- Replace the current vfsgen with our own bindata generator.
- zstd is used instead of gzip. This reduces the size of the resulting binary by 2MiB, the size of the bundled assets were thus reduced from 13MiB to 11MiB.
- If [the browser accepts zstd encoding](https://caniuse.com/zstd), then the compressed bytes can be served directly, otherwise it falls back to being compressed by gzip if it's not disabled via `[server].ENABLE_GZIP`
- The compression and decompression speed is roughly 4 times faster.
- The generated filesystem is now of type `fs.Fs` instead of `http.FileSystem`, this slightly simplifies the generated code and
handling of the assets.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8143
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>
- Add a new `Seq` function to the `Set` type, this returns an iterator over the values.
- Convert some users of the `Values` method to allow for more optimal code.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6676
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>
Before, in dev mode, there might be some error logs like:
```
2023/07/17 13:54:51 ...s/assetfs/layered.go:221:WatchLocalChanges() [E] Unable to watch directory .: lstat /data/work/gitea/custom/templates: no such file or directory
```
Because there is no "custom/templates" directory.
After: ignore such error, no such error message anymore.
Replace #25580Fix#19453
The problem was: when users set "GITEA__XXX__YYY" , the "install page"
doesn't respect it.
So, to make the result consistent and avoid surprising end users, now
the "install page" also writes the environment variables to the config
file.
And, to make things clear, there are enough messages on the UI to tell
users what will happen.
There are some necessary/related changes to `environment-to-ini.go`:
* The "--clear" flag is removed and it was incorrectly written there.
The "clear" operation should be done if INSTALL_LOCK=true
* The "--prefix" flag is removed because it's never used, never
documented and it only causes inconsistent behavior.

The idea is to use a Layered Asset File-system (modules/assetfs/layered.go)
For example: when there are 2 layers: "custom", "builtin", when access
to asset "my/page.tmpl", the Layered Asset File-system will first try to
use "custom" assets, if not found, then use "builtin" assets.
This approach will hugely simplify a lot of code, make them testable.
Other changes:
* Simplify the AssetsHandlerFunc code
* Simplify the `gitea embedded` sub-command code
---------
Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>