ambient/README.md

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ambient
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========
This is a script which captures ambient information available on certain public networks, such as the route, speed and delay information available on:
- German ICE trains
- Eurostar
- Austrian RailJet trains
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If you spot a network with some tidbits of information available, please open a PR to add it!
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Requirements
------------
The set of dependencies is intentionally kept small:
- `fish` (the shell)
- `iw` (to check what network you're on)
- `jq`
- The POSIX standard tools, such as `grep` and `sed`
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Usage
-----
If you just run `ambient` on its own, it'll output all the data it can find in `KEY=VALUE` format, such that it can be given to `env`.
As a convenience, running eg. `ambient myscript.py` will run the given command with all of this data in the environment.
Example output (abbreviated):
```
$ ./ambient
AMBIENT_DE_ICE_SPEED=158
AMBIENT_DE_ICE_SPEED_UNIT=km/h
AMBIENT_DE_ICE_TZN=Tz4652
AMBIENT_DE_ICE_SERIES=406
AMBIENT_DE_ICE_WAGON_CLASS=SECOND
AMBIENT_DE_ICE_TRAIN_TYPE=ICE
AMBIENT_DE_ICE_TRIP_DATE=2020-01-02
AMBIENT_DE_ICE_VZN=14
AMBIENT_DE_ICE_STOP_FIRST=Frankfurt (Main) Hbf
AMBIENT_DE_ICE_STOP_FIRST_DEPART_SCHEDULED=2020-01-02T13:29:00Z
AMBIENT_DE_ICE_STOP_FIRST_DEPART_ACTUAL=2020-01-02T13:54:00Z
AMBIENT_DE_ICE_STOP_FIRST_DEPART_DELAY=+25
AMBIENT_DE_ICE_STOP_LAST=Bruxelles Midi
AMBIENT_DE_ICE_STOP_LAST_ARRIVE_SCHEDULED=2020-01-02T16:35:00Z
AMBIENT_DE_ICE_STOP_LAST_ARRIVE_ACTUAL=2020-01-02T17:32:00Z
AMBIENT_DE_ICE_STOP_LAST_ARRIVE_DELAY=+57
AMBIENT_DE_ICE_STOP_NEXT=Bruxelles-Nord
AMBIENT_DE_ICE_STOP_NEXT_DEPART_SCHEDULED=2020-01-02T16:28:00Z
AMBIENT_DE_ICE_STOP_NEXT_DEPART_ACTUAL=2020-01-02T17:25:00Z
AMBIENT_DE_ICE_STOP_NEXT_DEPART_DELAY=+57
AMBIENT_DE_ICE_STOP_NEXT_ARRIVE_SCHEDULED=2020-01-02T16:26:00Z
AMBIENT_DE_ICE_STOP_NEXT_ARRIVE_ACTUAL=2020-01-02T17:23:00Z
AMBIENT_DE_ICE_STOP_NEXT_ARRIVE_DELAY=+57
```
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Running `ambient-widgets` will run the built-in widget scripts (WIP, uses Font Awesome):
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```
$ ./ambient-widgets
 Bruxelles-Nord
 ICE-14
 219 km/h
```
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Status bar usage
----------------
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Do you want to see how late your current train is, from the comfort of your status bar? Look no further!
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### awesomewm (+ vicious)
Create a custom widget which calls the widget script, and replace all newlines with spaces.
```
myambien = wibox.widget.textbox()
vicious.register(myambien, function(format, warg)
local f = io.popen("echo -n ' '; " .. os.getenv("HOME") .. "/Projects/src/github.com/liclac/ambient/ambient-widgets")
local out = f:read("*all")
f:close()
return { out:gsub('\n', ' ') }
end, "$1", 31)
```
Remember to add it to your `wibox` list! Search for `mytextclock` with a default configuration.
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### Bitbar
Link `bitbar/ambient.60s.sh` into your Bitbar plugin directory.
```
ln -s $(pwd)/bitbar/ambient.60s.sh ~/.bitbar
```
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Why `fish`? Why not `bash` or `zsh`?
------------------------------------
First of all, this was written on a horribly delayed ICE train, and I happen to use `fish` as my daily driver.
Second, it's quite fast and has a number of nice features like lazy-loaded functions, and semantics that make it harder to shoot yourself in the foot.
If people want it migrated to `bash` or `zsh`, that's totally doable.