Examples of DSCParser

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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     * @throws IOException In case of an I/O error
     */
    public static void process(FOUserAgent userAgent, InputStream in, OutputStream out,
            FontInfo fontInfo, ResourceTracker resTracker, Map formResources, int pageCount)
                    throws DSCException, IOException {
        DSCParser parser = new DSCParser(in);
        PSGenerator gen = new PSGenerator(out);
        parser.setNestedDocumentHandler(new DefaultNestedDocumentHandler(gen));
       
        //Skip DSC header
        DSCHeaderComment header = DSCTools.checkAndSkipDSC30Header(parser);
        header.generate(gen);
       
        parser.setFilter(new DSCFilter() {
            private final Set filtered = new java.util.HashSet();
            {
                //We rewrite those as part of the processing
                filtered.add(DSCConstants.PAGES);
                filtered.add(DSCConstants.DOCUMENT_NEEDED_RESOURCES);
                filtered.add(DSCConstants.DOCUMENT_SUPPLIED_RESOURCES);
            }
            public boolean accept(DSCEvent event) {
                if (event.isDSCComment()) {
                    //Filter %%Pages which we add manually from a parameter
                    return !(filtered.contains(event.asDSCComment().getName()));
                } else {
                    return true;
                }
            }
        });

        //Get PostScript language level (may be missing)
        while (true) {
            DSCEvent event = parser.nextEvent();
            if (event == null) {
                reportInvalidDSC();
            }
            if (DSCTools.headerCommentsEndHere(event)) {
                //Set number of pages
                DSCCommentPages pages = new DSCCommentPages(pageCount);
                pages.generate(gen);

                PSFontUtils.determineSuppliedFonts(resTracker, fontInfo, fontInfo.getUsedFonts());
                registerSuppliedForms(resTracker, formResources);
               
                //Supplied Resources
                DSCCommentDocumentSuppliedResources supplied
                    = new DSCCommentDocumentSuppliedResources(
                            resTracker.getDocumentSuppliedResources());
                supplied.generate(gen);
               
                //Needed Resources
                DSCCommentDocumentNeededResources needed
                    = new DSCCommentDocumentNeededResources(
                            resTracker.getDocumentNeededResources());
                needed.generate(gen);

                //Write original comment that ends the header comments
                event.generate(gen);
                break;
            }
            if (event.isDSCComment()) {
                DSCComment comment = event.asDSCComment();
                if (DSCConstants.LANGUAGE_LEVEL.equals(comment.getName())) {
                    DSCCommentLanguageLevel level = (DSCCommentLanguageLevel)comment;
                    gen.setPSLevel(level.getLanguageLevel());
                }
            }
            event.generate(gen);
        }
       
        //Skip to the FOPFontSetup
        PostScriptComment fontSetupPlaceholder = parser.nextPSComment("FOPFontSetup", gen);
        if (fontSetupPlaceholder == null) {
            throw new DSCException("Didn't find %FOPFontSetup comment in stream");
        }
        PSFontUtils.writeFontDict(gen, fontInfo, fontInfo.getUsedFonts());
        generateForms(resTracker, userAgent, formResources, gen);

        //Skip the prolog and to the first page
        DSCComment pageOrTrailer = parser.nextDSCComment(DSCConstants.PAGE, gen);
        if (pageOrTrailer == null) {
            throw new DSCException("Page expected, but none found");
        }
       
        //Process individual pages (and skip as necessary)
        while (true) {
            DSCCommentPage page = (DSCCommentPage)pageOrTrailer;
            page.generate(gen);
            pageOrTrailer = DSCTools.nextPageOrTrailer(parser, gen);
            if (pageOrTrailer == null) {
                reportInvalidDSC();
            } else if (!DSCConstants.PAGE.equals(pageOrTrailer.getName())) {
                pageOrTrailer.generate(gen);
                break;
            }
        }
       
        //Write the rest
        while (parser.hasNext()) {
            DSCEvent event = parser.nextEvent();
            event.generate(gen);
        }
    }
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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        if (to < from) {
            throw new IllegalArgumentException(
                    "'to' page number must be equal or larger than the 'from' page number");
        }

