gimp/app/gimprc.c

/* 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 <stdlib.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif

#include <glib.h>

#include "app_procs.h"
#include "appenv.h"
#include "cursorutil.h"
#include "devices.h"
#include "errors.h"
#include "fileops.h"
#include "general.h"
#include "gimpparasite.h"
#include "gimprc.h"
#include "menus.h"
#include "plug_in.h"
#include "gimage.h"
#include "session.h"
#include "tools.h"

#include "libgimp/gimpenv.h"
#include "libgimp/gimputils.h"
#include "libgimp/gimpparasite.h"

#include "libgimp/gimpintl.h"


#define ERROR      0
#define DONE       1
#define OK         2
#define LOCALE_DEF 3
#define HELP_DEF   4

typedef enum
{
  TT_STRING,
  TT_PATH,
  TT_DOUBLE,
  TT_FLOAT,
  TT_INT,
  TT_BOOLEAN,
  TT_POSITION,
  TT_MEMSIZE,
  TT_IMAGETYPE,
  TT_INTERP,
  TT_XPREVSIZE,
  TT_XUNIT,
  TT_XPLUGIN,
  TT_XPLUGINDEF,
  TT_XMENUPATH,
  TT_XDEVICE,
  TT_XSESSIONINFO,
  TT_XUNITINFO,
  TT_XPARASITE,
  TT_XNAVPREVSIZE,
  TT_XHELPBROWSER,
  TT_XCURSORMODE,
  TT_XCOMMENT
} TokenType;

typedef struct _ParseFunc ParseFunc;

struct _ParseFunc
{
  gchar     *name;
  TokenType  type;
  gpointer   val1p;
  gpointer   val2p;
};

typedef struct _UnknownToken UnknownToken;

struct _UnknownToken
{
  gchar *token;
  gchar *value;
};


/*  global gimprc variables  */
gchar             *plug_in_path = NULL;
gchar             *temp_path = NULL;
gchar             *swap_path = NULL;
gchar             *brush_path = NULL;
gchar             *brush_vbr_path = NULL;
gchar             *default_brush = NULL;
gchar             *pattern_path = NULL;
gchar             *default_pattern = NULL;
gchar             *palette_path = NULL;
gchar             *default_palette = NULL;
gchar             *gradient_path = NULL;
gchar             *default_gradient = NULL;
gchar             *pluginrc_path = NULL;
gchar             *module_path = NULL;
guint              tile_cache_size = 33554432;  /* 32 MB */
gint               marching_speed = 300;   /* 300 ms */
gdouble            gamma_val = 1.0;
gint               transparency_type = 1;  /* Mid-Tone Checks */
gboolean           perfectmouse = FALSE;   /* off (fast and sloppy) */
gint               transparency_size = 1;  /* Medium sized */
gint               levels_of_undo = 2;     /* 2 levels of undo default */
gint               last_opened_size = 4;   /* 4 documents in the MRU list */
gint               min_colors = 144;       /* 6*6*4 */
gboolean           install_cmap = FALSE;
gint               cycled_marching_ants = 0;
gint               default_threshold = 15;
gboolean           stingy_memory_use = FALSE;
gboolean           allow_resize_windows = FALSE;
gboolean           no_cursor_updating = FALSE;
gint               preview_size = 32;
gint               nav_preview_size = 112;
gboolean           show_rulers = TRUE;
gboolean           show_statusbar = TRUE;
GimpUnit           default_units = GIMP_UNIT_INCH;
gboolean           auto_save = TRUE;
InterpolationType  interpolation_type = LINEAR_INTERPOLATION;
gboolean           confirm_on_close = TRUE;
gboolean           save_session_info = TRUE;
gboolean           save_device_status = FALSE;
gboolean           always_restore_session = TRUE;
gint               default_width = 256;
gint               default_height = 256;
gint               default_type = RGB;
gdouble            default_xresolution = 72.0;
gdouble            default_yresolution = 72.0;
GimpUnit           default_resolution_units = GIMP_UNIT_INCH;
gchar             *default_comment = NULL;
gboolean           default_dot_for_dot = TRUE;
gboolean           show_tips = TRUE;
gint               last_tip = -1;
gboolean           show_tool_tips = TRUE;
gdouble            monitor_xres = 72.0;
gdouble            monitor_yres = 72.0;
gboolean           using_xserver_resolution = FALSE;
gint               num_processors = 1;
gchar             *image_title_format = NULL;
gboolean           global_paint_options = FALSE;
gboolean           show_indicators = TRUE;
guint              max_new_image_size = 33554432;  /* 32 MB */
gint               thumbnail_mode = 1;
gboolean           trust_dirty_flag = FALSE;
gboolean           use_help = TRUE;
gboolean           nav_window_per_display = FALSE;
gboolean           info_window_follows_mouse = TRUE;
gint               help_browser = HELP_BROWSER_GIMP;
gint               cursor_mode = CURSOR_MODE_TOOL_ICON;

extern char * module_db_load_inhibit;

static gint get_next_token  (void);
static gint peek_next_token (void);
static gint parse_statement (void);

static gint parse_string             (gpointer val1p, gpointer val2p);
static gint parse_path               (gpointer val1p, gpointer val2p);
static gint parse_double             (gpointer val1p, gpointer val2p);
static gint parse_float              (gpointer val1p, gpointer val2p);
static gint parse_int                (gpointer val1p, gpointer val2p);
static gint parse_boolean            (gpointer val1p, gpointer val2p);
static gint parse_position           (gpointer val1p, gpointer val2p);
static gint parse_mem_size           (gpointer val1p, gpointer val2p);
static gint parse_image_type         (gpointer val1p, gpointer val2p);
static gint parse_interpolation_type (gpointer val1p, gpointer val2p);
static gint parse_preview_size       (gpointer val1p, gpointer val2p);
static gint parse_nav_preview_size   (gpointer val1p, gpointer val2p);
static gint parse_units              (gpointer val1p, gpointer val2p);
static gint parse_plug_in            (gpointer val1p, gpointer val2p);
static gint parse_plug_in_def        (gpointer val1p, gpointer val2p);
static gint parse_device             (gpointer val1p, gpointer val2p);
static gint parse_menu_path          (gpointer val1p, gpointer val2p);
static gint parse_session_info       (gpointer val1p, gpointer val2p);
static gint parse_unit_info          (gpointer val1p, gpointer val2p);
static gint parse_parasite           (gpointer val1p, gpointer val2p);
static gint parse_help_browser       (gpointer val1p, gpointer val2p);
static gint parse_cursor_mode        (gpointer val1p, gpointer val2p);

static gint parse_locale_def (PlugInDef      *plug_in_def);
static gint parse_help_def   (PlugInDef      *plug_in_def);
static gint parse_proc_def   (PlugInProcDef **proc_def);
static gint parse_proc_arg   (ProcArg        *arg);
static gint parse_unknown    (gchar          *token_sym);

       gchar *gimprc_value_to_str (gchar *name);
static gchar *value_to_str        (gchar *name);

static inline gchar * string_to_str             (gpointer val1p, gpointer val2p);
static inline gchar * path_to_str               (gpointer val1p, gpointer val2p);
static inline gchar * double_to_str             (gpointer val1p, gpointer val2p);
static inline gchar * float_to_str              (gpointer val1p, gpointer val2p);
static inline gchar * int_to_str                (gpointer val1p, gpointer val2p);
static inline gchar * boolean_to_str            (gpointer val1p, gpointer val2p);
static inline gchar * position_to_str           (gpointer val1p, gpointer val2p);
static inline gchar * mem_size_to_str           (gpointer val1p, gpointer val2p);
static inline gchar * image_type_to_str         (gpointer val1p, gpointer val2p);
static inline gchar * interpolation_type_to_str (gpointer val1p, gpointer val2p);
static inline gchar * preview_size_to_str       (gpointer val1p, gpointer val2p);
static inline gchar * nav_preview_size_to_str   (gpointer val1p, gpointer val2p);
static inline gchar * units_to_str              (gpointer val1p, gpointer val2p);
static inline gchar * help_browser_to_str       (gpointer val1p, gpointer val2p);
static inline gchar * cursor_mode_to_str        (gpointer val1p, gpointer val2p);
static inline gchar * comment_to_str            (gpointer val1p, gpointer val2p);

static gchar *transform_path           (gchar *path,  gboolean destroy);
static void   gimprc_set_token         (gchar *token, gchar *value);
static void   add_gimp_directory_token (gchar *gimp_dir);
#ifdef __EMX__
static void   add_x11root_token        (gchar *x11root);
#endif
static gchar *open_backup_file (gchar  *filename,
				gchar  *secondary_filename,
				gchar **name_used,
				FILE  **fp_new,
				FILE  **fp_old);

static ParseInfo  parse_info = { NULL };

static GList     *unknown_tokens = NULL;

static gint       cur_token;
static gint       next_token;
static gboolean   done;

