From 66a927eae8862de3a9566255705112bed27a95d9 Mon Sep 17 00:00:00 2001
From: Emily Boudreaux <thomas@boudreauxmail.com>
Date: Fri, 12 Dec 2025 11:58:49 -0500
Subject: [PATCH] feat(cps): initial commit

---
 .gitignore  |   1 +
 Cargo.lock  | 313 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |  10 ++
 src/main.rs | 118 ++++++++++++++++++++
 4 files changed, 442 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

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..86f1c0d
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,313 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
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+version = "1.1.4"
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+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "anstream"
+version = "0.6.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
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+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
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+ "serde",
+]
+
+[[package]]
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+checksum = "c9e340e012a1bf4935f5282ed1436d1489548e8f72308207ea5df0e23d2d03f8"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
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+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
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+checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
+
+[[package]]
+name = "cps"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "clap",
+ "globset",
+ "walkdir",
+]
+
+[[package]]
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+checksum = "52dfc19153a48bde0cbd630453615c8151bce3a5adfac7a0aebfbf0a1e1f57e3"
+dependencies = [
+ "aho-corasick",
+ "bstr",
+ "log",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "heck"
+version = "0.5.0"
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+ "proc-macro2",
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+dependencies = [
+ "windows-link",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..3cdae52
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "cps"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+anyhow = "1.0.100"
+clap = { version = "4.5.53", features = ["derive"] }
+globset = "0.4.18"
+walkdir = "2.5.0"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..7ada9b0
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,118 @@
+use anyhow::{Context, Result};
+use clap::Parser;
+use globset::{Glob, GlobSet, GlobSetBuilder};
+use std::fs;
+use std::path::{Path, PathBuf};
+use walkdir::WalkDir;
+
+#[derive(Parser, Debug)]
+#[command(name = "cps")]
+#[command(about = "Recursively copy directory structures and specific files based on patterns.")]
+#[command(version, long_about = None)]
+struct Cli {
+    #[arg(value_name = "SOURCE")]
+    source: PathBuf,
+
+    #[arg(value_name = "DEST")]
+    dest: PathBuf,
+
+    #[arg(short, long)]
+    recursive: bool,
+
+    #[arg(short = 'e', long = "extension", value_name = "PATTERN")]
+    patterns: Vec<String>,
+
+    #[arg(short = 'd', long = "no-empty-dir", visible_alias = "prune")]
+    prune: bool,
+
+    #[arg(long)]
+    dry_run: bool,
+
+    #[arg(short, long)]
+    verbose: bool,
+}
+
+fn main() -> Result<()> {
+    let cli = Cli::parse();
+
+    if !cli.source.exists() {
+        anyhow::bail!("Source path does not exist: {:?}", cli.source);
+    }
+
+    let mut builder = GlobSetBuilder::new();
+    if !cli.patterns.is_empty() {
+        for pattern in &cli.patterns {
+            builder.add(Glob::new(pattern).context("Failed to compile glob pattern")?);
+        }
+    }
+    let glob_set = builder.build().context("Failed to build glob set")?;
+    let has_patterns = !cli.patterns.is_empty();
+
+    let max_depth = if cli.recursive { usize::MAX } else { 1 };
+    
+    let walker = WalkDir::new(&cli.source)
+        .max_depth(max_depth)
+        .follow_links(false) 
+        .into_iter();
+
+    for entry in walker.filter_map(|e| e.ok()) {
+        let path = entry.path();
+        
+        if path == cli.source {
+            continue;
+        }
+
+        let relative_path = path.strip_prefix(&cli.source)?;
+        let target_path = cli.dest.join(relative_path);
+
+        if path.is_dir() {
+            if !cli.prune {
+                create_dir(&target_path, cli.dry_run, cli.verbose)?;
+            }
+        } else if path.is_file() {
+            if has_patterns {
+                let filename = match path.file_name() {
+                    Some(n) => n,
+                    None => continue,
+                };
+
+                if glob_set.is_match(filename) {
+                    if cli.prune {
+                        if let Some(parent) = target_path.parent() {
+                            create_dir(parent, cli.dry_run, cli.verbose)?;
+                        }
+                    }
+
+                    copy_file(path, &target_path, cli.dry_run, cli.verbose)?;
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+fn create_dir(path: &Path, dry_run: bool, verbose: bool) -> Result<()> {
+    if !path.exists() {
+        if verbose {
+            println!("mkdir: {:?}", path);
+        }
+        if !dry_run {
+            fs::create_dir_all(path).context(format!("Failed to create dir {:?}", path))?;
+        }
+    }
+    Ok(())
+}
+
+fn copy_file(src: &Path, dest: &Path, dry_run: bool, verbose: bool) -> Result<()> {
+    if verbose {
+        println!("copy: {:?} -> {:?}", src, dest);
+    }
+    if !dry_run {
+        if let Some(parent) = dest.parent() {
+            fs::create_dir_all(parent)?;
+        }
+        fs::copy(src, dest).context(format!("Failed to copy file {:?}", src))?;
+    }
+    Ok(())
+}