/* GIO - GLib Input, Output and Streaming Library

 *

 * Copyright (C) 2017 Collabora Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General

 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.

 *

 * Author: Xavier Claessens <xavier.claessens@collabora.com>

 */

#include "config.h"

#include "giomodule.h"

#include "giomodule-priv.h"

#include <string.h>

/**

 * _g_io_module_extract_name:

 * @filename: filename of a GIOModule

 *

 * Extract the plugin name from its filename. It removes optional "lib" or

 * "libgio" prefix, and removes everything after the first dot. For example:

 * "libgiognutls.so" -> "gnutls".

 *

 * Returns: (transfer full): the module's name

 */

gchar *

_g_io_module_extract_name (const char *filename)

{

  gchar *bname, *name;

  const gchar *dot;

  gsize prefix_len, len;

  gsize i;

  bname = g_path_get_basename (filename);

  for (i = 0; bname[i]; ++i)

    {

      if (bname[i] == '-')

        bname[i] = '_';

    }

  if (g_str_has_prefix (bname, "libgio"))

    prefix_len = 6;

  /* DLLs built with MSVC generally do not have the 'lib' prefix */

  else if (g_str_has_prefix (bname, "lib") || g_str_has_prefix (bname, "gio"))

    prefix_len = 3;

  else

    prefix_len = 0; /* use whole name (minus suffix) as plugin name */

  dot = strchr (bname, '.');

  if (dot != NULL)

    len = dot - bname - prefix_len;

  else

    len = strlen (bname + prefix_len);

  name = g_strndup (bname + prefix_len, len);

  g_free (bname);

  return name;

}