Mark generated files as regular files (#511)

Fixes #506.

3 files changed, 12 insertions, 7 deletions

diff --git a/docs/news.rst b/docs/news.rst
index 7b58034..4961729 100644
--- a/docs/news.rst
+++ b/docs/news.rst
@@ -5,6 +5,7 @@ Release Notes
 
 - Updated vendored ``packaging`` to 23.0
 - Fixed spaces in platform names not being converted to underscores (PR by David Tucker)
+- Fixed ``RECORD`` files in generated wheels missing the regular file attribute
 - Fixed ``DeprecationWarning`` about the use of the deprecated ``pkg_resources`` API
   (PR by Thomas Grainger)
 
diff --git a/src/wheel/wheelfile.py b/src/wheel/wheelfile.py
index 8ae9733..25129ce 100644
--- a/src/wheel/wheelfile.py
+++ b/src/wheel/wheelfile.py
@@ -153,6 +153,13 @@ class WheelFile(ZipFile):
         self.writestr(zinfo, data, compress_type)
 
     def writestr(self, zinfo_or_arcname, data, compress_type=None):
+        if isinstance(zinfo_or_arcname, str):
+            zinfo_or_arcname = ZipInfo(
+                zinfo_or_arcname, date_time=get_zipinfo_datetime()
+            )
+            zinfo_or_arcname.compress_type = self.compression
+            zinfo_or_arcname.external_attr = (0o664 | stat.S_IFREG) << 16
+
         if isinstance(data, str):
             data = data.encode("utf-8")
 
@@ -183,9 +190,6 @@ class WheelFile(ZipFile):
                 )
             )
             writer.writerow((format(self.record_path), "", ""))
-            zinfo = ZipInfo(self.record_path, date_time=get_zipinfo_datetime())
-            zinfo.compress_type = self.compression
-            zinfo.external_attr = 0o664 << 16
-            self.writestr(zinfo, data.getvalue())
+            self.writestr(self.record_path, data.getvalue())
 
         ZipFile.close(self)
diff --git a/tests/test_wheelfile.py b/tests/test_wheelfile.py
index ab286a6..b587821 100644
--- a/tests/test_wheelfile.py
+++ b/tests/test_wheelfile.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import stat
 import sys
 from zipfile import ZIP_DEFLATED, ZipFile
 
@@ -185,9 +186,8 @@ def test_attributes(tmp_path_factory, wheel_path):
     with ZipFile(wheel_path, "r") as zf:
         for filename, mode in files:
             info = zf.getinfo(filename)
-            assert info.external_attr == (mode | 0o100000) << 16
+            assert info.external_attr == (mode | stat.S_IFREG) << 16
             assert info.compress_type == ZIP_DEFLATED
 
         info = zf.getinfo("test-1.0.dist-info/RECORD")
-        permissions = (info.external_attr >> 16) & 0o777
-        assert permissions == 0o664
+        assert info.external_attr == (0o664 | stat.S_IFREG) << 16