static ParseFunc funcs[] =
{
  { "temp-path",                 TT_PATH,       &temp_path, NULL },
  { "swap-path",                 TT_PATH,       &swap_path, NULL },
  { "brush-path",                TT_PATH,       &brush_path, NULL },
  { "brush-vbr-path",            TT_PATH,       &brush_vbr_path, NULL },
  { "pattern-path",              TT_PATH,       &pattern_path, NULL },
  { "plug-in-path",              TT_PATH,       &plug_in_path, NULL },
  { "palette-path",              TT_PATH,       &palette_path, NULL },
  { "gradient-path",             TT_PATH,       &gradient_path, NULL },
  { "pluginrc-path",             TT_PATH,       &pluginrc_path, NULL },
  { "module-path",               TT_PATH,       &module_path, NULL },
  { "default-brush",             TT_STRING,     &default_brush, NULL },
  { "default-pattern",           TT_STRING,     &default_pattern, NULL },
  { "default-palette",           TT_STRING,     &default_palette, NULL },
  { "default-gradient",          TT_STRING,     &default_gradient, NULL },
  { "gamma-correction",          TT_DOUBLE,     &gamma_val, NULL },
  { "tile-cache-size",           TT_MEMSIZE,    &tile_cache_size, NULL },
  { "marching-ants-speed",       TT_INT,        &marching_speed, NULL },
  { "last-opened-size",          TT_INT,        &last_opened_size, NULL },
  { "undo-levels",               TT_INT,        &levels_of_undo, NULL },
  { "transparency-type",         TT_INT,        &transparency_type, NULL },
  { "perfect-mouse",             TT_BOOLEAN,    &perfectmouse, NULL },
  { "transparency-size",         TT_INT,        &transparency_size, NULL },
  { "min-colors",                TT_INT,        &min_colors, NULL },
  { "install-colormap",          TT_BOOLEAN,    &install_cmap, NULL },
  { "colormap-cycling",          TT_BOOLEAN,    &cycled_marching_ants, NULL },
  { "default-threshold",         TT_INT,        &default_threshold, NULL },
  { "stingy-memory-use",         TT_BOOLEAN,    &stingy_memory_use, NULL },
  { "allow-resize-windows",      TT_BOOLEAN,    &allow_resize_windows, NULL },
  { "dont-allow-resize-windows", TT_BOOLEAN,    NULL, &allow_resize_windows },
  { "cursor-updating",           TT_BOOLEAN,    NULL, &no_cursor_updating },
  { "no-cursor-updating",        TT_BOOLEAN,    &no_cursor_updating, NULL },
  { "preview-size",              TT_XPREVSIZE,  NULL, NULL },
  { "nav-preview-size",          TT_XNAVPREVSIZE,  NULL, NULL },
  { "show-rulers",               TT_BOOLEAN,    &show_rulers, NULL },
  { "dont-show-rulers",          TT_BOOLEAN,    NULL, &show_rulers },
  { "show-statusbar",            TT_BOOLEAN,    &show_statusbar, NULL },
  { "dont-show-statusbar",       TT_BOOLEAN,    NULL, &show_statusbar },
  { "default-units",             TT_XUNIT,      &default_units, NULL },
  { "auto-save",                 TT_BOOLEAN,    &auto_save, NULL },
  { "dont-auto-save",            TT_BOOLEAN,    NULL, &auto_save },
  { "interpolation-type",        TT_INTERP,     &interpolation_type, NULL },
  { "confirm-on-close",          TT_BOOLEAN,    &confirm_on_close, NULL },
  { "dont-confirm-on-close",     TT_BOOLEAN,    NULL, &confirm_on_close },
  { "save-session-info",         TT_BOOLEAN,    &save_session_info, NULL },
  { "dont-save-session-info",    TT_BOOLEAN,    NULL, &save_session_info},
  { "save-device-status",        TT_BOOLEAN,    &save_device_status, NULL },
  { "dont-save-device-status",   TT_BOOLEAN,    NULL, &save_device_status},
  { "always-restore-session",    TT_BOOLEAN,    &always_restore_session, NULL },
  { "show-tips",                 TT_BOOLEAN,    &show_tips, NULL },
  { "dont-show-tips",            TT_BOOLEAN,    NULL, &show_tips },
  { "last-tip-shown",            TT_INT,        &last_tip, NULL },
  { "show-tool-tips",            TT_BOOLEAN,    &show_tool_tips, NULL },
  { "dont-show-tool-tips",       TT_BOOLEAN,    NULL, &show_tool_tips },
  { "default-image-size",        TT_POSITION,   &default_width, &default_height },
  { "default-image-type",        TT_IMAGETYPE,  &default_type, NULL },
  { "default-xresolution",       TT_DOUBLE,     &default_xresolution, NULL },
  { "default-yresolution",       TT_DOUBLE,     &default_yresolution, NULL },
  { "default-resolution-units",  TT_XUNIT,      &default_resolution_units, NULL },
  { "default-comment",           TT_XCOMMENT,	&default_comment, NULL },
  { "default-dot-for-dot",       TT_BOOLEAN,	&default_dot_for_dot, NULL },
  { "plug-in",                   TT_XPLUGIN,    NULL, NULL },
  { "plug-in-def",               TT_XPLUGINDEF, NULL, NULL },
  { "menu-path",                 TT_XMENUPATH,  NULL, NULL },
  { "device",                    TT_XDEVICE,    NULL, NULL },
  { "session-info",              TT_XSESSIONINFO, NULL, NULL },
  { "unit-info",                 TT_XUNITINFO,  NULL, NULL },
  { "monitor-xresolution",       TT_DOUBLE,     &monitor_xres, NULL },
  { "monitor-yresolution",       TT_DOUBLE,     &monitor_yres, NULL },
  { "num-processors",            TT_INT,        &num_processors, NULL },
  { "image-title-format",        TT_STRING,     &image_title_format, NULL },
  { "parasite",                  TT_XPARASITE,  NULL, NULL },
  { "global-paint-options",      TT_BOOLEAN,    &global_paint_options, NULL },
  { "show-indicators",           TT_BOOLEAN,    &show_indicators, NULL },
  { "dont-show-indicators",      TT_BOOLEAN,    NULL, &show_indicators },
  { "no-global-paint-options",   TT_BOOLEAN,    NULL, &global_paint_options },
  { "module-load-inhibit",       TT_PATH,       &module_db_load_inhibit, NULL },
  { "max-new-image-size",        TT_MEMSIZE,    &max_new_image_size, NULL },
  { "thumbnail-mode",            TT_INT,        &thumbnail_mode, NULL },
  { "trust-dirty-flag",		 TT_BOOLEAN,	&trust_dirty_flag, NULL },
  { "dont-trust-dirty-flag",     TT_BOOLEAN,	NULL, &trust_dirty_flag },
  { "use-help",                  TT_BOOLEAN,    &use_help, NULL },
  { "dont-use-help",             TT_BOOLEAN,    NULL, &use_help },
  { "nav-window-per-display",    TT_BOOLEAN,    &nav_window_per_display, NULL },
  { "nav-window-follows-auto",   TT_BOOLEAN,    NULL, &nav_window_per_display },
  { "info-window-follows-mouse", TT_BOOLEAN,    &info_window_follows_mouse, NULL },
  { "info-window-per-display",   TT_BOOLEAN,    NULL, &info_window_follows_mouse },
  { "help-browser",              TT_XHELPBROWSER, &help_browser, NULL },
  { "cursor-mode",               TT_XCURSORMODE, &cursor_mode, NULL }
};
static int nfuncs = sizeof (funcs) / sizeof (funcs[0]);

static SessionInfo *session_infos[] =
{
  &toolbox_session_info,
  &lc_dialog_session_info,
  &info_dialog_session_info,
  &tool_options_session_info,
  &palette_session_info,
  &brush_select_session_info,
  &pattern_select_session_info,
  &gradient_select_session_info,
  &device_status_session_info,
  &error_console_session_info,
  &document_index_session_info
};
static gint nsession_infos = sizeof (session_infos) / sizeof (session_infos[0]);

extern gchar *alternate_gimprc;
extern gchar *alternate_system_gimprc;

#define DEFAULT_IMAGE_TITLE_FORMAT "%f-%p.%i (%t)"
#define DEFAULT_COMMENT            "Created with The GIMP"

static gchar *
gimp_system_rc_file (void)
{
  static gchar *value = NULL;

  if (value != NULL)
    return value;

  value = g_strconcat (gimp_sysconf_directory (), G_DIR_SEPARATOR_S,
		       "gimprc", NULL);
  return value;
}

gboolean
parse_buffers_init (void)
{
  if (!parse_info.buffer)
    {
      parse_info.buffer = g_new (gchar, 4096);
      parse_info.tokenbuf      = parse_info.buffer + 2048;
      parse_info.buffer_size   = 2048;
      parse_info.tokenbuf_size = 2048;

      return TRUE;
    }
  
  return FALSE;
}

static GList *
parse_add_directory_tokens (void)
{
  gchar *gimp_dir;

  gimp_dir = gimp_directory ();
  add_gimp_directory_token (gimp_dir);
#ifdef __EMX__
  add_x11root_token(getenv("X11ROOT"));
#endif
  /* the real output is unknown_tokens list !  */
  return (unknown_tokens); 
}

void
parse_gimprc (void)
{
  gchar *libfilename;
  gchar *filename;
  
  parse_add_directory_tokens ();

  if (alternate_system_gimprc != NULL) 
    libfilename = g_strdup (alternate_system_gimprc);
  else
    libfilename = g_strdup (gimp_system_rc_file ());
    
  parse_gimprc_file (libfilename);

  if (alternate_gimprc != NULL) 
    filename = g_strdup (alternate_gimprc);
  else 
    filename = gimp_personal_rc_file ("gimprc");

  if (g_strcasecmp (filename, libfilename) != 0)
    parse_gimprc_file (filename);

  g_free (filename);
  g_free (libfilename);
 
