private int createSubsystemManifest()

in src/main/java/org/apache/sling/maven/slingstart/PreparePackageMojo.java [450:493]
40 lines of code
6 McCabe index (conditional complexity)

    private int createSubsystemManifest(Feature feature,
            Map<String, Integer> startOrderMap, ZipOutputStream os) throws IOException {
        int subsystemStartLevel = -1;
        ZipEntry ze = new ZipEntry("SUBSYSTEM-MANIFEST-BASE.MF");
        try {
            os.putNextEntry(ze);

            Manifest mf = new Manifest();
            Attributes attributes = mf.getMainAttributes();
            attributes.putValue("Manifest-Version", "1.0"); // Manifest does not work without this value
            attributes.putValue("Subsystem-SymbolicName", feature.getName());
            attributes.putValue("Subsystem-Version", "1"); // Version must be an integer (cannot be a long), TODO better idea?
            attributes.putValue("Subsystem-Type", feature.getType());
            for (Section section : feature.getAdditionalSections("subsystem-manifest")) {
                String sl = section.getAttributes().get("startLevel");
                try {
                    subsystemStartLevel = Integer.parseInt(sl);
                } catch (NumberFormatException nfe) {
                    // Not a valid start level
                }

                BufferedReader br = new BufferedReader(new StringReader(section.getContents()));
                String line = null;
                while ((line = br.readLine()) != null) {
                    int idx = line.indexOf(':');
                    if (idx > 0) {
                        String key = line.substring(0, idx);
                        String value;
                        idx++;
                        if (line.length() > idx)
                            value = line.substring(idx);
                        else
                            value = "";
                        attributes.putValue(key.trim(), value.trim());
                    }
                }
            }
            mf.write(os);
        } finally {
            os.closeEntry();
        }

        return subsystemStartLevel;
    }