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gimp/app/config/gimpconfig-deserialize.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Object properties deserialization routines
* Copyright (C) 2001 Sven Neumann <sven@gimp.org>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <glib-object.h>
#include "gimpconfig.h"
#include "gimpconfig-deserialize.h"
#include "gimpconfig-substitute.h"
#include "gimpconfig-types.h"
#include "libgimp/gimpintl.h"
/*
* All functions return G_TOKEN_RIGHT_PAREN on success,
* the GTokenType they would have expected but didn't get
* or G_TOKEN_NONE if they got the expected token but
* couldn't parse it.
*/
static GTokenType gimp_config_deserialize_unknown (GObject *object,
GScanner *scanner);
static GTokenType gimp_config_deserialize_property (GObject *object,
GScanner *scanner);
static GTokenType gimp_config_deserialize_fundamental (GValue *value,
GParamSpec *prop_spec,
GScanner *scanner);
static GTokenType gimp_config_deserialize_enum (GValue *value,
GParamSpec *prop_spec,
GScanner *scanner);
static GTokenType gimp_config_deserialize_memsize (GValue *value,
GParamSpec *prop_spec,
GScanner *scanner);
static GTokenType gimp_config_deserialize_path (GValue *value,
GObject *object,
GParamSpec *prop_spec,
GScanner *scanner);
static GTokenType gimp_config_deserialize_any (GValue *value,
GParamSpec *prop_spec,
GScanner *scanner);
static inline gboolean scanner_string_utf8_valid (GScanner *scanner,
const gchar *token_name);
gboolean
gimp_config_deserialize_properties (GObject *object,
GScanner *scanner,
gboolean store_unknown_tokens)
{
GObjectClass *klass;
GParamSpec **property_specs;
guint n_property_specs;
guint i;
guint scope_id;
guint old_scope_id;
GTokenType token;
GTokenType next;
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
klass = G_OBJECT_GET_CLASS (object);
property_specs = g_object_class_list_properties (klass, &n_property_specs);
if (!property_specs)
return TRUE;
scope_id = g_quark_from_static_string ("gimp_config_deserialize_properties");
old_scope_id = g_scanner_set_scope (scanner, scope_id);
for (i = 0; i < n_property_specs; i++)
{
GParamSpec *prop_spec = property_specs[i];
if (prop_spec->flags & G_PARAM_READWRITE)
{
g_scanner_scope_add_symbol (scanner, scope_id,
prop_spec->name, prop_spec);
}
}
g_free (property_specs);
token = G_TOKEN_LEFT_PAREN;
do
{
next = g_scanner_peek_next_token (scanner);
if (next != token &&
! (store_unknown_tokens &&
token == G_TOKEN_SYMBOL && next == G_TOKEN_IDENTIFIER))
{
break;
}
token = g_scanner_get_next_token (scanner);
switch (token)
{
case G_TOKEN_LEFT_PAREN:
token = G_TOKEN_SYMBOL;
break;
case G_TOKEN_IDENTIFIER:
token = gimp_config_deserialize_unknown (object, scanner);
break;
case G_TOKEN_SYMBOL:
token = gimp_config_deserialize_property (object, scanner);
break;
case G_TOKEN_RIGHT_PAREN:
token = G_TOKEN_LEFT_PAREN;
break;
default: /* do nothing */
break;
}
}
while (token != G_TOKEN_EOF);
if (token != G_TOKEN_LEFT_PAREN && token != G_TOKEN_NONE)
{
g_scanner_get_next_token (scanner);
g_scanner_unexp_token (scanner, token, NULL, NULL, NULL,
_("fatal parse error"), TRUE);
}
g_scanner_set_scope (scanner, old_scope_id);
return (token == G_TOKEN_EOF);
}
static GTokenType
gimp_config_deserialize_unknown (GObject *object,
GScanner *scanner)
{
gchar *key;
if (g_scanner_peek_next_token (scanner) != G_TOKEN_STRING)
return G_TOKEN_STRING;
key = g_strdup (scanner->value.v_identifier);
g_scanner_get_next_token (scanner);
if (!scanner_string_utf8_valid (scanner, key))
{
g_free (key);
return G_TOKEN_NONE;
}
gimp_config_add_unknown_token (object, key, scanner->value.v_string);
g_free (key);
return G_TOKEN_RIGHT_PAREN;
}
static GTokenType
gimp_config_deserialize_property (GObject *object,
GScanner *scanner)
{
GParamSpec *prop_spec;
GTokenType token;
GValue value = { 0, };
prop_spec = G_PARAM_SPEC (scanner->value.v_symbol);
g_value_init (&value, prop_spec->value_type);
if (G_TYPE_FUNDAMENTAL (prop_spec->value_type) == G_TYPE_ENUM)
{
token = gimp_config_deserialize_enum (&value, prop_spec, scanner);
}
else if (G_TYPE_IS_FUNDAMENTAL (prop_spec->value_type))
{
token = gimp_config_deserialize_fundamental (&value, prop_spec, scanner);
}
else if (prop_spec->value_type == GIMP_TYPE_MEMSIZE)
{
token = gimp_config_deserialize_memsize (&value, prop_spec, scanner);
}