  if (!image_title_format)
    image_title_format = g_strdup (DEFAULT_IMAGE_TITLE_FORMAT);
  if (!default_comment)
    default_comment = g_strdup (DEFAULT_COMMENT);
}

gboolean
parse_absolute_gimprc_file (char *filename)
{
  gint status;

  parse_info.fp = fopen (filename, "rt");
  if (!parse_info.fp)
    return FALSE;

  if (be_verbose)
    g_print (_("parsing \"%s\"\n"), filename);

  cur_token = -1;
  next_token = -1;

  parse_info.position = -1;
  parse_info.linenum = 1;
  parse_info.charnum = 1;
  parse_info.inc_linenum = FALSE;
  parse_info.inc_charnum = FALSE;

  done = FALSE;
  while ((status = parse_statement ()) == OK)
    ;

  fclose (parse_info.fp);

  if (status == ERROR)
    {
      g_print (_("error parsing: \"%s\"\n"), filename);
      g_print (_("  at line %d column %d\n"), parse_info.linenum, parse_info.charnum);
      g_print (_("  unexpected token: %s\n"), token_sym);

      return FALSE;
    }

  return TRUE;
}

gboolean
parse_gimprc_file (gchar *filename)
{
  gchar *rfilename;
  gboolean parsed;

  if (!g_path_is_absolute (filename))
    {
      gchar *home_dir = g_get_home_dir ();
      gchar *home_dir_sep;

      if (home_dir != NULL)
	{
	  if (home_dir[strlen (home_dir) -1] != G_DIR_SEPARATOR)
	    home_dir_sep = G_DIR_SEPARATOR_S;
	  else
	    home_dir_sep = "";
	  rfilename = g_strdup_printf ("%s%s%s", home_dir, home_dir_sep,
				       filename);
	  parsed = parse_absolute_gimprc_file (rfilename);
	  g_free (rfilename);
	  return parsed;
	}
    }

  parsed = parse_absolute_gimprc_file (filename);
  return parsed;
}

static GList *
g_list_findstr (GList *list,
		gchar *str)
{
  for (; list; list = g_list_next (list))
    {
      if (! strcmp ((char *) list->data, str))
        break;
    }

  return list;
}

void
save_gimprc_strings (gchar *token,
		     gchar *value)
{
  gchar timestamp[40];  /* variables for parsing and updating gimprc */
  gchar *name;
  gchar tokname[51];
  FILE *fp_new;
  FILE *fp_old;
  gchar *cur_line;
  gchar *prev_line;
  gchar *error_msg;
  gboolean found = FALSE;
  gchar *personal_gimprc;
  gchar *str;
  
  UnknownToken *ut;    /* variables to modify unknown_tokens */
  UnknownToken *tmp;
  GList *list;

  
  g_assert(token != NULL);
  g_assert(value != NULL);
  
  /* get the name of the backup file, and the file pointers.  'name'
     is reused in another context later, disregard it here */
  personal_gimprc = gimp_personal_rc_file ("gimprc");
  error_msg = open_backup_file (personal_gimprc,
				gimp_system_rc_file (),
				&name, &fp_new, &fp_old);
  g_free (personal_gimprc);

  if (error_msg != NULL)
    {
      g_message (error_msg);
      g_free (error_msg);
      return;
    }

  strcpy (timestamp, "by GIMP on ");
  iso_8601_date_format (timestamp + strlen (timestamp), FALSE);

  /* copy the old .gimprc into the new one, modifying it as needed */
  prev_line = NULL;
  cur_line = g_new (char, 1024);
  while (!feof (fp_old))
    {
      if (!fgets (cur_line, 1024, fp_old))
	continue;
      
      /* special case: save lines starting with '#-' (added by GIMP) */
      if ((cur_line[0] == '#') && (cur_line[1] == '-'))
	{
	  if (prev_line != NULL)
	    {
	      fputs (prev_line, fp_new);
	      g_free (prev_line);
	    }
	  prev_line = g_strdup (cur_line);
	  continue;
	}

      /* see if the line contains something that we can use 
         and place that into 'name' if its found */
      if (find_token (cur_line, tokname, 50))
	{
	  /* check if that entry should be updated */
	  if (!g_strcasecmp(token, tokname)) /* if they match */
	    {
	      if (prev_line == NULL)
		{
		  fprintf (fp_new, "#- Next line commented out %s\n",
			   timestamp);
		  fprintf (fp_new, "# %s\n", cur_line);
		  fprintf (fp_new, "#- Next line added %s\n",
			   timestamp);
		}
	      else
		{
		  g_free (prev_line);
		  prev_line = NULL;
		  fprintf (fp_new, "#- Next line modified %s\n",
			   timestamp);
		}
	      str = gimp_strescape (value, NULL);
              if (!found)
                {
		  fprintf (fp_new, "(%s \"%s\")\n", token, str);
		}
              else 
		fprintf (fp_new, "#- (%s \"%s\")\n", token, str);
	      g_free (str);
	      found = TRUE;
	      continue;
	    } /* end if token and name match */
	} /* end if token is found */
    
      /* all lines that did not match the tests above are simply copied */
      if (prev_line != NULL)
	{
	  fputs (prev_line, fp_new);
	  g_free (prev_line);
	  prev_line = NULL;
	}
      fputs (cur_line, fp_new);
    } /* end of while(!feof) */

  g_free (cur_line);
  if (prev_line != NULL)
    g_free (prev_line);
  fclose (fp_old);

  /* append the options that were not in the old .gimprc */
  if (!found) 
    {
      fprintf (fp_new, "#- Next line added %s\n",
	       timestamp);
      str = gimp_strescape (value, NULL);
      fprintf (fp_new, "(%s \"%s\")\n\n", token, str);
      g_free (str);
    }

  /* update unknown_tokens to reflect new token value */
  ut = g_new (UnknownToken, 1);
  ut->token = g_strdup (token);
  ut->value = g_strdup (value);

  list = unknown_tokens;
  while (list)
    {
      tmp = (UnknownToken *) list->data;
      list = list->next;

      if (strcmp (tmp->token, ut->token) == 0)
	{
	  unknown_tokens = g_list_remove (unknown_tokens, tmp);
	  g_free (tmp->token);
	  g_free (tmp->value);
	  g_free (tmp);
	}
    }
  unknown_tokens = g_list_append (unknown_tokens, ut);

  fclose (fp_new);
}

void
save_gimprc (GList **updated_options,
	     GList **conflicting_options)
{
  gchar  timestamp[40];
  gchar *name;
  gchar  tokname[51];
  FILE  *fp_new;
  FILE  *fp_old;
  GList *option;
  gchar *cur_line;
  gchar *prev_line;
  gchar *str;
  gchar *error_msg;
  gchar *personal_gimprc;

  g_assert (updated_options != NULL);
  g_assert (conflicting_options != NULL);

  personal_gimprc = gimp_personal_rc_file ("gimprc");
  error_msg = open_backup_file (personal_gimprc,
				gimp_system_rc_file (),
				&name, &fp_new, &fp_old);
  g_free (personal_gimprc);

  if (error_msg != NULL)
    {
      g_message (error_msg);
      g_free (error_msg);
      return;
    }

  strcpy (timestamp, "by GIMP on ");
  iso_8601_date_format (timestamp + strlen (timestamp), FALSE);

  /* copy the old .gimprc into the new one, modifying it as needed */
  prev_line = NULL;
  cur_line = g_new (char, 1024);
  while (!feof (fp_old))
    {
      if (!fgets (cur_line, 1024, fp_old))
	continue;
      
      /* special case: save lines starting with '#-' (added by GIMP) */
      if ((cur_line[0] == '#') && (cur_line[1] == '-'))
	{
	  if (prev_line != NULL)
	    {
	      fputs (prev_line, fp_new);
	      g_free (prev_line);
	    }
	  prev_line = g_strdup (cur_line);
	  continue;
	}

      /* see if the line contains something that we can use */
      if (find_token (cur_line, tokname, 50))
	{
	  /* check if that entry should be updated */
	  option = g_list_findstr (*updated_options, tokname);
	  if (option != NULL)
	    {
	      if (prev_line == NULL)
		{
		  fprintf (fp_new, "#- Next line commented out %s\n",
			   timestamp);
		  fprintf (fp_new, "# %s\n", cur_line);
		  fprintf (fp_new, "#- Next line added %s\n",
			   timestamp);
		}
	      else
		{
		  g_free (prev_line);
		  prev_line = NULL;
		  fprintf (fp_new, "#- Next line modified %s\n",
			   timestamp);
		}
	      str = value_to_str (tokname);
	      fprintf (fp_new, "(%s %s)\n", tokname, str);
	      g_free (str);

	      *updated_options = g_list_remove_link (*updated_options, option);
	      *conflicting_options = g_list_concat (*conflicting_options,
						    option);
	      continue;
	    }

	  /* check if that entry should be commented out */
	  option = g_list_findstr (*conflicting_options, tokname);
	  if (option != NULL)
	    {
	      if (prev_line != NULL)
		{
		  g_free (prev_line);
		  prev_line = NULL;
		}
	      fprintf (fp_new, "#- Next line commented out %s\n",
		       timestamp);
	      fprintf (fp_new, "# %s\n", cur_line);
	      continue;
	    }
	}

      /* all lines that did not match the tests above are simply copied */
      if (prev_line != NULL)
	{
	  fputs (prev_line, fp_new);
	  g_free (prev_line);
	  prev_line = NULL;
	}
      fputs (cur_line, fp_new);

