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vcmi/lib/json/JsonUtils.h

94 lines
3.7 KiB
C++

/*
* JsonUtils.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
#include "JsonNode.h"
VCMI_LIB_NAMESPACE_BEGIN
namespace JsonUtils
{
/**
* @brief recursively merges source into dest, replacing identical fields
* struct : recursively calls this function
* arrays : each entry will be merged recursively
* values : value in source will replace value in dest
* null : if value in source is present but set to null it will delete entry in dest
* @note this function will destroy data in source
*/
DLL_LINKAGE void merge(JsonNode & dest, JsonNode & source, bool ignoreOverride = false, bool copyMeta = false);
/**
* @brief recursively merges source into dest, replacing identical fields
* struct : recursively calls this function
* arrays : each entry will be merged recursively
* values : value in source will replace value in dest
* null : if value in source is present but set to null it will delete entry in dest
* @note this function will preserve data stored in source by creating copy
*/
DLL_LINKAGE void mergeCopy(JsonNode & dest, JsonNode source, bool ignoreOverride = false, bool copyMeta = false);
/** @brief recursively merges descendant into copy of base node
* Result emulates inheritance semantic
*/
DLL_LINKAGE void inherit(JsonNode & descendant, const JsonNode & base);
/**
* @brief construct node representing the common structure of input nodes
* @param pruneEmpty - omit common properties whose intersection is empty
* different types: null
* struct: recursive intersect on common properties
* other: input if equal, null otherwise
*/
DLL_LINKAGE JsonNode intersect(const JsonNode & a, const JsonNode & b, bool pruneEmpty = true);
DLL_LINKAGE JsonNode intersect(const std::vector<JsonNode> & nodes, bool pruneEmpty = true);
/**
* @brief construct node representing the difference "node - base"
* merging difference with base gives node
*/
DLL_LINKAGE JsonNode difference(const JsonNode & node, const JsonNode & base);
/**
* @brief generate one Json structure from multiple files
* @param files - list of filenames with parts of json structure
*/
DLL_LINKAGE JsonNode assembleFromFiles(const std::vector<std::string> & files);
DLL_LINKAGE JsonNode assembleFromFiles(const std::vector<std::string> & files, bool & isValid);
/// This version loads all files with same name (overridden by mods)
DLL_LINKAGE JsonNode assembleFromFiles(const std::string & filename);
/**
* @brief removes all nodes that are identical to default entry in schema
* @param node - JsonNode to minimize
* @param schemaName - name of schema to use
* @note for minimizing data must be valid against given schema
*/
DLL_LINKAGE void minimize(JsonNode & node, const std::string & schemaName);
/// opposed to minimize, adds all missing, required entries that have default value
DLL_LINKAGE void maximize(JsonNode & node, const std::string & schemaName);
/**
* @brief validate node against specified schema
* @param node - JsonNode to check
* @param schemaName - name of schema to use
* @param dataName - some way to identify data (printed in console in case of errors)
* @returns true if data in node fully compilant with schema
*/
DLL_LINKAGE bool validate(const JsonNode & node, const std::string & schemaName, const std::string & dataName);
/// get schema by json URI: vcmi:<name of file in schemas directory>#<entry in file, optional>
/// example: schema "vcmi:settings" is used to check user settings
DLL_LINKAGE const JsonNode & getSchema(const std::string & URI);
}
VCMI_LIB_NAMESPACE_END