path: root/libs/libjson/src/libJSON.cpp

/*

Miranda NG: the free IM client for Microsoft* Windows*

Copyright (c) 2012-17 Miranda NG project (https://miranda-ng.org),
Copyright (c) 2000-12 Miranda IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

This program 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 2
of the License, or (at your option) any later version.

This program is 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "stdafx.h"

#include <m_json.h>

/*
	This is the implementation of the C interface to libJSON
	This file may be included in any C++ application, but it will
	be completely ignored if JSON_LIBRARY isn't defined.  The
	only reason JSON_LIBRARY should be defined is when compiling libJSON
	as a library
*/

#include "JSONNode.h"
#include "JSONNode.inl"

#include "JSONWorker.h"

#ifdef JSON_MEMORY_MANAGE
	auto_expand StringHandler;
	auto_expand_node NodeHandler;
	#define MANAGER_INSERT(x) NodeHandler.insert(x)
#else
	#define MANAGER_INSERT(x) x
#endif

#ifdef JSON_SAFE
	static const json_char * EMPTY_CSTRING = JSON_TEXT("");
#endif

extern JSONNode nullNode;

inline wchar_t* toCString(const json_string & str)
{
	return mir_utf8decodeW( str.c_str());
}

/*
	stuff that's in namespace libJSON
*/

LIBJSON_DLL(void) json_free(void *str) {
	JSON_ASSERT_SAFE(str, JSON_TEXT("freeing null ptr"), return;);
	#ifdef JSON_MEMORY_MANAGE
		StringHandler.remove(str);
	#endif
	libjson_free<void>(str);
}

LIBJSON_DLL(void) json_delete(JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("deleting null ptr"), return;);
	#ifdef JSON_MEMORY_MANAGE
		NodeHandler.remove(node);
	#endif
	JSONNode::deleteJSONNode((JSONNode *)node);
}

#ifdef JSON_MEMORY_MANAGE
	LIBJSON_DLL(void) json_free_all(void) {
		StringHandler.clear();
	}

	LIBJSON_DLL(void) json_delete_all(void) {
		NodeHandler.clear();
	}
#endif

JSONNode JSONNode::parse(const json_char *str)
{
	if (str == nullptr)
		return JSONNode();

	return JSONWorker::parse(str);
}

LIBJSON_DLL(JSONNode*) json_parse(const json_char *json) {
	JSON_ASSERT_SAFE(json, JSON_TEXT("null ptr to json_parse"), return 0;);
	try {
		//use this constructor to simply copy reference instead of copying the temp
		return MANAGER_INSERT(JSONNode::newJSONNode_Shallow(JSONWorker::parse(json)));
	} catch (std::invalid_argument) {}
	return 0;
}

LIBJSON_DLL(wchar_t*) json_strip_white_space(const json_char *json) {
	JSON_ASSERT_SAFE(json, JSON_TEXT("null ptr to json_strip_white_space"), return 0;);
	return toCString(JSONWorker::RemoveWhiteSpaceAndComments(json));
}

#ifdef JSON_VALIDATE
	LIBJSON_DLL(JSONNode*) json_validate(const json_char *json) {
		JSON_ASSERT_SAFE(json, JSON_TEXT("null ptr to json_validate"), return 0;);
		try {
			//use this constructor to simply copy reference instead of copying the temp
			return MANAGER_INSERT(JSONNode::newJSONNode_Shallow(JSONWorker::validate(json)));
		} catch (std::invalid_argument) {}
		return 0;
	}
#endif

#if defined JSON_DEBUG && !defined JSON_STDERROR
	//When libjson errors, a callback allows the user to know what went wrong
	LIBJSON_DLL(void) json_register_debug_callback(json_error_callback_t callback) {
		JSONDebug::register_callback(callback);
	}
#endif

#ifdef JSON_MUTEX_CALLBACKS
	#ifdef JSON_MUTEX_MANAGE
		LIBJSON_DLL(void) json_register_mutex_callbacks(json_mutex_callback_t lock, json_mutex_callback_t unlock, json_mutex_callback_t destroy, void * manager_lock) {
			JSONNode::register_mutex_callbacks(lock, unlock, manager_lock);
			JSONNode::register_mutex_destructor(destroy);
		}

