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gtk/gdk/wayland/gdkkeys-wayland.c
Emmanuele Bassi 1668496359 docs: Fix GTK links and locations
2019-02-06 10:39:27 +01:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 2000 Red Hat, 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 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 <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <sys/mman.h>
#include <fribidi.h>
#include "gdk.h"
#include "gdkwayland.h"
#include "gdkprivate-wayland.h"
#include "gdk-private.h"
#include "gdkkeysprivate.h"
#include <xkbcommon/xkbcommon.h>
typedef struct _GdkWaylandKeymap GdkWaylandKeymap;
typedef struct _GdkWaylandKeymapClass GdkWaylandKeymapClass;
struct _GdkWaylandKeymap
{
GdkKeymap parent_instance;
struct xkb_keymap *xkb_keymap;
struct xkb_state *xkb_state;
PangoDirection *direction;
gboolean bidi;
};
struct _GdkWaylandKeymapClass
{
GdkKeymapClass parent_class;
};
#define GDK_TYPE_WAYLAND_KEYMAP (_gdk_wayland_keymap_get_type ())
#define GDK_WAYLAND_KEYMAP(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_WAYLAND_KEYMAP, GdkWaylandKeymap))
#define GDK_IS_WAYLAND_KEYMAP(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_WAYLAND_KEYMAP))
GType _gdk_wayland_keymap_get_type (void);
G_DEFINE_TYPE (GdkWaylandKeymap, _gdk_wayland_keymap, GDK_TYPE_KEYMAP)
static void
gdk_wayland_keymap_finalize (GObject *object)
{
GdkWaylandKeymap *keymap = GDK_WAYLAND_KEYMAP (object);
xkb_keymap_unref (keymap->xkb_keymap);
xkb_state_unref (keymap->xkb_state);
g_free (keymap->direction);
G_OBJECT_CLASS (_gdk_wayland_keymap_parent_class)->finalize (object);
}
static PangoDirection
gdk_wayland_keymap_get_direction (GdkKeymap *keymap)
{
GdkWaylandKeymap *keymap_wayland = GDK_WAYLAND_KEYMAP (keymap);
gint i;
for (i = 0; i < xkb_keymap_num_layouts (keymap_wayland->xkb_keymap); i++)
{
if (xkb_state_layout_index_is_active (keymap_wayland->xkb_state, i, XKB_STATE_LAYOUT_EFFECTIVE))
return keymap_wayland->direction[i];
}
return PANGO_DIRECTION_NEUTRAL;
}
static gboolean
gdk_wayland_keymap_have_bidi_layouts (GdkKeymap *keymap)
{
GdkWaylandKeymap *keymap_wayland = GDK_WAYLAND_KEYMAP (keymap);
return keymap_wayland->bidi;
}
static gboolean
gdk_wayland_keymap_get_caps_lock_state (GdkKeymap *keymap)
{
return xkb_state_led_name_is_active (GDK_WAYLAND_KEYMAP (keymap)->xkb_state,
XKB_LED_NAME_CAPS);
}
static gboolean
gdk_wayland_keymap_get_num_lock_state (GdkKeymap *keymap)
{
return xkb_state_led_name_is_active (GDK_WAYLAND_KEYMAP (keymap)->xkb_state,
XKB_LED_NAME_NUM);
}
static gboolean
gdk_wayland_keymap_get_scroll_lock_state (GdkKeymap *keymap)
{
return xkb_state_led_name_is_active (GDK_WAYLAND_KEYMAP (keymap)->xkb_state,
XKB_LED_NAME_SCROLL);
}
static gboolean
gdk_wayland_keymap_get_entries_for_keyval (GdkKeymap *keymap,
guint keyval,
GdkKeymapKey **keys,
gint *n_keys)
{
struct xkb_keymap *xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
GArray *retval;
guint keycode;
xkb_keycode_t min_keycode, max_keycode;
retval = g_array_new (FALSE, FALSE, sizeof (GdkKeymapKey));
min_keycode = xkb_keymap_min_keycode (xkb_keymap);
max_keycode = xkb_keymap_max_keycode (xkb_keymap);
for (keycode = min_keycode; keycode < max_keycode; keycode++)
{
gint num_layouts, layout;
num_layouts = xkb_keymap_num_layouts_for_key (xkb_keymap, keycode);
for (layout = 0; layout < num_layouts; layout++)
{
gint num_levels, level;
num_levels = xkb_keymap_num_levels_for_key (xkb_keymap, keycode, layout);
for (level = 0; level < num_levels; level++)
{
const xkb_keysym_t *syms;
gint num_syms, sym;
num_syms = xkb_keymap_key_get_syms_by_level (xkb_keymap, keycode, layout, level, &syms);
for (sym = 0; sym < num_syms; sym++)
{
if (syms[sym] == keyval)
{
GdkKeymapKey key;
key.keycode = keycode;
key.group = layout;
key.level = level;
g_array_append_val (retval, key);
}
}
}
}
}
