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gimp/app/core/gimpparasitelist.c

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/* parasitelist.c: Copyright 1998 Jay Cox <jaycox@earthlink.net>
*
* 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 <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib-object.h>
#ifdef G_OS_WIN32
#include <io.h>
#endif
#include "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "config/gimpconfig.h"
#include "config/gimpconfigwriter.h"
#include "config/gimpscanner.h"
#include "gimp-utils.h"
#include "gimpmarshal.h"
#include "gimpparasitelist.h"
enum
{
ADD,
REMOVE,
LAST_SIGNAL
};
static void gimp_parasite_list_class_init (GimpParasiteListClass *klass);
static void gimp_parasite_list_init (GimpParasiteList *list);
static void gimp_parasite_list_finalize (GObject *object);
static gint64 gimp_parasite_list_get_memsize (GimpObject *object,
gint64 *gui_size);
static void gimp_parasite_list_config_iface_init (gpointer iface,
gpointer iface_data);
static gboolean gimp_parasite_list_serialize (GimpConfig *list,
GimpConfigWriter *writer,
gpointer data);
static gboolean gimp_parasite_list_deserialize (GimpConfig *list,
GScanner *scanner,
gint nest_level,
gpointer data);
static void parasite_serialize (const gchar *key,
GimpParasite *parasite,
GimpConfigWriter *writer);
static void parasite_copy (const gchar *key,
GimpParasite *parasite,
GimpParasiteList *list);
static gboolean parasite_free (const gchar *key,
GimpParasite *parasite,
gpointer unused);
static void parasite_count_if_persistent (const gchar *key,
GimpParasite *parasite,
gint *count);
static guint parasite_list_signals[LAST_SIGNAL] = { 0 };
static GimpObjectClass *parent_class = NULL;
static const gchar *parasite_symbol = "parasite";
GType
gimp_parasite_list_get_type (void)
{
static GType list_type = 0;
if (! list_type)
{
static const GTypeInfo list_info =
{
sizeof (GimpParasiteListClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_parasite_list_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpParasiteList),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_parasite_list_init,
};
static const GInterfaceInfo list_iface_info =
{
gimp_parasite_list_config_iface_init,
NULL, /* iface_finalize */
NULL /* iface_data */
};
list_type = g_type_register_static (GIMP_TYPE_OBJECT,
"GimpParasiteList",
&list_info, 0);
g_type_add_interface_static (list_type, GIMP_TYPE_CONFIG,
&list_iface_info);
}
return list_type;
}
static void
gimp_parasite_list_class_init (GimpParasiteListClass *klass)
{
GObjectClass *object_class;
GimpObjectClass *gimp_object_class;
object_class = G_OBJECT_CLASS (klass);
gimp_object_class = GIMP_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
parasite_list_signals[ADD] =
g_signal_new ("add",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpParasiteListClass, add),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
parasite_list_signals[REMOVE] =
g_signal_new ("remove",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpParasiteListClass, remove),
NULL, NULL,
gimp_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
object_class->finalize = gimp_parasite_list_finalize;
gimp_object_class->get_memsize = gimp_parasite_list_get_memsize;
klass->add = NULL;
klass->remove = NULL;
}
static void
gimp_parasite_list_config_iface_init (gpointer iface,
gpointer iface_data)
{
GimpConfigInterface *config_iface = (GimpConfigInterface *) iface;
config_iface->serialize = gimp_parasite_list_serialize;