    }

  g_free (cur_line);
  if (prev_line != NULL)
    g_free (prev_line);
  fclose (fp_old);

  /* append the options that were not in the old .gimprc */
  option = *updated_options;
  while (option)
    {
      fprintf (fp_new, "#- Next line added %s\n",
	       timestamp);
      str = value_to_str ((char *) option->data);
      fprintf (fp_new, "(%s %s)\n\n", (char *) option->data, str);
      g_free (str);
      option = option->next;
    }
  fclose (fp_new);
}

static gint
get_next_token (void)
{
  if (next_token != -1)
    {
      cur_token = next_token;
      next_token = -1;
    }
  else
    {
      cur_token = get_token (&parse_info);
    }

  return cur_token;
}

static gint
peek_next_token (void)
{
  if (next_token == -1)
    next_token = get_token (&parse_info);

  return next_token;
}

static gint
parse_statement (void)
{
  gint token;
  gint i;

  token = peek_next_token ();
  if (!token)
    return DONE;
  if (token != TOKEN_LEFT_PAREN)
    return ERROR;
  token = get_next_token ();

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL))
    return ERROR;
  token = get_next_token ();

  for (i = 0; i < nfuncs; i++)
    if (strcmp (funcs[i].name, token_sym) == 0)
      switch (funcs[i].type)
	{
	case TT_STRING:
	  return parse_string (funcs[i].val1p, funcs[i].val2p);
	case TT_PATH:
	  return parse_path (funcs[i].val1p, funcs[i].val2p);
	case TT_DOUBLE:
	  return parse_double (funcs[i].val1p, funcs[i].val2p);
	case TT_FLOAT:
	  return parse_float (funcs[i].val1p, funcs[i].val2p);
	case TT_INT:
	  return parse_int (funcs[i].val1p, funcs[i].val2p);
	case TT_BOOLEAN:
	  return parse_boolean (funcs[i].val1p, funcs[i].val2p);
	case TT_POSITION:
	  return parse_position (funcs[i].val1p, funcs[i].val2p);
	case TT_MEMSIZE:
	  return parse_mem_size (funcs[i].val1p, funcs[i].val2p);
	case TT_IMAGETYPE:
	  return parse_image_type (funcs[i].val1p, funcs[i].val2p);
	case TT_INTERP:
	  return parse_interpolation_type (funcs[i].val1p, funcs[i].val2p);
	case TT_XPREVSIZE:
	  return parse_preview_size (funcs[i].val1p, funcs[i].val2p);
	case TT_XNAVPREVSIZE:
	  return parse_nav_preview_size (funcs[i].val1p, funcs[i].val2p);
	case TT_XUNIT:
	  return parse_units (funcs[i].val1p, funcs[i].val2p);
	case TT_XPLUGIN:
	  return parse_plug_in (funcs[i].val1p, funcs[i].val2p);
	case TT_XPLUGINDEF:
	  return parse_plug_in_def (funcs[i].val1p, funcs[i].val2p);
	case TT_XMENUPATH:
	  return parse_menu_path (funcs[i].val1p, funcs[i].val2p);
	case TT_XDEVICE:
	  return parse_device (funcs[i].val1p, funcs[i].val2p);
	case TT_XSESSIONINFO:
	  return parse_session_info (funcs[i].val1p, funcs[i].val2p);
	case TT_XUNITINFO:
	  return parse_unit_info (funcs[i].val1p, funcs[i].val2p);
	case TT_XPARASITE:
	  return parse_parasite (funcs[i].val1p, funcs[i].val2p);
	case TT_XHELPBROWSER:
	  return parse_help_browser (funcs[i].val1p, funcs[i].val2p);
	case TT_XCURSORMODE:
	  return parse_cursor_mode (funcs[i].val1p, funcs[i].val2p);
	case TT_XCOMMENT:
	  return parse_string (funcs[i].val1p, funcs[i].val2p);
	}

  return parse_unknown (token_sym);
}

static gint
parse_path (gpointer val1p,
	    gpointer val2p)
{
  gint    token;
  gchar **pathp;

  g_assert (val1p != NULL);
  pathp = (char **)val1p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();

  if (*pathp)
    g_free (*pathp);
  *pathp = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    {
      g_free (*pathp);
      *pathp = NULL;
      return ERROR;
    }
  token = get_next_token ();

  *pathp = transform_path (*pathp, TRUE);

  return OK;
}

static gint
parse_string (gpointer val1p,
	      gpointer val2p)
{
  gint    token;
  gchar **strp;

  g_assert (val1p != NULL);
  strp = (gchar **)val1p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();

  if (*strp)
    g_free (*strp);
  *strp = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    {
      g_free (*strp);
      *strp = NULL;
      return ERROR;
    }
  token = get_next_token ();

  return OK;
}

static gint
parse_double (gpointer val1p,
	      gpointer val2p)
{
  gint     token;
  gdouble *nump;

  g_assert (val1p != NULL);
  nump = (gdouble *)val1p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  *nump = token_num;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_float (gpointer val1p,
	     gpointer val2p)
{
  gint    token;
  gfloat *nump;

  g_assert (val1p != NULL);
  nump = (gfloat *)val1p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  *nump = token_num;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static int
parse_int (gpointer val1p,
	   gpointer val2p)
{
  gint token;
  gint *nump;

  g_assert (val1p != NULL);
  nump = (gint *)val1p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  *nump = token_num;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static int
parse_boolean (gpointer val1p,
	       gpointer val2p)
{
  gint  token;
  gint *boolp;

  /* The variable to be set should be passed in the first or second
   * pointer.  If the pointer is in val2p, then the opposite value is
   * stored in the pointer.  This is useful for "dont-xxx" or "no-xxx"
   * type of options.
   * If the expression to be parsed is written as "(option)" instead
   * of "(option yes)" or "(option no)", then the default value is
   * TRUE if the variable is passed in val1p, or FALSE if in val2p.
   */
  g_assert (val1p != NULL || val2p != NULL);
  if (val1p != NULL)
    boolp = (int *)val1p;
  else
    boolp = (int *)val2p;

  token = peek_next_token ();
  if (!token)
    return ERROR;
  switch (token)
    {
    case TOKEN_RIGHT_PAREN:
      *boolp = TRUE;
      break;
    case TOKEN_NUMBER:
      token = get_next_token ();
      *boolp = token_num;
      token = peek_next_token ();
      if (!token || (token != TOKEN_RIGHT_PAREN))
	return ERROR;
      break;
    case TOKEN_SYMBOL:
      token = get_next_token ();
      if (!strcmp (token_sym, "true") || !strcmp (token_sym, "on")
	  || !strcmp (token_sym, "yes"))
	*boolp = TRUE;
      else if (!strcmp (token_sym, "false") || !strcmp (token_sym, "off")
	       || !strcmp (token_sym, "no"))
	*boolp = FALSE;
      else
	return ERROR;
      token = peek_next_token ();
      if (!token || (token != TOKEN_RIGHT_PAREN))
	return ERROR;
      break;
    default:
      return ERROR;
    }

  if (val1p == NULL)
    *boolp = !*boolp;

  token = get_next_token ();

  return OK;
}

static gint
parse_position (gpointer val1p,
		gpointer val2p)
{
  gint  token;
  gint *xp;
  gint *yp;

  g_assert (val1p != NULL && val2p != NULL);
  xp = (int *)val1p;
  yp = (int *)val2p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  *xp = token_num;

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  *yp = token_num;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_mem_size (gpointer val1p,
		gpointer val2p)
{
  gint   suffix;
  gint   token;
  guint  mult;
  guint *sizep;

  g_assert (val1p != NULL);
  sizep = (guint *)val1p;

  token = peek_next_token ();
  if (!token || ((token != TOKEN_NUMBER) &&
		 (token != TOKEN_SYMBOL)))
    return ERROR;
  token = get_next_token ();

  if (token == TOKEN_NUMBER)
    {
      *sizep = token_num * 1024;
    }
  else
    {
      *sizep = atoi (token_sym);

      suffix = token_sym[strlen (token_sym) - 1];
      if ((suffix == 'm') || (suffix == 'M'))
	mult = 1024 * 1024;
      else if ((suffix == 'k') || (suffix == 'K'))
	mult = 1024;
      else if ((suffix == 'b') || (suffix == 'B'))
	mult = 1;
      else
	return FALSE;

      *sizep *= mult;
    }

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_image_type (gpointer val1p,
		  gpointer val2p)
{
  gint token;
  gint *typep;
  
  g_assert (val1p != NULL);
  typep = (int *)val1p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL))
    return ERROR;
  token = get_next_token ();
 
  if (!strcmp (token_sym, "rgb"))
    *typep = RGB;
  else if ((!strcmp (token_sym, "gray")) || (!strcmp (token_sym, "grey")))
    *typep = GRAY;
  else
    return ERROR;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_interpolation_type (gpointer val1p,
			  gpointer val2p)
{
  gint token;
  InterpolationType *typep;
  
  g_assert (val1p != NULL);
  typep = (InterpolationType *)val1p;

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL))
    return ERROR;
  token = get_next_token ();
 
  if (strcmp (token_sym, "nearest-neighbor") == 0)
    *typep = NEAREST_NEIGHBOR_INTERPOLATION;
  else if (strcmp (token_sym, "linear") == 0)
    *typep = LINEAR_INTERPOLATION;
  else if (strcmp (token_sym, "cubic") == 0)
    *typep = CUBIC_INTERPOLATION;
  else
    return ERROR;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_preview_size (gpointer val1p,
		    gpointer val2p)
{
  gint token;

