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.cargo
target/
vendor/
vendor.tar
debian/*
!debian/source
!debian/changelog
!debian/control
!debian/copyright
!debian/pop-launcher.links
!debian/pop-launcher.install
!debian/pop-launcher-system76-power.install
!debian/rules

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[package]
name = "pop-launcher"
version = "1.0.0"
authors = ["Michael Aaron Murphy <mmstick@pm.me>"]
edition = "2018"
[workspace]
members = ["plugins"]
[dependencies]
anyhow = "1"
async-io = "1"
async-oneshot = "0.5"
async-trait = "0.1"
flume = "=0.10.7" # Restrict version to build with 1.47.0
futures_codec = "0.4"
futures-lite = "1"
regex = "1.5"
ron = "0.6"
serde = { version = "1", features = ["derive"] }
serde_json = "1"
serde_with = "1"
slab = "0.4"
smol = "1.2.5"
strsim = "0.10"
toml = "0.5"
tracing = "0.1"
tracing-subscriber = { version = "0.2", features = ["fmt"] }
gen-z = "0.1.0"
async-executor = "1.4.1"

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This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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TARGET = debug
DEBUG ?= 0
ifeq ($(DESTDIR),)
BASE_PATH = $(HOME)/.local/
LIB_PATH = $(BASE_PATH)/share
else
BASE_PATH = $(DESTDIR)/usr/
LIB_PATH = $(BASE_PATH)/lib
endif
LAUNCHER_DIR = $(LIB_PATH)/pop-launcher
SCRIPTS_DIR = $(LAUNCHER_DIR)/scripts
PLUGIN_DIR = $(LAUNCHER_DIR)/plugins
DEFAULT_PLUGINS_BIN = $(PLUGIN_DIR)/pop-launcher-plugins
BIN_DIR = $(BASE_PATH)/bin
PLUGINS=calc desktop_entries files find pop_shell pulse recent scripts terminal web
.PHONY = all clean install uninstall vendor
ifeq ($(DEBUG),0)
TARGET = release
ARGS += --release
endif
VENDOR ?= 0
ifneq ($(VENDOR),0)
ARGS += --frozen --offline
DESKTOP_ARGS += --frozen --offline
endif
all: extract-vendor
cargo build -p pop-launcher-plugins $(ARGS)
cargo build $(ARGS)
clean:
cargo clean
distclean:
rm -rf .cargo vendor vendor.tar target
vendor:
mkdir -p .cargo
cargo vendor --sync plugins/Cargo.toml | head -n -1 > .cargo/config
echo 'directory = "vendor"' >> .cargo/config
tar pcf vendor.tar vendor
rm -rf vendor
extract-vendor:
ifeq ($(VENDOR),1)
rm -rf vendor; tar pxf vendor.tar
endif
install:
for plugin in $(PLUGINS); do \
dest=$(PLUGIN_DIR)/$${plugin}; \
mkdir -p $${dest}; \
install -Dm0644 plugins/src/plugins/$${plugin}/plugin.ron $${dest}/plugin.ron; \
done
install -Dm0755 target/$(TARGET)/pop-launcher $(BIN_DIR)/pop-launcher
install -Dm0755 target/$(TARGET)/pop-launcher-plugins $(DEFAULT_PLUGINS_BIN)
# Pop Shell Windows plugin
ln -sf $(DEFAULT_PLUGINS_BIN) $(PLUGIN_DIR)/pop_shell/pop-shell
# Desktop Entries plugin
ln -sf $(DEFAULT_PLUGINS_BIN) $(PLUGIN_DIR)/desktop_entries/desktop-entries
# Find plugin
ln -sf $(DEFAULT_PLUGINS_BIN) $(PLUGIN_DIR)/find/find
# Scripts plugin
ln -sf $(DEFAULT_PLUGINS_BIN) $(PLUGIN_DIR)/scripts/scripts
# Calculator plugin
install -Dm0755 plugins/src/plugins/calc/calc.js $(PLUGIN_DIR)/calc
install -Dm0644 plugins/src/plugins/calc/math.js $(PLUGIN_DIR)/calc
# Files plugin
install -Dm0755 plugins/src/plugins/files/files.js $(PLUGIN_DIR)/files
# Recent plugin
install -Dm0755 plugins/src/plugins/recent/recent.js $(PLUGIN_DIR)/recent
# Pulse plugin
install -Dm0755 plugins/src/plugins/pulse/pulse.js $(PLUGIN_DIR)/pulse
# Terminal plugin
install -Dm0755 plugins/src/plugins/terminal/terminal.js $(PLUGIN_DIR)/terminal
# Web plugin
install -Dm0755 plugins/src/plugins/web/web.js $(PLUGIN_DIR)/web
# Scripts
mkdir -p $(SCRIPTS_DIR)
for script in $(PWD)/scripts/session/*.sh scripts/system76-power/*.sh; do \
install -Dm0644 $${script} $(SCRIPTS_DIR); \
done

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# Pop Launcher
Modular IPC-based desktop launcher service, written in Rust. Desktop launchers may interface with this service via spawning the pop-launcher process and communicating to it via JSON IPC over the stdin and stdout pipes. The launcher service will also spawn plugins found in plugin directories on demand, based on the queries sent to the service.
Using IPC enables each plugin to isolate their data from other plugin processes and frontends that are interacting with them. If a plugin crashes, the launcher will continue functioning normally, gracefully cleaning up after the crashed process. Frontends and plugins may also be written in any language. The pop-launcher will do its part to schedule the execution of these plugins in parallel, on demand.
## Plugin Directories
- User-local plugins: `~/.local/share/pop-shell/plugins`
- System-wide install for system administrators: `/etc/pop-shell/plugins`
- Distribution packaging: `/usr/lib/pop-shell/plugins`
## Script Directories
- User-local plugins: `~/.local/share/pop-shell/scripts`
- System-wide install for system administrators: `/etc/pop-shell/scripts`
- Distribution packaging: `/usr/lib/pop-shell/scripts`
## JSON IPC
Whether implementing a frontend or a plugin, the JSON codec used by pop-launcher is line-based. Every line will contain a single JSON message That will be serialized or decoded as a `Request`, `PluginResponse`, or `Response`. These types can be referenced in [docs.rs](https://docs.rs/pop-launcher). IPC is based on standard input/output streams, so you should take care not to write logs to stdout.
### Frontend JSON IPC
The frontend will send `Request`s to the pop-launcher service through the stdin pipe. The stdout pipe will respond with `Response`s. It is ideal to design your frontend to accept responses asynchronously. Sending `Interrupt` or `Search` will cancel any active searches being performed, if the plugins that are still actively searching support cancellation.
### Plugin JSON IPC
Plugins will receive `Request`s from pop-launcher through their stdin pipe. They should respond with `PluginResponse` messages.
### Request
If you are writing a frontend, you are sending these events to the pop-launcher stdin pipe. If you are writing a plugin, the plugin will be receiving these events from its stdin.
```rust
pub enum Request {
/// Activate on the selected item
Activate(Indice),
/// Perform a tab completion from the selected item
Complete(Indice),
/// Request to end the service
Exit,
/// Requests to cancel any active searches
Interrupt,
/// Request to close the selected item
Quit(Indice),
/// Perform a search in our database
Search(String),
}
```
#### JSON Equivalent
- `{ "Activate": number }`
- `{ "Complete": number }`
- `"Exit"`
- `"Interrupt"`
- `{ "Quit": number }`
- `{ "Search": string }`
### PluginResponse
If you are writing a plugin, you should send these events to your stdout.
```rust
pub enum PluginResponse {
/// Append a new search item to the launcher
Append(SearchMeta),
/// Clear all results in the launcher list
Clear,
/// Close the launcher
Close,
// Notifies that a .desktop entry should be launched by the frontend
DesktopEntry(PathBuf),
/// Update the text in the launcher
Fill(String),
/// Indicoates that a plugin is finished with its queries
Finished,
}
```
#### JSON Equivalent
- `{ "Append": SearchMeta }`,
- `"Clear"`,
- `"Close"`,
- `{ "DesktopEntry": string }`
- `{ "Fill": string }`
- `"Finished"`
Where `SearchMeta` is:
```ts
{
id: number,
name: string,
description: string,
keywords?: Array<string>,
icon?: IconSource,
exec?: string,
window?: [number, number],
}
```
And `IconSource` is either:
- `{ "Name": string }`, where the name is a system icon, or an icon referred to by path
- `{ "Mime": string }`, where the mime is a mime essence string, to display file-based icons
### Response
Those implementing frontends should listen for these events:
```rust
pub enum Response {
// An operation was performed and the frontend may choose to exit its process.
Close,
// Notifies that a .desktop entry should be launched by the frontend
DesktopEntry(PathBuf),
// The frontend should clear its search results and display a new list
Update(Vec<SearchResult>),
// An item was selected that resulted in a need to autofill the launcher
Fill(String),
}
```
#### JSON Equivalent
- `"Close"`
- `{ "DesktopEntry": string }`
- `{ "Update": Array<SearchResult>}`
- `{ "Fill": string }`
Where `SearchResult` is:
```ts
{
id: number,
name: string,
description: string,
icon?: IconSource,
category_icon?: IconSource,
window?: [number, number]
}
```

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pop-launcher (1.0.0) hirsute; urgency=medium
* Initial release.
-- Michael Aaron Murphy <mmstick@pm.me> Thu, 12 Aug 2021 22:01:44 +0200

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Source: pop-launcher
Section: utils
Priority: optional
Maintainer: Michael Aaron Murphy <mmstick@pm.me>
Build-Depends:
cargo,
debhelper-compat (=10),
rustc (>=1.47),
Standards-Version: 4.1.1
Homepage: https://github.com/pop-os/launcher
Package: pop-launcher
Architecture: amd64
Depends: ${misc:Depends}, ${shlibs:Depends}
Description: Modular IPC-based desktop launcher service
Package: pop-launcher-system76-power
Architecture: all
Depends: ${misc:Depends}, ${shlibs:Depends}
Description: System76 Power scripts for the launcher

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/usr/lib/pop-launcher/scripts/graphics-*

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/usr/bin/
/usr/lib/pop-launcher/plugins/
/usr/lib/pop-launcher/scripts/session-logout.sh
/usr/lib/pop-launcher/scripts/session-reboot.sh
/usr/lib/pop-launcher/scripts/session-shutdown.sh
/usr/lib/pop-launcher/scripts/session-suspend.sh

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/usr/lib/pop-launcher/plugins/pop-launcher-plugins /usr/lib/pop-launcher/plugins/desktop_entries/desktop-entries
/usr/lib/pop-launcher/plugins/pop-launcher-plugins /usr/lib/pop-launcher/plugins/find/find
/usr/lib/pop-launcher/plugins/pop-launcher-plugins /usr/lib/pop-launcher/plugins/pop_shell/pop-shell
/usr/lib/pop-launcher/plugins/pop-launcher-plugins /usr/lib/pop-launcher/plugins/scripts/scripts