        DSCParser parser = new DSCParser(in);
        PSGenerator gen = new PSGenerator(out);
        parser.addListener(new DefaultNestedDocumentHandler(gen));
        int pageCount = 0;

        //Skip DSC header
        DSCHeaderComment header = DSCTools.checkAndSkipDSC30Header(parser);
        header.generate(gen);
        //Set number of pages
        DSCCommentPages pages = new DSCCommentPages(to - from + 1);
        pages.generate(gen);

        parser.setFilter(new DSCFilter() {
            public boolean accept(DSCEvent event) {
                if (event.isDSCComment()) {
                    //Filter %%Pages which we add manually above
                    return !event.asDSCComment().getName().equals(DSCConstants.PAGES);
                } else {
                    return true;
                }
            }
        });

        //Skip the prolog and to the first page
        DSCComment pageOrTrailer = parser.nextDSCComment(DSCConstants.PAGE, gen);
        if (pageOrTrailer == null) {
            throw new DSCException("Page expected, but none found");
        }
        parser.setFilter(null); //Remove filter

        //Process individual pages (and skip as necessary)
        while (true) {
            DSCCommentPage page = (DSCCommentPage)pageOrTrailer;
            boolean validPage = (page.getPagePosition() >= from && page.getPagePosition() <= to);
            if (validPage) {
                page.setPagePosition(page.getPagePosition() - from + 1);
                page.generate(gen);
                pageCount++;
            }
            pageOrTrailer = DSCTools.nextPageOrTrailer(parser, (validPage ? gen : null));
            if (pageOrTrailer == null) {
                throw new DSCException("File is not DSC-compliant: Unexpected end of file");
            } else if (!DSCConstants.PAGE.equals(pageOrTrailer.getName())) {
                pageOrTrailer.generate(gen);
                break;
            }
        }

        //Write the rest
        while (parser.hasNext()) {
            DSCEvent event = parser.nextEvent();
            event.generate(gen);
        }
    }
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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        if (to < from) {
            throw new IllegalArgumentException(
                    "'to' page number must be equal or larger than the 'from' page number");
        }
       
        DSCParser parser = new DSCParser(in);
        PSGenerator gen = new PSGenerator(out);
        parser.setNestedDocumentHandler(new DefaultNestedDocumentHandler(gen));
        int pageCount = 0;
       
        //Skip DSC header
        DSCHeaderComment header = DSCTools.checkAndSkipDSC30Header(parser);
        header.generate(gen);
        //Set number of pages
        DSCCommentPages pages = new DSCCommentPages(to - from + 1);
        pages.generate(gen);

        parser.setFilter(new DSCFilter() {
            public boolean accept(DSCEvent event) {
                if (event.isDSCComment()) {
                    //Filter %%Pages which we add manually above
                    return !event.asDSCComment().getName().equals(DSCConstants.PAGES);
                } else {
                    return true;
                }
            }
        });

        //Skip the prolog and to the first page
        DSCComment pageOrTrailer = parser.nextDSCComment(DSCConstants.PAGE, gen);
        if (pageOrTrailer == null) {
            throw new DSCException("Page expected, but none found");
        }
        parser.setFilter(null); //Remove filter
       
        //Process individual pages (and skip as necessary)
        while (true) {
            DSCCommentPage page = (DSCCommentPage)pageOrTrailer;
            boolean validPage = (page.getPagePosition() >= from && page.getPagePosition() <= to);
            if (validPage) {
                page.setPagePosition(page.getPagePosition() - from + 1);
                page.generate(gen);
                pageCount++;
            }
            pageOrTrailer = DSCTools.nextPageOrTrailer(parser, (validPage ? gen : null));
            if (pageOrTrailer == null) {
                throw new DSCException("File is not DSC-compliant: Unexpected end of file");
            } else if (!DSCConstants.PAGE.equals(pageOrTrailer.getName())) {
                pageOrTrailer.generate(gen);
                break;
            }
        }
       