*n_keys = retval->len;
*keys = (GdkKeymapKey*) g_array_free (retval, FALSE);
return TRUE;
}
static gboolean
gdk_wayland_keymap_get_entries_for_keycode (GdkKeymap *keymap,
guint hardware_keycode,
GdkKeymapKey **keys,
guint **keyvals,
gint *n_entries)
{
struct xkb_keymap *xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
gint num_layouts, layout;
gint num_entries;
gint i;
num_layouts = xkb_keymap_num_layouts_for_key (xkb_keymap, hardware_keycode);
num_entries = 0;
for (layout = 0; layout < num_layouts; layout++)
num_entries += xkb_keymap_num_levels_for_key (xkb_keymap, hardware_keycode, layout);
if (n_entries)
*n_entries = num_entries;
if (keys)
*keys = g_new0 (GdkKeymapKey, num_entries);
if (keyvals)
*keyvals = g_new0 (guint, num_entries);
i = 0;
for (layout = 0; layout < num_layouts; layout++)
{
gint num_levels, level;
num_levels = xkb_keymap_num_levels_for_key (xkb_keymap, hardware_keycode, layout);
for (level = 0; level < num_levels; level++)
{
const xkb_keysym_t *syms;
int num_syms;
num_syms = xkb_keymap_key_get_syms_by_level (xkb_keymap, hardware_keycode, layout, 0, &syms);
if (keys)
{
(*keys)[i].keycode = hardware_keycode;
(*keys)[i].group = layout;
(*keys)[i].level = level;
}
if (keyvals && num_syms > 0)
(*keyvals)[i] = syms[0];
i++;
}
}
return num_entries > 0;
}
static guint
gdk_wayland_keymap_lookup_key (GdkKeymap *keymap,
const GdkKeymapKey *key)
{
struct xkb_keymap *xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
const xkb_keysym_t *syms;
int num_syms;
num_syms = xkb_keymap_key_get_syms_by_level (xkb_keymap,
key->keycode,
key->group,
key->level,
&syms);
if (num_syms > 0)
return syms[0];
else
return XKB_KEY_NoSymbol;
}
static guint32
get_xkb_modifiers (struct xkb_keymap *xkb_keymap,
GdkModifierType state)
{
guint32 mods = 0;
if (state & GDK_SHIFT_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_SHIFT);
if (state & GDK_LOCK_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CAPS);
if (state & GDK_CONTROL_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CTRL);
if (state & GDK_MOD1_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_ALT);
if (state & GDK_MOD2_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_NUM);
if (state & GDK_MOD3_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod3");
if (state & GDK_MOD4_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_LOGO);
if (state & GDK_MOD5_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod5");
if (state & GDK_SUPER_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Super");
if (state & GDK_HYPER_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Hyper");
if (state & GDK_META_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Meta");
return mods;
}
static GdkModifierType
get_gdk_modifiers (struct xkb_keymap *xkb_keymap,
guint32 mods)
{
GdkModifierType state = 0;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_SHIFT)))
state |= GDK_SHIFT_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CAPS)))
state |= GDK_LOCK_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CTRL)))
state |= GDK_CONTROL_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_ALT)))
state |= GDK_MOD1_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_NUM)))
state |= GDK_MOD2_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod3")))
state |= GDK_MOD3_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_LOGO)))
state |= GDK_MOD4_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod5")))
state |= GDK_MOD5_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Super")))
state |= GDK_SUPER_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Hyper")))
state |= GDK_HYPER_MASK;
/* GTK treats MOD1 as a synonym for Alt, and does not expect it to
* be mapped around, so we should avoid adding GDK_META_MASK if MOD1
* is already included to avoid confusing GTK and applications that
* rely on that behavior.
