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• JsonUtils.java

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com.intuit.karate.JsonUtils Maven / Gradle / Ivy

/*
 * The MIT License
 *
 * Copyright 2020 Intuit Inc.
 *
 * 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 com.intuit.karate;

import com.intuit.karate.core.Variable;
import com.jayway.jsonpath.Configuration;
import com.jayway.jsonpath.Option;
import com.jayway.jsonpath.spi.json.JsonProvider;
import com.jayway.jsonpath.spi.json.JsonSmartJsonProvider;
import com.jayway.jsonpath.spi.mapper.JsonSmartMappingProvider;
import com.jayway.jsonpath.spi.mapper.MappingProvider;
import de.siegmar.fastcsv.reader.CsvContainer;
import de.siegmar.fastcsv.reader.CsvReader;
import de.siegmar.fastcsv.reader.CsvRow;
import de.siegmar.fastcsv.writer.CsvWriter;
import java.io.StringReader;
import java.io.StringWriter;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collections;
import java.util.EnumSet;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import net.minidev.json.JSONStyle;
import net.minidev.json.JSONValue;
import net.minidev.json.parser.JSONParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.SafeConstructor;

/**
 *
 * @author pthomas3
 */
public class JsonUtils {

    private static final Logger logger = LoggerFactory.getLogger(JsonUtils.class);

    private JsonUtils() {
        // only static methods
    }

    static {
        // ensure that even if jackson (databind?) is on the classpath, don't switch provider
        Configuration.setDefaults(new Configuration.Defaults() {
            private final JsonProvider jsonProvider = new JsonSmartJsonProvider();
            private final MappingProvider mappingProvider = new JsonSmartMappingProvider();

            @Override
            public JsonProvider jsonProvider() {
                return jsonProvider;
            }

            @Override
            public MappingProvider mappingProvider() {
                return mappingProvider;
            }

            @Override
            public Set options() {
                return EnumSet.noneOf(Option.class);
            }
        });
    }

    public static boolean isJson(String s) {
        if (s == null || s.isEmpty()) {
            return false;
        }
        if (s.charAt(0) == ' ') {
            s = s.trim();
            if (s.isEmpty()) {
                return false;
            }
        }
        return s.charAt(0) == '{' || s.charAt(0) == '[';
    }

    public static String toStrictJson(String raw) {
        JSONParser jp = new JSONParser(JSONParser.MODE_PERMISSIVE);
        try {
            Object o = jp.parse(raw);
            return JSONValue.toJSONString(o);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static String toJson(Object o) {
        return toJson(o, false);
    }

    public static String toJson(Object o, boolean pretty) {
        if (!pretty) { // TODO use JSONStyleIdent in json-smart 2.4
            try {
                return JSONValue.toJSONString(o);
            } catch (Throwable t) {
                logger.warn("object to json serialization failure, trying alternate approach: {}", t.getMessage());
            }
        }
        return JsonUtils.toJsonSafe(o, pretty);
    }

    public static byte[] toJsonBytes(Object o) {
        return toJson(o).getBytes(StandardCharsets.UTF_8);
    }

    public static Object fromJson(String json) {
        return JSONValue.parse(json);
    }

    public static Object fromJsonStrict(String json) {
        JSONParser parser = new JSONParser(JSONParser.MODE_RFC4627);
        try {
            return parser.parse(json.trim());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static Object fromJson(String s, String className) {
        try {
            Class clazz = Class.forName(className);
            return JSONValue.parse(s, clazz);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static  T fromJson(String s, Class clazz) {
        return (T) fromJson(s, clazz.getName());
    }

    public static Object fromYaml(String raw) {
        Yaml yaml = new Yaml(new SafeConstructor());
        return yaml.load(raw);
    }

    public static List