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+function sprintf() {
+/*
+ * Copyright (c) 2013 Kevin van Zonneveld (http://kvz.io)
+ * and Contributors (http://phpjs.org/authors)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+*/
+ // discuss at: http://phpjs.org/functions/sprintf/
+ // original by: Ash Searle (http://hexmen.com/blog/)
+ // improved by: Michael White (http://getsprink.com)
+ // improved by: Jack
+ // improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+ // improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+ // improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+ // improved by: Dj
+ // improved by: Allidylls
+ // input by: Paulo Freitas
+ // input by: Brett Zamir (http://brett-zamir.me)
+ // example 1: sprintf("%01.2f", 123.1);
+ // returns 1: 123.10
+ // example 2: sprintf("[%10s]", 'monkey');
+ // returns 2: '[ monkey]'
+ // example 3: sprintf("[%'#10s]", 'monkey');
+ // returns 3: '[####monkey]'
+ // example 4: sprintf("%d", 123456789012345);
+ // returns 4: '123456789012345'
+ // example 5: sprintf('%-03s', 'E');
+ // returns 5: 'E00'
+
+ var regex = /%%|%(\d+\$)?([-+\'#0 ]*)(\*\d+\$|\*|\d+)?(\.(\*\d+\$|\*|\d+))?([scboxXuideEfFgG])/g;
+ var a = arguments;
+ var i = 0;
+ var format = a[i++];
+
+ // pad()
+ var pad = function (str, len, chr, leftJustify) {
+ if (!chr) {
+ chr = ' ';
+ }
+ var padding = (str.length >= len) ? '' : new Array(1 + len - str.length >>> 0)
+ .join(chr);
+ return leftJustify ? str + padding : padding + str;
+ };
+
+ // justify()
+ var justify = function (value, prefix, leftJustify, minWidth, zeroPad, customPadChar) {
+ var diff = minWidth - value.length;
+ if (diff > 0) {
+ if (leftJustify || !zeroPad) {
+ value = pad(value, minWidth, customPadChar, leftJustify);
+ } else {
+ value = value.slice(0, prefix.length) + pad('', diff, '0', true) + value.slice(prefix.length);
+ }
+ }
+ return value;
+ };
+
+ // formatBaseX()
+ var formatBaseX = function (value, base, prefix, leftJustify, minWidth, precision, zeroPad) {
+ // Note: casts negative numbers to positive ones
+ var number = value >>> 0;
+ prefix = prefix && number && {
+ '2': '0b',
+ '8': '0',
+ '16': '0x'
+ }[base] || '';
+ value = prefix + pad(number.toString(base), precision || 0, '0', false);
+ return justify(value, prefix, leftJustify, minWidth, zeroPad);
+ };
+
+ // formatString()
+ var formatString = function (value, leftJustify, minWidth, precision, zeroPad, customPadChar) {
+ if (precision != null) {
+ value = value.slice(0, precision);
+ }
+ return justify(value, '', leftJustify, minWidth, zeroPad, customPadChar);
+ };
+
+ // doFormat()
+ var doFormat = function (substring, valueIndex, flags, minWidth, _, precision, type) {
+ var number, prefix, method, textTransform, value;
+
+ if (substring === '%%') {
+ return '%';
+ }
+
+ // parse flags
+ var leftJustify = false;
+ var positivePrefix = '';
+ var zeroPad = false;
+ var prefixBaseX = false;
+ var customPadChar = ' ';
+ var flagsl = flags.length;
+ for (var j = 0; flags && j < flagsl; j++) {
+ switch (flags.charAt(j)) {
+ case ' ':
+ positivePrefix = ' ';
+ break;
+ case '+':
+ positivePrefix = '+';
+ break;
+ case '-':
+ leftJustify = true;
+ break;
+ case "'":
+ customPadChar = flags.charAt(j + 1);
+ break;
+ case '0':
+ zeroPad = true;
+ customPadChar = '0';
+ break;
+ case '#':
+ prefixBaseX = true;
+ break;
+ }
+ }
+
+ // parameters may be null, undefined, empty-string or real valued
+ // we want to ignore null, undefined and empty-string values
+ if (!minWidth) {
+ minWidth = 0;
+ } else if (minWidth === '*') {
+ minWidth = +a[i++];
+ } else if (minWidth.charAt(0) == '*') {
+ minWidth = +a[minWidth.slice(1, -1)];
+ } else {
+ minWidth = +minWidth;
+ }
+
+ // Note: undocumented perl feature:
+ if (minWidth < 0) {
+ minWidth = -minWidth;
+ leftJustify = true;
+ }
+
+ if (!isFinite(minWidth)) {
+ throw new Error('sprintf: (minimum-)width must be finite');
+ }
+
+ if (!precision) {
+ precision = 'fFeE'.indexOf(type) > -1 ? 6 : (type === 'd') ? 0 : undefined;
+ } else if (precision === '*') {
+ precision = +a[i++];
+ } else if (precision.charAt(0) == '*') {
+ precision = +a[precision.slice(1, -1)];
+ } else {
+ precision = +precision;
+ }
+
+ // grab value using valueIndex if required?
+ value = valueIndex ? a[valueIndex.slice(0, -1)] : a[i++];
+
+ switch (type) {
+ case 's':
+ return formatString(String(value), leftJustify, minWidth, precision, zeroPad, customPadChar);
+ case 'c':
+ return formatString(String.fromCharCode(+value), leftJustify, minWidth, precision, zeroPad);
+ case 'b':
+ return formatBaseX(value, 2, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
+ case 'o':
+ return formatBaseX(value, 8, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
+ case 'x':
+ return formatBaseX(value, 16, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
+ case 'X':
+ return formatBaseX(value, 16, prefixBaseX, leftJustify, minWidth, precision, zeroPad)
+ .toUpperCase();
+ case 'u':
+ return formatBaseX(value, 10, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
+ case 'i':
+ case 'd':
+ number = +value || 0;
+ // Plain Math.round doesn't just truncate
+ number = Math.round(number - number % 1);
+ prefix = number < 0 ? '-' : positivePrefix;
+ value = prefix + pad(String(Math.abs(number)), precision, '0', false);
+ return justify(value, prefix, leftJustify, minWidth, zeroPad);
+ case 'e':
+ case 'E':
+ case 'f': // Should handle locales (as per setlocale)
+ case 'F':
+ case 'g':
+ case 'G':
+ number = +value;
+ prefix = number < 0 ? '-' : positivePrefix;
+ method = ['toExponential', 'toFixed', 'toPrecision']['efg'.indexOf(type.toLowerCase())];
+ textTransform = ['toString', 'toUpperCase']['eEfFgG'.indexOf(type) % 2];
+ value = prefix + Math.abs(number)[method](precision);
+ return justify(value, prefix, leftJustify, minWidth, zeroPad)[textTransform]();
+ default:
+ return substring;
+ }
+ };
+
+ return format.replace(regex, doFormat);
+}