add basic settings stuff

.gitignore

@@ -1 +1,4 @@
 /target
+
+# testing artifact
+/parsers

Cargo.lock

@@ -75,15 +75,26 @@ dependencies = [
  "shlex",
 ]
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "chrysopoeia"
 version = "0.1.0"
 dependencies = [
  "anyhow",
  "clap",
+ "config",
  "git2",
+ "lazy_static",
  "phf",
+ "serde",
+ "tempfile",
  "thiserror",
+ "xdg",
 ]
 
 [[package]]
@@ -132,6 +143,18 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
 
+[[package]]
+name = "config"
+version = "0.15.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "595aae20e65c3be792d05818e8c63025294ac3cb7e200f11459063a352a6ef80"
+dependencies = [
+ "pathdiff",
+ "serde",
+ "toml",
+ "winnow",
+]
+
 [[package]]
 name = "displaydoc"
 version = "0.2.5"
@@ -143,6 +166,28 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "equivalent"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+
+[[package]]
+name = "errno"
+version = "0.3.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33d852cb9b869c2a9b3df2f71a3074817f01e1844f839a144f5fcef059a4eb5d"
+dependencies = [
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "fastrand"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.1"
@@ -152,6 +197,18 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73fea8450eea4bac3940448fb7ae50d91f034f941199fcd9d909a5a07aa455f0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasi",
+]
+
 [[package]]
 name = "git2"
 version = "0.20.1"
@@ -167,6 +224,12 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -312,6 +375,16 @@ dependencies = [
  "icu_properties",
 ]
 
+[[package]]
+name = "indexmap"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3954d50fe15b02142bf25d3b8bdadb634ec3948f103d04ffe3031bc8fe9d7058"
+dependencies = [
+ "equivalent",
+ "hashbrown",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.1"
@@ -327,6 +400,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "libc"
 version = "0.2.171"
@@ -373,6 +452,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe7db12097d22ec582439daf8618b8fdd1a7bef6270e9af3b1ebcd30893cf413"
+
 [[package]]
 name = "litemap"
 version = "0.7.5"
@@ -385,6 +470,12 @@ version = "0.4.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "30bde2b3dc3671ae49d8e2e9f044c7c005836e7a023ee57cffa25ab82764bb9e"
 
+[[package]]
+name = "memchr"
+version = "2.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
 [[package]]
 name = "once_cell"
 version = "1.21.1"
@@ -409,6 +500,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "pathdiff"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df94ce210e5bc13cb6651479fa48d14f601d9858cfe0467f43ae157023b938d3"
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.1"
@@ -481,6 +578,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5"
+
 [[package]]
 name = "rand"
 version = "0.8.5"
@@ -496,6 +599,19 @@ version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 
+[[package]]
+name = "rustix"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e56a18552996ac8d29ecc3b190b4fdbb2d91ca4ec396de7bbffaf43f3d637e96"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.219"
@@ -516,6 +632,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87607cb1398ed59d48732e575a4c28a7a8ebf2454b964fe3f224f2afc07909e1"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "shlex"
 version = "1.3.0"
@@ -568,6 +693,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.19.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7437ac7763b9b123ccf33c338a5cc1bac6f69b45a136c19bdd8a65e3916435bf"
+dependencies = [
+ "fastrand",
+ "getrandom",
+ "once_cell",
+ "rustix",
+ "windows-sys",
+]
+
 [[package]]
 name = "thiserror"
 version = "2.0.12"
@@ -598,6 +736,40 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "toml"
+version = "0.8.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd87a5cdd6ffab733b2f74bc4fd7ee5fff6634124999ac278c35fc78c6120148"
+dependencies = [
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0dd7358ecb8fc2f8d014bf86f6f638ce72ba252a2c3a2572f2a795f1d23efb41"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.22.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17b4795ff5edd201c7cd6dca065ae59972ce77d1b80fa0a84d94950ece7d1474"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "winnow",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.18"
@@ -639,6 +811,15 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
+[[package]]
+name = "wasi"
+version = "0.14.2+wasi-0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
+dependencies = [
+ "wit-bindgen-rt",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
@@ -712,6 +893,24 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
+[[package]]
+name = "winnow"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e97b544156e9bebe1a0ffbc03484fc1ffe3100cbce3ffb17eac35f7cdd7ab36"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "write16"
 version = "1.0.0"
@@ -724,6 +923,12 @@ version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
 
