chore: refactor into lib

src/lib.rs

@@ -0,0 +1,5 @@
+mod root;
+mod shell;
+
+pub use root::SrcRoot;
+pub use shell::setup_shell;

src/main.rs

@@ -1,153 +1,64 @@
 use std::{
     env::{current_dir, home_dir, var},
-    ffi::{OsStr, OsString},
-    fs::create_dir_all,
-    path::{Path, PathBuf},
-    process::Command,
+    path::PathBuf,
 };
 
-use anyhow::{Context, Result};
-use clap::{Parser, Subcommand};
-use url::Url;
-use walkdir::WalkDir;
+use anyhow::Result;
+use clap::Parser;
+use repo_rs::{SrcRoot, setup_shell};
 
-const MAX_DEPTH: usize = 5;
+mod cli {
+    use std::path::PathBuf;
 
-fn setup_shell(code_root: &Path) {
-    println!(
-        r#"
-h() {{
-  _h_dir=$(command repo resolve --root "{}" "$@")
-  _h_ret=$?
-  [ "$_h_dir" != "$PWD" ] && pushd "$_h_dir"
-  return $_h_ret
-}}
-"#,
-        code_root.display()
-    );
-}
+    use clap::{Parser, Subcommand};
 
-struct SrcRoot<T: AsRef<Path> + AsRef<OsStr>> {
-    root_path: T,
-}
-
-impl<T: AsRef<Path> + AsRef<OsStr>> SrcRoot<T> {
-    fn clone_repo(url: &Url, destination: &Path) -> Result<()> {
-        let url = OsString::from(url.as_ref());
-        Command::new("git")
-            .args([
-                OsString::from("clone").as_os_str(),
-                url.as_os_str(),
-                destination.as_os_str(),
-            ])
-            .status()?;
-        Ok(())
+    #[derive(Parser)]
+    #[command(version, about, long_about = None)]
+    #[command(propagate_version = true)]
+    pub(crate) struct Cli {
+        #[command(subcommand)]
+        pub(crate) command: Commands,
     }
 
-    fn as_repo_path(&self, url: &Url) -> PathBuf {
-        let mut dir = PathBuf::new();
-        dir.push::<&Path>(self.root_path.as_ref());
-        dir.push(url.host_str().unwrap_or("misc"));
-        url.path_segments()
-            .into_iter()
-            .flatten()
-            .filter(|s| !s.is_empty())
-            .for_each(|s| dir.push(s.trim_end_matches(".git")));
-        dir
-    }
-
-    fn ensure_repo_checkout(&self, url: &Url) -> Result<PathBuf> {
-        let repo_path = self.as_repo_path(url);
-        if !repo_path.is_dir() {
-            create_dir_all(&repo_path)?;
-        }
-        Self::clone_repo(url, &repo_path)?;
-        Ok(repo_path)
-    }
-
-    fn search_repo<S: AsRef<OsStr>>(&self, slug: S) -> Result<Option<PathBuf>> {
-        let walker = WalkDir::new(&self.root_path)
-            .follow_links(false)
-            .max_depth(MAX_DEPTH)
-            .follow_root_links(false)
-            .max_open(1)
-            .sort_by_file_name()
-            .contents_first(false)
-            .same_file_system(true);
-        for path in walker {
-            let p = path?;
-            let git = {
-                let mut g = p.clone().into_path();
-                g.push(".git");
-                g
-            };
-            if let Some(file_name) = p.path().file_name() {
-                if file_name == slug.as_ref() && git.is_dir() {
-                    return Ok(Some(p.into_path()));
-                }
-            }
-        }
-        Ok(None)
-    }
-
-    fn new(path: T) -> Self {
-        Self { root_path: path }
+    #[derive(Subcommand)]
+    pub(crate) enum Commands {
+        Resolve {
+            #[arg(long)]
+            root: Option<PathBuf>,
+            repo: String,
+        },
+        Setup {
+            #[arg(long)]
+            root: Option<PathBuf>,
+        },
     }
 }
 
