gimp/plug-ins/script-fu/libscriptfu/script-fu-version.c

75 lines
2.3 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <libgimp/gimp.h>
#include "script-fu-version.h"
/* Flag indicating version 3 binding to the PDB.
* while marshalling return values from PDB:
* - not wrap solitary values in list
* - bind c boolean to scheme truth values
*
* Set by a script calling (script-fu-use-v3).
* Cleared by a script calling (script-fu-use-v2).
*
* Initial, default state of all ScriptFu tools is interpret v2 dialect.
*
* New-style scripts call (script-fu-use-v3) at top level.
* Ends with process termination of the interpreter.
*
* Old-style scripts call in run function, but this is discouraged.
* Ends after extension-script-fu finishes interpretation of current command.
*
* Affects interpretation for the duration of the current interpreter process.
* !!! All script interpreted subsequently in the current process,
* especially in called PDB procedures that are themselves scripts,
* must use v3 binding to PDB.
* Note most old script plugins in the PDB use v2 that is affected by this flag.
* Note a very few routines in script-fu-util.scm call the PDB using v2 binding.
* So a script should not call them while this flag is set.
*/
static gboolean language_version_is_3 = FALSE;
void
begin_interpret_v3_dialect (void)
{
language_version_is_3 = TRUE;
}
void
begin_interpret_v2_dialect (void)
{
language_version_is_3 = FALSE;
}
/* the default dialect is v2 */
void
begin_interpret_default_dialect (void)
{
/* the default dialect is v2 */
begin_interpret_v2_dialect ();
}
gboolean
is_interpret_v3_dialect (void)
{
return language_version_is_3;
}