commit e8966ab00b13fdb2bc39fe05f8a4331b14ea297a Author: Yiyao Yu Date: Mon May 22 02:18:16 2023 -0700 Initial version built with xlib diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/target diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..604eb9c --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,92 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "cc" +version = "1.0.79" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "50d30906286121d95be3d479533b458f87493b30a4b5f79a607db8f5d11aa91f" + +[[package]] +name = "errno" +version = "0.2.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f639046355ee4f37944e44f60642c6f3a7efa3cf6b78c78a0d989a8ce6c396a1" +dependencies = [ + "errno-dragonfly", + "libc", + "winapi", +] + +[[package]] +name = "errno-dragonfly" +version = "0.1.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf" +dependencies = [ + "cc", + "libc", +] + +[[package]] +name = "exec" +version = "0.3.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "886b70328cba8871bfc025858e1de4be16b1d5088f2ba50b57816f4210672615" +dependencies = [ + "errno", + "libc", +] + +[[package]] +name = "libc" +version = "0.2.144" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2b00cc1c228a6782d0f076e7b232802e0c5689d41bb5df366f2a6b6621cfdfe1" + +[[package]] +name = "pkg-config" +version = "0.3.27" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964" + +[[package]] +name = "superl_launch" +version = "1.0.0" +dependencies = [ + "exec", + "x11", +] + +[[package]] +name = "winapi" +version = "0.3.9" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419" +dependencies = [ + "winapi-i686-pc-windows-gnu", + "winapi-x86_64-pc-windows-gnu", +] + +[[package]] +name = "winapi-i686-pc-windows-gnu" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6" + +[[package]] +name = "winapi-x86_64-pc-windows-gnu" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f" + +[[package]] +name = "x11" +version = "2.21.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "502da5464ccd04011667b11c435cb992822c2c0dbde1770c988480d312a0db2e" +dependencies = [ + "libc", + "pkg-config", +] diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..0195b8a --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,10 @@ +[package] +name = "superl_launch" +version = "1.0.0" +edition = "2021" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +exec = "0.3" +x11 = { version = "2.21", features = ["xlib"]} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..69991b5 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,83 @@ +extern crate exec; +extern crate x11; + +use std::env; +use std::process; +use std::ptr; + +const KEYID_LSUPER: u32 = 130; + +fn usage(prog: &String) -> () { + println!("usage: {prog} [cmd...]"); + println!("Launch command if only Left Super is pressed then released."); +} + +fn x11_open_display() -> Option<*mut x11::xlib::Display> { + unsafe { + let display = x11::xlib::XOpenDisplay(ptr::null()); + if display == ptr::null_mut() { + return None; + } + return Some(display); + } +} + +fn x11_close_display(display: *mut x11::xlib::Display) { + unsafe { + x11::xlib::XCloseDisplay(display); + } +} + +fn x11_check_lsuper() -> Option { + match x11_open_display() { + Some(display) => { + loop { + let mut keymap: [i8; 32] = [0; 32]; + unsafe { + x11::xlib::XQueryKeymap(display, keymap.as_mut_ptr()); + } + let (count, keyid, _) : (u32, u32, bool) = keymap.iter().fold( + (0, 0, false), |x, y| match x { + (c, k, s) => (c + y.count_ones(), + if s {k} else {k + y.leading_zeros()}, + if s {s} else {y.leading_zeros() < 8}), + }); + if count == 0 { + x11_close_display(display); + return Some(true); + } + if count > 1 || keyid != KEYID_LSUPER { + x11_close_display(display); + return Some(false); + } + } + }, + None => { + println!("Error: can't open display"); + return None; + } + + } +} + +fn single_release_launch(cmd: &String, argv: &[String]) -> () { + match x11_check_lsuper() { + Some(ret) => { + if ret == true { + println!("Error: {}", exec::Command::new(cmd).args(argv).exec()); + } + }, + None => (), + } +} + +fn main() -> () { + let args: Vec = env::args().collect(); + match &args[..] { + [prog] => usage(prog), + [_, cmd] => single_release_launch(cmd, &[]), + [_, cmd, argv @ ..] => single_release_launch(cmd, argv), + _ => (), + } + process::exit(1); +}