mirror of https://github.com/GNOME/gimp.git
738 lines
23 KiB
C
738 lines
23 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* Object properties deserialization routines
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* Copyright (C) 2001-2002 Sven Neumann <sven@gimp.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <glib-object.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpcolor/gimpcolor.h"
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#include "libgimpmath/gimpmath.h"
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#include "config-types.h"
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#include "gimpconfig.h"
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#include "gimpconfig-deserialize.h"
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#include "gimpconfig-params.h"
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#include "gimpconfig-path.h"
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#include "gimpconfig-types.h"
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#include "gimpscanner.h"
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#include "gimp-intl.h"
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/*
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* All functions return G_TOKEN_RIGHT_PAREN on success,
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* the GTokenType they would have expected but didn't get
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* or G_TOKEN_NONE if they got the expected token but
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* couldn't parse it.
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*/
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static GTokenType gimp_config_deserialize_unknown (GObject *object,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_property (GObject *object,
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GScanner *scanner,
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gint nest_level);
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static GTokenType gimp_config_deserialize_value (GValue *value,
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GObject *object,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_fundamental (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_enum (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_memsize (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_path (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_color (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_matrix2 (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_object (GValue *value,
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GObject *object,
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GParamSpec *prop_spec,
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GScanner *scanner,
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gint nest_level);
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static GTokenType gimp_config_deserialize_value_array (GValue *value,
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GObject *object,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static GTokenType gimp_config_deserialize_any (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner);
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static inline gboolean scanner_string_utf8_valid (GScanner *scanner,
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const gchar *token_name);
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/**
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* gimp_config_deserialize_properties:
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* @object: a #GObject.
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* @scanner: a #GScanner.
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* @embedded_scope: %TRUE if a trailing ')' should not trigger a parse error.
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* @store_unknown_tokens: %TRUE if you want to store unknown tokens.
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*
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* This function uses the @scanner to configure the properties of @object.
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*
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* The store_unknown_tokens parameter is a special feature for #GimpRc.
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* If it set to %TRUE, unknown tokens (e.g. tokens that don't refer to
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* a property of @object) with string values are attached to @object as
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* unknown tokens. GimpConfig has a couple of functions to handle the
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* attached key/value pairs.
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*
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* Return value:
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**/
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gboolean
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gimp_config_deserialize_properties (GObject *object,
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GScanner *scanner,
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gint nest_level,
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gboolean store_unknown_tokens)
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{
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GObjectClass *klass;
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GParamSpec **property_specs;
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guint n_property_specs;
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guint i;
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guint scope_id;
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guint old_scope_id;
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GTokenType token;
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GTokenType next;
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g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
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klass = G_OBJECT_GET_CLASS (object);
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property_specs = g_object_class_list_properties (klass, &n_property_specs);
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if (!property_specs)
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return TRUE;
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scope_id = g_type_qname (G_TYPE_FROM_INSTANCE (object));
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old_scope_id = g_scanner_set_scope (scanner, scope_id);
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for (i = 0; i < n_property_specs; i++)
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{
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GParamSpec *prop_spec = property_specs[i];
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if (prop_spec->flags & GIMP_PARAM_SERIALIZE)
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{
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g_scanner_scope_add_symbol (scanner, scope_id,
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prop_spec->name, prop_spec);
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}
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}
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g_free (property_specs);
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g_object_freeze_notify (object);
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token = G_TOKEN_LEFT_PAREN;
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while (TRUE)
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{
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next = g_scanner_peek_next_token (scanner);
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if (next != token &&
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! (store_unknown_tokens &&
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token == G_TOKEN_SYMBOL && next == G_TOKEN_IDENTIFIER))
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{
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break;
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}
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token = g_scanner_get_next_token (scanner);
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switch (token)
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{
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case G_TOKEN_LEFT_PAREN:
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token = G_TOKEN_SYMBOL;
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break;
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case G_TOKEN_IDENTIFIER:
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token = gimp_config_deserialize_unknown (object, scanner);
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break;
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case G_TOKEN_SYMBOL:
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token = gimp_config_deserialize_property (object,
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scanner, nest_level);
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break;
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case G_TOKEN_RIGHT_PAREN:
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token = G_TOKEN_LEFT_PAREN;
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break;
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default: /* do nothing */
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break;
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}
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}
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g_scanner_set_scope (scanner, old_scope_id);
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g_object_thaw_notify (object);
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/* If store_unknown_tokens is TRUE but the unknown token value couldn't
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be parsed the default error message is rather confusing.
