from pathlib import Path
<p>def build_file_index(root_path):
index = []
root = Path(root_path)
for file_path in root.rglob("*"):
if file_path.is_file():
stat = file_path.stat()
index.append({
"path": str(file_path),
"name": file_path.name,
"suffix": file_path.suffix,
"size": stat.st_size,
"mtime": stat.st_mtime
})
return index</p>

def search_by_name(index, keyword, case_sensitive=False):
    results = []
    for item in index:
        name_without_ext = Path(item["path"]).stem
        target_name = name_without_ext if not case_sensitive else item["name"]
        query = keyword.lower() if not case_sensitive else keyword
        if query in target_name.lower():
            results.append(item)
    return results

def search_in_content(index, keyword, encoding='utf-8'):
    results = []
    for item in index:
        try:
            with open(item["path"], 'r', encoding=encoding) as f:
                for line_num, line in enumerate(f, 1):
                    if keyword in line:
                        results.append({
                            "file": item,
                            "line": line_num,
                            "content": line.strip()
                        })
        except (UnicodeDecodeError, PermissionError):
            continue  # 跳过二进制或不可读文件
    return results

from collections import defaultdict
<p>def build_name_index(index):
name_map = defaultdict(list)
for item in index:
name_map[item["name"]].append(item)
return name_map</p>