-fn src_root() -> Result<PathBuf> {
-    if let Ok(src_root) = var("REPO_CODE_ROOT").map(PathBuf::from) {
-        Ok(src_root)
+fn resolve_root(root: Option<PathBuf>) -> Result<PathBuf> {
+    let path_buf = if let Some(root) = root {
+        root
+    } else if let Ok(src_root) = var("REPO_CODE_ROOT").map(PathBuf::from) {
+        src_root
     } else {
         let mut src_root = home_dir().unwrap_or(current_dir()?);
         src_root.push("code");
-        Ok(src_root)
-    }
-}
-
-fn resolve_repo(arg: String, src_root: PathBuf) -> Result<(), anyhow::Error> {
-    let src_root = SrcRoot::new(src_root);
-    let path = if let Ok(url) = Url::parse(&arg) {
-        src_root.ensure_repo_checkout(&url)
-    } else {
-        let slug: OsString = arg.into();
-        src_root.search_repo(slug)?.context("Repo not found")
-    }?;
-    println!("{}", path.display());
-    Ok(())
-}
-
-#[derive(Parser)]
-#[command(version, about, long_about = None)]
-#[command(propagate_version = true)]
-struct Cli {
-    #[command(subcommand)]
-    command: Commands,
-}
-
-#[derive(Subcommand)]
-enum Commands {
-    Resolve {
-        #[arg(long)]
-        root: Option<PathBuf>,
-        repo: String,
-    },
-    Setup {
-        #[arg(long)]
-        root: Option<PathBuf>,
-    },
+        src_root
+    };
+    Ok(path_buf)
 }
 
 fn main() -> Result<()> {
+    use crate::cli::{Cli, Commands};
+
     let cli = Cli::parse();
 
     match cli.command {
         Commands::Resolve { root, repo } => {
-            let root = root.context("").or_else(|_e| src_root())?;
-            resolve_repo(repo, root)?;
+            let root = SrcRoot::new(resolve_root(root)?);
+            println!("{}", root.resolve_repo(repo)?.as_ref().display());
         }
         Commands::Setup { root } => {
-            let root = root.context("").or_else(|_e| src_root())?;
+            let root = resolve_root(root)?;
             setup_shell(&root);
         }
     }

src/root.rs

@@ -0,0 +1,91 @@
+use anyhow::{Context, Result};
+use std::{
+    ffi::{OsStr, OsString},
+    fs::create_dir_all,
+    path::{Path, PathBuf},
+    process::Command,
+};
+use url::Url;
+use walkdir::WalkDir;
+
+const MAX_DEPTH: usize = 5;
+
+pub struct SrcRoot {
+    root_path: PathBuf,
+}
+
+impl SrcRoot {
+    fn clone_repo(url: &Url, destination: &Path) -> Result<()> {
+        let url = OsString::from(url.as_ref());
+        Command::new("git")
+            .args([
+                OsString::from("clone").as_os_str(),
+                url.as_os_str(),
+                destination.as_os_str(),
+            ])
+            .status()?;
+        Ok(())
+    }
+
+    fn as_repo_path(&self, url: &Url) -> PathBuf {
+        let mut dir = PathBuf::new();
+        dir.push::<&Path>(self.root_path.as_ref());
+        dir.push(url.host_str().unwrap_or("misc"));
+        url.path_segments()
+            .into_iter()
+            .flatten()
+            .filter(|s| !s.is_empty())
+            .for_each(|s| dir.push(s.trim_end_matches(".git")));
+        dir
+    }
+
+    fn ensure_repo_checkout(&self, url: &Url) -> Result<PathBuf> {
+        let repo_path = self.as_repo_path(url);
+        if !repo_path.is_dir() {
+            create_dir_all(&repo_path)?;
+        }
+        Self::clone_repo(url, &repo_path)?;
+        Ok(repo_path)
+    }
+
+    fn search_repo<S: AsRef<OsStr>>(&self, slug: S) -> Result<Option<PathBuf>> {
+        let walker = WalkDir::new(&self.root_path)
+            .follow_links(false)
+            .max_depth(MAX_DEPTH)
+            .follow_root_links(false)
+            .max_open(1)
+            .sort_by_file_name()
+            .contents_first(false)
+            .same_file_system(true);
+        for path in walker {
+            let p = path?;
+            let git = {
+                let mut g = p.clone().into_path();
+                g.push(".git");
+                g
+            };
+            if let Some(file_name) = p.path().file_name() {
+                if file_name == slug.as_ref() && git.is_dir() {
+                    return Ok(Some(p.into_path()));
+                }
+            }
+        }
+        Ok(None)
+    }
+
+    /// # Errors
+    /// File system errors
+    pub fn resolve_repo(&self, arg: String) -> Result<impl AsRef<Path>> {
+        if let Ok(url) = Url::parse(&arg) {
+            self.ensure_repo_checkout(&url)
+        } else {
+            let slug: OsString = arg.into();
+            self.search_repo(slug)?.context("Repo not found")
+        }
+    }
+
+    #[must_use]
+    pub fn new(path: PathBuf) -> Self {
+        Self { root_path: path }
+    }
+}

src/shell.rs

@@ -0,0 +1,15 @@
+use std::path::Path;
+
+pub fn setup_shell(code_root: &Path) {
+    println!(
+        r#"
+h() {{
+  _h_dir=$(command repo resolve --root "{}" "$@")
+  _h_ret=$?
+  [ "$_h_dir" != "$PWD" ] && pushd "$_h_dir"
+  return $_h_ret
+}}
+"#,
+        code_root.display()
+    );
+}