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Use weighted algorithm for string matching when finding files in repo (#21370)

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This PR is for:
* https://github.com/go-gitea/gitea/issues/20231

Now, when a user searches `word`, they always see `/{word}.txt` before
`/{w}e-g{o}t-{r}esult.{d}at`

Demo:

When searching "a", "a.ext" comes first. 

Then when searching "at", the longer matched "template" comes first.

<details>


![image](https://user-images.githubusercontent.com/2114189/194588738-3644d891-956f-40e4-b79b-b97d34265456.png)


![image](https://user-images.githubusercontent.com/2114189/194588797-9b124670-4e1e-4510-a170-780295ed89b8.png)

</details>

This PR also makes the frontend tests could import feature JS files by
introducing `jestSetup.js`

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
wxiaoguang 2022-10-08 19:22:44 +08:00 • committed by GitHub
parent 7bb12d7efa
commit 768e16dad1
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6 changed files with 118 additions and 71 deletions
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30
web_src/js/utils.js
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@ -59,36 +59,6 @@ export function parseIssueHref(href) {
return {owner, repo, type, index};
}
// return the sub-match result as an array: [unmatched, matched, unmatched, matched, ...]
// res[even] is unmatched, res[odd] is matched, see unit tests for examples
export function strSubMatch(full, sub) {
const res = [''];
let i = 0, j = 0;
const subLower = sub.toLowerCase(), 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 !== sub.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;
}
// pretty-print a number using locale-specific separators, e.g. 1200 -> 1,200
export function prettyNumber(num, locale = 'en-US') {
if (typeof num !== 'number') return '';