/*
 * Dump block information from an existing PDF document.
 *
 * Required software: PDFlib+PDI/PPS 9
 * Required data: PDF input file
 */

package com.pdflib.cookbook.pdflib.blocks;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
import java.util.Locale;

public class dump_block_properties {
    static String getProperty(pdflib p, int doc, String info)
            throws PDFlibException {
        String output = "";
        String objtype = p.pcos_get_string(doc, "type:" + info);
        if (objtype.equals("name") || objtype.equals("string")
                || objtype.equals("boolean")) {
            output += p.pcos_get_string(doc, info);
        } else if (objtype.equals("number")) {
            output += String.format("%.2f", p.pcos_get_number(doc, info));
        } else if (objtype.equals("array")) {
            output += getArrayPropertyAsString(p, doc, info);
        } else if (objtype.equals("dict")) {
            output += getDictPropertyAsString(p, doc, info);
        } else {
            output += "[ " + info + "unknown type (" + objtype + ")]";
        }
        return output;
    }

    static String getDictPropertyAsString(pdflib p, int doc, String path)
            throws PDFlibException {
        String output = "";
        int length = (int) p.pcos_get_number(doc, "length:" + path);
        for (int i = 0; i < length; i++) {
            String info = path + "[" + i + "].key";
            String key = p.pcos_get_string(doc, info);
            output += key + " [";
            info = path + "[" + i + "]";
            output += getProperty(p, doc, info);
            output += "] ";
        }
        return "[ " + output + "]";
    }

    static String getArrayPropertyAsString(pdflib p, int doc, String path)
            throws PDFlibException {
        String output = "";
        int length = (int) p.pcos_get_number(doc, "length:" + path);
        for (int i = 0; i < length; i++) {
            String info = path + "[" + i + "]";
            output += getProperty(p, doc, info);
            output += " ";
        }
        return "[ " + output + "]";
    }

    public static void main(String argv[]) {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String pdfinput = "announcement_blocks.pdf";
        String docoptlist = "requiredmode=minimum";

        pdflib p = null;

        int exitcode = 0;
        Locale.setDefault(Locale.US); 

        try {
            String title = "Block properties for \"" + pdfinput + "\":";
            System.out.println(title);
            System.out.println();

            p = new pdflib();

            p.set_option("searchpath={" + searchpath + "}");

            /* This means we must check return values of load_font() etc. */
            p.set_option("errorpolicy=return");

            /*
             * We do not create any output document, so no call to
             * begin_document() is required.
             */

            /* Open the input document */
            int doc = p.open_pdi_document(pdfinput, docoptlist);
            if (doc == -1) {
                throw new Exception("Error: " + p.get_errmsg());
            }

            int pagecount = (int) p.pcos_get_number(doc, "length:pages");
            for (int page = 0; page < pagecount; page++) {

                int count = (int) p.pcos_get_number(doc,
                        "length:pages[" + page + "]/blocks");

                for (int i = 0; i < count; i++) {
                    String info = "type:pages[" + page + "]/blocks[" + i + "]";
                    String objtype = p.pcos_get_string(doc, info);

                    info = "pages[" + page + "]/blocks[" + i + "].key";
                    String key = p.pcos_get_string(doc, info);
                    System.out.println(key + ":");

                    String pcospath = "pages[" + page + "]/blocks/" + key;
                    int length = (int) p.pcos_get_number(doc,
                            "length:" + pcospath);
                    for (int j = 0; j < length; j++) {
                        info = pcospath + "[" + j + "].key";
                        key = p.pcos_get_string(doc, info);
                        String blockproppath = pcospath + "/" + key;
                        objtype = p.pcos_get_string(doc,
                                "type:" + blockproppath);
                        System.out.print("  " + objtype + "(" + blockproppath
                                + "\t" + key + "\t");
                        System.out.println(getProperty(p, doc, blockproppath) + ")");
                    }

                    System.out.println();
                }
            }

            p.close_pdi_document(doc);

        } catch (PDFlibException e) {
            System.err.println("PDFlib exception occurred:");
            System.err.println("[" + e.get_errnum() + "] " + e.get_apiname()
                    + ": " + e.get_errmsg());
            exitcode = 1;
        } catch (Exception e) {
            System.err.println(e);
            exitcode = 1;
        } finally {
            if (p != null) {
                p.delete();
            }
            System.exit(exitcode);
        }
    }
}