        //Write the rest
        while (parser.hasNext()) {
            DSCEvent event = parser.nextEvent();
            event.generate(gen);
        }
    }
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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            throws IOException {

        in.mark();
        try {
            Rectangle2D bbox = null;
            DSCParser parser;
            try {
                parser = new DSCParser(new ImageInputStreamAdapter(in));
                outerLoop:
                while (parser.hasNext()) {
                    DSCEvent event = parser.nextEvent();
                    switch (event.getEventType()) {
                    case DSCParserConstants.HEADER_COMMENT:
                    case DSCParserConstants.COMMENT:
                        //ignore
                        break;
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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     */
    public static void process(FOUserAgent userAgent, InputStream in, OutputStream out,
            FontInfo fontInfo, ResourceTracker resTracker, Map formResources,
            int pageCount, Rectangle2D documentBoundingBox)
                    throws DSCException, IOException {
        DSCParser parser = new DSCParser(in);
        PSGenerator gen = new PSGenerator(out);
        parser.setNestedDocumentHandler(new DefaultNestedDocumentHandler(gen));
       
        //Skip DSC header
        DSCHeaderComment header = DSCTools.checkAndSkipDSC30Header(parser);
        header.generate(gen);
       
        parser.setFilter(new DSCFilter() {
            private final Set filtered = new java.util.HashSet();
            {
                //We rewrite those as part of the processing
                filtered.add(DSCConstants.PAGES);
                filtered.add(DSCConstants.BBOX);
                filtered.add(DSCConstants.HIRES_BBOX);
                filtered.add(DSCConstants.DOCUMENT_NEEDED_RESOURCES);
                filtered.add(DSCConstants.DOCUMENT_SUPPLIED_RESOURCES);
            }
            public boolean accept(DSCEvent event) {
                if (event.isDSCComment()) {
                    //Filter %%Pages which we add manually from a parameter
                    return !(filtered.contains(event.asDSCComment().getName()));
                } else {
                    return true;
                }
            }
        });

        //Get PostScript language level (may be missing)
        while (true) {
            DSCEvent event = parser.nextEvent();
            if (event == null) {
                reportInvalidDSC();
            }
            if (DSCTools.headerCommentsEndHere(event)) {
                //Set number of pages
                DSCCommentPages pages = new DSCCommentPages(pageCount);
                pages.generate(gen);
                new DSCCommentBoundingBox(documentBoundingBox).generate(gen);
                new DSCCommentHiResBoundingBox(documentBoundingBox).generate(gen);

                PSFontUtils.determineSuppliedFonts(resTracker, fontInfo, fontInfo.getUsedFonts());
                registerSuppliedForms(resTracker, formResources);
               
                //Supplied Resources
                DSCCommentDocumentSuppliedResources supplied
                    = new DSCCommentDocumentSuppliedResources(
                            resTracker.getDocumentSuppliedResources());
                supplied.generate(gen);
               
                //Needed Resources
                DSCCommentDocumentNeededResources needed
                    = new DSCCommentDocumentNeededResources(
                            resTracker.getDocumentNeededResources());
                needed.generate(gen);

                //Write original comment that ends the header comments
                event.generate(gen);
                break;
            }
            if (event.isDSCComment()) {
                DSCComment comment = event.asDSCComment();
                if (DSCConstants.LANGUAGE_LEVEL.equals(comment.getName())) {
                    DSCCommentLanguageLevel level = (DSCCommentLanguageLevel)comment;
                    gen.setPSLevel(level.getLanguageLevel());
                }
            }
            event.generate(gen);
        }
       
        //Skip to the FOPFontSetup
        PostScriptComment fontSetupPlaceholder = parser.nextPSComment("FOPFontSetup", gen);
        if (fontSetupPlaceholder == null) {
            throw new DSCException("Didn't find %FOPFontSetup comment in stream");
        }
        PSFontUtils.writeFontDict(gen, fontInfo, fontInfo.getUsedFonts());
        generateForms(resTracker, userAgent, formResources, gen);

