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/* The GIMP -- an 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 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.
*/
#ifndef __PROCEDURAL_DB_H__
#define __PROCEDURAL_DB_H__
/* Procedural database types */
typedef enum
{
PDB_INT32,
PDB_INT16,
PDB_INT8,
PDB_FLOAT,
PDB_STRING,
PDB_INT32ARRAY,
PDB_INT16ARRAY,
PDB_INT8ARRAY,
PDB_FLOATARRAY,
PDB_STRINGARRAY,
PDB_COLOR,
PDB_REGION,
PDB_DISPLAY,
PDB_IMAGE,
PDB_LAYER,
PDB_CHANNEL,
PDB_DRAWABLE,
PDB_SELECTION,
PDB_BOUNDARY,
PDB_PATH,
PDB_STATUS,
PDB_END
} PDBArgType;
/* Error types */
typedef enum
{
PDB_EXECUTION_ERROR,
PDB_CALLING_ERROR,
PDB_PASS_THROUGH,
PDB_SUCCESS
} PDBStatusType;
/* Procedure types */
typedef enum
{
PDB_INTERNAL,
PDB_PLUGIN,
PDB_EXTENSION,
PDB_TEMPORARY
} PDBProcType;
/* Argument type */
typedef struct _Argument Argument;
struct _Argument
{
PDBArgType arg_type; /* argument type */
union _ArgValue
{
gint32 pdb_int; /* Integer type */
gdouble pdb_float; /* Floating point type */
gpointer pdb_pointer; /* Pointer type */
} value;
};
/* Argument marshalling procedures */
typedef Argument * (* ArgMarshal) (Argument *);
/* Execution types */
typedef struct _IntExec IntExec;
typedef struct _PlugInExec PlugInExec;
typedef struct _ExtExec ExtExec;
typedef struct _TempExec TempExec;
typedef struct _NetExec NetExec;
struct _IntExec
{
ArgMarshal marshal_func; /* Function called to marshal arguments */
};
struct _PlugInExec
{
gchar * filename; /* Where is the executable on disk? */
};
struct _ExtExec
{
gchar * filename; /* Where is the executable on disk? */
};
struct _TempExec
{
void * plug_in; /* Plug-in that registered this temp proc */
};
struct _NetExec
{
gchar * host; /* Host responsible for procedure execution */
gint32 port; /* Port on host to send data to */
};
/* Structure for a procedure argument */
typedef struct _ProcArg ProcArg;
struct _ProcArg
{
PDBArgType arg_type; /* Argument type (int, char, char *, etc) */
char * name; /* Argument name */
char * description; /* Argument description */
};
/* Structure for a procedure */
typedef struct _ProcRecord ProcRecord;
struct _ProcRecord
{
/* Procedure information */
gchar * name; /* Procedure name */
gchar * blurb; /* Short procedure description */
gchar * help; /* Detailed help instructions */
gchar * author; /* Author field */
gchar * copyright; /* Copyright field */
gchar * date; /* Date field */
/* Procedure type */
PDBProcType proc_type; /* Type of procedure--Internal, Plug-In, Extension */
/* Input arguments */
gint32 num_args; /* Number of procedure arguments */
ProcArg * args; /* Array of procedure arguments */
/* Output values */
gint32 num_values; /* Number of return values */
ProcArg * values; /* Array of return values */
/* Method of procedure execution */
union _ExecMethod
{
IntExec internal; /* Execution information for internal procs */
PlugInExec plug_in; /* ..................... for plug-ins */
ExtExec extension; /* ..................... for extensions */
TempExec temporary; /* ..................... for temp procs */
} exec_method;
};
/* External data */
extern ProcRecord procedural_db_dump_proc;
extern ProcRecord procedural_db_query_proc;
extern ProcRecord procedural_db_proc_info_proc;
extern ProcRecord procedural_db_proc_arg_proc;
extern ProcRecord procedural_db_proc_val_proc;
extern ProcRecord procedural_db_get_data_proc;
extern ProcRecord procedural_db_set_data_proc;
/* Functions */
void procedural_db_init (void);
void procedural_db_free (void);
void procedural_db_register (ProcRecord *);
void procedural_db_unregister (gchar *);
ProcRecord * procedural_db_lookup (gchar *);
Argument * procedural_db_execute (gchar *,
Argument *);
Argument * procedural_db_run_proc (gchar *,
gint *,
...);
Argument * procedural_db_return_args (ProcRecord *,
int);
void procedural_db_destroy_args (Argument *,
int);
#endif /* __PROCEDURAL_DB_H__ */
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