130 lines
5.7 KiB
Markdown
130 lines
5.7 KiB
Markdown
# swaybar\_info
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[](https://crates.io/crates/swaybar_info)
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[](https://choosealicense.com/licenses/mit/)
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[](https://github.com/Stephen-Seo/swaybar_info/raw/master/pictures/swaybar_screenshot_00.png)
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## About
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swaybar\_info is a program to be utilized by swaybar that is used by the [Sway
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tiling Wayland compositor](https://swaywm.org).
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## Changes in What Version
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[See the Changelog.md for details.](https://github.com/Stephen-Seo/swaybar_info/blob/master/Changelog.md)
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## Help Text
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Usage:
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-h | --help Prints help
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--netdev=<device_name> Check network traffic on specified device
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--netdev_width=<width> Sets the min-width of the netdev output (default 11)
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--netgraph_max_bytes=<bytes> Enable "graph" output when polling network traffic
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(Set to "dynamic" instead of a byte count for dynamic sizing)
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--netgraph_size=<size> Set the number of characters displayed in the net-graph (size of graph; default 10)
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--netgraph_dyn_display Enable showing the current maximum value in the graph
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--interval-sec=<seconds> Output at intervals of <seconds> (default 5)
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--acpi-builtin Use "acpi -b" built-in fetching (battery info, with color)
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--regex-cmd=<cmd>[SPLIT]<args...>[SPLIT]<regex> Use an output of a command as a metric
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--time-format=<date format string> Set the format string for the date
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## Usage
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# build the "release" build of the program
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cargo build --release
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# put the "release" build somewhere to be used by swaybar
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cp ./target/release/swaybar_info ~/.config/sway/
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# Alternatively, get it from crates.io/
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cargo install swaybar_info
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# The `swaybar_info` binary should be placed in $HOME/.cargo/bin/
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Put the following in your `~/.config/sway/config` (assuming the binary is at
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`$HOME/.config/sway/swaybar_info`):
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bar {
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position top
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# Set --netdev=<device> such that <device> is the network device you
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# want to monitor. You can omit --netdev=<device>, but that will also
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# cause the program to omit network traffic stats.
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status_command $HOME/.config/sway/swaybar_info --netdev=enp7s0
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# A "built-in" for "acpi -b" is available, and can be activated with the
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# --acpi-builtin flag:
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#status_command $HOME/.config/sway/swaybar_info --acpi-builtin
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# One can use the "--regex-cmd=<cmd>[SPLIT]<args...>[SPLIT]<regex>" option like so:
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#status_command $HOME/.config/sway/swaybar_info --regex-cmd="acpi[SPLIT]-b[SPLIT][0-9]+%.*"
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# This example gets battery info into the bar.
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# Multiple args should be separated with "[SPLIT]".
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# Note that the <args...> portion is optional.
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# The following uses 24 hour time
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#status_command $HOME/.config/sway/swaybar_info --time-format="%Y-%m-%d %R:%S"
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}
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## Advanced Usage of `--regex-cmd`
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If the regex provided to `swaybar_info` has two captures, the first capture will
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be used as the text to be displayed, and the second capture will be expected to
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be the color string (such as FFFFFF for white, or 44FF44 for a lighter green).
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For example, if the script invoked with `--regex-cmd` has output like the
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following:
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MPD Title | MPD Album | playingCOLORSPLIT44FF44
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That sometimes becomes:
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MPD is not running
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Then this text can be parsed with a regex like:
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status_command $HOME/.config/sway/swaybar_info \
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'--regex-cmd=$HOME/scripts/mpc/mpcCommand.sh[SPLIT]simple[SPLIT]^\(.\*?\)\(?:COLORSPLIT\([A-F0-9]{6}\)\)?$'
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Note that some characters like `*` or `(` had to be escaped because they are
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being passed verbatim to a shell.
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If only one capture is used in the regex string, then that capture will be used
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for the output text, and the color will be left unspecified (usually defaulting
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to white).
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For a reference of what kind of regex is supported,
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[see this page](https://docs.rs/regex/1.6.0/regex/index.html#syntax).
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## Net graph
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The `--netgraph_max_bytes=<bytes>` arg enables a 10-character-wide text graph
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showing a history of network traffic. The algorithm checks the larger of bytes
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sent or received in an interval and compares it to `<bytes>`. If it is greater,
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then the graph character will be a "full block" character. If it is less, then
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the graph character will be something in between out of 9 possible characters (a
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space, and [8 unicode block
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characters](https://en.wikipedia.org/wiki/Block_Elements)). Thus, this outputs
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a history graph of network traffic. A sane value for `<bytes>` can be 1048576,
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which is 1 MiB.
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Specify "dynamic" instead of a bytecount (such as
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`--netgraph_max_bytes=dynamic`) to have the graph dynamically resize based on
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the maximum amount of bytes transferred in an interval.
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When dynamic netgraph is used, swaybar\_info can display the maximum value in
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the netgraph. Use the `--netgraph_dyn_display` option to enable this. (This
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only works when dynamic netgraph is enabled with
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`--netgraph_max_bytes=dynamic`.)
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The size of the netgraph is 10 characters by default, but this can be changed by
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using `--netgraph_size=<size>`.
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## Dependencies
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Uses [`serde_json`](https://crates.io/crates/serde_json),
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[`serde`](https://crates.io/crates/serde),
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[`chrono`](https://crates.io/crates/chrono),
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and [`regex`](https://crates.io/crates/regex).
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