Improved pre-processing for SWIG problems

src/swig-0_28_0/basicio_wrap.cxx

@@ -9978,14 +9978,7 @@ SWIGINTERN SwigPyClientData SwigPyBuiltin__Exiv2__MemIo_clientdata = {0, 0, 0, 0
 
 static SwigPyGetSet XPathIo___dict___getset = { SwigPyObject_get___dict__, 0 };
 SWIGINTERN PyGetSetDef SwigPyBuiltin__Exiv2__XPathIo_getset[] = {
-    { (char *)"__dict__", SwigPyBuiltin_FunpackGetterClosure, 0, (char *)"\n"
-		"   The extension of the temporary file which is created when getting input data\n"
-		"           to read metadata. This file will be deleted in destructor.\n"
-		"\n"
-		"   The extension of the generated file which is created when getting input data\n"
-		"           to add or modify the metadata.\n"
-		"Default constructor that reads data from stdin/data uri path and writes them to the temp file.\n"
-		"", &XPathIo___dict___getset },
+    { (char *)"__dict__", SwigPyBuiltin_FunpackGetterClosure, 0, (char *)" Default constructor that reads data from stdin/data uri path and writes them to the temp file.", &XPathIo___dict___getset },
     { NULL, NULL, NULL, NULL, NULL } /* Sentinel */
 };
 

utils/build_swig.py

@@ -120,9 +120,11 @@ def main():
             with open(os.path.join(incl_dir, file), 'r') as in_file:
                 with open(os.path.join(dest, file), 'w') as out_file:
                     for line in in_file.readlines():
-                        if 'static constexpr auto' in line:
-                            continue
-                        line = attr.sub('', line)
+                        if swig_version < (4, 2, 0):
+                            line = line.replace('static constexpr auto',
+                                                'static const char*')
+                        if swig_version < (4, 1, 0):
+                            line = attr.sub('', line)
                         out_file.write(line)
         # make options list
         swig_opts = ['-c++', '-python', '-builtin',