改进 diff 解析与应用逻辑，清理路径并增强文件处理准确性
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75fc8659a0
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@ -3,6 +3,14 @@ import os
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from typing import List, Dict, Any
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from unidiff import PatchSet, Hunk # 需要安装 unidiff2
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def _clean_path(path: str) -> str:
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"""清理路径，移除 a/ 或 b/ 前缀。"""
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if path.startswith('a/'):
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return path[2:]
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if path.startswith('b/'):
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return path[2:]
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return path
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def parse_diff(diff: str) -> List[str]:
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"""
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解析 unified diff 字符串，提取受影响的文件路径。
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@ -16,11 +24,14 @@ def parse_diff(diff: str) -> List[str]:
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"""
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try:
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patch_set = PatchSet(diff)
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# unidiff2 中的 patch 对象有一个 path 属性，代表修改的文件
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# 使用集合去重
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files = {patch.target_file for patch in patch_set} # 使用target_file获取修改后的文件名
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# 过滤掉 /dev/null
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return [f.lstrip('/') for f in files if f != '/dev/null' and not f.endswith('/dev/null')]
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# unidiff2 中的 patch 对象有 source_file 和 target_file
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# 我们关心的是目标文件，即修改后/创建的文件
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files = set()
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for patch in patch_set:
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if patch.target_file and patch.target_file != '/dev/null':
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cleaned_path = _clean_path(patch.target_file)
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files.add(cleaned_path)
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return list(files)
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except Exception as e:
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# 如果解析失败，抛出异常
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raise e
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@ -46,29 +57,29 @@ def _apply_single_patch_to_content(file_content_lines: List[str], patch_hunks: L
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source_len = hunk.source_length
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# 验证源文件内容是否与diff中的源行匹配 (这是一个简化的验证)
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source_lines_from_diff = [str(l).strip() for l in hunk.source_lines()] # strip()去除行首的'-'或' '
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actual_source_lines = current_lines[source_start : source_start + source_len]
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# source_lines() 包含了删除行(-)和上下文行( )
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source_lines_from_diff = []
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for line in hunk.source_lines():
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# unidiff2的line对象转字符串会带有 +/-/ 等符号，需要strip掉
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source_lines_from_diff.append(str(line).strip())
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# 提取实际源行和上下文/删除行进行比较，rstrip换行符
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actual_source_lines = current_lines[source_start : source_start + source_len]
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actual_source_for_comparison = [line.rstrip('\n\r') for line in actual_source_lines]
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if source_lines_from_diff != actual_source_for_comparison:
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raise ValueError(f"Hunk at line {hunk.source_start} does not match the source file content. Expected: {source_lines_from_diff}, Got: {actual_source_for_comparison}")
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# 构建新的内容部分
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# 构建新的内容部分 (target lines)
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# target_lines() 包含了新增行(+)和上下文行( )
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new_part = []
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for line_obj in hunk:
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if line_obj.is_added or line_obj.is_context:
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# 添加新增行或上下文行
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# unidiff2的line对象转字符串会带有 +/-/ 等符号，我们需要获取实际内容
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# line.value 包含符号，line.text 不包含符号，但可能不准确
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# 最可靠的方法是 strip() 掉行首的 +/-/ 空格
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for line_obj in hunk.target_lines():
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# 获取实际内容，strip掉符号，并保持原有的换行符风格
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clean_line = str(line_obj).strip()
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# 如果原文件行尾有换行符，我们也要加上
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original_trailing = ""
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# 如果原文件有换行符，则恢复它
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if current_lines and current_lines[0].endswith('\n'):
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original_trailing = "\n"
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else:
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original_trailing = ""
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new_part.append(clean_line + original_trailing)
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# 替换原内容
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@ -111,7 +122,11 @@ def apply_diff(diff: str, target_dir: str = ".") -> Dict[str, Any]:
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try:
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patch_set = PatchSet(diff)
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# 收集所有需要修改的目标文件路径
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affected_files = [p.target_file.lstrip('/') for p in patch_set if p.target_file != '/dev/null']
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affected_files = []
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for patch in patch_set:
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if patch.target_file and patch.target_file != '/dev/null':
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cleaned_path = _clean_path(patch.target_file)
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affected_files.append(cleaned_path)
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except Exception as e:
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result['message'] = f"Failed to parse diff: {str(e)}"
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result['error_details'] = str(e)
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@ -126,15 +141,15 @@ def apply_diff(diff: str, target_dir: str = ".") -> Dict[str, Any]:
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# 遍历每个 patch (即每个文件的变更)
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for patch_obj in patch_set:
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# 获取目标文件路径 (修改后的文件名)
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target_path = patch_obj.target_file.lstrip('/')
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target_path = _clean_path(patch_obj.target_file)
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if not target_path or target_path == '/dev/null':
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# 如果目标是 /dev/null，则是删除操作，我们跳过或记录
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# 如果目标是 /dev/null，则是删除操作，我们跳过
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continue
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full_file_path = os.path.join(target_dir, target_path)
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# 检查源文件是否存在 (对于新增操作，源文件可能是 /dev/null)
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source_path = patch_obj.source_file
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source_path = _clean_path(patch_obj.source_file)
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if source_path == '/dev/null':
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# 源是 /dev/null，说明这是一个新文件，内容从空开始
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original_content_lines = []
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@ -144,9 +159,7 @@ def apply_diff(diff: str, target_dir: str = ".") -> Dict[str, Any]:
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with open(full_file_path, 'r', encoding='utf-8') as f:
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original_content_lines = f.readlines()
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except FileNotFoundError:
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# 如果文件不存在，但diff不是新文件，这可能是个错误
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# 但对于新文件，这种情况也可能发生，因为路径可能不同
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# 我们继续，但要注意如果内容不匹配会报错
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# 如果文件不存在，但diff期望它存在，这会导致冲突
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original_content_lines = []
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# 应用此文件的补丁 (所有 hunks)
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