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53 lines
1.2 KiB
JavaScript
53 lines
1.2 KiB
JavaScript
5 years ago
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/*!
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* align-text <https://github.com/jonschlinkert/align-text>
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*
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* Copyright (c) 2015, Jon Schlinkert.
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* Licensed under the MIT License.
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*/
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'use strict';
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var typeOf = require('kind-of');
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var repeat = require('repeat-string');
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var longest = require('longest');
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module.exports = function alignText(val, fn) {
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var lines, type = typeOf(val);
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if (type === 'array') {
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lines = val;
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} else if (type === 'string') {
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lines = val.split(/(?:\r\n|\n)/);
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} else {
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throw new TypeError('align-text expects a string or array.');
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}
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var fnType = typeOf(fn);
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var len = lines.length;
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var max = longest(lines);
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var res = [], i = 0;
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while (len--) {
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var line = String(lines[i++]);
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var diff;
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if (fnType === 'function') {
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diff = fn(line.length, max.length, line, lines, i);
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} else if (fnType === 'number') {
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diff = fn;
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} else {
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diff = max.length - line.length;
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}
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if (typeOf(diff) === 'number') {
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res.push(repeat(' ', diff) + line);
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} else if (typeOf(diff) === 'object') {
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var result = repeat(diff.character || ' ', diff.indent || 0);
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res.push((diff.prefix || '') + result + line);
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}
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}
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if (type === 'array') return res;
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return res.join('\n');
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};
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