com.github.fge.jsonschema.core.keyword.syntax.checkers.hyperschema.MediaSyntaxChecker.java Source code

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Here is the source code for com.github.fge.jsonschema.core.keyword.syntax.checkers.hyperschema.MediaSyntaxChecker.java

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/*
 * Copyright (c) 2014, Francis Galiegue (fgaliegue@gmail.com)
 *
 * This software is dual-licensed under:
 *
 * - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
 *   later version;
 * - the Apache Software License (ASL) version 2.0.
 *
 * The text of this file and of both licenses is available at the root of this
 * project or, if you have the jar distribution, in directory META-INF/, under
 * the names LGPL-3.0.txt and ASL-2.0.txt respectively.
 *
 * Direct link to the sources:
 *
 * - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
 * - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
 */

package com.github.fge.jsonschema.core.keyword.syntax.checkers.hyperschema;

import com.fasterxml.jackson.databind.JsonNode;
import com.github.fge.jackson.NodeType;
import com.github.fge.jackson.jsonpointer.JsonPointer;
import com.github.fge.jsonschema.core.exceptions.ProcessingException;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.core.keyword.syntax.checkers.AbstractSyntaxChecker;
import com.github.fge.jsonschema.core.keyword.syntax.checkers.SyntaxChecker;
import com.github.fge.jsonschema.core.tree.SchemaTree;
import com.github.fge.msgsimple.bundle.MessageBundle;
import com.google.common.collect.ImmutableSet;
import com.google.common.net.MediaType;

import java.util.Collection;
import java.util.Set;

/**
 * Syntax checker for draft v4 hyperschema's {@code media} keyword
 */
public final class MediaSyntaxChecker extends AbstractSyntaxChecker {
    private static final String BINARY_ENCODING_FIELDNAME = "binaryEncoding";
    private static final String TYPE_FIELDNAME = "type";

    // FIXME: INCOMPLETE: excludes "x-token" and "ietf-token"
    private static final Set<String> BINARY_ENCODINGS = ImmutableSet.of("7bit", "8bit", "binary",
            "quoted-printable", "base64");

    private static final SyntaxChecker INSTANCE = new MediaSyntaxChecker();

    private MediaSyntaxChecker() {
        super("media", NodeType.OBJECT);
    }

    public static SyntaxChecker getInstance() {
        return INSTANCE;
    }

    @Override
    protected void checkValue(final Collection<JsonPointer> pointers, final MessageBundle bundle,
            final ProcessingReport report, final SchemaTree tree) throws ProcessingException {
        final JsonNode node = getNode(tree);
        JsonNode subNode;
        NodeType type;
        String value;

        subNode = node.path(BINARY_ENCODING_FIELDNAME);
        if (!subNode.isMissingNode()) {
            type = NodeType.getNodeType(subNode);
            value = subNode.textValue();
            if (value == null)
                report.error(newMsg(tree, bundle, "draftv4.media.binaryEncoding.incorrectType")
                        .put("expected", NodeType.STRING).putArgument("found", type));
            else if (!BINARY_ENCODINGS.contains(value.toLowerCase()))
                report.error(newMsg(tree, bundle, "draftv4.media.binaryEncoding.invalid")
                        .putArgument("value", value).putArgument("valid", BINARY_ENCODINGS));
        }

        subNode = node.path(TYPE_FIELDNAME);
        if (subNode.isMissingNode())
            return;
        type = NodeType.getNodeType(subNode);
        if (type != NodeType.STRING) {
            report.error(newMsg(tree, bundle, "draftv4.media.type.incorrectType").put("expected", NodeType.STRING)
                    .putArgument("found", type));
            return;
        }
        value = subNode.textValue();
        try {
            MediaType.parse(value);
        } catch (IllegalArgumentException ignored) {
            report.error(newMsg(tree, bundle, "draftv4.media.type.notMediaType").putArgument("value", value));
        }
    }
}