1  /* GIO - GLib Input, Output and Streaming Library
       2   *
       3   * Copyright (C) 2017 Collabora Inc.
       4   *
       5   * SPDX-License-Identifier: LGPL-2.1-or-later
       6   *
       7   * This library is free software; you can redistribute it and/or
       8   * modify it under the terms of the GNU Lesser General Public
       9   * License as published by the Free Software Foundation; either
      10   * version 2.1 of the License, or (at your option) any later version.
      11   *
      12   * This library is distributed in the hope that it will be useful,
      13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15   * Lesser General Public License for more details.
      16   *
      17   * You should have received a copy of the GNU Lesser General
      18   * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
      19   *
      20   * Author: Xavier Claessens <xavier.claessens@collabora.com>
      21   */
      22  
      23  #include "config.h"
      24  
      25  #define __GIO_GIO_H_INSIDE__
      26  #include "giomodule.h"
      27  #include "giomodule-priv.h"
      28  
      29  #include <string.h>
      30  
      31  /**
      32   * _g_io_module_extract_name:
      33   * @filename: filename of a GIOModule
      34   *
      35   * Extract the plugin name from its filename. It removes optional "lib" or
      36   * "libgio" prefix, and removes everything after the first dot. For example:
      37   * "libgiognutls.so" -> "gnutls".
      38   *
      39   * Returns: (transfer full): the module's name
      40   */
      41  gchar *
      42  _g_io_module_extract_name (const char *filename)
      43  {
      44    gchar *bname, *name;
      45    const gchar *dot;
      46    gsize prefix_len, len;
      47    gsize i;
      48  
      49    bname = g_path_get_basename (filename);
      50    for (i = 0; bname[i]; ++i)
      51      {
      52        if (bname[i] == '-')
      53          bname[i] = '_';
      54      }
      55  
      56    if (g_str_has_prefix (bname, "libgio"))
      57      prefix_len = 6;
      58    /* DLLs built with MSVC generally do not have the 'lib' prefix */
      59    else if (g_str_has_prefix (bname, "lib") || g_str_has_prefix (bname, "gio"))
      60      prefix_len = 3;
      61    else
      62      prefix_len = 0; /* use whole name (minus suffix) as plugin name */
      63  
      64    dot = strchr (bname, '.');
      65    if (dot != NULL)
      66      len = dot - bname - prefix_len;
      67    else
      68      len = strlen (bname + prefix_len);
      69  
      70    name = g_strndup (bname + prefix_len, len);
      71    g_free (bname);
      72  
      73    return name;
      74  }