*/
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Meta")) &&
(state & GDK_MOD1_MASK) == 0)
state |= GDK_META_MASK;
return state;
}
static gboolean
gdk_wayland_keymap_translate_keyboard_state (GdkKeymap *keymap,
guint hardware_keycode,
GdkModifierType state,
gint group,
guint *keyval,
gint *effective_group,
gint *effective_level,
GdkModifierType *consumed_modifiers)
{
struct xkb_keymap *xkb_keymap;
struct xkb_state *xkb_state;
guint32 modifiers;
guint32 consumed;
xkb_layout_index_t layout;
xkb_level_index_t level;
xkb_keysym_t sym;
g_return_val_if_fail (keymap == NULL || GDK_IS_KEYMAP (keymap), FALSE);
g_return_val_if_fail (group < 4, FALSE);
xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
modifiers = get_xkb_modifiers (xkb_keymap, state);
xkb_state = xkb_state_new (xkb_keymap);
xkb_state_update_mask (xkb_state, modifiers, 0, 0, group, 0, 0);
layout = xkb_state_key_get_layout (xkb_state, hardware_keycode);
level = xkb_state_key_get_level (xkb_state, hardware_keycode, layout);
sym = xkb_state_key_get_one_sym (xkb_state, hardware_keycode);
consumed = modifiers & ~xkb_state_mod_mask_remove_consumed (xkb_state, hardware_keycode, modifiers);
xkb_state_unref (xkb_state);
if (keyval)
*keyval = sym;
if (effective_group)
*effective_group = layout;
if (effective_level)
*effective_level = level;
if (consumed_modifiers)
*consumed_modifiers = get_gdk_modifiers (xkb_keymap, consumed);
return (sym != XKB_KEY_NoSymbol);
}
static guint
gdk_wayland_keymap_get_modifier_state (GdkKeymap *keymap)
{
struct xkb_keymap *xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
struct xkb_state *xkb_state = GDK_WAYLAND_KEYMAP (keymap)->xkb_state;
xkb_mod_mask_t mods;
mods = xkb_state_serialize_mods (xkb_state, XKB_STATE_MODS_EFFECTIVE);
return get_gdk_modifiers (xkb_keymap, mods);
}
static void
gdk_wayland_keymap_add_virtual_modifiers (GdkKeymap *keymap,
GdkModifierType *state)
{
struct xkb_keymap *xkb_keymap;
struct xkb_state *xkb_state;
xkb_mod_index_t idx;
uint32_t mods, real;
struct { const char *name; GdkModifierType mask; } vmods[] = {
{ "Super", GDK_SUPER_MASK },
{ "Hyper", GDK_HYPER_MASK },
{ "Meta", GDK_META_MASK },
{ NULL, 0 }
};
int i;
xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
mods = get_xkb_modifiers (xkb_keymap, *state);
xkb_state = xkb_state_new (xkb_keymap);
for (i = 0; vmods[i].name; i++)
{
idx = xkb_keymap_mod_get_index (xkb_keymap, vmods[i].name);
if (idx == XKB_MOD_INVALID)
continue;
xkb_state_update_mask (xkb_state, 1 << idx, 0, 0, 0, 0, 0);
real = xkb_state_serialize_mods (xkb_state, XKB_STATE_MODS_EFFECTIVE);
real &= 0xf0; /* ignore mapping to Lock, Shift, Control, Mod1 */
if (mods & real)
*state |= vmods[i].mask;
xkb_state_update_mask (xkb_state, 0, 0, 0, 0, 0, 0);
}
xkb_state_unref (xkb_state);
}
static gboolean
gdk_wayland_keymap_map_virtual_modifiers (GdkKeymap *keymap,
GdkModifierType *state)
{
struct xkb_keymap *xkb_keymap;
struct xkb_state *xkb_state;
uint32_t mods, mapped;
gboolean ret = TRUE;
xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
mods = get_xkb_modifiers (xkb_keymap, *state);
xkb_state = xkb_state_new (xkb_keymap);
