The json library

[Marcus]

I don't remember if I ever posted something about the json library in the old forum - the one that crashed. But it's very easy to use and can be used for saving and loading most n7 tables. You can read more about the file format here: https://en.wikipedia.org/wiki/JSON

Code:

' json_example.n7
' ---------------
' Using the json library you can turn "any" table into a json string. You can save this string to
' file and load it again to get an exact replica of the original table. So it's a very handy library
' and file format.

include "json.n7"

' Let's say you want to save the player's progress in a game.
data = []
data.lastSaved = time()
data.score = 1349
data.name = "Marcus"
data.level = 5
data.levelScores = [1439, 5131, 1486, 394]
data.position = [x: 10, y: 15]

' Create a file for saving.
f = createfile("savedata.json")
if file(f)
    ' Use JSON_ToString to create a json string and write it to the file.
    write file f, JSON_ToString(data)
    free file f
   
    ' Use JSON_FromFile (there's also JSON_FromString) to load the data into a variable.
    data = JSON_FromFile("savedata.json")
    ' Print out the information loaded from file.
    t = datetime(data.lastSaved)
    pln "lastSaved      = " + t.year + "-" + str(t.month, 2) + "-" + str(t.day, 2) +
            " " + str(t.hour, 2) + ":" + str(t.minute, 2) + ":" + str(t.second)
    pln "score          = " + data.score
    pln "name           = " + data.name
    pln "level          = " + data.level
    pln "levelScores[2] = " + data.levelScores[2]
    pln "position       = " + data.position.x + ", " + data.position.y
else
    pln "Couldn't create file!"
endif

system "pause"

Edit I wrote "most tables". You can assign functions to variabels in an n7 table, and json doesn't support that ofcourse.