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com.itextpdf.testutils.CompareTool Maven / Gradle / Ivy
/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2019 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.testutils;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Meta;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.io.RandomAccessSourceFactory;
import com.itextpdf.text.pdf.*;
import com.itextpdf.text.pdf.parser.ContentByteUtils;
import com.itextpdf.text.pdf.parser.ImageRenderInfo;
import com.itextpdf.text.pdf.parser.InlineImageInfo;
import com.itextpdf.text.pdf.parser.InlineImageUtils;
import com.itextpdf.text.pdf.parser.PdfContentStreamProcessor;
import com.itextpdf.text.pdf.parser.RenderListener;
import com.itextpdf.text.pdf.parser.SimpleTextExtractionStrategy;
import com.itextpdf.text.pdf.parser.TaggedPdfReaderTool;
import com.itextpdf.text.pdf.parser.TextExtractionStrategy;
import com.itextpdf.text.pdf.parser.TextRenderInfo;
import com.itextpdf.text.xml.XMLUtil;
import com.itextpdf.text.xml.xmp.PdfProperties;
import com.itextpdf.text.xml.xmp.XmpBasicProperties;
import com.itextpdf.xmp.XMPConst;
import com.itextpdf.xmp.XMPException;
import com.itextpdf.xmp.XMPMeta;
import com.itextpdf.xmp.XMPMetaFactory;
import com.itextpdf.xmp.XMPUtils;
import com.itextpdf.xmp.options.SerializeOptions;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Stack;
import java.util.StringTokenizer;
import java.util.TreeSet;
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Helper class for tests: uses ghostscript to compare PDFs at a pixel level.
*/
@SuppressWarnings("ResultOfMethodCallIgnored")
public class CompareTool {
private class ObjectPath {
protected RefKey baseCmpObject;
protected RefKey baseOutObject;
protected Stack path = new Stack();
protected Stack> indirects = new Stack>();
public ObjectPath() {
}
protected ObjectPath(RefKey baseCmpObject, RefKey baseOutObject) {
this.baseCmpObject = baseCmpObject;
this.baseOutObject = baseOutObject;
}
private ObjectPath(RefKey baseCmpObject, RefKey baseOutObject, Stack path) {
this.baseCmpObject = baseCmpObject;
this.baseOutObject = baseOutObject;
this.path = path;
}
private class Pair {
private T first;
private T second;
public Pair(T first, T second) {
this.first = first;
this.second = second;
}
@Override
public int hashCode() {
return first.hashCode() * 31 + second.hashCode();
}
@Override
public boolean equals(Object obj) {
return (obj instanceof Pair && first.equals(((Pair) obj).first) && second.equals(((Pair) obj).second));
}
}
private abstract class PathItem {
protected abstract Node toXmlNode(Document document);
}
private class DictPathItem extends PathItem {
String key;
public DictPathItem(String key) {
this.key = key;
}
@Override
public String toString() {
return "Dict key: " + key;
}
@Override
public int hashCode() {
return key.hashCode();
}
@Override
public boolean equals(Object obj) {
return obj instanceof DictPathItem && key.equals(((DictPathItem) obj).key);
}
@Override
protected Node toXmlNode(Document document) {
Node element = document.createElement("dictKey");
element.appendChild(document.createTextNode(key));
return element;
}
}
private class ArrayPathItem extends PathItem {
int index;
public ArrayPathItem(int index) {
this.index = index;
}
@Override
public String toString() {
return "Array index: " + String.valueOf(index);
}
@Override
public int hashCode() {
return index;
}
@Override
public boolean equals(Object obj) {
return obj instanceof ArrayPathItem && index == ((ArrayPathItem) obj).index;
}
@Override
protected Node toXmlNode(Document document) {
Node element = document.createElement("arrayIndex");
element.appendChild(document.createTextNode(String.valueOf(index)));
return element;
}
}
private class OffsetPathItem extends PathItem {
int offset;
public OffsetPathItem(int offset) {
this.offset = offset;
}
@Override
public String toString() {
return "Offset: " + String.valueOf(offset);
}
@Override
public int hashCode() {
return offset;
}
@Override
public boolean equals(Object obj) {
return obj instanceof OffsetPathItem && offset == ((OffsetPathItem) obj).offset;
}
@Override
protected Node toXmlNode(Document document) {
Node element = document.createElement("offset");
element.appendChild(document.createTextNode(String.valueOf(offset)));
return element;
}
}
public ObjectPath resetDirectPath(RefKey baseCmpObject, RefKey baseOutObject) {
ObjectPath newPath = new ObjectPath(baseCmpObject, baseOutObject);
newPath.indirects = (Stack>) indirects.clone();
newPath.indirects.add(new Pair(baseCmpObject, baseOutObject));
return newPath;
}
public boolean isComparing(RefKey baseCmpObject, RefKey baseOutObject) {
return indirects.contains(new Pair(baseCmpObject, baseOutObject));
}
public void pushArrayItemToPath(int index) {
path.add(new ArrayPathItem(index));
}
public void pushDictItemToPath(String key) {
path.add(new DictPathItem(key));
}
public void pushOffsetToPath(int offset) {
path.add(new OffsetPathItem(offset));
}
public void pop() {
path.pop();
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(String.format("Base cmp object: %s obj. Base out object: %s obj", baseCmpObject, baseOutObject));
for (PathItem pathItem : path) {
sb.append("\n");
sb.append(pathItem.toString());
}
return sb.toString();
}
@Override
public int hashCode() {
int hashCode1 = baseCmpObject != null ? baseCmpObject.hashCode() : 1;
int hashCode2 = baseOutObject != null ? baseOutObject.hashCode() : 1;
int hashCode = hashCode1 * 31 + hashCode2;
for (PathItem pathItem : path) {
hashCode *= 31;
hashCode += pathItem.hashCode();
}
return hashCode;
}
@Override
public boolean equals(Object obj) {
return obj instanceof ObjectPath && baseCmpObject.equals(((ObjectPath) obj).baseCmpObject) && baseOutObject.equals(((ObjectPath) obj).baseOutObject) &&
path.equals(((ObjectPath) obj).path);
}
@Override
