[pygobject] add compat functions for the deprecated PyCObject api

[John Palmieri <johnp src gnome org>]

commit f25e763d53e5cdd4de08e90b04aea4b4c4720ac0
Author: John (J5) Palmieri <johnp redhat com>
Date:   Tue Sep 28 15:31:03 2010 -0400

    add compat functions for the deprecated PyCObject api
    
    * Moved to using the PyCapsule API for python >= 2.7
    
    https://bugzilla.gnome.org/show_bug.cgi?id=630844

 gi/gimodule.c               |    2 +-
 gi/pygi.h                   |    5 ++++-
 glib/glibmodule.c           |    2 +-
 glib/pyglib-python-compat.h |   19 +++++++++++++++++++
 glib/pyglib.c               |    6 +++---
 glib/pygoptioncontext.c     |    2 +-
 gobject/gobjectmodule.c     |    2 +-
 gobject/pygobject.h         |    6 ++++++
 gobject/pygtype.c           |   10 +++++-----
 9 files changed, 41 insertions(+), 13 deletions(-)
---
diff --git a/gi/gimodule.c b/gi/gimodule.c
index 89caf4e..d42e7e4 100644
--- a/gi/gimodule.c
+++ b/gi/gimodule.c
@@ -328,7 +328,7 @@ PYGLIB_MODULE_START(_gi, "_gi")
     _pygi_boxed_register_types (module);
     _pygi_argument_init();
 
-    api = PyCObject_FromVoidPtr ( (void *) &CAPI, NULL);
+    api = PYGLIB_PyCapsule_New ( (void *) &CAPI, "gi._API");
     if (api == NULL) {
         return;
     }
diff --git a/gi/pygi.h b/gi/pygi.h
index d1eaf05..551bb6f 100644
--- a/gi/pygi.h
+++ b/gi/pygi.h
@@ -83,8 +83,11 @@ _pygi_import (void)
     if (PyGI_API != NULL) {
         return 1;
     }
-
+#if PY_VERSION_HEX >= 0x02070000
+    PyGI_API = (struct PyGI_API*) PyCapsule_Import("gi._API", FALSE);
+#else
     PyGI_API = (struct PyGI_API*) PyCObject_Import("gi", "_API");
+#endif
     if (PyGI_API == NULL) {
         return -1;
     }
diff --git a/glib/glibmodule.c b/glib/glibmodule.c
index 4a58bc2..f1c8168 100644
--- a/glib/glibmodule.c
+++ b/glib/glibmodule.c
@@ -797,7 +797,7 @@ pyglib_register_api(PyObject *d)
 
     /* for addon libraries ... */
     PyDict_SetItemString(d, "_PyGLib_API",
-			 o=PyCObject_FromVoidPtr(&pyglib_api,NULL));
+			 o=PYGLIB_PyCapsule_New(&pyglib_api,"glib._PyGLib_API"));
     Py_DECREF(o);
     
     pyglib_init_internal(o);
diff --git a/glib/pyglib-python-compat.h b/glib/pyglib-python-compat.h
index bb7bcad..222fc8c 100644
--- a/glib/pyglib-python-compat.h
+++ b/glib/pyglib-python-compat.h
@@ -41,6 +41,25 @@ typedef int Py_ssize_t;
 typedef inquiry lenfunc;
 #endif
 
+/* PyCObject superceded by PyCapsule on Python >= 2.7 */
+#if PY_VERSION_HEX >= 0x02070000
+# define PYGLIB_PyCapsule_Check PyCapsule_CheckExact
+# define PYGLIB_PyCapsule_New(ptr, typename) \
+    PyCapsule_New(ptr, typename, NULL)
+# define PYGLIB_PyCapsule_GetPointer(obj, typename) \
+    PyCapsule_GetPointer(obj, typename)
+# define PYGLIB_PyCapsule_Import(module, symbol) \
+    PyCapsule_Import(##module##.##symbol##, FALSE)
+#else
+# define PYGLIB_PyCapsule_Check PyCObject_Check
+# define PYGLIB_PyCapsule_New(ptr, typename) \
+    PyCObject_FromVoidPtr(ptr, NULL)
+# define PYGLIB_PyCapsule_GetPointer(obj, typename) \
+  PyCObject_AsVoidPtr(obj)
+# define PYGLIB_PyCapsule_Import(module, symbol) \
+    PyCObject_Import(module, symbol)
+#endif
+
 #if PY_VERSION_HEX < 0x03000000
 