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#!/usr/bin/make -f
export VENDOR ?= 1
CLEAN ?= 1
DESTDIR=debian/tmp
%:
dh $@ --with=systemd
override_dh_auto_clean:
ifeq ($(CLEAN),1)
make clean
endif
ifeq ($(VENDOR),1)
if ! ischroot; then make vendor; fi
endif
override_dh_auto_build:
CARGO_HOME="$$(pwd)/target/cargo" make DESTDIR=$(DESTDIR)
override_dh_fixperms:
dh_fixperms
chmod +x debian/pop-launcher/usr/lib/pop-launcher/plugins/**/*.js
chmod +x debian/pop-launcher/usr/lib/pop-launcher/scripts/*.sh

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[package]
name = "pop-launcher-plugins"
version = "1.0.0"
authors = ["Michael Aaron Murphy <mmstick@pm.me>"]
edition = "2018"
[dependencies]
flume = "=0.10.7"
freedesktop-desktop-entry = "0.3"
futures_codec = "0.4"
futures-lite = "1.12"
fork = "0.1"
new_mime_guess = "3.0.0"
pop-launcher = { path = "../" }
serde = "1.0"
serde_json = "1.0"
smol = "1.2"
strsim = "0.10"
tracing = "0.1"
tracing-subscriber = "0.2"
zbus = "1.9"
zvariant = "2.8"

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use futures_lite::{AsyncWrite, AsyncWriteExt};
use pop_launcher::PluginResponse;
pub async fn send<W: AsyncWrite + Unpin>(tx: &mut W, response: PluginResponse) {
if let Ok(mut bytes) = serde_json::to_string(&response) {
bytes.push('\n');
let _ = tx.write(bytes.as_bytes()).await;
let _ = tx.flush().await;
}
}

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mod plugins;
use smol::block_on;
use std::io;
fn main() {
tracing_subscriber::fmt()
.with_writer(io::stderr)
.with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
.init();
std::env::args();
if let Some(plugin) = std::env::args().next() {
let start = plugin.rfind('/').map(|v| v + 1).unwrap_or(0);
match &plugin.as_str()[start..] {
"desktop-entries" => block_on(plugins::desktop_entries::main()),
"pop-shell" => block_on(plugins::pop_shell::main()),
"find" => block_on(plugins::find::main()),
"scripts" => block_on(plugins::scripts::main()),
unknown => {
eprintln!("unknown cmd: {}", unknown);
}
}
}
}

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#!/usr/bin/gjs
const { GLib, Gio } = imports.gi;
/** The directory that this script is executed from. */
const SCRIPT_DIR = GLib.path_get_dirname(new Error().stack.split(':')[0].slice(1));
/** Add our directory so we can import modules from it. */
imports.searchPath.push(SCRIPT_DIR)
const math = imports.math.math;
math.config({number: 'BigNumber' });
const STDIN = new Gio.DataInputStream({ base_stream: new Gio.UnixInputStream({ fd: 0 }) })
const STDOUT = new Gio.DataOutputStream({ base_stream: new Gio.UnixOutputStream({ fd: 1 }) })
class App {
constructor() {
this.last_query = ""
this.last_value = ""
}
search(input) {
this.last_query = input.substr(1)
try {
this.last_value = math.evaluate(this.last_query).toString()
} catch (e) {
this.last_value = this.last_query + ` x = ?`
}
this.send({ "Append": {
id: 0,
name: this.last_value,
description: '',
icon: { Name: 'accessories-calculator' },
}})
this.send("Finished")
}
activate(_id) {
this.send({ "Fill": '= ' + this.last_value })
}
send(object) {
STDOUT.write_bytes(new GLib.Bytes(JSON.stringify(object) + "\n"), null)
STDOUT.flush(null)
}
}
function main() {
/** @type {null | ByteArray} */
let input_array
/** @type {string} */
let input_str
/** @type {null | LauncherRequest} */
let event
let app = new App()
mainloop:
while (true) {
try {
[input_array,] = STDIN.read_line(null)
} catch (e) {
break
}
input_str = imports.byteArray.toString(input_array)
if ((event = parse_event(input_str)) !== null) {
if ("Search" in event) {
app.search(event.Search);
} else if ("Activate" in event) {
app.activate(event.Activate);
} else if ("Exit" === event) {
break mainloop
}
}
}
}
/**
* Parses an IPC event received from STDIN
* @param {string} input
* @returns {null | LauncherRequest}
*/
function parse_event(input) {
try {
return JSON.parse(input)
} catch (e) {
log(`Input not valid JSON`)
return null
}
}
main()

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(
name: "Calculator",
description: "Math.JS calculations",
query: (
regex: "^(=)+",
help: "= ",
isolate: true,
),
bin: (path: "calc.js"),
icon: Name("x-office-spreadsheet")
)

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use freedesktop_desktop_entry::{default_paths, DesktopEntry, Iter as DesktopIter, PathSource};
use futures_lite::{AsyncWrite, StreamExt};
use pop_launcher::*;
use pop_launcher_plugins::*;
use std::borrow::Cow;
use std::hash::{Hash, Hasher};
use std::path::PathBuf;
#[derive(Debug, Eq)]
struct Item {
appid: String,
description: String,
exec: String,
icon: Option<String>,
keywords: Option<Vec<String>>,
name: String,
path: PathBuf,
prefers_non_default_gpu: bool,
src: PathSource,
terminal_command: bool,
}
impl Hash for Item {
fn hash<H: Hasher>(&self, state: &mut H) {
self.name.hash(state);
self.src.hash(state);
}
}
impl PartialEq for Item {
fn eq(&self, other: &Self) -> bool {
self.name == other.name && self.src == other.src
}
}
pub async fn main() {
let mut app = DesktopEntryPlugin::new(async_stdout());
app.reload().await;
let mut requests = json_input_stream(async_stdin());
while let Some(result) = requests.next().await {
match result {
Ok(request) => {
tracing::debug!("received request: {:?}", request);
match request {
Request::Activate(id) => app.activate(id).await,
Request::Search(query) => app.search(&query).await,
Request::Exit => break,
_ => (),
}
}
Err(why) => {
tracing::error!("malformed JSON request: {}", why);
}
}
}
}
struct DesktopEntryPlugin<W> {
entries: Vec<Item>,
locale: Option<String>,
tx: W,
}
impl<W: AsyncWrite + Unpin> DesktopEntryPlugin<W> {
fn new(tx: W) -> Self {
let lang = std::env::var("LANG").ok();
Self {
entries: Vec::new(),
locale: lang
.as_ref()
.and_then(|l| l.split('.').next())
.map(String::from),
tx,
}
}
async fn reload(&mut self) {
self.entries.clear();
let locale = self.locale.as_ref().map(String::as_ref);
let mut deduplicator = std::collections::HashSet::new();
let current = current_desktop();
let current = current
.as_ref()
.map(|x| x.split(':').collect::<Vec<&str>>());
for (src, path) in DesktopIter::new(default_paths()) {
if let Ok(bytes) = std::fs::read_to_string(&path) {
if let Ok(entry) = DesktopEntry::decode(&path, &bytes) {
if entry.no_display() {
let matched = current
.as_ref()
.zip(entry.only_show_in())
.map(|(current, desktops)| {
!desktops
.to_ascii_lowercase()
.split(';')
.any(|desktop| current.iter().any(|c| *c == desktop))
})
.unwrap_or(false);
if matched {
continue;
}
}
if let Some((name, exec)) = entry.name(locale).zip(entry.exec()) {
if let Some(exec) = exec.split_ascii_whitespace().next() {
let item = Item {
appid: entry.appid.to_owned(),
name: name.to_owned(),
description: entry.comment(locale).unwrap_or("").to_owned(),
keywords: entry.keywords().map(|keywords| {
keywords.split(';').map(String::from).collect()
}),
icon: entry.icon().map(|x| x.to_owned()),
exec: exec.to_owned(),
path: path.clone(),
terminal_command: entry.terminal(),
prefers_non_default_gpu: entry.prefers_non_default_gpu(),
src,
};
deduplicator.insert(item);
}
}
}
}
}
self.entries.extend(deduplicator)
}
async fn activate(&mut self, id: u32) {
tracing::debug!("activate {} from {:?}", id, self.entries);
if let Some(entry) = self.entries.get(id as usize) {
let response = PluginResponse::DesktopEntry(entry.path.clone());
send(&mut self.tx, response).await;
}
}
async fn search(&mut self, query: &str) {
let query = query.to_ascii_lowercase();
let &mut Self {
ref entries,
ref mut tx,
..
} = self;
let mut items = Vec::with_capacity(16);
for (id, entry) in entries.iter().enumerate() {
items.extend(entry.name.split_ascii_whitespace());
if let Some(keywords) = entry.keywords.as_ref() {
items.extend(keywords.iter().map(String::as_str));
}
items.push(entry.exec.as_str());
for search_interest in items.drain(..) {
let search_interest = search_interest.to_ascii_lowercase();
let append = search_interest.starts_with(&*query)
|| search_interest.contains(&*query)
|| strsim::damerau_levenshtein(&*query, &*search_interest) < 3;
if append {
let response = PluginResponse::Append(SearchMeta {
id: id as u32,
name: entry.name.clone(),
description: format!("{} - {}", path_string(&entry.src), entry.description),
keywords: entry.keywords.clone(),
icon: entry.icon.clone().map(Cow::Owned).map(IconSource::Name),
exec: Some(entry.exec.clone()),
..Default::default()
});
send(tx, response).await;
break;
}
}
}
send(tx, PluginResponse::Finished).await;
}
}
fn current_desktop() -> Option<String> {
std::env::var("XDG_CURRENT_DESKTOP").ok().map(|x| {
let x = x.to_ascii_lowercase();
if x == "unity" {
"gnome".to_owned()
} else {
x
}
})
}
fn path_string(source: &PathSource) -> Cow<'static, str> {
match source {
PathSource::Local | PathSource::LocalDesktop => "Local".into(),
PathSource::LocalFlatpak => "Flatpak".into(),
PathSource::System => "System".into(),
PathSource::SystemFlatpak => "Flatpak (System)".into(),
PathSource::SystemSnap => "Snap (System)".into(),
PathSource::Other(other) => Cow::Owned(other.clone()),
}
}

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(
name: "Desktop Entries",
description: "Query applications by their .desktop entries",
bin: (path: "desktop-entries"),
icon: Name("new-window-symbolic"),
)

