forked from Gitlink/forgeplus-react
42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
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/**
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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 encodeEntityRanges
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* @format
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* @flow
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*/
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'use strict';
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import type { BlockNodeRecord } from './BlockNodeRecord';
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import type { EntityRange } from './EntityRange';
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var DraftStringKey = require('./DraftStringKey');
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var UnicodeUtils = require('fbjs/lib/UnicodeUtils');
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var { strlen } = UnicodeUtils;
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/**
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* Convert to UTF-8 character counts for storage.
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*/
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function encodeEntityRanges(block: BlockNodeRecord, storageMap: Object): Array<EntityRange> {
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var encoded = [];
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block.findEntityRanges(character => !!character.getEntity(), ( /*number*/start, /*number*/end) => {
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var text = block.getText();
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var key = block.getEntityAt(start);
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encoded.push({
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offset: strlen(text.slice(0, start)),
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length: strlen(text.slice(start, end)),
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// Encode the key as a number for range storage.
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key: Number(storageMap[DraftStringKey.stringify(key)])
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});
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});
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return encoded;
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}
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module.exports = encodeEntityRanges;
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