Ext.utl.Format.fileSize() -- doesn't support GB and TB file sizes

[lorezyra]

fileSize() function will only calculate up to the megabyte range. This should be updated to handle much larger file sizes that will exist on a typical web-server.

Original Source for EXTjs 3.3.1
[http://dev.sencha.com/deploy/dev/doc...rmat-fileSize]

/**
         * Simple format for a file size (xxx bytes, xxx KB, xxx MB)
         * @param {Number/String} size The numeric value to format
         * @return {String} The formatted file size
         */
        fileSize : function(size) {
            if (size < 1024) {
                return size + " bytes";
            } else if (size < 1048576) {
                return (Math.round(((size*10) / 1024))/10) + " KB";
            } else {
                return (Math.round(((size*10) / 1048576))/10) + " MB";
            }
        }, 

Below is my recommended patch for 3.x and 4.x

/**
         * Simple format for a file size (xxx bytes, xxx KB, xxx MB and upto xxx PB)
         * @param {Number/String} size The numeric value to format
         * @return {String} The formatted file size
         */
        fileSize : function(size) {
        if (size < 1024) { //pow(2,10)
            return size + " bytes";
        } else if (size < 1048576) { //pow(2,20)
            return (Math.round(((size*10) / 1024))/10) + " KB";
        } else if (size < 1073741824) { //pow(2,30)
            return (Math.round(((size*10) / 1048576))/10) + " MB";
        } else if (size < 1099511627776) { //pow(2,40)
            return (Math.round(((size*100) / 1073741824))/100) + " GB";
        } else if (size < 1125899906842624) { //pow(2,50)
            return (Math.round(((size*100) / 1099511627776))/100) + " TB";
        } else { //pow(2,60)
            return (Math.round(((size*100) / 1125899906842624))/100) + " PB";
        }
        }, 

[lorezyra]

I found this thread after I created my post. However, it's in the premium section...


http://www.sencha.com/forum/showthre...o-calculate-GB

[lorezyra]

//bump++;

[lorezyra]

I considered the necessity to add thresholds to the filesize funtion. By default, the function below will return a string that is similar to the Windows style of filesizes. However, some cases exists where you want to keep the threshold at 100%, thereby only indicating that file by actual size...
Additionally, I've added another optional parameter for decimal places. This makes it flexible to display more accurate filesizes upto 4 decimal places.


For Example:

Ext.util.format.fileSize('934123');
//returns: "912.23 KB"

Ext.util.format.fileSize('973265', 1,2);
//returns: "950.45 KB"

Ext.util.format.fileSize('973265', 1,1);
//returns: "950.5 KB"

Ext.util.format.fileSize('957523265', 0.85,3);
//returns: "0.892 GB"

Ext.util.format.fileSize('957523265', .98);
//returns: "913.17 MB"

/**
         * Simple format for a file size (xxx.x bytes, xxx.xx KB, xxx.xx MB and upto xxx PB)
         * @param {Number/String} size The numeric value to format
          * @param {Number/String} threshold (optional) The numeric value to force size to use the next larger filesize indicator
          * @param {Number/String} decimal (optional) The numeric value of decimal places to show in the returned string
         * @return {String} The formatted file size
         */
        fileSize : function(size, threshold, decimal) {
        threshold= threshold? threshold: 0.95;//set default to a Windows style of FileSizes
        threshold= Math.min(Math.max(threshold, 0.75), 1); //should be between 75-100%
        decimal= decimal? decimal: 2;//set default to 2 decimal units
        decimal= Math.min(Math.max(decimal, 0), 4); //should be between 0-4
        if (size < 1024*threshold) { //pow(2,10)
            return size + " bytes";
        } else if (size < 1048576*threshold) { //pow(2,20)
            return (Math.round(((size*Math.pow(10,decimal)) / 1024))/Math.pow(10,decimal)) + " KB";
        } else if (size < 1073741824*threshold) { //pow(2,30)
            return (Math.round(((size*Math.pow(10,decimal)) / 1048576))/Math.pow(10,decimal)) + " MB";
        } else if (size < 1099511627776*threshold) { //pow(2,40)
            return (Math.round(((size*Math.pow(10,decimal)) / 1073741824))/Math.pow(10,decimal)) + " GB";
        } else if (size < 1125899906842624*threshold) { //pow(2,50)
            return (Math.round(((size*Math.pow(10,decimal)) / 1099511627776))/Math.pow(10,decimal)) + " TB";
        } else { //pow(2,60)
            return (Math.round(((size*Math.pow(10,decimal)) / 1125899906842624))/Math.pow(10,decimal)) + " PB";
        }
        }, 

[garnment]

For our french friends !!!

formatSize: function(bytes){
     var TabUnite = Array("octets", "Ko", "Mo", "Go", "To", "Po", "Eo", "Zo", "Yo");
     var i = 0 ;
     while(bytes >= 1024 && i < TabUnite.length-1){ 
     bytes = bytes / 1024;
     i++; 
     }
bytes = Math.round(bytes*100)/100;
return bytes+" "+TabUnite[i];
}