private void migrateArchiveInMemory()

in src/main/java/org/apache/tomcat/jakartaee/Migration.java [347:378]
27 lines of code
3 McCabe index (conditional complexity)

    private void migrateArchiveInMemory(InputStream src, OutputStream dest) throws IOException {
        // Read the source into memory
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        IOUtils.copy(src, baos);
        baos.flush();
        SeekableInMemoryByteChannel srcByteChannel = new SeekableInMemoryByteChannel(baos.toByteArray());
        // Create the destination in memory
        SeekableInMemoryByteChannel destByteChannel = new SeekableInMemoryByteChannel();

        try (ZipFile srcZipFile = ZipFile.builder().setSeekableByteChannel(srcByteChannel).get();
                ZipArchiveOutputStream destZipStream = new ZipArchiveOutputStream(destByteChannel)) {
            Enumeration<ZipArchiveEntry> entries = srcZipFile.getEntries();
            while (entries.hasMoreElements()) {
                ZipArchiveEntry srcZipEntry = entries.nextElement();
                String srcName = srcZipEntry.getName();
                if (isSignatureFile(srcName)) {
                    logger.log(Level.WARNING, sm.getString("migration.skipSignatureFile", srcName));
                    continue;
                }
                String destName = profile.convert(srcName);
                MigrationZipArchiveEntry destZipEntry = new MigrationZipArchiveEntry(srcZipEntry);
                destZipEntry.setName(destName);
                destZipStream.putArchiveEntry(destZipEntry);
                migrateStream(srcName, srcZipFile.getInputStream(srcZipEntry), destZipStream);
                destZipStream.closeArchiveEntry();
            }
        }

        // Write the destination back to the stream
        ByteArrayInputStream bais = new ByteArrayInputStream(destByteChannel.array(), 0, (int) destByteChannel.size());
        IOUtils.copy(bais, dest);
    }