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13555f3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
import {InlineStrategy} from '../pluginStrategy'
import findRangesWithRegex from '../utils/findRangesWithRegex'
// Bold can be delimited by: **, __, ***, and ___
const createBoldStyleStrategy = (): InlineStrategy => {
const asteriskDelimitedRegex =
'(\\*\\*\\*)(.+?)(\\*\\*\\*)|(\\*\\*)(.+?)(\\*\\*)(?!\\*)'
const underscoreDelimitedRegex = '(___)(.+?)(___)|(__)(.+?)(__)(?!_)'
const boldRegex = new RegExp(
`${asteriskDelimitedRegex}|${underscoreDelimitedRegex}`,
'g',
)
const boldDelimiterRegex = /^(\*\*\*|\*\*|___|__)|(\*\*\*|\*\*|___|__)$/g
return {
style: 'BOLD',
delimiterStyle: 'BOLD-DELIMITER',
findStyleRanges: (block) => {
// Return an array of arrays containing start and end indices for ranges of
// text that should be bolded
// e.g. [[0,6], [10,20]]
const text = block.getText()
const boldRanges = findRangesWithRegex(text, boldRegex)
return boldRanges
},
findDelimiterRanges: (block, styleRanges) => {
// Find ranges for delimiters at the beginning/end of styled text ranges
// Returns an array of arrays containing start and end indices for delimiters
const text = block.getText()
let boldDelimiterRanges: number[][] = []
styleRanges.forEach((styleRange) => {
const delimiterRange = findRangesWithRegex(
text.substring(styleRange[0], styleRange[1] + 1),
boldDelimiterRegex,
).map((indices) => indices.map((x) => x + styleRange[0]))
boldDelimiterRanges = boldDelimiterRanges.concat(delimiterRange)
})
return boldDelimiterRanges
},
delimiterStyles: {
opacity: 0.4,
},
}
}
export default createBoldStyleStrategy
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