        //Skip the prolog and to the first page
        DSCComment pageOrTrailer = parser.nextDSCComment(DSCConstants.PAGE, gen);
        if (pageOrTrailer == null) {
            throw new DSCException("Page expected, but none found");
        }
       
        //Process individual pages (and skip as necessary)
        while (true) {
            DSCCommentPage page = (DSCCommentPage)pageOrTrailer;
            page.generate(gen);
            pageOrTrailer = DSCTools.nextPageOrTrailer(parser, gen);
            if (pageOrTrailer == null) {
                reportInvalidDSC();
            } else if (!DSCConstants.PAGE.equals(pageOrTrailer.getName())) {
                pageOrTrailer.generate(gen);
                break;
            }
        }
       
        //Write the rest
        while (parser.hasNext()) {
            DSCEvent event = parser.nextEvent();
            event.generate(gen);
        }
    }
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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        if (to < from) {
            throw new IllegalArgumentException(
                    "'to' page number must be equal or larger than the 'from' page number");
        }

        DSCParser parser = new DSCParser(in);
        PSGenerator gen = new PSGenerator(out);
        parser.addListener(new DefaultNestedDocumentHandler(gen));
        int pageCount = 0;

        //Skip DSC header
        DSCHeaderComment header = DSCTools.checkAndSkipDSC30Header(parser);
        header.generate(gen);
        //Set number of pages
        DSCCommentPages pages = new DSCCommentPages(to - from + 1);
        pages.generate(gen);

        parser.setFilter(new DSCFilter() {
            public boolean accept(DSCEvent event) {
                if (event.isDSCComment()) {
                    //Filter %%Pages which we add manually above
                    return !event.asDSCComment().getName().equals(DSCConstants.PAGES);
                } else {
                    return true;
                }
            }
        });

        //Skip the prolog and to the first page
        DSCComment pageOrTrailer = parser.nextDSCComment(DSCConstants.PAGE, gen);
        if (pageOrTrailer == null) {
            throw new DSCException("Page expected, but none found");
        }
        parser.setFilter(null); //Remove filter

        //Process individual pages (and skip as necessary)
        while (true) {
            DSCCommentPage page = (DSCCommentPage)pageOrTrailer;
            boolean validPage = (page.getPagePosition() >= from && page.getPagePosition() <= to);
            if (validPage) {
                page.setPagePosition(page.getPagePosition() - from + 1);
                page.generate(gen);
                pageCount++;
            }
            pageOrTrailer = DSCTools.nextPageOrTrailer(parser, (validPage ? gen : null));
            if (pageOrTrailer == null) {
                throw new DSCException("File is not DSC-compliant: Unexpected end of file");
            } else if (!DSCConstants.PAGE.equals(pageOrTrailer.getName())) {
                pageOrTrailer.generate(gen);
                break;
            }
        }

        //Write the rest
        while (parser.hasNext()) {
            DSCEvent event = parser.nextEvent();
            event.generate(gen);
        }
    }
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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            throws IOException {

        in.mark();
        try {
            Rectangle2D bbox = null;
            DSCParser parser;
            try {
                parser = new DSCParser(new ImageInputStreamAdapter(in));
                outerLoop:
                while (parser.hasNext()) {
                    DSCEvent event = parser.nextEvent();
                    switch (event.getEventType()) {
                    case DSCParserConstants.HEADER_COMMENT:
                    case DSCParserConstants.COMMENT:
                        //ignore
                        break;
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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    private void verifyPostScriptFile(File psFile, int level)
                throws IOException, DSCException {
        InputStream in = new java.io.FileInputStream(psFile);
        in = new java.io.BufferedInputStream(in);
        try {
            DSCParser parser = new DSCParser(in);

            DSCCommentPages pages = (DSCCommentPages)gotoDSCComment(parser, DSCConstants.PAGES);
            assertEquals(1, pages.getPageCount());

            //Skip procsets and encoding
            gotoDSCComment(parser, DSCConstants.BEGIN_RESOURCE);
            gotoDSCComment(parser, DSCConstants.BEGIN_RESOURCE);
            gotoDSCComment(parser, DSCConstants.BEGIN_RESOURCE);