else if (prop_spec->value_type == GIMP_TYPE_PATH)
{
token = gimp_config_deserialize_path (&value,
object, prop_spec, scanner);
}
else /* This fallback will only work for value_types that */
{ /* can be transformed from a string value. */
token = gimp_config_deserialize_any (&value, prop_spec, scanner);
}
if (token == G_TOKEN_RIGHT_PAREN &&
g_scanner_peek_next_token (scanner) == token)
{
g_object_set_property (object, prop_spec->name, &value);
}
else
{
g_warning ("couldn't deserialize property %s::%s of type %s",
g_type_name (G_TYPE_FROM_INSTANCE (object)),
prop_spec->name,
g_type_name (prop_spec->value_type));
}
g_value_unset (&value);
return token;
}
static GTokenType
gimp_config_deserialize_fundamental (GValue *value,
GParamSpec *prop_spec,
GScanner *scanner)
{
GTokenType token;
switch (G_TYPE_FUNDAMENTAL (prop_spec->value_type))
{
case G_TYPE_STRING:
token = G_TOKEN_STRING;
break;
case G_TYPE_BOOLEAN:
token = G_TOKEN_IDENTIFIER;
break;
case G_TYPE_INT:
case G_TYPE_UINT:
case G_TYPE_LONG:
case G_TYPE_ULONG:
token = G_TOKEN_INT;
break;
case G_TYPE_FLOAT:
case G_TYPE_DOUBLE:
token = G_TOKEN_FLOAT;
break;
default:
token = G_TOKEN_NONE;
g_assert_not_reached ();
break;
}
if (g_scanner_peek_next_token (scanner) != token)
return token;
g_scanner_get_next_token (scanner);
switch (G_TYPE_FUNDAMENTAL (prop_spec->value_type))
{
case G_TYPE_STRING:
if (scanner_string_utf8_valid (scanner, prop_spec->name))
g_value_set_static_string (value, scanner->value.v_string);
else
return G_TOKEN_NONE;
break;
case G_TYPE_BOOLEAN:
if (! g_ascii_strcasecmp (scanner->value.v_identifier, "yes") ||
! g_ascii_strcasecmp (scanner->value.v_identifier, "true"))
g_value_set_boolean (value, TRUE);
else if (! g_ascii_strcasecmp (scanner->value.v_identifier, "no") ||
! g_ascii_strcasecmp (scanner->value.v_identifier, "false"))
g_value_set_boolean (value, FALSE);
else
{
/* don't translate 'yes' and 'no' */
g_scanner_warn
(scanner,
_("expected 'yes' or 'no' for boolean token %s, got '%s'"),
prop_spec->name, scanner->value.v_identifier);
return G_TOKEN_NONE;
}
break;
case G_TYPE_INT:
g_value_set_int (value, scanner->value.v_int);
break;
case G_TYPE_UINT:
g_value_set_uint (value, scanner->value.v_int);
break;
case G_TYPE_LONG:
g_value_set_int (value, scanner->value.v_int);
break;
case G_TYPE_ULONG:
g_value_set_uint (value, scanner->value.v_int);
break;
case G_TYPE_FLOAT:
g_value_set_float (value, scanner->value.v_float);
break;
case G_TYPE_DOUBLE:
g_value_set_double (value, scanner->value.v_float);
break;
default:
g_assert_not_reached ();
break;
}
return G_TOKEN_RIGHT_PAREN;
}
static GTokenType
gimp_config_deserialize_enum (GValue *value,
GParamSpec *prop_spec,
GScanner *scanner)
{
GEnumClass *enum_class;
GEnumValue *enum_value;
if (g_scanner_peek_next_token (scanner) != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
g_scanner_get_next_token (scanner);
enum_class = g_type_class_peek (G_VALUE_TYPE (value));
enum_value = g_enum_get_value_by_nick (G_ENUM_CLASS (enum_class),
scanner->value.v_identifier);
if (!enum_value)
enum_value = g_enum_get_value_by_name (G_ENUM_CLASS (enum_class),
scanner->value.v_identifier);
if (!enum_value)
{
g_scanner_warn (scanner,
_("invalid value '%s' for token %s"),
scanner->value.v_identifier, prop_spec->name);
return G_TOKEN_NONE;
}
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)
{
GTokenType token;
gchar *orig_cset_first = NULL;
gchar *orig_cset_nth = NULL;
orig_cset_first = scanner->config->cset_identifier_first;
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";
token = gimp_config_deserialize_any (value, prop_spec, scanner);
if (orig_cset_first)
scanner->config->cset_identifier_first = orig_cset_first;
if (orig_cset_nth)
scanner->config->cset_identifier_nth = orig_cset_nth;
return token;
}
static GTokenType
gimp_config_deserialize_path (GValue *value,
GObject *object,
GParamSpec *prop_spec,
GScanner *scanner)
{
gchar *path;
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;
path = gimp_config_substitute_path (object, scanner->value.v_string, TRUE);
if (!path)
return G_TOKEN_NONE;
g_value_set_string_take_ownership (value, path);
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_warn (scanner,
_("value for token %s is not a valid UTF-8 string"),
token_name);
return FALSE;
}
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