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We try to produce something more meaningful here ... */
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if ((store_unknown_tokens &&
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token == G_TOKEN_STRING && next == G_TOKEN_IDENTIFIER))
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{
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g_scanner_unexp_token (scanner, G_TOKEN_SYMBOL, NULL, NULL, NULL,
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_("fatal parse error"), TRUE);
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return FALSE;
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}
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return gimp_config_deserialize_return (scanner, token, nest_level);
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}
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static GTokenType
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gimp_config_deserialize_unknown (GObject *object,
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GScanner *scanner)
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{
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gchar *key;
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if (g_scanner_peek_next_token (scanner) != G_TOKEN_STRING)
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return G_TOKEN_STRING;
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key = g_strdup (scanner->value.v_identifier);
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g_scanner_get_next_token (scanner);
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if (!scanner_string_utf8_valid (scanner, key))
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{
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g_free (key);
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return G_TOKEN_NONE;
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}
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gimp_config_add_unknown_token (object, key, scanner->value.v_string);
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g_free (key);
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return G_TOKEN_RIGHT_PAREN;
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}
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static GTokenType
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gimp_config_deserialize_property (GObject *object,
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GScanner *scanner,
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gint nest_level)
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{
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GTypeClass *owner_class;
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GimpConfigInterface *gimp_config_iface;
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GimpConfigInterface *parent_iface;
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GParamSpec *prop_spec;
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GTokenType token = G_TOKEN_RIGHT_PAREN;
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GValue value = { 0, };
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prop_spec = G_PARAM_SPEC (scanner->value.v_symbol);
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g_value_init (&value, prop_spec->value_type);
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owner_class = g_type_class_peek (prop_spec->owner_type);
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gimp_config_iface = g_type_interface_peek (owner_class,
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GIMP_TYPE_CONFIG_INTERFACE);
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/* We must call deserialize_property() *only* if the *exact* class
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* which implements it is param_spec->owner_type's class.
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*
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* Therefore, we ask param_spec->owner_type's immediate parent class
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* for it's GimpConfigInterface and check if we get a different pointer.
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*
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* (if the pointers are the same, param_spec->owner_type's
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* GimpConfigInterface is inherited from one of it's parent classes
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* and thus not able to handle param_spec->owner_type's properties).
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*/
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if (gimp_config_iface)
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{
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GTypeClass *owner_parent_class;
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owner_parent_class = g_type_class_peek_parent (owner_class),
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parent_iface = g_type_interface_peek (owner_parent_class,
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GIMP_TYPE_CONFIG_INTERFACE);
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}
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if (gimp_config_iface &&
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gimp_config_iface != parent_iface && /* see comment above */
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gimp_config_iface->deserialize_property &&
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gimp_config_iface->deserialize_property (object,
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prop_spec->param_id,
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&value,
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prop_spec,
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scanner,
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&token))
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{
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/* nop */
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}
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else
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{
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if (G_VALUE_HOLDS_OBJECT (&value))
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token = gimp_config_deserialize_object (&value,
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object, prop_spec,
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scanner, nest_level);
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else
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token = gimp_config_deserialize_value (&value,
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object, prop_spec, scanner);
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}
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if (token == G_TOKEN_RIGHT_PAREN &&
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g_scanner_peek_next_token (scanner) == token)
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{
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if (! (G_VALUE_HOLDS_OBJECT (&value) &&
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(prop_spec->flags & GIMP_PARAM_AGGREGATE)))
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g_object_set_property (object, prop_spec->name, &value);
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}
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#if CONFIG_DEBUG
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else
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{
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g_warning ("couldn't deserialize property %s::%s of type %s",
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g_type_name (G_TYPE_FROM_INSTANCE (object)),
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prop_spec->name,
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g_type_name (prop_spec->value_type));
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}
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#endif
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g_value_unset (&value);
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return token;
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}
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static GTokenType
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gimp_config_deserialize_value (GValue *value,
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GObject *object,
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GParamSpec *prop_spec,
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GScanner *scanner)
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{
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if (G_TYPE_FUNDAMENTAL (prop_spec->value_type) == G_TYPE_ENUM)
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{
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return gimp_config_deserialize_enum (value, prop_spec, scanner);
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}
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else if (G_TYPE_IS_FUNDAMENTAL (prop_spec->value_type))
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{
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return gimp_config_deserialize_fundamental (value, prop_spec, scanner);
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}
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else if (prop_spec->value_type == GIMP_TYPE_MEMSIZE)
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{
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return gimp_config_deserialize_memsize (value, prop_spec, scanner);
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}
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else if (prop_spec->value_type == GIMP_TYPE_PATH)
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{
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return gimp_config_deserialize_path (value, prop_spec, scanner);
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}
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else if (prop_spec->value_type == GIMP_TYPE_COLOR)
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{
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return gimp_config_deserialize_color (value, prop_spec, scanner);
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}
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else if (prop_spec->value_type == GIMP_TYPE_MATRIX2)
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{
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return gimp_config_deserialize_matrix2 (value, prop_spec, scanner);
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}
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else if (prop_spec->value_type == G_TYPE_VALUE_ARRAY)
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{
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return gimp_config_deserialize_value_array (value,
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object, prop_spec, scanner);
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}
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/* This fallback will only work for value_types that
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* can be transformed from a string value.
