Example usage for com.google.common.collect Iterables find

Introduction

In this page you can find the example usage for com.google.common.collect Iterables find.

Prototype

public static <T> T find(Iterable<T> iterable, Predicate<? super T> predicate)

Source Link

Document

Returns the first element in iterable that satisfies the given predicate; use this method only when such an element is known to exist.

Usage

From source file:bear.plugins.sh.SystemSession.java

protected OSInfo computeUnixFlavour() {

    //        versionScheme.parseVersion();

    try {/* ww  w . j a va  2 s .c  o m*/
        final String text = capture("cat /etc/issue");

        if (text == null)
            return null;

        UnixFlavour flavour = null;
        UnixSubFlavour subFlavour = null;
        org.eclipse.aether.version.Version version = null;

        if (text.contains("CentOS")) {
            flavour = UnixFlavour.CENTOS;
            subFlavour = UnixSubFlavour.CENTOS;

            String versionLine = Iterables.find(LINE_SPLITTER.split(text), Predicates2.contains("CentOS"));
            Matcher matcher = Pattern.compile("release\\s+([^\\s]+)").matcher(versionLine);

            if (!matcher.find()) {
                throw new ValidationException("could not parse OS version: " + versionLine);
            }

            version = Versions.VERSION_SCHEME.parseVersion(matcher.group(1));
        } else if (text.contains("Ubuntu")) {
            flavour = UnixFlavour.UBUNTU;
            subFlavour = UnixSubFlavour.UBUNTU;

            Matcher matcher = Pattern.compile("Ubuntu\\s+(\\d+\\.\\d+)").matcher(text);

            if (!matcher.find()) {
                throw new ValidationException("could not parse OS version: " + text);
            }

            version = Versions.VERSION_SCHEME.parseVersion(matcher.group(1));
        } else {
            throw new UnsupportedOperationException("todo support: " + text);
        }

        return new OSInfo(flavour, subFlavour, version);
    } catch (InvalidVersionSpecificationException e) {
        throw Exceptions.runtime(e);
    }
}