 #define PYGLIB_INIT_FUNCTION(modname, fullpkgname, functions) \
diff --git a/glib/pyglib.c b/glib/pyglib.c
index 07db579..7e1b106 100644
--- a/glib/pyglib.c
+++ b/glib/pyglib.c
@@ -71,8 +71,8 @@ pyglib_init(void)
     }
     
     cobject = PyObject_GetAttrString(glib, "_PyGLib_API");
-    if (cobject && PyCObject_Check(cobject))
-	_PyGLib_API = (struct _PyGLib_Functions *) PyCObject_AsVoidPtr(cobject);
+    if (cobject && PYGLIB_PyCapsule_Check(cobject))
+	_PyGLib_API = (struct _PyGLib_Functions *) PYGLIB_PyCapsule_GetPointer(cobject, "glib._PyGLib_API");
     else {
 	PyErr_SetString(PyExc_ImportError,
 			"could not import glib (could not find _PyGLib_API object)");
@@ -88,7 +88,7 @@ pyglib_init(void)
 void
 pyglib_init_internal(PyObject *api)
 {
-    _PyGLib_API = (struct _PyGLib_Functions *) PyCObject_AsVoidPtr(api);
+    _PyGLib_API = (struct _PyGLib_Functions *) PYGLIB_PyCapsule_GetPointer(api, "glib._PyGLib_API");
 }
 
 gboolean
diff --git a/glib/pygoptioncontext.c b/glib/pygoptioncontext.c
index 1d67ac5..fe0a2b3 100644
--- a/glib/pygoptioncontext.c
+++ b/glib/pygoptioncontext.c
@@ -288,7 +288,7 @@ pyg_option_context_richcompare(PyObject *self, PyObject *other, int op)
 static PyObject *
 pyg_option_get_context(PyGOptionContext *self)
 {
-    return PyCObject_FromVoidPtr(self->context, NULL);
+    return PYGLIB_PyCapsule_New(self->context, "goption.context");
 }
 
 static PyMethodDef pyg_option_context_methods[] = {
diff --git a/gobject/gobjectmodule.c b/gobject/gobjectmodule.c
index 4e9c07d..b6d6f1d 100644
--- a/gobject/gobjectmodule.c
+++ b/gobject/gobjectmodule.c
@@ -2511,7 +2511,7 @@ pygobject_register_api(PyObject *d)
 {
     PyObject *api;
 
-    api = PyCObject_FromVoidPtr(&pygobject_api_functions,NULL);
+    api = PYGLIB_PyCapsule_New(&pygobject_api_functions, "gobject._PyGObject_API");
     PyDict_SetItemString(d, "_PyGObject_API", api);
     Py_DECREF(api);
 }
diff --git a/gobject/pygobject.h b/gobject/pygobject.h
index e75c890..c803634 100644
--- a/gobject/pygobject.h
+++ b/gobject/pygobject.h
@@ -352,8 +352,14 @@ pygobject_init(int req_major, int req_minor, int req_micro)
     }
 
     cobject = PyObject_GetAttrString(gobject, "_PyGObject_API");
+#if PY_VERSION_HEX >= 0x02070000
+    if (cobject && PyCapsule_CheckExact(cobject))
+        _PyGObject_API = (struct _PyGObject_Functions *) PyCapsule_GetPointer(cobject, "gobject._PyGObject_API");
+
+#else
     if (cobject && PyCObject_Check(cobject))
         _PyGObject_API = (struct _PyGObject_Functions *) PyCObject_AsVoidPtr(cobject);
+#endif
     else {
         PyErr_SetString(PyExc_ImportError,
                         "could not import gobject (could not find _PyGObject_API object)");
diff --git a/gobject/pygtype.c b/gobject/pygtype.c
index c875aa2..19d8b64 100644
--- a/gobject/pygtype.c
+++ b/gobject/pygtype.c
@@ -864,8 +864,8 @@ pyg_value_from_pyobject(GValue *value, PyObject *obj)
 	else if (PyObject_TypeCheck(obj, &PyGPointer_Type) &&
 		   G_VALUE_HOLDS(value, ((PyGPointer *)obj)->gtype))
 	    g_value_set_pointer(value, pyg_pointer_get(obj, gpointer));
-	else if (PyCObject_Check(obj))
-	    g_value_set_pointer(value, PyCObject_AsVoidPtr(obj));
+	else if (PYGLIB_PyCapsule_Check(obj))
+	    g_value_set_pointer(value, PYGLIB_PyCapsule_GetPointer(obj, NULL));
 	else
 	    return -1;
 	break;
@@ -910,15 +910,15 @@ pyg_value_from_pyobject(GValue *value, PyObject *obj)
         }
 	else if ((bm = pyg_type_lookup(G_VALUE_TYPE(value))) != NULL)
 	    return bm->tovalue(value, obj);
-	else if (PyCObject_Check(obj))
-	    g_value_set_boxed(value, PyCObject_AsVoidPtr(obj));
+	else if (PYGLIB_PyCapsule_Check(obj))
+	    g_value_set_boxed(value, PYGLIB_PyCapsule_GetPointer(obj, NULL));
 	else
 	    return -1;
 	break;
     }
     case G_TYPE_PARAM:
 	if (PyGParamSpec_Check(obj))
-	    g_value_set_param(value, PyCObject_AsVoidPtr(obj));
+	    g_value_set_param(value, PYGLIB_PyCapsule_GetPointer(obj, NULL));
 	else
 	    return -1;
 	break;