xkb_state_update_mask (xkb_state, mods & ~0xff, 0, 0, 0, 0, 0);
mapped = xkb_state_serialize_mods (xkb_state, XKB_STATE_MODS_EFFECTIVE);
if ((mapped & mods & 0xff) != 0)
ret = FALSE;
*state |= get_gdk_modifiers (xkb_keymap, mapped);
xkb_state_unref (xkb_state);
return ret;
}
static void
_gdk_wayland_keymap_class_init (GdkWaylandKeymapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkKeymapClass *keymap_class = GDK_KEYMAP_CLASS (klass);
object_class->finalize = gdk_wayland_keymap_finalize;
keymap_class->get_direction = gdk_wayland_keymap_get_direction;
keymap_class->have_bidi_layouts = gdk_wayland_keymap_have_bidi_layouts;
keymap_class->get_caps_lock_state = gdk_wayland_keymap_get_caps_lock_state;
keymap_class->get_num_lock_state = gdk_wayland_keymap_get_num_lock_state;
keymap_class->get_scroll_lock_state = gdk_wayland_keymap_get_scroll_lock_state;
keymap_class->get_entries_for_keyval = gdk_wayland_keymap_get_entries_for_keyval;
keymap_class->get_entries_for_keycode = gdk_wayland_keymap_get_entries_for_keycode;
keymap_class->lookup_key = gdk_wayland_keymap_lookup_key;
keymap_class->translate_keyboard_state = gdk_wayland_keymap_translate_keyboard_state;
keymap_class->get_modifier_state = gdk_wayland_keymap_get_modifier_state;
keymap_class->add_virtual_modifiers = gdk_wayland_keymap_add_virtual_modifiers;
keymap_class->map_virtual_modifiers = gdk_wayland_keymap_map_virtual_modifiers;
}
static void
_gdk_wayland_keymap_init (GdkWaylandKeymap *keymap)
{
}
static void
update_direction (GdkWaylandKeymap *keymap)
{
gint num_layouts;
gint i;
gint *rtl;
xkb_keycode_t min_keycode, max_keycode;
guint key;
gboolean have_rtl, have_ltr;
num_layouts = xkb_keymap_num_layouts (keymap->xkb_keymap);
keymap->direction = g_renew (PangoDirection, keymap->direction, num_layouts);
rtl = g_newa (gint, num_layouts);
for (i = 0; i < num_layouts; i++)
rtl[i] = 0;
min_keycode = xkb_keymap_min_keycode (keymap->xkb_keymap);
max_keycode = xkb_keymap_max_keycode (keymap->xkb_keymap);
for (key = min_keycode; key < max_keycode; key++)
{
gint layouts, layout;
layouts = xkb_keymap_num_layouts_for_key (keymap->xkb_keymap, key);
for (layout = 0; layout < layouts; layout++)
{
const xkb_keysym_t *syms;
gint num_syms;
gint sym;
num_syms = xkb_keymap_key_get_syms_by_level (keymap->xkb_keymap, key, layout, 0, &syms);
for (sym = 0; sym < num_syms; sym++)
{
PangoDirection dir;
dir = gdk_unichar_direction (xkb_keysym_to_utf32 (syms[sym]));
switch (dir)
{
case PANGO_DIRECTION_RTL:
rtl[layout]++;
break;
case PANGO_DIRECTION_LTR:
rtl[layout]--;
break;
case PANGO_DIRECTION_TTB_LTR:
case PANGO_DIRECTION_TTB_RTL:
case PANGO_DIRECTION_WEAK_LTR:
case PANGO_DIRECTION_WEAK_RTL:
case PANGO_DIRECTION_NEUTRAL:
default:
break;
}
}
}
}
have_rtl = have_ltr = FALSE;
for (i = 0; i < num_layouts; i++)
{
if (rtl[i] > 0)
{
keymap->direction[i] = PANGO_DIRECTION_RTL;
have_rtl = TRUE;
}
else
{
keymap->direction[i] = PANGO_DIRECTION_LTR;
have_ltr = TRUE;
}
}
if (have_rtl && have_ltr)
keymap->bidi = TRUE;
}
GdkKeymap *
_gdk_wayland_keymap_new (GdkDisplay *display)
{
GdkWaylandKeymap *keymap;
struct xkb_context *context;