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL && token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  if (token == TOKEN_SYMBOL)
    {
      if (strcmp (token_sym, "none") == 0)
	preview_size = 0;
      else if (strcmp (token_sym, "tiny") == 0)
	preview_size = 24;
      else if (strcmp (token_sym, "small") == 0)
	preview_size = 32;
      else if (strcmp (token_sym, "medium") == 0)
	preview_size = 48;
      else if (strcmp (token_sym, "large") == 0)
	preview_size = 64;
      else if (strcmp (token_sym, "huge") == 0)
	preview_size = 128;
      else
	preview_size = 0;
    }
  else if (token == TOKEN_NUMBER)
    preview_size = token_num;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_nav_preview_size (gpointer val1p,
			gpointer val2p)
{
  gint token;

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL && token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  if (token == TOKEN_SYMBOL)
    {
/*       if (strcmp (token_sym, "none") == 0) */
/* 	preview_size = 0; */
/*       else  */
      if (strcmp (token_sym, "small") == 0)
	nav_preview_size = 48;
      else if (strcmp (token_sym, "medium") == 0)
	nav_preview_size = 80;
      else if (strcmp (token_sym, "large") == 0)
	nav_preview_size = 112;
      else
	nav_preview_size = 112;
    }
  else if (token == TOKEN_NUMBER)
    nav_preview_size = token_num;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_units (gpointer val1p,
	     gpointer val2p)
{
  gint token;
  gint i;

  g_assert (val1p != NULL);

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL))
    return ERROR;
  token = get_next_token ();

  *((GimpUnit *) val1p) = GIMP_UNIT_INCH;
  for (i = GIMP_UNIT_INCH; i < gimp_unit_get_number_of_units (); i++)
    if (strcmp (token_sym, gimp_unit_get_identifier (i)) == 0)
      {
	*((GimpUnit *) val1p) = i;
	break;
      }

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_plug_in (gpointer val1p,
	       gpointer val2p)
{
  gchar *name;
  gchar *menu_path;
  gchar *accelerator;
  gint token;

  name = NULL;
  menu_path = NULL;
  accelerator = NULL;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();

  name = g_strdup (token_str);

  token = peek_next_token ();
  if (token == TOKEN_STRING)
    {
      menu_path = g_strdup (token_str);
      token = get_next_token ();
    }

  token = peek_next_token ();
  if (token == TOKEN_STRING)
    {
      accelerator = g_strdup (token_str);
      token = get_next_token ();
    }

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    {
      g_free (name);
      g_free (menu_path);
      g_free (accelerator);
      return ERROR;
    }
  token = get_next_token ();

  if (name && menu_path)
    plug_in_add (name, menu_path, accelerator);

  return OK;
}

static gint
parse_plug_in_def (gpointer val1p,
		   gpointer val2p)
{
  PlugInDef *plug_in_def;
  PlugInProcDef *proc_def;
  gint token;
  gint success;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();

  plug_in_def = plug_in_def_new (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    goto error;
  token = get_next_token ();

  plug_in_def->mtime = token_int;

  success = OK;
  while (success == OK)
    {
      success = parse_proc_def (&proc_def);
      if (success == OK)
	{
	  proc_def->mtime = plug_in_def->mtime;
	  proc_def->prog = g_strdup (plug_in_def->prog);
	  plug_in_def->proc_defs = g_slist_append (plug_in_def->proc_defs, proc_def);
	}
      else if (success == LOCALE_DEF)
	success = parse_locale_def (plug_in_def);
      else if (success == HELP_DEF)
	success = parse_help_def (plug_in_def);
    }

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    goto error;
  token = get_next_token ();

  plug_in_def_add (plug_in_def);

  return OK;

 error:
  g_message (_("error parsing pluginrc"));
  plug_in_def_free (plug_in_def, TRUE);

  return ERROR;
}

static gint
parse_locale_def (PlugInDef *plug_in_def)
{
  gint token;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();
      
  if (plug_in_def->locale_domain)
    g_free (plug_in_def->locale_domain);
  plug_in_def->locale_domain = g_strdup (token_str);
  
  token = peek_next_token ();
  if (token && token == TOKEN_STRING)
    {
      token = get_next_token ();
      if (plug_in_def->locale_path)
	g_free (plug_in_def->locale_path);
      plug_in_def->locale_path = g_strdup (token_str);

      token = peek_next_token ();
    }

  if (!token || token != TOKEN_RIGHT_PAREN)
    goto error;
  token = get_next_token ();

  return OK;

 error:
  g_free (plug_in_def->locale_domain);
  plug_in_def->locale_domain = NULL;
  g_free (plug_in_def->locale_path);
  plug_in_def->locale_path = NULL;

  return ERROR;
}

static gint
parse_help_def (PlugInDef *plug_in_def)
{
  gint token;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();

  if (plug_in_def->help_path)
    g_free (plug_in_def->help_path);
  plug_in_def->help_path = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || token != TOKEN_RIGHT_PAREN)
    goto error;
  token = get_next_token ();

  return OK;

 error:
  g_free (plug_in_def->help_path);
  plug_in_def->help_path = NULL;

  return ERROR;
}


static gint
parse_proc_def (PlugInProcDef **proc_def)
{
  PlugInProcDef *pd;
  gint token;
  gint i;

  token = peek_next_token ();
  if (!token || (token != TOKEN_LEFT_PAREN))
    return ERROR;
  token = get_next_token ();

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL))
    return ERROR;
  
  if ((strcmp ("locale-def", token_sym) == 0))
    {
      token = get_next_token ();
      return LOCALE_DEF;  /* it's a locale_def, let parse_locale_def do the rest */
    }
  if ((strcmp ("help-def", token_sym) == 0))
    {
      token = get_next_token ();
      return HELP_DEF;  /* it's a help_def, let parse_help_def do the rest */
    }
  else if (strcmp ("proc-def", token_sym) != 0)
    return ERROR;

  token = get_next_token ();

  pd = g_new0 (PlugInProcDef, 1);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  pd->db_info.name = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    goto error;
  token = get_next_token ();

  pd->db_info.proc_type = token_int;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  pd->db_info.blurb = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  pd->db_info.help = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  pd->db_info.author = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  pd->db_info.copyright = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  pd->db_info.date = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  if (token_str[0] != '\0')
    pd->menu_path = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  if (token_str[0] != '\0')
    pd->extensions = g_strdup (token_str);
  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();
  if (token_str[0] != '\0')
    pd->prefixes = g_strdup (token_str);
  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();
  if (token_str[0] != '\0')
    pd->magics = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  if (token_str[0] != '\0')
    {
      pd->image_types = g_strdup (token_str);
      pd->image_types_val = plug_in_image_types_parse (token_str);
    }

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    goto error;
  token = get_next_token ();

  pd->db_info.num_args = token_int;
  pd->db_info.args = g_new0 (ProcArg, pd->db_info.num_args);

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    goto error;
  token = get_next_token ();

  pd->db_info.num_values = token_int;
  pd->db_info.values = NULL;
  if (pd->db_info.num_values > 0)
    pd->db_info.values = g_new (ProcArg, pd->db_info.num_values);

  for (i = 0; i < pd->db_info.num_args; i++)
    if (!parse_proc_arg (&pd->db_info.args[i]))
      goto error;

  for (i = 0; i < pd->db_info.num_values; i++)
    if (!parse_proc_arg (&pd->db_info.values[i]))
      goto error;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    goto error;
  token = get_next_token ();

  *proc_def = pd;
  return OK;

 error:
  g_free (pd->db_info.name);
  g_free (pd->db_info.blurb);
  g_free (pd->db_info.help);
  g_free (pd->db_info.author);
  g_free (pd->db_info.copyright);
  g_free (pd->db_info.date);
  g_free (pd->menu_path);
  g_free (pd->extensions);
  g_free (pd->prefixes);
  g_free (pd->magics);
  g_free (pd->image_types);

  for (i = 0; i < pd->db_info.num_args; i++)
    {
      g_free (pd->db_info.args[i].name);
      g_free (pd->db_info.args[i].description);
    }

  for (i = 0; i < pd->db_info.num_values; i++)
    {
      g_free (pd->db_info.values[i].name);
      g_free (pd->db_info.values[i].description);
    }

  g_free (pd->db_info.args);
  g_free (pd->db_info.values);
  g_free (pd);
  return ERROR;
}

static gint
parse_proc_arg (ProcArg *arg)
{
  gint token;

  arg->arg_type = -1;
  arg->name = NULL;
  arg->description = NULL;

  token = peek_next_token ();
  if (!token || (token != TOKEN_LEFT_PAREN))
    return ERROR;
  token = get_next_token ();

  token = peek_next_token ();
  if (!token || (token != TOKEN_SYMBOL) ||
      (strcmp ("proc-arg", token_sym) != 0))
    return ERROR;
  token = get_next_token ();

  token = peek_next_token ();
  if (!token || (token != TOKEN_NUMBER))
    return ERROR;
  token = get_next_token ();

  arg->arg_type = token_int;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();

  arg->name = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  arg->description = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    goto error;
  token = get_next_token ();

  return OK;

 error:
  g_free (arg->name);
  g_free (arg->description);

  return ERROR;
}

static gint
parse_menu_path (gpointer val1p,
		 gpointer val2p)
{
  gchar *menu_path;
  gchar *accelerator;
  gint token;

  menu_path = NULL;
  accelerator = NULL;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  menu_path = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  accelerator = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    goto error;
  token = get_next_token ();

  return OK;

 error:
  g_free (menu_path);
  g_free (accelerator);

  return ERROR;
}

static gchar *
transform_path (gchar    *path,
		gboolean  destroy)
{
  gint   length;
  gchar *new_path;
  gchar *home;
  gchar *token;
  gchar *tmp;
  gchar *tmp2;
  gint   substituted;
  gint   is_env;
  UnknownToken *ut;

  home = g_get_home_dir ();
  length = 0;
  substituted = FALSE;
  is_env = FALSE;

  tmp = path;
  while (*tmp)
    {
#ifndef G_OS_WIN32
      if (*tmp == '~')
	{
	  length += strlen (home);
	  tmp += 1;
	}
      else
#endif
	   if (*tmp == '$')
	{
	  tmp += 1;
	  if (!*tmp || (*tmp != '{'))
	    return path;
	  tmp += 1;

	  token = tmp;
	  while (*tmp && (*tmp != '}'))
	    tmp += 1;

	  if (!*tmp)
	    return path;

