Finding info in textareas

**wbport** · 02-18-2010 02:14 PM

I am trying to read something like the following in a textarea

Code:

|Note|Dur:4th|Pos:n1
|Note|Dur:4th|Pos:n-3
|Note|Dur:4th|Pos:n0
|Note|Dur:4th|Pos:#2
|Note|Dur:4th|Pos:n3
|Note|Dur:4th|Pos:n-2
|Note|Dur:4th|Pos:#-2

There are other types of records but I am only interested in the ones which start with "|Note|". The field after "Pos:" will be compared to members of:

Code:

 var offsets = [ "n-6", "#-6", "n-5", "#-5", "n-4", "n-3", ... ]

If there are other fields after Pos:, there will be a "|" or "!" instead of the end of the line.

I was able to run the split("\n") command against the textarea to break it into separate lines, but I couldn't search those lines.

I hope to add this as a new feature to ttr.htm.

TIA

**harrierdh** · 02-18-2010 02:35 PM

Can you post the code, especially where the split is.

**wbport** · 02-18-2010 04:21 PM

It should be able to read the data it just produced. After "Click", "Read" tests what I am working on.

Code:

<html>
<head>
<title>Generate twelve tone row</title>
<script language="JavaScript">
  var deck = new Array();
  var seltab = new Array();
  var keyOffset;
function startup() {
  document.nwcform.selAll.checked = true;
  document.nwcform.bClick1.focus();
  } 
  
function calculate(parm) {
  var offsets = [ "n-6", "#-6", "n-5", "#-5", "n-4", "n-3", "#-3", "n-2", "#-2", "n-1", "#-1", "n0",
   "n1", "#1", "n2", "#2", "n3", "n4", "#4", "n5", "#5", "n6", "#6" ];
  var i, j, OutText = "", testflags = "00000000000000000000";  // 25 of 'em.
  
  if (parm == 0) {  //Create random permutation
    keyOffset = document.nwcform.Key.selectedIndex;   
    for (i=0; i < 12; i++)
      deck[i] = i;
      
    for (j = 11; j > -1; j--) {
      var r = Math.floor(Math.random() * j); // Pick one from those remaining
      seltab[j] = deck[r];
      deck[r] = deck[j]; } // Move last of those remaining to slot just chosen 
  }
  else {  // Code to read "OutputField" to determine sequence and key goes here
    var cntNotes=0;
    var lines = new Array();
    lines = document.nwcform.OutputField.value.split("\n");
    for (i=0; lines[i]; i++) {
       var tstr = lines[i];		
	   if (tstr.test("Note")) 
	    for (var k = 0; k < offsets.length; k++) {  
		  if (tstr.search(offsets[k])) {
			seltab[cntNotes++]=k;
			testflags[k] = 1;
            alert(testflags);			}
	  }
	}
	alert(testflags);		
		  
  }   //End of code to read OutputField
  
  OutText = "!NoteWorthyComposerClip(2.0,Single)\n";
 
  for (i=0; i < 12; i++) {
    OutText += "|Note|Dur:4th|Pos:" + offsets[seltab[i] + keyOffset] + "\n";
    deck[i] = seltab[i]; }
    
  if (document.nwcform.I1.checked) {
    OutText += "|Rest|Dur:4th|Color:0|Visibility:Default\n|Bar|Style:Single|XBarCnt:N|SysBreak:N|Color:0|Visibility:Default\n";
    OutText += '|Text|Text:"Inversion"|Font:PageSmallText|Pos:-6|Wide:N|Justify:Left|Placement:BestFit|Color:0|Visibility:Default\n';
      for (i=0; i < 12; i++) {
        seltab[i] = 11 - deck[i]; 
        OutText += "|Note|Dur:4th|Pos:" + offsets[seltab[i] + keyOffset] + "\n"; } }

  if (document.nwcform.R1.checked) {
    OutText += "|Rest|Dur:4th|Color:0|Visibility:Default\n|Bar|Style:Single|XBarCnt:N|SysBreak:N|Color:0|Visibility:Default\n";
    OutText += '|Text|Text:"Retrograde"|Font:PageSmallText|Pos:-6|Wide:N|Justify:Left|Placement:BestFit|Color:0|Visibility:Default\n';
      for (i=11; i > -1; i--) {
        seltab[i] = deck[i];
        OutText += "|Note|Dur:4th|Pos:" + offsets[seltab[i] + keyOffset] + "\n"; } }
       
  if (document.nwcform.IR1.checked) {
    OutText += "|Rest|Dur:4th|Color:0|Visibility:Default\n|Bar|Style:Single|XBarCnt:N|SysBreak:N|Color:0|Visibility:Default\n";
    OutText += '|Text|Text:"Invert Retro"|Font:PageSmallText|Pos:-6|Wide:N|Justify:Left|Placement:BestFit|Color:0|Visibility:Default\n';
      for (i=11; i > -1; i--) {
        seltab[i] = 11 - deck[i]; 
        OutText += "|Note|Dur:4th|Pos:" + offsets[seltab[i] + keyOffset] + "\n"; } }
       
