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