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#!/usr/bin/gjs
const { GLib, Gio } = imports.gi;
const STDIN = new Gio.DataInputStream({ base_stream: new Gio.UnixInputStream({ fd: 0 }) })
const STDOUT = new Gio.DataOutputStream({ base_stream: new Gio.UnixOutputStream({ fd: 1 }) })
class App {
constructor() {
/** @type Array<Selection> */
this.selections = new Array()
/** @type string */
this.parent = ""
/** @type string */
this.last_query = ""
}
/**
* Performs tab completion based on the last-given search query.
*
* @param {number} id
*/
complete(id) {
let text
const selected = this.selections[id]
if (selected) {
text = selection_path(this.parent, selected)
} else {
text = this.last_query
}
this.send({ "Fill": text })
}
/**
* Queries the plugin for results from this input
*
* @param {string} input
*/
search(input) {
if (input.startsWith('~')) {
input = GLib.get_home_dir() + input.substr(1)
}
this.last_query = input
// Add `/` to query if the input is a directory
this.last_query = (!input.endsWith('/') && Gio.file_new_for_path(input).query_file_type(0, null) === 2)
? input + '/'
: input
this.selections.splice(0)
this.parent = GLib.path_get_dirname(this.last_query)
/** @type string */
let base = GLib.path_get_basename(this.last_query)
const show_hidden = base.startsWith('.')
if (this.parent.endsWith(base)) base = ""
try {
const dir = Gio.file_new_for_path(this.parent)
if (dir.query_exists(null)) {
const entries = dir.enumerate_children('standard::*', Gio.FileQueryInfoFlags.NONE, null);
let entry;
while ((entry = entries.next_file(null)) !== null) {
/** @type {string} */
const name = entry.get_name()
if (base.length !== 0 && name.toLowerCase().indexOf(base.toLowerCase()) === -1) {
continue
}
if (!show_hidden && name.startsWith('.')) continue
const content_type = entry.get_content_type()
const directory = entry.get_file_type() === 2
this.selections.push({
id: 0,
name,
description: GLib.format_size_for_display(entry.get_size()),
content_type,
directory
})
if (this.selections.length === 20) break
}
}
const pattern_lower = this.last_query.toLowerCase()
this.selections
.sort((a, b) => {
const a_name = a.name.toLowerCase()
const b_name = b.name.toLowerCase()
const a_includes = a_name.includes(pattern_lower)
const b_includes = b_name.includes(pattern_lower)
return ((a_includes && b_includes) || (!a_includes && !b_includes)) ? (a_name > b_name ? 1 : 0) : a_includes ? -1 : b_includes ? 1 : 0;
})
let id = 0
for (const v of this.selections) {
v.id = id
id += 1
}
} catch (e) {
log(`QUERY ERROR: ${e} `)
}
for (const selection of this.selections) {
this.send({ "Append": {
id: selection.id,
name: selection.name,
description: selection.description,
icon: { "Mime": selection.content_type }
}})
}
this.send("Finished")
}
/**
* Applies an option that the user selected
*
* @param {number} id
*/
activate(id) {
const selected = this.selections[id]
if (selected) {
const path = selection_path(this.parent, selected)
try {
GLib.spawn_command_line_async(`xdg-open '${path}'`)
} catch (e) {
log(`xdg-open failed: ${e} `)
}
}
this.send("Close")
}
/**
* Sends message back to Pop Shell
*
* @param {Object} object
*/
send(object) {
STDOUT.write_bytes(new GLib.Bytes(JSON.stringify(object) + "\n"), null)
}
}
/**
*
* @param {string} parent
* @param {Selection} selection
* @returns {string}
*/
function selection_path(parent, selection) {
let text = parent
+ (parent.endsWith("/") ? "" : "/")
+ selection.name
if (selection.directory) text += "/"
return text
}
function main() {
/** @type {null | ByteArray} */
let input_array
/** @type {string} */
let input_str
/** @type {null | LauncherRequest} */
let event
let app = new App()
mainloop:
while (true) {
try {
[input_array,] = STDIN.read_line(null)
} catch (e) {
break
}
input_str = imports.byteArray.toString(input_array)
if ((event = parse_event(input_str)) !== null) {
if ("Search" in event) {
app.search(event.Search)
} else if ("Activate" in event) {
app.activate(event.Activate)
} else if ("Complete" in event) {
app.complete(event.Complete)
} else if ("Exit" === event) {
break mainloop
}
}
}
}
/**
* Parses an IPC event received from STDIN
* @param {string} input
* @returns {null | LauncherRequest}
*/
function parse_event(input) {
try {
return JSON.parse(input)
} catch (e) {
log(`Input not valid JSON`)
return null
}
}
main()

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(
name: "File Navigation",
description: "Navigate with tab autocomplete",
query: (
regex: "^(/|~).*",
help: "~/",
isolate: true,
no_sort: true,
),
bin: (path: "files.js"),
icon: Name("system-file-manager")
)

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use futures_lite::*;
use pop_launcher::*;
use pop_launcher_plugins::send;
use smol::process::{ChildStdout, Command, Stdio};
use std::borrow::Cow;
use std::cell::Cell;
use std::io;
use std::path::{Path, PathBuf};
use std::rc::Rc;
enum Event {
Activate(u32),
Search(String),
}
pub async fn main() {
let (event_tx, event_rx) = flume::unbounded::<Event>();
// Channel for cancelling searches that are in progress.
let (interrupt_tx, interrupt_rx) = flume::bounded::<()>(0);
// Indicates if a search is being performed in the background.
let active = Rc::new(Cell::new(false));
let mut app = SearchContext {
search_results: Vec::with_capacity(128),
active: active.clone(),
interrupt_rx,
out: async_stdout(),
};
// Manages the external process, tracks search results, and executes activate requests
let search_handler = async move {
while let Ok(search) = event_rx.recv_async().await {
match search {
Event::Activate(id) => {
if let Some(selection) = app.search_results.get(id as usize) {
let path = selection.clone();
let handle = smol::spawn(async move {
xdg_open(&path).await;
});
handle.detach();
send(&mut app.out, PluginResponse::Close).await;
}
}
Event::Search(search) => app.search(search).await,
}
}
};
// Forwards requests to the search handler, and performs an interrupt as necessary.
let request_handler = async move {
let interrupt = || async {
if active.get() && !interrupt_tx.is_full() {
tracing::debug!("sending interrupt");
let _ = interrupt_tx.send_async(()).await;
}
};
let mut requests = json_input_stream(async_stdin());
while let Some(result) = requests.next().await {
match result {
Ok(request) => match request {
// Launch the default application with the selected file
Request::Activate(id) => {
event_tx.send_async(Event::Activate(id)).await?;
}
// Interrupt any active searches being performed
Request::Interrupt => interrupt().await,
// Schedule a new search process to be launched
Request::Search(query) => {
interrupt().await;
let query = match query.find(' ') {
Some(pos) => query[pos..].trim_start(),
None => &query,
};
event_tx.send_async(Event::Search(query.to_owned())).await?;
active.set(true);
}
_ => (),
},
Err(why) => {
tracing::error!("malformed JSON input: {}", why);
}
}
}
Ok::<(), flume::SendError<Event>>(())
};
let _ = future::zip(request_handler, search_handler).await;
}
/// Maintains state for search requests
struct SearchContext {
pub active: Rc<Cell<bool>>,
pub interrupt_rx: flume::Receiver<()>,
pub out: smol::Unblock<io::Stdout>,
pub search_results: Vec<PathBuf>,
}
impl SearchContext {
/// Appends a new search result to the context.
async fn append(&mut self, id: u32, line: String) {
let name = line
.rfind('/')
.map(|pos| line[pos + 1..].to_owned())
.unwrap_or_else(|| line.clone());
let description = ["~/", line.as_str()].concat();
let path = PathBuf::from(line);
let response = PluginResponse::Append(SearchMeta {
id,
description,
name,
icon: Some(IconSource::Mime(if path.is_dir() {
Cow::Borrowed("inode/directory")
} else if let Some(guess) = new_mime_guess::from_path(&path).first() {
Cow::Owned(guess.essence_str().to_owned())
} else {
Cow::Borrowed("text/plain")
})),
..Default::default()
});
send(&mut self.out, response).await;
self.search_results.push(path);
}
/// Submits the query to `fdfind` and actively monitors the search results while handling interrupts.
async fn search(&mut self, search: String) {
tracing::debug!("searching for {}", search);
let mut stdout = match query(&search).await {
Ok(stdout) => futures_lite::io::BufReader::new(stdout).lines(),
Err(why) => {
tracing::error!("failed to spawn fdfind process: {}", why);
self.active.set(false);
return;
}
};
self.search_results.clear();
let mut id = 0;
let mut append;
'stream: loop {
let interrupt = async {
let _ = self.interrupt_rx.recv_async().await;
None
};
match interrupt.or(stdout.next()).await {
Some(result) => match result {
Ok(line) => append = line,
Err(why) => {
tracing::error!("error on stdout line read: {}", why);
break 'stream;
}
},
None => break 'stream,
}
self.append(id, append).await;
id += 1;
if id == 10 {
break 'stream;
}
}
send(&mut self.out, PluginResponse::Finished).await;
}
}
/// Submits the search query to `fdfind`, and returns its stdout pipe.
async fn query(arg: &str) -> io::Result<ChildStdout> {
let mut child = Command::new("fdfind")
.arg(arg)
.stdin(Stdio::null())
.stdout(Stdio::piped())
.stderr(Stdio::null())
.spawn()?;
match child.stdout.take() {
Some(stdout) => Ok(stdout),
None => Err(io::Error::new(
io::ErrorKind::BrokenPipe,
"stdout pipe is missing",
)),
}
}
/// Launches a file with its default appplication via `xdg-open`.
async fn xdg_open(file: &Path) {
let _ = Command::new("xdg-open").arg(file).spawn();
}

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(
name: "Find",
description: "Find files in the home folder",
query: (
regex: "^(find )+",
help: "find ",
isolate: true,
),
bin: (path: "find"),
icon: Name("system-file-manager")
)

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pub mod desktop_entries;
pub mod find;
pub mod pop_shell;
pub mod scripts;

