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Make sure gtk4 was found before trying to build vala bindings against it
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2 weeks ago, Gary Kramlich
7027845d098d
Make sure gtk4 was found before trying to build vala bindings against it
This error only showed up when gtk4 was enabled but not found.
Testing Done:
Built on haiku that doesn't have gtk without setting `-Dgtk4=false`.
Built on debian testing normally.
Reviewed at https://reviews.imfreedom.org/r/3069/
/*
* Copyright (C) 2011-2021 Gary Kramlich <grim@reaperworld.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#define PY_SSIZE_T_CLEAN
#include
<Python.h>
#include
"gplugin-python3-loader.h"
#include
<glib/gi18n-lib.h>
#include
<pygobject.h>
#include
"gplugin-python3-plugin.h"
#include
"gplugin-python3-utils.h"
struct
_GPluginPython3Loader
{
GPluginLoader
parent
;
};
G_DEFINE_DYNAMIC_TYPE_EXTENDED
(
GPluginPython3Loader
,
gplugin_python3_loader
,
GPLUGIN_TYPE_LOADER
,
G_TYPE_FLAG_FINAL
,
{})
/******************************************************************************
* GPluginLoader Implementation
*****************************************************************************/
static
GSList
*
gplugin_python3_loader_supported_extensions
(
G_GNUC_UNUSED
GPluginLoader
*
l
)
{
return
g_slist_append
(
NULL
,
"py"
);
}
static
GPluginPlugin
*
gplugin_python3_loader_query
(
GPluginLoader
*
loader
,
const
gchar
*
filename
,
G_GNUC_UNUSED
GError
**
error
)
{
GPluginPlugin
*
plugin
=
NULL
;
GObject
*
info
=
NULL
;
PyObject
*
pyinfo
=
NULL
,
*
args
=
NULL
;
PyObject
*
module
=
NULL
,
*
package_list
=
NULL
,
*
module_dict
=
NULL
;
PyObject
*
query
=
NULL
,
*
load
=
NULL
,
*
unload
=
NULL
;
PyGILState_STATE
state
;
gchar
*
module_name
=
NULL
,
*
dir_name
=
NULL
;
/* lock the gil */
state
=
pyg_gil_state_ensure
();
/* create package_list as a tuple to handle 'import foo.bar' */
package_list
=
PyTuple_New
(
0
);
/* now figure out the module name from the filename */
module_name
=
gplugin_python3_filename_to_module
(
filename
);
/* grab the dirname since we need it on sys.path to import the module */
dir_name
=
g_path_get_dirname
(
filename
);
gplugin_python3_add_module_path
(
dir_name
);
g_free
(
dir_name
);
/* import the module */
module
=
PyImport_ImportModuleEx
(
module_name
,
NULL
,
NULL
,
package_list
);
if
(
PyErr_Occurred
())
{
g_warning
(
_
(
"Failed to query %s"
),
filename
);
if
(
error
!=
NULL
)
{
*
error
=
gplugin_python3_exception_to_gerror
();
}
/* clean some stuff up */
g_free
(
module_name
);
Py_DECREF
(
package_list
);
pyg_gil_state_release
(
state
);
return
NULL
;
}
/* clean some stuff up */
g_free
(
module_name
);
Py_DECREF
(
package_list
);
/* at this point we have the module, lets find the query, load, and unload
* functions.
*/
module_dict
=
PyModule_GetDict
(
module
);
query
=
PyDict_GetItemString
(
module_dict
,
"gplugin_query"
);
if
(
query
==
NULL
)
{
g_warning
(
_
(
"Failed to find the gplugin_query function in %s"
),
filename
);
Py_DECREF
(
module
);
pyg_gil_state_release
(
state
);
return
NULL
;
}
if
(
!
PyCallable_Check
(
query
))
{
g_warning
(
_
(
"Found gplugin_query in %s but it is not a "
"function"
),
filename
);
Py_DECREF
(
module
);
pyg_gil_state_release
(
state
);
return
NULL
;
}
load
=
PyDict_GetItemString
(
module_dict
,
"gplugin_load"
);
if
(
load
==
NULL
)
{
g_warning
(
_
(
"Failed to find the gplugin_load function in %s"
),
filename
);
Py_DECREF
(
module
);
pyg_gil_state_release
(
state
);
return
NULL
;
}
if
(
!
