com.google.api.server.spi.response.EndpointsPrettyPrinter.java Source code

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Here is the source code for com.google.api.server.spi.response.EndpointsPrettyPrinter.java

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/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.api.server.spi.response;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;

import java.io.IOException;

/**
 * A {@link com.fasterxml.jackson.core.PrettyPrinter} that mimics legacy formatting.
 */
public class EndpointsPrettyPrinter extends DefaultPrettyPrinter {
    public EndpointsPrettyPrinter() {
        this(1);
    }

    public EndpointsPrettyPrinter(int spacesPerIndent) {
        SpaceIndenter indenter = new SpaceIndenter(spacesPerIndent);
        indentArraysWith(indenter);
        indentObjectsWith(indenter);
    }

    @Override
    public void writeObjectFieldValueSeparator(JsonGenerator jg) throws IOException {
        jg.writeRaw(": ");
    }

    @Override
    public EndpointsPrettyPrinter createInstance() {
        return this;
    }

    private static class SpaceIndenter implements Indenter {
        private final String indent;

        SpaceIndenter(int spacesPerIndent) {
            StringBuilder builder = new StringBuilder(spacesPerIndent);
            for (int i = 0; i < spacesPerIndent; i++) {
                builder.append(' ');
            }
            indent = builder.toString();
        }

        @Override
        public void writeIndentation(JsonGenerator jg, int level) throws IOException {
            jg.writeRaw('\n');
            for (int i = 0; i < level; i++) {
                jg.writeRaw(indent);
            }
        }

        @Override
        public boolean isInline() {
            return false;
        }
    }
}