[Exolent[jNr]]

JSON for Pawn
by Exolent


Introduction
This is pretty much a useless include for 90% or more of you scripters.
I was bored one day and decided to write this up, but never got around to completing it as much as I wanted to or testing fully.
This include allows you to parse a JSON string into an object, read/set data from/to that object, create JSON objects, and encode a JSON object to string.
I didn't have much time to write up the documentation but it should be easy to understand.
This include will most likely only come in handy for sending/receiving data to/from a web server, such as a PHP script.


Include Information

#define JSON_KEY_SIZE   512
#define JSON_STR_SIZE   512

enum JSON
{
	JSON_INVALID = 0,
	
	JSON_Cell,
	JSON_Float,
	JSON_String,
	JSON_Object
};

// Create functions
JSON:json_create(bool:is_array=false)
JSON:json_from_array(const any:array[], size, JSON:types[]={JSON_INVALID}, JSON:force_type=JSON_INVALID)
JSON:json_from_array2(Array:array, size=-1, {Array,JSON}:types, bool:force_type=false)

// Set functions
bool:json_set_cell(JSON:object, const key[], any:value, JSON:type=JSON_Cell)
bool:json_set_array(JSON:object, const key[], const any:array[], size, JSON:types[]={JSON_INVALID}, JSON:force_type=JSON_INVALID)
bool:json_set_array2(JSON:object, const key[], Array:array, size=-1, bool:json_set_string(JSON:object, const key[], const string[])

// Get functions
bool:json_get_cell(JSON:object, const key[], &any:value, &JSON:type=JSON_Cell)
bool:json_get_array(JSON:object, const key[], any:output[], size, JSON:types[])
bool:json_get_array2(JSON:object, const key[], &Array:output, &size=0, &Array:types)
bool:json_get_string(JSON:object, const key[], output[], len)
JSON:json_get_type(JSON:object, const key[])

// Delete function
bool:json_delete(JSON:object, const key[])

// String functions
JSON:json_decode(const string[], &pos=0, len=0)
json_encode(JSON:object, output[], len)
json_escape(const string[], output[], len)

// Destroy function
bool:json_destroy(&JSON:object)

Notes
This is not fully tested. If you find any issues, please post them and I will get them fixed when I can.
New ideas are welcome if you have any.

More simple utilities like this to come when I get around to posting them.
I just don't want them to sit around and go to waste.

[K.K.Lv]

Wow !!!
nice one Exolent
example will be better.
PS: I'm poor in php

[xPaw]

Looks good, might use it with joropito's threaded http module. But the question is how fast are functions in this include?

[Exolent[jNr]]

Originally Posted by K.K.Lv Wow !!! nice one Exolent example will be better. PS: I'm poor in php

new iPlayers[ 32 ], iNum;
get_players( iPlayers, iNum );

new iPlayer;
new szName[ 32 ], szSteamID[ 35 ];

new JSON:jPlayers[ 32 ];
new JSON:jPlayer;

for( new i = 0; i < iNum; i++ )
{
    iPlayer = iPlayers[ i ];
    
    get_user_name( iPlayer, szName, charsmax( szName ) );
    get_user_authid( iPlayer, szSteamID, charsmax( szSteamID ) );
    
    jPlayer = json_create( );
    
    json_set_cell( jPlayer, "id", iPlayer );
    json_set_string( jPlayer, "name", szName );
    json_set_string( jPlayer, "steamid", szSteamID );
    
    jPlayers[ i ] = jPlayer;
}

new JSON:jObject = json_create( );
json_set_array( jObject, "players", jPlayers, iNum, _, JSON_Object );
json_set_cell( jObject, "num_players", iNum );

static szEncoded[ 4096 ];
json_encode( jObject, szEncoded, charsmax( szEncoded ) );

json_destroy( jObject );

// Send szEncoded to PHP script

// szEncoded should look like:
// {"players":[{"id":"1","name":"Exolent","steamid":"STEAM_0:1:2345"},{"id":"2","name":"xPaw","steamid":"STEAM_0:1:337"}],"num_players":"2"} 

PHP Code:

<?php

if(isset($_GET['json']))
{
    $json = json_decode($_GET['json']);
    
    var_dump($json);
}
?>

Originally Posted by xPaw Looks good, might use it with joropito's threaded http module. But the question is how fast are functions in this include?

Seeing as it's in stock form instead of a module, it is multiple times slower compared to Trie's or Array's get/set/create/delete/destroy functions.
However, this include is not supposed to act as any vault of some sort.

The purpose of this include is to create a JSON and set data to it, and read data from a given JSON string.
The longer the JSON string and larger the JSON object, the slower the encode and decode functions will be.

