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