Page MenuHomec4science
Files F95162438

index.js
No OneTemporary
Actions

File Metadata

Created
Fri, Dec 13, 08:50

index.js
View Options

/*!
* fill-range <https://github.com/jonschlinkert/fill-range>
*
* Copyright (c) 2014-present, Jon Schlinkert.
* Licensed under the MIT License.
*/
'use strict';
const util = require('util');
const toRegexRange = require('to-regex-range');
const isObject = val => val !== null && typeof val === 'object' && !Array.isArray(val);
const transform = toNumber => {
return value => toNumber === true ? Number(value) : String(value);
};
const isValidValue = value => {
return typeof value === 'number' || (typeof value === 'string' && value !== '');
};
const isNumber = num => Number.isInteger(+num);
const zeros = input => {
let value = `${input}`;
let index = -1;
if (value[0] === '-') value = value.slice(1);
if (value === '0') return false;
while (value[++index] === '0');
return index > 0;
};
const stringify = (start, end, options) => {
if (typeof start === 'string' || typeof end === 'string') {
return true;
}
return options.stringify === true;
};
const pad = (input, maxLength, toNumber) => {
if (maxLength > 0) {
let dash = input[0] === '-' ? '-' : '';
if (dash) input = input.slice(1);
input = (dash + input.padStart(dash ? maxLength - 1 : maxLength, '0'));
}
if (toNumber === false) {
return String(input);
}
return input;
};
const toMaxLen = (input, maxLength) => {
let negative = input[0] === '-' ? '-' : '';
if (negative) {
input = input.slice(1);
maxLength--;
}
while (input.length < maxLength) input = '0' + input;
return negative ? ('-' + input) : input;
};
const toSequence = (parts, options) => {
parts.negatives.sort((a, b) => a < b ? -1 : a > b ? 1 : 0);
parts.positives.sort((a, b) => a < b ? -1 : a > b ? 1 : 0);
let prefix = options.capture ? '' : '?:';
let positives = '';
let negatives = '';
let result;
if (parts.positives.length) {
positives = parts.positives.join('|');
}
if (parts.negatives.length) {
negatives = `-(${prefix}${parts.negatives.join('|')})`;
}
if (positives && negatives) {
result = `${positives}|${negatives}`;
} else {
result = positives || negatives;
}
if (options.wrap) {
return `(${prefix}${result})`;
}
return result;
};
const toRange = (a, b, isNumbers, options) => {
if (isNumbers) {
return toRegexRange(a, b, { wrap: false, ...options });
}
let start = String.fromCharCode(a);
if (a === b) return start;
let stop = String.fromCharCode(b);
return `[${start}-${stop}]`;
};
const toRegex = (start, end, options) => {
if (Array.isArray(start)) {
let wrap = options.wrap === true;
let prefix = options.capture ? '' : '?:';
return wrap ? `(${prefix}${start.join('|')})` : start.join('|');
}
return toRegexRange(start, end, options);
};
const rangeError = (...args) => {
return new RangeError('Invalid range arguments: ' + util.inspect(...args));
};
const invalidRange = (start, end, options) => {
if (options.strictRanges === true) throw rangeError([start, end]);
return [];
};
const invalidStep = (step, options) => {
if (options.strictRanges === true) {
throw new TypeError(`Expected step "${step}" to be a number`);
}
return [];
};
const fillNumbers = (start, end, step = 1, options = {}) => {
let a = Number(start);
let b = Number(end);
if (!Number.isInteger(a) || !Number.isInteger(b)) {
if (options.strictRanges === true) throw rangeError([start, end]);
return [];
}
// fix negative zero
if (a === 0) a = 0;
if (b === 0) b = 0;
let descending = a > b;
let startString = String(start);
let endString = String(end);
let stepString = String(step);
step = Math.max(Math.abs(step), 1);
let padded = zeros(startString) || zeros(endString) || zeros(stepString);
let maxLen = padded ? Math.max(startString.length, endString.length, stepString.length) : 0;
let toNumber = padded === false && stringify(start, end, options) === false;
let format = options.transform || transform(toNumber);
if (options.toRegex && step === 1) {
return toRange(toMaxLen(start, maxLen), toMaxLen(end, maxLen), true, options);
}
let parts = { negatives: [], positives: [] };
let push = num => parts[num < 0 ? 'negatives' : 'positives'].push(Math.abs(num));
let range = [];
let index = 0;
while (descending ? a >= b : a <= b) {
if (options.toRegex === true && step > 1) {
push(a);
} else {
range.push(pad(format(a, index), maxLen, toNumber));
}
a = descending ? a - step : a + step;
index++;
}
if (options.toRegex === true) {
return step > 1
? toSequence(parts, options)
: toRegex(range, null, { wrap: false, ...options });
}
return range;
};
const fillLetters = (start, end, step = 1, options = {}) => {
if ((!isNumber(start) && start.length > 1) || (!isNumber(end) && end.length > 1)) {
return invalidRange(start, end, options);
}
let format = options.transform || (val => String.fromCharCode(val));
let a = `${start}`.charCodeAt(0);
let b = `${end}`.charCodeAt(0);
let descending = a > b;
let min = Math.min(a, b);
let max = Math.max(a, b);
if (options.toRegex && step === 1) {
return toRange(min, max, false, options);
}
let range = [];
let index = 0;
while (descending ? a >= b : a <= b) {
range.push(format(a, index));
a = descending ? a - step : a + step;
index++;
}
if (options.toRegex === true) {
return toRegex(range, null, { wrap: false, options });
}
return range;
};
const fill = (start, end, step, options = {}) => {
if (end == null && isValidValue(start)) {
return [start];
}
if (!isValidValue(start) || !isValidValue(end)) {
return invalidRange(start, end, options);
}
if (typeof step === 'function') {
return fill(start, end, 1, { transform: step });
}
if (isObject(step)) {
return fill(start, end, 0, step);
}
let opts = { ...options };
if (opts.capture === true) opts.wrap = true;
step = step || opts.step || 1;
if (!isNumber(step)) {
if (step != null && !isObject(step)) return invalidStep(step, opts);
return fill(start, end, 1, step);
}
if (isNumber(start) && isNumber(end)) {
return fillNumbers(start, end, step, opts);
}
return fillLetters(start, end, Math.max(Math.abs(step), 1), opts);
};
module.exports = fill;

Event Timeline

c4science · Help