protected Object clone() {
return new ObjectPath(baseCmpObject, baseOutObject, (Stack) path.clone());
}
public Node toXmlNode(Document document) {
Element element = document.createElement("path");
Element baseNode = document.createElement("base");
baseNode.setAttribute("cmp", baseCmpObject.toString() + " obj");
baseNode.setAttribute("out", baseOutObject.toString() + " obj");
element.appendChild(baseNode);
for (PathItem pathItem : path) {
element.appendChild(pathItem.toXmlNode(document));
}
return element;
}
}
protected class CompareResult {
// LinkedHashMap to retain order. HashMap has different order in Java6/7 and Java8
protected Map differences = new LinkedHashMap();
protected int messageLimit = 1;
public CompareResult(int messageLimit) {
this.messageLimit = messageLimit;
}
public boolean isOk() {
return differences.size() == 0;
}
public int getErrorCount() {
return differences.size();
}
protected boolean isMessageLimitReached() {
return differences.size() >= messageLimit;
}
public String getReport() {
StringBuilder sb = new StringBuilder();
boolean firstEntry = true;
for (Map.Entry entry : differences.entrySet()) {
if (!firstEntry)
sb.append("-----------------------------").append("\n");
ObjectPath diffPath = entry.getKey();
sb.append(entry.getValue()).append("\n").append(diffPath.toString()).append("\n");
firstEntry = false;
}
return sb.toString();
}
protected void addError(ObjectPath path, String message) {
if (differences.size() < messageLimit) {
differences.put(((ObjectPath) path.clone()), message);
}
}
public void writeReportToXml(OutputStream stream) throws ParserConfigurationException, TransformerException {
Document xmlReport = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
Element root = xmlReport.createElement("report");
Element errors = xmlReport.createElement("errors");
errors.setAttribute("count", String.valueOf(differences.size()));
root.appendChild(errors);
for (Map.Entry entry : differences.entrySet()) {
Node errorNode = xmlReport.createElement("error");
Node message = xmlReport.createElement("message");
message.appendChild(xmlReport.createTextNode(entry.getValue()));
Node path = entry.getKey().toXmlNode(xmlReport);
errorNode.appendChild(message);
errorNode.appendChild(path);
errors.appendChild(errorNode);
}
xmlReport.appendChild(root);
TransformerFactory tFactory = TransformerFactory.newInstance();
try {
tFactory.setAttribute(XMLConstants.FEATURE_SECURE_PROCESSING, true);
} catch (Exception exc) {}
Transformer transformer = tFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
DOMSource source = new DOMSource(xmlReport);
StreamResult result = new StreamResult(stream);
transformer.transform(source, result);
}
}
private String gsExec;
private String compareExec;
private final String gsParams = " -dNOPAUSE -dBATCH -sDEVICE=png16m -r150 -sOutputFile= ";
private final String compareParams = " \"\" \"\" \"\"";
static private final String cannotOpenTargetDirectory = "Cannot open target directory for .";
static private final String gsFailed = "GhostScript failed for .";
static private final String unexpectedNumberOfPages = "Unexpected number of pages for .";
static private final String differentPages = "File differs on page .";
static private final String undefinedGsPath = "Path to GhostScript is not specified. Please use -DgsExec= (e.g. -DgsExec=\"C:/Program Files/gs/gs9.14/bin/gswin32c.exe\")";
static private final String ignoredAreasPrefix = "ignored_areas_";
private String cmpPdf;
private String cmpPdfName;
private String cmpImage;
private String outPdf;
private String outPdfName;
private String outImage;
List outPages;
List outPagesRef;
List cmpPages;
List cmpPagesRef;
private int compareByContentErrorsLimit = 1;
private boolean generateCompareByContentXmlReport = false;
private String xmlReportName = "report";
private double floatComparisonError = 0;
// if false, the error will be relative
private boolean absoluteError = true;
public CompareTool() {
gsExec = System.getProperty("gsExec");
if (gsExec == null) {
gsExec = System.getenv("gsExec");
}
compareExec = System.getProperty("compareExec");
if (compareExec == null) {
compareExec = System.getenv("compareExec");
}
}
private String compare(String outPath, String differenceImagePrefix, Map> ignoredAreas) throws IOException, InterruptedException, DocumentException {
return compare(outPath, differenceImagePrefix, ignoredAreas, null);
}
private String compare(String outPath, String differenceImagePrefix, Map> ignoredAreas,
List equalPages) throws IOException, InterruptedException, DocumentException {
if (gsExec == null)
return undefinedGsPath;
if (!(new File(gsExec).exists())) {
return new File(gsExec).getAbsolutePath() + " does not exist";
}
if (!outPath.endsWith("/"))
outPath = outPath + "/";
File targetDir = new File(outPath);
File[] imageFiles;
File[] cmpImageFiles;
if (!targetDir.exists()) {
targetDir.mkdirs();
} else {
imageFiles = targetDir.listFiles(new PngFileFilter());
for (File file : imageFiles) {
file.delete();
}
cmpImageFiles = targetDir.listFiles(new CmpPngFileFilter());
for (File file : cmpImageFiles) {
file.delete();
}
}
File diffFile = new File(outPath + differenceImagePrefix);
if (diffFile.exists()) {
diffFile.delete();
}
if (ignoredAreas != null && !ignoredAreas.isEmpty()) {
PdfReader cmpReader = new PdfReader(cmpPdf);
PdfReader outReader = new PdfReader(outPdf);
PdfStamper outStamper = new PdfStamper(outReader, new FileOutputStream(outPath + ignoredAreasPrefix + outPdfName));
PdfStamper cmpStamper = new PdfStamper(cmpReader, new FileOutputStream(outPath + ignoredAreasPrefix + cmpPdfName));
for (Map.Entry> entry : ignoredAreas.entrySet()) {
int pageNumber = entry.getKey();
List rectangles = entry.getValue();
if (rectangles != null && !rectangles.isEmpty()) {
PdfContentByte outCB = outStamper.getOverContent(pageNumber);
PdfContentByte cmpCB = cmpStamper.getOverContent(pageNumber);
