jdk/src/solaris/classes/sun/print/UnixPrintService.java
changeset 2 90ce3da70b43
child 1727 5e5e0235b14f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/print/UnixPrintService.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,1021 @@
+/*
+ * Copyright 2000-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.print;
+
+import java.io.File;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.Locale;
+
+import javax.print.DocFlavor;
+import javax.print.DocPrintJob;
+import javax.print.PrintService;
+import javax.print.ServiceUIFactory;
+import javax.print.attribute.Attribute;
+import javax.print.attribute.AttributeSet;
+import javax.print.attribute.AttributeSetUtilities;
+import javax.print.attribute.HashAttributeSet;
+import javax.print.attribute.PrintServiceAttribute;
+import javax.print.attribute.PrintServiceAttributeSet;
+import javax.print.attribute.HashPrintServiceAttributeSet;
+import javax.print.attribute.Size2DSyntax;
+import javax.print.attribute.standard.PrinterName;
+import javax.print.attribute.standard.PrinterIsAcceptingJobs;
+import javax.print.attribute.standard.QueuedJobCount;
+import javax.print.attribute.standard.JobName;
+import javax.print.attribute.standard.JobSheets;
+import javax.print.attribute.standard.RequestingUserName;
+import javax.print.attribute.standard.Chromaticity;
+import javax.print.attribute.standard.ColorSupported;
+import javax.print.attribute.standard.Copies;
+import javax.print.attribute.standard.CopiesSupported;
+import javax.print.attribute.standard.Destination;
+import javax.print.attribute.standard.Fidelity;
+import javax.print.attribute.standard.Media;
+import javax.print.attribute.standard.MediaPrintableArea;
+import javax.print.attribute.standard.MediaSize;
+import javax.print.attribute.standard.MediaSizeName;
+import javax.print.attribute.standard.OrientationRequested;
+import javax.print.attribute.standard.PageRanges;
+import javax.print.attribute.standard.PrinterState;
+import javax.print.attribute.standard.PrinterStateReason;
+import javax.print.attribute.standard.PrinterStateReasons;
+import javax.print.attribute.standard.Severity;
+import javax.print.attribute.standard.SheetCollate;
+import javax.print.attribute.standard.Sides;
+import javax.print.event.PrintServiceAttributeListener;
+
+
+public class UnixPrintService implements PrintService, AttributeUpdater,
+                                         SunPrinterJobService {
+
+    /* define doc flavors for text types in the default encoding of
+     * this platform since we can always read those.
+     */
+    private static String encoding = "ISO8859_1";
+    private static DocFlavor textByteFlavor;
+
+    private static DocFlavor[] supportedDocFlavors = null;
+    private static final DocFlavor[] supportedDocFlavorsInit = {
+         DocFlavor.BYTE_ARRAY.POSTSCRIPT,
+         DocFlavor.INPUT_STREAM.POSTSCRIPT,
+         DocFlavor.URL.POSTSCRIPT,
+         DocFlavor.BYTE_ARRAY.GIF,
+         DocFlavor.INPUT_STREAM.GIF,
+         DocFlavor.URL.GIF,
+         DocFlavor.BYTE_ARRAY.JPEG,
+         DocFlavor.INPUT_STREAM.JPEG,
+         DocFlavor.URL.JPEG,
+         DocFlavor.BYTE_ARRAY.PNG,
+         DocFlavor.INPUT_STREAM.PNG,
+         DocFlavor.URL.PNG,
+
+         DocFlavor.CHAR_ARRAY.TEXT_PLAIN,
+         DocFlavor.READER.TEXT_PLAIN,
+         DocFlavor.STRING.TEXT_PLAIN,
+
+         DocFlavor.BYTE_ARRAY.TEXT_PLAIN_UTF_8,
+         DocFlavor.BYTE_ARRAY.TEXT_PLAIN_UTF_16,
+         DocFlavor.BYTE_ARRAY.TEXT_PLAIN_UTF_16BE,
+         DocFlavor.BYTE_ARRAY.TEXT_PLAIN_UTF_16LE,
+         DocFlavor.BYTE_ARRAY.TEXT_PLAIN_US_ASCII,
+
+
+         DocFlavor.INPUT_STREAM.TEXT_PLAIN_UTF_8,
+         DocFlavor.INPUT_STREAM.TEXT_PLAIN_UTF_16,
+         DocFlavor.INPUT_STREAM.TEXT_PLAIN_UTF_16BE,
