public JarExecutor()

in src/main/java/org/apache/sling/testing/serversetup/jarexec/JarExecutor.java [84:128]
38 lines of code
10 McCabe index (conditional complexity)

    public JarExecutor(Properties config) throws ExecutorException {
        this.config = config;
        final boolean isWindows = System.getProperty("os.name").toLowerCase().contains("windows");

        String portStr = config.getProperty(PROP_SERVER_PORT);
        serverPort = portStr == null ? DEFAULT_PORT : Integer.valueOf(portStr);

        final String configJvmPath = config.getProperty(PROP_JAVA_PATH);
        if(configJvmPath == null) {
            final String javaExecutable = isWindows ? "java.exe" : "java";
            jvmFullPath = System.getProperty( "java.home" ) + File.separator + "bin" + File.separator + javaExecutable;
        } else {
            jvmFullPath = configJvmPath;
        }

        String jarFolderPath = config.getProperty(PROP_JAR_FOLDER);
        jarFolderPath = jarFolderPath == null ? DEFAULT_JAR_FOLDER : jarFolderPath;
        final File jarFolder = new File(jarFolderPath);

        String jarNameRegexp = config.getProperty(PROP_JAR_NAME_REGEXP);
        jarNameRegexp = jarNameRegexp == null ? DEFAULT_JAR_NAME_REGEXP : jarNameRegexp;
        final Pattern jarPattern = Pattern.compile(jarNameRegexp);

        // Find executable jar
        final String [] candidates = jarFolder.list();
        if(candidates == null) {
            throw new ExecutorException(
                    "No files found in jar folder specified by "
                    + PROP_JAR_FOLDER + " property: " + jarFolder.getAbsolutePath());
        }
        File f = null;
        for(String filename : candidates) {
            if(jarPattern.matcher(filename).matches()) {
                f = new File(jarFolder, filename);
                break;
            }
        }

        if(f == null) {
            throw new ExecutorException("Executable jar matching '" + jarPattern
                    + "' not found in " + jarFolder.getAbsolutePath()
                    + ", candidates are " + Arrays.asList(candidates));
        }
        jarToExecute = f;
    }