for (Rectangle rect : rectangles) {
rect.setBackgroundColor(BaseColor.BLACK);
outCB.rectangle(rect);
cmpCB.rectangle(rect);
}
}
}
outStamper.close();
cmpStamper.close();
outReader.close();
cmpReader.close();
init(outPath + ignoredAreasPrefix + outPdfName, outPath + ignoredAreasPrefix + cmpPdfName);
}
if (targetDir.exists()) {
String gsParams = this.gsParams.replace("", outPath + cmpImage).replace("", cmpPdf);
Process p = runProcess(gsExec , gsParams);
BufferedReader bri = new BufferedReader(new InputStreamReader(p.getInputStream()));
BufferedReader bre = new BufferedReader(new InputStreamReader(p.getErrorStream()));
String line;
while ((line = bri.readLine()) != null) {
System.out.println(line);
}
bri.close();
while ((line = bre.readLine()) != null) {
System.out.println(line);
}
bre.close();
if (p.waitFor() == 0) {
gsParams = this.gsParams.replace("", outPath + outImage).replace("", outPdf);
p = runProcess(gsExec , gsParams);
bri = new BufferedReader(new InputStreamReader(p.getInputStream()));
bre = new BufferedReader(new InputStreamReader(p.getErrorStream()));
while ((line = bri.readLine()) != null) {
System.out.println(line);
}
bri.close();
while ((line = bre.readLine()) != null) {
System.out.println(line);
}
bre.close();
int exitValue = p.waitFor();
if (exitValue == 0) {
imageFiles = targetDir.listFiles(new PngFileFilter());
cmpImageFiles = targetDir.listFiles(new CmpPngFileFilter());
boolean bUnexpectedNumberOfPages = false;
if (imageFiles.length != cmpImageFiles.length) {
bUnexpectedNumberOfPages = true;
}
int cnt = Math.min(imageFiles.length, cmpImageFiles.length);
if (cnt < 1) {
return "No files for comparing!!!\nThe result or sample pdf file is not processed by GhostScript.";
}
Arrays.sort(imageFiles, new ImageNameComparator());
Arrays.sort(cmpImageFiles, new ImageNameComparator());
String differentPagesFail = null;
for (int i = 0; i < cnt; i++) {
if (equalPages != null && equalPages.contains(i))
continue;
System.out.print("Comparing page " + Integer.toString(i + 1) + " (" + imageFiles[i].getAbsolutePath() + ")...");
FileInputStream is1 = new FileInputStream(imageFiles[i]);
FileInputStream is2 = new FileInputStream(cmpImageFiles[i]);
boolean cmpResult = compareStreams(is1, is2);
is1.close();
is2.close();
if (!cmpResult) {
if (compareExec != null && new File(compareExec).exists()) {
String compareParams = this.compareParams.replace("", imageFiles[i].getAbsolutePath()).replace("", cmpImageFiles[i].getAbsolutePath()).replace("", outPath + differenceImagePrefix + Integer.toString(i + 1) + ".png");
p = runProcess(compareExec , compareParams);
bre = new BufferedReader(new InputStreamReader(p.getErrorStream()));
while ((line = bre.readLine()) != null) {
System.out.println(line);
}
bre.close();
int cmpExitValue = p.waitFor();
if (cmpExitValue == 0) {
if (differentPagesFail == null) {
differentPagesFail = differentPages.replace("", outPdf).replace("", Integer.toString(i + 1));
differentPagesFail += "\nPlease, examine " + outPath + differenceImagePrefix + Integer.toString(i + 1) + ".png for more details.";
} else {
differentPagesFail =
"File " + outPdf + " differs.\nPlease, examine difference images for more details.";
}
} else {
differentPagesFail = differentPages.replace("", outPdf).replace("", Integer.toString(i + 1));
}
} else {
differentPagesFail = differentPages.replace("", outPdf).replace("", Integer.toString(i + 1));
differentPagesFail += "\nYou can optionally specify path to ImageMagick compare tool (e.g. -DcompareExec=\"C:/Program Files/ImageMagick-6.5.4-2/compare.exe\") to visualize differences.";
break;
}
System.out.println(differentPagesFail);
} else {
System.out.println("done.");
}
}
if (differentPagesFail != null) {
return differentPagesFail;
} else {
if (bUnexpectedNumberOfPages)
return unexpectedNumberOfPages.replace("", outPdf);
}
} else {
return gsFailed.replace("", outPdf);
}
} else {
return gsFailed.replace("", cmpPdf);
}
} else {
return cannotOpenTargetDirectory.replace("", outPdf);
}
return null;
}
private Process runProcess(String execPath, String params) throws IOException, InterruptedException {
StringTokenizer st = new StringTokenizer(params);
String[] cmdArray = new String[st.countTokens() + 1];
cmdArray[0] = execPath;
for (int i = 1; st.hasMoreTokens(); ++i)
cmdArray[i] = st.nextToken();
Process p = Runtime.getRuntime().exec(cmdArray);
return p;
}
public String compare(String outPdf, String cmpPdf, String outPath, String differenceImagePrefix, Map> ignoredAreas) throws IOException, InterruptedException, DocumentException {
init(outPdf, cmpPdf);
return compare(outPath, differenceImagePrefix, ignoredAreas);
}
public String compare(String outPdf, String cmpPdf, String outPath, String differenceImagePrefix) throws IOException, InterruptedException, DocumentException {
return compare(outPdf, cmpPdf, outPath, differenceImagePrefix, null);
}
/**
* Sets the maximum errors count which will be returned as the result of the comparison.
* @param compareByContentMaxErrorCount the errors count.
* @return Returns this.
*/
public CompareTool setCompareByContentErrorsLimit(int compareByContentMaxErrorCount) {
this.compareByContentErrorsLimit = compareByContentMaxErrorCount;
return this;
}
public void setGenerateCompareByContentXmlReport(boolean generateCompareByContentXmlReport) {
this.generateCompareByContentXmlReport = generateCompareByContentXmlReport;
}
/**
* Sets the absolute error parameter which will be used in floating point numbers comparison.
* @param error the epsilon new value.
* @return Returns this.
*/
public CompareTool setFloatAbsoluteError(float error) {
this.floatComparisonError = error;
this.absoluteError = true;
return this;
}
/**
* Sets the relative error parameter which will be used in floating point numbers comparison.
* @param error the epsilon new value.
* @return Returns this.
