Use PurePath.as_posix() when converting paths to string

Otherwise on Windows, thse get backwards slashes.

Signed-off-by: Carmen Bianca BAKKER <[email protected]>

src/reuse/_util.py

@@ -26,7 +26,7 @@
 from hashlib import sha1
 from itertools import chain
 from os import PathLike
-from pathlib import Path
+from pathlib import Path, PurePath
 from typing import IO, Any, BinaryIO, Dict, Iterator, List, Optional, Set, Union
 
 from boolean.boolean import Expression, ParseError
@@ -225,7 +225,8 @@ def _determine_license_suffix_path(path: StrPath) -> Path:
 
 def _copyright_from_dep5(path: StrPath, dep5_copyright: Copyright) -> ReuseInfo:
     """Find the reuse information of *path* in the dep5 Copyright object."""
-    result = dep5_copyright.find_files_paragraph(Path(path).as_posix())
+    path = PurePath(path).as_posix()
+    result = dep5_copyright.find_files_paragraph(path)
 
     if result is None:
         return ReuseInfo()
@@ -237,7 +238,7 @@ def _copyright_from_dep5(path: StrPath, dep5_copyright: Copyright) -> ReuseInfo:
         copyright_lines=set(
             map(str.strip, result.copyright.splitlines())  # type: ignore
         ),
-        path=str(path),
+        path=path,
         source_type=SourceType.DEP5,
         source_path=".reuse/dep5",
     )

src/reuse/project.py

@@ -206,8 +206,8 @@ def reuse_info_of(self, path: StrPath) -> List[ReuseInfo]:
                     else:
                         source_type = SourceType.FILE_HEADER
                     file_result = file_result.copy(
-                        path=str(self.relative_from_root(original_path)),
-                        source_path=str(self.relative_from_root(path)),
+                        path=self.relative_from_root(original_path).as_posix(),
+                        source_path=self.relative_from_root(path).as_posix(),
                         source_type=source_type,
                     )
 

src/reuse/report.py

@@ -15,7 +15,7 @@
 from hashlib import md5
 from io import StringIO
 from os import cpu_count
-from pathlib import Path
+from pathlib import Path, PurePath
 from typing import Any, Dict, Iterable, List, NamedTuple, Optional, Set, cast
 from uuid import uuid4
 
@@ -406,7 +406,7 @@ def to_dict_lint(self) -> Dict[str, Any]:
         return {
             # This gets rid of the './' prefix. In Python 3.9, use
             # str.removeprefix.
-            "path": str(Path(self.name)),
+            "path": PurePath(self.name).as_posix(),
             "copyrights": [
                 {
                     "value": line,