Michael Freno
7c684a42cc
- Consolidated duplicate UndoManagers to single instance - Fixed connection promise to only resolve on 'connected' status - Fixed WebSocketProvider import (WebsocketProvider) - Added proper doc.destroy() cleanup - Renamed isPresenceInitialized property to avoid conflict Co-Authored-By: Paperclip <noreply@paperclip.ing>
51 lines
1.5 KiB
TypeScript
51 lines
1.5 KiB
TypeScript
export function isUri(value: string) {
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// based on https://github.com/ogt/valid-url
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// check for illegal characters
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if (/[^a-z0-9:/?#[\]@!$&'()*+,;=.\-_~%]/i.test(value)) return false
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// check for hex escapes that aren't complete
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if (/%[^0-9a-f]/i.test(value)) return false
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if (/%[0-9a-f](:?[^0-9a-f]|$)/i.test(value)) return false
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// from RFC 3986
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const splitted = splitUri(value)
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const scheme = splitted[1]
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const authority = splitted[2]
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const path = splitted[3]
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const query = splitted[4]
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const fragment = splitted[5]
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// scheme and path are required, though the path can be empty
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if (!(scheme?.length && path.length >= 0)) return false
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// if authority is present, the path must be empty or begin with a /
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if (authority?.length) {
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if (!(path.length === 0 || /^\//.test(path))) return false
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} else {
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// if authority is not present, the path must not start with //
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if (/^\/\//.test(path)) return false
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}
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// scheme must begin with a letter, then consist of letters, digits, +, ., or -
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if (!/^[a-z][a-z0-9+\-.]*$/.test(scheme.toLowerCase())) return false
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let out = ''
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// re-assemble the URL per section 5.3 in RFC 3986
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out += `${scheme}:`
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if (authority?.length) out += `//${authority}`
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out += path
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if (query?.length) out += `?${query}`
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if (fragment?.length) out += `#${fragment}`
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return out
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}
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function splitUri(value: string) {
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return value.match(
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/(?:([^:/?#]+):)?(?:\/\/([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?/,
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)!
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}
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