Example usage for com.itextpdf.text.pdf PdfArray getAsStream

Introduction

In this page you can find the example usage for com.itextpdf.text.pdf PdfArray getAsStream.

Prototype

public PdfStream getAsStream(final int idx) 

Source Link

Document

Returns a PdfObject as a PdfStream, resolving indirect references.

Usage

From source file:com.poet.ar.remover.AnnotationRemover.java

/**
 * remove content that matches keywords/*from w w  w.j  a v a 2 s .c o  m*/
 *
 * @param page
 * @return count of removed content
 */
private static int doRemoveContent(PdfDictionary page) {

    // all contents in page i
    PdfArray contentArray = page.getAsArray(PdfName.CONTENTS);
    PdfDictionary resources = page.getAsDict(PdfName.RESOURCES);
    List<Integer> willRemovedIx = new ArrayList<Integer>();

    if (contentArray != null) {

        PdfStream stream = null;
        for (int i = 0; i < contentArray.size(); i++) {

            stream = contentArray.getAsStream(i);

            PRStream pr = (PRStream) stream;

            // TODO // FIXME: 2016/1/27 0027 java.lang.ClassCastException: com.itextpdf.text.pdf.PdfArray cannot be cast to com.itextpdf.text.pdf.PdfLiteral
            // get display text
            //                String text = StreamContentExtractor.extractFromPdfStream(stream, resources);
            //
            //                if (keywords.contains(text)) {
            //                    willRemovedIx.add(i);
            //                }

            try {
                String text = StreamContentExtractor.extractFromPdfStream(stream, resources);

                if (keywords.contains(text)) {
                    willRemovedIx.add(i);
                }
            } catch (Exception ex) {
            }

        }

        int i = 0;
        for (Integer ix : willRemovedIx) {
            contentArray.remove(ix - i++);
        }
    }

    return willRemovedIx.size();
}

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