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/*
* This file is part of the pdftk port to java
*
* Copyright (c) Marc Vinyals 2017-2020
*
* The program is a java port of PDFtk, the PDF Toolkit
* Copyright (c) 2003-2013 Steward and Lee, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* The 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.gitlab.pdftk_java;
import com.gitlab.pdftk_java.com.lowagie.text.Document;
import com.gitlab.pdftk_java.com.lowagie.text.DocumentException;
import com.gitlab.pdftk_java.com.lowagie.text.pdf.PdfCopy;
import com.gitlab.pdftk_java.com.lowagie.text.pdf.PdfDictionary;
import com.gitlab.pdftk_java.com.lowagie.text.pdf.PdfImportedPage;
import com.gitlab.pdftk_java.com.lowagie.text.pdf.PdfName;
import com.gitlab.pdftk_java.com.lowagie.text.pdf.PdfObject;
import com.gitlab.pdftk_java.com.lowagie.text.pdf.PdfReader;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.IllegalFormatException;
class burst {
TK_Session session;
String m_output_filename;
InputPdf m_input_pdf;
boolean m_output_utf8_b;
burst(TK_Session session) {
this.session = session;
m_output_filename = session.m_output_filename;
// grab the first reader, since there's only one
m_input_pdf = session.m_input_pdf.get(0);
m_output_utf8_b = session.m_output_utf8_b;
}
// burst input into pages
ErrorCode create_output_burst() throws DocumentException, IOException {
ErrorCode ret_val = ErrorCode.NO_ERROR;
PdfReader input_reader_p = m_input_pdf.m_readers.get(0).second;
int input_num_pages = m_input_pdf.m_num_pages;
if (m_output_filename.equals("PROMPT")) {
m_output_filename =
pdftk.prompt_for_filename(
"Please enter a filename pattern for the PDF pages (e.g. pg_%04d.pdf):");
}
try {
String s1 = String.format(m_output_filename, 1);
String s2 = String.format(m_output_filename, 2);
if (s1.equals(s2)) {
m_output_filename += "pg_%04d.pdf";
String.format(m_output_filename, 1);
}
} catch (IllegalFormatException e) {
System.err.println("Error: Invalid output pattern:");
System.err.println(" " + m_output_filename);
return ErrorCode.ERROR;
}
// locate the input PDF Info dictionary that holds metadata
PdfDictionary input_info_p = null;
{
PdfDictionary input_trailer_p = input_reader_p.getTrailer();
if (input_trailer_p != null) {
PdfObject input_info_po = input_reader_p.getPdfObject(input_trailer_p.get(PdfName.INFO));
if (input_info_po != null && input_info_po.isDictionary()) {
// success
input_info_p = (PdfDictionary) input_info_po;
}
}
}
for (int ii = 0; ii < input_num_pages; ++ii) {
// the filename
String output_filename_p = String.format(m_output_filename, ii + 1);
OutputStream ofs_p = pdftk.get_output_stream_file(output_filename_p, false, false);
if (ofs_p == null) {
ret_val = ErrorCode.PARTIAL;
continue;
}
Document output_doc_p = new Document();
PdfCopy writer_p = new PdfCopy(output_doc_p, ofs_p);
session.prepare_writer(writer_p);
output_doc_p.addCreator(TK_Session.creator);
output_doc_p.open(); // must open writer before copying (possibly) indirect object
// Call setFromReader() after open(),
// otherwise topPageParent is not properly set.
// See https://gitlab.com/pdftk-java/pdftk/issues/18
writer_p.setFromReader(input_reader_p);
{ // copy the Info dictionary metadata
if (input_info_p != null) {
PdfDictionary writer_info_p = writer_p.getInfo();
if (writer_info_p != null) {
PdfDictionary info_copy_p = writer_p.copyDictionary(input_info_p);
if (info_copy_p != null) {
writer_info_p.putAll(info_copy_p);
}
}
}
byte[] input_reader_xmp_p = input_reader_p.getMetadata();
if (input_reader_xmp_p != null) {
writer_p.setXmpMetadata(input_reader_xmp_p);
}
}
PdfImportedPage page_p = writer_p.getImportedPage(input_reader_p, ii + 1);
writer_p.addPage(page_p);
output_doc_p.close();
writer_p.close();
}
////
// dump document data
String doc_data_fn = "doc_data.txt";
int loc = m_output_filename.lastIndexOf(File.separatorChar);
if (loc >= 0) {
doc_data_fn = m_output_filename.substring(0, loc) + File.separatorChar + doc_data_fn;
}
try {
PrintStream ofs = pdftk.get_print_stream(doc_data_fn, m_output_utf8_b);
report.ReportOnPdf(ofs, input_reader_p, m_output_utf8_b);
} catch (IOException e) { // error
System.err.println("Error: unable to open file for output: doc_data.txt");
ret_val = ErrorCode.PARTIAL;
}
return ret_val;
}
}
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