package er.pdf.components;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import com.webobjects.appserver.WOContext;
import com.webobjects.appserver.WOResponse;
import com.webobjects.foundation.NSData;
import com.webobjects.foundation.NSForwardException;
import com.webobjects.foundation.NSMutableArray;
import er.extensions.components.ERXStatelessComponent;
import er.extensions.foundation.ERXProperties;
/**
* ERPDF2PS will render the containing PDF content as a Postscript document suitable for printing.
* You must have the pdftops binary from xPDF / Poppler installed. The path to the binary is
* configured using the er.pdf.pdftops system property and defaults to /usr/local/bin/pdftops if
* not set.
* This is intended to be used as a wrapper around ERPDFWrapper
*
* @binding enabled
* @binding duplex
*
* @author q
*/
public class ERPDF2PS extends ERXStatelessComponent {
/**
* Do I need to update serialVersionUID?
* See section 5.6 <cite>Type Changes Affecting Serialization</cite> on page 51 of the
* <a href="http://java.sun.com/j2se/1.4/pdf/serial-spec.pdf">Java Object Serialization Spec</a>
*/
private static final long serialVersionUID = 1L;
public static final String PDF_TO_PS_KEY = "er.pdf.pdftops";
private String pdftops = ERXProperties.stringForKeyWithDefault(PDF_TO_PS_KEY, "/usr/local/bin/pdftops");
public ERPDF2PS(WOContext context) {
super(context);
}
public boolean duplex() {
return booleanValueForBinding("duplex", false);
}
public boolean enabled() {
return booleanValueForBinding("enabled", true);
}
@Override
public void appendToResponse(WOResponse response, WOContext aContext) {
super.appendToResponse(response, aContext);
if (enabled()) {
File tempFile = null;
File psFile = null;
try {
NSData content = response.content();
tempFile = File.createTempFile("pdftops", "pdf");
tempFile.deleteOnExit();
psFile = File.createTempFile("pdftops", "ps");
psFile.deleteOnExit();
NSMutableArray<String> array = new NSMutableArray<String>(pdftops, "-expand", tempFile.getPath(), psFile.getPath());
if (duplex()) {
array.add(1, "-duplex");
}
content.writeToStream(new FileOutputStream(tempFile));
Process process = Runtime.getRuntime().exec(array.toArray(new String[array.size()]));
process.waitFor();
NSData data = new NSData(new FileInputStream(psFile), 4096);
String header = response.headerForKey("content-disposition");
response.setHeader(header.replace(".pdf", ".ps"), "content-disposition");
response.setHeader("application/postscript", "Content-Type");
response.setHeader(String.valueOf(data.length()), "Content-Length");
response.setContent(data);
} catch (FileNotFoundException e) {
throw NSForwardException._runtimeExceptionForThrowable(e);
} catch (IOException e) {
throw NSForwardException._runtimeExceptionForThrowable(e);
} catch (InterruptedException e) {
throw NSForwardException._runtimeExceptionForThrowable(e);
} finally {
if (tempFile != null) {
try {
tempFile.delete();
} catch (SecurityException e) {
e.printStackTrace();
}
}
if (psFile != null) {
try {
psFile.delete();
} catch (SecurityException e) {
e.printStackTrace();
}
}
}
}
}
@Override
public boolean clickToOpenEnabled(WOResponse response, WOContext context) {
return false;
}
}