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glib/gio/gsettings-mapping.c
Colin Walters f42fe6cdc0 gvalue: Add explicitly signed g_value_get_schar() and g_value_set_schar() 
The documentation for G_TYPE_CHAR says:

"The type designated by G_TYPE_CHAR is unconditionally an 8-bit signed
 integer."

However the return value for g_value_get_char() was just "char" which
in C has an unspecified signedness; on e.g. x86 it's signed (which
matches the GType), but on e.g. PowerPC or ARM, it's not.

We can't break the old API, so we need to suck it up and add new API.
Port most internal users, but keep some tests of the old API too.

https://bugzilla.gnome.org/show_bug.cgi?id=659870
2011-09-22 20:05:38 -04:00

595 lines
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/*
* Copyright © 2010 Novell, Inc.
*
* 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 licence, 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Vincent Untz <vuntz@gnome.org>
*/
#include "config.h"
#include "gsettings-mapping.h"
static GVariant *
g_settings_set_mapping_int (const GValue *value,
const GVariantType *expected_type)
{
GVariant *variant = NULL;
gint64 l;
if (G_VALUE_HOLDS_INT (value))
l = g_value_get_int (value);
else if (G_VALUE_HOLDS_INT64 (value))
l = g_value_get_int64 (value);
else
return NULL;
if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT16))
{
if (G_MININT16 <= l && l <= G_MAXINT16)
variant = g_variant_new_int16 ((gint16) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT16))
{
if (0 <= l && l <= G_MAXUINT16)
variant = g_variant_new_uint16 ((guint16) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT32))
{
if (G_MININT32 <= l && l <= G_MAXINT32)
variant = g_variant_new_int32 ((gint) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT32))
{
if (0 <= l && l <= G_MAXUINT32)
variant = g_variant_new_uint32 ((guint) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT64))
{
if (G_MININT64 <= l && l <= G_MAXINT64)
variant = g_variant_new_int64 ((gint64) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT64))
{
if (0 <= l && l <= G_MAXUINT64)
variant = g_variant_new_uint64 ((guint64) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_HANDLE))
{
if (0 <= l && l <= G_MAXUINT32)
variant = g_variant_new_handle ((guint) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_DOUBLE))
variant = g_variant_new_double ((gdouble) l);
return variant;
}
static GVariant *
g_settings_set_mapping_float (const GValue *value,
const GVariantType *expected_type)
{
GVariant *variant = NULL;
gdouble d;
gint64 l;
if (G_VALUE_HOLDS_DOUBLE (value))
d = g_value_get_double (value);
else
return NULL;
l = (gint64) d;
if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT16))
{
if (G_MININT16 <= l && l <= G_MAXINT16)
variant = g_variant_new_int16 ((gint16) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT16))
{
if (0 <= l && l <= G_MAXUINT16)
variant = g_variant_new_uint16 ((guint16) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT32))
{
if (G_MININT32 <= l && l <= G_MAXINT32)
variant = g_variant_new_int32 ((gint) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT32))
{
if (0 <= l && l <= G_MAXUINT32)
variant = g_variant_new_uint32 ((guint) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT64))
{
if (G_MININT64 <= l && l <= G_MAXINT64)
variant = g_variant_new_int64 ((gint64) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT64))
{
if (0 <= l && l <= G_MAXUINT64)
variant = g_variant_new_uint64 ((guint64) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_HANDLE))
{
if (0 <= l && l <= G_MAXUINT32)
variant = g_variant_new_handle ((guint) l);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_DOUBLE))
variant = g_variant_new_double ((gdouble) d);
return variant;
}
static GVariant *
g_settings_set_mapping_unsigned_int (const GValue *value,
const GVariantType *expected_type)
