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Re: Read in file to array.

Newsgroups comp.lang.javascript
Date 2017-01-23 06:26 -0800
References <2b6a77ee-b20d-4f11-bd56-c73f66523ec7@googlegroups.com> <015aa987-b329-446c-9fb9-b7c1317a7a39@googlegroups.com>
Message-ID <30277451-ca92-4bc3-b070-3ed4fd8d2dfc@googlegroups.com> (permalink)
Subject Re: Read in file to array.
From jonas.thornvall@gmail.com

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Den måndag 23 januari 2017 kl. 12:59:19 UTC+1 skrev jonas.t...@gmail.com:
> Den måndag 23 januari 2017 kl. 12:29:37 UTC+1 skrev jonas.t...@gmail.com:
> > Well i come so far i can save the graph data to a textfile i did go for "\r\n" as node/record separator and i use star "*" to separate data-items in each node/record.
> > 
> > So i end up with something like this in my textfile
> > 0*1,3,7*false*847*122*10*10*#F6A3D3*#F6A3D3
> > 1*0,5,6*false*950*370*10*10*#D3D85E*#D3D85E
> > 2*4,6,7*false*352*617*10*10*#7C9F6D*#7C9F6D
> > 3*0,5,7*false*600*20*10*10*#A5DD6F*#A5DD6F
> > 4*2,5,6*false*250*369*10*10*#994CF6*#994CF6
> > 5*1,3,4*false*352*122*10*10*#76A9EE*#76A9EE
> > 6*1,2,4*false*599*720*10*10*#B4E9C8*#B4E9C8
> > 7*0,2,3*false*832*549*10*10*#994CF6*#994CF6 
> > 
> > Now i want to read back a graph to array in script.
> >  arr[m] ={nodelinks : [], hold : false, rposX : 0, rposY : 0, rwidth : 10, rheigth : 10, rcolor : "red" , bcolor : "green"};
> > 
> > I was thinking sub=arr.split("\r\n")
> > And then for each record dataitem=sub.split("\r\n")
> > 
> > And last for links=dataitem[1].split(",")
> > 
> > Does it seem sound?
> 
> function loadGraph()
> {
>     
>     var fileToLoad = document.getElementById("fileToLoad").files[0];
>     var fileReader = new FileReader();
>     fileReader.onload = function(fileLoadedEvent) 
>     {
>         var textFromFileLoaded = fileLoadedEvent.target.result;
>         document.debug.data.value += textFromFileLoaded;
>     };
>     fileReader.readAsText(fileToLoad, "UTF-8");
> 
>     arr=[];  
>     sub=textFromFileLoaded.split("\r\n");
>     for (var x=0;x<sub.length;sub++){
>        dataitem=sub[x].split("*");
>        for(var a=0;a<dataitem.length;a++){
>           arr[a].hold=dataitem[3];
>           arr[a].rposX=dataitem[4];
>           arr[a].rposY=dataitem[5];
>           arr[a].rwidth=dataitem[6];
>           arr[a].rcolor=dataitem[7];
>           arr[a].bcolor=dataitem[8];
>           dataitem[2].split(",")
>           for (var b=0;b<dataitem;b++) {
>              arr[a].nodelinks[b]=dataitem[b]
>           }
>        } 
>     }           
> }

Well now the gist seem to work but there must be some problem with javascript
I manage to get an alert on the data if i "load twice", isn't that strange.
  
alert(textFromFileLoaded);
sub=textFromFileLoaded.split("!");

"X3LOADSAVE.js:46 Uncaught ReferenceError: textFromFileLoaded is not defined
    at loadGraph (X3LOADSAVE.js:46)
    at HTMLButtonElement.onclick (0GRAPH.HTML?filename=N8L3circle.txt:31)"

But second time file loaded it is read into array without errors reported, it seem like a timing issue?

There is no problem to just write to the textarea first time but for some reason i can not use textFromFileload at all i must copy the value to my own variable and even then it will not be read in the first time i load, but the second time i press button to load it work.

function loadGraph()
{   
    textFromFileLoaded="";
    var fileToLoad = document.getElementById("fileToLoad").files[0];
    var fileReader = new FileReader();
    fileReader.onload = function(fileLoadedEvent) 
    {
        textFromFileLoaded = fileLoadedEvent.target.result;
        document.debug.data.value = textFromFileLoaded;
        mytext=textFromFileLoaded;
    };
    fileReader.readAsText(fileToLoad, "UTF-8");
    //arr=[];  
    
    alert(mytext);
    sub=mytext.split("!");
    for (var x=0;x<sub.length;sub++){
       dataitem=sub[x].split("*");
       alert(dataitem[1]);
       for(var a=0;a<dataitem.length;a++){
          arr[a].hold=false;
          arr[a].rposX=parseInt(dataitem[4]);
          arr[a].rposY=parseInt(dataitem[5]);
          arr[a].rwidth=parseInt(dataitem[6]);
          arr[a].rheigth=parseInt(dataitem[7]);
          arr[a].rcolor=dataitem[8];
          arr[a].bcolor=dataitem[9];
          links=dataitem[1].split(",");
          for (var b=0;b<dataitem;b++) {
             arr[a].nodelinks[b]=parseInt(links[b]);
          }
       } 
    }
}

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Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 03:29 -0800
  Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 03:59 -0800
    Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 06:26 -0800
      Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 07:41 -0800
        Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 08:08 -0800
          Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 08:43 -0800
            Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 09:41 -0800
              Re: Read in file to array. "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2017-01-23 10:29 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 11:24 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 11:38 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 11:56 -0800
                Re: Read in file to array. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-23 20:36 +0000
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 19:54 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 20:10 -0800
                Re: Read in file to array. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-24 14:27 +0000
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 08:24 -0800
                Re: Read in file to array. Jake Jarvis <pig_in_shoes@yahoo.com> - 2017-01-24 17:42 +0100
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 08:54 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 09:04 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 11:07 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 13:17 -0800
                Re: Read in file to array. Tim Streater <timstreater@greenbee.net> - 2017-01-24 21:35 +0000
                Re: Read in file to array. Jake Jarvis <pig_in_shoes@yahoo.com> - 2017-01-24 22:42 +0100
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 15:32 -0800
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 15:55 -0800
                Re: Read in file to array. Tim Streater <timstreater@greenbee.net> - 2017-01-25 08:59 +0000
                Re: Read in file to array. Jake Jarvis <pig_in_shoes@yahoo.com> - 2017-01-25 01:58 +0100
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-24 18:51 -0800
                Re: Read in file to array. Jake Jarvis <pig_in_shoes@yahoo.com> - 2017-01-25 10:29 +0100
                Re: Read in file to array. Tim Streater <timstreater@greenbee.net> - 2017-01-25 08:58 +0000
                Re: Read in file to array. jonas.thornvall@gmail.com - 2017-01-23 12:28 -0800
      Re: Read in file to array. Tim Streater <timstreater@greenbee.net> - 2017-01-24 17:21 +0000

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