124
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use futures_lite::{AsyncWrite, AsyncWriteExt, StreamExt};
use pop_launcher::*;
use pop_launcher_plugins::*;
use serde::{Deserialize, Serialize};
use std::convert::TryFrom;
use zbus::Connection;
use zvariant::{Signature, Type};
const DEST: &str = "com.System76.PopShell";
const PATH: &str = "/com/System76/PopShell";
#[derive(Debug, Deserialize)]
struct Item {
entity: (u32, u32),
name: String,
description: String,
}
impl Type for Item {
fn signature() -> Signature<'static> {
Signature::try_from("((uu)ss)").expect("bad dbus signature")
}
}
pub async fn main() {
let connection = match Connection::new_session() {
Ok(conn) => conn,
Err(_) => return,
};
let mut app = App::new(connection, async_stdout());
app.reload().await;
let mut requests = json_input_stream(async_stdin());
while let Some(request) = requests.next().await {
match request {
Ok(request) => match request {
Request::Activate(id) => app.activate(id).await,
Request::Complete(_) | Request::Interrupt => (),
Request::Quit(_id) => (),
Request::Search(query) => app.search(&query).await,
Request::Exit => break,
},
Err(why) => {
tracing::error!("malformed JSON request: {}", why);
}
}
}
}
struct App<W> {
entries: Vec<Item>,
connection: Connection,
tx: W,
}
impl<W: AsyncWrite + Unpin> App<W> {
fn new(connection: Connection, tx: W) -> Self {
Self {
entries: Vec::new(),
connection,
tx,
}
}
fn call_method<A: Serialize + Type>(
&mut self,
method: &str,
args: &A,
) -> zbus::Result<zbus::Message> {
self.connection
.call_method(Some(DEST), PATH, Some(DEST), method, args)
}
async fn reload(&mut self) {
if let Ok(message) = self.call_method("WindowList", &()) {
self.entries = message
.body::<Vec<Item>>()
.expect("pop-shell returned invalid WindowList response");
}
}
async fn activate(&mut self, id: u32) {
if let Some(id) = self.entries.get(id as usize) {
let entity = id.entity;
let _ = self.call_method("WindowFocus", &(entity,));
}
}
async fn search(&mut self, query: &str) {
let query = query.to_ascii_lowercase();
let haystack = query.split_ascii_whitespace().collect::<Vec<&str>>();
fn contains_pattern(needle: &str, haystack: &[&str]) -> bool {
let needle = needle.to_ascii_lowercase();
haystack.iter().all(|h| needle.contains(h))
}
for (id, item) in self.entries.iter().enumerate() {
let retain = contains_pattern(&item.name, &haystack)
|| contains_pattern(&item.description, &haystack);
if !retain {
continue;
}
send(
&mut self.tx,
PluginResponse::Append(SearchMeta {
id: id as u32,
name: item.name.clone(),
description: item.description.clone(),
icon: Some(IconSource::Window(item.entity)),
window: Some(item.entity),
..Default::default()
}),
)
.await;
}
send(&mut self.tx, PluginResponse::Finished).await;
let _ = self.tx.flush();
}
}

7
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(
name: "Pop Shell Windows",
description: "Active windows controllable via Pop Shell",
query: (persistent: true),
bin: (path: "pop-shell"),
icon: Name("focus-windows-symbolic"),
)

6
plugins/src/plugins/pulse/plugin.ron Normal file
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(
name: "PulseAudio Volume Control",
description: "Control PulseAudio devices and volume",
bin: (path: "pulse.js"),
icon: Name("multimedia-volume-control")
)

216
plugins/src/plugins/pulse/pulse.js Executable file
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#!/usr/bin/gjs
const { GLib, Gio } = imports.gi;
const STDIN = new Gio.DataInputStream({ base_stream: new Gio.UnixInputStream({ fd: 0 }) })
const STDOUT = new Gio.DataOutputStream({ base_stream: new Gio.UnixOutputStream({ fd: 1 }) })
/**
* @typedef {Object} Sink
* @property {number} id
* @property {string} description
*/
/**
* @returns {null | Array<Sink>}
*/
function pactl_sinks() {
try {
const resp = async_process(["pactl", "list", "sinks"])
if (!resp) return null
const { proc, stdout } = resp
let sinks = new Array()
let sink = {}
while (true) {
const [bytes] = stdout.read_line(null)
if (bytes === null) break
const line = imports.byteArray.toString(bytes)
if (line.startsWith("Sink")) {
sink.id = line.substr(6)
} else if (line.includes("Description:")) {
sink.description = line.split(' ').slice(1).join(' ')
sinks.push({ ...sink })
}
}
return sinks
} catch (e) {
log(`error: ${e}`)
return null
}
}
class App {
constructor() {
this.last_query = ""
this.shell_only = false
this.default_selections = [
{
id: 0,
name: "Toggle Mute",
description: "Silence and unsilence the default audio sink",
},
{
id: 1,
name: "Volume Up",
description: "Raise volume 5%"
},
{
id: 2,
name: "Volume Down",
description: "Lower volume 5%"
}
]
}
query(input) {
const selections = filter_selections(this.default_selections, input.toLowerCase());
for (const selection of selections) {
this.send({ "Append": selection})
}
this.send("Finished")
}
submit(id) {
let cmd = null
let sinks = pactl_sinks()
switch (id) {
case 0:
cmd = ["pactl set-sink-mute", "toggle"]
break
case 1:
cmd = ["pactl set-sink-volume", "+5%"]
break
case 2:
cmd = ["pactl set-sink-volume", "-5%"]
}
if (cmd) {
try {
for (const { id } of sinks) {
GLib.spawn_command_line_async(`${cmd[0]} ${id} ${cmd[1]}`)
}
} catch (e) {
log(`session command '${cmd}' failed: ${e}`)
}
}
}
send(object) {
STDOUT.write_bytes(new GLib.Bytes(JSON.stringify(object) + "\n"), null)
}
}
function main() {
/** @type {null | ByteArray} */
let input_array
/** @type {string} */
let input_str
/** @type {null | LauncherRequest} */
let event
let app = new App()
mainloop:
while (true) {
try {
[input_array,] = STDIN.read_line(null)
} catch (e) {
break
}
input_str = imports.byteArray.toString(input_array)
if ((event = parse_event(input_str)) !== null) {
if ("Exit" === event) {
break mainloop
} else if ("Search" in event) {
app.query(event.Search)
} else if ("Activate" in event) {
app.submit(event.Activate)
}
}
}
}
/**
* Parses an IPC event received from STDIN
* @param {string} input
* @returns {null | LauncherRequest}
*/
function parse_event(input) {
try {
return JSON.parse(input)
} catch (e) {
log(`Input not valid JSON`)
return null
}
}
/**
*
* @param {Array<string>} argv
* @returns {null | Process}
*/
function async_process(argv) {
const { DataInputStream, SubprocessFlags, SubprocessLauncher } = Gio
try {
const launcher = new SubprocessLauncher({
flags: SubprocessFlags.STDIN_PIPE
| SubprocessFlags.STDOUT_PIPE
})
const proc = launcher.spawnv(argv)
let stdout = new DataInputStream({
base_stream: proc.get_stdout_pipe(),
close_base_stream: true
})
return { proc, stdout }
} catch (e) {
log(`failed to spawn process: ${argv}\n\tCaused by: ${e}`)
return null
}
}
function filter_selections(initial, input) {
if (input.length === 0) return []
let selections = initial.map(v => ({ ...v }))
let remove = new Array()
for (let id = 0; id < selections.length; id += 1) {
const { name, description } = selections[id]
if (name.toLowerCase().includes(input) || description.toLowerCase().includes(input)) continue
remove.push(id)
}
for (const id of remove.reverse()) swap_remove(selections, id)
return selections
}
/**
*
* @param {Array<T>} array
* @param {number} index
* @returns {T | undefined}
*/
function swap_remove(array, index) {
array[index] = array[array.length - 1];
return array.pop();
}
main()

11
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(
name: "Recent Documents",
description: "Show recently-opened files",
query: (
regex: "^(recent)\\s.*",
help: "recent ",
isolate: true
),
bin: (path: "recent.js"),
icon: Name("system-file-manager")
)

142
plugins/src/plugins/recent/recent.js Executable file
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#!/usr/bin/gjs
const { GLib, Gio, Gtk } = imports.gi
const STDIN = new Gio.DataInputStream({ base_stream: new Gio.UnixInputStream({ fd: 0 }) })
const STDOUT = new Gio.DataOutputStream({ base_stream: new Gio.UnixOutputStream({ fd: 1 }) })
class App {
constructor() {
this.last_query = ""
this.manager = Gtk.RecentManager.get_default()
this.results = new Array()
}
/**
* @returns {null | Array<RecentItem>}
*/
items() {
const recent_items = this.manager.get_items()
log(`got items`)
if (!recent_items) { return null }
const items = new Array()
for (const item of recent_items) {
if (item.exists()) {
items.push({
display_name: item.get_display_name(),
mime: item.get_mime_type(),
uri: item.get_uri()
})
}
}
return items
}
query(input) {
input = input.substr(input.indexOf(" ") + 1).trim()
try {
const items = this.items()
if (items) {
const normalized = input.toLowerCase()
this.results = items
.filter(item => item.display_name.toLowerCase().includes(normalized))
.sort((a, b) => a.display_name.localeCompare(b.display_name))
.slice(0, 7)
log(`sorted`)
let id = 0
for (const item of this.results) {
this.send({ "Append": {
id,
name: item.display_name,
description: decodeURI(item.uri),
icon: { Mime: item.mime }
}})
id += 1
}
}
} catch (why) {
log(`query exception: ${why}`)
}
this.send("Finished")
}
submit(id) {
const result = this.results[id]
if (result) {
try {
GLib.spawn_command_line_async(`xdg-open '${result.uri}'`)
} catch (e) {
log(`xdg-open failed: ${e}`)
}
}
this.send("Close")
}
send(object) {
STDOUT.write_bytes(new GLib.Bytes(JSON.stringify(object) + "\n"), null)
STDOUT.flush(null)
}
}
function main() {
/** @type {null | ByteArray} */
let input_array
/** @type {string} */
let input_str
/** @type {null | LauncherRequest} */
let event
let app = new App()
mainloop:
while (true) {
try {
[input_array,] = STDIN.read_line(null)
} catch (e) {
break
}
input_str = imports.byteArray.toString(input_array)
if ((event = parse_event(input_str)) !== null) {
if ("Search" in event) {
app.query(event.Search)
} else if ("Activate" in event) {
app.submit(event.Activate);
} else if (event === "Exit") {
break mainloop
}
}
}
}
/**
* Parses an IPC event received from STDIN
* @param {string} input
* @returns {null | LauncherRequest}
*/
function parse_event(input) {
try {
return JSON.parse(input)
} catch (e) {
log(`Input not valid JSON`)
return null
}
}
main()