	#else
		LIBJSON_DLL(void) json_register_mutex_callbacks(json_mutex_callback_t lock, json_mutex_callback_t unlock, void * manager_lock) {
			JSONNode::register_mutex_callbacks(lock, unlock, manager_lock);
		}
	#endif

	LIBJSON_DLL(void) json_set_global_mutex(void * mutex) {
		JSONNode::set_global_mutex(mutex);
	}

	LIBJSON_DLL(void) json_set_mutex(JSONNode *node, void * mutex) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_mutex"), return;);
		node->set_mutex(mutex);
	}

	LIBJSON_DLL(void) json_lock(JSONNode *node, int threadid) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_lock"), return;);
		node->lock(threadid);
	}

	LIBJSON_DLL(void) json_unlock(JSONNode *node, int threadid) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_unlock"), return;);
		node->unlock(threadid);
	}
#endif

/*
stuff that's in class JSONNode
*/
//ctors
LIBJSON_DLL(JSONNode*) json_new_a(const json_char *name, const json_char *value) {
	JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_new_a"), name = EMPTY_CSTRING;);
	JSON_ASSERT_SAFE(value, JSON_TEXT("null value to json_new_a"), value = EMPTY_CSTRING;);
	#ifdef JSON_MEMORY_CALLBACKS
		return MANAGER_INSERT(new(json_malloc<JSONNode>(1)) JSONNode(name, json_string(value)));
	#else
		return MANAGER_INSERT(new JSONNode(name, json_string(value)));
	#endif
}

LIBJSON_DLL(JSONNode*) json_new_i(const json_char *name, long value) {
	JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_new_i"), name = EMPTY_CSTRING;);
	#ifdef JSON_MEMORY_CALLBACKS
		return MANAGER_INSERT(new(json_malloc<JSONNode>(1)) JSONNode(name, value));
	#else
		return MANAGER_INSERT(new JSONNode(name, value));
	#endif
}

LIBJSON_DLL(JSONNode*) json_new_f(const json_char *name, double value) {
	JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_new_f"), name = EMPTY_CSTRING;);
	#ifdef JSON_MEMORY_CALLBACKS
		return MANAGER_INSERT(new(json_malloc<JSONNode>(1)) JSONNode(name, value));
	#else
		return MANAGER_INSERT(new JSONNode(name, value));
	#endif
}

LIBJSON_DLL(JSONNode*) json_new_b(const json_char *name, int value) {
	JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_new_b"), name = EMPTY_CSTRING;);
	#ifdef JSON_MEMORY_CALLBACKS
		return MANAGER_INSERT(new(json_malloc<JSONNode>(1)) JSONNode(name, value != 0 ));
	#else
		return MANAGER_INSERT(new JSONNode(name, value != 0));
	#endif
}

LIBJSON_DLL(JSONNode*) json_new(char type) {
	#ifdef JSON_MEMORY_CALLBACKS
		return MANAGER_INSERT(new(json_malloc<JSONNode>(1)) JSONNode(type));
	#else
		return MANAGER_INSERT(new JSONNode(type));
	#endif
}

LIBJSON_DLL(JSONNode*) json_copy(const JSONNode *orig) {
	JSON_ASSERT_SAFE(orig, JSON_TEXT("null orig to json_copy"), return 0;);
	#ifdef JSON_MEMORY_CALLBACKS
		return MANAGER_INSERT(new(json_malloc<JSONNode>(1)) JSONNode(*orig));
	#else
		return MANAGER_INSERT(new JSONNode(*orig));
	#endif
}

LIBJSON_DLL(JSONNode*) json_duplicate(const JSONNode *orig) {
	JSON_ASSERT_SAFE(orig, JSON_TEXT("null orig to json_duplicate"), return 0;);
	return MANAGER_INSERT(JSONNode::newJSONNode_Shallow(orig->duplicate()));
}

