Add support for ugrep

README.md

@@ -23,8 +23,8 @@ This server integrates with the [Model Context Protocol](https://modelcontextpro
 ## Key Features
 
 - **Project Indexing**: Recursively scans directories to build a searchable index of code files
-- **Advanced Search**: Intelligent search with automatic detection of ripgrep, ag, or grep for enhanced performance
-- **Fuzzy Search**: Safe fuzzy matching with word boundaries for flexible code discovery
+- **Advanced Search**: Intelligent search with automatic detection of ugrep, ripgrep, ag, or grep for enhanced performance
+- **Fuzzy Search**: Native fuzzy matching with ugrep, or safe fuzzy patterns for other tools
 - **File Analysis**: Get detailed insights about file structure, imports, and complexity
 - **Smart Filtering**: Automatically ignores build directories, dependencies, and non-code files
 - **Persistent Storage**: Caches indexes for improved performance across sessions
@@ -113,7 +113,7 @@ After adding the configuration, restart Claude Desktop and the Code Index MCP to
 
 - **set_project_path**: Sets the base project path for indexing.
 - **search_code**: Basic search for code matches within the indexed files.
-- **search_code_advanced**: Enhanced search using external tools (ripgrep/ag/grep) with fuzzy matching support.
+- **search_code_advanced**: Enhanced search using external tools (ugrep/ripgrep/ag/grep) with fuzzy matching support.
 - **find_files**: Finds files in the project matching a given pattern.
 - **get_file_summary**: Gets a summary of a specific file, including line count, functions, imports, etc.
 - **refresh_index**: Refreshes the project index.
@@ -200,4 +200,4 @@ Contributions are welcome! Please feel free to submit a Pull Request.
 
 ## Languages
 
-- [繁體中文](README_zh.md)
+- [繁體中文](README_zh.md)

README_zh.md

@@ -19,8 +19,8 @@
 ## 主要特性
 
 - **專案索引**：遞迴掃描目錄以建構可搜尋的程式碼檔案索引
-- **進階搜尋**：智慧搜尋，自動偵測 ripgrep、ag 或 grep 以提升效能
-- **模糊搜尋**：使用詞邊界的安全模糊匹配，提供靈活的程式碼發現
+- **進階搜尋**：智慧搜尋，自動偵測 ugrep、ripgrep、ag 或 grep 以提升效能
+- **模糊搜尋**：ugrep 的原生模糊匹配功能提供卓越的搜尋結果，或其他工具的安全模糊模式
 - **檔案分析**：取得有關檔案結構、匯入和複雜性的詳細資訊
 - **智慧篩選**：自動忽略建構目錄、相依套件和非程式碼檔案
 - **持久儲存**：快取索引以提高跨工作階段的效能
@@ -109,7 +109,7 @@ python -m code_index_mcp
 
 - **set_project_path**：設定索引的基本專案路徑。
 - **search_code**：在已索引檔案中進行基本程式碼搜尋。
-- **search_code_advanced**：使用外部工具 (ripgrep/ag/grep) 的增強搜尋，支援模糊匹配。
+- **search_code_advanced**：使用外部工具 (ugrep/ripgrep/ag/grep) 的增強搜尋，支援模糊匹配。
 - **find_files**：尋找專案中符合給定模式的檔案。
 - **get_file_summary**：取得特定檔案的摘要，包括行數、函式、匯入等。
 - **refresh_index**：重新整理專案索引。

src/code_index_mcp/project_settings.py

@@ -511,8 +511,9 @@ def _detect_search_tools(self):
             'preferred_tool': 'basic'
         }
 
-        # Check tools in priority order: ripgrep > ag > grep
+        # Check tools in priority order: ugrep > ripgrep > ag > grep
         search_tools = [
+            ('ugrep', 'ug'),
             ('ripgrep', 'rg'),
             ('ag', 'ag'), 
             ('grep', 'grep')

src/code_index_mcp/server.py

@@ -748,7 +748,7 @@ def refresh_search_tools(ctx: Context) -> str:
     if preferred != 'basic':
         message += f"\nAdvanced search capabilities enabled with {preferred}."
     else:
-        message += "\nOnly basic search available. Consider installing ripgrep for better performance."
+        message += "\nOnly basic search available. Consider installing ugrep (recommended for fuzzy search), ripgrep, or ag for better performance."
 
     return message
 
@@ -924,11 +924,23 @@ def _execute_advanced_search(
     """
     # Prepare search pattern
     search_pattern = pattern
-    if fuzzy:
+    if fuzzy and tool != 'ugrep':  # ugrep has native fuzzy search
         search_pattern = _create_safe_fuzzy_pattern(pattern)
 
     # Build command based on tool
-    if tool == 'ripgrep':
+    if tool == 'ugrep':
+        if fuzzy:
+            cmd = ['ug', '--line-number', '--no-heading', '--fuzzy', '--ignore-files']  # Use native fuzzy search with gitignore
+        else:
+            cmd = ['ug', '--line-number', '--no-heading', '--fixed-strings', '--ignore-files']
+        if not case_sensitive:
+            cmd.append('--ignore-case')
+        if context_lines > 0:
+            cmd.extend(['-A', str(context_lines), '-B', str(context_lines)])
+        if file_pattern:
+            cmd.extend(['--include', file_pattern])
+
+    elif tool == 'ripgrep':
         if fuzzy:
             cmd = ['rg', '--line-number', '--no-heading']  # Use regex mode for fuzzy
         else:
@@ -939,7 +951,7 @@ def _execute_advanced_search(
             cmd.extend(['-A', str(context_lines), '-B', str(context_lines)])
         if file_pattern:
             cmd.extend(['--glob', file_pattern])
-            
+
     elif tool == 'ag':
         if fuzzy:
             cmd = ['ag', '--line-numbers', '--noheading']  # Use regex mode for fuzzy