MIRROR of scsreader.sourceforge.net -- SCS Reader is an OSGI compatible Java library which is able to read, parse and transform SCS (SNA Character String) data streams. The implementation also offers some converters to transform such streams into Text, PDF, RTF or other formats.
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SCS Reader - Documentation

Abstract

SCS Reader is an OSGI compatible Java library which is able to read, parse and transform SCS (SNA Character String) data streams. The implementation also offers some converters to transform such streams into Text, PDF, RTF or other formats. At the current state it supports all features of the SCS 5256 printer standard.

Usage

This project is designed to be an easy drop in replacement for projects with existing PDF view or export functionality. The implementation design was inspired by the Java™ Streaming API for XML Thus it’s fast and very flexible. Additionally, one main difference to any other implementation in this area is the fact, that the SCS data streams pretty soon are converted to Unicode and further processing is all done in unicode. Therefore it’s worthwhile to use this library in multilingual environments.

Example Text-Printer

import java.io.File;
import java.io.FileWriter;

import net.scs.reader.EndOfFileSignal;
import net.scs.reader.IPrinterMicroCommand;
import net.scs.reader.IScsDataProvider;
import net.scs.reader.ReaderConfig;
import net.scs.reader.SCSStreamReader;
import net.scs.reader.dataprovider.As400ScsDataProviderFactory;
import net.scs.reader.virtualprinter.PrinterConfig;
import net.scs.reader.virtualprinter.TextPrinter;

import com.ibm.as400.access.SpooledFile;

public class ExampleTextPrinter {

	public static void main(String[] args) throws Exception {
		SpooledFile spooledFile = null; // TODO: provide your spool file!                                 (1)
		final IScsDataProvider dp = As400ScsDataProviderFactory.getPrintObjectDataProvider(spooledFile);
		final ReaderConfig rcfg = new ReaderConfig.Builder()
				.collectPrintableChars(true)
				.ignoreUnknownControlCodes(false)
				.ignoreNulls(false)
				.getConfig();
		final SCSStreamReader reader = new SCSStreamReader(dp, rcfg);

		PrinterConfig pcfg = PrinterConfig.getDefault();
		TextPrinter printer = new TextPrinter(pcfg);

		try {
			while (reader.hasNext()) {
				final IPrinterMicroCommand event = reader.next();
				if (event == null) break;
				printer.runMicroCommand(event);
			}
		} catch (EndOfFileSignal e) {
			System.out.println("eof.");
		}

		printer.finish();

		FileWriter fw = new FileWriter(new File("test.txt"));
		printer.writeText(fw);
		fw.close();
	}
}
  1. provide your spooled file here

Example PDF-Printer

import java.io.FileOutputStream;

import net.scs.reader.EndOfFileSignal;
import net.scs.reader.IPrinterMicroCommand;
import net.scs.reader.IScsDataProvider;
import net.scs.reader.ReaderConfig;
import net.scs.reader.SCSStreamReader;
import net.scs.reader.dataprovider.As400ScsDataProviderFactory;
import net.scs.reader.virtualprinter.PdfPrinter;
import net.scs.reader.virtualprinter.PrinterConfig;

import com.ibm.as400.access.SpooledFile;
import com.lowagie.text.Document;
import com.lowagie.text.Font;
import com.lowagie.text.FontFactory;
import com.lowagie.text.PageSize;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfWriter;

public class ExamplePdfPrinter {

	public static void main(String[] args) throws Exception {
		SpooledFile spooledFile = null; // TODO: provide your spool file!                                 (1)
		final IScsDataProvider dp = As400ScsDataProviderFactory.getPrintObjectDataProvider(spooledFile);
		final ReaderConfig rcfg = ReaderConfig.getDefault();
		final SCSStreamReader reader = new SCSStreamReader(dp, rcfg);

		PrinterConfig pcfg = PrinterConfig.getDefault();
		float FONT_SIZE = 9.0F;
		float leading = FONT_SIZE * 1.05F;

		// calculate font, font size, and margins for the PDF
		final Font monoSpacedFont = FontFactory.getFont(BaseFont.COURIER, FONT_SIZE);
		final Font monoSpacedFontBold = FontFactory.getFont(BaseFont.COURIER_BOLD, Font.BOLD);
		Rectangle pageSize = new Rectangle(PageSize.A4);
		final Document pdfdoc = new Document(pageSize);

		final FileOutputStream fos = new FileOutputStream("test.pdf");
		final PdfWriter pdfwriter = PdfWriter.getInstance(pdfdoc, fos);
		pdfdoc.open();

		PdfPrinter pdfprinter = new PdfPrinter(pcfg, pdfdoc, monoSpacedFont, monoSpacedFontBold, leading);

		try {
			while (reader.hasNext()) {
				final IPrinterMicroCommand event = reader.next();
				if (event == null) break;
				pdfprinter.runMicroCommand(event);
			}
		} catch (EndOfFileSignal e) {
			System.out.println("eof.");
		}

		pdfprinter.finish();
		pdfdoc.close();
		pdfwriter.close();
	}
  1. provide your spooled file here

Development

Project Setup

SCS Reader was developed using Eclipse IDE. Thus, the two plugins "net.scs.reader" and "unittest.net.scs.reader" are independent Eclipse projects.

Requirements

  • Java v1.6+

  • GIT, recommended as Eclipse-Plugin and command line tool

  • Eclipse Helios (v3.6+)

Dependencies

Note
iText newer version 5.x is not yet supported

Setup required libraries within Eclipse

  1. You have to download the required libraries

  2. Create a new java project called wrapper-req-libs

  3. Create a new folder lib within project wrapper-req-libs

  4. Copy iText.2.1.7.jar and jt400.jar into the lib folder

  5. Go to properties of the wrapper project, go to build path and go to order and export

  6. Check the two named libraries so that they get exported

  7. Right-Click the wrapper project, click Configure and click Convert to Plug-in projects

Once you’ve converted the requiered JARs into a plugin project, your workspace should be error free and you should be able to start hacking on this project.