDFPageElementMaker());
            // pdf:reference
            foObjs.put(PDFObjectType.Reference.elementName(), new PDFReferenceElementMaker());
            // pdf:string
            foObjs.put(PDFObjectType.String.elementName(), new PDFCollectionEntryElementMaker(PDFObjectType.String));
            // pdf:info
            foObjs.put(PDFDictionaryType.Info.elementName(), new PDFDocumentInformationElementMaker());
            // pdf:vt
            foObjs.put(PDFDictionaryType.VT.elementName(), new PDFVTElementMaker());
            // pdf:pagepiece
            foObjs.put(PDFDictionaryType.PagePiece.elementName(), new PDFPagePieceElementMaker());
        }
    }

    static class PDFActionElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFActionElement(parent);
        }
    }

    static class PDFArrayElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFArrayElement(parent);
        }
    }

    static class PDFCatalogElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFCatalogElement(parent);
        }
    }

    static class PDFDocumentInformationElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFDocumentInformationElement(parent);
        }
    }

    static class PDFDictionaryElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFDictionaryElement(parent, PDFDictionaryType.Dictionary);
        }
    }

    static class PDFEmbeddedFileElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFEmbeddedFileElement(parent);
        }
    }

    static class PDFLayerElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFLayerElement(parent);
        }
    }

    static class PDFNavigatorElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFNavigatorElement(parent);
        }
    }

    static class PDFPageElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFPageElement(parent);
        }
    }

    static class PDFCollectionEntryElementMaker extends ElementMapping.Maker {
        private PDFObjectType entryType;
        PDFCollectionEntryElementMaker(PDFObjectType entryType) {
            this.entryType = entryType;
        }
        public FONode make(FONode parent) {
            return new PDFCollectionEntryElement(parent, entryType);
        }
    }

    static class PDFReferenceElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFReferenceElement(parent);
        }
    }

    static class PDFVTElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFVTElement(parent);
        }
    }

    static class PDFPagePieceElementMaker extends ElementMapping.Maker {
        public FONode make(FONode parent) {
            return new PDFPagePieceElement(parent);
        }
    }
}

⏎ org/apache/fop/render/pdf/extensions/PDFElementMapping.java

Or download all of them as a single archive file:

File name: fop-2.7-src.zip
File size: 3401312 bytes
Release date: 2022-01-20
Download 

⇒ "fop" Command in fop-2.7-bin.zip

⇐ What Is fop-2.7-bin.zip

⇑ Download and Installing of FOP 2.x

⇑⇑ FAQ for FOP (Formatting Object Processor)