113 lines
3.8 KiB
SourcePawn
113 lines
3.8 KiB
SourcePawn
/**
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* vim: set ts=4 :
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* =============================================================================
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* sm-json
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* Provides a pure SourcePawn implementation of JSON encoding and decoding.
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* https://github.com/clugg/sm-json
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*
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* sm-json (C)2018 James Dickens. (clug)
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* SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*/
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#if defined _json_definitions_included
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#endinput
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#endif
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#define _json_definitions_included
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#include <string>
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#include <json/string_helpers>
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// you may need to tinker with these for large objects/floating point numbers
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#define JSON_FLOAT_BUFFER_SIZE 32
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#define JSON_INDEX_BUFFER_SIZE 16
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// meta-key defines
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#define JSON_ARRAY_INDEX_KEY "__array_index"
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#define JSON_META_TYPE_KEY ":type"
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#define JSON_META_LENGTH_KEY ":length"
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#define JSON_META_HIDDEN_KEY ":hidden"
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// pretty print constants
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#define JSON_PP_AFTER_COLON " "
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#define JSON_PP_INDENT " "
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#define JSON_PP_NEWLINE "\n"
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/**
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* Types of cells within a JSON object
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*/
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enum JSON_CELL_TYPE {
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Type_Invalid = -1,
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Type_String = 0,
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Type_Int,
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Type_Float,
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Type_Bool,
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Type_Null,
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Type_Object
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};
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/**
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* Multi-dimensional char array mapping characters to their escaped form
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*/
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char JSON_STRING_NORMAL[][] = {"\\", "\"", "/", "\b", "\f", "\n", "\r", "\t" };
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char JSON_STRING_ESCAPED[][] = {"\\\\", "\\\"", "\\/", "\\b", "\\f", "\\n", "\\r", "\\t"};
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/**
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* Escapes a string based on the rules defined in json/definitions.inc
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*
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* @param buffer String buffer.
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* @param maxlength Maximum buffer length.
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*/
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public void json_escape_string(char[] buffer, int maxlen) {
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for (int i = 0; i < sizeof(JSON_STRING_NORMAL); ++i) {
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ReplaceString(buffer, maxlen, JSON_STRING_NORMAL[i], JSON_STRING_ESCAPED[i]);
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}
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}
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/**
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* Unescapes a string based on the rules defined in json/definitions.inc
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*
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* @param buffer String buffer.
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* @param maxlength Maximum buffer length.
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*/
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public void json_unescape_string(char[] buffer, int maxlen) {
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for (int i = 0; i < sizeof(JSON_STRING_NORMAL); ++i) {
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ReplaceString(buffer, maxlen, JSON_STRING_ESCAPED[i], JSON_STRING_NORMAL[i]);
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}
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}
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/**
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* Checks whether the key provided is an meta-key that
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* should only be used internally.
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*
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* @param key Key to check.
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* @returns True when it is a meta-key, false otherwise.
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*/
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stock bool json_is_meta_key(char[] key) {
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return json_string_endswith(key, JSON_META_TYPE_KEY)
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|| json_string_endswith(key, JSON_META_LENGTH_KEY)
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|| json_string_endswith(key, JSON_META_HIDDEN_KEY)
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|| StrEqual(key, JSON_ARRAY_INDEX_KEY);
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}
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