*/
public CompareTool setFloatRelativeError(float error) {
this.floatComparisonError = error;
this.absoluteError = false;
return this;
}
public String getXmlReportName() {
return xmlReportName;
}
public void setXmlReportName(String xmlReportName) {
this.xmlReportName = xmlReportName;
}
protected String compareByContent(String outPath, String differenceImagePrefix, Map> ignoredAreas) throws DocumentException, InterruptedException, IOException {
System.out.print("[itext] INFO Comparing by content..........");
PdfReader outReader = new PdfReader(outPdf);
outPages = new ArrayList();
outPagesRef = new ArrayList();
loadPagesFromReader(outReader, outPages, outPagesRef);
PdfReader cmpReader = new PdfReader(cmpPdf);
cmpPages = new ArrayList();
cmpPagesRef = new ArrayList();
loadPagesFromReader(cmpReader, cmpPages, cmpPagesRef);
if (outPages.size() != cmpPages.size())
return compare(outPath, differenceImagePrefix, ignoredAreas);
CompareResult compareResult = new CompareResult(compareByContentErrorsLimit);
List equalPages = new ArrayList(cmpPages.size());
for (int i = 0; i < cmpPages.size(); i++) {
ObjectPath currentPath = new ObjectPath(cmpPagesRef.get(i), outPagesRef.get(i));
if (compareDictionariesExtended(outPages.get(i), cmpPages.get(i), currentPath, compareResult))
equalPages.add(i);
}
PdfObject outStructTree = outReader.getCatalog().get(PdfName.STRUCTTREEROOT);
PdfObject cmpStructTree = cmpReader.getCatalog().get(PdfName.STRUCTTREEROOT);
RefKey outStructTreeRef = outStructTree == null ? null : new RefKey((PdfIndirectReference)outStructTree);
RefKey cmpStructTreeRef = cmpStructTree == null ? null : new RefKey((PdfIndirectReference)cmpStructTree);
compareObjects(outStructTree, cmpStructTree, new ObjectPath(outStructTreeRef, cmpStructTreeRef), compareResult);
PdfObject outOcProperties = outReader.getCatalog().get(PdfName.OCPROPERTIES);
PdfObject cmpOcProperties = cmpReader.getCatalog().get(PdfName.OCPROPERTIES);
RefKey outOcPropertiesRef = outOcProperties instanceof PdfIndirectReference ? new RefKey((PdfIndirectReference)outOcProperties) : null;
RefKey cmpOcPropertiesRef = cmpOcProperties instanceof PdfIndirectReference ? new RefKey((PdfIndirectReference)cmpOcProperties) : null;
compareObjects(outOcProperties, cmpOcProperties, new ObjectPath(outOcPropertiesRef, cmpOcPropertiesRef), compareResult);
outReader.close();
cmpReader.close();
if (generateCompareByContentXmlReport) {
try {
compareResult.writeReportToXml(new FileOutputStream(outPath + "/" + xmlReportName + ".xml"));
} catch (Exception exc) {}
}
if (equalPages.size() == cmpPages.size() && compareResult.isOk()) {
System.out.println("OK");
System.out.flush();
return null;
} else {
System.out.println("Fail");
System.out.flush();
String compareByContentReport = "Compare by content report:\n" + compareResult.getReport();
System.out.println(compareByContentReport);
System.out.flush();
String message = compare(outPath, differenceImagePrefix, ignoredAreas, equalPages);
if (message == null || message.length() == 0)
return "Compare by content fails. No visual differences";
return message;
}
}
public String compareByContent(String outPdf, String cmpPdf, String outPath, String differenceImagePrefix, Map> ignoredAreas) throws DocumentException, InterruptedException, IOException {
init(outPdf, cmpPdf);
return compareByContent(outPath, differenceImagePrefix, ignoredAreas);
}
public String compareByContent(String outPdf, String cmpPdf, String outPath, String differenceImagePrefix) throws DocumentException, InterruptedException, IOException {
return compareByContent(outPdf, cmpPdf, outPath, differenceImagePrefix, null);
}
private void loadPagesFromReader(PdfReader reader, List pages, List pagesRef) {
PdfObject pagesDict = reader.getCatalog().get(PdfName.PAGES);
addPagesFromDict(pagesDict, pages, pagesRef);
}
private void addPagesFromDict(PdfObject dictRef, List pages, List pagesRef) {
PdfDictionary dict = (PdfDictionary)PdfReader.getPdfObject(dictRef);
if (dict.isPages()) {
PdfArray kids = dict.getAsArray(PdfName.KIDS);
if (kids == null) return;
for (PdfObject kid : kids) {
addPagesFromDict(kid, pages, pagesRef);
}
} else if(dict.isPage()) {
pages.add(dict);
pagesRef.add(new RefKey((PRIndirectReference)dictRef));
}
}
private boolean compareObjects(PdfObject outObj, PdfObject cmpObj, ObjectPath currentPath, CompareResult compareResult) throws IOException {
PdfObject outDirectObj = PdfReader.getPdfObject(outObj);
PdfObject cmpDirectObj = PdfReader.getPdfObject(cmpObj);
if (cmpDirectObj == null && outDirectObj == null)
return true;
if (outDirectObj == null) {
compareResult.addError(currentPath, "Expected object was not found.");
return false;
} else if (cmpDirectObj == null) {
compareResult.addError(currentPath, "Found object which was not expected to be found.");
return false;
} else if (cmpDirectObj.type() != outDirectObj.type()) {
compareResult.addError(currentPath, String.format("Types do not match. Expected: %s. Found: %s.", cmpDirectObj.getClass().getSimpleName(), outDirectObj.getClass().getSimpleName()));
return false;
}
if (cmpObj.isIndirect() && outObj.isIndirect()) {
if (currentPath.isComparing(new RefKey((PdfIndirectReference) cmpObj), new RefKey((PdfIndirectReference) outObj)))
return true;
currentPath = currentPath.resetDirectPath(new RefKey((PdfIndirectReference) cmpObj), new RefKey((PdfIndirectReference) outObj));
}
if (cmpDirectObj.isDictionary() && ((PdfDictionary)cmpDirectObj).isPage()) {
if (!outDirectObj.isDictionary() || !((PdfDictionary)outDirectObj).isPage()) {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, "Expected a page. Found not a page.");
return false;
}
RefKey cmpRefKey = new RefKey((PRIndirectReference)cmpObj);
RefKey outRefKey = new RefKey((PRIndirectReference)outObj);
// References to the same page
if (cmpPagesRef.contains(cmpRefKey) && cmpPagesRef.indexOf(cmpRefKey) == outPagesRef.indexOf(outRefKey))
return true;
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("The dictionaries refer to different pages. Expected page number: %s. Found: %s",
cmpPagesRef.indexOf(cmpRefKey), outPagesRef.indexOf(outRefKey)));
return false;
}
if (cmpDirectObj.isDictionary()) {
if (!compareDictionariesExtended((PdfDictionary)outDirectObj, (PdfDictionary)cmpDirectObj, currentPath, compareResult))
return false;
} else if (cmpDirectObj.isStream()) {
if (!compareStreamsExtended((PRStream) outDirectObj, (PRStream) cmpDirectObj, currentPath, compareResult))
return false;
} else if (cmpDirectObj.isArray()) {
if (!compareArraysExtended((PdfArray) outDirectObj, (PdfArray) cmpDirectObj, currentPath, compareResult))
return false;
} else if (cmpDirectObj.isName()) {
if (!compareNamesExtended((PdfName) outDirectObj, (PdfName) cmpDirectObj, currentPath, compareResult))
return false;
} else if (cmpDirectObj.isNumber()) {
if (!compareNumbersExtended((PdfNumber) outDirectObj, (PdfNumber) cmpDirectObj, currentPath, compareResult))
return false;
} else if (cmpDirectObj.isString()) {
if (!compareStringsExtended((PdfString) outDirectObj, (PdfString) cmpDirectObj, currentPath, compareResult))
return false;
} else if (cmpDirectObj.isBoolean()) {
if (!compareBooleansExtended((PdfBoolean) outDirectObj, (PdfBoolean) cmpDirectObj, currentPath, compareResult))
return false;
} else if (cmpDirectObj instanceof PdfLiteral) {
if (!compareLiteralsExtended((PdfLiteral) outDirectObj, (PdfLiteral) cmpDirectObj, currentPath, compareResult))
return false;
} else if (outDirectObj.isNull() && cmpDirectObj.isNull()) {
} else {
throw new UnsupportedOperationException();
}
return true;
}
public boolean compareDictionaries(PdfDictionary outDict, PdfDictionary cmpDict) throws IOException {
return compareDictionariesExtended(outDict, cmpDict, null, null);
}
private boolean compareDictionariesExtended(PdfDictionary outDict, PdfDictionary cmpDict, ObjectPath currentPath, CompareResult compareResult) throws IOException {
if (cmpDict != null && outDict == null || outDict != null && cmpDict == null) {
compareResult.addError(currentPath, "One of the dictionaries is null, the other is not.");
return false;
}
boolean dictsAreSame = true;
// Iterate through the union of the keys of the cmp and out dictionaries!