config_iface->deserialize = gimp_parasite_list_deserialize;
}
static void
gimp_parasite_list_init (GimpParasiteList *list)
{
list->table = NULL;
}
static void
gimp_parasite_list_finalize (GObject *object)
{
GimpParasiteList *list = GIMP_PARASITE_LIST (object);
if (list->table)
{
g_hash_table_foreach_remove (list->table, (GHRFunc) parasite_free, NULL);
g_hash_table_destroy (list->table);
list->table = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_parasite_list_get_memsize_foreach (gpointer key,
gpointer p,
gpointer m)
{
GimpParasite *parasite;
gint64 *memsize;
parasite = (GimpParasite *) p;
memsize = (gint64 *) m;
*memsize += (sizeof (GimpParasite) +
strlen (parasite->name) + 1 +
parasite->size);
}
static gint64
gimp_parasite_list_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpParasiteList *list;
gint64 memsize = 0;
list = GIMP_PARASITE_LIST (object);
if (list->table)
{
memsize += gimp_g_hash_table_get_memsize (list->table);
g_hash_table_foreach (list->table,
gimp_parasite_list_get_memsize_foreach,
&memsize);
}
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static gboolean
gimp_parasite_list_serialize (GimpConfig *list,
GimpConfigWriter *writer,
gpointer data)
{
if (GIMP_PARASITE_LIST (list)->table)
g_hash_table_foreach (GIMP_PARASITE_LIST (list)->table,
(GHFunc) parasite_serialize,
writer);
return TRUE;
}
static gboolean
gimp_parasite_list_deserialize (GimpConfig *list,
GScanner *scanner,
gint nest_level,
gpointer data)
{
GTokenType token;
g_scanner_scope_add_symbol (scanner, 0,
parasite_symbol, (gpointer) parasite_symbol);
token = G_TOKEN_LEFT_PAREN;
while (g_scanner_peek_next_token (scanner) == token)
{
token = g_scanner_get_next_token (scanner);
switch (token)
{
case G_TOKEN_LEFT_PAREN:
token = G_TOKEN_SYMBOL;
break;
case G_TOKEN_SYMBOL:
if (scanner->value.v_symbol == parasite_symbol)
{
gchar *parasite_name = NULL;
gint parasite_flags = 0;
gchar *parasite_data = NULL;
GimpParasite *parasite;
token = G_TOKEN_STRING;
if (g_scanner_peek_next_token (scanner) != token)
break;
if (! gimp_scanner_parse_string (scanner, &parasite_name))
break;
token = G_TOKEN_INT;
if (g_scanner_peek_next_token (scanner) != token)
goto cleanup;
if (! gimp_scanner_parse_int (scanner, &parasite_flags))
goto cleanup;
token = G_TOKEN_STRING;
if (g_scanner_peek_next_token (scanner) != token)
goto cleanup;
if (! gimp_scanner_parse_string (scanner, &parasite_data))
goto cleanup;
parasite = gimp_parasite_new (parasite_name,
parasite_flags,
strlen (parasite_data),
parasite_data);
gimp_parasite_list_add (GIMP_PARASITE_LIST (list),
parasite); /* adds a copy */
gimp_parasite_free (parasite);
token = G_TOKEN_RIGHT_PAREN;
g_free (parasite_data);
cleanup:
g_free (parasite_name);
}
break;
case G_TOKEN_RIGHT_PAREN:
token = G_TOKEN_LEFT_PAREN;
break;
default: /* do nothing */
break;
}
}
return gimp_config_deserialize_return (scanner, token, nest_level);
}
GimpParasiteList *
gimp_parasite_list_new (void)
{
GimpParasiteList *list;
list = g_object_new (GIMP_TYPE_PARASITE_LIST, NULL);
return list;
}
GimpParasiteList *
gimp_parasite_list_copy (const GimpParasiteList *list)
{
GimpParasiteList *newlist;
g_return_val_if_fail (GIMP_IS_PARASITE_LIST (list), NULL);
newlist = gimp_parasite_list_new ();
if (list->table)
g_hash_table_foreach (list->table, (GHFunc) parasite_copy, newlist);
return newlist;
}
void
gimp_parasite_list_add (GimpParasiteList *list,
GimpParasite *parasite)
{
g_return_if_fail (GIMP_IS_PARASITE_LIST (list));
g_return_if_fail (parasite != NULL);
