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fix(index): exclude Android resource XML from the index by default (#1047) (#1054)

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An Android `res/` tree (layouts, value bags, drawables, menus, navigation
graphs) holds only non-code resources that yield zero symbols, yet on an
Android app it dominates the file count (one report: 26k XML = 97% of
files, 0 symbols) — bloating the DB, slowing indexing, and padding
explore/search results and file counts with entries that have nothing to
find.

Default-ignore the Android resource type directories (`res/layout/`,
`res/values/`, `res/drawable/`, … and their `-<qualifier>` variants) at
discovery, via DEFAULT_IGNORE_PATTERNS so it applies uniformly to the git
index, the non-git walk, and change detection. The `res/<type>/`
structure is self-identifying, so non-Android projects are untouched, and
the only XML that carries symbols — MyBatis mappers under
`src/main/resources/` — never lives under `res/`, so nothing useful is
dropped. `res/raw/` is deliberately kept (arbitrary bundled assets), and
a `.gitignore` negation re-includes anything.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Colby Mchenry
2026-06-28 22:46:24 -05:00
committed by GitHub
co-authored by Claude Opus 4.8
parent 9bce41b858
commit ffff9c2b56
3 changed files with 109 additions and 0 deletions
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src/extraction/index.ts
+23
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@@ -168,12 +168,35 @@ const DEFAULT_IGNORE_DIRS: ReadonlySet<string> = new Set([
'.cache',
]);
/**
* Android resource directory types. A `res/` tree holds ONLY non-code resources —
* layouts, drawables, value bags (strings/colors/styles), menus, navigation
* graphs — split into one typed subdirectory per kind, optionally density/locale/
* version-qualified (`values-es`, `drawable-hdpi`, `layout-v21`, …). None of it
* yields an extractable code symbol, yet on an Android app it DOMINATES the tree
* (one report: 26k XML files = 97% of the project, 0 symbols), bloating the DB,
* slowing indexing, and skewing both the file count and `codegraph_explore`
* results (#1047). So these are excluded by default. The structure is
* self-identifying — a non-Android project has no `res/layout/` etc., so it's
* untouched — and the only XML that DOES produce symbols (MyBatis mappers) lives
* under `src/main/resources/`, never `res/`, so nothing useful is dropped.
* `res/raw/` is deliberately NOT here: it holds arbitrary bundled assets that can
* be code-ish (a `.sql` schema, a `.js`), so we leave it indexed. Override any of
* these with a `.gitignore` negation (e.g. `!res/values/`).
*/
const ANDROID_RES_TYPES: readonly string[] = [
'anim', 'animator', 'color', 'drawable', 'font', 'layout',
'menu', 'mipmap', 'navigation', 'transition', 'values', 'xml',
];
/** Gitignore-style patterns for the `ignore` matcher: the dirs above plus a few globs. */
const DEFAULT_IGNORE_PATTERNS: string[] = [
...Array.from(DEFAULT_IGNORE_DIRS, (d) => `${d}/`),
'*.egg-info/', // Python packaging metadata
'cmake-build-*/', // CLion / CMake build trees
'bazel-*/', // Bazel output symlink trees
// Android resource dirs at any depth, with their qualifier variants (#1047).
...ANDROID_RES_TYPES.map((t) => `**/res/${t}*/`),
];
/** True if `buf` decodes as strict UTF-8 (no invalid byte sequences). */