  OutText += "!NoteWorthyComposerClip-End";
   
  document.nwcform.OutputField.value = OutText;
  
  if (document.nwcform.selAll.checked == true)
    document.nwcform.OutputField.select();
	// New code to check out split
	//var tmp = new Array();
	//tmp = OutText.split("\n");
	//for (var x = 0; tmp[x]; x++) {
	//  alert(x + " " + tmp[x]); }
	//End new code
   
}
</script>
</head>

<body onload="startup()">
<form name="nwcform" onSubmit="calculate();return false;">
  <table width="782" height="350">
    <tr>
      <td colspan="4" width="1000" height="24">
        <b><big>Generate twelve tone row to be used in NoteWorthy Composer 2:</big></b>
      </td>
    </tr>
    <tr><td width="131" height="25">Bottom note: <select name="Key">
          <option selected="SELECTED" value="C ">C </option>
          <option value="C#">C#</option>
          <option value="D ">D </option>
          <option value="D#">D#</option>
          <option value="E ">E </option>
          <option value="F ">F </option>
          <option value="F#">F#</option>
          <option value="G ">G </option>
          <option value="G#">G#</option>
          <option value="A ">A </option>
          <option value="A#">A#</option>
          <option value="B ">B </option>
        </select></td>
        <td width="116"><input type="checkbox" name="I1" value="ON">Inversion</td>
        <td width="138"><input type="checkbox" name="R1" value="ON">Retrograde</td>
        <td width="721"><input type="checkbox" name="IR1" value="ON">Invert Retro</td>     
    <tr>
    
      <td height="27"  width="100"><input type="button" id="bClick1" value="Click" onclick="calculate(0)"></td>
      <td height="27"  width="100"><input type="button" id="bClick2" value="Read" onclick="calculate(1)"></td>
      <td width="602" height="27" colspan="3">Generated code is to be used on a treble clef. &nbsp;For other clefs make appropriate transposition.</td>
    </tr>
    <tr>
    <td colspan=5 width="1044" height="200">
      <textarea name="OutputField" rows="16" cols="120"></textarea></td></tr>
      <tr><td><input type="checkbox" name=selAll value="ON">Select All</td></tr>
  </table>
</form>
</body>
</html>

**harrierdh** · 02-18-2010 04:32 PM

You have to implicitly convert OutText to a string object before you can use split.

OutText = OutText.toString();
var tmp = new Array();
tmp = OutText.split("\n");

**rnd me** · 02-19-2010 02:45 AM

Originally Posted by harrierdh

You have to implicitly convert OutText to a string object before you can use split.

OutText = OutText.toString();
var tmp = new Array();
tmp = OutText.split("\n");

this is not java, relax your typing.

1. your code is explicit, not implicit.
2. since OutText is already a string, there's no need for toString.
3. you don't need to pre-define arrays.

so, all the above code is equal to:

Code:

var tmp = OutText.split(/\r?\n/);

i use a RegExp instead of a string delimiter to uniformly handle mac, linux, and pc line breaks.

wbport:

here is a simple example of what i think you're trying to do, feel free to copy and modify.

Code:

//text (in lieu of textarea value for demo)
var text="\
|Note|Dur:4th|Pos:n1\n\
|Note|Dur:4th|Pos:n-3\n\
|Note|Dur:4th|Pos:n0\n\
|Note|Dur:4th|Pos:#2\n\
|Note|Dur:4th|Pos:n3\n\
|Note|Dur:4th|Pos:n-2\n\
|Note|Dur:4th|Pos:#-6";

//define ok values here:
var offsets = { "n-6":1, "#-6":1, "n-5":1, "#-5":1, "n-4":1, "n-3":1};

//create a line array and output buffer:
var ray=text.split(/\r?\n/), buff=[];

//loop through lines:
for (var it, i=0, mx=ray.length; i<mx; i++){
	it=ray[i];
 	if(it.slice(0, 6)=="|Note|"){	it.replace(/Pos\:([^|\n\r!]+)/g,
		function(j, a){ //test Pos:value and collect the slot # if good:
			if(offsets[a]){ buff[buff.length]=i; }  
		});//end replace function
	}//end if Note
}//next line

//show any found slots, listed by line #:
alert(buff);

**wbport** · 02-18-2010 04:49 PM

The code around ten lines before <body> worked, the code after the first else was able to split out the lines (I think), but I couldn't search for Note on the split lines, much less find out where the Position was in the offset table.

Thanks for looking.

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