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*/
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return gimp_config_deserialize_any (value, prop_spec, scanner);
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}
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static GTokenType
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gimp_config_deserialize_fundamental (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner)
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{
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GTokenType token;
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GType value_type;
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gboolean negate = FALSE;
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value_type = G_TYPE_FUNDAMENTAL (prop_spec->value_type);
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switch (value_type)
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{
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case G_TYPE_STRING:
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token = G_TOKEN_STRING;
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break;
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case G_TYPE_BOOLEAN:
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token = G_TOKEN_IDENTIFIER;
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break;
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case G_TYPE_INT:
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case G_TYPE_LONG:
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if (g_scanner_peek_next_token (scanner) == '-')
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{
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negate = TRUE;
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g_scanner_get_next_token (scanner);
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}
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/* fallthrough */
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case G_TYPE_UINT:
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case G_TYPE_ULONG:
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token = G_TOKEN_INT;
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break;
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case G_TYPE_FLOAT:
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case G_TYPE_DOUBLE:
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token = G_TOKEN_FLOAT;
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break;
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default:
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token = G_TOKEN_NONE;
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g_assert_not_reached ();
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break;
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}
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if (g_scanner_peek_next_token (scanner) != token)
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{
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return token;
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}
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g_scanner_get_next_token (scanner);
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switch (value_type)
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{
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case G_TYPE_STRING:
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if (scanner_string_utf8_valid (scanner, prop_spec->name))
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g_value_set_static_string (value, scanner->value.v_string);
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else
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return G_TOKEN_NONE;
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break;
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case G_TYPE_BOOLEAN:
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if (! g_ascii_strcasecmp (scanner->value.v_identifier, "yes") ||
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! g_ascii_strcasecmp (scanner->value.v_identifier, "true"))
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g_value_set_boolean (value, TRUE);
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else if (! g_ascii_strcasecmp (scanner->value.v_identifier, "no") ||
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! g_ascii_strcasecmp (scanner->value.v_identifier, "false"))
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g_value_set_boolean (value, FALSE);
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else
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{
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g_scanner_error
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(scanner,
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/* please don't translate 'yes' and 'no' */
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_("expected 'yes' or 'no' for boolean token %s, got '%s'"),
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prop_spec->name, scanner->value.v_identifier);
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return G_TOKEN_NONE;
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}
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break;
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case G_TYPE_INT:
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g_value_set_int (value, (negate ?
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- scanner->value.v_int : scanner->value.v_int));
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break;
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case G_TYPE_UINT:
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g_value_set_uint (value, scanner->value.v_int);
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break;
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case G_TYPE_LONG:
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g_value_set_long (value, (negate ?
