public void parse()

in tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/onenote/OneNoteParser.java [79:184]
96 lines of code
10 McCabe index (conditional complexity)

    public void parse(InputStream stream, ContentHandler handler, Metadata metadata,
                      ParseContext context) throws IOException, SAXException, TikaException {
        byte[] oneStoreFileBytes = IOUtils.toByteArray(stream);

        try (TemporaryResources temporaryResources = new TemporaryResources();
                TikaInputStream tikaInputStream = TikaInputStream.get(oneStoreFileBytes);
                OneNoteDirectFileResource oneNoteDirectFileResource = new OneNoteDirectFileResource(
                        tikaInputStream.getFile())) {
            XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
            xhtml.startDocument();
            temporaryResources.addResource(oneNoteDirectFileResource);
            OneNoteDocument oneNoteDocument =
                    createOneNoteDocumentFromDirectFileResource(oneNoteDirectFileResource);

            OneNoteHeader header = oneNoteDocument.header;

            if (header.isMsOneStoreFormat()) {
                metadata.set(ONE_NOTE_PREFIX + "buildNumberCreated",
                        "0x" + Long.toHexString(oneNoteDocument.header.buildNumberCreated));
                metadata.set(ONE_NOTE_PREFIX + "buildNumberLastWroteToFile",
                        "0x" + Long.toHexString(oneNoteDocument.header.buildNumberLastWroteToFile));
                metadata.set(ONE_NOTE_PREFIX + "buildNumberNewestWritten",
                        "0x" + Long.toHexString(oneNoteDocument.header.buildNumberNewestWritten));
                metadata.set(ONE_NOTE_PREFIX + "buildNumberOldestWritten",
                        "0x" + Long.toHexString(oneNoteDocument.header.buildNumberOldestWritten));
                metadata.set(ONE_NOTE_PREFIX + "cbExpectedFileLength",
                        "0x" + Long.toHexString(oneNoteDocument.header.cbExpectedFileLength));
                metadata.set(ONE_NOTE_PREFIX + "cbFreeSpaceInFreeChunkList",
                        "0x" + Long.toHexString(oneNoteDocument.header.cbFreeSpaceInFreeChunkList));
                metadata.set(ONE_NOTE_PREFIX + "cbLegacyExpectedFileLength",
                        "0x" + Long.toHexString(oneNoteDocument.header.cbLegacyExpectedFileLength));
                metadata.set(ONE_NOTE_PREFIX + "cbLegacyFreeSpaceInFreeChunkList", "0x" +
                        Long.toHexString(oneNoteDocument.header.cbLegacyFreeSpaceInFreeChunkList));
                metadata.set(ONE_NOTE_PREFIX + "crcName", "0x" + Long.toHexString(oneNoteDocument.header.crcName));
                metadata.set(ONE_NOTE_PREFIX + "cTransactionsInLog",
                        "0x" + Long.toHexString(oneNoteDocument.header.cTransactionsInLog));
                metadata.set(ONE_NOTE_PREFIX + "ffvLastCodeThatWroteToThisFile", "0x" +
                        Long.toHexString(oneNoteDocument.header.ffvLastCodeThatWroteToThisFile));
                metadata.set(ONE_NOTE_PREFIX + "ffvNewestCodeThatHasWrittenToThisFile", "0x" + Long.toHexString(
                        oneNoteDocument.header.ffvNewestCodeThatHasWrittenToThisFile));
                metadata.set(ONE_NOTE_PREFIX + "ffvOldestCodeThatMayReadThisFile", "0x" +
                        Long.toHexString(oneNoteDocument.header.ffvOldestCodeThatMayReadThisFile));
                metadata.set(ONE_NOTE_PREFIX + "ffvOldestCodeThatHasWrittenToThisFile", "0x" + Long.toHexString(
                        oneNoteDocument.header.ffvOldestCodeThatHasWrittenToThisFile));
                metadata.set(ONE_NOTE_PREFIX + "grfDebugLogFlags",
                        "0x" + Long.toHexString(oneNoteDocument.header.grfDebugLogFlags));
                metadata.set(ONE_NOTE_PREFIX + "nFileVersionGeneration",
                        "0x" + Long.toHexString(oneNoteDocument.header.nFileVersionGeneration));
                metadata.set(ONE_NOTE_PREFIX + "rgbPlaceholder",
                        "0x" + Long.toHexString(oneNoteDocument.header.rgbPlaceholder));

                Pair<Long, ExtendedGUID> roleAndContext = Pair.of(1L, ExtendedGUID.nil());
                OneNoteTreeWalker oneNoteTreeWalker =
                        new OneNoteTreeWalker(options, oneNoteDocument, oneNoteDirectFileResource,
                                xhtml, metadata, context, roleAndContext);

                oneNoteTreeWalker.walkTree();

                if (!oneNoteTreeWalker.getAuthors().isEmpty()) {
                    metadata.set(TikaCoreProperties.CREATOR,
                            oneNoteTreeWalker.getAuthors().toArray(new String[]{}));
                }
                if (!oneNoteTreeWalker.getMostRecentAuthors().isEmpty()) {
                    metadata.set(Property.externalTextBag(ONE_NOTE_PREFIX + "mostRecentAuthors"),
                            oneNoteTreeWalker.getMostRecentAuthors().toArray(new String[]{}));
                }
                if (!oneNoteTreeWalker.getOriginalAuthors().isEmpty()) {
                    metadata.set(Property.externalTextBag(ONE_NOTE_PREFIX + "originalAuthors"),
                            oneNoteTreeWalker.getOriginalAuthors().toArray(new String[]{}));
                }
                if (!Instant.MAX.equals(
                        Instant.ofEpochMilli(oneNoteTreeWalker.getCreationTimestamp()))) {
                    metadata.set(ONE_NOTE_PREFIX + "creationTimestamp",
                            String.valueOf(oneNoteTreeWalker.getCreationTimestamp()));
                }
                if (!Instant.MIN.equals(oneNoteTreeWalker.getLastModifiedTimestamp())) {
                    metadata.set(ONE_NOTE_PREFIX + "lastModifiedTimestamp", String.valueOf(
                            oneNoteTreeWalker.getLastModifiedTimestamp().toEpochMilli()));
                }
                if (oneNoteTreeWalker.getLastModified() > Long.MIN_VALUE) {
                    metadata.set(TikaCoreProperties.MODIFIED,
                            String.valueOf(oneNoteTreeWalker.getLastModified()));
                }
            } else if (header.isLegacyOrAlternativePackaging()) {
                try {
                    AlternativePackaging alternatePackageOneStoreFile = new AlternativePackaging();
                    alternatePackageOneStoreFile.doDeserializeFromByteArray(oneStoreFileBytes, 0);

                    MSOneStoreParser onenoteParser = new MSOneStoreParser();
                    MSOneStorePackage pkg =
                            onenoteParser.parse(alternatePackageOneStoreFile.dataElementPackage);

                    pkg.walkTree(options, metadata, xhtml);
                } catch (Exception e) {
                    OneNoteLegacyDumpStrings dumpStrings =
                            new OneNoteLegacyDumpStrings(oneNoteDirectFileResource, xhtml);
                    dumpStrings.dump();
                }
            } else {
                throw new TikaException("Invalid OneStore document - could not parse headers");
            }
            xhtml.endDocument();
        }


    }