+         DocFlavor.INPUT_STREAM.TEXT_PLAIN_UTF_16LE,
+         DocFlavor.INPUT_STREAM.TEXT_PLAIN_US_ASCII,
+
+
+         DocFlavor.URL.TEXT_PLAIN_UTF_8,
+         DocFlavor.URL.TEXT_PLAIN_UTF_16,
+         DocFlavor.URL.TEXT_PLAIN_UTF_16BE,
+         DocFlavor.URL.TEXT_PLAIN_UTF_16LE,
+         DocFlavor.URL.TEXT_PLAIN_US_ASCII,
+
+         DocFlavor.SERVICE_FORMATTED.PAGEABLE,
+         DocFlavor.SERVICE_FORMATTED.PRINTABLE,
+
+         DocFlavor.BYTE_ARRAY.AUTOSENSE,
+         DocFlavor.URL.AUTOSENSE,
+         DocFlavor.INPUT_STREAM.AUTOSENSE
+    };
+
+    private static final DocFlavor[] supportedHostDocFlavors = {
+        DocFlavor.BYTE_ARRAY.TEXT_PLAIN_HOST,
+        DocFlavor.INPUT_STREAM.TEXT_PLAIN_HOST,
+        DocFlavor.URL.TEXT_PLAIN_HOST
+    };
+
+    String[] lpcStatusCom = {
+      "",
+      "| grep -E '^[ 0-9a-zA-Z_-]*@' | awk '{print $2, $3}'"
+    };
+
+    String[] lpcQueueCom = {
+      "",
+      "| grep -E '^[ 0-9a-zA-Z_-]*@' | awk '{print $4}'"
+    };
+
+    static {
+        encoding = java.security.AccessController.doPrivileged(
+            new sun.security.action.GetPropertyAction("file.encoding"));
+    }
+
+    /* let's try to support a few of these */
+    private static final Class[] serviceAttrCats = {
+        PrinterName.class,
+        PrinterIsAcceptingJobs.class,
+        QueuedJobCount.class,
+    };
+
+    /*  it turns out to be inconvenient to store the other categories
+     *  separately because many attributes are in multiple categories.
+     */
+    private static final Class[] otherAttrCats = {
+        Chromaticity.class,
+        Copies.class,
+        Destination.class,
+        Fidelity.class,
+        JobName.class,
+        JobSheets.class,
+        Media.class, /* have to support this somehow ... */
+        MediaPrintableArea.class,
+        OrientationRequested.class,
+        PageRanges.class,
+        RequestingUserName.class,
+        SheetCollate.class,
+        Sides.class,
+    };
+
+    private static int MAXCOPIES = 1000;
+
+    private static final MediaSizeName mediaSizes[] = {
+        MediaSizeName.NA_LETTER,
+        MediaSizeName.TABLOID,
+        MediaSizeName.LEDGER,
+        MediaSizeName.NA_LEGAL,
+        MediaSizeName.EXECUTIVE,
+        MediaSizeName.ISO_A3,
+        MediaSizeName.ISO_A4,
+        MediaSizeName.ISO_A5,
+        MediaSizeName.ISO_B4,
+        MediaSizeName.ISO_B5,
+    };
+
+    private String printer;
+    private PrinterName name;
+    private boolean isInvalid;
+
+    transient private PrintServiceAttributeSet lastSet;
+    transient private ServiceNotifier notifier = null;
+
+    UnixPrintService(String name) {
+        if (name == null) {
+            throw new IllegalArgumentException("null printer name");
+        }
+        printer = name;
+        isInvalid = false;
+    }
+
+    public void invalidateService() {
+        isInvalid = true;
+    }
+
+    public String getName() {
+        return printer;
+    }
+
+    private PrinterName getPrinterName() {
+        if (name == null) {
+            name = new PrinterName(printer, null);
+        }
+        return name;
+    }
+
+    private PrinterIsAcceptingJobs getPrinterIsAcceptingJobsSysV() {
+        String command = "/usr/bin/lpstat -a " + printer;
+        String results[]= UnixPrintServiceLookup.execCmd(command);
+
+        if (results != null && results.length > 0) {
+            if (results[0].startsWith(printer + " accepting requests")) {
+                return PrinterIsAcceptingJobs.ACCEPTING_JOBS;
+            }
+            else if (results[0].startsWith(printer)) {
+                /* As well as "myprinter accepting requests", look for
+                 * "myprinter@somehost accepting requests".