Set mergedKeys = new TreeSet(cmpDict.getKeys());
mergedKeys.addAll(outDict.getKeys());
for (PdfName key : mergedKeys) {
if (key.compareTo(PdfName.PARENT) == 0 || key.compareTo(PdfName.P) == 0) continue;
if (outDict.isStream() && cmpDict.isStream() && (key.equals(PdfName.FILTER) || key.equals(PdfName.LENGTH))) continue;
if (key.compareTo(PdfName.BASEFONT) == 0 || key.compareTo(PdfName.FONTNAME) == 0) {
PdfObject cmpObj = cmpDict.getDirectObject(key);
if (cmpObj.isName() && cmpObj.toString().indexOf('+') > 0) {
PdfObject outObj = outDict.getDirectObject(key);
if (!outObj.isName() || outObj.toString().indexOf('+') == -1) {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("PdfDictionary %s entry: Expected: %s. Found: %s", key.toString(), cmpObj.toString(), outObj.toString()));
dictsAreSame = false;
}
String cmpName = cmpObj.toString().substring(cmpObj.toString().indexOf('+'));
String outName = outObj.toString().substring(outObj.toString().indexOf('+'));
if (!cmpName.equals(outName)) {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("PdfDictionary %s entry: Expected: %s. Found: %s", key.toString(), cmpObj.toString(), outObj.toString()));
dictsAreSame = false;
}
continue;
}
}
if (floatComparisonError != 0 && cmpDict.isPage() && outDict.isPage() && key.equals(PdfName.CONTENTS)) {
if (!compareContentStreamsByParsingExtended(outDict.getDirectObject(key), cmpDict.getDirectObject(key),
(PdfDictionary) outDict.getDirectObject(PdfName.RESOURCES), (PdfDictionary) cmpDict.getDirectObject(PdfName.RESOURCES),
currentPath, compareResult)) {
dictsAreSame = false;
}
continue;
}
if (currentPath != null)
currentPath.pushDictItemToPath(key.toString());
dictsAreSame = compareObjects(outDict.get(key), cmpDict.get(key), currentPath, compareResult) && dictsAreSame;
if (currentPath != null)
currentPath.pop();
if (!dictsAreSame && (currentPath == null || compareResult == null || compareResult.isMessageLimitReached()))
return false;
}
return dictsAreSame;
}
public boolean compareContentStreamsByParsing(PdfObject outObj, PdfObject cmpObj) throws IOException {
return compareContentStreamsByParsingExtended(outObj, cmpObj, null, null, null, null);
}
public boolean compareContentStreamsByParsing(PdfObject outObj, PdfObject cmpObj, PdfDictionary outResources, PdfDictionary cmpResources) throws IOException {
return compareContentStreamsByParsingExtended(outObj, cmpObj, outResources, cmpResources, null, null);
}
private boolean compareContentStreamsByParsingExtended(PdfObject outObj, PdfObject cmpObj, PdfDictionary outResources, PdfDictionary cmpResources, ObjectPath currentPath, CompareResult compareResult) throws IOException {
if (outObj.type() != outObj.type()) {
compareResult.addError(currentPath, String.format(
"PdfObject. Types are different. Expected: %s. Found: %s", cmpObj.type(), outObj.type()));
return false;
}
if (outObj.isArray()) {
PdfArray outArr = (PdfArray) outObj;
PdfArray cmpArr = (PdfArray) cmpObj;
if (cmpArr.size() != outArr.size()) {
compareResult.addError(currentPath, String.format(
"PdfArray. Sizes are different. Expected: %s. Found: %s", cmpArr.size(), outArr.size()));
return false;
}
for (int i = 0; i < cmpArr.size(); i++) {
if (!compareContentStreamsByParsingExtended(outArr.getPdfObject(i), cmpArr.getPdfObject(i), outResources, cmpResources, currentPath, compareResult)) {
return false;
}
}
}
PRTokeniser cmpTokeniser = new PRTokeniser(new RandomAccessFileOrArray(
new RandomAccessSourceFactory().createSource(ContentByteUtils.getContentBytesFromContentObject(cmpObj))));
PRTokeniser outTokeniser = new PRTokeniser(new RandomAccessFileOrArray(
new RandomAccessSourceFactory().createSource(ContentByteUtils.getContentBytesFromContentObject(outObj))));
PdfContentParser cmpPs = new PdfContentParser(cmpTokeniser);
PdfContentParser outPs = new PdfContentParser(outTokeniser);
ArrayList cmpOperands = new ArrayList();
ArrayList outOperands = new ArrayList();
while (cmpPs.parse(cmpOperands).size() > 0) {
outPs.parse(outOperands);
if (cmpOperands.size() != outOperands.size()) {
compareResult.addError(currentPath, String.format(
"PdfObject. Different commands lengths. Expected: %s. Found: %s", cmpOperands.size(), outOperands.size()));
return false;
}
if (cmpOperands.size() == 1 && compareLiterals((PdfLiteral) cmpOperands.get(0), new PdfLiteral("BI")) && compareLiterals((PdfLiteral) outOperands.get(0), new PdfLiteral("BI"))) {
PRStream cmpStr = (PRStream) cmpObj;
PRStream outStr = (PRStream) outObj;
if (null != outStr.getDirectObject(PdfName.RESOURCES) && null != cmpStr.getDirectObject(PdfName.RESOURCES)) {
outResources = (PdfDictionary) outStr.getDirectObject(PdfName.RESOURCES);
cmpResources = (PdfDictionary) cmpStr.getDirectObject(PdfName.RESOURCES);
}
if (!compareInlineImagesExtended(outPs, cmpPs, outResources, cmpResources, currentPath, compareResult)) {
return false;
}
continue;
}
for (int i = 0; i < cmpOperands.size(); i++) {
if (!compareObjects(outOperands.get(i), cmpOperands.get(i), currentPath, compareResult)) {
return false;
}
}
}
return true;
}
private boolean compareInlineImagesExtended(PdfContentParser outPs, PdfContentParser cmpPs, PdfDictionary outDict, PdfDictionary cmpDict, ObjectPath currentPath, CompareResult compareResult) throws IOException {
InlineImageInfo cmpInfo = InlineImageUtils.parseInlineImage(cmpPs, cmpDict);
InlineImageInfo outInfo = InlineImageUtils.parseInlineImage(outPs, outDict);
return compareObjects(outInfo.getImageDictionary(), cmpInfo.getImageDictionary(), currentPath, compareResult) &&
Arrays.equals(outInfo.getSamples(), cmpInfo.getSamples());
}
public boolean compareStreams(PRStream outStream, PRStream cmpStream) throws IOException {
return compareStreamsExtended(outStream, cmpStream, null, null);
}
private boolean compareStreamsExtended(PRStream outStream, PRStream cmpStream, ObjectPath currentPath, CompareResult compareResult) throws IOException {
