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- import $ from 'jquery';
- import {svg} from '../svg.js';
- import {toggleElem} from '../utils/dom.js';
-
- const {csrf} = window.config;
-
- const threshold = 50;
- let files = [];
- let $repoFindFileInput, $repoFindFileTableBody, $repoFindFileNoResult;
-
-
- // return the case-insensitive sub-match result as an array: [unmatched, matched, unmatched, matched, ...]
- // res[even] is unmatched, res[odd] is matched, see unit tests for examples
- // argument subLower must be a lower-cased string.
- export function strSubMatch(full, subLower) {
- const res = [''];
- let i = 0, j = 0;
- const fullLower = full.toLowerCase();
- while (i < subLower.length && j < fullLower.length) {
- if (subLower[i] === fullLower[j]) {
- if (res.length % 2 !== 0) res.push('');
- res[res.length - 1] += full[j];
- j++;
- i++;
- } else {
- if (res.length % 2 === 0) res.push('');
- res[res.length - 1] += full[j];
- j++;
- }
- }
- if (i !== subLower.length) {
- // if the sub string doesn't match the full, only return the full as unmatched.
- return [full];
- }
- if (j < full.length) {
- // append remaining chars from full to result as unmatched
- if (res.length % 2 === 0) res.push('');
- res[res.length - 1] += full.substring(j);
- }
- return res;
- }
-
- export function calcMatchedWeight(matchResult) {
- let weight = 0;
- for (let i = 0; i < matchResult.length; i++) {
- if (i % 2 === 1) { // matches are on odd indices, see strSubMatch
- // use a function f(x+x) > f(x) + f(x) to make the longer matched string has higher weight.
- weight += matchResult[i].length * matchResult[i].length;
- }
- }
- return weight;
- }
-
- export function filterRepoFilesWeighted(files, filter) {
- let filterResult = [];
- if (filter) {
- const filterLower = filter.toLowerCase();
- // TODO: for large repo, this loop could be slow, maybe there could be one more limit:
- // ... && filterResult.length < threshold * 20, wait for more feedbacks
- for (let i = 0; i < files.length; i++) {
- const res = strSubMatch(files[i], filterLower);
- if (res.length > 1) { // length==1 means unmatched, >1 means having matched sub strings
- filterResult.push({matchResult: res, matchWeight: calcMatchedWeight(res)});
- }
- }
- filterResult.sort((a, b) => b.matchWeight - a.matchWeight);
- filterResult = filterResult.slice(0, threshold);
- } else {
- for (let i = 0; i < files.length && i < threshold; i++) {
- filterResult.push({matchResult: [files[i]], matchWeight: 0});
- }
- }
- return filterResult;
- }
-
- export function escapePath(s) {
- return s.split('/').map(encodeURIComponent).join('/');
- }
-
- function filterRepoFiles(filter) {
- const treeLink = $repoFindFileInput.attr('data-url-tree-link');
- $repoFindFileTableBody.empty();
-
- const filterResult = filterRepoFilesWeighted(files, filter);
- const tmplRow = `<tr><td><a></a></td></tr>`;
-
- toggleElem($repoFindFileNoResult, filterResult.length === 0);
- for (const r of filterResult) {
- const $row = $(tmplRow);
- const $a = $row.find('a');
- $a.attr('href', `${treeLink}/${escapePath(r.matchResult.join(''))}`);
- const $octiconFile = $(svg('octicon-file')).addClass('gt-mr-3');
- $a.append($octiconFile);
- // if the target file path is "abc/xyz", to search "bx", then the matchResult is ['a', 'b', 'c/', 'x', 'yz']
- // the matchResult[odd] is matched and highlighted to red.
- for (let j = 0; j < r.matchResult.length; j++) {
- if (!r.matchResult[j]) continue;
- const $span = $('<span>').text(r.matchResult[j]);
- if (j % 2 === 1) $span.addClass('ui text red');
- $a.append($span);
- }
- $repoFindFileTableBody.append($row);
- }
- }
-
- async function loadRepoFiles() {
- files = await $.ajax({
- url: $repoFindFileInput.attr('data-url-data-link'),
- headers: {'X-Csrf-Token': csrf}
- });
- filterRepoFiles($repoFindFileInput.val());
- }
-
- export function initFindFileInRepo() {
- $repoFindFileInput = $('#repo-file-find-input');
- if (!$repoFindFileInput.length) return;
-
- $repoFindFileTableBody = $('#repo-find-file-table tbody');
- $repoFindFileNoResult = $('#repo-find-file-no-result');
- $repoFindFileInput.on('input', () => filterRepoFiles($repoFindFileInput.val()));
-
- loadRepoFiles();
- }
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