Add bpy.app.binary_path_python

Access to the python binary distributed with Blender,
fallback to system python executable (matching Blender's version).

1 files changed, 39 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/appdir.c b/source/blender/blenkernel/intern/appdir.c
index 61aa0eb617a..4c7cda95ad1 100644
--- a/source/blender/blenkernel/intern/appdir.c
+++ b/source/blender/blenkernel/intern/appdir.c
@@ -599,6 +599,45 @@ const char *BKE_appdir_program_dir(void)
 	return bprogdir;
 }
 
+bool BKE_appdir_program_python_search(
+        char *fullpath, const size_t fullpath_len,
+        const int version_major, const int version_minor)
+{
+	const char *basename = "python";
+	bool is_found = false;
+
+	{
+		const char *python_bin_dir = BKE_appdir_folder_id(BLENDER_SYSTEM_PYTHON, "bin");
+		if (python_bin_dir) {
+			BLI_join_dirfile(fullpath, fullpath_len, python_bin_dir, basename);
+			if (
+#ifdef _WIN32
+			    BLI_path_program_extensions_add_win32(fullpath, fullpath_len)
+#else
+			    BLI_exists(fullpath)
+#endif
+			    )
+			{
+				is_found = true;
+			}
+		}
+	}
+
+	if (is_found == false) {
+		char python_ver[16];
+		BLI_snprintf(python_ver, sizeof(python_ver), "%s%d.%d", basename, version_major, version_minor);
+		if (BLI_path_program_search(fullpath, fullpath_len, python_ver)) {
+			is_found = true;
+		}
+	}
+
+	if (is_found == false) {
+		*fullpath = '\0';
+	}
+
+	return is_found;
+}
+
 /**
  * Gets the temp directory when blender first runs.
  * If the default path is not found, use try $TEMP