PyCallable_Check
(
load
))
{
g_warning
(
_
(
"Found gplugin_load in %s but it is not a "
"function"
),
filename
);
Py_DECREF
(
module
);
pyg_gil_state_release
(
state
);
return
NULL
;
}
unload
=
PyDict_GetItemString
(
module_dict
,
"gplugin_unload"
);
if
(
unload
==
NULL
)
{
g_warning
(
_
(
"Failed to find the gplugin_unload function in %s"
),
filename
);
Py_DECREF
(
module
);
pyg_gil_state_release
(
state
);
return
NULL
;
}
if
(
!
PyCallable_Check
(
unload
))
{
g_warning
(
_
(
"Found gplugin_unload in %s but it is not a "
"function"
),
filename
);
Py_DECREF
(
module
);
pyg_gil_state_release
(
state
);
return
NULL
;
}
/* now that we have everything, call the query method and get the plugin's
* info.
*/
args
=
PyTuple_New
(
0
);
pyinfo
=
PyObject_Call
(
query
,
args
,
NULL
);
Py_DECREF
(
args
);
info
=
pygobject_get
(
pyinfo
);
/* now that we have everything, create the plugin */
/* clang-format off */
plugin
=
g_object_new
(
GPLUGIN_PYTHON3_TYPE_PLUGIN
,
"filename"
,
filename
,
"loader"
,
loader
,
"module"
,
module
,
"info"
,
info
,
"load-func"
,
load
,
"unload-func"
,
unload
,
NULL
);
/* clang-format on */
Py_DECREF
(
pyinfo
);
Py_DECREF
(
module
);
/* unlock the gil */
pyg_gil_state_release
(
state
);
return
plugin
;
}
static
gboolean
gplugin_python3_loader_load
(
G_GNUC_UNUSED
GPluginLoader
*
loader
,
GPluginPlugin
*
plugin
,
GError
**
error
)
{
PyObject
*
load
=
NULL
,
*
pyplugin
=
NULL
,
*
result
=
NULL
;
gboolean
ret
=
FALSE
;
g_object_get
(
plugin
,
"load-func"
,
&
load
,
NULL
);
pyplugin
=
pygobject_new
(
G_OBJECT
(
plugin
));
result
=
PyObject_CallFunctionObjArgs
(
load
,
pyplugin
,
NULL
);
Py_DECREF
(
pyplugin
);
if
(
PyErr_Occurred
())
{
Py_XDECREF
(
result
);
if
(
error
!=
NULL
)
{
*
error
=
gplugin_python3_exception_to_gerror
();
}
return
FALSE
;
}
ret
=
PyObject_IsTrue
(
result
);
Py_DECREF
(
result
);
if
(
!
ret
)
{
g_set_error_literal
(
error
,
GPLUGIN_DOMAIN
,
0
,
_
(
"Failed to load plugin"
));
}
return
ret
;
}
static
gboolean
gplugin_python3_loader_unload
(
G_GNUC_UNUSED
GPluginLoader
*
loader
,
GPluginPlugin
*
plugin
,
gboolean
shutdown
,
GError
**
error
)
{
PyObject
*
unload
=
NULL
,
*
result
=
NULL
;
PyObject
*
pyplugin
=
NULL
,
*
pyshutdown
=
NULL
;
gboolean
ret
=
FALSE
;
g_object_get
(
plugin
,
"unload-func"
,
&
unload
,
NULL
);
pyplugin
=
pygobject_new
(
G_OBJECT
(
plugin
));
pyshutdown
=
PyBool_FromLong
(
shutdown
);
result
=
PyObject_CallFunctionObjArgs
(
unload
,
pyplugin
,
pyshutdown
,
NULL
);
Py_DECREF
(
pyplugin
);
Py_DECREF
(
pyshutdown
);
if
(
PyErr_Occurred
())
{
Py_XDECREF
(
result
);
if
(
error
!=
NULL
)
{
*
error
=
gplugin_python3_exception_to_gerror
();
}
return
FALSE
;
}
ret
=
PyObject_IsTrue
(
result
);
Py_DECREF
(
result
);
if
(
!
