com.denimgroup.threadfix.util.IntegerUtils Maven / Gradle / Ivy

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package com.denimgroup.threadfix.util;

import com.denimgroup.threadfix.logging.SanitizedLogger;

public class IntegerUtils {

    private static final SanitizedLogger log = new SanitizedLogger(IntegerUtils.class);

    private IntegerUtils(){}

    /**
     * Returns Integer.valueOf(input) with exception handling. Will return -1 if it fails to parse.
     *
     * @param input String representation of an integer
     * @return the parsed number, or -1 on failure
     */
    public static int getPrimitive(String input) {

        if (input == null) {
            log.warn("Null string passed to getPrimitive");
            return -1;
        }

        if (!input.matches("^[0-9]+$")) {
            log.warn("Non-numeric String encountered.");
            return -1;
        }

        try {
            return Integer.valueOf(input);
        } catch (NumberFormatException e) {
            log.warn("Non-numeric input encountered: " + input, e);
            return -1;
        }
    }

    /**
     * Returns Integer.valueOf(input) with exception handling. Will return null if it fails to parse.
     *
     * @param input String representation of an integer
     * @return the parsed number, or null on failure
     */
    public static Integer getIntegerOrNull(String input){

        String regex = "^[-+]?[0-9]+$";


        if (input == null) {
            log.debug("Null passed to getInteger or null.");
            return null;
        }

        if (!input.matches(regex)) {
            log.warn("Non-numeric String encountered: " + input);
            return null;
        }

        try {
            return Integer.valueOf(input);
        } catch (NumberFormatException e) {
            log.warn("Non-numeric input encountered: " + input, e);
            return null;
        }
    }
}