/*
 * Copyright (c) 2015 Mozilla Foundation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

package nu.validator.datatype;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.relaxng.datatype.DatatypeException;

public final class IntegrityMetadata extends AbstractDatatype {

    /**
     * The singleton instance.
     */
    public static final IntegrityMetadata THE_INSTANCE = new IntegrityMetadata();

    private static final Pattern THE_PATTERN = Pattern.compile(
            "^(?:sha256-|sha384-|sha512)(.+$)", Pattern.CASE_INSENSITIVE);

    private static final Pattern FULL_PATTERN = Pattern.compile(
            "^(?:sha256-|sha384-|sha512-)(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$",
            Pattern.CASE_INSENSITIVE);

    private IntegrityMetadata() {
        super();
    }

    private final static boolean WARN = System.getProperty(
            "nu.validator.datatype.warn", "").equals("true") ? true : false;

    public void checkValid(CharSequence literal) throws DatatypeException {
        Matcher m = getPattern().matcher(literal);
        if (m.matches()) {
            Matcher n = getFullPattern().matcher(literal);
            if (WARN && !n.matches()) {
                throw newDatatypeException("The text \u201c" + m.group(1)
                        + "\u201d does not appear to be a valid"
                        + " base64-encoded string.", WARN);
            }
        } else {
            throw newDatatypeException("The value must start with"
                    + " \u201csha256-\u201d or \u201csha384-\u201d"
                    + " or \u201csha512-\u201d.");
        }
    }

    /**
     * Returns the regexp for this datatype.
     *
     * @return the base regexp for this datatype
     * @see nu.validator.datatype.AbstractDatetime#getPattern()
     */
    protected Pattern getPattern() {
        return THE_PATTERN;
    }

    /**
     * Returns the full regexp for this datatype.
     *
     * @return the full regexp for this datatype
     * @see nu.validator.datatype.AbstractDatetime#getPattern()
     */
    protected Pattern getFullPattern() {
        return FULL_PATTERN;
    }

    @Override public String getName() {
        return "integrity-metadata";
    }
}

@@ -1262,16 +1262,70 @@
 ption;%0A%0A
+import com.shapesecurity.salvation.data.Base64Value;%0A%0A
 public f
@@ -1655,220 +1655,8 @@
 );%0A%0A
-    private static final Pattern FULL_PATTERN = Pattern.compile(%0A            %22%5E(?:sha256-%7Csha384-%7Csha512-)(?:%5BA-Za-z0-9+/%5D%7B4%7D)*(?:%5BA-Za-z0-9+/%5D%7B2%7D==%7C%5BA-Za-z0-9+/%5D%7B3%7D=)?$%22,%0A            Pattern.CASE_INSENSITIVE);%0A%0A
     
@@ -2017,285 +2017,167 @@
     
-Matcher n = getFullPattern().matcher(literal);%0A            if (WARN && !n.matches()) %7B%0A                throw newDatatypeException(%22The text %5Cu201c%22 + m.group(1)%0A                        + %22%5Cu201d does not appear to be a valid%22%0A                        + %22 base64-encoded string.%22
+try %7B%0A                new Base64Value(m.group(1));%0A            %7D catch (IllegalArgumentException e) %7B%0A                throw newDatatypeException(e.getMessage()
 , WA
@@ -2625,32 +2625,32 @@
  getPattern() %7B%0A
+
         return T
@@ -2672,271 +2672,8 @@
  %7D%0A%0A
-    /**%0A     * Returns the full regexp for this datatype.%0A     *%0A     * @return the full regexp for this datatype%0A     * @see nu.validator.datatype.AbstractDatetime#getPattern()%0A     */%0A    protected Pattern getFullPattern() %7B%0A        return FULL_PATTERN;%0A    %7D%0A%0A
     

Use Shape Base64Value class for "integrity" check