protected void fillMapsFromArchive()

in src/main/org/apache/ant/compress/resources/CommonsCompressArchiveScanner.java [88:131]
43 lines of code
10 McCabe index (conditional complexity)

    protected void fillMapsFromArchive(Resource src, String encoding,
                                       Map fileEntries, Map matchFileEntries,
                                       Map dirEntries, Map matchDirEntries) {
        ArchiveEntry entry = null;
        ArchiveInputStream ai = null;

        try {
            try {
                ai = StreamHelper.getInputStream(factory, src, encoding);
                if (ai == null) {
                    ai =
                        factory.getArchiveStream(new BufferedInputStream(src
                                                                         .getInputStream()),
                                                 encoding);
                }
            } catch (IOException ex) {
                throw new BuildException("problem opening " + src, ex);
            }
            while ((entry = ai.getNextEntry()) != null) {
                if (skipUnreadable && !ai.canReadEntryData(entry)) {
                    log(Messages.skippedIsUnreadable(entry));
                    continue;
                }
                Resource r = builder.buildResource(src, encoding, entry);
                String name = entry.getName();
                if (entry.isDirectory()) {
                    name = trimSeparator(name);
                    dirEntries.put(name, r);
                    if (match(name)) {
                        matchDirEntries.put(name, r);
                    }
                } else {
                    fileEntries.put(name, r);
                    if (match(name)) {
                        matchFileEntries.put(name, r);
                    }
                }
            }
        } catch (IOException ex) {
            throw new BuildException("problem reading " + src, ex);
        } finally {
            FileUtils.close(ai);
        }
    }