	  *tmp = '\0';

	  tmp2 = gimprc_find_token (token);
	  if (tmp2 == NULL) 
	    {
	      /* maybe token is an environment variable */
	      tmp2 = g_getenv (token);
#ifdef G_OS_WIN32
	      /* The default user gimprc on Windows references
	       * ${TEMP}, but not all Windows installations have that
	       * environment variable, even if it should be kinda
	       * standard. So special-case it.
	       */
	      if (tmp2 == NULL &&
		  (g_strcasecmp (token, "temp") == 0 ||
		   g_strcasecmp (token, "tmp") == 0))
		{
		  tmp2 = g_get_tmp_dir ();
		}
#endif
	      if (tmp2 != NULL)
		{
		  is_env = TRUE;
		}
	      else
		{
		  gimp_terminate ("transform_path(): gimprc token referenced but not defined: %s", token);
		}
	    }
	  tmp2 = transform_path (tmp2, FALSE);
	  if (is_env)
	    {
	      /* then add to list of unknown tokens */
	      /* but only if it isn't already in list */
	      if (gimprc_find_token (token) == NULL)
		{
		  ut = g_new (UnknownToken, 1);
		  ut->token = g_strdup (token);
		  ut->value = g_strdup (tmp2);
		  unknown_tokens = g_list_append (unknown_tokens, ut);
		}
	    }
	  else
	    {
	      gimprc_set_token (token, tmp2);
	    }
	  length += strlen (tmp2);

	  *tmp = '}';
	  tmp += 1;

	  substituted = TRUE;
	}
      else
	{
	  length += 1;
	  tmp += 1;
	}
    }

  if ((length == strlen (path)) && !substituted)
    return path;

  new_path = g_new (char, length + 1);

  tmp = path;
  tmp2 = new_path;

  while (*tmp)
    {
#ifndef G_OS_WIN32
      if (*tmp == '~')
	{
	  *tmp2 = '\0';
	  strcat (tmp2, home);
	  tmp2 += strlen (home);
	  tmp += 1;
	}
      else
#endif
	   if (*tmp == '$')
	{
	  tmp += 1;
	  if (!*tmp || (*tmp != '{'))
	    {
	      g_free (new_path);
	      return path;
	    }
	  tmp += 1;

	  token = tmp;
	  while (*tmp && (*tmp != '}'))
	    tmp += 1;

	  if (!*tmp)
	    {
	      g_free (new_path);
	      return path;
	    }

	  *tmp = '\0';
	  token = gimprc_find_token (token);
	  *tmp = '}';

	  *tmp2 = '\0';
	  strcat (tmp2, token);
	  tmp2 += strlen (token);
	  tmp += 1;
	}
      else
	{
	  *tmp2++ = *tmp++;
	}
    }

  *tmp2 = '\0';

  if (destroy)
    g_free (path);

  return new_path;
}

/* Copied from gtk_menu_factory_parse_accelerator() */
static void
parse_device_accelerator (const char   *accelerator,
			  GdkDeviceKey *key)
{
  gboolean done;

  g_return_if_fail (accelerator != NULL);
  g_return_if_fail (key != NULL);

  key->modifiers = 0;

  done = FALSE;
  while (!done)
    {
      if (strncmp (accelerator, "<shift>", 7) == 0)
        {
          accelerator += 7;
          key->modifiers |= GDK_SHIFT_MASK;
        }
      else if (strncmp (accelerator, "<alt>", 5) == 0)
        {
          accelerator += 5;
          key->modifiers |= GDK_MOD1_MASK;
        }
      else if (strncmp (accelerator, "<control>", 9) == 0)
        {
          accelerator += 9;
          key->modifiers |= GDK_CONTROL_MASK;
        }
      else
        {
          done = TRUE;
	  /* Tricky, but works... ("" => keyval = 0, or no translation) */
          key->keyval = accelerator[0];
        }
    }
}

static gint 
parse_device (gpointer val1p, 
	      gpointer val2p)
{
  DeviceValues values = 0;
  gint i;
  gint token;
  
  /* The initialized values here are meaningless */
  gchar *name        = NULL;
  GdkInputMode mode  = GDK_MODE_DISABLED;
  gint num_axes      = 0;
  GdkAxisUse *axes   = NULL;
  gint num_keys      = 0;
  GdkDeviceKey *keys = NULL;

  ToolType tool        = RECT_SELECT;
  guchar foreground[3] = { 0, 0, 0 };
  guchar background[3] = { 0, 0, 0 };
  gchar *brush_name    = NULL;
  gchar *pattern_name  = NULL;
  gchar *gradient_name = NULL;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    goto error;
  token = get_next_token ();

  name = g_strdup (token_str);

  /* Parse options for device */

  while (peek_next_token () == TOKEN_LEFT_PAREN)
    {
      token = get_next_token ();

      token = peek_next_token ();
      if (!token || (token != TOKEN_SYMBOL))
	goto error;
      token = get_next_token ();

      if (!strcmp ("mode", token_sym))
	{
	  values |= DEVICE_MODE;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_SYMBOL))
	    goto error;
	  token = get_next_token ();

	  if (!strcmp ("disabled", token_sym))
	    mode = GDK_MODE_DISABLED;
	  else if (!strcmp ("window", token_sym))
	    mode = GDK_MODE_WINDOW;
	  else if (!strcmp ("screen", token_sym))
	    mode = GDK_MODE_SCREEN;
	  else
	    goto error;
	}
      else if (!strcmp ("axes", token_sym))
	{
	  values |= DEVICE_AXES;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    goto error;
	  token = get_next_token ();

	  num_axes = token_int;
	  axes = g_new (GdkAxisUse, num_axes);

	  for (i = 0; i < num_axes; i++)
	    {
	      token = peek_next_token ();
	      if (!token || (token != TOKEN_SYMBOL))
		goto error;
	      token = get_next_token ();

	      if (!strcmp ("ignore", token_sym))
		axes[i] = GDK_AXIS_IGNORE;
	      else if (!strcmp ("x", token_sym))
		axes[i] = GDK_AXIS_X;
	      else if (!strcmp ("y", token_sym))
		axes[i] = GDK_AXIS_Y;
	      else if (!strcmp ("pressure", token_sym))
		axes[i] = GDK_AXIS_PRESSURE;
	      else if (!strcmp ("xtilt", token_sym))
		axes[i] = GDK_AXIS_XTILT;
	      else if (!strcmp ("ytilt", token_sym))
		axes[i] = GDK_AXIS_YTILT;
#ifdef GTK_HAVE_SIX_VALUATORS
              else if (!strcmp ("wheel", token_sym))
               axes[i] = GDK_AXIS_WHEEL;
#endif /* GTK_HAVE_SIX_VALUATORS */
	      else
		goto error;
	    }
	}
      else if (!strcmp ("keys", token_sym))
	{
	  values |= DEVICE_KEYS;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    goto error;
	  token = get_next_token ();

	  num_keys = token_int;
	  keys = g_new (GdkDeviceKey, num_keys);

	  for (i=0; i<num_keys; i++)
	    {
	      token = peek_next_token ();
	      if (!token || (token != TOKEN_STRING))
		goto error;
	      token = get_next_token ();

	      parse_device_accelerator (token_str, &keys[i]);
	    }
	}
      else if (!strcmp ("tool", token_sym))
	{
	  values |= DEVICE_TOOL;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();

