ResourceConcatenator append()

in tooling/scripts/group-tests.groovy [103:127]

• 25 lines of code
• 6 McCabe index (conditional complexity)

    ResourceConcatenator append(Path path) {
        if (Files.exists(path)) {
            if (path.getFileName().toString().endsWith(".properties")) {
                Properties newProps = new Properties()
                path.withInputStream { is ->
                    newProps.load(is)
                }
                newProps.each { key, val ->
                    if (props.containsKey(key) && !props.get(key).equals(val)) {
                        if (commaConcatenatePropertyNames.contains(key)) {
                            props.put(key, props.get(key) + "," + val);
                        } else {
                            throw new IllegalStateException("Conflicting property value "+ key +" = "+ val +": found in "+ path + " conflicting with some of " + visitedPaths);
                        }
                    } else {
                        props.put(key, val);
                    }
                }
            } else {
                sb.append(path.getText('UTF-8') + '\n')
            }
            visitedPaths.add(path)
        }
        return this
    }