From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD,
	FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4
X-Received: by 2002:a5d:9801:: with SMTP id a1mr5110445iol.31.1543283265494;
        Mon, 26 Nov 2018 17:47:45 -0800 (PST)
X-Received: by 2002:a9d:5403:: with SMTP id j3mr465860oth.2.1543283265345;
 Mon, 26 Nov 2018 17:47:45 -0800 (PST)
Path: 
 eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!news.gegeweb.eu!gegeweb.org!usenet-fr.net!proxad.net!feeder1-2.proxad.net!209.85.166.215.MISMATCH!k10no124651itk.0!news-out.google.com!y103-v6ni86ita.0!nntp.google.com!q69no124594itb.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Mon, 26 Nov 2018 17:47:45 -0800 (PST)
In-Reply-To: <9524b3ee-476f-4af6-ab83-b15a6c2a417c@googlegroups.com>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=151.249.135.130;
 posting-account=M7mWIgoAAACGA_Fxpu1-vAqIUttmwREB
NNTP-Posting-Host: 151.249.135.130
References: <9524b3ee-476f-4af6-ab83-b15a6c2a417c@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <e79e6278-4ea5-4eb2-a8b1-f9750ff979c4@googlegroups.com>
Subject: Re: GNATCOLL JSON Parsing
From: eduardsapotski@gmail.com
Injection-Date: Tue, 27 Nov 2018 01:47:45 +0000
Content-Type: text/plain; charset="UTF-8"
Xref: reader01.eternal-september.org comp.lang.ada:54908
Date: 2018-11-26T17:47:45-08:00
List-Id: <comp.lang.ada>

There is no limit to human stupidity. 
I spent two days studying different ada-libs to parse json.
It ended up by myself wrote function in 40 lines. Spent one hour.

   function Get_Pair_Settings return Pair_Settings_Vector_Package.Vector is
      package List_Strings is new Vectors(Count_Type, Unbounded_String);
      JSON_Text : Unbounded_String := Message_Body(Get("http://api.exmo.com/v1/pair_settings"));
      S         : Unbounded_String := Null_Unbounded_String;
      List      : List_Strings.Vector;
      Count     : Count_Type := 0;
      Result    : Pair_Settings_Vector_Package.Vector;
   begin     
      for i in 1 .. Length(JSON_Text) loop
         if Element(JSON_Text, i) /= ' ' 
           and Element(JSON_Text, i) /= '{'
           and Element(JSON_Text, i) /= '}'
           and Element(JSON_Text, i) /= '"'
         then
            if Element(JSON_Text, i) = ',' or Element(JSON_Text, i) = ':' then              
               List.Append(S);
               S := Null_Unbounded_String;
            else
               Append(S, Element(JSON_Text, i));                   
            end if;            
         end if; 
      end loop;
      List.Append(S);
      
      while Count <= List.Length - 1 loop
         declare
            PS : Pair_Setting;
         begin
            PS.Pair_ID      := List.Element(Count);
            PS.Min_Quantity := Money_Type'Value(To_String(List.Element(Count + 2)));
            PS.Max_Quantity := Money_Type'Value(To_String(List.Element(Count + 4)));
            PS.Min_Price    := Money_Type'Value(To_String(List.Element(Count + 6)));
            PS.Max_Price    := Money_Type'Value(To_String(List.Element(Count + 8)));
            PS.Max_Amount   := Money_Type'Value(To_String(List.Element(Count + 10)));
            PS.Min_Amount   := Money_Type'Value(To_String(List.Element(Count + 12)));
            
            Result.Append(PS);
         end;
         Count := Count + 13;
      end loop;
     
      return Result; 
   end;