1 files changed, 78 insertions, 0 deletions

diff --git a/js/sprintf.js b/js/sprintf.js
new file mode 100644
index 0000000..4d61fa2
--- /dev/null
+++ b/js/sprintf.js
@@ -0,0 +1,78 @@
+/**
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+
+ **/
+
+"use strict";
+
+function sprintf()
+{               
+        var argc = 0;
+        var args = arguments;
+        var fmt = args[argc++];
+        
+        function lpad (str, padString, length) 
+        { 
+                while (str.length < length) 
+                        str = padString + str; 
+                return str; 
+        };
+
+        function format (match, width, dot, precision, length, conversion)
+        {
+                if (match === '%%') return '%';         
+
+                var value = args[argc++];
+                var prefix;
+
+                if (width === undefined) 
+                        width = 0;
+                else 
+                        width = +width;
+                
+                if (precision === undefined)
+                        precision = conversion == 'd' ? 0 : 6;
+                else 
+                        precision = +precision;
+
+                switch (conversion) {
+                        case 's':
+                        case 'c':
+                                return value;
+                                break;
+                        case 'd':
+                                return parseInt(value, 10);
+                                break;
+                        case 'e':
+                                prefix = value < 0 ? '-' : '';
+                                return lpad(prefix+Math.abs(value).toExponential(precision),' ',width);
+                                break;
+                        case 'F':
+                        case 'f':
+                                prefix = value < 0 ? '-' : '';
+                                return lpad(prefix+Math.abs(value).toFixed(precision),' ',width);
+                                break;
+                        case 'g':
+                                prefix = value < 0 ? '-' : '';
+                                return lpad(prefix+Math.abs(value).toPrecision(precision),' ',width);
+                                break;
+                        default:
+                                return match;
+                }
+
+        };
+        return fmt.replace(/%(\d+)?(\.(\d+))?(l?)([%scdfFeg])/g,format);
+};