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use pop_launcher::*;
use pop_launcher_plugins::*;
use flume::Sender;
use futures_lite::{AsyncBufReadExt, StreamExt};
use std::os::unix::process::CommandExt;
use std::{
io,
path::{Path, PathBuf},
process::{Command, Stdio},
};
const LOCAL_PATH: &str = ".local/share/pop-launcher/scripts";
const SYSTEM_ADMIN_PATH: &str = "/etc/pop-launcher/scripts";
const DISTRIBUTION_PATH: &str = "/usr/lib/pop-launcher/scripts";
pub async fn main() {
let mut requests = json_input_stream(async_stdin());
let mut app = App::new();
app.reload().await;
while let Some(result) = requests.next().await {
match result {
Ok(response) => match response {
Request::Activate(id) => app.activate(id).await,
Request::Search(query) => app.search(&query).await,
Request::Exit => break,
_ => (),
},
Err(why) => {
tracing::error!("malformed JSON input: {}", why);
}
}
}
}
pub struct App {
scripts: Vec<ScriptInfo>,
out: smol::Unblock<io::Stdout>,
}
impl App {
fn new() -> Self {
App {
scripts: Vec::with_capacity(16),
out: async_stdout(),
}
}
async fn activate(&mut self, id: u32) {
use fork::{daemon, Fork};
if let Ok(Fork::Child) = daemon(true, true) {
if let Some(script) = self.scripts.get(id as usize) {
let interpreter = script.interpreter.as_deref().unwrap_or("sh");
let why = dbg!(Command::new(interpreter).arg(script.path.as_os_str()))
.stdin(Stdio::null())
.stdout(Stdio::null())
.stderr(Stdio::null())
.exec();
tracing::error!("failed to exec: {}", why);
std::process::exit(1);
}
}
send(&mut self.out, PluginResponse::Close).await;
}
async fn reload(&mut self) {
#[allow(deprecated)]
let home = std::env::home_dir()
.expect("user does not have home dir")
.join(LOCAL_PATH);
let paths = &[
&home,
Path::new(SYSTEM_ADMIN_PATH),
Path::new(DISTRIBUTION_PATH),
];
let (tx, rx) = flume::unbounded();
let script_sender = async move {
for path in paths {
load_from(path, tx.clone()).await;
}
};
let script_receiver = async {
while let Ok(script) = rx.recv_async().await {
tracing::debug!("appending script: {:?}", script);
self.scripts.push(script);
}
};
futures_lite::future::zip(script_sender, script_receiver).await;
}
async fn search(&mut self, query: &str) {
let &mut Self {
ref scripts,
ref mut out,
..
} = self;
for (id, script) in scripts.iter().enumerate() {
let should_include = script.name.to_ascii_lowercase().contains(query)
|| script.description.to_ascii_lowercase().contains(query)
|| script.keywords.iter().any(|k| k.contains(query));
if should_include {
send(
out,
PluginResponse::Append(SearchMeta {
id: id as u32,
name: script.name.clone(),
description: script.description.clone(),
icon: script
.icon
.as_ref()
.map(|icon| IconSource::Name(icon.clone().into())),
keywords: Some(script.keywords.clone()),
..Default::default()
}),
)
.await;
}
}
send(out, PluginResponse::Finished).await;
}
}
#[derive(Debug, Default)]
struct ScriptInfo {
interpreter: Option<String>,
name: String,
icon: Option<String>,
path: PathBuf,
keywords: Vec<String>,
description: String,
}
async fn load_from(path: &Path, tx: Sender<ScriptInfo>) {
if let Ok(directory) = path.read_dir() {
for entry in directory.filter_map(Result::ok) {
let tx = tx.clone();
let path = entry.path();
smol::spawn(async move {
let mut file = match smol::fs::File::open(&path).await {
Ok(file) => smol::io::BufReader::new(file).lines(),
Err(why) => {
tracing::error!("cannot open script at {}: {}", path.display(), why);
return;
}
};
let mut info = ScriptInfo {
path,
..Default::default()
};
let mut first = true;
while let Some(Ok(line)) = file.next().await {
if !line.starts_with('#') {
break;
}
let line = line[1..].trim();
if first {
first = false;
if let Some(interpreter) = line.strip_prefix('!') {
info.interpreter = Some(interpreter.to_owned());
continue;
}
}
if let Some(stripped) = line.strip_prefix("name:") {
info.name = stripped.trim_start().to_owned();
} else if let Some(stripped) = line.strip_prefix("description:") {
info.description = stripped.trim_start().to_owned();
} else if let Some(stripped) = line.strip_prefix("icon:") {
info.icon = Some(stripped.trim_start().to_owned());
} else if let Some(stripped) = line.strip_prefix("keywords:") {
info.keywords =
stripped.trim_start().split(' ').map(String::from).collect();
}
}
let _ = tx.send_async(info).await;
})
.detach();
}
}
}

6
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(
name: "Scripts",
description: "Shell scripts as launcher options",
bin: (path: "scripts"),
icon: Name("utilities-terminal"),
)

11
plugins/src/plugins/terminal/plugin.ron Normal file
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(
name: "Terminal Commands",
description: "Run commands in a terminal",
query: (
regex: "^(:|t:|run ).*",
help: "run ",
isolate: true,
),
bin: (path: "terminal.js"),
icon: Name("utilities-terminal"),
)

112
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#!/usr/bin/gjs
const { GLib, Gio } = imports.gi;
const STDIN = new Gio.DataInputStream({ base_stream: new Gio.UnixInputStream({ fd: 0 }) })
const STDOUT = new Gio.DataOutputStream({ base_stream: new Gio.UnixOutputStream({ fd: 1 }) })
class App {
constructor() {
this.last_query = ""
this.shell_only = false
}
/** @param {string} input */
query(input) {
if (input.startsWith(':')) {
this.shell_only = true
this.last_query = input.substr(1).trim()
} else {
this.shell_only = false
this.last_query = input.startsWith('t:')
? input.substr(2).trim()
: input.substr(input.indexOf(" ") + 1).trim()
}
this.send({ "Append": {
id: 0,
name: this.last_query,
description: "run command in terminal"
}})
this.send("Finished")
}
/** @param {number} _id */
submit(_id) {
try {
let runner
if (this.shell_only) {
runner = ""
} else {
let path = GLib.find_program_in_path('x-terminal-emulator');
let [terminal, splitter] = path ? [path, "-e"] : ["gnome-terminal", "--"];
runner = `${terminal} ${splitter} `
}
GLib.spawn_command_line_async(`${runner}sh -c '${this.last_query}; echo "Press to exit"; read t'`);
} catch (e) {
log(`command launch error: ${e}`)
}
this.send("Close")
}
/** @param {Object} object */
send(object) {
try {
STDOUT.write_bytes(new GLib.Bytes(JSON.stringify(object) + "\n"), null)
} catch (e) {
log(`failed to send response to Pop Shell: ${e}`)
}
}
}
function main() {
/** @type {null | ByteArray} */
let input_array
/** @type {string} */
let input_str
/** @type {null | LauncherRequest} */
let event
let app = new App()
mainloop:
while (true) {
try {
[input_array,] = STDIN.read_line(null)
} catch (e) {
break
}
input_str = imports.byteArray.toString(input_array)
if ((event = parse_event(input_str)) !== null) {
if ("Search" in event) {
app.query(event.Search)
} else if ("Activate" in event) {
app.submit(event.Activate)
} else if ("Exit" === event) {
break mainloop
}
}
}
}
/**
* Parses an IPC event received from STDIN
* @param {string} input
* @returns {null | LauncherRequest}
*/
function parse_event(input) {
try {
return JSON.parse(input)
} catch (e) {
log(`Input not valid JSON`)
return null
}
}
main()

10
plugins/src/plugins/web/plugin.ron Normal file
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(
name: "Web Search",
description: "Site-specific web search",
query: (
regex: "^(amazon|wiki|bing|ddg|google|yt|stack|crates|arch|pp|ppw|rdt|bc|lib|npm|gist|fh|gh|dev|sdcl|twitch|yh|alie)\\s.*",
help: "ddg ",
),
bin: (path: "web.js"),
icon: Name("system-search"),
)

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#!/usr/bin/env gjs
const { GLib, Gio } = imports.gi
const STDIN = new Gio.DataInputStream({ base_stream: new Gio.UnixInputStream({ fd: 0 }) })
const STDOUT = new Gio.DataOutputStream({ base_stream: new Gio.UnixOutputStream({ fd: 1 }) })
const ENTRIES = new Map([
['wiki', { query: 'https://wikipedia.org/w/index.php?search=', name: 'Wikipedia' }],
['bing', { query: 'https://www.bing.com/search?q=', name: 'Bing' }],
['ddg', { query: 'https://www.duckduckgo.com/?q=', name: 'DuckDuckGo' }],
['google', { query: 'https://www.google.com/search?q=', name: 'Google' }],
['yt', { query: 'https://www.youtube.com/results?search_query=', name: 'YouTube' }],
['amazon', { query: 'https://smile.amazon.com/s?k=', name: 'Amazon' }],
['stack', { query: 'https://stackoverflow.com/search?q=', name: 'Stack Overflow' }],
['crates', { query: 'https://crates.io/search?q=', name: 'Crates.io' }],
['rdt', { query: 'https://www.reddit.com/search/?q=', name: 'reddit' }],
['arch', { query: 'https://wiki.archlinux.org/index.php/', name: 'Arch Wiki' }],
['pp', { query: 'https://pop-planet.info/forums/search/1/?q=', name: 'Pop!_Planet' }],
['ppw', { query: 'https://pop-planet.info/wiki/?search=', name: 'Pop!_Planet Wiki' }],
['bc', { query: 'https://bandcamp.com/search?q=', name: 'Bandcamp' }],
['npm', { query: 'https://www.npmjs.com/search?q=', name: 'npm' }],
['lib', { query: 'https://libraries.io/search?q=', name: 'Libraries.io' }],
['gist', { query: 'https://gist.github.com/search?q=', name: 'GitHub Gist' }],
['fh', { query: 'https://flathub.org/apps/search/', name: 'Flathub' }],
['gh', { query: 'https://github.com/search?q=', name: 'GitHub' }],
['sdcl', { query: 'https://soundcloud.com/search?q=', name: 'SoundCloud' }],
['twitch', { query: 'https://www.twitch.tv/search?term=', name: 'Twitch' }],
['yh', { query: 'https://search.yahoo.com/search?p=', name: 'Yahoo!' }],
['alie', { query: 'https://www.aliexpress.com/wholesale?SearchText=', name: 'AliExpress' }],
['dev', { query: 'https://dev.to/search?q=', name: 'DEV Community' }]
])
class App {
constructor() {
this.last_query = ''
this.last_value = ''
this.query_base = ''
this.name_base = ''
this.app_info = Gio.AppInfo.get_default_for_uri_scheme('https')
}
build_query() {
return `${this.query_base}${encodeURIComponent(this.last_query)}`
}
search(input) {
const delim_position = input.indexOf(' ')
const key = input.substring(0, delim_position)
this.last_query = input.substr(delim_position + 1).trim()
const entry = ENTRIES.get(key) || { query: 'https://www.duckduckgo.com/?q=', name: 'DuckDuckGo' }
this.query_base = entry.query;
this.name_base = entry.name;
this.send({ "Append": {
id: 0,
description: this.build_query(),
name: `${this.name_base}: ${this.last_query}`,
icon: { Name: this.app_info.get_icon().to_string() },
}})
this.send("Finished")
}
submit(_id) {
try {
GLib.spawn_command_line_async(`xdg-open ${this.build_query()}`)
} catch (e) {
log(`xdg-open failed: ${e} `)
}
this.send("Close")
}
send(object) {
STDOUT.write_bytes(new GLib.Bytes(JSON.stringify(object) + "\n"), null)
}
}
function main() {
/** @type {null | ByteArray} */
let input_array
/** @type {string} */
let input_str
/** @type {null | LauncherRequest} */
let event
let app = new App()
mainloop:
while (true) {
try {
[input_array,] = STDIN.read_line(null)
} catch (e) {
break
}
input_str = imports.byteArray.toString(input_array)
if ((event = parse_event(input_str)) !== null) {
if ("Search" in event) {
app.search(event.Search)
} else if ("Activate" in event) {
app.submit(event.Activate)
} else if ("Exit" === event) {
break mainloop
}
}
}
}
/**
* Parses an IPC event received from STDIN
* @param {string} input
* @returns {null | LauncherRequest}
*/
function parse_event(input) {
try {
return JSON.parse(input)
} catch (e) {
log(`Input not valid JSON`)
return null
}
}
main()