+                 */
+                int index = printer.length();
+                String str = results[0];
+                if (str.length() > index &&
+                    str.charAt(index) == '@' &&
+                    str.indexOf(" accepting requests", index) > 0 &&
+                    str.indexOf(" not accepting requests", index) == -1) {
+                   return PrinterIsAcceptingJobs.ACCEPTING_JOBS;
+                }
+            }
+        }
+        return PrinterIsAcceptingJobs.NOT_ACCEPTING_JOBS ;
+    }
+
+    private PrinterIsAcceptingJobs getPrinterIsAcceptingJobsBSD() {
+        if (UnixPrintServiceLookup.cmdIndex ==
+            UnixPrintServiceLookup.UNINITIALIZED) {
+
+            UnixPrintServiceLookup.cmdIndex =
+                UnixPrintServiceLookup.getBSDCommandIndex();
+        }
+
+        String command = "/usr/sbin/lpc status " + printer
+            + lpcStatusCom[UnixPrintServiceLookup.cmdIndex];
+        String results[]= UnixPrintServiceLookup.execCmd(command);
+
+        if (results != null && results.length > 0) {
+            if (UnixPrintServiceLookup.cmdIndex ==
+                UnixPrintServiceLookup.BSD_LPD_NG) {
+                if (results[0].startsWith("enabled enabled")) {
+                    return PrinterIsAcceptingJobs.ACCEPTING_JOBS ;
+                }
+            } else {
+                if ((results[1].trim().startsWith("queuing is enabled") &&
+                    results[2].trim().startsWith("printing is enabled")) ||
+                    (results.length >= 4 &&
+                     results[2].trim().startsWith("queuing is enabled") &&
+                     results[3].trim().startsWith("printing is enabled"))) {
+                    return PrinterIsAcceptingJobs.ACCEPTING_JOBS ;
+                }
+            }
+        }
+        return PrinterIsAcceptingJobs.NOT_ACCEPTING_JOBS ;
+    }
+
+    private PrinterIsAcceptingJobs getPrinterIsAcceptingJobs() {
+        if (UnixPrintServiceLookup.isSysV()) {
+            return getPrinterIsAcceptingJobsSysV();
+        } else if (UnixPrintServiceLookup.isBSD()) {
+            return getPrinterIsAcceptingJobsBSD();
+        } else {
+            return PrinterIsAcceptingJobs.ACCEPTING_JOBS;
+        }
+    }
+
+    private PrinterState getPrinterState() {
+        if (isInvalid) {
+            return PrinterState.STOPPED;
+        } else {
+            return null;
+        }
+    }
+
+    private PrinterStateReasons getPrinterStateReasons() {
+        if (isInvalid) {
+            PrinterStateReasons psr = new PrinterStateReasons();
+            psr.put(PrinterStateReason.SHUTDOWN, Severity.ERROR);
+            return psr;
+        } else {
+            return null;
+        }
+    }
+
+    private QueuedJobCount getQueuedJobCountSysV() {
+        String command = "/usr/bin/lpstat -R " + printer;
+        String results[]= UnixPrintServiceLookup.execCmd(command);
+        int qlen = (results == null) ? 0 : results.length;
+
+        return new QueuedJobCount(qlen);
+    }
+
+    private QueuedJobCount getQueuedJobCountBSD() {
+        if (UnixPrintServiceLookup.cmdIndex ==
+            UnixPrintServiceLookup.UNINITIALIZED) {
+
+            UnixPrintServiceLookup.cmdIndex =
+                UnixPrintServiceLookup.getBSDCommandIndex();
+        }
+
+        int qlen = 0;
+        String command = "/usr/sbin/lpc status " + printer
+            + lpcQueueCom[UnixPrintServiceLookup.cmdIndex];
+        String results[] = UnixPrintServiceLookup.execCmd(command);
+
+        if (results != null && results.length > 0) {
+            String queued;
+            if (UnixPrintServiceLookup.cmdIndex ==
+                UnixPrintServiceLookup.BSD_LPD_NG) {
+                queued = results[0];
+            } else {
+                queued = results[3].trim();
+                if (queued.startsWith("no")) {
+                    return new QueuedJobCount(0);
+                } else {
+                    queued = queued.substring(0, queued.indexOf(' '));
+                }
+            }
+
+            try {
+                qlen = Integer.parseInt(queued);
+            } catch (NumberFormatException e) {
+            }
+        }
+
+        return new QueuedJobCount(qlen);
+    }
+
+    private QueuedJobCount getQueuedJobCount() {
+        if (UnixPrintServiceLookup.isSysV()) {
+            return getQueuedJobCountSysV();
+        } else if (UnixPrintServiceLookup.isBSD()) {
+            return getQueuedJobCountBSD();
+        } else {
+            return new QueuedJobCount(0);
+        }
+    }
+
+    private PrintServiceAttributeSet getSysVServiceAttributes() {
+        PrintServiceAttributeSet attrs = new HashPrintServiceAttributeSet();
+        attrs.add(getQueuedJobCountSysV());
+        attrs.add(getPrinterIsAcceptingJobsSysV());
+        return attrs;
+    }
+
+    private PrintServiceAttributeSet getBSDServiceAttributes() {
+        PrintServiceAttributeSet attrs = new HashPrintServiceAttributeSet();
+        attrs.add(getQueuedJobCountBSD());
+        attrs.add(getPrinterIsAcceptingJobsBSD());