boolean decodeStreams = PdfName.FLATEDECODE.equals(outStream.get(PdfName.FILTER));
byte[] outStreamBytes = PdfReader.getStreamBytesRaw(outStream);
byte[] cmpStreamBytes = PdfReader.getStreamBytesRaw(cmpStream);
if (decodeStreams) {
outStreamBytes = PdfReader.decodeBytes(outStreamBytes, outStream);
cmpStreamBytes = PdfReader.decodeBytes(cmpStreamBytes, cmpStream);
}
if (floatComparisonError != 0 &&
PdfName.XOBJECT.equals(cmpStream.getDirectObject(PdfName.TYPE)) &&
PdfName.XOBJECT.equals(outStream.getDirectObject(PdfName.TYPE)) &&
PdfName.FORM.equals(cmpStream.getDirectObject(PdfName.SUBTYPE)) &&
PdfName.FORM.equals(outStream.getDirectObject(PdfName.SUBTYPE))) {
return compareContentStreamsByParsingExtended(outStream, cmpStream, outStream.getAsDict(PdfName.RESOURCES), cmpStream.getAsDict(PdfName.RESOURCES), currentPath, compareResult) &&
compareDictionariesExtended(outStream, cmpStream, currentPath, compareResult);
} else {
if (Arrays.equals(outStreamBytes, cmpStreamBytes)) {
return compareDictionariesExtended(outStream, cmpStream, currentPath, compareResult);
} else {
if (cmpStreamBytes.length != outStreamBytes.length) {
if (compareResult != null && currentPath != null) {
compareResult.addError(currentPath, String.format("PRStream. Lengths are different. Expected: %s. Found: %s", cmpStreamBytes.length, outStreamBytes.length));
}
} else {
for (int i = 0; i < cmpStreamBytes.length; i++) {
if (cmpStreamBytes[i] != outStreamBytes[i]) {
int l = Math.max(0, i - 10);
int r = Math.min(cmpStreamBytes.length, i + 10);
if (compareResult != null && currentPath != null) {
currentPath.pushOffsetToPath(i);
compareResult.addError(currentPath, String.format("PRStream. The bytes differ at index %s. Expected: %s (%s). Found: %s (%s)",
i, new String(new byte[]{cmpStreamBytes[i]}), new String(cmpStreamBytes, l, r - l).replaceAll("\\n", "\\\\n"),
new String(new byte[]{outStreamBytes[i]}), new String(outStreamBytes, l, r - l).replaceAll("\\n", "\\\\n")));
currentPath.pop();
}
}
}
}
return false;
}
}
}
public boolean compareArrays(PdfArray outArray, PdfArray cmpArray) throws IOException {
return compareArraysExtended(outArray, cmpArray, null, null);
}
private boolean compareArraysExtended(PdfArray outArray, PdfArray cmpArray, ObjectPath currentPath, CompareResult compareResult) throws IOException {
if (outArray == null) {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, "Found null. Expected PdfArray.");
return false;
} else if (outArray.size() != cmpArray.size()) {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("PdfArrays. Lengths are different. Expected: %s. Found: %s.", cmpArray.size(), outArray.size()));
return false;
}
boolean arraysAreEqual = true;
for (int i = 0; i < cmpArray.size(); i++) {
if (currentPath != null)
currentPath.pushArrayItemToPath(i);
arraysAreEqual = compareObjects(outArray.getPdfObject(i), cmpArray.getPdfObject(i), currentPath, compareResult) && arraysAreEqual;
if (currentPath != null)
currentPath.pop();
if (!arraysAreEqual && (currentPath == null || compareResult == null || compareResult.isMessageLimitReached()))
return false;
}
return arraysAreEqual;
}
public boolean compareNames(PdfName outName, PdfName cmpName) {
return cmpName.compareTo(outName) == 0;
}
private boolean compareNamesExtended(PdfName outName, PdfName cmpName, ObjectPath currentPath, CompareResult compareResult) {
if (cmpName.compareTo(outName) == 0) {
return true;
} else {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("PdfName. Expected: %s. Found: %s", cmpName.toString(), outName.toString()));
return false;
}
}
public boolean compareNumbers(PdfNumber outNumber, PdfNumber cmpNumber) {
double difference = Math.abs(outNumber.doubleValue() - cmpNumber.doubleValue());
if (!absoluteError && cmpNumber.doubleValue() != 0) {
difference /= cmpNumber.doubleValue();
}
return difference <= floatComparisonError;
}
private boolean compareNumbersExtended(PdfNumber outNumber, PdfNumber cmpNumber, ObjectPath currentPath, CompareResult compareResult) {
if (compareNumbers(outNumber, cmpNumber)) {
return true;
} else {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("PdfNumber. Expected: %s. Found: %s", cmpNumber, outNumber));
return false;
}
}
public boolean compareStrings(PdfString outString, PdfString cmpString) {
return Arrays.equals(cmpString.getBytes(), outString.getBytes());
}
private boolean compareStringsExtended(PdfString outString, PdfString cmpString, ObjectPath currentPath, CompareResult compareResult) {
if (Arrays.equals(cmpString.getBytes(), outString.getBytes())) {
return true;
} else {
String cmpStr = cmpString.toUnicodeString();
String outStr = outString.toUnicodeString();
if (cmpStr.length() != outStr.length()) {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("PdfString. Lengths are different. Expected: %s. Found: %s", cmpStr.length(), outStr.length()));
} else {
for (int i = 0; i < cmpStr.length(); i++) {
if (cmpStr.charAt(i) != outStr.charAt(i)) {
int l = Math.max(0, i - 10);
int r = Math.min(cmpStr.length(), i + 10);
if (compareResult != null && currentPath != null) {
currentPath.pushOffsetToPath(i);
compareResult.addError(currentPath, String.format("PdfString. Characters differ at position %s. Expected: %s (%s). Found: %s (%s).",
i, Character.toString(cmpStr.charAt(i)), cmpStr.substring(l, r).replace("\n", "\\n"),
Character.toString(outStr.charAt(i)), outStr.substring(l, r).replace("\n", "\\n")));
currentPath.pop();
}
break;
}
}
}
return false;
}
}
public boolean compareLiterals(PdfLiteral outLiteral, PdfLiteral cmpLiteral) {
return Arrays.equals(cmpLiteral.getBytes(), outLiteral.getBytes());
}
private boolean compareLiteralsExtended(PdfLiteral outLiteral, PdfLiteral cmpLiteral, ObjectPath currentPath, CompareResult compareResult) {
if (compareLiterals(outLiteral, cmpLiteral)) {
return true;
