add: rewriter logic and tests

Cargo.lock

@@ -61,12 +61,6 @@ dependencies = [
  "windows-sys",
 ]
 
-[[package]]
-name = "anyhow"
-version = "1.0.97"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcfed56ad506cb2c684a14971b8861fdc3baaaae314b9e5f9bb532cbe3ba7a4f"
-
 [[package]]
 name = "clap"
 version = "4.5.34"
@@ -390,7 +384,6 @@ dependencies = [
 name = "skubelb"
 version = "0.1.0"
 dependencies = [
- "anyhow",
  "clap",
  "dir-diff",
  "env_logger",

Cargo.toml

@@ -4,7 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-anyhow = "1.0.97"
 clap = { version = "4.5.34", features = ["derive"] }
 dir-diff = "0.3.3"
 env_logger = "0.11.7"

src/main.rs

@@ -12,19 +12,13 @@ use rewriter::Rewriter;
 #[derive(Parser, Debug)]
 #[command(version, about, long_about = None)]
 struct Args {
-    /// The needle that will be replaced. Anytime a line
+    /// Name of the person to greet
-    /// is encountered with this needle, the line is dropped
-    /// and instead N lines (one per replacement) is added to
-    /// the output.
     #[arg(short, long)]
     rewrite_string: String,
 
-    /// The folder which contains the templates that
-    /// will be be searched for the needle.
     #[arg(short, long)]
     source_folder: String,
 
-    /// Where to write the replaced lines.
     #[arg(short, long)]
     dest_folder: String,
 }

src/rewriter.rs

@@ -1,9 +1,8 @@
-use anyhow::Result;
 use std::collections::HashSet;
 use std::path::Path;
 use std::{
     fs::{self, File},
-    io::{BufReader, prelude::*},
+    io::{self, BufReader, prelude::*},
 };
 
 pub struct Rewriter {
@@ -27,7 +26,7 @@ impl Rewriter {
         self.replacements.remove(replacement);
     }
 
-    pub fn rewrite_folder(&self, src: &str, dst: &str) -> Result<()> {
+    pub fn rewrite_folder(&self, src: &str, dst: &str) -> Result<(), io::Error> {
         // Make sure we are deterministic; construct a list of strings and sort
         // them
         let mut replacements: Vec<String> = self.replacements.iter().map(|s| s.clone()).collect();
@@ -44,7 +43,7 @@ impl Rewriter {
                 // First, calculate the 'relative' path after we trim the
                 // the src prefix, then join that with the dst prefix
                 let src_path = entry.path();
-                let src_part_path = src_path.strip_prefix(&src)?;
+                let src_part_path = src_path.strip_prefix(&src).unwrap();
                 let dst_path = dst_base.join(src_part_path);
 
                 if metadata.is_dir() {
@@ -97,7 +96,9 @@ mod tests {
     #[test]
     fn basic_test() {
         let testdata = TempDir::new("").unwrap();
-        TEST_FILES.extract(testdata.path()).unwrap();
+        TEST_FILES
+            .extract(testdata.path())
+            .unwrap();
         let src = testdata.path().join("testsrc");
         let dst = TempDir::new("").unwrap();
 
@@ -114,8 +115,6 @@ mod tests {
             .unwrap();
 
         // Validate that everything matches
-        assert!(
+        assert!(dir_diff::is_different(testdata.path().join("testdst"), dst.path()).unwrap() == false);
-            dir_diff::is_different(testdata.path().join("testdst"), dst.path()).unwrap() == false
-        );
     }
 }