Joost Rekveld

today I discovered that both the writeint16() and the writebytes() 

methods of the file object will not take arrays with more than 256 

so i wrote these two functions, the only other variable they need is 

'file', which should be a open (and checked) file object.

Works fine, but for largish files the thing gets very slow indeed..

    var chunks = Math.floor(count / chunkSize);

            file.writeint16(array);                        // write first chunk = remainder

            file.writeint16(array.splice(0, chunkSize));        // write first chunk

            file.writeint16(array);                        // write remainder

//            post("itemsleft:", array.length, "filepos:", file.position,"n");

                tempArray = array.splice(0, chunkSize);

                file.writeint16(tempArray);

//                post("temparraylen:", tempArray.length,"n");

//                post("itemsleft:", array.length, "filepos:", file.position,"n");

            file.writebytes(array);                        // write first chunk = remainder

            file.writebytes(array.splice(0, chunkSize));        // write first chunk

            file.writebytes(array);                        // write remainder

                file.writebytes(array.splice(0, chunkSize));

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"The mystery of the world is the visible, not the invisible"

today I discovered that both the writeint16() and the writebytes() 
methods of the file object will not take arrays with more than 256 
elements.
Am I right in finding this out ?

so i wrote these two functions, the only other variable they need is 
'file', which should be a open (and checked) file object.
Works fine, but for largish files the thing gets very slow indeed..

function writeManyInts(array)
{
	var chunkSize = 256;
	var count = array.length;
	var chunks = Math.floor(count / chunkSize);
	var rem = count % chunkSize;
	var tempArray;

	switch (chunks)
		{
		case 0:
			file.writeint16(array);						// write first chunk = remainder
			break;
		case 1:
			file.writeint16(array.splice(0, chunkSize));		// write first chunk
			file.writeint16(array);						// write remainder
			break;
		default:
//			post("itemsleft:", array.length, "filepos:", file.position,"n");
			for (var k=0; k
			{
				tempArray = array.splice(0, chunkSize);
				file.writeint16(tempArray);
//				post("temparraylen:", tempArray.length,"n");
//				post("itemsleft:", array.length, "filepos:", file.position,"n");
			}
			file.writeint16(array);						// write remainder
		}
}

function writeManyBytes(array)
{
	var chunkSize = 256;
	var count = array.length;
	var chunks = Math.floor(count / chunkSize);
	var rem = count % chunkSize;

	switch (chunks)
		{
		case 0:
			file.writebytes(array);						// write first chunk = remainder
			break;
		case 1:
			file.writebytes(array.splice(0, chunkSize));		// write first chunk
			file.writebytes(array);						// write remainder
			break;
		default:
			for (var k=0; k
			{
				file.writebytes(array.splice(0, chunkSize));
			}
			file.writebytes(array);						// write remainder
		}
}

                         Joost Rekveld
-----------    http://www.lumen.nu/rekveld

"The mystery of the world is the visible, not the invisible"
(Oscar Wilde)

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file writing methods