thelounge/client/js/libs/handlebars/ircmessageparser/fill.js

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JavaScript
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"use strict";
// Create plain text entries corresponding to areas of the text that match no
// existing entries. Returns an empty array if all parts of the text have been
// parsed into recognizable entries already.
function fill(existingEntries, text) {
let position = 0;
// Fill inner parts of the text. For example, if text is `foobarbaz` and both
// `foo` and `baz` have matched into an entry, this will return a dummy entry
// corresponding to `bar`.
const result = existingEntries.reduce((acc, textSegment) => {
if (textSegment.start > position) {
acc.push({
start: position,
end: textSegment.start
});
}
position = textSegment.end;
return acc;
}, []);
// Complete the unmatched end of the text with a dummy entry
if (position < text.length) {
result.push({
start: position,
end: text.length
});
}
return result;
}
module.exports = fill;