mirror of https://github.com/GNOME/gimp.git
184 lines
3.6 KiB
C
184 lines
3.6 KiB
C
/* parasite.c
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* Copyright (C) 1998 Jay Cox <jaycox@earthlink.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "parasiteP.h"
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#include "parasite.h"
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#include <stdio.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 <string.h>
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#include <glib.h>
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#ifdef G_OS_WIN32
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#include <process.h> /* For _getpid() */
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#endif
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#ifdef DEBUG
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static void
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parasite_print (Parasite *p)
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{
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if (p == NULL)
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{
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printf("(pid %d)attempt to print a null parasite\n", getpid());
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return;
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}
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printf("(pid %d), parasite: %p\n", getpid(), p);
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if (p->name)
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printf("\tname: %s\n", p->name);
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else
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printf("\tname: NULL\n");
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printf("\tflags: %d\n", p->flags);
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printf("\tsize: %d\n", p->size);
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if (p->size > 0)
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printf("\tdata: %p\n", p->data);
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}
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#endif
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Parasite *
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parasite_new (const gchar *name,
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guint32 flags,
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guint32 size,
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const gpointer data)
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{
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Parasite *p;
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p = g_new (Parasite, 1);
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if (name)
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p->name = g_strdup (name);
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else
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{
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g_free (p);
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return NULL;
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}
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p->flags = (flags & 0xFF);
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p->size = size;
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if (size)
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p->data = g_memdup (data, size);
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else
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p->data = NULL;
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return p;
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}
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void
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parasite_free (Parasite *parasite)
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{
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if (parasite == NULL)
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return;
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if (parasite->name)
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g_free (parasite->name);
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if (parasite->data)
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g_free (parasite->data);
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g_free (parasite);
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}
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int
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parasite_is_type (const Parasite *parasite,
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const gchar *name)
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{
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if (!parasite || !parasite->name)
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return FALSE;
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return (strcmp(parasite->name, name) == 0);
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}
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Parasite *
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parasite_copy (const Parasite *parasite)
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{
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if (parasite == NULL)
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return NULL;
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return parasite_new (parasite->name, parasite->flags,
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parasite->size, parasite->data);
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}
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gboolean
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parasite_compare (const Parasite *a,
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const Parasite *b)
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{
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if (a && b && a->name && b->name && strcmp(a->name, b->name) == 0 &&
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a->flags == b->flags && a->size == b->size )
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{
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if (a->data == NULL && b->data == NULL)
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return TRUE;
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else if (a->data && b->data && memcmp(a->data, b->data, a->size) == 0)
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return TRUE;
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}
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return FALSE;
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}
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gulong
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parasite_flags (const Parasite *p)
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{
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if (p == NULL)
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return 0;
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return p->flags;
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}
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gboolean
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parasite_is_persistent (const Parasite *p)
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{
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if (p == NULL)
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return FALSE;
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return (p->flags & PARASITE_PERSISTENT);
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}
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gboolean
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parasite_is_undoable (const Parasite *p)
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{
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if (p == NULL)
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return FALSE;
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return (p->flags & PARASITE_UNDOABLE);
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}
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gboolean
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parasite_has_flag (const Parasite *p,
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gulong flag)
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{
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if (p == NULL)
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return FALSE;
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return (p->flags & flag);
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}
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const gchar *
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parasite_name (const Parasite *p)
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{
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if (p)
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return p->name;
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return NULL;
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}
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void *
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parasite_data (const Parasite *p)
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{
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if (p)
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return p->data;
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return NULL;
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}
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glong
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parasite_data_size (const Parasite *p)
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{
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if (p)
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return p->size;
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return 0;
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}
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