public void alterContents() throws IOException {
if (over == null && under == null) return;
PdfArray ar = null;
PdfObject content = PdfReader.getPdfObject(pageN.get(PdfName.CONTENTS), pageN);
if (content == null) {
ar = new PdfArray();
pageN.put(PdfName.CONTENTS, ar);
} else if (content.isArray()) {
ar = (PdfArray) content;
} else if (content.isStream()) {
ar = new PdfArray();
ar.add(pageN.get(PdfName.CONTENTS));
pageN.put(PdfName.CONTENTS, ar);
} else {
ar = new PdfArray();
pageN.put(PdfName.CONTENTS, ar);
}
ByteBuffer out = new ByteBuffer();
if (under != null) {
out.append(PdfContents.SAVESTATE);
applyRotation(pageN, out);
out.append(under.getInternalBuffer());
out.append(PdfContents.RESTORESTATE);
}
if (over != null) out.append(PdfContents.SAVESTATE);
PdfStream stream = new PdfStream(out.toByteArray());
stream.flateCompress(cstp.getCompressionLevel());
PdfIndirectReference ref1 = cstp.addToBody(stream).getIndirectReference();
ar.addFirst(ref1);
out.reset();
if (over != null) {
out.append(' ');
out.append(PdfContents.RESTORESTATE);
out.append(PdfContents.SAVESTATE);
applyRotation(pageN, out);
out.append(over.getInternalBuffer());
out.append(PdfContents.RESTORESTATE);
stream = new PdfStream(out.toByteArray());
stream.flateCompress(cstp.getCompressionLevel());
ar.add(cstp.addToBody(stream).getIndirectReference());
}
pageN.put(PdfName.RESOURCES, pageResources.getResources());
}
public static PdfObject createInfoId(byte id[]) {
ByteBuffer buf = new ByteBuffer(90);
buf.append('[').append('<');
for (int k = 0; k < 16; ++k) buf.appendHex(id[k]);
buf.append('>').append('<');
id = createDocumentId();
for (int k = 0; k < 16; ++k) buf.appendHex(id[k]);
buf.append('>').append(']');
return new PdfLiteral(buf.toByteArray());
}
/**
* Constructs a new <CODE>PdfName</CODE>.
*
* @param name the new name
* @param lengthCheck if <CODE>true</CODE> check the lenght validity, if <CODE>false</CODE> the
* name can have any length
*/
public PdfDicString(String name, boolean lengthCheck) {
super(PdfObject.NAME);
// The minimum number of characters in a name is 0, the maximum is 127 (the '/' not included)
int length = name.length();
// if (lengthCheck && length > 127) {
// throw new IllegalArgumentException("The name '" + name + "' is too long (" + length + "
// characters).");
// }
// The name has to be checked for illegal characters
// every special character has to be substituted
ByteBuffer pdfName = new ByteBuffer(length + 20);
char character;
char chars[] = name.toCharArray();
// loop over all the characters
for (int index = 0; index < length; index++) {
character = (char) (chars[index] & 0xff);
pdfName.append(character);
}
bytes = pdfName.toByteArray();
}