struct xkb_rule_names names;
keymap = g_object_new (_gdk_wayland_keymap_get_type(), NULL);
GDK_KEYMAP (keymap)->display = display;
context = xkb_context_new (0);
names.rules = "evdev";
names.model = "pc105";
names.layout = "us";
names.variant = "";
names.options = "";
keymap->xkb_keymap = xkb_keymap_new_from_names (context, &names, 0);
keymap->xkb_state = xkb_state_new (keymap->xkb_keymap);
xkb_context_unref (context);
update_direction (keymap);
return GDK_KEYMAP (keymap);
}
#ifdef G_ENABLE_DEBUG
static void
print_modifiers (struct xkb_keymap *keymap)
{
int i, j;
uint32_t real;
struct xkb_state *state;
g_print ("modifiers:\n");
for (i = 0; i < xkb_keymap_num_mods (keymap); i++)
g_print ("%s ", xkb_keymap_mod_get_name (keymap, i));
g_print ("\n\n");
g_print ("modifier mapping\n");
state = xkb_state_new (keymap);
for (i = 0; i < 8; i++)
{
gboolean need_arrow = TRUE;
g_print ("%s ", xkb_keymap_mod_get_name (keymap, i));
for (j = 8; j < xkb_keymap_num_mods (keymap); j++)
{
xkb_state_update_mask (state, 1 << j, 0, 0, 0, 0, 0);
real = xkb_state_serialize_mods (state, XKB_STATE_MODS_EFFECTIVE);
if (real & (1 << i))
{
if (need_arrow)
{
g_print ("-> ");
need_arrow = FALSE;
}
g_print ("%s ", xkb_keymap_mod_get_name (keymap, j));
}
}
g_print ("\n");
}
xkb_state_unref (state);
}
#endif
void
_gdk_wayland_keymap_update_from_fd (GdkKeymap *keymap,
uint32_t format,
uint32_t fd,
uint32_t size)
{
GdkWaylandKeymap *keymap_wayland = GDK_WAYLAND_KEYMAP (keymap);
struct xkb_context *context;
struct xkb_keymap *xkb_keymap;
char *map_str;
context = xkb_context_new (0);
map_str = mmap (NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (map_str == MAP_FAILED)
{
close(fd);
return;
}
GDK_DISPLAY_NOTE (keymap->display, INPUT, g_message ("keymap:\n%s", map_str));
xkb_keymap = xkb_keymap_new_from_string (context, map_str, format, 0);
munmap (map_str, size);
close (fd);
if (!xkb_keymap)
{
g_warning ("Got invalid keymap from compositor, keeping previous/default one");
xkb_context_unref (context);
return;
}
GDK_DISPLAY_NOTE (keymap->display, INPUT, print_modifiers (xkb_keymap));
xkb_keymap_unref (keymap_wayland->xkb_keymap);
keymap_wayland->xkb_keymap = xkb_keymap;
xkb_state_unref (keymap_wayland->xkb_state);
keymap_wayland->xkb_state = xkb_state_new (keymap_wayland->xkb_keymap);
xkb_context_unref (context);
update_direction (keymap_wayland);
}
struct xkb_keymap *
_gdk_wayland_keymap_get_xkb_keymap (GdkKeymap *keymap)
{
return GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
}
struct xkb_state *
_gdk_wayland_keymap_get_xkb_state (GdkKeymap *keymap)
{
return GDK_WAYLAND_KEYMAP (keymap)->xkb_state;
}
gboolean
_gdk_wayland_keymap_key_is_modifier (GdkKeymap *keymap,
guint keycode)
{
struct xkb_keymap *xkb_keymap = GDK_WAYLAND_KEYMAP (keymap)->xkb_keymap;
struct xkb_state *xkb_state;
gboolean is_modifier;
is_modifier = FALSE;
xkb_state = xkb_state_new (xkb_keymap);
if (xkb_state_update_key (xkb_state, keycode, XKB_KEY_DOWN) & XKB_STATE_MODS_EFFECTIVE)
is_modifier = TRUE;
xkb_state_unref (xkb_state);
return is_modifier;
}
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