File "sprintf.js"
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/**
* Copyright (c) 2007-2016 Kevin van Zonneveld (https://kvz.io)
* and Contributors (https://locutus.io/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.
*/
function sprintf () {
// discuss at: https://locutus.io/php/sprintf/
// original by: Ash Searle (https://hexmen.com/blog/)
// improved by: Michael White (https://getsprink.com)
// improved by: Jack
// improved by: Kevin van Zonneveld (https://kvz.io)
// improved by: Kevin van Zonneveld (https://kvz.io)
// improved by: Kevin van Zonneveld (https://kvz.io)
// improved by: Dj
// improved by: Allidylls
// input by: Paulo Freitas
// input by: Brett Zamir (https://brett-zamir.me)
// improved by: Rafał Kukawski (https://kukawski.pl)
// 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'
// example 6: sprintf('%+010d', 9)
// returns 6: '+000000009'
// example 7: sprintf('%+0\'@10d', 9)
// returns 7: '@@@@@@@@+9'
// example 8: sprintf('%.f', 3.14)
// returns 8: '3.140000'
// example 9: sprintf('%% %2$d', 1, 2)
// returns 9: '% 2'
var regex = /%%|%(?:(\d+)\$)?((?:[-+#0 ]|'[\s\S])*)(\d+)?(?:\.(\d*))?([\s\S])/g
var args = arguments
var i = 0
var format = args[i++]
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
}
var justify = function (value, prefix, leftJustify, minWidth, padChar) {
var diff = minWidth - value.length
if (diff > 0) {
// when padding with zeros
// on the left side
// keep sign (+ or -) in front
if (!leftJustify && padChar === '0') {
value = [
value.slice(0, prefix.length),
_pad('', diff, '0', true),
value.slice(prefix.length)
].join('')
} else {
value = _pad(value, minWidth, padChar, leftJustify)
}
}
return value
}
var _formatBaseX = function (value, base, leftJustify, minWidth, precision, padChar) {
// Note: casts negative numbers to positive ones
var number = value >>> 0
value = _pad(number.toString(base), precision || 0, '0', false)
return justify(value, '', leftJustify, minWidth, padChar)
}
// _formatString()
var _formatString = function (value, leftJustify, minWidth, precision, customPadChar) {
if (precision !== null && precision !== undefined) {
value = value.slice(0, precision)
}
return justify(value, '', leftJustify, minWidth, customPadChar)
}
// doFormat()
var doFormat = function (substring, argIndex, modifiers, minWidth, precision, specifier) {
var number, prefix, method, textTransform, value
if (substring === '%%') {
return '%'
}
// parse modifiers
var padChar = ' ' // pad with spaces by default
var leftJustify = false
var positiveNumberPrefix = ''
var j, l
for (j = 0, l = modifiers.length; j < l; j++) {
switch (modifiers.charAt(j)) {
case ' ':
case '0':
padChar = modifiers.charAt(j)
break
case '+':
positiveNumberPrefix = '+'
break
case '-':
leftJustify = true
break
case "'":
if (j + 1 < l) {
padChar = modifiers.charAt(j + 1)
j++
}
break
}
}
if (!minWidth) {
minWidth = 0
} else {
minWidth = +minWidth
}
if (!isFinite(minWidth)) {
throw new Error('Width must be finite')
}
if (!precision) {
precision = (specifier === 'd') ? 0 : 'fFeE'.indexOf(specifier) > -1 ? 6 : undefined
} else {
precision = +precision
}
if (argIndex && +argIndex === 0) {
throw new Error('Argument number must be greater than zero')
}
if (argIndex && +argIndex >= args.length) {
throw new Error('Too few arguments')
}
value = argIndex ? args[+argIndex] : args[i++]
switch (specifier) {
case '%':
return '%'
case 's':
return _formatString(value + '', leftJustify, minWidth, precision, padChar)
case 'c':
return _formatString(String.fromCharCode(+value), leftJustify, minWidth, precision, padChar)
case 'b':
return _formatBaseX(value, 2, leftJustify, minWidth, precision, padChar)
case 'o':
return _formatBaseX(value, 8, leftJustify, minWidth, precision, padChar)
case 'x':
return _formatBaseX(value, 16, leftJustify, minWidth, precision, padChar)
case 'X':
return _formatBaseX(value, 16, leftJustify, minWidth, precision, padChar)
.toUpperCase()
case 'u':
return _formatBaseX(value, 10, leftJustify, minWidth, precision, padChar)
case 'i':
case 'd':
number = +value || 0
// Plain Math.round doesn't just truncate
number = Math.round(number - number % 1)
prefix = number < 0 ? '-' : positiveNumberPrefix
value = prefix + _pad(String(Math.abs(number)), precision, '0', false)
if (leftJustify && padChar === '0') {
// can't right-pad 0s on integers
padChar = ' '
}
return justify(value, prefix, leftJustify, minWidth, padChar)
case 'e':
case 'E':
case 'f': // @todo: Should handle locales (as per setlocale)
case 'F':
case 'g':
case 'G':
number = +value
prefix = number < 0 ? '-' : positiveNumberPrefix
method = ['toExponential', 'toFixed', 'toPrecision']['efg'.indexOf(specifier.toLowerCase())]
textTransform = ['toString', 'toUpperCase']['eEfFgG'.indexOf(specifier) % 2]
value = prefix + Math.abs(number)[method](precision)
return justify(value, prefix, leftJustify, minWidth, padChar)[textTransform]()
default:
// unknown specifier, consume that char and return empty
return ''
}
}
try {
return format.replace(regex, doFormat)
} catch (err) {
return false
}
}