+        return attrs;
+    }
+
+    private boolean isSupportedCopies(Copies copies) {
+        int numCopies = copies.getValue();
+        return (numCopies > 0 && numCopies < MAXCOPIES);
+    }
+
+    private boolean isSupportedMedia(MediaSizeName msn) {
+        for (int i=0; i<mediaSizes.length; i++) {
+            if (msn.equals(mediaSizes[i])) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public DocPrintJob createPrintJob() {
+      SecurityManager security = System.getSecurityManager();
+      if (security != null) {
+        security.checkPrintJobAccess();
+      }
+        return new UnixPrintJob(this);
+    }
+
+    private PrintServiceAttributeSet getDynamicAttributes() {
+        if (UnixPrintServiceLookup.isSysV()) {
+            return getSysVServiceAttributes();
+        } else {
+            return getBSDServiceAttributes();
+        }
+    }
+
+    public PrintServiceAttributeSet getUpdatedAttributes() {
+        PrintServiceAttributeSet currSet = getDynamicAttributes();
+        if (lastSet == null) {
+            lastSet = currSet;
+            return AttributeSetUtilities.unmodifiableView(currSet);
+        } else {
+            PrintServiceAttributeSet updates =
+                new HashPrintServiceAttributeSet();
+            Attribute []attrs = currSet.toArray();
+            Attribute attr;
+            for (int i=0; i<attrs.length; i++) {
+                attr = attrs[i];
+                if (!lastSet.containsValue(attr)) {
+                    updates.add(attr);
+                }
+            }
+            lastSet = currSet;
+            return AttributeSetUtilities.unmodifiableView(updates);
+        }
+    }
+
+    public void wakeNotifier() {
+        synchronized (this) {
+            if (notifier != null) {
+                notifier.wake();
+            }
+        }
+    }
+
+    public void addPrintServiceAttributeListener(
+                                 PrintServiceAttributeListener listener) {
+        synchronized (this) {
+            if (listener == null) {
+                return;
+            }
+            if (notifier == null) {
+                notifier = new ServiceNotifier(this);
+            }
+            notifier.addListener(listener);
+        }
+    }
+
+    public void removePrintServiceAttributeListener(
+                                  PrintServiceAttributeListener listener) {
+        synchronized (this) {
+            if (listener == null || notifier == null ) {
+                return;
+            }
+            notifier.removeListener(listener);
+            if (notifier.isEmpty()) {
+                notifier.stopNotifier();
+                notifier = null;
+            }
+        }
+    }
+
+    public <T extends PrintServiceAttribute>
+        T getAttribute(Class<T> category)
+    {
+        if (category == null) {
+            throw new NullPointerException("category");
+        }
+        if (!(PrintServiceAttribute.class.isAssignableFrom(category))) {
+            throw new IllegalArgumentException("Not a PrintServiceAttribute");
+        }
+
+        if (category == PrinterName.class) {
+            return (T)getPrinterName();
+        } else if (category == PrinterState.class) {
+            return (T)getPrinterState();
+        } else if (category == PrinterStateReasons.class) {
+            return (T)getPrinterStateReasons();
+        } else if (category == QueuedJobCount.class) {
+            return (T)getQueuedJobCount();
+        } else if (category == PrinterIsAcceptingJobs.class) {
+            return (T)getPrinterIsAcceptingJobs();
+        } else {
+            return null;
+        }
+    }
+
+    public PrintServiceAttributeSet getAttributes() {
+        PrintServiceAttributeSet attrs = new HashPrintServiceAttributeSet();
+        attrs.add(getPrinterName());
+        attrs.add(getPrinterIsAcceptingJobs());
+        PrinterState prnState = getPrinterState();
+        if (prnState != null) {
+            attrs.add(prnState);
+        }
+        PrinterStateReasons prnStateReasons = getPrinterStateReasons();
+        if (prnStateReasons != null) {
+            attrs.add(prnStateReasons);
+        }
+        attrs.add(getQueuedJobCount());
+        return AttributeSetUtilities.unmodifiableView(attrs);
+    }
+
+    private void initSupportedDocFlavors() {
+        String hostEnc = DocFlavor.hostEncoding.toLowerCase(Locale.ENGLISH);
+        if (!hostEnc.equals("utf-8") && !hostEnc.equals("utf-16") &&
+            !hostEnc.equals("utf-16be") && !hostEnc.equals("utf-16le") &&
+            !hostEnc.equals("us-ascii")) {
+
+            int len = supportedDocFlavorsInit.length;
+            DocFlavor[] flavors =
+                new DocFlavor[len + supportedHostDocFlavors.length];
+            // copy host encoding flavors
+            System.arraycopy(supportedHostDocFlavors, 0, flavors,
+                             len, supportedHostDocFlavors.length);
+            System.arraycopy(supportedDocFlavorsInit, 0, flavors, 0, len);
+
+            supportedDocFlavors = flavors;
+        } else {
