/* ======================================================================== * PlantUML : a free UML diagram generator * ======================================================================== * * (C) Copyright 2009-2021, Arnaud Roques * * Project Info: http://plantuml.com * * If you like this project or if you find it useful, you can support us at: * * http://plantuml.com/patreon (only 1$ per month!) * http://plantuml.com/paypal * * This file is part of PlantUML. * * PlantUML is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * PlantUML distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public * License for more details. * * You should have received a copy of the GNU General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * * Original Author: Arnaud Roques * */ package net.sourceforge.plantuml.tim.stdlib; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.List; import java.util.Map; import java.util.Set; import net.sourceforge.plantuml.FileSystem; import net.sourceforge.plantuml.FileUtils; import net.sourceforge.plantuml.LineLocation; import net.sourceforge.plantuml.json.Json; import net.sourceforge.plantuml.json.JsonValue; import net.sourceforge.plantuml.json.ParseException; import net.sourceforge.plantuml.security.SFile; import net.sourceforge.plantuml.security.SURL; import net.sourceforge.plantuml.tim.EaterException; import net.sourceforge.plantuml.tim.EaterExceptionLocated; import net.sourceforge.plantuml.tim.TContext; import net.sourceforge.plantuml.tim.TFunctionSignature; import net.sourceforge.plantuml.tim.TMemory; import net.sourceforge.plantuml.tim.expression.TValue; /** * Loads JSON data from file or URL source. *
* Supports three parameters for datasource, default JSON value and charset. The * datasource will be checked against the security rules. *
* Examples: * *
* @ startuml * ' loads a local file * !$JSON_LOCAL_RELATIVE=%loadJSON("file.json") * * ' loads a local file from an absolute file path * !$JSON_LOCAL_ABS=%loadJSON("c:/loaded/data/file.json") * * ' tries to load a local file and returns an empty JSON * !$JSON_LOCAL_REL_EMPTY=%loadJSON("file-not-existing.json") * * ' tries to load a local file and returns an default JSON * !$DEF_JSON={"status":"No data found"} * !$JSON_LOCAL_REL_DEF=%loadJSON("file-not-existing.json", $DEF_JSON) * * ' loads a local file with a specific charset (default is UTF-8) * !$JSON_LOCAL_RELATIVE_CHARSET=%loadJSON("file.json", "{}", "iso-8859-1") * * ' loads a remote JSON from an endpoint (and default, if not reachable) * !$STATUS_NO_CONNECTION={"status": "No connection"} * !$JSON_REMOTE_DEF=%loadJSON("https://localhost:7778/management/health", $STATUS_NO_CONNECTION) * status -> $JSON_REMOTE_DEF.status * @ enduml ** * @author Aljoscha Rittner */ public class LoadJson extends SimpleReturnFunction { private static final String VALUE_CHARSET_DEFAULT = "UTF-8"; private static final String VALUE_DEFAULT_DEFAULT = "{}"; public TFunctionSignature getSignature() { return new TFunctionSignature("%loadJSON", 3); } public boolean canCover(int nbArg, Set