apps/plugins/shortcuts/shortcuts.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Bryan Childs
  11  * Copyright (c) 2007 Alexander Levin
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ****************************************************************************/
  22
  23 #ifndef _SHORTCUTS_H
  24 #define _SHORTCUTS_H
  25
  26 #include "plugin.h"
  27
  28 #define PATH_SEPARATOR "/"
  29 #define PATH_SEPARATOR_LEN 1 /* strlen(PATH_SEPARATOR) */
  30
  31 #if defined(DEBUG) || defined(SIMULATOR)
  32 #define SC_DEBUG
  33 #endif
  34
  35 #define SHORTCUTS_FILENAME "/shortcuts.link"
  36
  37 typedef struct sc_entry_s
  38 {
  39     char path[MAX_PATH+1];
  40     char disp[MAX_PATH+1];
  41     bool explicit_disp;
  42 } sc_entry_t;
  43
  44 typedef struct sc_file_s
  45 {
  46     sc_entry_t *entries;
  47     int max_entries; /* Max allowed number of entries */
  48     int entry_cnt; /* Current number of entries */
  49     int show_last_segments;
  50 } sc_file_t;
  51
  52
  53 extern void *memory_buf;
  54 extern size_t memory_bufsize;
  55
  56
  57 extern sc_file_t sc_file;
  58
  59
  60 /* Allocates a chunk of memory (as much as possible) */
  61 void allocate_memory(void **buf, size_t *bufsize);
  62
  63 /* Initializes the file */
  64 void init_sc_file(sc_file_t *file, void *buf, size_t bufsize);
  65
  66 /* Loads shortcuts from the file. Returns true iff succeeded */
  67 bool load_sc_file(sc_file_t *file, char* filename, bool must_exist,
  68         void *entry_buf, size_t entry_bufsize);
  69
  70 /* Writes contents to the file. File is overwritten. */
  71 bool dump_sc_file(sc_file_t *file, char *filename);
  72
  73 /* Appends the entry to the file. Entry is copied. Returns true iff succeded. */
  74 bool append_entry(sc_file_t *file, sc_entry_t *entry);
  75
  76 /* Removes the specified entry (0-based index). Returns true iff succeded. */
  77 bool remove_entry(sc_file_t *file, int entry_idx);
  78
  79 /* Checks whether the index is a valid one for the file. */
  80 bool is_valid_index(sc_file_t *file, int entry_idx);
  81
  82
  83 #ifdef SC_DEBUG
  84 void print_file(sc_file_t *file);
  85 #endif
  86
  87 #endif