147 lines
3.6 KiB
JavaScript
147 lines
3.6 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict-local
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* @format
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*/
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'use strict';
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const React = require('React');
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const Text = require('Text');
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const UTFSequence = require('UTFSequence');
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const stringifySafe = require('stringifySafe');
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import type {TextStyleProp} from 'StyleSheet';
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export type Category = string;
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export type Message = $ReadOnly<{|
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content: string,
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substitutions: $ReadOnlyArray<
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$ReadOnly<{|
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length: number,
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offset: number,
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|}>,
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>,
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|}>;
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const SUBSTITUTION = UTFSequence.BOM + '%s';
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const YellowBoxCategory = {
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parse(
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args: $ReadOnlyArray<mixed>,
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): $ReadOnly<{|
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category: Category,
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message: Message,
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|}> {
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const categoryParts = [];
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const contentParts = [];
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const substitutionOffsets = [];
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const remaining = [...args];
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if (typeof remaining[0] === 'string') {
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const formatString = String(remaining.shift());
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const formatStringParts = formatString.split('%s');
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const substitutionCount = formatStringParts.length - 1;
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const substitutions = remaining.splice(0, substitutionCount);
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let categoryString = '';
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let contentString = '';
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let substitutionIndex = 0;
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for (const formatStringPart of formatStringParts) {
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categoryString += formatStringPart;
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contentString += formatStringPart;
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if (substitutionIndex < substitutionCount) {
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if (substitutionIndex < substitutions.length) {
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const substitution = stringifySafe(
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substitutions[substitutionIndex],
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);
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substitutionOffsets.push({
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length: substitution.length,
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offset: contentString.length,
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});
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categoryString += SUBSTITUTION;
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contentString += substitution;
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} else {
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substitutionOffsets.push({
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length: 2,
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offset: contentString.length,
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});
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categoryString += '%s';
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contentString += '%s';
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}
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substitutionIndex++;
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}
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}
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categoryParts.push(categoryString);
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contentParts.push(contentString);
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}
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const remainingArgs = remaining.map(stringifySafe);
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categoryParts.push(...remainingArgs);
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contentParts.push(...remainingArgs);
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return {
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category: categoryParts.join(' '),
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message: {
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content: contentParts.join(' '),
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substitutions: substitutionOffsets,
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},
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};
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},
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render(
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{content, substitutions}: Message,
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substitutionStyle: TextStyleProp,
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): React.Node {
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const elements = [];
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const lastOffset = substitutions.reduce(
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(prevOffset, substitution, index) => {
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const key = String(index);
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if (substitution.offset > prevOffset) {
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const prevPart = content.substr(
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prevOffset,
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substitution.offset - prevOffset,
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);
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elements.push(<Text key={key}>{prevPart}</Text>);
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}
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const substititionPart = content.substr(
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substitution.offset,
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substitution.length,
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);
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elements.push(
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<Text key={key + '.5'} style={substitutionStyle}>
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{substititionPart}
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</Text>,
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);
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return substitution.offset + substitution.length;
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},
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0,
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);
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if (lastOffset < content.length) {
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const lastPart = content.substr(lastOffset);
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elements.push(<Text key="-1">{lastPart}</Text>);
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}
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return elements;
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},
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};
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module.exports = YellowBoxCategory;
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