2022-08-03 02:24:51 +00:00
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export type HtmlEscaped = { isEscaped: true }
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export type HtmlEscapedString = string & HtmlEscaped
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export type StringBuffer = [string]
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2022-08-03 02:29:33 +00:00
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// The `escapeToBuffer` implementation is based on code from the MIT licensed `react-dom` package.
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2023-08-15 22:39:35 +00:00
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// https://github.com/facebook/react/blob/main/packages/react-dom-bindings/src/server/escapeTextForBrowser.js
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2022-08-03 02:24:51 +00:00
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2023-07-26 14:12:25 +00:00
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const escapeRe = /[&<>'"]/
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2022-07-02 06:09:45 +00:00
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2022-08-03 02:24:51 +00:00
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export const escapeToBuffer = (str: string, buffer: StringBuffer): void => {
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const match = str.search(escapeRe)
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if (match === -1) {
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buffer[0] += str
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return
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}
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let escape
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let index
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let lastIndex = 0
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for (index = match; index < str.length; index++) {
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switch (str.charCodeAt(index)) {
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case 34: // "
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escape = '"'
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break
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2023-07-26 14:12:25 +00:00
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case 39: // '
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escape = '''
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break
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2022-08-03 02:24:51 +00:00
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case 38: // &
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escape = '&'
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break
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case 60: // <
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escape = '<'
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break
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case 62: // >
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escape = '>'
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break
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default:
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continue
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}
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buffer[0] += str.substring(lastIndex, index) + escape
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lastIndex = index + 1
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}
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buffer[0] += str.substring(lastIndex, index)
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2022-07-02 06:09:45 +00:00
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}
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