+            supportedDocFlavors = supportedDocFlavorsInit;
+        }
+    }
+
+    public DocFlavor[] getSupportedDocFlavors() {
+        if (supportedDocFlavors == null) {
+            initSupportedDocFlavors();
+        }
+        int len = supportedDocFlavors.length;
+        DocFlavor[] flavors = new DocFlavor[len];
+        System.arraycopy(supportedDocFlavors, 0, flavors, 0, len);
+
+        return flavors;
+    }
+
+    public boolean isDocFlavorSupported(DocFlavor flavor) {
+        if (supportedDocFlavors == null) {
+            initSupportedDocFlavors();
+        }
+        for (int f=0; f<supportedDocFlavors.length; f++) {
+            if (flavor.equals(supportedDocFlavors[f])) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public Class[] getSupportedAttributeCategories() {
+        int totalCats = otherAttrCats.length;
+        Class [] cats = new Class[totalCats];
+        System.arraycopy(otherAttrCats, 0, cats, 0, otherAttrCats.length);
+        return cats;
+    }
+
+    public boolean
+        isAttributeCategorySupported(Class<? extends Attribute> category)
+    {
+        if (category == null) {
+            throw new NullPointerException("null category");
+        }
+        if (!(Attribute.class.isAssignableFrom(category))) {
+            throw new IllegalArgumentException(category +
+                                             " is not an Attribute");
+        }
+
+        for (int i=0;i<otherAttrCats.length;i++) {
+            if (category == otherAttrCats[i]) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /* return defaults for all attributes for which there is a default
+     * value
+     */
+    public Object
+        getDefaultAttributeValue(Class<? extends Attribute> category)
+    {
+        if (category == null) {
+            throw new NullPointerException("null category");
+        }
+        if (!Attribute.class.isAssignableFrom(category)) {
+            throw new IllegalArgumentException(category +
+                                             " is not an Attribute");
+        }
+
+        if (!isAttributeCategorySupported(category)) {
+            return null;
+        }
+
+        if (category == Copies.class) {
+            return new Copies(1);
+        } else if (category == Chromaticity.class) {
+            return Chromaticity.COLOR;
+        } else if (category == Destination.class) {
+            try {
+                return new Destination((new File("out.ps")).toURI());
+            } catch (SecurityException se) {
+                try {
+                    return new Destination(new URI("file:out.ps"));
+                } catch (URISyntaxException e) {
+                    return null;
+                }
+            }
+        } else if (category == Fidelity.class) {
+            return Fidelity.FIDELITY_FALSE;
+        } else if (category == JobName.class) {
+            return new JobName("Java Printing", null);
+        } else if (category == JobSheets.class) {
+            return JobSheets.STANDARD;
+        } else if (category == Media.class) {
+            String defaultCountry = Locale.getDefault().getCountry();
+            if (defaultCountry != null &&
+                (defaultCountry.equals("") ||
+                 defaultCountry.equals(Locale.US.getCountry()) ||
+                 defaultCountry.equals(Locale.CANADA.getCountry()))) {
+                return MediaSizeName.NA_LETTER;
+            } else {
+                 return MediaSizeName.ISO_A4;
+            }
+        } else if (category == MediaPrintableArea.class) {
+            String defaultCountry = Locale.getDefault().getCountry();
+            float iw, ih;
+            if (defaultCountry != null &&
+                (defaultCountry.equals("") ||
+                 defaultCountry.equals(Locale.US.getCountry()) ||
+                 defaultCountry.equals(Locale.CANADA.getCountry()))) {
+                iw = MediaSize.NA.LETTER.getX(Size2DSyntax.INCH) - 0.5f;
+                ih = MediaSize.NA.LETTER.getY(Size2DSyntax.INCH) - 0.5f;
+            } else {
+                iw = MediaSize.ISO.A4.getX(Size2DSyntax.INCH) - 0.5f;
+                ih = MediaSize.ISO.A4.getY(Size2DSyntax.INCH) - 0.5f;
+            }
+            return new MediaPrintableArea(0.25f, 0.25f, iw, ih,
+                                          MediaPrintableArea.INCH);
+        } else if (category == OrientationRequested.class) {
+            return OrientationRequested.PORTRAIT;
+        } else if (category == PageRanges.class) {
+            return new PageRanges(1, Integer.MAX_VALUE);
+        } else if (category == RequestingUserName.class) {
+            String userName = "";
+            try {
+              userName = System.getProperty("user.name", "");
+            } catch (SecurityException se) {
+            }
+            return new RequestingUserName(userName, null);
+        } else if (category == SheetCollate.class) {
+            return SheetCollate.UNCOLLATED;
+        } else if (category == Sides.class) {
+            return Sides.ONE_SIDED;
+        } else
