refactor: remove is_default from meta plugins and add read_time/read_rate plugins

Co-authored-by: aider (openai/andrew.openrouter.qwen.qwen3-coder) <aider@aider.chat>

src/meta_plugin.rs

@@ -21,6 +21,8 @@ pub enum MetaPluginType {
     FileMagic,
     DigestSha256,
     DigestMd5,
+    ReadTime,
+    ReadRate,
 }
 
 pub trait MetaPlugin {
@@ -34,10 +36,6 @@ pub trait MetaPlugin {
     fn update(&mut self, data: &[u8]);
 
     fn meta_name(&mut self) -> String;
-
-    fn is_default(&self) -> bool {
-        false
-    }
 }
 
 use std::io::Write;
@@ -48,9 +46,12 @@ lazy_static! {
             let program = MetaPluginProgram::new("file", vec!["-bE", "-"], "file_magic".to_string(), true);
             if program.supported { Some(program) } else { None }
         }
-        MetaPluginType::DigestSha256 => None,
+        MetaPluginType::DigestSha256 => {
+            let program = MetaPluginProgram::new("sha256sum", vec![], "digest_sha256".to_string(), true);
+            if program.supported { Some(program) } else { None }
+        }
         MetaPluginType::DigestMd5 => {
-            let program = MetaPluginProgram::new("md5sum", vec![], "digest_md5".to_string(), false);
+            let program = MetaPluginProgram::new("md5sum", vec![], "digest_md5".to_string(), true);
             if program.supported { Some(program) } else { None }
         }
     };
@@ -60,7 +61,9 @@ pub fn get_meta_plugin(meta_plugin_type: MetaPluginType) -> Box<dyn MetaPlugin>
     match meta_plugin_type {
         MetaPluginType::FileMagic => Box::new(MetaPluginProgram::new("file", vec!["-bE", "-"], "file_magic".to_string(), true)),
         MetaPluginType::DigestSha256 => Box::new(DigestSha256MetaPlugin::new()),
-        MetaPluginType::DigestMd5 => Box::new(MetaPluginProgram::new("md5sum", vec![], "digest_md5".to_string(), false)),
+        MetaPluginType::DigestMd5 => Box::new(MetaPluginProgram::new("md5sum", vec![], "digest_md5".to_string(), true)),
+        MetaPluginType::ReadTime => Box::new(ReadTimeMetaPlugin::new()),
+        MetaPluginType::ReadRate => Box::new(ReadRateMetaPlugin::new()),
     }
 }
 

src/meta_plugin/digest.rs

@@ -40,9 +40,6 @@ impl MetaPlugin for DigestSha256MetaPlugin {
         self.meta_name.clone()
     }
 
-    fn is_default(&self) -> bool {
-        true
-    }
 }
 
 // Dummy writer that implements Write but doesn't do anything

src/meta_plugin/program.rs

@@ -16,12 +16,12 @@ pub struct MetaPluginProgram {
     pub args: Vec<String>,
     pub supported: bool,
     pub meta_name: String,
-    pub is_default: bool,
+    pub split_whitespace: bool,
     buffer: Vec<u8>,
 }
 
 impl MetaPluginProgram {
-    pub fn new(program: &str, args: Vec<&str>, meta_name: String, is_default: bool) -> MetaPluginProgram {
+    pub fn new(program: &str, args: Vec<&str>, meta_name: String, split_whitespace: bool) -> MetaPluginProgram {
         let program_path = get_program_path(program);
         let supported = program_path.is_ok();
 
@@ -30,7 +30,7 @@ impl MetaPluginProgram {
             args: args.iter().map(|s| s.to_string()).collect(),
             supported,
             meta_name,
-            is_default,
+            split_whitespace,
             buffer: Vec::new(),
         }
     }
@@ -90,8 +90,8 @@ impl MetaPlugin for MetaPluginProgram {
             let stdout = String::from_utf8_lossy(&output.stdout);
             let trimmed_result = stdout.trim();
             
-            // For certain programs like md5sum, we only want the first part before whitespace
-            if self.program.ends_with("sum") {
+            // For certain programs, we only want the first part before whitespace
+            if self.split_whitespace {
                 let parts: Vec<&str> = trimmed_result.split_whitespace().collect();
                 if !parts.is_empty() {
                     Ok(parts[0].to_string())
@@ -118,9 +118,6 @@ impl MetaPlugin for MetaPluginProgram {
         self.meta_name.clone()
     }
 
-    fn is_default(&self) -> bool {
-        self.is_default
-    }
 }
 
 fn get_program_path(program: &str) -> Result<String> {