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README.md
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.
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.
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.