apps/paths.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 Thomas Martitz
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22
  23 #include <stdio.h> /* snprintf */
  24 #include <stdlib.h>
  25 #include "paths.h"
  26 #include "file.h" /* MAX_PATH */
  27 #include "dir.h"
  28 #include "gcc_extensions.h"
  29 #include "string-extra.h"
  30 #include "misc.h"
  31
  32
  33 void paths_init(void)
  34 {
  35     /* make sure $HOME/.config/rockbox.org exists, it's needed for config.cfg */
  36     char home_path[MAX_PATH];
  37     snprintf(home_path, sizeof(home_path), "%s/.config/rockbox.org", getenv("HOME"));
  38     mkdir(home_path);
  39 }
  40
  41 const char* get_user_file_path(const char *path,
  42                                unsigned flags,
  43                                char* buf,
  44                                const size_t bufsize)
  45 {
  46     const char *ret = path;
  47     const char *pos = path;
  48     printf("%s(): looking for %s\n", __func__, path);
  49     /* replace ROCKBOX_DIR in path with $HOME/.config/rockbox.org */
  50     pos += ROCKBOX_DIR_LEN;
  51     if (*pos == '/') pos += 1;
  52
  53     if (snprintf(buf, bufsize, "%s/.config/rockbox.org/%s", getenv("HOME"), pos)
  54             >= (int)bufsize)
  55         return NULL;
  56
  57     /* always return the replacement buffer (pointing to $HOME) if
  58      * write access is needed */
  59     if (flags & NEED_WRITE)
  60         ret = buf;
  61     else
  62     {
  63         if (flags & IS_FILE)
  64         {
  65             if (file_exists(buf))
  66                 ret = buf;
  67         }
  68         else
  69         {
  70             if (dir_exists(buf))
  71                 ret = buf;
  72         }
  73     }
  74
  75     /* make a copy if we're about to return the path*/
  76     if (UNLIKELY((flags & FORCE_BUFFER_COPY) && (ret != buf)))
  77     {
  78         strlcpy(buf, ret, bufsize);
  79         ret = buf;
  80     }
  81
  82     printf("%s(): %s\n", __func__, ret);
  83     return ret;
  84 }