refactor: update filter plugins to use boxed reader/writer parameters

Co-authored-by: aider (openai/andrew/openrouter/sonoma-sky-alpha) <aider@aider.chat>

src/filter_plugin/grep.rs

@@ -70,12 +70,12 @@ impl GrepFilter {
 /// filter.filter(&mut input, &mut output)?;
 /// ```
 impl FilterPlugin for GrepFilter {
-    fn filter(&mut self, reader: &mut dyn Read, writer: &mut dyn Write) -> Result<()> {
-        let mut buf_reader = std::io::BufReader::new(reader);
+    fn filter(&mut self, reader: Box<&mut dyn Read>, writer: Box<&mut dyn Write>) -> Result<()> {
+        let mut buf_reader = std::io::BufReader::new(reader.as_mut());
         for line in buf_reader.by_ref().lines() {
             let line = line?;
             if self.regex.is_match(&line) {
-                writeln!(writer, "{}", line)?;
+                writeln!(writer.as_mut(), "{}", line)?;
             }
         }
         Ok(())

src/filter_plugin/head.rs

@@ -72,7 +72,7 @@ impl HeadBytesFilter {
 /// // Input "Hello World" becomes "Hello"
 /// ```
 impl FilterPlugin for HeadBytesFilter {
-    fn filter(&mut self, reader: &mut dyn Read, writer: &mut dyn Write) -> Result<()> {
+    fn filter(&mut self, reader: Box<&mut dyn Read>, writer: Box<&mut dyn Write>) -> Result<()> {
         if self.remaining == 0 {
             return Ok(());
         }
@@ -80,11 +80,11 @@ impl FilterPlugin for HeadBytesFilter {
         let mut buffer = vec![0; PIPESIZE];
         while self.remaining > 0 {
             let to_read = std::cmp::min(self.remaining, PIPESIZE);
-            let bytes_read = reader.read(&mut buffer[..to_read])?;
+            let bytes_read = reader.as_mut().read(&mut buffer[..to_read])?;
             if bytes_read == 0 {
                 break;
             }
-            writer.write_all(&buffer[..bytes_read])?;
+            writer.as_mut().write_all(&buffer[..bytes_read])?;
             self.remaining -= bytes_read;
         }
         Ok(())
@@ -182,15 +182,15 @@ impl HeadLinesFilter {
 /// // Input "Line1\nLine2\nLine3" becomes "Line1\nLine2\n"
 /// ```
 impl FilterPlugin for HeadLinesFilter {
-    fn filter(&mut self, reader: &mut dyn Read, writer: &mut dyn Write) -> Result<()> {
+    fn filter(&mut self, reader: Box<&mut dyn Read>, writer: Box<&mut dyn Write>) -> Result<()> {
         if self.remaining == 0 {
             return Ok(());
         }
         
-        let mut buf_reader = std::io::BufReader::new(reader);
+        let mut buf_reader = std::io::BufReader::new(reader.as_mut());
         for line in buf_reader.by_ref().lines() {
             let line = line?;
-            writeln!(writer, "{}", line)?;
+            writeln!(writer.as_mut(), "{}", line)?;
             self.remaining -= 1;
             if self.remaining == 0 {
                 break;

src/services/compression_service.rs

@@ -5,7 +5,9 @@ use std::path::PathBuf;
 use std::str::FromStr;
 use anyhow::anyhow;
 
-//// Service for handling compression and decompression of item content.
+pub struct CompressionService;
+
+/// Service for handling compression and decompression of item content.
 ///
 /// Provides methods to read compressed item files either fully into memory
 /// or as streaming readers. Supports various compression types via engines.
@@ -17,19 +19,6 @@ use anyhow::anyhow;
 /// let service = CompressionService::new();
 /// let content = service.get_item_content(path, "gzip")?;
 /// ```
-pub struct CompressionService;
-
-/// Service for handling compression and decompression of item content.
-///
-/// Provides methods to read compressed item files either fully into memory
-/// or as streaming readers. Supports various compression types via engines.
-///
-/// # Examples
-///
-pub struct CompressionService;
-
-/// Service for handling compression and decompression of item content.
-///
 /// Provides methods to read compressed item files either fully into memory
 /// or as streaming readers. Supports various compression types via engines.
 ///