common/NumberStream.cpp

   1 /*
   2 * Copyright (c) 2012, 2013 Samsung Electronics Co., Ltd.
   3 *
   4 * Licensed under the Apache License, Version 2.0 (the "License");
   5 * you may not use this file except in compliance with the License.
   6 * You may obtain a copy of the License at
   7 *
   8 * http://www.apache.org/licenses/LICENSE-2.0
   9 *
  10 * Unless required by applicable law or agreed to in writing, software
  11 * distributed under the License is distributed on an "AS IS" BASIS,
  12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 * See the License for the specific language governing permissions and
  14 * limitations under the License.
  15 */
  16
  17
  18 #include "NumberStream.h"
  19
  20 namespace smartcard_service_api
  21 {
  22         NumberStream::NumberStream(const ByteArray &T)
  23         {
  24                 setBuffer(T.getBuffer(), T.getLength());
  25         }
  26
  27         unsigned int NumberStream::getBigEndianNumber()
  28         {
  29                 return getBigEndianNumber(*this);
  30         }
  31
  32         unsigned int NumberStream::getLittleEndianNumber()
  33         {
  34                 return getLittleEndianNumber(*this);
  35         }
  36
  37         NumberStream &NumberStream::operator =(const ByteArray &T)
  38         {
  39                 if (this != &T)
  40                 {
  41                         setBuffer(T.getBuffer(), T.getLength());
  42                 }
  43
  44                 return *this;
  45         }
  46
  47         NumberStream &NumberStream::operator =(const NumberStream &T)
  48         {
  49                 if (this != &T)
  50                 {
  51                         setBuffer(T.getBuffer(), T.getLength());
  52                 }
  53
  54                 return *this;
  55         }
  56
  57         unsigned int NumberStream::getBigEndianNumber(const ByteArray &T)
  58         {
  59                 int i, len;
  60                 unsigned int result = 0;
  61
  62                 len = (T.getLength() < 4) ? T.getLength() : 4;
  63
  64                 for (i = 0; i < len; i++)
  65                 {
  66                         result = (result << 8) | T.getAt(i);
  67                 }
  68
  69                 return result;
  70         }
  71
  72         unsigned int NumberStream::getLittleEndianNumber(const ByteArray &T)
  73         {
  74                 int i, len;
  75                 unsigned int result = 0;
  76
  77                 len = (T.getLength() < 4) ? T.getLength() : 4;
  78
  79                 for (i = 0; i < len; i++)
  80                 {
  81                         result = result | (T.getAt(i) << (i * 8));
  82                 }
  83
  84                 return result;
  85         }
  86
  87 } /* namespace smartcard_service_api */