feat: add binary detection and word/line count helper methods

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

src/meta_plugin/text.rs

@@ -227,6 +227,66 @@ impl MetaPlugin for TextMetaPlugin {
         }
     }
 
+    /// Helper method to perform binary detection and return appropriate metadata
+    /// Returns (metadata, should_finalize) tuple
+    fn perform_binary_detection(&mut self, buffer: &[u8]) -> (Vec<crate::meta_plugin::MetaData>, bool) {
+        let mut metadata = Vec::new();
+        let is_binary_result = is_binary(buffer);
+        self.is_binary_content = Some(is_binary_result);
+        
+        // Output text and binary status
+        let text_value = if is_binary_result { "false".to_string() } else { "true".to_string() };
+        let binary_value = if is_binary_result { "true".to_string() } else { "false".to_string() };
+        
+        // Use process_metadata_outputs to handle output mapping
+        if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
+            "text", 
+            text_value, 
+            self.base.outputs()
+        ) {
+            metadata.push(meta_data);
+        }
+        
+        if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
+            "binary", 
+            binary_value, 
+            self.base.outputs()
+        ) {
+            metadata.push(meta_data);
+        }
+        
+        (metadata, is_binary_result)
+    }
+    
+    /// Helper method to output word and line counts
+    fn output_word_line_counts(&mut self) -> Vec<crate::meta_plugin::MetaData> {
+        let mut metadata = Vec::new();
+        
+        // Process any remaining data in utf8_buffer
+        if !self.utf8_buffer.is_empty() {
+            self.count_text_stats(&[]);
+        }
+        
+        // Output word and line counts
+        if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
+            "text_word_count", 
+            self.word_count.to_string(), 
+            self.base.outputs()
+        ) {
+            metadata.push(meta_data);
+        }
+        
+        if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
+            "text_line_count", 
+            self.line_count.to_string(), 
+            self.base.outputs()
+        ) {
+            metadata.push(meta_data);
+        }
+        
+        metadata
+    }
+
     fn meta_name(&self) -> String {
         self.base.meta_name.clone()
     }