jni/minibind/parcel.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "parcel.h"
   6
   7 #include "common.h"
   8
   9 namespace minibind {
  10
  11 Parcel::Parcel() : data_position_(0), data_(), objects_() {}
  12
  13 Parcel::~Parcel() {}
  14
  15 void Parcel::WriteInterfaceToken(const std::string& str) {
  16   WriteUTF8(str);
  17 }
  18
  19 void Parcel::WriteUTF8(const std::string& str) {
  20   data_.insert(data_.end(), str.begin(), str.end());
  21 }
  22
  23 void Parcel::WriteUInt32(uint32_t ui32) {
  24   data_.push_back((ui32 >> 24) & 0xff);
  25   data_.push_back((ui32 >> 16) & 0xff);
  26   data_.push_back((ui32 >> 8) & 0xff);
  27   data_.push_back((ui32 >> 0) & 0xff);
  28 }
  29
  30 bool Parcel::ReadUInt32(uint32_t* ui32) {
  31   return ReadBytes(sizeof(*ui32), ui32);
  32 }
  33
  34 bool Parcel::ReadBytes(size_t count, void* buffer) {
  35   // TODO: overflow
  36   ALOG("count=%d, data_position_=%d, datasize=%d", count, data_position_, DataSize());
  37   if (count + data_position_ >= DataSize())
  38     return false;
  39
  40   memcpy(buffer, &data_[data_position_], count);
  41   data_position_ += count;
  42   return true;
  43 }
  44
  45 binder_uintptr_t Parcel::DataPointer() const {
  46   return reinterpret_cast<binder_uintptr_t>(&data_[0]);
  47 }
  48
  49 size_t Parcel::DataSize() const {
  50   return data_.size();
  51 }
  52
  53 void Parcel::SetDataSize(size_t size) {
  54   // TODO: handle object lifetimes
  55   CHECK(size % 4 == 0);
  56   data_.resize(size);
  57 }
  58
  59 void Parcel::SetDataPosition(size_t pos) {
  60   CHECK(pos < DataSize());
  61   data_position_ = pos;
  62 }
  63
  64 size_t Parcel::DataPosition() const {
  65   return data_position_;
  66 }
  67
  68 void Parcel::Print() const {
  69   for (size_t i = 0; i < data_.size(); i += 4) {
  70     ALOG("%0x %0x %0x %0x", data_[i], data_[i+1], data_[i+2], data_[i+3]);
  71   }
  72 }
  73
  74 }  // namespace minibind