//assignment
LIBJSON_DLL(void) json_set_a(JSONNode *node, const json_char *value) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_a"), return;);
	JSON_ASSERT_SAFE(value, JSON_TEXT("null value to json_set_a"), value = EMPTY_CSTRING;);
	*node = json_string(value);
}

LIBJSON_DLL(void) json_set_i(JSONNode *node, long value) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_i"), return;);
	*node = value;
}

LIBJSON_DLL(void) json_set_f(JSONNode *node, double value) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_f"), return;);
	*node = value;
}

LIBJSON_DLL(void) json_set_b(JSONNode *node, int value) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_b"), return;);
	*node = value != 0;
}

LIBJSON_DLL(void) json_set_n(JSONNode *node, const JSONNode *orig) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_n"), return;);
	JSON_ASSERT_SAFE(orig, JSON_TEXT("null node to json_set_n"), return;);
	*node = *orig;
}

//inspectors
LIBJSON_DLL(char) json_type(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_type"), return JSON_NULL;);
	return node->type();
}

LIBJSON_DLL(json_index_t) json_size(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_size"), return 0;);
	return node->size();
}

LIBJSON_DLL(int) json_empty(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_empty"), return true;);
	return (int)(node->empty());
}

LIBJSON_DLL(const json_char*) json_name(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_name"), return EMPTY_CSTRING;);
	return node->name();
}

#ifdef JSON_COMMENTS
	LIBJSON_DLL(json_char*) json_get_comment(const JSONNode *node) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_get_comment"), return toCString(EMPTY_CSTRING););
		return toCString(node->get_comment());
	}
#endif

LIBJSON_DLL(wchar_t*) json_as_string(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_as_string"), return toCString(EMPTY_CSTRING););
	return toCString(node->as_string());
}

LIBJSON_DLL(long) json_as_int(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_as_int"), return 0;);
	return node->as_int();
}

LIBJSON_DLL(double) json_as_float(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_as_float"), return 0.0;);
	return node->as_float();
}

LIBJSON_DLL(int) json_as_bool(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_as_bool"), return false;);
	return (int)(node->as_bool());
}

LIBJSON_DLL(JSONNode*) json_as_node(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_as_node"), return 0;);
	return MANAGER_INSERT(JSONNode::newJSONNode_Shallow(node->as_node()));
}

LIBJSON_DLL(JSONNode*) json_as_array(const JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_as_array"), return 0;);
	return MANAGER_INSERT(JSONNode::newJSONNode_Shallow(node->as_array()));
}

#ifdef JSON_BINARY
	void * json_as_binary(const JSONNode *node, unsigned long * size) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_as_binary"), if (size) {*size = 0;} return 0;);
		const std::string result = node->as_binary();
		const size_t len = result.length();
		if (size) *size = len;
		#ifdef JSON_SAFE
			if (result.empty()) return 0;
		#endif
		#ifdef JSON_MEMORY_MANAGE
			return StringHandler.insert(memcpy(json_malloc<char>(len), result.data(), len));
		#else
			return memcpy(json_malloc<char>(len), result.data(), len);
		#endif
	}
#endif

#ifdef JSON_WRITER
	LIBJSON_DLL(wchar_t*) json_write(const JSONNode *node) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_write"), return toCString(EMPTY_CSTRING););
		return toCString(node->write());
	}

	LIBJSON_DLL(wchar_t*) json_write_formatted(const JSONNode *node) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_write_formatted"), return toCString(EMPTY_CSTRING););
		return toCString(node->write_formatted());
	}
#endif

//modifiers
LIBJSON_DLL(void) json_set_name(JSONNode *node, const json_char *name) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_name"), return;);
	JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_set_name"), name = EMPTY_CSTRING;);
	node->set_name(name);
}

#ifdef JSON_COMMENTS
	LIBJSON_DLL(void) json_set_comment(JSONNode *node, const json_char * comment) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_set_comment"), return;);
		JSON_ASSERT_SAFE(comment, JSON_TEXT("null name to json_set_comment"), comment = EMPTY_CSTRING;);
		node->set_comment(comment);
	}
#endif