I can't see speed being a big issue here since the functions here aren't going to be frequently used or anything.
Anyway, a modular solution would most likely be better to reduce native calls for more efficiency.

[K.K.Lv]

"[{"id":"1","name":"Exolent","steamid":"STEAM_0:1:2345"},{"id":"2","name":"xPaw","steamid":"STEAM_0:1:337"}]"

I just need this data, how to do it ?

[Exolent[jNr]]

new JSON:jObject = json_create( );
json_set_array( jObject, "players", jPlayers, iNum, _, JSON_Object );
json_set_cell( jObject, "num_players", iNum );

new JSON:jObject = json_from_array( jPlayers, iNum, _, JSON_Object );

[Backstabnoob]

Holy crap. I remember needing to parse a JSON string the other day because it was being sent by a PHP script but I gave up on it. Thanks, definitely will use this.

[Scherzo]

Great job! Of course we can make own system, but also in web there are some interesting webservices responding in JSON, with socket module it will be powerful tool. I definitelly check it on weekend

[holycow]

Awesome! I can totally use this for a plugin that I have in mind!


Now I just gotta learn how to write plugins! LoL!

[ProIcons]

What about to encode a new Json of 10 players to this:

{"game":{"half":"2","map":"de_dust2","start": "1353160142","warmup":"0","live":"1","tax":"0 ","subon":"1","scorea":"16","scoreb":"10","ro und":"27","gid":"5719"},"players":{"1":{"weap on":"usp","ammoc":"12","ammob":"84","health": "100","kills":"20","deaths":"22","name":"Deez er","steamid":"STEAM_0:1:42725051","ip":"46.1 76.48.106","team":"beta"},"2":{"health":"100" ,"weapon":"ak47","ammoc":"5","ammob":"50","ki lls":"25","name":"s3rb","steamid":"STEAM_0:1: 37857416","ip":"87.202.131.9","team":"alpha", "deaths":"12"},"3":{"health":"100","weapon":" ak47","ammoc":"26","ammob":"90","deaths":"19" ,"name":"xop","steamid":"STEAM_0:13085614", "ip":"79.107.65.3","team":"alpha","kills":"8" },"4":{"weapon":"glock18","ammoc":"17","ammob ":"25","health":"100","name":"HAUS","steamid" :"STEAM_0:0:22337974","ip":"87.203.8.245","te am":"alpha","kills":"19","deaths":"6"},"5":{" weapon":"m4a1","ammoc":"21","ammob":"90","hea lth":"100","deaths":"22","name":"EL_","steami d":"STEAM_0:12035819","ip":"88.218.177.200" ,"team":"beta","kills":"11"},"6":{"health":"1 00","weapon":"knife","ammoc":"-1","ammob":"0","deaths":"10","kills":"23","na me":"Twister_","steamid":"STEAM_0:15641534" ,"ip":"85.73.174.124","team":"alpha"},"7":{"w eapon":"ak47","ammoc":"30","ammob":"61","heal th":"100","name":"zCPa","steamid":"STEAM_0:0: 20542090","ip":"77.49.247.207","team":"alpha" ,"kills":"13","deaths":"19"},"8":{"weapon":"m 4a1","ammoc":"17","ammob":"65","health":"100" ,"deaths":"16","name":"hysteria`","steamid":" STEAM_0:1:20054620","ip":"109.68.150.14","tea m":"beta","kills":"20"},"9":{"weapon":"ak47", "ammoc":"0","ammob":"60","health":"100","kill s":"5","deaths":"8","name":"galat","steamid": "STEAM_0:1:18355489","ip":"178.128.41.14","te am":"beta"},"10":{"weapon":"deagle","ammoc":" 0","ammob":"35","health":"100","deaths":"21", "name":"Jethro","steamid":"STEAM_0:08770723 ","ip":"79.107.140.28","team":"beta","kills": "10"},"11":{"name":"SiLOR","steamid":"STEAM_0 :0:46665629","ip":"79.166.2.207","team":"beta ","weapon":"ak47","ammoc":"14","ammob":"61"," health":"100","deaths":"13","kills":"10"},"12 ":{"weapon":"hegrenade","ammoc":"-1","ammob":"1","health":"100","kills":"6","na me":"nikolakis","steamid":"STEAM_0:0:21886849 ","ip":"85.75.160.114","team":"beta","deaths" :"7"},"13":{"name":"stoNg","steamid":"STEAM_0 :1:21642484","ip":"188.4.24.172","team":"beta ","weapon":"ak47","ammoc":"22","ammob":"90"," health":"100","kills":"9","deaths":"4"}},"inf o":{"players":13}}

On every Event CurWeapon / client_damage

Will be laggy?