ParseInfoToLoginName.java

package hudson.plugins.accurev.parsers.output;

import hudson.plugins.accurev.AccurevLauncher.ICmdOutputParser;
import hudson.plugins.accurev.AccurevLauncher.UnhandledAccurevCommandOutput;

import java.io.*;
import java.nio.charset.Charset;

public final class ParseInfoToLoginName implements ICmdOutputParser<String, Void> {
    public String parse(InputStream cmdOutput, Void context) throws UnhandledAccurevCommandOutput, IOException {
        final String usernameHeading = "Principal:";
        final String controlCharsOrSpaceRegex = "[ \\x00-\\x1F\\x7F]+";
        final Reader stringReader = new InputStreamReader(cmdOutput, Charset.defaultCharset());
        try (BufferedReader reader = new BufferedReader(stringReader)) {
            String line;
            while ((line = reader.readLine()) != null) {
                if (line.contains("not logged in")) return null;
                final String[] parts = line.split(controlCharsOrSpaceRegex);
                for (int i = 0; i < parts.length; i++) {
                    final String part = parts[i];
                    if (usernameHeading.equals(part)) {
                        if ((i + 1) < parts.length) {
                            return parts[i + 1]; // returns username
                        }
                    }
                }
            }
        }
        throw new UnhandledAccurevCommandOutput("Output did not contain " + usernameHeading + " "
            + controlCharsOrSpaceRegex + " <username>");
    }
}