            PSResource form2 = new PSResource(PSResource.TYPE_FORM, "FOPForm:2");
            checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form2);
            DSCCommentTitle title = (DSCCommentTitle)parser.nextEvent().asDSCComment();
            assertEquals("image/jpeg test/resources/images/bgimg300dpi.jpg", title.getTitle());

            String resourceContent = getResourceContent(parser);

            if (level == 3) {
                assertContains(resourceContent, "/FOPForm:2");
                assertContains(resourceContent, "/DCTDecode filter");
                assertContains(resourceContent, "/ReusableStreamDecode filter");
            } else {
                assertContains(resourceContent, "/FOPForm:2");
                assertContains(resourceContent, "/DCTDecode filter");
                assertAbsent(resourceContent, "/ReusableStreamDecode filter");
            }

            //---=== Page 1 ===---
            DSCCommentPage page = (DSCCommentPage)gotoDSCComment(parser, DSCConstants.PAGE);
            assertEquals(1, page.getPagePosition());

            PSResource form1 = new PSResource(PSResource.TYPE_FORM, "FOPForm:1");
            checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form1);
            title = (DSCCommentTitle)parser.nextEvent().asDSCComment();
            assertEquals("image/jpeg test/resources/images/bgimg72dpi.jpg", title.getTitle());
            resourceContent = getResourceContent(parser);

            if (level == 3) {
                assertContains(resourceContent, "/FOPForm:1");
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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    private void verifyPostScriptFile(File psFile) throws IOException, DSCException {
        InputStream in = new java.io.FileInputStream(psFile);
        in = new java.io.BufferedInputStream(in);
        try {
            DSCParser parser = new DSCParser(in);

            //The first form is for arrow_down_small.png (to be reused)
            PSResource form1 = new PSResource(PSResource.TYPE_FORM, "FOPForm:1");
            PSResource helvetica = new PSResource(PSResource.TYPE_FONT, "Helvetica");
            PSResource helveticaBold = new PSResource(PSResource.TYPE_FONT, "Helvetica-Bold");

            PSResource res;
            DSCCommentPages pages = (DSCCommentPages)gotoDSCComment(parser, DSCConstants.PAGES);
            assertEquals(2, pages.getPageCount());

            DSCCommentDocumentSuppliedResources supplied
                = (DSCCommentDocumentSuppliedResources)gotoDSCComment(parser,
                        DSCConstants.DOCUMENT_SUPPLIED_RESOURCES);
            Set resources = supplied.getResources();
            assertEquals(4, resources.size());
            assertTrue(resources.contains(form1));
            assertTrue("Expected barcode.eps as supplied resource",
                    resources.contains(new PSResource(PSResource.TYPE_FILE,
                            "test/resources/images/barcode.eps")));

            DSCCommentDocumentNeededResources needed
                = (DSCCommentDocumentNeededResources)gotoDSCComment(parser,
                        DSCConstants.DOCUMENT_NEEDED_RESOURCES);
            resources = needed.getResources();
            assertEquals(2, resources.size());
            assertTrue("Expected Helvetica as needed resource",
                    resources.contains(new PSResource(PSResource.TYPE_FONT, "Helvetica")));
            assertTrue("Expected Helvetica-Bold as needed resource",
                    resources.contains(new PSResource(PSResource.TYPE_FONT, "Helvetica-Bold")));

            //Some document structure checking
            assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_DEFAULTS));
            assertNotNull(gotoDSCComment(parser, DSCConstants.END_DEFAULTS));
            assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_PROLOG));
            assertNotNull(gotoDSCComment(parser, DSCConstants.END_PROLOG));
            assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_SETUP));

            //Check includes for the two referenced base 14 fonts
            DSCCommentIncludeResource include;
            Collection strings = new java.util.HashSet(
                    Arrays.asList(new String[] {"Helvetica", "Helvetica-Bold"}));
            for (int i = 0; i < 2; i++) {
                include = (DSCCommentIncludeResource)gotoDSCComment(
                        parser, DSCConstants.INCLUDE_RESOURCE);
                res = include.getResource();
                assertEquals(PSResource.TYPE_FONT, res.getType());
                strings.remove(res.getName());
            }
            assertEquals(0, strings.size());

            checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE,
                    new PSResource(PSResource.TYPE_ENCODING, "WinAnsiEncoding"));

