gimp/libgimpbase/gimpparasite.c

205 lines
4.1 KiB
C

/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpparasite.c
* Copyright (C) 1998 Jay Cox <jaycox@earthlink.net>
*
* 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
* Library 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.
*/
#include "config.h"
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <glib-object.h>
#ifdef G_OS_WIN32
#include <process.h> /* For _getpid() */
#endif
#include "gimpbasetypes.h"
#include "gimpparasite.h"
#ifdef DEBUG
static void
gimp_parasite_print (GimpParasite *parasite)
{
if (parasite == NULL)
{
g_print ("pid %d: attempt to print a null parasite\n", getpid ());
return;
}
g_print ("pid %d: parasite: %p\n", getpid (), parasite);
if (parasite->name)
g_print ("\tname: %s\n", parasite->name);
else
g_print ("\tname: NULL\n");
g_print ("\tflags: %d\n", parasite->flags);
g_print ("\tsize: %d\n", parasite->size);
if (parasite->size > 0)
g_print ("\tdata: %p\n", parasite->data);
}
#endif
GimpParasite *
gimp_parasite_new (const gchar *name,
guint32 flags,
guint32 size,
gconstpointer data)
{
GimpParasite *parasite;
if (!name)
return NULL;
parasite = g_new (GimpParasite, 1);
parasite->name = g_strdup (name);
parasite->flags = (flags & 0xFF);
parasite->size = size;
if (size)
parasite->data = g_memdup (data, size);
else
parasite->data = NULL;
return parasite;
}
void
gimp_parasite_free (GimpParasite *parasite)
{
if (parasite == NULL)
return;
if (parasite->name)
g_free (parasite->name);
if (parasite->data)
g_free (parasite->data);
g_free (parasite);
}
gboolean
gimp_parasite_is_type (const GimpParasite *parasite,
const gchar *name)
{
if (!parasite || !parasite->name)
return FALSE;
return (strcmp (parasite->name, name) == 0);
}
GimpParasite *
gimp_parasite_copy (const GimpParasite *parasite)
{
if (parasite == NULL)
return NULL;
return gimp_parasite_new (parasite->name, parasite->flags,
parasite->size, parasite->data);
}
gboolean
gimp_parasite_compare (const GimpParasite *a,
const GimpParasite *b)
{
if (a && b &&
a->name && b->name &&
strcmp (a->name, b->name) == 0 &&
a->flags == b->flags &&
a->size == b->size)
{
if (a->data == NULL && b->data == NULL)
return TRUE;
else if (a->data && b->data && memcmp (a->data, b->data, a->size) == 0)
return TRUE;
}
return FALSE;
}
gulong
gimp_parasite_flags (const GimpParasite *parasite)
{
if (parasite == NULL)
return 0;
return parasite->flags;
}
gboolean
gimp_parasite_is_persistent (const GimpParasite *parasite)
{
if (parasite == NULL)
return FALSE;
return (parasite->flags & GIMP_PARASITE_PERSISTENT);
}
gboolean
gimp_parasite_is_undoable (const GimpParasite *parasite)
{
if (parasite == NULL)
return FALSE;
return (parasite->flags & GIMP_PARASITE_UNDOABLE);
}
gboolean
gimp_parasite_has_flag (const GimpParasite *parasite,
gulong flag)
{
if (parasite == NULL)
return FALSE;
return (parasite->flags & flag);
}
const gchar *
gimp_parasite_name (const GimpParasite *parasite)
{
if (parasite)
return parasite->name;
return NULL;
}
gconstpointer
gimp_parasite_data (const GimpParasite *parasite)
{
if (parasite)
return parasite->data;
return NULL;
}
glong
gimp_parasite_data_size (const GimpParasite *parasite)
{
if (parasite)
return parasite->size;
return 0;
}