} else {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format(
"PdfLiteral. Expected: %s. Found: %s", cmpLiteral, outLiteral));
return false;
}
}
public boolean compareBooleans(PdfBoolean outBoolean, PdfBoolean cmpBoolean) {
return Arrays.equals(cmpBoolean.getBytes(), outBoolean.getBytes());
}
private boolean compareBooleansExtended(PdfBoolean outBoolean, PdfBoolean cmpBoolean, ObjectPath currentPath, CompareResult compareResult) {
if (cmpBoolean.booleanValue() == outBoolean.booleanValue()) {
return true;
} else {
if (compareResult != null && currentPath != null)
compareResult.addError(currentPath, String.format("PdfBoolean. Expected: %s. Found: %s.", cmpBoolean.booleanValue(), outBoolean.booleanValue()));
return false;
}
}
public String compareXmp(byte[] xmp1, byte[] xmp2) {
return compareXmp(xmp1, xmp2, false);
}
public String compareXmp(byte[] xmp1, byte[] xmp2, boolean ignoreDateAndProducerProperties) {
try {
if (ignoreDateAndProducerProperties) {
XMPMeta xmpMeta = XMPMetaFactory.parseFromBuffer(xmp1);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_XMP, XmpBasicProperties.CREATEDATE, true, true);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_XMP, XmpBasicProperties.MODIFYDATE, true, true);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_XMP, XmpBasicProperties.METADATADATE, true, true);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_PDF, PdfProperties.PRODUCER, true, true);
xmp1 = XMPMetaFactory.serializeToBuffer(xmpMeta, new SerializeOptions(SerializeOptions.SORT));
xmpMeta = XMPMetaFactory.parseFromBuffer(xmp2);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_XMP, XmpBasicProperties.CREATEDATE, true, true);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_XMP, XmpBasicProperties.MODIFYDATE, true, true);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_XMP, XmpBasicProperties.METADATADATE, true, true);
XMPUtils.removeProperties(xmpMeta, XMPConst.NS_PDF, PdfProperties.PRODUCER, true, true);
xmp2 = XMPMetaFactory.serializeToBuffer(xmpMeta, new SerializeOptions(SerializeOptions.SORT));
}
if (!compareXmls(xmp1, xmp2)) {
return "The XMP packages different!";
}
} catch (XMPException xmpExc) {
return "XMP parsing failure!";
} catch (IOException ioExc) {
return "XMP parsing failure!";
} catch (ParserConfigurationException parseExc) {
return "XMP parsing failure!";
} catch (SAXException parseExc) {
return "XMP parsing failure!";
}
return null;
}
public String compareXmp(String outPdf, String cmpPdf) {
return compareXmp(outPdf, cmpPdf, false);
}
public String compareXmp(String outPdf, String cmpPdf, boolean ignoreDateAndProducerProperties) {
init(outPdf, cmpPdf);
PdfReader cmpReader = null;
PdfReader outReader = null;
try {
cmpReader = new PdfReader(this.cmpPdf);
outReader = new PdfReader(this.outPdf);
byte[] cmpBytes = cmpReader.getMetadata(), outBytes = outReader.getMetadata();
return compareXmp(cmpBytes, outBytes, ignoreDateAndProducerProperties);
} catch (IOException e) {
return "XMP parsing failure!";
}
finally {
if (cmpReader != null)
cmpReader.close();
if (outReader != null)
outReader.close();
}
}
public boolean compareXmls(byte[] xml1, byte[] xml2) throws ParserConfigurationException, SAXException, IOException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setCoalescing(true);
dbf.setIgnoringElementContentWhitespace(true);
dbf.setIgnoringComments(true);
DocumentBuilder db = dbf.newDocumentBuilder();
db.setEntityResolver(new SafeEmptyEntityResolver());
org.w3c.dom.Document doc1 = db.parse(new ByteArrayInputStream(xml1));
doc1.normalizeDocument();
org.w3c.dom.Document doc2 = db.parse(new ByteArrayInputStream(xml2));
doc2.normalizeDocument();
return doc2.isEqualNode(doc1);
}
public String compareDocumentInfo(String outPdf, String cmpPdf) throws IOException {
System.out.print("[itext] INFO Comparing document info.......");
String message = null;
PdfReader outReader = new PdfReader(outPdf);
PdfReader cmpReader = new PdfReader(cmpPdf);
String[] cmpInfo = convertInfo(cmpReader.getInfo());
String[] outInfo = convertInfo(outReader.getInfo());
for (int i = 0; i < cmpInfo.length; ++i) {
if (!cmpInfo[i].equals(outInfo[i])){
message = "Document info fail";
break;
}
}
outReader.close();
cmpReader.close();
if (message == null)
System.out.println("OK");
else
System.out.println("Fail");
System.out.flush();
return message;
}
private boolean linksAreSame(PdfAnnotation.PdfImportedLink cmpLink, PdfAnnotation.PdfImportedLink outLink) {
// Compare link boxes, page numbers the links refer to, and simple parameters (non-indirect, non-arrays, non-dictionaries)
if (cmpLink.getDestinationPage() != outLink.getDestinationPage())
return false;
if (!cmpLink.getRect().toString().equals(outLink.getRect().toString()))
return false;
Map cmpParams = cmpLink.getParameters();
Map outParams = outLink.getParameters();
if (cmpParams.size() != outParams.size())
return false;
for (Map.Entry cmpEntry : cmpParams.entrySet()) {
PdfObject cmpObj = cmpEntry.getValue();
if (!outParams.containsKey(cmpEntry.getKey()))
return false;
PdfObject outObj = outParams.get(cmpEntry.getKey());
if (cmpObj.type() != outObj.type())
return false;
switch (cmpObj.type()) {
case PdfObject.NULL:
case PdfObject.BOOLEAN:
case PdfObject.NUMBER:
case PdfObject.STRING:
case PdfObject.NAME:
if (!cmpObj.toString().equals(outObj.toString()))
return false;
break;
}
}
return true;
}
public String compareLinks(String outPdf, String cmpPdf) throws IOException {
System.out.print("[itext] INFO Comparing link annotations....");
String message = null;
PdfReader outReader = new PdfReader(outPdf);
PdfReader cmpReader = new PdfReader(cmpPdf);
for (int i = 0; i < outReader.getNumberOfPages() && i < cmpReader.getNumberOfPages(); i++) {
List outLinks = outReader.getLinks(i + 1);
List cmpLinks = cmpReader.getLinks(i + 1);
if (cmpLinks.size() != outLinks.size()) {