            //Here, we encounter form 1 again
            checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form1);

            assertNotNull(gotoDSCComment(parser, DSCConstants.END_SETUP));
            //Now the actual pages begin

            //---=== Page 1 ===---
            DSCCommentPage page = (DSCCommentPage)gotoDSCComment(parser, DSCConstants.PAGE);
            assertEquals(1, page.getPagePosition());

            assertEquals(DSCAtend.class,
                    gotoDSCComment(parser, DSCConstants.PAGE_RESOURCES).getClass());
            assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_PAGE_SETUP));
            assertNotNull(gotoDSCComment(parser, DSCConstants.END_PAGE_SETUP));

            PSResource form2 = new PSResource(PSResource.TYPE_FORM, "FOPForm:2");
            checkResourceComment(parser, DSCConstants.BEGIN_RESOURCE, form2);
            assertNotNull(gotoDSCComment(parser, DSCConstants.PAGE_TRAILER));

            AbstractResourcesDSCComment pageResources;
            pageResources = (AbstractResourcesDSCComment)gotoDSCComment(
                    parser, DSCConstants.PAGE_RESOURCES);
            resources = pageResources.getResources();
            assertEquals(5, resources.size());
            assertTrue(resources.contains(form1));
            assertTrue(resources.contains(form2));
            assertTrue(resources.contains(helvetica));
            assertTrue(resources.contains(helveticaBold));

            //---=== Page 2 ===---
            page = (DSCCommentPage)gotoDSCComment(parser, DSCConstants.PAGE);
            assertEquals(2, page.getPagePosition());

            assertEquals(DSCAtend.class,
                    gotoDSCComment(parser, DSCConstants.PAGE_RESOURCES).getClass());
            assertNotNull(gotoDSCComment(parser, DSCConstants.BEGIN_PAGE_SETUP));
            assertNotNull(gotoDSCComment(parser, DSCConstants.END_PAGE_SETUP));

            DSCCommentBeginDocument beginDocument;
            beginDocument = (DSCCommentBeginDocument)gotoDSCComment(
                    parser, DSCConstants.BEGIN_DOCUMENT);
            assertEquals("test/resources/images/barcode.eps",
                    beginDocument.getResource().getName());
            DSCListener listener = new DefaultNestedDocumentHandler(null);
            listener.processEvent(beginDocument, parser);

            //And again (the barcode is generated twice)
            beginDocument = (DSCCommentBeginDocument)gotoDSCComment(
                    parser, DSCConstants.BEGIN_DOCUMENT);
            assertEquals("test/resources/images/barcode.eps",
                    beginDocument.getResource().getName());
            listener.processEvent(beginDocument, parser);

            assertNotNull(gotoDSCComment(parser, DSCConstants.PAGE_TRAILER));
            pageResources = (AbstractResourcesDSCComment)gotoDSCComment(
                    parser, DSCConstants.PAGE_RESOURCES);
            resources = pageResources.getResources();
            assertEquals(6, resources.size());
            assertTrue(resources.contains(form1));
            assertFalse(resources.contains(form2));
            assertTrue(resources.contains(helvetica));
            assertTrue(resources.contains(helveticaBold));
            assertTrue(resources.contains(beginDocument.getResource()));

            assertNotNull(gotoDSCComment(parser, DSCConstants.TRAILER));
            //No headers in between, as they should have been put at the beginning of the file
            assertEquals(DSCCommentEndOfFile.class, parser.nextEvent().asDSCComment().getClass());

        } finally {
            IOUtils.closeQuietly(in);
        }
    }
View Full Code Here

Examples of org.apache.xmlgraphics.ps.dsc.DSCParser

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     * @throws IOException In case of an I/O error
     */
    public void process(InputStream in, OutputStream out,
            int pageCount, Rectangle2D documentBoundingBox)
                    throws DSCException, IOException {
        DSCParser parser = new DSCParser(in);