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- scanner->value.v_int : scanner->value.v_int));
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break;
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case G_TYPE_ULONG:
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g_value_set_ulong (value, scanner->value.v_int);
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break;
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case G_TYPE_FLOAT:
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g_value_set_float (value, scanner->value.v_float);
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break;
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case G_TYPE_DOUBLE:
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g_value_set_double (value, scanner->value.v_float);
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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|
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return G_TOKEN_RIGHT_PAREN;
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}
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|
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static GTokenType
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gimp_config_deserialize_enum (GValue *value,
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GParamSpec *prop_spec,
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GScanner *scanner)
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{
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GEnumClass *enum_class;
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GEnumValue *enum_value;
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enum_class = g_type_class_peek (G_VALUE_TYPE (value));
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switch (g_scanner_peek_next_token (scanner))
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{
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case G_TOKEN_IDENTIFIER:
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g_scanner_get_next_token (scanner);
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enum_value = g_enum_get_value_by_nick (G_ENUM_CLASS (enum_class),
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scanner->value.v_identifier);
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if (!enum_value)
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enum_value = g_enum_get_value_by_name (G_ENUM_CLASS (enum_class),
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scanner->value.v_identifier);
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if (!enum_value)
|
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{
|
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g_scanner_error (scanner,
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_("invalid value '%s' for token %s"),
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scanner->value.v_identifier, prop_spec->name);
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return G_TOKEN_NONE;
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}
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break;
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|
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case G_TOKEN_INT:
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g_scanner_get_next_token (scanner);
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enum_value = g_enum_get_value (enum_class, scanner->value.v_int);
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|
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if (!enum_value)
|
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{
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g_scanner_error (scanner,
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_("invalid value '%ld' for token %s"),
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scanner->value.v_int, prop_spec->name);
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return G_TOKEN_NONE;
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}
|
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break;
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default:
|
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return G_TOKEN_IDENTIFIER;
|
|
}
|
|
|
|
g_value_set_enum (value, enum_value->value);
|
|
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
}
|
|
|
|
static GTokenType
|
|
gimp_config_deserialize_memsize (GValue *value,
|
|
GParamSpec *prop_spec,
|
|
GScanner *scanner)
|
|
{
|
|
gchar *orig_cset_first = scanner->config->cset_identifier_first;
|
|
gchar *orig_cset_nth = scanner->config->cset_identifier_nth;
|
|
|
|
scanner->config->cset_identifier_first = G_CSET_DIGITS;
|
|
scanner->config->cset_identifier_nth = G_CSET_DIGITS "gGmMkKbB";
|
|
|
|
if (g_scanner_peek_next_token (scanner) != G_TOKEN_IDENTIFIER)
|
|
return G_TOKEN_IDENTIFIER;
|
|
|
|
g_scanner_get_next_token (scanner);
|
|
|
|
scanner->config->cset_identifier_first = orig_cset_first;
|
|
scanner->config->cset_identifier_nth = orig_cset_nth;
|
|
|
|
if (gimp_memsize_set_from_string (value, scanner->value.v_identifier))
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
else
|
|
return G_TOKEN_NONE;
|
|
}
|
|
|
|
static GTokenType
|
|
gimp_config_deserialize_path (GValue *value,
|
|
GParamSpec *prop_spec,
|
|
GScanner *scanner)
|
|
{
|
|
GError *error = NULL;
|
|
|
|
if (g_scanner_peek_next_token (scanner) != G_TOKEN_STRING)
|
|
return G_TOKEN_STRING;
|
|
|
|
g_scanner_get_next_token (scanner);
|
|
|
|
if (!scanner_string_utf8_valid (scanner, prop_spec->name))
|
|
return G_TOKEN_NONE;
|
|
|
|
if (scanner->value.v_string)
|
|
{
|
|
/* Check if the string can be expanded
|
|
* and converted to the filesystem encoding.
