1*7ba4dab5SXin Li /*
2*7ba4dab5SXin Li * Copyright (C) 2016 The Android Open Source Project
3*7ba4dab5SXin Li *
4*7ba4dab5SXin Li * Licensed under the Apache License, Version 2.0 (the "License");
5*7ba4dab5SXin Li * you may not use this file except in compliance with the License.
6*7ba4dab5SXin Li * You may obtain a copy of the License at
7*7ba4dab5SXin Li *
8*7ba4dab5SXin Li * http://www.apache.org/licenses/LICENSE-2.0
9*7ba4dab5SXin Li *
10*7ba4dab5SXin Li * Unless required by applicable law or agreed to in writing, software
11*7ba4dab5SXin Li * distributed under the License is distributed on an "AS IS" BASIS,
12*7ba4dab5SXin Li * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*7ba4dab5SXin Li * See the License for the specific language governing permissions and
14*7ba4dab5SXin Li * limitations under the License.
15*7ba4dab5SXin Li */
16*7ba4dab5SXin Li
17*7ba4dab5SXin Li #include <nvram/messages/blob.h>
18*7ba4dab5SXin Li
19*7ba4dab5SXin Li extern "C" {
20*7ba4dab5SXin Li #include <stdlib.h>
21*7ba4dab5SXin Li #include <string.h>
22*7ba4dab5SXin Li }
23*7ba4dab5SXin Li
24*7ba4dab5SXin Li namespace nvram {
25*7ba4dab5SXin Li
Blob()26*7ba4dab5SXin Li Blob::Blob() {}
27*7ba4dab5SXin Li
~Blob()28*7ba4dab5SXin Li Blob::~Blob() {
29*7ba4dab5SXin Li free(data_);
30*7ba4dab5SXin Li data_ = nullptr;
31*7ba4dab5SXin Li size_ = 0;
32*7ba4dab5SXin Li }
33*7ba4dab5SXin Li
Blob(Blob && other)34*7ba4dab5SXin Li Blob::Blob(Blob&& other) : Blob() {
35*7ba4dab5SXin Li swap(*this, other);
36*7ba4dab5SXin Li }
37*7ba4dab5SXin Li
operator =(Blob && other)38*7ba4dab5SXin Li Blob& Blob::operator=(Blob&& other) {
39*7ba4dab5SXin Li swap(*this, other);
40*7ba4dab5SXin Li return *this;
41*7ba4dab5SXin Li }
42*7ba4dab5SXin Li
swap(Blob & first,Blob & second)43*7ba4dab5SXin Li void swap(Blob& first, Blob& second) {
44*7ba4dab5SXin Li // This does not use std::swap since it needs to work in environments that are
45*7ba4dab5SXin Li // lacking a standard library.
46*7ba4dab5SXin Li uint8_t* data_tmp = first.data_;
47*7ba4dab5SXin Li size_t size_tmp = first.size_;
48*7ba4dab5SXin Li first.data_ = second.data_;
49*7ba4dab5SXin Li first.size_ = second.size_;
50*7ba4dab5SXin Li second.data_ = data_tmp;
51*7ba4dab5SXin Li second.size_ = size_tmp;
52*7ba4dab5SXin Li }
53*7ba4dab5SXin Li
Assign(const void * data,size_t size)54*7ba4dab5SXin Li bool Blob::Assign(const void* data, size_t size) {
55*7ba4dab5SXin Li free(data_);
56*7ba4dab5SXin Li data_ = static_cast<uint8_t*>(malloc(size));
57*7ba4dab5SXin Li if (!data_) {
58*7ba4dab5SXin Li size_ = 0;
59*7ba4dab5SXin Li return false;
60*7ba4dab5SXin Li }
61*7ba4dab5SXin Li memcpy(data_, data, size);
62*7ba4dab5SXin Li size_ = size;
63*7ba4dab5SXin Li return true;
64*7ba4dab5SXin Li }
65*7ba4dab5SXin Li
Resize(size_t size)66*7ba4dab5SXin Li bool Blob::Resize(size_t size) {
67*7ba4dab5SXin Li uint8_t* tmp_data = static_cast<uint8_t*>(realloc(data_, size));
68*7ba4dab5SXin Li if (size != 0 && !tmp_data) {
69*7ba4dab5SXin Li return false;
70*7ba4dab5SXin Li }
71*7ba4dab5SXin Li
72*7ba4dab5SXin Li data_ = tmp_data;
73*7ba4dab5SXin Li size_ = size;
74*7ba4dab5SXin Li return true;
75*7ba4dab5SXin Li }
76*7ba4dab5SXin Li
77*7ba4dab5SXin Li } // namespace nvram
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