Add keycodemap

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

xtask/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "xtask"
+version = "0.1.0"
+authors = ["Marc-André Lureau <marcandre.lureau@redhat.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+xshell = "0.1.8"

xtask/src/main.rs

@@ -0,0 +1,62 @@
+use std::{
+    env,
+    path::{Path, PathBuf},
+};
+use xshell::{cmd, write_file};
+
+type DynError = Box<dyn std::error::Error>;
+
+fn main() {
+    if let Err(e) = try_main() {
+        eprintln!("{}", e);
+        std::process::exit(-1);
+    }
+}
+
+fn try_main() -> Result<(), DynError> {
+    let task = env::args().nth(1);
+    match task.as_ref().map(|it| it.as_str()) {
+        Some("codegen") => codegen()?,
+        _ => print_help(),
+    }
+    Ok(())
+}
+
+fn print_help() {
+    eprintln!(
+        "Tasks:
+codegen
+"
+    )
+}
+
+fn project_root() -> PathBuf {
+    Path::new(&env!("CARGO_MANIFEST_DIR"))
+        .ancestors()
+        .nth(1)
+        .unwrap()
+        .to_path_buf()
+}
+
+fn codegen() -> Result<(), DynError> {
+    let keycodemapdb = project_root().join("keycodemapdb");
+    let keycodemap_src = project_root().join("keycodemap").join("src");
+    let keymaps_csv = keycodemapdb.join("data").join("keymaps.csv");
+    let keymap_gen = keycodemapdb.join("tools").join("keymap-gen");
+
+    let keymaps = [
+        "xorgevdev",
+        "xorgkbd",
+        "xorgxquartz",
+        "xorgxwin",
+        "osx",
+        "win32",
+        "x11",
+    ];
+    for km in &keymaps {
+        let varname = format!("keymap_{}2qnum", km);
+        let out = cmd!("{keymap_gen} code-map --lang rust --varname {varname} {keymaps_csv} {km} qnum").read()?;
+        write_file(keycodemap_src.join(format!("{}.rs", varname)), out)?;
+    }
+    Ok(())
+}