|
|
*/
|
|
gchar *expand = gimp_config_path_expand (scanner->value.v_string,
|
|
TRUE, &error);
|
|
|
|
if (!expand)
|
|
{
|
|
g_scanner_error (scanner,
|
|
_("while parsing token %s: %s"),
|
|
prop_spec->name, error->message);
|
|
g_error_free (error);
|
|
|
|
return G_TOKEN_NONE;
|
|
}
|
|
|
|
g_free (expand);
|
|
|
|
g_value_set_static_string (value, scanner->value.v_string);
|
|
}
|
|
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
}
|
|
|
|
static GTokenType
|
|
gimp_config_deserialize_color (GValue *value,
|
|
GParamSpec *prop_spec,
|
|
GScanner *scanner)
|
|
{
|
|
GimpRGB color;
|
|
|
|
if (! gimp_scanner_parse_color (scanner, &color))
|
|
return G_TOKEN_NONE;
|
|
|
|
g_value_set_boxed (value, &color);
|
|
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
}
|
|
|
|
static GTokenType
|
|
gimp_config_deserialize_matrix2 (GValue *value,
|
|
GParamSpec *prop_spec,
|
|
GScanner *scanner)
|
|
{
|
|
GimpMatrix2 matrix;
|
|
|
|
if (! gimp_scanner_parse_matrix2 (scanner, &matrix))
|
|
return G_TOKEN_NONE;
|
|
|
|
g_value_set_boxed (value, &matrix);
|
|
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
}
|
|
|
|
static GTokenType
|
|
gimp_config_deserialize_object (GValue *value,
|
|
GObject *object,
|
|
GParamSpec *prop_spec,
|
|
GScanner *scanner,
|
|
gint nest_level)
|
|
{
|
|
GimpConfigInterface *gimp_config_iface;
|
|
GObject *prop_object;
|
|
|
|
g_object_get_property (object, prop_spec->name, value);
|
|
|
|
prop_object = g_value_get_object (value);
|
|
|
|
if (! prop_object)
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
|
|
gimp_config_iface = GIMP_GET_CONFIG_INTERFACE (prop_object);
|
|
|
|
if (! gimp_config_iface)
|
|
return gimp_config_deserialize_any (value, prop_spec, scanner);
|
|
|
|
if (! gimp_config_iface->deserialize (prop_object,
|
|
scanner, nest_level + 1, NULL))
|
|
return G_TOKEN_NONE;
|
|
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
}
|
|
|
|
static GTokenType
|
|
gimp_config_deserialize_value_array (GValue *value,
|
|
GObject *object,
|
|
GParamSpec *prop_spec,
|
|
GScanner *scanner)
|
|
{
|
|
GParamSpecValueArray *array_spec;
|
|
GValueArray *array;
|
|
GValue array_value = { 0, };
|
|
gint n_values;
|
|
GTokenType token;
|
|
gint i;
|
|
|
|
array_spec = G_PARAM_SPEC_VALUE_ARRAY (prop_spec);
|
|
|
|
if (! gimp_scanner_parse_int (scanner, &n_values))
|
|
return G_TOKEN_INT;
|
|
|
|
array = g_value_array_new (n_values);
|
|
|
|
for (i = 0; i < n_values; i++)
|
|
{
|
|
g_value_init (&array_value, array_spec->element_spec->value_type);
|
|
|
|
token = gimp_config_deserialize_value (&array_value,
|
|
object,
|
|
array_spec->element_spec,
|
|
scanner);
|
|
|
|
if (token == G_TOKEN_RIGHT_PAREN)
|
|
g_value_array_append (array, &array_value);
|
|
|
|
g_value_unset (&array_value);
|
|
|
|
if (token != G_TOKEN_RIGHT_PAREN)
|
|
return token;
|
|
}
|
|
|
|
g_value_set_boxed_take_ownership (value, array);
|
|
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
}
|
|
|
|
static GTokenType
|
|
gimp_config_deserialize_any (GValue *value,
|
|
GParamSpec *prop_spec,
|
|
GScanner *scanner)
|
|
{
|
|
GValue src = { 0, };
|
|
|
|
if (!g_value_type_transformable (G_TYPE_STRING, prop_spec->value_type))
|
|
{
|
|
g_warning ("%s: %s can not be transformed from a string",
|
|
G_STRLOC, g_type_name (prop_spec->value_type));
|
|
return G_TOKEN_NONE;
|
|
}
|
|
|
|
if (g_scanner_peek_next_token (scanner) != G_TOKEN_IDENTIFIER)
|
|
return G_TOKEN_IDENTIFIER;
|
|
|
|
g_scanner_get_next_token (scanner);
|
|
|
|
g_value_init (&src, G_TYPE_STRING);
|
|
g_value_set_static_string (&src, scanner->value.v_identifier);
|
|
g_value_transform (&src, value);
|
|
g_value_unset (&src);
|
|
|
|
return G_TOKEN_RIGHT_PAREN;
|
|
}
|
|
|
|
static inline gboolean
|
|
scanner_string_utf8_valid (GScanner *scanner,
|
|
const gchar *token_name)
|
|
{
|
|
if (g_utf8_validate (scanner->value.v_string, -1, NULL))
|
|
return TRUE;
|
|
|
|
g_scanner_error (scanner,
|
|
_("value for token %s is not a valid UTF-8 string"),
|
|
token_name);
|
|
|
|
return FALSE;
|
|
}
|