PyDoc: support building full API docs on macOS & WIN32

Accessing context members depended on `ctypes` to access symbols
which were hidden for macOS & WIN32.

Add an API call that doesn't require the symbols to be exported.

This allows most symbols to be hidden on Linux, see D14971.

1 files changed, 7 insertions, 26 deletions

diff --git a/doc/python_api/sphinx_doc_gen.py b/doc/python_api/sphinx_doc_gen.py
index eba12b75b63..1c52bb3e57d 100644
--- a/doc/python_api/sphinx_doc_gen.py
+++ b/doc/python_api/sphinx_doc_gen.py
@@ -1200,34 +1200,18 @@ def pycontext2sphinx(basepath):
     del write_contex_cls
     # end
 
-    # nasty, get strings directly from Blender because there is no other way to get it
-    import ctypes
-
-    context_strings = (
-        "screen_context_dir",
-        "view3d_context_dir",
-        "buttons_context_dir",
-        "image_context_dir",
-        "node_context_dir",
-        "text_context_dir",
-        "clip_context_dir",
-        "sequencer_context_dir",
-        "file_context_dir",
-    )
+    # Internal API call only intended to be used to extract context members.
+    from _bpy import context_members
+    context_member_map = context_members()
+    del context_members
 
     # Track unique for `context_strings` to validate `context_type_map`.
     unique_context_strings = set()
-    blend_cdll = ctypes.CDLL("")
-    for ctx_str in context_strings:
+    for ctx_str, ctx_members in sorted(context_member_map.items()):
         subsection = "%s Context" % ctx_str.split("_")[0].title()
         fw("\n%s\n%s\n\n" % (subsection, (len(subsection) * '-')))
-
-        attr = ctypes.addressof(getattr(blend_cdll, ctx_str))
-        c_char_p_p = ctypes.POINTER(ctypes.c_char_p)
-        char_array = c_char_p_p.from_address(attr)
         i = 0
-        while char_array[i] is not None:
-            member = ctypes.string_at(char_array[i]).decode(encoding="ascii")
+        for member in ctx_members:
             unique_all_len = len(unique)
             unique.add(member)
             member_visited = unique_all_len == len(unique)
@@ -2167,10 +2151,7 @@ def rna2sphinx(basepath):
 
     # context
     if "bpy.context" not in EXCLUDE_MODULES:
-        # one of a kind, context doc (uses ctypes to extract info!)
-        # doesn't work on mac and windows
-        if PLATFORM not in {"darwin", "windows"}:
-            pycontext2sphinx(basepath)
+        pycontext2sphinx(basepath)
 
     # internal modules
     write_rst_bpy(basepath)                 # bpy, disabled by default