{
GVariant *variant = NULL;
guint64 u;
if (G_VALUE_HOLDS_UINT (value))
u = g_value_get_uint (value);
else if (G_VALUE_HOLDS_UINT64 (value))
u = g_value_get_uint64 (value);
else
return NULL;
if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT16))
{
if (u <= G_MAXINT16)
variant = g_variant_new_int16 ((gint16) u);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT16))
{
if (u <= G_MAXUINT16)
variant = g_variant_new_uint16 ((guint16) u);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT32))
{
if (u <= G_MAXINT32)
variant = g_variant_new_int32 ((gint) u);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT32))
{
if (u <= G_MAXUINT32)
variant = g_variant_new_uint32 ((guint) u);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_INT64))
{
if (u <= G_MAXINT64)
variant = g_variant_new_int64 ((gint64) u);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_UINT64))
{
if (u <= G_MAXUINT64)
variant = g_variant_new_uint64 ((guint64) u);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_HANDLE))
{
if (u <= G_MAXUINT32)
variant = g_variant_new_handle ((guint) u);
}
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_DOUBLE))
variant = g_variant_new_double ((gdouble) u);
return variant;
}
static gboolean
g_settings_get_mapping_int (GValue *value,
GVariant *variant)
{
const GVariantType *type;
gint64 l;
type = g_variant_get_type (variant);
if (g_variant_type_equal (type, G_VARIANT_TYPE_INT16))
l = g_variant_get_int16 (variant);
else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT32))
l = g_variant_get_int32 (variant);
else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT64))
l = g_variant_get_int64 (variant);
else
return FALSE;
if (G_VALUE_HOLDS_INT (value))
{
g_value_set_int (value, l);
return (G_MININT32 <= l && l <= G_MAXINT32);
}
else if (G_VALUE_HOLDS_UINT (value))
{
g_value_set_uint (value, l);
return (0 <= l && l <= G_MAXUINT32);
}
else if (G_VALUE_HOLDS_INT64 (value))
{
g_value_set_int64 (value, l);
return (G_MININT64 <= l && l <= G_MAXINT64);
}
else if (G_VALUE_HOLDS_UINT64 (value))
{
g_value_set_uint64 (value, l);
return (0 <= l && l <= G_MAXUINT64);
}
else if (G_VALUE_HOLDS_DOUBLE (value))
{
g_value_set_double (value, l);
return TRUE;
}
return FALSE;
}
static gboolean
g_settings_get_mapping_float (GValue *value,
GVariant *variant)
{
const GVariantType *type;
gdouble d;
gint64 l;
type = g_variant_get_type (variant);
if (g_variant_type_equal (type, G_VARIANT_TYPE_DOUBLE))
d = g_variant_get_double (variant);
else
return FALSE;
l = (gint64)d;
if (G_VALUE_HOLDS_INT (value))
{
g_value_set_int (value, l);
return (G_MININT32 <= l && l <= G_MAXINT32);
}
else if (G_VALUE_HOLDS_UINT (value))
{
g_value_set_uint (value, l);
return (0 <= l && l <= G_MAXUINT32);
}
else if (G_VALUE_HOLDS_INT64 (value))
{
g_value_set_int64 (value, l);
return (G_MININT64 <= l && l <= G_MAXINT64);
}
else if (G_VALUE_HOLDS_UINT64 (value))
{
g_value_set_uint64 (value, l);
return (0 <= l && l <= G_MAXUINT64);
}
else if (G_VALUE_HOLDS_DOUBLE (value))
{
g_value_set_double (value, d);
return TRUE;
}
return FALSE;
}
static gboolean
g_settings_get_mapping_unsigned_int (GValue *value,
GVariant *variant)
{
const GVariantType *type;
guint64 u;
type = g_variant_get_type (variant);
if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT16))
u = g_variant_get_uint16 (variant);
else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT32))
u = g_variant_get_uint32 (variant);
else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT64))
u = g_variant_get_uint64 (variant);
else if (g_variant_type_equal (type, G_VARIANT_TYPE_HANDLE))
u = g_variant_get_handle (variant);
else
return FALSE;
if (G_VALUE_HOLDS_INT (value))
{
g_value_set_int (value, u);
return (u <= G_MAXINT32);
}
else if (G_VALUE_HOLDS_UINT (value))
{
g_value_set_uint (value, u);
return (u <= G_MAXUINT32);
}
else if (G_VALUE_HOLDS_INT64 (value))