+            return null;
+    }
+
+
+    private boolean isAutoSense(DocFlavor flavor) {
+        if (flavor.equals(DocFlavor.BYTE_ARRAY.AUTOSENSE) ||
+            flavor.equals(DocFlavor.INPUT_STREAM.AUTOSENSE) ||
+            flavor.equals(DocFlavor.URL.AUTOSENSE)) {
+            return true;
+        }
+        else {
+            return false;
+        }
+    }
+
+    public Object
+        getSupportedAttributeValues(Class<? extends Attribute> category,
+                                    DocFlavor flavor,
+                                    AttributeSet attributes)
+    {
+
+        if (category == null) {
+            throw new NullPointerException("null category");
+        }
+        if (!Attribute.class.isAssignableFrom(category)) {
+            throw new IllegalArgumentException(category +
+                                             " does not implement Attribute");
+        }
+        if (flavor != null) {
+            if (!isDocFlavorSupported(flavor)) {
+                throw new IllegalArgumentException(flavor +
+                                               " is an unsupported flavor");
+            } else if (isAutoSense(flavor)) {
+                return null;
+            }
+        }
+
+        if (!isAttributeCategorySupported(category)) {
+            return null;
+        }
+
+        if (category == Chromaticity.class) {
+            if (flavor == null ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE) ||
+                flavor.equals(DocFlavor.BYTE_ARRAY.GIF) ||
+                flavor.equals(DocFlavor.INPUT_STREAM.GIF) ||
+                flavor.equals(DocFlavor.URL.GIF) ||
+                flavor.equals(DocFlavor.BYTE_ARRAY.JPEG) ||
+                flavor.equals(DocFlavor.INPUT_STREAM.JPEG) ||
+                flavor.equals(DocFlavor.URL.JPEG) ||
+                flavor.equals(DocFlavor.BYTE_ARRAY.PNG) ||
+                flavor.equals(DocFlavor.INPUT_STREAM.PNG) ||
+                flavor.equals(DocFlavor.URL.PNG)) {
+
+                Chromaticity[]arr = new Chromaticity[1];
+                arr[0] = Chromaticity.COLOR;
+                return (arr);
+            } else {
+                return null;
+            }
+        } else if (category == Destination.class) {
+            try {
+                return new Destination((new File("out.ps")).toURI());
+            } catch (SecurityException se) {
+                try {
+                    return new Destination(new URI("file:out.ps"));
+                } catch (URISyntaxException e) {
+                    return null;
+                }
+            }
+        } else if (category == JobName.class) {
+            return new JobName("Java Printing", null);
+        } else if (category == JobSheets.class) {
+            JobSheets arr[] = new JobSheets[2];
+            arr[0] = JobSheets.NONE;
+            arr[1] = JobSheets.STANDARD;
+            return arr;
+        } else if (category == RequestingUserName.class) {
+            String userName = "";
+            try {
+              userName = System.getProperty("user.name", "");
+            } catch (SecurityException se) {
+            }
+            return new RequestingUserName(userName, null);
+        } else if (category == OrientationRequested.class) {
+            if (flavor == null ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE) ||
+                flavor.equals(DocFlavor.INPUT_STREAM.GIF) ||
+                flavor.equals(DocFlavor.INPUT_STREAM.JPEG) ||
+                flavor.equals(DocFlavor.INPUT_STREAM.PNG) ||
+                flavor.equals(DocFlavor.BYTE_ARRAY.GIF) ||
+                flavor.equals(DocFlavor.BYTE_ARRAY.JPEG) ||
+                flavor.equals(DocFlavor.BYTE_ARRAY.PNG) ||
+                flavor.equals(DocFlavor.URL.GIF) ||
+                flavor.equals(DocFlavor.URL.JPEG) ||
+                flavor.equals(DocFlavor.URL.PNG)) {
+                OrientationRequested []arr = new OrientationRequested[3];
+                arr[0] = OrientationRequested.PORTRAIT;
+                arr[1] = OrientationRequested.LANDSCAPE;
+                arr[2] = OrientationRequested.REVERSE_LANDSCAPE;
+                return arr;
+            } else {
+                return null;
+            }
+        } else if ((category == Copies.class) ||
+                   (category == CopiesSupported.class)) {
+            return new CopiesSupported(1, MAXCOPIES);
+        } else if (category == Media.class) {
+            Media []arr = new Media[mediaSizes.length];
+            System.arraycopy(mediaSizes, 0, arr, 0, mediaSizes.length);
+            return arr;
+        } else if (category == Fidelity.class) {
+            Fidelity []arr = new Fidelity[2];
+            arr[0] = Fidelity.FIDELITY_FALSE;
+            arr[1] = Fidelity.FIDELITY_TRUE;
+            return arr;
+        } else if (category == MediaPrintableArea.class) {
+            /* The code below implements the behaviour that if no Media or
+             * MediaSize attribute is specified, return an array of
+             * MediaPrintableArea, one for each supported Media.