message = String.format("Different number of links on page %d.", i + 1);
break;
}
for (int j = 0; j < cmpLinks.size(); j++) {
if (!linksAreSame(cmpLinks.get(j), outLinks.get(j))) {
message = String.format("Different links on page %d.\n%s\n%s", i + 1, cmpLinks.get(j).toString(), outLinks.get(j).toString());
break;
}
}
}
outReader.close();
cmpReader.close();
if (message == null)
System.out.println("OK");
else
System.out.println("Fail");
System.out.flush();
return message;
}
public String compareTagStructures(String outPdf, String cmpPdf) throws IOException, ParserConfigurationException, SAXException {
System.out.print("[itext] INFO Comparing tag structures......");
String outXml = outPdf.replace(".pdf", ".xml");
String cmpXml = outPdf.replace(".pdf", ".cmp.xml");
String message = null;
PdfReader reader = new PdfReader(outPdf);
FileOutputStream xmlOut1 = new FileOutputStream(outXml);
new CmpTaggedPdfReaderTool().convertToXml(reader, xmlOut1);
reader.close();
reader = new PdfReader(cmpPdf);
FileOutputStream xmlOut2 = new FileOutputStream(cmpXml);
new CmpTaggedPdfReaderTool().convertToXml(reader, xmlOut2);
reader.close();
if (!compareXmls(outXml, cmpXml)) {
message = "The tag structures are different.";
}
xmlOut1.close();
xmlOut2.close();
if (message == null)
System.out.println("OK");
else
System.out.println("Fail");
System.out.flush();
return message;
}
private String[] convertInfo(HashMap info){
String[] convertedInfo = new String[]{"","","",""} ;
for(Map.Entry entry : info.entrySet()){
if (Meta.TITLE.equalsIgnoreCase(entry.getKey())){
convertedInfo[0] = entry.getValue();
} else if (Meta.AUTHOR.equalsIgnoreCase(entry.getKey())){
convertedInfo[1] = entry.getValue();
} else if (Meta.SUBJECT.equalsIgnoreCase(entry.getKey())){
convertedInfo[2] = entry.getValue();
} else if (Meta.KEYWORDS.equalsIgnoreCase(entry.getKey())){
convertedInfo[3] = entry.getValue();
}
}
return convertedInfo;
}
public boolean compareXmls(String xml1, String xml2) throws ParserConfigurationException, SAXException, IOException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setCoalescing(true);
dbf.setIgnoringElementContentWhitespace(true);
dbf.setIgnoringComments(true);
DocumentBuilder db = dbf.newDocumentBuilder();
db.setEntityResolver(new SafeEmptyEntityResolver());
org.w3c.dom.Document doc1 = db.parse(new File(xml1));
doc1.normalizeDocument();
org.w3c.dom.Document doc2 = db.parse(new File(xml2));
doc2.normalizeDocument();
return doc2.isEqualNode(doc1);
}
private void init(String outPdf, String cmpPdf) {
this.outPdf = outPdf;
this.cmpPdf = cmpPdf;
outPdfName = new File(outPdf).getName();
cmpPdfName = new File(cmpPdf).getName();
outImage = outPdfName + "-%03d.png";
if (cmpPdfName.startsWith("cmp_")) cmpImage = cmpPdfName + "-%03d.png";
else cmpImage = "cmp_" + cmpPdfName + "-%03d.png";
}
private boolean compareStreams(InputStream is1, InputStream is2) throws IOException {
byte[] buffer1 = new byte[64 * 1024];
byte[] buffer2 = new byte[64 * 1024];
int len1;
int len2;
for (; ;) {
len1 = is1.read(buffer1);
len2 = is2.read(buffer2);
if (len1 != len2)
return false;
if (!Arrays.equals(buffer1, buffer2))
return false;
if (len1 == -1)
break;
}
return true;
}
class PngFileFilter implements FileFilter {
public boolean accept(File pathname) {
String ap = pathname.getAbsolutePath();
boolean b1 = ap.endsWith(".png");
boolean b2 = ap.contains("cmp_");
return b1 && !b2 && ap.contains(outPdfName);
}
}
class CmpPngFileFilter implements FileFilter {
public boolean accept(File pathname) {
String ap = pathname.getAbsolutePath();
boolean b1 = ap.endsWith(".png");
boolean b2 = ap.contains("cmp_");
return b1 && b2 && ap.contains(cmpPdfName);
}
}
class ImageNameComparator implements Comparator {
public int compare(File f1, File f2) {
String f1Name = f1.getAbsolutePath();
String f2Name = f2.getAbsolutePath();
return f1Name.compareTo(f2Name);
}
}
class CmpTaggedPdfReaderTool extends TaggedPdfReaderTool {
Map > parsedTags = new HashMap>();
@Override
public void parseTag(String tag, PdfObject object, PdfDictionary page)
throws IOException {
if (object instanceof PdfNumber) {
if (!parsedTags.containsKey(page)) {
CmpMarkedContentRenderFilter listener = new CmpMarkedContentRenderFilter();
PdfContentStreamProcessor processor = new PdfContentStreamProcessor(
listener);
processor.processContent(PdfReader.getPageContent(page), page
.getAsDict(PdfName.RESOURCES));
parsedTags.put(page, listener.getParsedTagContent());
}
String tagContent = "";
if (parsedTags.get(page).containsKey(((PdfNumber) object).intValue()))
tagContent = parsedTags.get(page).get(((PdfNumber) object).intValue());
out.print(XMLUtil.escapeXML(tagContent, true));
} else {
super.parseTag(tag, object, page);
}
}
@Override
public void inspectChildDictionary(PdfDictionary k) throws IOException {
inspectChildDictionary(k, true);
}
}
class CmpMarkedContentRenderFilter implements RenderListener {
Map tagsByMcid = new HashMap();
public Map getParsedTagContent() {
Map content = new HashMap();
for (int id : tagsByMcid.keySet()) {
content.put(id, tagsByMcid.get(id).getResultantText());
}
return content;
}
public void beginTextBlock() {
for (int id : tagsByMcid.keySet()) {
tagsByMcid.get(id).beginTextBlock();
}
}
public void renderText(TextRenderInfo renderInfo) {
Integer mcid = renderInfo.getMcid();
if (mcid != null && tagsByMcid.containsKey(mcid)) {
tagsByMcid.get(mcid).renderText(renderInfo);
}
else if (mcid != null) {
tagsByMcid.put(mcid, new SimpleTextExtractionStrategy());
tagsByMcid.get(mcid).renderText(renderInfo);
}
}
public void endTextBlock() {
for (int id : tagsByMcid.keySet()) {
tagsByMcid.get(id).endTextBlock();
}
}
public void renderImage(ImageRenderInfo renderInfo) {
}
}
private static class SafeEmptyEntityResolver implements EntityResolver {
public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
return new InputSource(new StringReader(""));
}
}
}