{
g_value_set_int64 (value, u);
return (u <= G_MAXINT64);
}
else if (G_VALUE_HOLDS_UINT64 (value))
{
g_value_set_uint64 (value, u);
return (u <= G_MAXUINT64);
}
else if (G_VALUE_HOLDS_DOUBLE (value))
{
g_value_set_double (value, u);
return TRUE;
}
return FALSE;
}
GVariant *
g_settings_set_mapping (const GValue *value,
const GVariantType *expected_type,
gpointer user_data)
{
gchar *type_string;
if (G_VALUE_HOLDS_BOOLEAN (value))
{
if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_BOOLEAN))
return g_variant_new_boolean (g_value_get_boolean (value));
}
else if (G_VALUE_HOLDS_CHAR (value) ||
G_VALUE_HOLDS_UCHAR (value))
{
if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_BYTE))
{
if (G_VALUE_HOLDS_CHAR (value))
return g_variant_new_byte (g_value_get_schar (value));
else
return g_variant_new_byte (g_value_get_uchar (value));
}
}
else if (G_VALUE_HOLDS_INT (value) ||
G_VALUE_HOLDS_INT64 (value))
return g_settings_set_mapping_int (value, expected_type);
else if (G_VALUE_HOLDS_DOUBLE (value))
return g_settings_set_mapping_float (value, expected_type);
else if (G_VALUE_HOLDS_UINT (value) ||
G_VALUE_HOLDS_UINT64 (value))
return g_settings_set_mapping_unsigned_int (value, expected_type);
else if (G_VALUE_HOLDS_STRING (value))
{
if (g_value_get_string (value) == NULL)
return NULL;
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_STRING))
return g_variant_new_string (g_value_get_string (value));
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_BYTESTRING))
return g_variant_new_bytestring (g_value_get_string (value));
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_OBJECT_PATH))
return g_variant_new_object_path (g_value_get_string (value));
else if (g_variant_type_equal (expected_type, G_VARIANT_TYPE_SIGNATURE))
return g_variant_new_signature (g_value_get_string (value));
}
else if (G_VALUE_HOLDS (value, G_TYPE_STRV))
{
if (g_value_get_boxed (value) == NULL)
return NULL;
return g_variant_new_strv ((const gchar **) g_value_get_boxed (value),
-1);
}
else if (G_VALUE_HOLDS_ENUM (value))
{
GEnumValue *enumval;
GEnumClass *eclass;
/* GParamSpecEnum holds a ref on the class so we just peek... */
eclass = g_type_class_peek (G_VALUE_TYPE (value));
enumval = g_enum_get_value (eclass, g_value_get_enum (value));
if (enumval)
return g_variant_new_string (enumval->value_nick);
else
return NULL;
}
else if (G_VALUE_HOLDS_FLAGS (value))
{
GVariantBuilder builder;
GFlagsValue *flagsval;
GFlagsClass *fclass;
guint flags;
fclass = g_type_class_peek (G_VALUE_TYPE (value));
flags = g_value_get_flags (value);
g_variant_builder_init (&builder, G_VARIANT_TYPE ("as"));
while (flags)
{
flagsval = g_flags_get_first_value (fclass, flags);
if (flagsval == NULL)
{
g_variant_builder_clear (&builder);
return NULL;
}
g_variant_builder_add (&builder, "s", flagsval->value_nick);
flags &= ~flagsval->value;
}
return g_variant_builder_end (&builder);
}
type_string = g_variant_type_dup_string (expected_type);
g_critical ("No GSettings bind handler for type \"%s\".", type_string);
g_free (type_string);
return NULL;
}
gboolean
g_settings_get_mapping (GValue *value,
GVariant *variant,
gpointer user_data)
{
if (g_variant_is_of_type (variant, G_VARIANT_TYPE_BOOLEAN))
{
if (!G_VALUE_HOLDS_BOOLEAN (value))
return FALSE;
g_value_set_boolean (value, g_variant_get_boolean (variant));
return TRUE;
}
else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_BYTE))
{
if (G_VALUE_HOLDS_UCHAR (value))
g_value_set_uchar (value, g_variant_get_byte (variant));
else if (G_VALUE_HOLDS_CHAR (value))
g_value_set_schar (value, (gint8)g_variant_get_byte (variant));
else
return FALSE;
return TRUE;
}
else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_INT16) ||
g_variant_is_of_type (variant, G_VARIANT_TYPE_INT32) ||
g_variant_is_of_type (variant, G_VARIANT_TYPE_INT64))
return g_settings_get_mapping_int (value, variant);