8
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#!/bin/sh
#
# name: Log Out
# icon: system-log-out
# description: Log out to the login screen
# keywords: log out logout
gnome-session-quit --logout

8
scripts/session/session-reboot.sh Normal file
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#!/bin/sh
#
# name: Restart
# icon: system-restart
# description: Reboot the system
# keywords: power reboot restart
gnome-session-quit --reboot

8
scripts/session/session-shutdown.sh Normal file
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@ -0,0 +1,8 @@
#!/bin/sh
#
# name: Power off
# icon: system-shutdown
# description: Shut down the system
# keywords: power off shutdown
gnome-session-quit --power-off

8
scripts/session/session-suspend.sh Normal file
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@ -0,0 +1,8 @@
#!/bin/sh
#
# name: Suspend
# icon: system-suspend
# description: Suspend the system
# keywords: suspend
systemctl suspend

16
scripts/system76-power/graphics-compute.sh Normal file
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@ -0,0 +1,16 @@
#!/bin/sh
#
# name: Switch to Compute Graphics
# icon: preferences-system-symbolic
# description: Use integrated GPU for display; discrete for CUDA / OpenCL
# keywords: compute graphics switch nvidia
gnome-terminal -- sh -c '
if system76-power graphics compute; then
echo "Succesfully switched. You may now reboot"
else
echo "Failed to switch\nPress key to exit"
fi
read x
'

16
scripts/system76-power/graphics-discrete.sh Normal file
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@ -0,0 +1,16 @@
#!/bin/sh
#
# name: Switch to NVIDIA Graphics
# icon: preferences-system-symbolic
# description: Use NVIDIA GPU for display and applications
# keywords: nvidia graphics switch
gnome-terminal -- sh -c '
if system76-power graphics nvidia; then
echo "Succesfully switched. You may now reboot"
else
echo "Failed to switch\nPress key to exit"
fi
read x
'

16
scripts/system76-power/graphics-hybrid.sh Normal file
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@ -0,0 +1,16 @@
#!/bin/sh
#
# name: Switch to Hybrid Graphics
# icon: preferences-system-symbolic
# description: Use integrated GPU for display; applications may request discrete
# keywords: integrated graphics switch intel nvidia hybrid
gnome-terminal -- sh -c '
if system76-power graphics hybrid; then
echo "Succesfully switched. You may now reboot"
else
echo "Failed to switch\nPress key to exit"
fi
read x
'

16
scripts/system76-power/graphics-integrated.sh Normal file
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@ -0,0 +1,16 @@
#!/bin/sh
#
# name: Switch to Integrated Graphics
# icon: preferences-system-symbolic
# description: Use integrated GPU for display and applications
# keywords: integrated graphics switch intel
gnome-terminal -- sh -c '
if system76-power graphics integrated; then
echo "Succesfully switched. You may now reboot"
else
echo "Failed to switch\nPress key to exit"
fi
read x
'

27
src/codec.rs Normal file
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use futures_codec::{FramedRead, LinesCodec};
use futures_lite::{AsyncRead, Stream, StreamExt};
use serde::Deserialize;
use smol::Unblock;
use std::io;
/// stdin with AsyncRead support
pub fn async_stdin() -> Unblock<io::Stdin> {
Unblock::new(io::stdin())
}
/// stdout with AsyncWrite support
pub fn async_stdout() -> Unblock<io::Stdout> {
Unblock::new(io::stdout())
}
/// Creates a stream that parses JSON input line-by-line
pub fn json_input_stream<I, S>(input: I) -> impl Stream<Item = serde_json::Result<S>> + Unpin + Send
where
I: AsyncRead + Unpin + Send,
S: for<'a> Deserialize<'a>,
{
FramedRead::new(input, LinesCodec)
.take_while(Result::is_ok)
.map(Result::unwrap)
.map(|line| serde_json::from_str::<S>(&line))
}

115
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mod codec;
mod plugins;
mod service;
pub use self::codec::*;
pub use self::plugins::*;
pub use self::service::Service;
use serde::{Deserialize, Serialize};
use slab::Slab;
use std::{borrow::Cow, path::PathBuf};
pub type PluginKey = usize;
pub type Generation = u32;
pub type Indice = u32;
pub enum Event {
Request(Request),
Response((PluginKey, PluginResponse)),
PluginExit(PluginKey),
Help(async_oneshot::Sender<Slab<PluginHelp>>),
}
#[derive(Debug, Clone, Deserialize, Serialize)]
pub enum IconSource {
// Locate by name or path
Name(Cow<'static, str>),
// Icon is a mime type
Mime(Cow<'static, str>),
// Window Entity ID
Window((Generation, Indice)),
}
// Launcher frontends shall send these requests to the launcher service.
#[derive(Debug, Deserialize, Serialize)]
pub enum Request {
/// Activate on the selected item
Activate(Indice),
/// Perform a tab completion from the selected item
Complete(Indice),
/// Request to end the service
Exit,
/// Requests to cancel any active searches
Interrupt,
/// Request to close the selected item
Quit(Indice),
/// Perform a search in our database
Search(String),
}
/// Launcher frontends shall react to these responses from the launcher service.
#[derive(Debug, Deserialize, Serialize)]
pub enum Response {
// An operation was performed and the frontend may choose to exit its process.
Close,
// Notifies that a .desktop entry should be launched by the frontend
DesktopEntry(PathBuf),
// The frontend should clear its search results and display a new list
Update(Vec<SearchResult>),
// An item was selected that resulted in a need to autofill the launcher
Fill(String),
}
#[derive(Debug, Deserialize, Serialize)]
pub enum PluginResponse {
/// Append a new search item to the launcher
Append(SearchMeta),
/// Clear all results in the launcher list
Clear,
/// Close the launcher
Close,
// Notifies that a .desktop entry should be launched by the frontend
DesktopEntry(PathBuf),
/// Update the text in the launcher
Fill(String),
/// Indicoates that a plugin is finished with its queries
Finished,
}
#[derive(Debug, Default, Deserialize, Serialize)]
pub struct SearchMeta {
pub id: Indice,
pub name: String,
pub description: String,
pub keywords: Option<Vec<String>>,
pub icon: Option<IconSource>,
pub exec: Option<String>,
pub window: Option<(Generation, Indice)>,
}
/// Serialized response to launcher frontend about a search result.
#[derive(Debug, Serialize, Deserialize)]
pub struct SearchResult {
pub id: Indice,
pub name: String,
pub description: String,
#[serde(
default,
skip_serializing_if = "Option::is_none",
with = "::serde_with::rust::unwrap_or_skip"
)]
pub icon: Option<IconSource>,
#[serde(
default,
skip_serializing_if = "Option::is_none",
with = "::serde_with::rust::unwrap_or_skip"
)]
pub category_icon: Option<IconSource>,
#[serde(
default,
skip_serializing_if = "Option::is_none",
with = "::serde_with::rust::unwrap_or_skip"
)]
pub window: Option<(Generation, Indice)>,
}

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use pop_launcher::Service;
use std::io;
fn main() {
tracing_subscriber::fmt()
.with_writer(io::stderr)
.with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
.init();
let stdout = io::stdout();
smol::block_on(Service::new(stdout.lock()).exec());
}

99
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use regex::Regex;
use serde::Deserialize;
use std::{
borrow::Cow,
path::{Path, PathBuf},
};
#[derive(Debug, Default, Deserialize)]
pub struct PluginConfig {
pub name: Cow<'static, str>,
pub description: Cow<'static, str>,
#[serde(
default,
skip_serializing_if = "Option::is_none",
with = "::serde_with::rust::unwrap_or_skip"
)]
pub bin: Option<PluginBinary>,
#[serde(
default,
skip_serializing_if = "Option::is_none",
with = "::serde_with::rust::unwrap_or_skip"
)]
pub icon: Option<crate::IconSource>,
#[serde(default)]
pub query: PluginQuery,
}
#[derive(Debug, Default, Deserialize)]
pub struct PluginBinary {
path: Cow<'static, str>,
#[serde(default)]
args: Vec<Cow<'static, str>>,
}
#[derive(Debug, Default, Deserialize)]
pub struct PluginQuery {
#[serde(
default,
skip_serializing_if = "Option::is_none",
with = "::serde_with::rust::unwrap_or_skip"
)]
pub help: Option<Cow<'static, str>>,
#[serde(default)]
pub isolate: bool,
#[serde(default)]
pub no_sort: bool,
#[serde(default)]
pub persistent: bool,
#[serde(
default,
skip_serializing_if = "Option::is_none",
with = "::serde_with::rust::unwrap_or_skip"
)]
pub regex: Option<Cow<'static, str>>,
}
pub fn load(source: &Path, config_path: &Path) -> Option<(PathBuf, PluginConfig, Option<Regex>)> {
if let Ok(config_bytes) = std::fs::read_to_string(&config_path) {
let config = match ron::from_str::<PluginConfig>(&config_bytes) {
Ok(config) => config,
Err(why) => {
tracing::error!("malformed config at {}: {}", config_path.display(), why);
return None;
}
};
let exec = if let Some(bin) = config.bin.as_ref() {
if bin.path.starts_with('/') {
PathBuf::from((*bin.path).to_owned())
} else {
source.join(bin.path.as_ref())
}
} else {
tracing::error!(
"bin field is missing from config at {}",
config_path.display()
);
return None;
};
let regex = config
.query
.regex
.as_ref()
.and_then(|p| Regex::new(&*p).ok());
return Some((exec, config, regex));
}
tracing::error!("I/O error reading config at {}", config_path.display());
None
}

76
src/plugins/external/load.rs vendored Normal file
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use crate::PluginConfig;
use flume::Sender;
use futures_lite::{Stream, StreamExt};
use regex::Regex;
use std::path::{Path, PathBuf};
/// Fetches plugins installed on the system in parallel.
pub async fn from_paths(tx: Sender<(PathBuf, PluginConfig, Option<Regex>)>) {
const PLUGIN_PATHS: &[&str] = &[
// User plugins
".local/share/pop-launcher/plugins/",
// System plugins configured by admin
"/etc/pop-launcher/plugins/",
// Distribution plugins
"/usr/lib/pop-launcher/plugins/",
];
let mut futures = Vec::new();
// Searches plugin paths from highest to least priority.
// User plugins will override distribution plugins.
for path in PLUGIN_PATHS {
let path_buf;
#[allow(deprecated)]
let path = if !path.starts_with('/') {
path_buf = std::env::home_dir()
.expect("user does not have home dir")
.join(path);
path_buf.as_path()
} else {
Path::new(&path)
};
let loadable_plugins = from_path(path);
futures_lite::pin!(loadable_plugins);
// Spawn a background task to parse the config for each plugin found.
while let Some((source, config)) = loadable_plugins.next().await {
let tx = tx.clone();
let future = smol::unblock(move || {
if let Some(plugin) = crate::plugins::config::load(&source, &config) {
let _ = tx.send(plugin);
}
});
futures.push(smol::spawn(future))
}
// Ensures that plugins are loaded in the order that they were spawned.
for future in futures.drain(..) {
future.await;
}
}
}
/// Loads all plugin information found in the given path.
pub fn from_path(path: &Path) -> impl Stream<Item = (PathBuf, PathBuf)> + '_ {
gen_z::gen_z(move |mut z| async move {
if let Ok(readdir) = path.read_dir() {
for entry in readdir.filter_map(Result::ok) {
let source = entry.path();
if !source.is_dir() {
continue;
}
let config = source.join("plugin.ron");
if !config.exists() {
continue;
}
z.send((source, config)).await;
}
}
})
}