LIBJSON_DLL(void) json_clear(JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_clear"), return;);
	node->clear();
}

LIBJSON_DLL(void) json_nullify(JSONNode *node) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_nullify"), return;);
	node->nullify();
}

LIBJSON_DLL(void) json_swap(JSONNode *node, JSONNode *node2) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_swap"), return;);
	JSON_ASSERT_SAFE(node2, JSON_TEXT("null node to json_swap"), return;);
	node->swap(*node2);
}

LIBJSON_DLL(void) json_merge(JSONNode *node, JSONNode *node2) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_merge"), return;);
	JSON_ASSERT_SAFE(node2, JSON_TEXT("null node to json_merge"), return;);
	node->merge(*node2);
}

#ifndef JSON_PREPARSE
	LIBJSON_DLL(void) json_preparse(JSONNode *node) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_preparse"), return;);
		node->preparse();
	}
#endif

#ifdef JSON_BINARY
	LIBJSON_DLL(void) json_set_binary(JSONNode *node, const void * data, unsigned long length) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_swap"), return;);
		JSON_ASSERT_SAFE(data, JSON_TEXT("null data to json_set_binary"), *node = EMPTY_CSTRING; return;);
		node->set_binary((unsigned char *)data, length);
	}
#endif

LIBJSON_DLL(void) json_cast(JSONNode *node, char type) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_cast"), return;);
	node->cast(type);
}

//children access
LIBJSON_DLL(void) json_reserve(JSONNode *node, json_index_t siz) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_reserve"), return;);
	node->reserve(siz);
}

LIBJSON_DLL(JSONNode*) json_at(JSONNode *node, json_index_t pos) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_at"), return 0;);
	JSONNode &res = node->at(pos);
	return (&res == &nullNode) ? NULL : &res;
}

LIBJSON_DLL(JSONNode*) json_get(JSONNode *node, const json_char *name) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_get"), return 0;);
	JSON_ASSERT_SAFE(name, JSON_TEXT("null node to json_get.  Did you mean to use json_at?"), return 0;);
	JSONNode &res = node->at(name);
	return (&res == &nullNode) ? NULL : &res;
}

#ifdef JSON_CASE_INSENSITIVE_FUNCTIONS
	LIBJSON_DLL(JSONNode*) json_get_nocase(JSONNode *node, const json_char *name) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_at_nocase"), return 0;);
		JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_at_nocase"), return 0;);
		try {
			return &node->at_nocase(name);
		} catch (std::out_of_range) {}
		return 0;
	}

	LIBJSON_DLL(JSONNode*) json_pop_back_nocase(JSONNode *node, const json_char *name) {
		JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_pop_back_nocase"), return 0;);
		JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_pop_back_nocase"), return 0;);
		return MANAGER_INSERT(node->pop_back_nocase(name));
	}
#endif

LIBJSON_DLL(void) json_push_back(JSONNode *node, JSONNode *node2) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_push_back"), return;);
	JSON_ASSERT_SAFE(node2, JSON_TEXT("null node2 to json_push_back"), return;);
	#ifdef JSON_MEMORY_MANAGE
		NodeHandler.remove(node2);
	#endif
	node->push_back(*node2);
}

LIBJSON_DLL(JSONNode*) json_pop_back_at(JSONNode *node, json_index_t pos) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_pop_back_i"), return 0;);
	return MANAGER_INSERT(node->pop_back(pos));
}

LIBJSON_DLL(JSONNode*) json_pop_back(JSONNode *node, const json_char *name) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_pop_back"), return 0;);
	JSON_ASSERT_SAFE(name, JSON_TEXT("null name to json_pop_back.  Did you mean to use json_pop_back_at?"), return 0;);
	return MANAGER_INSERT(node->pop_back(name));
}

//comparison
LIBJSON_DLL(int) json_equal(JSONNode *node, JSONNode *node2) {
	JSON_ASSERT_SAFE(node, JSON_TEXT("null node to json_equal"), return false;);
	JSON_ASSERT_SAFE(node2, JSON_TEXT("null node2 to json_equal"), return false;);
	return *node == *node2;
}