forked from Gitlink/forgeplus-react
44 lines
1.1 KiB
JavaScript
44 lines
1.1 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule decodeInlineStyleRanges
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* @format
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*
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*/
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'use strict';
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var _require = require('immutable'),
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OrderedSet = _require.OrderedSet;
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var UnicodeUtils = require('fbjs/lib/UnicodeUtils');
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var substr = UnicodeUtils.substr;
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var EMPTY_SET = OrderedSet();
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/**
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* Convert to native JavaScript string lengths to determine ranges.
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*/
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function decodeInlineStyleRanges(text, ranges) {
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var styles = Array(text.length).fill(EMPTY_SET);
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if (ranges) {
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ranges.forEach(function ( /*object*/range) {
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var cursor = substr(text, 0, range.offset).length;
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var end = cursor + substr(text, range.offset, range.length).length;
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while (cursor < end) {
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styles[cursor] = styles[cursor].add(range.style);
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cursor++;
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}
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});
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}
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return styles;
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}
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module.exports = decodeInlineStyleRanges; |