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use std::env;
use std::ffi::{CStr, CString, OsString};
use std::fs;
use std::process::Command;
use std::ptr;
use std::slice;
use libc::{c_char, size_t};
use stderrlog;
use xdg;
use {Action, HeadphoneButton, MapAction, MapGroup, MapKind};
use config::{self, Config};
use trial;
#[repr(C)]
#[derive(Debug)]
pub struct Trigger {
pub buttons: *const HeadphoneButton,
pub length: size_t,
}
#[repr(C)]
pub enum ActionKind {
Map,
Command,
Mode,
}
#[derive(Default)]
pub struct State {
in_mode: Option<Vec<HeadphoneButton>>,
map_group: Option<MapGroup>,
}
#[no_mangle]
pub extern "C" fn dome_key_logger_init() {
stderrlog::new()
.module(module_path!())
.color(stderrlog::ColorChoice::Never)
.timestamp(stderrlog::Timestamp::Millisecond)
.init()
.unwrap();
}
#[no_mangle]
pub extern "C" fn dome_key_state_new() -> *mut State {
Box::into_raw(Box::new(State::default()))
}
#[no_mangle]
pub extern "C" fn dome_key_state_free(ptr: *mut State) {
if ptr.is_null() { return }
unsafe { Box::from_raw(ptr); }
}
#[no_mangle]
pub extern "C" fn dome_key_state_load_map_group(ptr: *mut State) {
match xdg::BaseDirectories::with_prefix("dome-key") {
Ok(xdg_dirs) => {
match xdg_dirs.find_config_file("mappings.dkmap") {
Some(mapping_file) => {
let state = unsafe {
assert!(!ptr.is_null());
&mut *ptr
};
let dkmap = fs::read_to_string(mapping_file)
.expect("Failed to read 'mappings.dkmap'");
let mut map_group = MapGroup::parse(&dkmap)
.expect("Failed to parse 'mappings.dkmap'");
map_group.parse_actions();
state.map_group = Some(map_group);
},
None => {
match xdg_dirs.get_config_home().to_str() {
Some(config_home) => {
error!(
"No mapping file found at '{}{}'",
config_home,
"mappings.dkmap"
)
},
None => {
error!("Config home path contains invalid unicode")
}
}
},
}
},
Err(e) => error!("{}", e),
}
}
#[no_mangle]
pub extern "C" fn dome_key_run_key_action(
state: *mut State,
trigger: Trigger,
) {
let trigger = unsafe {
assert!(!trigger.buttons.is_null());
slice::from_raw_parts(trigger.buttons, trigger.length as usize)
};
let mut state = unsafe {
assert!(!state.is_null());
&mut *state
};
run_key_action_for_mode(&mut state, trigger);
}
// TODO: un-extern
#[no_mangle]
pub extern "C" fn run_key_action_for_mode<'a>(
state: &mut State,
trigger: &'a [HeadphoneButton],
) {
match state.map_group {
Some(ref map_group) => {
let map = map_group.maps.get(trigger);
let mode = map_group.modes.get(trigger);
if let Some(in_mode) = state.in_mode.clone() {
if let Some(mode) = map_group.modes.get(&in_mode) {
// Deactivate mode by pressing current mode trigger
if &in_mode[..] == trigger {
state.in_mode = None;
return;
}
if let Some(map) = mode.get(trigger) {
run_action(&map);
}
}
}
// TODO: make sure this doesn't run when in_mode
if state.in_mode.is_none() {
if let Some(map) = map {
run_action(&map);
}
}
if mode.is_some() {
state.in_mode = Some(trigger.to_vec());
}
},
None => (),
}
}
fn run_action(map_action: &MapAction) {
match map_action.kind {
MapKind::Map => {
if let Action::Map(action) = &map_action.action {
for key in action {
key.tap()
}
}
},
MapKind::Command => {
if let Action::String(action) = &map_action.action {
let shell = match env::var_os("SHELL") {
Some(s) => s,
None => OsString::from("/bin/sh"),
};
match Command::new(shell)
.arg("-c")
.arg(action)
.spawn() {
Ok(_) => (),
Err(e) => error!(
"Command failed to start: `{}'",
e
),
}
}
},
}
}
#[no_mangle]
pub extern "C" fn dome_key_parse_args(
args: *const *const c_char,
length: size_t,
config_ptr: *mut Config
) -> *mut Config {
let args = unsafe {
assert!(!args.is_null());
let args = slice::from_raw_parts(args, length as usize);
args
.iter()
.map(|s| {
assert!(!s.is_null());
CStr::from_ptr(*s)
.to_string_lossy()
.into_owned()
})
.collect::<Vec<String>>()
};
let config = unsafe {
assert!(!config_ptr.is_null());
&mut *config_ptr
};
config::parse_args(&args, config);
config_ptr
}
#[no_mangle]
pub extern "C" fn dome_key_config_get() -> *mut Config {
match config::get_config() {
Ok(config) => Box::into_raw(Box::new(config)),
Err(e) => {
error!("{}", e);
ptr::null_mut()
},
}
}
#[no_mangle]
pub extern "C" fn dome_key_config_free(ptr: *mut Config) {
if ptr.is_null() { return }
let config = unsafe { Box::from_raw(ptr) };
if config.args.license.is_null() { return }
unsafe { CString::from_raw(config.args.license); }
}
#[no_mangle]
pub extern "C" fn dome_key_do_trial() {
trial::do_trial();
}
|
