Source code
Revision control
Copy as Markdown
Other Tools
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
// Maybe reuse file search's functions?
import getMatches from "./get-matches";
export function findSourceMatches(content, queryText, options) {
if (queryText == "") {
return [];
}
const text = content.value;
const lines = text.split("\n");
return getMatches(queryText, text, options).map(({ line, ch, match }) => {
const { value, matchIndex } = truncateLine(lines[line], ch);
return {
line: line + 1,
column: ch,
matchIndex,
match,
value,
};
});
}
// This is used to find start of a word, so that cropped string look nice
const startRegex = /([ !@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?])/g;
// Similarly, find
const endRegex = new RegExp(
[
"([ !@#$%^&*()_+-=[]{};':\"\\|,.<>/?])",
'[^ !@#$%^&*()_+-=[]{};\':"\\|,.<>/?]*$"/',
].join("")
);
// For texts over 100 characters this truncates the text (for display)
// around the context of the matched text.
function truncateLine(text, column) {
if (text.length < 100) {
return {
matchIndex: column,
value: text,
};
}
// Initially take 40 chars left to the match
const offset = Math.max(column - 40, 0);
// 400 characters should be enough to figure out the context of the match
const truncStr = text.slice(offset, column + 400);
let start = truncStr.search(startRegex);
let end = truncStr.search(endRegex);
if (start > column) {
// No word separator found before the match, so we take all characters
// before the match
start = -1;
}
if (end < column) {
end = truncStr.length;
}
const value = truncStr.slice(start + 1, end);
return {
matchIndex: column - start - offset - 1,
value,
};
}