        PSGenerator gen = new PSGenerator(out);
        parser.addListener(new DefaultNestedDocumentHandler(gen));
        parser.addListener(new IncludeResourceListener(gen));

        //Skip DSC header
        DSCHeaderComment header = DSCTools.checkAndSkipDSC30Header(parser);
        header.generate(gen);

        parser.setFilter(new DSCFilter() {
            private final Set filtered = new java.util.HashSet();
            {
                //We rewrite those as part of the processing
                filtered.add(DSCConstants.PAGES);
                filtered.add(DSCConstants.BBOX);
                filtered.add(DSCConstants.HIRES_BBOX);
                filtered.add(DSCConstants.DOCUMENT_NEEDED_RESOURCES);
                filtered.add(DSCConstants.DOCUMENT_SUPPLIED_RESOURCES);
            }
            public boolean accept(DSCEvent event) {
                if (event.isDSCComment()) {
                    //Filter %%Pages which we add manually from a parameter
                    return !(filtered.contains(event.asDSCComment().getName()));
                } else {
                    return true;
                }
            }
        });

        //Get PostScript language level (may be missing)
        while (true) {
            DSCEvent event = parser.nextEvent();
            if (event == null) {
                reportInvalidDSC();
            }
            if (DSCTools.headerCommentsEndHere(event)) {
                //Set number of pages
                DSCCommentPages pages = new DSCCommentPages(pageCount);
                pages.generate(gen);
                new DSCCommentBoundingBox(documentBoundingBox).generate(gen);
                new DSCCommentHiResBoundingBox(documentBoundingBox).generate(gen);

                PSFontUtils.determineSuppliedFonts(resTracker, fontInfo, fontInfo.getUsedFonts());
                registerSuppliedForms(resTracker, globalFormResources);

                //Supplied Resources
                DSCCommentDocumentSuppliedResources supplied
                    = new DSCCommentDocumentSuppliedResources(
                            resTracker.getDocumentSuppliedResources());
                supplied.generate(gen);

                //Needed Resources
                DSCCommentDocumentNeededResources needed
                    = new DSCCommentDocumentNeededResources(
                            resTracker.getDocumentNeededResources());
                needed.generate(gen);

                //Write original comment that ends the header comments
                event.generate(gen);
                break;
            }
            if (event.isDSCComment()) {
                DSCComment comment = event.asDSCComment();
                if (DSCConstants.LANGUAGE_LEVEL.equals(comment.getName())) {
                    DSCCommentLanguageLevel level = (DSCCommentLanguageLevel)comment;
                    gen.setPSLevel(level.getLanguageLevel());
                }
            }
            event.generate(gen);
        }

        //Skip to the FOPFontSetup
        PostScriptComment fontSetupPlaceholder = parser.nextPSComment("FOPFontSetup", gen);
        if (fontSetupPlaceholder == null) {
            throw new DSCException("Didn't find %FOPFontSetup comment in stream");
        }
        PSFontUtils.writeFontDict(gen, fontInfo, fontInfo.getUsedFonts());
        generateForms(globalFormResources, gen);

        //Skip the prolog and to the first page
        DSCComment pageOrTrailer = parser.nextDSCComment(DSCConstants.PAGE, gen);
        if (pageOrTrailer == null) {
            throw new DSCException("Page expected, but none found");
        }

        //Process individual pages (and skip as necessary)
        while (true) {
            DSCCommentPage page = (DSCCommentPage)pageOrTrailer;
            page.generate(gen);
            pageOrTrailer = DSCTools.nextPageOrTrailer(parser, gen);
            if (pageOrTrailer == null) {
                reportInvalidDSC();
            } else if (!DSCConstants.PAGE.equals(pageOrTrailer.getName())) {
                pageOrTrailer.generate(gen);
                break;
            }
        }

        //Write the rest
        while (parser.hasNext()) {
            DSCEvent event = parser.nextEvent();
            event.generate(gen);
        }
        gen.flush();
    }
View Full Code Here
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