+[[package]]
+name = "xdg"
+version = "2.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "213b7324336b53d2414b2db8537e56544d981803139155afa84f76eeebb7a546"
+
 [[package]]
 name = "yoke"
 version = "0.7.5"

Cargo.toml

@@ -7,6 +7,11 @@ license = "GPL-3.0-only"
 [dependencies]
 anyhow = "1.0.97"
 clap = { version = "4.5.32", features = ["derive"] }
+config = { version = "0.15.11", default-features = false, features = ["toml"] }
 git2 = "0.20.1"
+lazy_static = "1.5.0"
 phf = { version = "0.11.3", features = ["macros"] }
+serde = { version = "1.0.219", features = ["derive"] }
+tempfile = "3.19.1"
 thiserror = "2.0.12"
+xdg = "2.5.2"

src/main.rs

@@ -1,14 +1,11 @@
-use std::{
+use std::{env::consts::DLL_EXTENSION, fs::create_dir_all};
-    env::consts::DLL_EXTENSION,
-    fs::{canonicalize, create_dir_all},
-    path::PathBuf,
-};
 
 use clap::Parser;
 use git2::Repository;
 
 mod cc;
 mod languages;
+mod settings;
 
 use languages::{InstallInfo, get_install_info};
 use settings::{Settings, get_settings};
@@ -22,16 +19,19 @@ struct Cli {
 fn main() -> anyhow::Result<()> {
     let Cli { language } = Cli::parse();
 
-    let parser_dir = canonicalize(PathBuf::from("parsers"))?;
+    let Settings { parser_dir } = get_settings()?;
-    let src_dir = PathBuf::from("parser_src");
+
+    let src_dir = tempfile::tempdir()?;
 
     create_dir_all(&parser_dir)?;
-    create_dir_all(&src_dir)?;
+
+    // have to use a canonical path bc compiler runs elsewhere
+    let parser_dir = parser_dir.canonicalize()?;
 
     let InstallInfo { url, files } =
         get_install_info(&language).ok_or(anyhow::anyhow!("unknown language `{language}`"))?;
 
-    let repo_path = src_dir.join(&language);
+    let repo_path = src_dir.as_ref().join(&language);
     Repository::clone(url, &repo_path)?;
 
     let output_path = parser_dir.join(language).with_extension(DLL_EXTENSION);
@@ -40,5 +40,8 @@ fn main() -> anyhow::Result<()> {
     build.dir(&repo_path).input_files(files);
     build.compile(&output_path)?;
 
+    // close explicitly to prevent premature drop
+    src_dir.close()?;
+
     Ok(())
 }

src/settings.rs

@@ -0,0 +1,28 @@
+use std::path::PathBuf;
+
+use config::{Config, ConfigError, File};
+use lazy_static::lazy_static;
+use serde::Deserialize;
+
+lazy_static! {
+    static ref XDG: xdg::BaseDirectories =
+        xdg::BaseDirectories::with_prefix("chrysopoeia").unwrap();
+}
+
+#[derive(Debug, Default, Deserialize)]
+pub struct Settings {
+    #[serde(default = "default_parser_dir")]
+    pub parser_dir: PathBuf,
+}
+
+fn default_parser_dir() -> PathBuf {
+    XDG.get_data_file("parsers")
+}
+
+pub fn get_settings() -> Result<Settings, ConfigError> {
+    Config::builder()
+        .add_source(File::from(XDG.get_config_file("config")).required(false))
+        .add_source(File::with_name("chrysopoeia").required(false))
+        .build()?
+        .try_deserialize::<Settings>()
+}