ret
)
{
g_set_error_literal
(
error
,
GPLUGIN_DOMAIN
,
0
,
_
(
"Failed to unload plugin"
));
}
return
ret
;
}
/******************************************************************************
* Python3 Stuff
*****************************************************************************/
static
gboolean
gplugin_python3_loader_init_pygobject
(
void
)
{
pygobject_init
(
3
,
0
,
0
);
if
(
PyErr_Occurred
())
{
PyObject
*
type
=
NULL
,
*
value
=
NULL
,
*
tb
=
NULL
,
*
obj
=
NULL
;
PyErr_Fetch
(
&
type
,
&
value
,
&
tb
);
Py_DECREF
(
type
);
Py_XDECREF
(
tb
);
obj
=
PyUnicode_AsUTF8String
(
value
);
Py_DECREF
(
value
);
g_warning
(
"Failed to initialize PyGObject : %s"
,
PyBytes_AsString
(
obj
));
Py_DECREF
(
obj
);
return
FALSE
;
}
/* enable threads */
pyg_enable_threads
();
/* disable g_log redirections */
pyg_disable_warning_redirections
();
return
TRUE
;
}
static
gboolean
gplugin_python3_loader_init_gettext
(
void
)
{
PyObject
*
module_dict
=
NULL
,
*
install
=
NULL
;
PyObject
*
gettext
=
NULL
,
*
result
=
NULL
;
gettext
=
PyImport_ImportModule
(
"gettext"
);
if
(
gettext
==
NULL
)
{
g_warning
(
"Failed to import gettext"
);
return
FALSE
;
}
module_dict
=
PyModule_GetDict
(
gettext
);
install
=
PyDict_GetItemString
(
module_dict
,
"install"
);
result
=
PyObject_CallFunction
(
install
,
"ss"
,
GETTEXT_PACKAGE
,
LOCALEDIR
);
Py_XDECREF
(
result
);
Py_DECREF
(
gettext
);
return
TRUE
;
}
static
gboolean
gplugin_python3_loader_init_python
(
void
)
{
#if PY_VERSION_HEX >= 0x03080000
PyConfig
config
;
PyStatus
status
;
PyConfig_InitIsolatedConfig
(
&
config
);
status
=
PyConfig_SetBytesString
(
&
config
,
&
config
.
program_name
,
g_get_prgname
());
if
(
PyStatus_Exception
(
status
))
{
g_warning
(
"Could not convert program name to wchar_t string."
);
PyConfig_Clear
(
&
config
);
return
FALSE
;
}
status
=
Py_InitializeFromConfig
(
&
config
);
PyConfig_Clear
(
&
config
);
if
(
PyStatus_Exception
(
status
))
{
g_warning
(
"Could not initialize Python."
);
return
FALSE
;
}
#else
/* PY_VERSION_HEX >= 0x03080000 */
wchar_t
*
argv
[]
=
{
NULL
,
NULL
};
/* Initializes Python3 */
if
(
!
Py_IsInitialized
())
{
Py_InitializeEx
(
FALSE
);
}
argv
[
0
]
=
Py_DecodeLocale
(
g_get_prgname
(),
NULL
);
if
(
argv
[
0
]
==
NULL
)
{
g_warning
(
"Could not convert program name to wchar_t string."
);
return
FALSE
;
}
/* setup sys.path according to
* https://docs.python.org/3/c-api/init.html#PySys_SetArgvEx
*/
PySys_SetArgvEx
(
1
,
argv
,
0
);
PyMem_RawFree
(
argv
[
0
]);
#endif
/* PY_VERSION_HEX >= 0x03080000 */
/* initialize pygobject */
if
(
gplugin_python3_loader_init_pygobject
())
{
if
(
gplugin_python3_loader_init_gettext
())
{
return
TRUE
;
}
}
return
FALSE
;
}
/******************************************************************************
* GObject Implementation
*****************************************************************************/
static
void
gplugin_python3_loader_init
(
G_GNUC_UNUSED
GPluginPython3Loader
*
loader
)
{
}
static
void
gplugin_python3_loader_class_finalize
(
G_GNUC_UNUSED
GPluginPython3LoaderClass
*
klass
)
{
}
static
void
gplugin_python3_loader_class_init
(
GPluginPython3LoaderClass
*
klass
)
{
GPluginLoaderClass
*
loader_class
=
GPLUGIN_LOADER_CLASS
(
klass
);
loader_class
->
supported_extensions
=
gplugin_python3_loader_supported_extensions
;
loader_class
->
query
=
gplugin_python3_loader_query
;
loader_class
->
load
=
gplugin_python3_loader_load
;
loader_class
->
unload
=
gplugin_python3_loader_unload
;
}
/******************************************************************************
* API
*****************************************************************************/
void
gplugin_python3_loader_register
(
GTypeModule
*
module
)
{
gplugin_python3_loader_register_type
(
module
);
gplugin_python3_loader_init_python
();
}
GPluginLoader
*
gplugin_python3_loader_new
(
void
)
{
/* clang-format off */
return
GPLUGIN_LOADER
(
g_object_new
(
GPLUGIN_PYTHON3_TYPE_LOADER
,
"id"
,
"gplugin-python3"
,
NULL
));
/* clang-format on */
}