+             * If a MediaSize is specified, return a MPA consistent for that,
+             * and if a Media is specified locate its MediaSize and return
+             * its MPA, and if none is found, return an MPA for the default
+             * Media for this service.
+             */
+            if (attributes == null) {
+                return getAllPrintableAreas();
+            }
+            MediaSize mediaSize = (MediaSize)attributes.get(MediaSize.class);
+            Media media = (Media)attributes.get(Media.class);
+            MediaPrintableArea []arr = new MediaPrintableArea[1];
+            if (mediaSize == null) {
+                if (media instanceof MediaSizeName) {
+                    MediaSizeName msn = (MediaSizeName)media;
+                    mediaSize = MediaSize.getMediaSizeForName(msn);
+                    if (mediaSize == null) {
+                        /* try to get a size from the default media */
+                        media = (Media)getDefaultAttributeValue(Media.class);
+                        if (media instanceof MediaSizeName) {
+                            msn = (MediaSizeName)media;
+                            mediaSize = MediaSize.getMediaSizeForName(msn);
+                        }
+                        if (mediaSize == null) {
+                            /* shouldn't happen, return a default */
+                            arr[0] = new MediaPrintableArea(0.25f, 0.25f,
+                                                            8f, 10.5f,
+                                                            MediaSize.INCH);
+                            return arr;
+                        }
+                    }
+                } else {
+                    return getAllPrintableAreas();
+                }
+            }
+            /* If reach here MediaSize is non-null */
+            assert mediaSize != null;
+            arr[0] = new MediaPrintableArea(0.25f, 0.25f,
+                                mediaSize.getX(MediaSize.INCH)-0.5f,
+                                mediaSize.getY(MediaSize.INCH)-0.5f,
+                                MediaSize.INCH);
+            return arr;
+        } else if (category == PageRanges.class) {
+            if (flavor == null ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE)) {
+                PageRanges []arr = new PageRanges[1];
+                arr[0] = new PageRanges(1, Integer.MAX_VALUE);
+                return arr;
+            } else {
+                return null;
+            }
+        } else if (category == SheetCollate.class) {
+            if (flavor == null ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE)) {
+                SheetCollate []arr = new SheetCollate[2];
+                arr[0] = SheetCollate.UNCOLLATED;
+                arr[1] = SheetCollate.COLLATED;
+                return arr;
+            } else {
+                return null;
+            }
+        } else if (category == Sides.class) {
+            if (flavor == null ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE)) {
+                Sides []arr = new Sides[3];
+                arr[0] = Sides.ONE_SIDED;
+                arr[1] = Sides.TWO_SIDED_LONG_EDGE;
+                arr[2] = Sides.TWO_SIDED_SHORT_EDGE;
+                return arr;
+            } else {
+                return null;
+            }
+        } else {
+            return null;
+        }
+    }
+
+    private static MediaPrintableArea[] mpas = null;
+    private MediaPrintableArea[] getAllPrintableAreas() {
+
+        if (mpas == null) {
+            Media[] media = (Media[])getSupportedAttributeValues(Media.class,
+                                                                 null, null);
+            mpas = new MediaPrintableArea[media.length];
+            for (int i=0; i< mpas.length; i++) {
+                if (media[i] instanceof MediaSizeName) {
+                    MediaSizeName msn = (MediaSizeName)media[i];
+                    MediaSize mediaSize = MediaSize.getMediaSizeForName(msn);
+                    if (mediaSize == null) {
+                        mpas[i] = (MediaPrintableArea)
+                            getDefaultAttributeValue(MediaPrintableArea.class);
+                    } else {
+                        mpas[i] = new MediaPrintableArea(0.25f, 0.25f,
+                                        mediaSize.getX(MediaSize.INCH)-0.5f,
+                                        mediaSize.getY(MediaSize.INCH)-0.5f,
+                                        MediaSize.INCH);
+                    }
+                }
+            }
+        }
+        MediaPrintableArea[] mpasCopy = new MediaPrintableArea[mpas.length];
+        System.arraycopy(mpas, 0, mpasCopy, 0, mpas.length);
+        return mpasCopy;
+    }
+
+    /* Is this one of the flavors that this service explicitly
+     * generates postscript for, and so can control how it is rendered?
