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/* 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
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
import escapeRegExp from "lodash/escapeRegExp";
import type { SearchModifiers } from "../types";
type QueryOptions = {
isGlobal?: boolean,
ignoreSpaces?: boolean,
};
/**
* Ignore doing outline matches for less than 3 whitespaces
*
* @memberof utils/source-search
* @static
*/
function ignoreWhiteSpace(str: string): string {
return /^\s{0,2}$/.test(str) ? "(?!\\s*.*)" : str;
}
function wholeMatch(query: string, wholeWord: boolean): string {
if (query === "" || !wholeWord) {
return query;
}
return `\\b${query}\\b`;
}
function buildFlags(caseSensitive: boolean, isGlobal: boolean): ?RegExp$flags {
if (caseSensitive && isGlobal) {
return "g";
}
if (!caseSensitive && isGlobal) {
return "gi";
}
if (!caseSensitive && !isGlobal) {
return "i";
}
}
export default function buildQuery(
originalQuery: string,
modifiers: SearchModifiers,
{ isGlobal = false, ignoreSpaces = false }: QueryOptions
): RegExp {
const { caseSensitive, regexMatch, wholeWord } = modifiers;
if (originalQuery === "") {
return new RegExp(originalQuery);
}
let query = originalQuery;
if (ignoreSpaces) {
query = ignoreWhiteSpace(query);
}
if (!regexMatch) {
query = escapeRegExp(query);
}
query = wholeMatch(query, wholeWord);
const flags = buildFlags(caseSensitive, isGlobal);
if (flags) {
return new RegExp(query, flags);
}
return new RegExp(query);
}
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