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Fix a warning when opening the new IM dialog.
2019-12-19, Elliott Sales de Andrade
4adf32217c85
Fix a warning when opening the new IM dialog.
/* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* Component written by Tomek Wasilczyk (http://www.wasilczyk.pl).
*
* This file is dual-licensed under the GPL2+ and the X11 (MIT) licences.
* As a recipient of this file you may choose, which license to receive the
* code under. As a contributor, you have to ensure the new code is
* compatible with both.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include
"keymapper.h"
/* The problem: we want to convert 64-bit unique integers into unique gpointer
* keys (that may be 32-bit or 64-bit, or whatever else). We also want to
* convert it back.
*
* The idea: let's store every value in our internal memory. Then, its address
* can be also an unique key. We also need a map, to quickly figure out the
* address for any previously stored value.
*
* The naming problem: values becames the keys and vice-versa.
*/
/* TODO
* For a 64-bit gpointer, keymapper could just do nothing and return the value
* as a key. But it have to be figured out at a compile time.
*/
struct
_ggp_keymapper
{
/* Table keys: pointers to 64-bit mapped *values*.
* Table values: keys (gpointers) corresponding to mapped values.
*
* Ultimately, both keys and values are the same pointers.
*
* Yes, it's hard to comment it well enough.
*/
GHashTable
*
val_to_key
;
};
ggp_keymapper
*
ggp_keymapper_new
(
void
)
{
ggp_keymapper
*
km
;
km
=
g_new0
(
ggp_keymapper
,
1
);
km
->
val_to_key
=
g_hash_table_new_full
(
g_int64_hash
,
g_int64_equal
,
g_free
,
NULL
);
return
km
;
}
void
ggp_keymapper_free
(
ggp_keymapper
*
km
)
{
if
(
km
==
NULL
)
return
;
g_hash_table_destroy
(
km
->
val_to_key
);
g_free
(
km
);
}
gpointer
ggp_keymapper_to_key
(
ggp_keymapper
*
km
,
guint64
val
)
{
guint64
*
key
;
g_return_val_if_fail
(
km
!=
NULL
,
NULL
);
key
=
g_hash_table_lookup
(
km
->
val_to_key
,
&
val
);
if
(
key
)
return
key
;
key
=
g_new
(
guint64
,
1
);
*
key
=
val
;
g_hash_table_insert
(
km
->
val_to_key
,
key
,
key
);
return
key
;
}
guint64
ggp_keymapper_from_key
(
ggp_keymapper
*
km
,
gpointer
key
)
{
g_return_val_if_fail
(
km
!=
NULL
,
0
);
g_return_val_if_fail
(
key
!=
NULL
,
0
);
return
*
((
guint64
*
)
key
);
}