Libreoffice basic equivalent of VBA's "GET" url [closed]

edit

Thanks to everyone for the replies, will deeply check the links as soon as i can!

@Lupp: yes adding "Option VBAsupport 1" to the macro make it run in LO too, but looking forward to further improvements i want a LO basic native code to avoid eventual not support VBA related trouble later.

Update 4rd april: it's first time i can touch the macro since last post... (RL is killing my freetime) and found some links very useful (expecially pityonak guide is awesome!) and after a bit of reading and googleing i came up with this:

oSimpleFileAccess = com.sun.star.ucb.SimpleFileAccess
n = freefile()
Open CRESTlinkBuy For input As #n
    Do While not eof(n)     'execute while not at the end of file (eof)'
        input #n, buyquery 
        l = len(buyquery) 
        Numbers = "0123456789."    'tells to code what i`m seeking (#s including decimals)'
        Value = ""
        For i = 1 To l    'from first character till end of readed file chunk'  

            ActChar = mid(buyquery,i,1)   'mid function read each character'
                 ' of the file chunk (buyquery)...'

            If instr(Numbers,ActChar)<>0 Then Value = Value & ActChar   '...and instr'
                'function checks if Numbers contains then selected character, '
                'if so adds it to Value variable'  

            position = seek(n) 'return position of cursor in opened file'
            seek(n, position)

        Next i
    Loop
Close #n

Since json text uses commas to separate each data, i wrongly thought i could use the "input" function (that also stops reading at first comma) in conjunction with the "seek" function to move cursor within json and read next chunk of text :P Even if this is a failure i've learned a lot ! I didn't check all the links you gave me, hope to have time for that soon. Thx all again