g_return_if_fail (parasite->name != NULL);
if (list->table == NULL)
list->table = g_hash_table_new (g_str_hash, g_str_equal);
gimp_parasite_list_remove (list, parasite->name);
parasite = gimp_parasite_copy (parasite);
g_hash_table_insert (list->table, parasite->name, parasite);
g_signal_emit (list, parasite_list_signals[ADD], 0, parasite);
}
void
gimp_parasite_list_remove (GimpParasiteList *list,
const gchar *name)
{
GimpParasite *parasite;
g_return_if_fail (GIMP_IS_PARASITE_LIST (list));
if (list->table)
{
parasite = gimp_parasite_list_find (list, name);
if (parasite)
{
g_hash_table_remove (list->table, name);
g_signal_emit (list, parasite_list_signals[REMOVE], 0, parasite);
gimp_parasite_free (parasite);
}
}
}
gint
gimp_parasite_list_length (GimpParasiteList *list)
{
g_return_val_if_fail (GIMP_IS_PARASITE_LIST (list), 0);
if (! list->table)
return 0;
return g_hash_table_size (list->table);
}
gint
gimp_parasite_list_persistent_length (GimpParasiteList *list)
{
gint len = 0;
g_return_val_if_fail (GIMP_IS_PARASITE_LIST (list), 0);
if (!list->table)
return 0;
gimp_parasite_list_foreach (list,
(GHFunc) parasite_count_if_persistent, &len);
return len;
}
void
gimp_parasite_list_foreach (GimpParasiteList *list,
GHFunc function,
gpointer user_data)
{
g_return_if_fail (GIMP_IS_PARASITE_LIST (list));
if (!list->table)
return;
g_hash_table_foreach (list->table, function, user_data);
}
GimpParasite *
gimp_parasite_list_find (GimpParasiteList *list,
const gchar *name)
{
g_return_val_if_fail (GIMP_IS_PARASITE_LIST (list), NULL);
if (list->table)
return (GimpParasite *) g_hash_table_lookup (list->table, name);
else
return NULL;
}
static void
parasite_serialize (const gchar *key,
GimpParasite *parasite,
GimpConfigWriter *writer)
{
GString *str;
const gchar *data;
guint32 len;
if (! gimp_parasite_is_persistent (parasite))
return;
gimp_config_writer_open (writer, parasite_symbol);
str = g_string_sized_new (64);
g_string_printf (str, "\"%s\" %lu \"",
gimp_parasite_name (parasite),
gimp_parasite_flags (parasite));
/*
* the current methodology is: never move the parasiterc from one
* system to another. If you want to do this you should probably
* write out parasites which contain any non-alphanumeric(+some)
* characters as \xHH sequences altogether.
*/
data = (const gchar *) gimp_parasite_data (parasite);
for (len = gimp_parasite_data_size (parasite); len > 0; len--, data++)
{
switch (*data)
{
case '\\': g_string_append_len (str, "\\\\", 2); break;
case '\0': g_string_append_len (str, "\\0" , 2); break;
case '"' : g_string_append_len (str, "\\\"", 2); break;
/* disabled, not portable! */
/* case '\n': fputs ("\\n", fp); break;*/
/* case '\r': fputs ("\\r", fp); break;*/
case 26 : g_string_append_len (str, "\\z", 2); break;
default : g_string_append_c (str, *data);
break;
}
}
g_string_append (str, "\"");
gimp_config_writer_print (writer, str->str, str->len);
g_string_free (str, TRUE);
gimp_config_writer_close (writer);
gimp_config_writer_linefeed (writer);
}
static void
parasite_copy (const gchar *key,
GimpParasite *parasite,
GimpParasiteList *list)
{
gimp_parasite_list_add (list, parasite);
}
static gboolean
parasite_free (const gchar *key,
GimpParasite *parasite,
gpointer unused)
{
gimp_parasite_free (parasite);
return TRUE;
}
static void
parasite_count_if_persistent (const gchar *key,
GimpParasite *parasite,
gint *count)
{
if (gimp_parasite_is_persistent (parasite))
*count = *count + 1;
}
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