192
src/plugins/external/mod.rs vendored Normal file
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pub mod load;
use std::{
io,
path::PathBuf,
sync::{
atomic::{AtomicBool, Ordering},
Arc,
},
};
use crate::{Plugin, PluginResponse, Request};
use async_oneshot::oneshot;
use flume::Sender;
use futures_lite::{AsyncWriteExt, FutureExt, StreamExt};
use smol::{
process::{Child, Command, Stdio},
Task,
};
use tracing::{event, Level};
pub struct ExternalPlugin {
tx: Sender<PluginResponse>,
name: String,
pub cmd: PathBuf,
pub args: Vec<String>,
process: Option<(Task<()>, Child, async_oneshot::Sender<()>)>,
detached: Arc<AtomicBool>,
searching: Arc<AtomicBool>,
}
impl ExternalPlugin {
pub fn new(name: String, cmd: PathBuf, args: Vec<String>, tx: Sender<PluginResponse>) -> Self {
Self {
name,
tx,
cmd,
args,
process: None,
detached: Arc::default(),
searching: Arc::default(),
}
}
pub fn launch(&mut self) -> Option<&mut (Task<()>, Child, async_oneshot::Sender<()>)> {
event!(Level::DEBUG, "{}: launching plugin", self.name());
let child = Command::new(&self.cmd)
.args(&self.args)
.stdout(Stdio::piped())
.stdin(Stdio::piped())
.stderr(Stdio::inherit())
.spawn()
.ok();
if let Some(mut child) = child {
if let Some(stdout) = child.stdout.take() {
let detached = self.detached.clone();
let searching = self.searching.clone();
let (trip_tx, trip_rx) = oneshot::<()>();
let tx = self.tx.clone();
let name = self.name().to_owned();
// Spawn a background task to forward JSON responses from the child process.
let task = smol::spawn(async move {
let tx_ = tx.clone();
let searching_ = searching.clone();
let name_ = name.clone();
// Future for directly handling the JSON output from the process.
let responder = async move {
let mut requests = crate::json_input_stream(stdout);
while let Some(result) = requests.next().await {
match result {
Ok(response) => {
if let PluginResponse::Finished = response {
searching_.store(false, Ordering::SeqCst);
}
tracing::debug!("{}: responding with {:?}", name_, response);
let _ = tx_.send(response);
}
Err(why) => {
event!(Level::ERROR, "{}: serde error: {:?}", name_, why);
}
}
}
tracing::debug!("{}: exiting from responder", name_);
};
let trip = async move {
let _ = trip_rx.await;
};
let _ = responder.or(trip).await;
// Ensure that a task that was searching sends a finished signal if it dies.
if searching.swap(false, Ordering::SeqCst) {
let _ = tx.send(PluginResponse::Finished);
}
detached.store(true, Ordering::SeqCst);
event!(Level::DEBUG, "{}: detached plugin", name);
});
self.process = Some((task, child, trip_tx));
}
}
self.process.as_mut()
}
pub async fn process_check(&mut self) {
if let Some(mut child) = self.process.take() {
match child.1.try_status() {
Err(_) | Ok(Some(_)) => {
child.0.cancel().await;
}
Ok(None) => self.process = Some(child),
}
if self.detached.swap(false, Ordering::SeqCst) {
self.process = None;
}
}
}
pub async fn query(&mut self, event: &Request) -> io::Result<()> {
self.process_check().await;
if self.process.is_none() {
tracing::debug!("{}: relaunching process", self.name());
self.launch();
}
if let Some((_, child, _)) = self.process.as_mut() {
if let Some(stdin) = child.stdin.as_mut() {
if let Ok(mut serialized) = serde_json::to_vec(event) {
serialized.push(b'\n');
let _ = stdin.write_all(&serialized).await?;
tracing::debug!("{}: sent message to external process", self.name());
}
return Ok(());
}
}
Err(io::Error::new(
io::ErrorKind::NotConnected,
"child process could not be reached",
))
}
}
#[async_trait::async_trait]
impl Plugin for ExternalPlugin {
async fn activate(&mut self, id: u32) {
let _ = self.query(&Request::Activate(id)).await;
}
async fn complete(&mut self, id: u32) {
let _ = self.query(&Request::Complete(id)).await;
}
fn exit(&mut self) {
if let Some((_, _, mut trigger)) = self.process.take() {
let _ = trigger.send(());
}
}
async fn interrupt(&mut self) {
let _ = self.query(&Request::Interrupt).await;
}
fn name(&self) -> &str {
&self.name
}
async fn search(&mut self, query: &str) {
if self.query(&Request::Search(query.to_owned())).await.is_ok() {
self.searching.store(true, Ordering::SeqCst);
} else {
let _ = self.tx.send_async(PluginResponse::Finished).await;
}
}
async fn quit(&mut self, id: u32) {
let _ = self.query(&Request::Quit(id)).await;
}
}

95
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use crate::{Event, IconSource, Plugin, PluginConfig, PluginQuery, PluginResponse, SearchMeta};
use flume::Sender;
use slab::Slab;
use std::borrow::Cow;
pub const REGEX: Cow<'static, str> = Cow::Borrowed("^(\\?).*");
pub const CONFIG: PluginConfig = PluginConfig {
name: Cow::Borrowed("Help"),
description: Cow::Borrowed("Show available plugin prefixes"),
bin: None,
query: PluginQuery {
help: None,
isolate: true,
no_sort: true,
persistent: false,
regex: None,
},
icon: Some(IconSource::Name(Cow::Borrowed("system-help-symbolic"))),
};
pub struct PluginHelp {
pub name: String,
pub description: String,
pub help: Option<String>,
}
pub struct HelpPlugin {
pub details: Slab<PluginHelp>,
pub internal: Sender<Event>,
pub tx: Sender<PluginResponse>,
}
impl HelpPlugin {
pub fn new(internal: Sender<Event>, tx: Sender<PluginResponse>) -> Self {
Self {
details: Slab::new(),
internal,
tx,
}
}
async fn reload(&mut self) {
let (tx, rx) = async_oneshot::oneshot();
let _ = self.internal.send_async(Event::Help(tx)).await;
self.details = rx.await.expect("internal error fetching help info");
}
}
#[async_trait::async_trait]
impl Plugin for HelpPlugin {
async fn activate(&mut self, id: u32) {
if let Some(detail) = self.details.get(id as usize) {
if let Some(help) = detail.help.as_ref() {
let _ = self.tx.send_async(PluginResponse::Fill(help.clone())).await;
}
}
}
async fn complete(&mut self, id: u32) {
self.activate(id).await
}
fn exit(&mut self) {}
async fn interrupt(&mut self) {}
fn name(&self) -> &str {
"help"
}
async fn search(&mut self, _query: &str) {
if self.details.is_empty() {
self.reload().await;
}
for (id, detail) in self.details.iter() {
if detail.help.is_some() {
let _ = self
.tx
.send_async(PluginResponse::Append(SearchMeta {
id: id as u32,
name: detail.name.clone(),
description: detail.description.clone(),
..Default::default()
}))
.await;
}
}
let _ = self.tx.send_async(PluginResponse::Finished).await;
}
async fn quit(&mut self, _id: u32) {}
}

124
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mod config;
pub(crate) mod external;
pub mod help;
pub use self::config::{PluginBinary, PluginConfig, PluginQuery};
pub use self::external::ExternalPlugin;
pub use self::help::{HelpPlugin, PluginHelp};
use crate::Request;
use async_trait::async_trait;
use flume::{Receiver, Sender};
use regex::Regex;
#[async_trait]
pub trait Plugin
where
Self: Sized + Send,
{
/// Activate the selected ID from this plugin
async fn activate(&mut self, id: u32);
async fn complete(&mut self, id: u32);
fn exit(&mut self);
async fn interrupt(&mut self);
fn name(&self) -> &str;
async fn search(&mut self, query: &str);
async fn quit(&mut self, id: u32);
async fn run(&mut self, rx: Receiver<Request>) {
while let Ok(request) = rx.recv_async().await {
tracing::event!(
tracing::Level::DEBUG,
"{}: received {:?}",
self.name(),
request
);
match request {
Request::Search(query) => self.search(&query).await,
Request::Interrupt => self.interrupt().await,
Request::Activate(id) => self.activate(id).await,
Request::Complete(id) => self.complete(id).await,
Request::Quit(id) => self.quit(id).await,
Request::Exit => {
self.exit();
break;
}
}
}
tracing::event!(tracing::Level::DEBUG, "{}: exiting plugin", self.name());
}
}
/// Stores all information relevant for communicating with a plugin
///
/// Plugins may be requested to exit, and relaunched at any point in the future.
pub struct PluginConnector {
/// The deserialized configuration file for this plugin
pub config: PluginConfig,
/// Code that is executed to prepare a new instance of
/// this plugin to spawn as a background service
pub init: Box<dyn Fn() -> Sender<Request>>,
/// A compiled regular expression that a query must match
/// for the launcher service to justify spawning and sending
/// queries to this plugin
pub regex: Option<Regex>,
/// The sender of the spawned background service that will be
/// forwarded to the launncher service
pub sender: Option<Sender<Request>>,
}
impl PluginConnector {
pub fn new(
config: PluginConfig,
regex: Option<Regex>,
init: Box<dyn Fn() -> Sender<Request> + Send>,
) -> Self {
Self {
config,
init,
regex,
sender: None,
}
}
pub fn details(&self) -> PluginHelp {
PluginHelp {
name: self.config.name.as_ref().to_owned(),
description: self.config.description.as_ref().to_owned(),
help: self
.config
.query
.help
.as_ref()
.map(|x| x.as_ref().to_owned()),
}
}
/// Obtains the sender for sending messages to this plugin.
///
/// If the sender is absent, the plugin is relaunched with a new one.
pub fn sender_exec(&mut self) -> &mut Sender<Request> {
let &mut Self {
ref mut sender,
ref init,
..
} = self;
sender.get_or_insert_with(|| init())
}
/// Drops the sender, which will subsequently drop the plugin forwarder attached to it
pub fn sender_drop(&mut self) {
self.sender = None;
}
}

