feat(virtualbox): add VirtualBox plugin

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Zedeldi 2024-10-02 15:28:42 +01:00
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# VirtualBox plugin
The `virtualbox` plugin provides many useful aliases for VirtualBox.
To use it, add `virtualbox` to the plugins array of your `.zshrc` file:
```zsh
plugins=(... virtualbox)
```
## Aliases
| Alias | Command | Description |
|:-----------------------|:--------------------------------------|:-------------------------------------------------------------------|
| `vbox-start` | `VBoxManage startvm` | Start a virtual machine |
| `vbox-start-headless` | `VBoxManage startvm --type=headless` | Start a virtual machine (headless mode) |
| `vbox-clone` | `VBoxManage clonevm --register` | Clone and register a virtual machine |
| `vbox-create` | `VBoxManage createvm --register` | Create and register a new virtual machine |
| `vbox-create-medium` | `VBoxManage createmedium` | Create a new medium |
| `vbox-delete` | `VBoxManage unregistervm --delete` | Unregister and delete a virtual machine |
| `vbox-control` | `VBoxManage controlvm` | Control a virtual machine |
| `vbox-info` | `VBoxManage showvminfo` | Show information about a virtual machine |
| `vbox-list` | `VBoxManage list` | List system information and configuration |
| `vbox-poweroff` | `VBoxManage controlvm "$1" poweroff` | Forcibly power off a virtual machine |
| `vbox-shutdown` | `VBoxManage controlvm "$1" shutdown` | Gracefully shutdown a virtual machine |
| `vbox-stop` | `aliased to vbox-shutdown` | - |
| `vbox-pause` | `VBoxManage controlvm "$1" pause` | Pause execution of a virtual machine |
| `vbox-resume` | `VBoxManage controlvm "$1" resume` | Resume execution of a virtual machine |
| `vbox-save` | `VBoxManage controlvm "$1" savestate` | Save current state of a virtual machine |
| `vbox-discard` | `VBoxManage discardstate` | Discard saved state of a virtual machine |
| `vbox-reboot` | `VBoxManage controlvm "$1" reboot` | Reboot a virtual machine |
| `vbox-reset` | `VBoxManage controlvm "$1" reset` | Reset a virtual machine |
The prefix for the aliases can be customised by setting `ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX` (default: `vbox`).
## Status prompt
Add `$(virtualbox_prompt_info [vm_name] ...)` to your prompt to show the status
of all specified virtual machines.
The plugin will add the following to your prompt for each `$vm_name`.
```text
<prefix><vm_name>:<running|notrunning><suffix>
```
You can control these parts with the following variables:
- `<prefix>`: Set `$ZSH_THEME_VIRTUALBOX_PROMPT_PREFIX`.
- `<suffix>`: Set `$ZSH_THEME_VIRTUALBOX_PROMPT_SUFFIX`.
- `<vm_name>`: name passed as parameter to the function. If you want it to be in ALL CAPS,
you can set the variable `$ZSH_THEME_VIRTUALBOX_PROMPT_CAPS` to a non-empty string.
- `<running>`: shown if the virtual machine is running.
Set `$ZSH_THEME_VIRTUALBOX_PROMPT_RUNNING`.
- `<notrunning>`: shown if the virtual machine is *not* running.
Set `$ZSH_THEME_VIRTUALBOX_PROMPT_NOTRUNNING`.
You can set `ZSH_THEME_VIRTUALBOX_PROMPT_COUNT` to a non-empty string to show a
count of running virtual machines / total.
For example, if your prompt contains `PROMPT='$(virtualbox_prompt_info "Arch Linux" "Debian")'`
and you set the following variables:
```sh
ZSH_THEME_VIRTUALBOX_PROMPT_COUNT="true"
ZSH_THEME_VIRTUALBOX_PROMPT_PREFIX="["
ZSH_THEME_VIRTUALBOX_PROMPT_SUFFIX="]"
ZSH_THEME_VIRTUALBOX_PROMPT_RUNNING="+"
ZSH_THEME_VIRTUALBOX_PROMPT_NOTRUNNING="X"
ZSH_THEME_VIRTUALBOX_PROMPT_CAPS="true"
```
If `Arch Linux` is running, and `Debian` is not, then your prompt will look like this:
```text
[1 / 2][ARCH LINUX: +][DEBIAN: X]
```

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# VirtualBox aliases
ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX="${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX:-vbox}"
# VBoxManage
declare -A manage_commands=(
["start"]="startvm"
["start-headless"]="startvm --type=headless"
["clone"]="clonevm --register"
["create"]="createvm --register"
["create-medium"]="createmedium"
["discard"]="discardstate"
["delete"]="unregistervm --delete"
["control"]="controlvm"
["info"]="showvminfo"
["list"]="list"
)
for c in "${(k)manage_commands[@]}"; do
alias "${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-${c}"="VBoxManage ${manage_commands[${c}]}"
done
unset c manage_commands
# Functions
function ${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-poweroff() {
VBoxManage controlvm "$1" poweroff
}
function ${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-shutdown() {
VBoxManage controlvm "$1" shutdown
}
function ${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-pause() {
VBoxManage controlvm "$1" pause
}
function ${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-resume() {
VBoxManage controlvm "$1" resume
}
function ${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-save() {
VBoxManage controlvm "$1" savestate
}
function ${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-reboot() {
VBoxManage controlvm "$1" reboot
}
function ${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-reset() {
VBoxManage controlvm "$1" reset
}
alias "${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-stop"="${ZSH_PLUGIN_VIRTUALBOX_ALIAS_PREFIX}-shutdown"
# VirtualBox prompt
function virtualbox_prompt_info() {
if [[ -n "${ZSH_THEME_VIRTUALBOX_PROMPT_COUNT}" ]]; then
local vm_count="$(VBoxManage list runningvms | wc -l)"
local vm_total="$(VBoxManage list vms | wc -l)"
echo -n "${ZSH_THEME_VIRTUALBOX_PROMPT_PREFIX}"
echo -n "${vm_count} / ${vm_total}"
echo -n "${ZSH_THEME_VIRTUALBOX_PROMPT_SUFFIX}"
fi
local vm_name
for vm_name in "$@"; do
echo -n "${ZSH_THEME_VIRTUALBOX_PROMPT_PREFIX}"
if [[ -n "${ZSH_THEME_VIRTUALBOX_PROMPT_CAPS}" ]]; then
echo -n "${(U)vm_name:gs/%/%%}:"
else
echo -n "${vm_name:gs/%/%%}:"
fi
if VBoxManage list runningvms | grep -w "\"${vm_name}\"" &>/dev/null; then
echo -n "${ZSH_THEME_VIRTUALBOX_PROMPT_RUNNING}"
else
echo -n "${ZSH_THEME_VIRTUALBOX_PROMPT_NOTRUNNING}"
fi
echo -n "${ZSH_THEME_VIRTUALBOX_PROMPT_SUFFIX}"
done
}