else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_DOUBLE))
return g_settings_get_mapping_float (value, variant);
else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_UINT16) ||
g_variant_is_of_type (variant, G_VARIANT_TYPE_UINT32) ||
g_variant_is_of_type (variant, G_VARIANT_TYPE_UINT64) ||
g_variant_is_of_type (variant, G_VARIANT_TYPE_HANDLE))
return g_settings_get_mapping_unsigned_int (value, variant);
else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_STRING) ||
g_variant_is_of_type (variant, G_VARIANT_TYPE_OBJECT_PATH) ||
g_variant_is_of_type (variant, G_VARIANT_TYPE_SIGNATURE))
{
if (G_VALUE_HOLDS_STRING (value))
{
g_value_set_string (value, g_variant_get_string (variant, NULL));
return TRUE;
}
else if (G_VALUE_HOLDS_ENUM (value))
{
GEnumClass *eclass;
GEnumValue *evalue;
const gchar *nick;
/* GParamSpecEnum holds a ref on the class so we just peek... */
eclass = g_type_class_peek (G_VALUE_TYPE (value));
nick = g_variant_get_string (variant, NULL);
evalue = g_enum_get_value_by_nick (eclass, nick);
if (evalue)
{
g_value_set_enum (value, evalue->value);
return TRUE;
}
g_warning ("Unable to lookup enum nick '%s' via GType\n", nick);
return FALSE;
}
}
else if (g_variant_is_of_type (variant, G_VARIANT_TYPE ("as")))
{
if (G_VALUE_HOLDS (value, G_TYPE_STRV))
{
g_value_take_boxed (value, g_variant_dup_strv (variant, NULL));
return TRUE;
}
else if (G_VALUE_HOLDS_FLAGS (value))
{
GFlagsClass *fclass;
GFlagsValue *fvalue;
const gchar *nick;
GVariantIter iter;
guint flags = 0;
fclass = g_type_class_peek (G_VALUE_TYPE (value));
g_variant_iter_init (&iter, variant);
while (g_variant_iter_next (&iter, "&s", &nick))
{
fvalue = g_flags_get_value_by_nick (fclass, nick);
if (fvalue)
flags |= fvalue->value;
else
{
g_warning ("Unable to lookup flags nick '%s' via GType\n",
nick);
return FALSE;
}
}
g_value_set_flags (value, flags);
return TRUE;
}
}
else if (g_variant_is_of_type (variant, G_VARIANT_TYPE_BYTESTRING))
{
g_value_set_string (value, g_variant_get_bytestring (variant));
return TRUE;
}
g_critical ("No GSettings bind handler for type \"%s\".",
g_variant_get_type_string (variant));
return FALSE;
}
gboolean
g_settings_mapping_is_compatible (GType gvalue_type,
const GVariantType *variant_type)
{
gboolean ok = FALSE;
if (gvalue_type == G_TYPE_BOOLEAN)
ok = g_variant_type_equal (variant_type, G_VARIANT_TYPE_BOOLEAN);
else if (gvalue_type == G_TYPE_CHAR ||
gvalue_type == G_TYPE_UCHAR)
ok = g_variant_type_equal (variant_type, G_VARIANT_TYPE_BYTE);
else if (gvalue_type == G_TYPE_INT ||
gvalue_type == G_TYPE_UINT ||
gvalue_type == G_TYPE_INT64 ||
gvalue_type == G_TYPE_UINT64 ||
gvalue_type == G_TYPE_DOUBLE)
ok = (g_variant_type_equal (variant_type, G_VARIANT_TYPE_INT16) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_UINT16) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_INT32) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_UINT32) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_INT64) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_UINT64) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_HANDLE) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_DOUBLE));
else if (gvalue_type == G_TYPE_STRING)
ok = (g_variant_type_equal (variant_type, G_VARIANT_TYPE_STRING) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE ("ay")) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_OBJECT_PATH) ||
g_variant_type_equal (variant_type, G_VARIANT_TYPE_SIGNATURE));
else if (gvalue_type == G_TYPE_STRV)
ok = g_variant_type_equal (variant_type, G_VARIANT_TYPE ("as"));
else if (G_TYPE_IS_ENUM (gvalue_type))
ok = g_variant_type_equal (variant_type, G_VARIANT_TYPE_STRING);
else if (G_TYPE_IS_FLAGS (gvalue_type))
ok = g_variant_type_equal (variant_type, G_VARIANT_TYPE ("as"));
return ok;
}
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