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Diffstat (limited to 'sourcemod/scripting/include/json.inc')
| -rw-r--r-- | sourcemod/scripting/include/json.inc | 473 |
1 files changed, 0 insertions, 473 deletions
diff --git a/sourcemod/scripting/include/json.inc b/sourcemod/scripting/include/json.inc deleted file mode 100644 index ebc46e4..0000000 --- a/sourcemod/scripting/include/json.inc +++ /dev/null @@ -1,473 +0,0 @@ -/** - * vim: set ts=4 : - * ============================================================================= - * sm-json - * Provides a pure SourcePawn implementation of JSON encoding and decoding. - * https://github.com/clugg/sm-json - * - * sm-json (C)2019 James Dickens. (clug) - * SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved. - * ============================================================================= - * - * This program is free software; you can redistribute it and/or modify it under - * the terms of the GNU General Public License, version 3.0, as published by the - * Free Software Foundation. - * - * 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, see <http://www.gnu.org/licenses/>. - * - * As a special exception, AlliedModders LLC gives you permission to link the - * code of this program (as well as its derivative works) to "Half-Life 2," the - * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software - * by the Valve Corporation. You must obey the GNU General Public License in - * all respects for all other code used. Additionally, AlliedModders LLC grants - * this exception to all derivative works. AlliedModders LLC defines further - * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007), - * or <http://www.sourcemod.net/license.php>. - */ - -#if defined _json_included - #endinput -#endif -#define _json_included - -#include <string> -#include <json/definitions> -#include <json/helpers/decode> -#include <json/helpers/encode> -#include <json/helpers/string> -#include <json/object> - -/** - * Encodes a JSON instance into its string representation. - * - * @param obj Object to encode. - * @param output String buffer to store output. - * @param max_size Maximum size of string buffer. - * @param pretty_print Should the output be pretty printed (newlines and spaces)? [default: false] - * @param depth The current depth of the encoder. [default: 0] - */ -stock void json_encode( - JSON_Object obj, - char[] output, - int max_size, - bool pretty_print = false, - int depth = 0 -) -{ - bool is_array = obj.IsArray; - bool is_empty = true; - int builder_size; - - // used in key iterator - int str_length = 1; - int int_value; - int cell_length = 0; - - StringMapSnapshot snap = null; - int json_size = 0; - if (is_array) { - json_size = obj.CurrentIndex; - - strcopy(output, max_size, "["); - } else { - snap = obj.Snapshot(); - json_size = snap.Length; - - strcopy(output, max_size, "{"); - } - - int key_length = 0; - for (int i = 0; i < json_size; ++i) { - key_length = (is_array) ? JSON_INDEX_BUFFER_SIZE : snap.KeyBufferSize(i); - char[] key = new char[key_length]; - - if (is_array) { - obj.GetIndexString(key, key_length, i); - } else { - snap.GetKey(i, key, key_length); - } - - // skip meta-keys - if (json_is_meta_key(key)) { - continue; - } - - // skip keys that are marked as hidden - if (obj.GetKeyHidden(key)) { - continue; - } - - JSON_CELL_TYPE type = obj.GetKeyType(key); - // skip keys of unknown type - if (type == Type_Invalid) { - continue; - } - - // if we are dealing with a string, prepare the str_value variable for fetching - if (type == Type_String) { - str_length = obj.GetKeyLength(key); - } - char[] str_value = new char[str_length + 1]; - - // determine the length of the char[] needed to represent our cell data - cell_length = 0; - switch (type) { - case Type_String: { - // get the string value early, as its cell_length is determined by its contents - obj.GetString(key, str_value, str_length + 1); - cell_length = json_cell_string_size(str_length); - } - case Type_Int: { - // get the int value early, as its cell_length is determined by its contents - int_value = obj.GetInt(key); - cell_length = json_cell_int_size(int_value); - } - case Type_Float: { - cell_length = json_cell_float_size(); - } - case Type_Bool: { - cell_length = json_cell_bool_size(); - } - case Type_Null: { - cell_length = json_cell_null_size(); - } - case Type_Object: { - cell_length = max_size; - } - } - - // fit the contents into the cell - char[] cell = new char[cell_length]; - switch (type) { - case Type_String: { - json_cell_string(str_value, cell, cell_length); - } - case Type_Int: { - json_cell_int(int_value, cell, cell_length); - } - case Type_Float: { - float value = obj.GetFloat(key); - json_cell_float(value, cell, cell_length); - } - case Type_Bool: { - bool value = obj.GetBool(key); - json_cell_bool(value, cell, cell_length); - } - case Type_Null: { - json_cell_null(cell, cell_length); - } - case Type_Object: { - JSON_Object child = obj.GetObject(key); - json_encode(child, cell, cell_length, pretty_print, depth + 1); - } - } - - // make the builder fit our key:value - // use previously determined cell length and + 1 for , - builder_size = cell_length + 1; - if (! is_array) { - // get the length of the key and + 1 for : - builder_size += json_cell_string_size(strlen(key)) + 1; - - if (pretty_print) { - builder_size += strlen(JSON_PP_AFTER_COLON); - } - } - - char[] builder = new char[builder_size]; - strcopy(builder, builder_size, ""); - - // add the key if we're working with an object - if (! is_array) { - json_cell_string(key, builder, builder_size); - StrCat(builder, builder_size, ":"); - - if (pretty_print) { - StrCat(builder, builder_size, JSON_PP_AFTER_COLON); - } - } - - // add the value and a trailing comma - StrCat(builder, builder_size, cell); - StrCat(builder, builder_size, ","); - - // prepare pretty printing then send builder to output afterwards - if (pretty_print) { - StrCat(output, max_size, JSON_PP_NEWLINE); - - for (int j = 0; j < depth + 1; ++j) { - StrCat(output, max_size, JSON_PP_INDENT); - } - } - - StrCat(output, max_size, builder); - - is_empty = false; - } - - if (snap != null) { - delete snap; - } - - if (! is_empty) { - // remove the final comma - output[strlen(output) - 1] = '\0'; - - if (pretty_print) { - StrCat(output, max_size, JSON_PP_NEWLINE); - - for (int j = 0; j < depth; ++j) { - StrCat(output, max_size, JSON_PP_INDENT); - } - } - } - - // append closing bracket - StrCat(output, max_size, (is_array) ? "]" : "}"); -} - -/** - * Decodes a JSON string into a JSON instance. - * - * @param buffer Buffer to decode. - * @param result Object to store output in. Setting this allows loading over - * an existing JSON instance, 'refreshing' it as opposed to - * creating a new one. [default: null] - * @param pos Current position of the decoder as a bytes offset into the buffer. - * @param depth Current depth of the decoder as child elements in the object. - * @returns JSON instance or null if decoding failed (buffer didn't contain valid JSON). - */ -stock JSON_Object json_decode( - const char[] buffer, - JSON_Object result = null, - int &pos = 0, - int depth = 0 -) -{ - int length = strlen(buffer); - bool is_array = false; - - // skip preceding whitespace - if (! json_skip_whitespace(buffer, length, pos)) { - LogError("json_decode: buffer ended early at position %d", pos); - - return null; - } - - if (json_is_object(buffer[pos])) { - is_array = false; - } else if (json_is_array(buffer[pos])) { - is_array = true; - } else { - LogError("json_decode: character not identified as object or array at position %d", pos); - - return null; - } - - if (result == null) { - result = new JSON_Object(is_array); - } - - bool empty_checked = false; - char[] key = new char[length]; - char[] cell = new char[length]; - - // while we haven't reached the end of our structure - while (! is_array && ! json_is_object_end(buffer[pos]) - || is_array && ! json_is_array_end(buffer[pos])) { - // pos is either an opening structure or comma, so increment past it - ++pos; - - // skip any whitespace preceding the element - if (! json_skip_whitespace(buffer, length, pos)) { - LogError("json_decode: buffer ended early at position %d", pos); - - return null; - } - - // if we are at the end of an object or array - // and haven't checked for empty yet, we can stop here (empty structure) - if ((! is_array && json_is_object_end(buffer[pos]) - || is_array && json_is_array_end(buffer[pos])) - && ! empty_checked) { - break; - } - - empty_checked = true; - - // if dealing with an object, look for the key - if (! is_array) { - if (! json_is_string(buffer[pos])) { - LogError("json_decode: expected key string at position %d", pos); - - return null; - } - - // extract the key from the buffer - json_extract_string(buffer, length, pos, key, length, is_array); - - // skip any whitespace following the key - if (! json_skip_whitespace(buffer, length, pos)) { - LogError("json_decode: buffer ended early at position %d", pos); - - return null; - } - - // ensure that we find a colon - if (buffer[pos++] != ':') { - LogError("json_decode: expected colon after key at position %d", pos); - - return null; - } - - // skip any whitespace following the colon - if (! json_skip_whitespace(buffer, length, pos)) { - LogError("json_decode: buffer ended early at position %d", pos); - - return null; - } - } - - if (json_is_object(buffer[pos]) || json_is_array(buffer[pos])) { - // if we are dealing with an object or array - // fetch the existing object if one exists at the key - JSON_Object current = (! is_array) ? result.GetObject(key) : null; - - // decode recursively - JSON_Object value = json_decode(buffer, current, pos, depth + 1); - - // decoding failed, error will be logged in json_decode - if (value == null) { - return null; - } - - if (is_array) { - result.PushObject(value); - } else { - result.SetObject(key, value); - } - } else if (json_is_string(buffer[pos])) { - // if we are dealing with a string, attempt to extract it - if (! json_extract_string(buffer, length, pos, cell, length, is_array)) { - LogError("json_decode: couldn't extract string at position %d", pos); - - return null; - } - - if (is_array) { - result.PushString(cell); - } else { - result.SetString(key, cell); - } - } else { - if (! json_extract_until_end(buffer, length, pos, cell, length, is_array)) { - LogError("json_decode: couldn't extract until end at position %d", pos); - - return null; - } - - if (strlen(cell) == 0) { - LogError("json_decode: empty cell encountered at position %d", pos); - - return null; - } - - if (json_is_int(cell)) { - int value = json_extract_int(cell); - if (is_array) { - result.PushInt(value); - } else { - result.SetInt(key, value); - } - } else if (json_is_float(cell)) { - float value = json_extract_float(cell); - if (is_array) { - result.PushFloat(value); - } else { - result.SetFloat(key, value); - } - } else if (json_is_bool(cell)) { - bool value = json_extract_bool(cell); - if (is_array) { - result.PushBool(value); - } else { - result.SetBool(key, value); - } - } else if (json_is_null(cell)) { - if (is_array) { - result.PushHandle(null); - } else { - result.SetHandle(key, null); - } - } else { - LogError("json_decode: unknown type encountered at position %d: %s", pos, cell); - - return null; - } - } - - if (! json_skip_whitespace(buffer, length, pos)) { - LogError("json_decode: buffer ended early at position %d", pos); - - return null; - } - } - - // skip remaining whitespace and ensure we're at the end of the buffer - ++pos; - if (json_skip_whitespace(buffer, length, pos) && depth == 0) { - LogError("json_decode: unexpected data after end of structure at position %d", pos); - - return null; - } - - return result; -} - -/** - * Recursively cleans up a JSON instance and any JSON instances stored within. - * - * @param obj JSON instance to clean up. - */ -stock void json_cleanup(JSON_Object obj) -{ - bool is_array = obj.IsArray; - - int key_length = 0; - StringMapSnapshot snap = obj.Snapshot(); - for (int i = 0; i < snap.Length; ++i) { - key_length = snap.KeyBufferSize(i); - char[] key = new char[key_length]; - - // ignore meta keys - snap.GetKey(i, key, key_length); - if (json_is_meta_key(key)) { - continue; - } - - // only clean up objects - JSON_CELL_TYPE type = obj.GetKeyType(key); - if (type != Type_Object) { - continue; - } - - JSON_Object nested_obj = obj.GetObject(key); - if (nested_obj != null) { - nested_obj.Cleanup(); - delete nested_obj; - } - } - - obj.Clear(); - delete snap; - - if (is_array) { - obj.SetValue(JSON_ARRAY_INDEX_KEY, 0); - } -} |