109 lines
4.5 KiB
Markdown
109 lines
4.5 KiB
Markdown
## About
|
|
|
|
Sometimes, you just need a way to randomly display images from your filesystem.
|
|
|
|
Simply point this tool at one or more directories, and then open the specified port (default `8080`) in your browser.
|
|
|
|
A new image will be selected if you open `/` directly, or if you click on any displayed image.
|
|
|
|
Browser history is preserved, so you can always go back to any previously displayed image.
|
|
|
|
Supported file types and extensions are `bmp`, `gif`, `jp[e]g`, `png`, and `webp`.
|
|
|
|
Feature requests, code criticism, bug reports, general chit-chat, and unrelated angst accepted at `roulette@seedno.de`.
|
|
|
|
Static binary builds available [here](https://cdn.seedno.de/builds/roulette).
|
|
|
|
I only test the linux/amd64, linux/arm64, and windows/amd64 builds, the rest are all best-effort™.
|
|
|
|
x86_64 and ARM Docker images of latest version: `oci.seedno.de/seednode/roulette:latest`.
|
|
|
|
Dockerfile available [here](https://git.seedno.de/seednode/docker-roulette).
|
|
|
|
## Filtering
|
|
|
|
You can provide a comma-delimited string of alphanumeric patterns to match via the `include=` query parameter, assuming the `-f|--filter` flag is enabled.
|
|
|
|
Only filenames matching one or more of the patterns will be served.
|
|
|
|
You can also provide a comma-delimited string of alphanumeric patterns to exclude, via the `exclude=` query parameter.
|
|
|
|
Filenames matching any of these patterns will not be served.
|
|
|
|
You can also combine these two parameters, with exclusions taking priority over inclusions.
|
|
|
|
Both filtering parameters ignore the file extension and full path; they only compare against the bare filename.
|
|
|
|
## Sorting
|
|
|
|
You can specify a sorting pattern via the `sort=` query parameter, assuming the `-s|--sort` flag is enabled.
|
|
|
|
A value of `sort=asc` means files will be served in ascending order (lowest-numbered to highest).
|
|
|
|
If a file exists with a numbered suffix one higher than the currently displayed file, it will be served next.
|
|
|
|
A value of `sort=desc` means files will be served in descending order (highest-numbered to lowest).
|
|
|
|
If a file exists with a numbered suffix one lower than the currently displayed file, it will be served next.
|
|
|
|
In either case, if no sequential file is found, a new random one will be chosen.
|
|
|
|
For `sort=asc`, the lowest-numbered file matching a given name will be served first.
|
|
|
|
For `sort=desc`, the highest-numbered file will be served instead.
|
|
|
|
If any other (or no) value is provided, the selected file will be random.
|
|
|
|
Note: These patterns require sequentially-numbered files matching the following pattern: `filename###.extension`.
|
|
|
|
## Refresh
|
|
|
|
If a positive-value `refresh=<integer><unit>` query parameter is provided, the page will reload after that interval.
|
|
|
|
This can be used to generate a sort of slideshow of images.
|
|
|
|
Supported units are `ns`, `us`/`µs`, `ms`, `s`, `m`, and `h`.
|
|
|
|
## Caching
|
|
|
|
If the `-c|--cache` flag is passed, the indices of all specified paths will be cached on start.
|
|
|
|
This will slightly increase the delay before the application begins responding to requests, but should significantly speed up subsequent requests.
|
|
|
|
If any `include=`/`exclude=` filters are specified in a given request, the cache will be bypassed for that specific request.
|
|
|
|
The cache can be regenerated at any time by accessing the `/_/clear_cache` endpoint.
|
|
|
|
If `--cache-file` is set, the cache will be loaded from the specified file on start, and written to the file whenever it is re-generated.
|
|
|
|
## Statistics
|
|
|
|
If the `--stats` flag is passed, an additional endpoint, `/_/stats`, is registered.
|
|
|
|
When accessed, this endpoint returns a JSON document listing every file served, along with the number of times it has been served, its filesize, and timestamps of when it was served.
|
|
|
|
## Usage output
|
|
```
|
|
Usage:
|
|
roulette <path> [path]... [flags]
|
|
roulette [command]
|
|
|
|
Available Commands:
|
|
completion Generate the autocompletion script for the specified shell
|
|
help Help about any command
|
|
version Print version
|
|
|
|
Flags:
|
|
-c, --cache generate directory cache at startup
|
|
--cache-file string path to optional persistent cache file
|
|
-f, --filter enable filtering
|
|
-h, --help help for roulette
|
|
-p, --port uint16 port to listen on (default 8080)
|
|
-r, --recursive recurse into subdirectories
|
|
-s, --sort enable sorting
|
|
--stats expose stats endpoint
|
|
--stats-file string path to optional persistent stats file
|
|
-v, --verbose log accessed files to stdout
|
|
|
|
Use "roulette [command] --help" for more information about a command.
|
|
``` |