feat: support empty file (/dev/null) (#1)

* feat: support empty file (/dev/null)

Signed-off-by: thefool0 <74161809+thefool0000@users.noreply.github.com>

* deps: remove cscopy

Signed-off-by: jingfelix <jingfelix@outlook.com>

* fix: remove redundant deps in requirements.txt

Signed-off-by: jingfelix <jingfelix@outlook.com>

---------

Signed-off-by: thefool0 <74161809+thefool0000@users.noreply.github.com>
Signed-off-by: jingfelix <jingfelix@outlook.com>
Co-authored-by: jingfelix <jingfelix@outlook.com>

.pre-commit-config.yaml

@@ -18,7 +18,7 @@ repos:
     hooks:
     -   id: black
 -   repo: https://github.com/pdm-project/pdm
-    rev: 2.17.3
+    rev: 2.22.0
     hooks:
     -   id: pdm-export
         args: ['-o', 'requirements.txt', '--without-hashes']

pyproject.toml

@@ -9,7 +9,6 @@ dependencies = [
     "typer[all]>=0.9.0",
     "pydantic>=2.5.3",
     "pydantic-settings>=2.2.1",
-    "cscopy>=0.0.1",
     "whatthepatch-pydantic==1.0.6a2",
 ]
 requires-python = ">=3.10"

requirements.txt

@@ -4,19 +4,17 @@
 annotated-types==0.7.0
 click==8.1.7
 colorama==0.4.6; platform_system == "Windows"
-cscopy==0.0.1
 markdown-it-py==3.0.0
 mdurl==0.1.2
-objprint==0.2.3
-pydantic==2.8.2
-pydantic-core==2.20.1
-pydantic-settings==2.4.0
+objprint==0.3.0
+pydantic==2.10.3
+pydantic-core==2.27.1
+pydantic-settings==2.7.0
 pygments==2.18.0
 python-dotenv==1.0.1
-rich==13.7.1
+rich==13.9.4
 shellingham==1.5.4
-typer==0.12.3
-typer[all]==0.12.3
+typer[all]==0.15.1
 typing-extensions==4.12.2
-viztracer==0.16.3
+viztracer==1.0.0
 whatthepatch-pydantic==1.0.6a2

src/Patche/commands/apply.py

@@ -37,29 +37,58 @@ def apply(
             old_filename = diff.header.old_path
             new_filename = diff.header.new_path
 
-            if os.path.exists(old_filename):
+            logger.debug(f"old_filename: {old_filename} new_filename: {new_filename}")
 
-                logger.info(f"Applying patch to {old_filename}...")
+            if old_filename == "/dev/null":
+                # 根据 diffes 创建新文件
+                try:
+                    assert len(diff.hunks) == 1
 
-                new_line_list = File(file_path=old_filename).line_list
-                apply_result = apply_change(
-                    diff.hunks, new_line_list, reverse=reverse, fuzz=fuzz
-                )
-                new_line_list = apply_result.new_line_list
+                    new_line_list = []
+                    for line in diff.changes:
 
-                # 检查失败数
-                for failed_hunk in apply_result.failed_hunk_list:
-                    has_failed = True
-                    logger.error(f"Failed hunk: {failed_hunk.index}")
-            else:
-                logger.error(f"{old_filename} not found!")
-                raise typer.Exit(code=1)
-
-            # 写入文件
-            if not has_failed:
-                with open(new_filename, mode="w+", encoding="utf-8") as f:
-                    for line in new_line_list:
-                        if line.status:
+                        assert line.old is None
+                        new_line_list.append(line)
+
+                    with open(new_filename, mode="w+", encoding="utf-8") as f:
+                        for line in new_line_list:
                             f.write(line.content + "\n")
 
+                except AssertionError:
+                    logger.error("Failed to create new file: invalid diff!")
+                    raise typer.Exit(code=1)
+
+            elif new_filename == "/dev/null":
+                # 移除 old_filename
+                if os.path.exists(old_filename):
+                    os.remove(old_filename)
+                else:
+                    logger.error(f"{old_filename} not found!")
+                    raise typer.Exit(code=1)
+            else:
+                if os.path.exists(old_filename):
+
+                    logger.info(f"Applying patch to {old_filename}...")
+
+                    new_line_list = File(file_path=old_filename).line_list
+                    apply_result = apply_change(
+                        diff.hunks, new_line_list, reverse=reverse, fuzz=fuzz
+                    )
+                    new_line_list = apply_result.new_line_list
+
+                    # 检查失败数
+                    for failed_hunk in apply_result.failed_hunk_list:
+                        has_failed = True
+                        logger.error(f"Failed hunk: {failed_hunk.index}")
+                else:
+                    logger.error(f"{old_filename} not found!")
+                    raise typer.Exit(code=1)
+
+                # 写入文件
+                if not has_failed:
+                    with open(new_filename, mode="w+", encoding="utf-8") as f:
+                        for line in new_line_list:
+                            if line.status:
+                                f.write(line.content + "\n")
+
     raise typer.Exit(code=1 if has_failed else 0)