	  /* FIXME: this shouldn't be hard coded like this */
	  for (tool = FIRST_TOOLBOX_TOOL; tool <= LAST_TOOLBOX_TOOL; tool++)
	    {
	      if (!strcmp (tool_info[tool].tool_name, token_str))
		break;
	    }
	  if (tool > LAST_TOOLBOX_TOOL)
	    goto error;
	}
      else if (!strcmp ("foreground", token_sym))
	{
	  values |= DEVICE_FOREGROUND;

	  for (i = 0; i < 3; i++)
	    {
	      token = peek_next_token ();
	      if (!token || (token != TOKEN_NUMBER))
		goto error;
	      token = get_next_token ();

	      foreground[i] = token_int;
	    }
	}
      else if (!strcmp ("background", token_sym))
	{
	  values |= DEVICE_BACKGROUND;

	  for (i = 0; i < 3; i++)
	    {
	      token = peek_next_token ();
	      if (!token || (token != TOKEN_NUMBER))
		goto error;
	      token = get_next_token ();

	      background[i] = token_int;
	    }
	}
      else if (!strcmp ("brush", token_sym))
	{
	  values |= DEVICE_BRUSH;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();

	  brush_name = g_strdup (token_str);
	}
      else if (!strcmp ("pattern", token_sym))
	{
	  values |= DEVICE_PATTERN;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();

	  pattern_name = g_strdup (token_str);
	}
      else if (!strcmp ("gradient", token_sym))
	{
	  values |= DEVICE_GRADIENT;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();

	  gradient_name = g_strdup (token_str);
	}
      else
	goto error;
      
      token = peek_next_token ();
      if (!token || (token != TOKEN_RIGHT_PAREN))
	goto error;
      token = get_next_token ();
    }

  if (!token || (token != TOKEN_RIGHT_PAREN))
    goto error;
  token = get_next_token ();

  devices_rc_update (name, values, mode, num_axes, axes, num_keys, keys,
		     tool,
		     foreground,
		     background,
		     brush_name,
		     pattern_name,
		     gradient_name);

  g_free (brush_name);
  g_free (pattern_name);
  g_free (gradient_name);
  g_free (name);
  g_free (axes);
  g_free (keys);

  return OK;

 error:
  g_free (brush_name);
  g_free (pattern_name);
  g_free (gradient_name);
  g_free (name);
  g_free (axes);
  g_free (keys);

  return ERROR;
}

static gint
parse_session_info (gpointer val1p, 
		    gpointer val2p)
{
  gint i;
  gint token;
  SessionInfo *info = NULL;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();

  for (i = 0; i < nsession_infos; i++)
    { 
      if (strcmp (session_infos[i]->name, token_str) == 0)
	info = session_infos[i];
    }

  if (info == NULL)
    return ERROR;

  /* Parse options for session info */

  while (peek_next_token () == TOKEN_LEFT_PAREN)
    {
      token = get_next_token ();

      token = peek_next_token ();
      if (!token || (token != TOKEN_SYMBOL))
	return ERROR;
      token = get_next_token ();

      if (!strcmp ("position", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    return ERROR;
	  token = get_next_token ();
	  info->x = token_int;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    return ERROR;
	  token = get_next_token ();
	  info->y = token_int;
	}
      else if (!strcmp ("size", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    return ERROR;
	  token = get_next_token ();
	  info->width = token_int;

	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    return ERROR;
	  token = get_next_token ();
	  info->height = token_int;
	}
      else if (!strcmp ("open-on-exit", token_sym))
	  info->open = TRUE;
      else
	return ERROR;
      
      token = peek_next_token ();
      if (!token || (token != TOKEN_RIGHT_PAREN))
	return ERROR;
      token = get_next_token ();
    }

  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  session_info_updates = g_list_append (session_info_updates, info);

  return OK;
}

static gint
parse_unit_info (gpointer val1p, 
		 gpointer val2p)
{
  gint token;

  GimpUnit unit;

  gchar   *identifier   = NULL;
  gdouble  factor       = 1.0;
  gint     digits       = 2.0;
  gchar   *symbol       = NULL;
  gchar   *abbreviation = NULL;
  gchar   *singular     = NULL;
  gchar   *plural       = NULL;

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    return ERROR;
  token = get_next_token ();
  identifier = g_strdup (token_str);

  /* Parse options for unit info */

  while (peek_next_token () == TOKEN_LEFT_PAREN)
    {
      token = get_next_token ();

      token = peek_next_token ();
      if (!token || (token != TOKEN_SYMBOL))
	goto error;
      token = get_next_token ();

      if (!strcmp ("factor", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    goto error;
	  token = get_next_token ();
	  factor = token_num;
	}
      else if (!strcmp ("digits", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_NUMBER))
	    goto error;
	  token = get_next_token ();
	  digits = token_int;
	}
      else if (!strcmp ("symbol", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();
	  symbol = g_strdup (token_str);
	}
      else if (!strcmp ("abbreviation", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();
	  abbreviation = g_strdup (token_str);
	}
      else if (!strcmp ("singular", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();
	  singular = g_strdup (token_str);
	}
      else if (!strcmp ("plural", token_sym))
	{
	  token = peek_next_token ();
	  if (!token || (token != TOKEN_STRING))
	    goto error;
	  token = get_next_token ();
	  plural = g_strdup (token_str);
	}
      else
	goto error;
      
      token = peek_next_token ();
      if (!token || (token != TOKEN_RIGHT_PAREN))
	goto error;
      token = get_next_token ();
    }

  if (!token || (token != TOKEN_RIGHT_PAREN))
    goto error;
  token = get_next_token ();

  unit = gimp_unit_new (identifier, factor, digits,
			symbol, abbreviation, singular, plural);
  /*  make the unit definition persistent  */
  gimp_unit_set_deletion_flag (unit, FALSE);

  g_free (identifier);
  g_free (symbol);
  g_free (abbreviation);
  g_free (singular);
  g_free (plural);

  return OK;

 error:
  g_free (identifier);
  g_free (symbol);
  g_free (abbreviation);
  g_free (singular);
  g_free (plural);

  return ERROR;
}

static gint
parse_parasite (gpointer val1p, 
		gpointer val2p)
{
  gint token;
  gint res = ERROR;
  gchar *identifier = NULL;
  gulong flags = 0;
  GimpParasite *parasite;

  token = get_next_token ();
  if (token != TOKEN_STRING)
    goto error;

  identifier = g_strdup (token_str);

  token = get_next_token ();

  /* possible future extension: allow flags as symbolic strings.  */
  if (token == TOKEN_NUMBER)
    flags |= token_int;

  token = get_next_token ();
  if (token != TOKEN_STRING)
    goto error;

  parasite = gimp_parasite_new (identifier, flags, token_int, token_str);
  gimp_parasite_attach (parasite);  /* attaches a copy */
  gimp_parasite_free (parasite);

  token = get_next_token ();
  if (token != TOKEN_RIGHT_PAREN)
    goto error;

  res = OK;

error:
  g_free (identifier);
  return res;
}

static gint
parse_help_browser (gpointer val1p,
		    gpointer val2p)
{
  gint token;

  token = peek_next_token ();
  if (!token || token != TOKEN_SYMBOL)
    return ERROR;
  token = get_next_token ();

  if (strcmp (token_sym, "gimp") == 0)
    help_browser = HELP_BROWSER_GIMP;
  else if (strcmp (token_sym, "netscape") == 0)
    help_browser = HELP_BROWSER_NETSCAPE;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_cursor_mode (gpointer val1p,
		   gpointer val2p)
{
  gint token;

  token = peek_next_token ();
  if (!token || token != TOKEN_SYMBOL)
    return ERROR;
  token = get_next_token ();

  if (strcmp (token_sym, "tool-icon") == 0)
    cursor_mode = CURSOR_MODE_TOOL_ICON;
  else if (strcmp (token_sym, "tool-crosshair") == 0)
    cursor_mode = CURSOR_MODE_TOOL_CROSSHAIR;
  else if (strcmp (token_sym, "crosshair") == 0)
    cursor_mode = CURSOR_MODE_CROSSHAIR;

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    return ERROR;
  token = get_next_token ();

  return OK;
}

static gint
parse_unknown (gchar *token_sym)
{
  gint token;
  UnknownToken *ut, *tmp;
  GList *list;

  ut = g_new (UnknownToken, 1);
  ut->token = g_strdup (token_sym);

  token = peek_next_token ();
  if (!token || (token != TOKEN_STRING))
    {
      g_free (ut->token);
      g_free (ut);
      return ERROR;
    }
  token = get_next_token ();

  ut->value = g_strdup (token_str);

  token = peek_next_token ();
  if (!token || (token != TOKEN_RIGHT_PAREN))
    {
      g_free (ut->token);
      g_free (ut->value);
      g_free (ut);
      return ERROR;
    }
  token = get_next_token ();

  /*  search through the list of unknown tokens and replace an existing entry  */
  list = unknown_tokens;
  while (list)
    {
      tmp = (UnknownToken *) list->data;
      list = list->next;

      if (strcmp (tmp->token, ut->token) == 0)
	{
	  unknown_tokens = g_list_remove (unknown_tokens, tmp);
	  g_free (tmp->token);
	  g_free (tmp->value);
	  g_free (tmp);
	}
    }

  ut->value = transform_path (ut->value, TRUE);
  unknown_tokens = g_list_append (unknown_tokens, ut);

  return OK;
}


gchar* 
gimprc_value_to_str (gchar *name)
{
  return value_to_str (name); /* had a namespace collision */
}

static gchar *
value_to_str (gchar *name)
{
  gint i;

  for (i = 0; i < nfuncs; i++)
    if (! strcmp (funcs[i].name, name))
      switch (funcs[i].type)
	{
	case TT_STRING:
	  return string_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_PATH:
	  return path_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_DOUBLE:
	  return double_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_FLOAT:
	  return float_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_INT:
	  return int_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_BOOLEAN:
	  return boolean_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_POSITION:
	  return position_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_MEMSIZE:
	  return mem_size_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_IMAGETYPE:
	  return image_type_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_INTERP:
	  return interpolation_type_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_XPREVSIZE:
	  return preview_size_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_XNAVPREVSIZE:
	  return nav_preview_size_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_XUNIT:
	  return units_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_XHELPBROWSER:
	  return help_browser_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_XCURSORMODE:
	  return cursor_mode_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_XCOMMENT:
	  return comment_to_str (funcs[i].val1p, funcs[i].val2p);
	case TT_XPLUGIN:
	case TT_XPLUGINDEF:
	case TT_XMENUPATH:
	case TT_XDEVICE:
	case TT_XSESSIONINFO:
	case TT_XUNITINFO:
	case TT_XPARASITE:
	  return NULL;
	}
  return NULL;
}

