File: batch.c

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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.
 */

#include "config.h"

#include <string.h>
#include <stdlib.h>

#include <glib-object.h>

#include "core/core-types.h"

#include "base/base.h"

#include "core/gimp.h"

#include "batch.h"

#include "pdb/procedural_db.h"

#include "gimp-intl.h"


#define BATCH_DEFAULT_EVAL_PROC   "plug_in_script_fu_eval"


static gboolean  batch_exit_after_callback (Gimp        *gimp,
                                            gboolean     kill_it);
static void      batch_run_cmd             (Gimp        *gimp,
                                            const gchar *proc_name,
                                            ProcRecord  *proc,
                                            GimpRunMode  run_mode,
                                            const gchar *cmd);


void
batch_run (Gimp         *gimp,
           const gchar  *batch_interpreter,
           const gchar **batch_commands)
{
  gulong  exit_id;

  if (! batch_commands || ! batch_commands[0])
    return;

  exit_id = g_signal_connect_after (gimp, "exit",
                                    G_CALLBACK (batch_exit_after_callback),
                                    NULL);

  if (! batch_interpreter)
    {
      batch_interpreter = BATCH_DEFAULT_EVAL_PROC;

      g_printerr ("No batch interpreter specified, using the default '%s'.\n",
                  batch_interpreter);
    }

  /*  script-fu text console, hardcoded for backward compatibility  */

  if (strcmp (batch_interpreter, "plug_in_script_fu_eval") == 0 &&
      strcmp (batch_commands[0], "-") == 0)
    {
      const gchar *proc_name = "plug_in_script_fu_text_console";
      ProcRecord  *proc      = procedural_db_lookup (gimp, proc_name);

      if (proc)
        batch_run_cmd (gimp, proc_name, proc, GIMP_RUN_INTERACTIVE, NULL);
      else
        g_message (_("The batch interpreter '%s' is not available, "
                     "batch mode disabled."), proc_name);
    }
  else
    {
      ProcRecord *eval_proc = procedural_db_lookup (gimp, batch_interpreter);

      if (eval_proc)
        {
          gint i;

          for (i = 0; batch_commands[i]; i++)
            batch_run_cmd (gimp, batch_interpreter, eval_proc,
                           GIMP_RUN_NONINTERACTIVE, batch_commands[i]);
        }
      else
        {
          g_message (_("The batch interpreter '%s' is not available, "
                       "batch mode disabled."), batch_interpreter);
        }
    }

  g_signal_handler_disconnect (gimp, exit_id);
}


static gboolean
batch_exit_after_callback (Gimp     *gimp,
                           gboolean  kill_it)
{
  if (gimp->be_verbose)
    g_print ("EXIT: %s\n", G_STRLOC);

  /*  make sure that the swap file is removed before we quit */
  base_exit ();
  exit (EXIT_SUCCESS);

  return TRUE;
}

static void
batch_run_cmd (Gimp        *gimp,
               const gchar *proc_name,
               ProcRecord  *proc,
               GimpRunMode  run_mode,
	       const gchar *cmd)
{
  Argument *args;
  Argument *vals;
  gint      i;

  args = g_new0 (Argument, proc->num_args);
  for (i = 0; i < proc->num_args; i++)
    args[i].arg_type = proc->args[i].arg_type;

  args[0].value.pdb_int = run_mode;

  if (proc->num_args > 1)
    args[1].value.pdb_pointer = (gpointer) cmd;

  vals = procedural_db_execute (gimp,
                                gimp_get_user_context (gimp), NULL,
                                proc_name, args);

  switch (vals[0].value.pdb_int)
    {
    case GIMP_PDB_EXECUTION_ERROR:
      g_printerr ("batch command: experienced an execution error.\n");
      break;

    case GIMP_PDB_CALLING_ERROR:
      g_printerr ("batch command: experienced a calling error.\n");
      break;

    case GIMP_PDB_SUCCESS:
      g_printerr ("batch command: executed successfully.\n");
      break;
    }

  procedural_db_destroy_args (vals, proc->num_values);
  g_free (args);

  return;
}