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use crate::*;
use flume::{unbounded, Receiver, Sender};
use futures_lite::{future, StreamExt};
use regex::Regex;
use slab::Slab;
use std::io::Write;
pub struct Service<O> {
active_search: Vec<(PluginKey, SearchMeta)>,
awaiting_results: usize,
last_query: String,
output: O,
plugins: Slab<PluginConnector>,
no_sort: bool,
search_scheduled: bool,
}
impl<O: Write> Service<O> {
pub fn new(output: O) -> Self {
Self {
active_search: Vec::new(),
awaiting_results: 0,
last_query: String::new(),
output,
plugins: Slab::new(),
no_sort: false,
search_scheduled: false,
}
}
pub async fn exec(mut self) {
let (service_tx, service_rx) = unbounded();
{
let (plugins_tx, plugins_rx) = unbounded();
let plugin_loader = plugins::external::load::from_paths(plugins_tx);
let plugin_receiver = async {
while let Ok((exec, config, regex)) = plugins_rx.recv_async().await {
tracing::info!("found plugin \"{}\"", exec.display());
if self
.plugins
.iter()
.any(|(_, p)| p.config.name == config.name)
{
tracing::info!("ignoring plugin");
continue;
}
let name = String::from(config.name.as_ref());
self.register_plugin(service_tx.clone(), config, regex, move |tx| {
ExternalPlugin::new(name.clone(), exec.clone(), Vec::new(), tx)
});
}
};
future::zip(plugin_loader, plugin_receiver).await;
}
let internal = service_tx.clone();
self.register_plugin(
service_tx.clone(),
plugins::help::CONFIG,
Some(Regex::new(plugins::help::REGEX.as_ref()).expect("failed to compile help regex")),
move |tx| HelpPlugin::new(internal.clone(), tx),
);
let f1 = request_handler(service_tx);
let f2 = self.response_handler(service_rx);
future::zip(f1, f2).await;
}
async fn response_handler(&mut self, service_rx: Receiver<Event>) {
while let Ok(event) = service_rx.recv_async().await {
match event {
Event::Request(request) => {
match request {
Request::Search(query) => self.search(query),
Request::Interrupt => self.interrupt(),
Request::Activate(id) => self.activate(id),
Request::Complete(id) => self.complete(id),
Request::Quit(id) => self.quit(id),
// When requested to exit, the service will forward that
// request to all of its plugins before exiting itself
Request::Exit => {
for (_key, plugin) in self.plugins.iter_mut() {
let tx = plugin.sender_exec();
let _ = tx.send(Request::Exit);
}
break;
}
}
}
Event::Response((plugin, response)) => match response {
PluginResponse::Append(item) => self.append(plugin, item),
PluginResponse::Clear => self.clear(),
PluginResponse::Close => self.close(),
PluginResponse::Fill(text) => self.fill(text),
PluginResponse::Finished => self.finished(plugin),
PluginResponse::DesktopEntry(path) => {
self.respond(&Response::DesktopEntry(path));
}
},
// When a plugin has exited, the sender attached to the plugin will be dropped
Event::PluginExit(plugin_id) => {
if let Some(plugin) = self.plugins.get_mut(plugin_id) {
plugin.sender_drop();
}
}
Event::Help(mut sender) => {
let mut details = Slab::new();
for (_, plugin) in self.plugins.iter() {
details.insert(plugin.details());
}
let _ = sender.send(details);
}
}
}
}
fn register_plugin<P: Plugin, I: Fn(Sender<PluginResponse>) -> P + Send + Sync + 'static>(
&mut self,
service_tx: Sender<Event>,
config: PluginConfig,
regex: Option<regex::Regex>,
init: I,
) {
let (plugin_tx, plugin_rx) = unbounded();
let entry = self.plugins.vacant_entry();
let id = entry.key();
let init = std::sync::Arc::new(init);
entry.insert(PluginConnector::new(
config,
regex,
Box::new(move || {
let (request_tx, request_rx) = unbounded();
let init = init.clone();
let plugin_tx = plugin_tx.clone();
let plugin_rx = plugin_rx.clone();
let service_tx = service_tx.clone();
smol::spawn(async move {
let mut plugin = init(plugin_tx);
let f1 = plugin.run(request_rx);
let f2 = plugin_forwarder(id, plugin_rx, service_tx);
future::zip(f1, f2).await;
})
.detach();
request_tx
}),
));
}
fn activate(&mut self, id: u32) {
if let Some((plugin, meta)) = self.search_result(id as usize) {
let _ = plugin.sender_exec().send(Request::Activate(meta.id));
}
}
fn append(&mut self, plugin: PluginKey, append: SearchMeta) {
self.active_search.push((plugin, append));
}
fn clear(&mut self) {
self.active_search.clear();
}
fn close(&mut self) {
self.respond(&Response::Close);
}
fn complete(&mut self, id: u32) {
if let Some((plugin, meta)) = self.search_result(id as usize) {
let _ = plugin.sender_exec().send(Request::Complete(meta.id));
}
}
fn fill(&mut self, text: String) {
self.respond(&Response::Fill(text));
}
fn finished(&mut self, _plugin: PluginKey) {
self.awaiting_results -= 1;
if self.awaiting_results == 0 {
if self.search_scheduled {
self.search(String::new());
return;
}
let search_list = self.sort();
self.respond(&Response::Update(search_list))
}
}
fn interrupt(&mut self) {
for (_, plugin) in self.plugins.iter_mut() {
if let Some(sender) = plugin.sender.as_mut() {
let _ = sender.send(Request::Interrupt);
}
}
}
fn quit(&mut self, id: u32) {
if let Some((plugin, meta)) = self.search_result(id as usize) {
let _ = plugin.sender_exec().send(Request::Quit(meta.id));
}
}
/// Serializes the launcher's response to stdout
fn respond<E: serde::Serialize>(&mut self, event: &E) {
if let Ok(mut vec) = serde_json::to_vec(event) {
vec.push(b'\n');
let _ = self.output.write_all(&vec);
}
}
fn search(&mut self, query: String) {
if self.awaiting_results > 0 {
tracing::debug!("backing off from search until plugins are ready");
if !self.search_scheduled {
self.interrupt();
self.search_scheduled = true;
}
return;
}
self.active_search.clear();
if !self.search_scheduled {
self.last_query = query;
}
self.search_scheduled = false;
let query = self.last_query.as_str();
let mut query_queue = Vec::new();
let mut isolated = None;
let requires_persistence = query.is_empty();
for (key, plugin) in self.plugins.iter_mut() {
// Avoid sending queries to plugins which are not matched
if let Some(regex) = plugin.regex.as_ref() {
if !regex.is_match(query) {
continue;
}
}
if requires_persistence && !plugin.config.query.persistent {
continue;
}
if plugin.config.query.isolate {
isolated = Some(key);
break;
}
query_queue.push(key);
}
if let Some(isolated) = isolated {
if let Some(plugin) = self.plugins.get_mut(isolated) {
if plugin
.sender_exec()
.send(Request::Search(query.to_owned()))
.is_ok()
{
tracing::debug!("submitted query to {}", plugin.config.name);
self.awaiting_results += 1;
self.no_sort = plugin.config.query.no_sort;
}
}
} else {
for plugin in query_queue {
if let Some(plugin) = self.plugins.get_mut(plugin) {
if plugin
.sender_exec()
.send(Request::Search(query.to_owned()))
.is_ok()
{
tracing::debug!("submitted query to {}", plugin.config.name);
self.awaiting_results += 1;
}
}
}
}
}
/// From a given position ID, fetch the search result and its associated plugin
fn search_result(&mut self, id: usize) -> Option<(&mut PluginConnector, &mut SearchMeta)> {
let &mut Self {
ref mut active_search,
ref mut plugins,
..
} = self;
active_search
.get_mut(id)
.and_then(move |(plugin_id, meta)| {
plugins.get_mut(*plugin_id).map(|plugin| (plugin, meta))
})
}
fn sort(&mut self) -> Vec<SearchResult> {
let &mut Self {
ref mut active_search,
ref mut no_sort,
ref last_query,
ref plugins,
..
} = self;
let query = &last_query.to_ascii_lowercase();
use std::cmp::Ordering;
if *no_sort {
*no_sort = false;
} else {
active_search.sort_by(|a, b| {
fn calculate_weight(meta: &SearchMeta, query: &str) -> usize {
let mut weight = 0;
let name = meta.name.to_ascii_lowercase();
let description = meta.description.to_ascii_lowercase();
let exec = meta
.exec
.as_ref()
.map(|exec| exec.to_ascii_lowercase())
.unwrap_or_default();
if !name.starts_with(query) {
weight = 1;
if !name.contains(query) {
weight = strsim::damerau_levenshtein(&name, query)
.min(strsim::damerau_levenshtein(&description, query));
if let Some(keywords) = meta.keywords.as_ref() {
for keyword in keywords.iter() {
let keyword = keyword.to_ascii_lowercase();
weight = if keyword.starts_with(query)
|| keyword.contains(query)
{
1
} else {
weight.min(strsim::damerau_levenshtein(query, &keyword) + 1)
}
}
}
}
}
if exec.contains(query) {
weight = if exec.starts_with(query) {
weight.min(2)
} else {
weight.min(strsim::damerau_levenshtein(query, &exec))
}
}
weight
}
let a_weight = calculate_weight(&a.1, query);
let b_weight = calculate_weight(&b.1, query);
match a_weight.cmp(&b_weight) {
Ordering::Equal => {
let a_len = a.1.name.len();
let b_len = b.1.name.len();
a_len.cmp(&b_len)
}
other => other,
}
});
}
let take = if last_query.starts_with('/') | last_query.starts_with('~') {
100
} else {
8
};
let mut windows = Vec::with_capacity(take);
let mut non_windows = Vec::with_capacity(take);
let search_results =
active_search
.iter()
.take(take)
.enumerate()
.map(|(id, (plugin, meta))| SearchResult {
id: id as u32,
name: meta.name.clone(),
description: meta.description.clone(),
icon: meta.icon.clone(),
category_icon: plugins
.get(*plugin)
.and_then(|conn| conn.config.icon.clone()),
window: meta.window,
});
for result in search_results {
if result.window.is_some() {
windows.push(result);
} else {
non_windows.push(result)
}
}
windows.append(&mut non_windows);
windows
}
}
async fn plugin_forwarder(
plugin_id: PluginKey,
receiver: Receiver<PluginResponse>,
forwarder: Sender<Event>,
) {
while let Ok(response) = receiver.recv_async().await {
let _ = forwarder.send(Event::Response((plugin_id, response)));
}
let _ = forwarder.send(Event::PluginExit(plugin_id));
}
/// Handles Requests received from a frontend
async fn request_handler(tx: Sender<Event>) {
let mut requested_to_exit = false;
let mut request_stream = json_input_stream(async_stdin());
while let Some(result) = request_stream.next().await {
match result {
Ok(request) => {
if let Request::Exit = request {
requested_to_exit = true
}
let _ = tx.send(Event::Request(request));
if requested_to_exit {
break;
}
}
Err(why) => {
tracing::error!("Request JSON is malformed: {}", why);
}
}
}
tracing::debug!("no longer listening for requests")
}