static inline gchar *
string_to_str (gpointer val1p,
	       gpointer val2p)
{
  gchar *str = gimp_strescape (*((char **)val1p), NULL);
  gchar *retval;

  retval = g_strdup_printf ("%c%s%c", '"', str, '"');
  g_free (str);

  return retval;
}

static inline gchar *
path_to_str (gpointer val1p,
	     gpointer val2p)
{
  return string_to_str (val1p, val2p);
}

static inline gchar *
double_to_str (gpointer val1p,
	       gpointer val2p)
{
  return g_strdup_printf ("%f", *((gdouble *)val1p));
}

static inline gchar *
float_to_str (gpointer val1p,
	      gpointer val2p)
{
  return g_strdup_printf ("%f", (gdouble)(*((float *)val1p)));
}

static inline gchar *
int_to_str (gpointer val1p,
	    gpointer val2p)
{
  return g_strdup_printf ("%d", *((gint *)val1p));
}

static inline gchar *
boolean_to_str (gpointer val1p,
		gpointer val2p)
{
  int v;

  if (val1p != NULL)
    v = *((int *)val1p);
  else
    v = !*((int *)val2p);
  if (v)
    return g_strdup ("yes");
  else
    return g_strdup ("no");
}

static inline gchar *
position_to_str (gpointer val1p,
		 gpointer val2p)
{
  return g_strdup_printf ("%d %d", *((int *)val1p), *((int *)val2p));
}

static inline gchar *
mem_size_to_str (gpointer val1p,
		 gpointer val2p)
{
  guint size;

  size = *((guint *)val1p);
  if (size % 1048576 == 0)
    return g_strdup_printf ("%dM", size / 1048576);
  else if (size % 1024 == 0)
    return g_strdup_printf ("%dK", size / 1024);
  else
    return g_strdup_printf ("%dB", size);
}

static inline gchar *
image_type_to_str (gpointer val1p,
		   gpointer val2p)
{
  gint type;

  type = *((gint *)val1p);
  if (type == GRAY)
    return g_strdup ("gray");
  else
    return g_strdup ("rgb");
}

static inline gchar *
interpolation_type_to_str (gpointer val1p,
			   gpointer val2p)
{
  InterpolationType type;

  type = *((InterpolationType *)val1p);
  switch (type)
  {
   case LINEAR_INTERPOLATION:
     return g_strdup ("linear");
   case CUBIC_INTERPOLATION:
     return g_strdup ("cubic");
   case NEAREST_NEIGHBOR_INTERPOLATION:
     return g_strdup ("nearest-neighbor");
   default:
     return g_strdup ("bad interpolation type");
  }
}

static inline gchar *
preview_size_to_str (gpointer val1p,
		     gpointer val2p)
{
  if (preview_size >= 128)
    return g_strdup ("huge");
  else if (preview_size >= 64)
    return g_strdup ("large");
  else if (preview_size >= 48)
    return g_strdup ("medium");
  else if (preview_size >= 32)
    return g_strdup ("small");
  else if (preview_size >= 24)
    return g_strdup ("tiny");
  else
    return g_strdup ("none");
}

static inline gchar *
nav_preview_size_to_str (gpointer val1p,
			 gpointer val2p)
{
  if (nav_preview_size >= 112)
    return g_strdup ("large");
  else if (nav_preview_size >= 80)
    return g_strdup ("medium");
  else if (nav_preview_size >= 48)
    return g_strdup ("small");
  else
    return g_strdup ("large");
}


static inline gchar *
units_to_str (gpointer val1p,
	      gpointer val2p)
{
  return g_strdup (gimp_unit_get_identifier (*((GimpUnit*)val1p)));
}

static inline gchar *
help_browser_to_str (gpointer val1p,
		     gpointer val2p)
{
  if (help_browser == HELP_BROWSER_NETSCAPE)
    return g_strdup ("netscape");
  else
    return g_strdup ("gimp");
}

static inline gchar *
cursor_mode_to_str (gpointer val1p,
		    gpointer val2p)
{
  if (cursor_mode == CURSOR_MODE_TOOL_ICON)
    return g_strdup ("tool-icon");
  else if (cursor_mode == CURSOR_MODE_TOOL_CROSSHAIR)
    return g_strdup ("tool-crosshair");
  else
    return g_strdup ("crosshair");
}

static inline gchar *
comment_to_str (gpointer val1p,
		gpointer val2p)
{
  gchar **str_array;
  gchar *retval;
  gchar *str = gimp_strescape (*((char **)val1p), NULL);

  str_array = g_strsplit (str, "\n", 0);
  g_free (str);
  str = g_strjoinv ("\\n", str_array);
  g_strfreev (str_array);
  retval = g_strdup_printf ("%c%s%c", '"', str, '"');
  g_free (str);

  return retval;
}

static void
add_gimp_directory_token (gchar *gimp_dir)
{
  UnknownToken *ut;

  /*
    The token holds data from a static buffer which is initialized
    once.  There should be no need to change an already-existing
    value.
  */
  if (NULL != gimprc_find_token ("gimp_dir"))
    return;

  ut = g_new (UnknownToken, 1);
  ut->token = g_strdup ("gimp_dir");
  ut->value = g_strdup (gimp_dir);

  /* Similarly, transforming the path should be silly. */
  unknown_tokens = g_list_append (unknown_tokens, ut);

  /* While we're at it, also add the token gimp_install_dir */
  ut = g_new (UnknownToken, 1);
  ut->token = g_strdup ("gimp_install_dir");
  ut->value = gimp_data_directory ();

  unknown_tokens = g_list_append (unknown_tokens, ut);
}

#ifdef __EMX__
static void
add_x11root_token (gchar *x11root)
{
  UnknownToken *ut;

  if (x11root == NULL)
    return;
  /*
    The token holds data from a static buffer which is initialized
    once.  There should be no need to change an already-existing
    value.
  */
  if (gimprc_find_token ("x11root") != NULL)
    return;

  ut = g_new (UnknownToken, 1);
  ut->token = g_strdup ("x11root");
  ut->value = g_strdup (x11root);

  unknown_tokens = g_list_append (unknown_tokens, ut);
}
#endif

/* Try to:

   1. Open the personal file for reading.

   1b. If that fails, try to open the system (overriding) file

   2. If we could open the personal file, rename it to file.old.

   3. Open personal file for writing.

   On success, return NULL. On failure, return a string in English
   explaining the problem.

   */
static gchar *
open_backup_file (gchar  *filename,
		  gchar  *secondary_filename,
		  gchar **name_used,
                  FILE  **fp_new,
                  FILE  **fp_old)
{
  gchar *oldfilename = NULL;

  /* Rename the file to *.old, open it for reading and create the new file. */
  if ((*fp_old = fopen (filename, "rt")) == NULL)
    {
      if ((*fp_old = fopen (secondary_filename, "rt")) == NULL)
	{
	  return g_strdup_printf (_("Can't open %s; %s"),
				  secondary_filename, g_strerror (errno));
	}
      else
	*name_used = secondary_filename;
    }
  else
    {
      *name_used = filename;
      oldfilename = g_strdup_printf ("%s.old", filename);
#if defined(G_OS_WIN32) || defined(__EMX__)
      /* Can't rename open files... */
      fclose (*fp_old);
      /* Also, can't rename to an existing file name */
      unlink (oldfilename);
#endif
      if (rename (filename, oldfilename) < 0)
	{
	  g_free (oldfilename);
	  return g_strdup_printf (_("Can't rename %s to %s.old; %s"),
				    filename, filename, g_strerror (errno));
	}
#if defined(G_OS_WIN32) || defined(__EMX__)
      /* Can't rename open files... */
      if ((*fp_old = fopen (oldfilename, "rt")) == NULL)
	g_error (_("Couldn't reopen %s\n"), oldfilename);
#endif
    }

  if ((*fp_new = fopen (filename, "w")) == NULL)
    {
      if (oldfilename != NULL)
	{
	  /* Undo the renaming... */
	  (void) rename (oldfilename, filename);
	  g_free (oldfilename);
	}
      return g_strdup_printf (_("Can't write to %s; %s"),
			      filename, g_strerror (errno));
    }

  if (oldfilename != NULL)
    g_free (oldfilename);
  return NULL;
}

gchar*
gimprc_find_token (gchar *token)
{
  GList *list;
  UnknownToken *ut;

  for (list = unknown_tokens; list; list = g_list_next (list))
    {
      ut = (UnknownToken *) list->data;

      if (strcmp (ut->token, token) == 0)
	return ut->value;
    }

  return NULL;
}

static void
gimprc_set_token (gchar *token,
		  gchar *value)
{
  GList *list;
  UnknownToken *ut;

  for (list = unknown_tokens; list; list = g_list_next (list))
    {
      ut = (UnknownToken *) list->data;

      if (strcmp (ut->token, token) == 0)
	{
	  if (ut->value != value)
	    {
	      if (ut->value)
		g_free (ut->value);
	      ut->value = value;
	    }
	  break;
	}
    }
}