src/FLARM/NameDatabase.cpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #include "NameDatabase.hpp"
  25
  26 int
  27 FlarmNameDatabase::Find(FlarmId id) const
  28 {
  29   assert(id.IsDefined());
  30
  31   for (unsigned i = 0, size = data.size(); i != size; ++i)
  32     if (data[i].id == id)
  33       return i;
  34
  35   return -1;
  36 }
  37
  38 int
  39 FlarmNameDatabase::Find(const TCHAR *name) const
  40 {
  41   assert(name != nullptr);
  42
  43   for (unsigned i = 0, size = data.size(); i != size; ++i)
  44     if (data[i].name.equals(name))
  45       return i;
  46
  47   return -1;
  48 }
  49
  50 const TCHAR *
  51 FlarmNameDatabase::Get(FlarmId id) const
  52 {
  53   int i = Find(id);
  54   if (i < 0)
  55     return nullptr;
  56
  57   return data[i].name;
  58 }
  59
  60 FlarmId
  61 FlarmNameDatabase::Get(const TCHAR *name) const
  62 {
  63   int i = Find(name);
  64   if (i < 0)
  65     return FlarmId::Undefined();
  66
  67   return data[i].id;
  68 }
  69
  70 unsigned
  71 FlarmNameDatabase::Get(const TCHAR *name, FlarmId *buffer, unsigned max) const
  72 {
  73   assert(name != nullptr);
  74   assert(buffer != nullptr);
  75   assert(max > 0);
  76
  77   unsigned n = 0;
  78   for (unsigned i = 0, size = data.size(); i != size && n != max; ++i)
  79     if (data[i].name.equals(name))
  80       buffer[n++] = data[i].id;
  81
  82   return n;
  83 }
  84
  85 bool
  86 FlarmNameDatabase::Set(FlarmId id, const TCHAR *name)
  87 {
  88   assert(id.IsDefined());
  89   assert(name != nullptr);
  90
  91   int i = Find(id);
  92   if (i >= 0) {
  93     /* update existing record */
  94     data[i].name = name;
  95     return true;
  96   } else if (!data.full()) {
  97     /* create new record */
  98     data.append({id, name});
  99     return true;
 100   } else
 101     /* error: database is full */
 102     return false;
 103 }