+     */
+    private boolean isServiceFormattedFlavor(DocFlavor flavor) {
+        return
+            flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+            flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE) ||
+            flavor.equals(DocFlavor.BYTE_ARRAY.GIF) ||
+            flavor.equals(DocFlavor.INPUT_STREAM.GIF) ||
+            flavor.equals(DocFlavor.URL.GIF) ||
+            flavor.equals(DocFlavor.BYTE_ARRAY.JPEG) ||
+            flavor.equals(DocFlavor.INPUT_STREAM.JPEG) ||
+            flavor.equals(DocFlavor.URL.JPEG) ||
+            flavor.equals(DocFlavor.BYTE_ARRAY.PNG) ||
+            flavor.equals(DocFlavor.INPUT_STREAM.PNG) ||
+            flavor.equals(DocFlavor.URL.PNG);
+    }
+
+    public boolean isAttributeValueSupported(Attribute attr,
+                                             DocFlavor flavor,
+                                             AttributeSet attributes) {
+        if (attr == null) {
+            throw new NullPointerException("null attribute");
+        }
+        if (flavor != null) {
+            if (!isDocFlavorSupported(flavor)) {
+                throw new IllegalArgumentException(flavor +
+                                               " is an unsupported flavor");
+            } else if (isAutoSense(flavor)) {
+                return false;
+            }
+        }
+        Class category = attr.getCategory();
+        if (!isAttributeCategorySupported(category)) {
+            return false;
+        }
+        else if (attr.getCategory() == Chromaticity.class) {
+            if (flavor == null || isServiceFormattedFlavor(flavor)) {
+                return attr == Chromaticity.COLOR;
+            } else {
+                return false;
+            }
+        }
+        else if (attr.getCategory() == Copies.class) {
+            return
+                (flavor == null || isServiceFormattedFlavor(flavor)) &&
+                isSupportedCopies((Copies)attr);
+        } else if (attr.getCategory() == Destination.class) {
+            URI uri = ((Destination)attr).getURI();
+                if ("file".equals(uri.getScheme()) &&
+                    !(uri.getSchemeSpecificPart().equals(""))) {
+                return true;
+            } else {
+            return false;
+            }
+        } else if (attr.getCategory() == Media.class) {
+            if (attr instanceof MediaSizeName) {
+                return isSupportedMedia((MediaSizeName)attr);
+            } else {
+                return false;
+            }
+        } else if (attr.getCategory() == OrientationRequested.class) {
+            if (attr == OrientationRequested.REVERSE_PORTRAIT ||
+                (flavor != null) &&
+                !isServiceFormattedFlavor(flavor)) {
+                return false;
+            }
+        } else if (attr.getCategory() == PageRanges.class) {
+            if (flavor != null &&
+                !(flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE))) {
+                return false;
+            }
+        } else if (attr.getCategory() == SheetCollate.class) {
+            if (flavor != null &&
+                !(flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE))) {
+                return false;
+            }
+        } else if (attr.getCategory() == Sides.class) {
+            if (flavor != null &&
+                !(flavor.equals(DocFlavor.SERVICE_FORMATTED.PAGEABLE) ||
+                flavor.equals(DocFlavor.SERVICE_FORMATTED.PRINTABLE))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public AttributeSet getUnsupportedAttributes(DocFlavor flavor,
+                                                 AttributeSet attributes) {
+
+        if (flavor != null && !isDocFlavorSupported(flavor)) {
+            throw new IllegalArgumentException("flavor " + flavor +
+                                               "is not supported");
+        }
+
+        if (attributes == null) {
+            return null;
+        }
+
+        Attribute attr;
+        AttributeSet unsupp = new HashAttributeSet();
+        Attribute []attrs = attributes.toArray();
+        for (int i=0; i<attrs.length; i++) {
+            try {
+                attr = attrs[i];
+                if (!isAttributeCategorySupported(attr.getCategory())) {
+                    unsupp.add(attr);
+                } else if (!isAttributeValueSupported(attr, flavor,
+                                                      attributes)) {
+                    unsupp.add(attr);
+                }
+            } catch (ClassCastException e) {
+            }
+        }
+        if (unsupp.isEmpty()) {
+            return null;
+        } else {
+            return unsupp;
+        }
+    }
+
+    public ServiceUIFactory getServiceUIFactory() {
+        return null;
+    }
+
+    public String toString() {
+        return "Unix Printer : " + getName();
+    }
+
+    public boolean equals(Object obj) {
+        return  (obj == this ||
+                 (obj instanceof UnixPrintService &&
+                  ((UnixPrintService)obj).getName().equals(getName())));
+    }
+
+    public int hashCode() {
+        return this.getClass().hashCode()+getName().hashCode();
+    }
+
+    public boolean usesClass(Class c) {
+        return (c == sun.print.PSPrinterJob.class);
+    }
+
+}