blob: a0d8af617a898fc5e9bb81ea54bff9b2e46ad1c1 [file] [log] [blame]
// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "input.h"
#include <algorithm>
#include <openssl/base.h>
namespace bssl::der {
std::string Input::AsString() const {
return std::string(reinterpret_cast<const char *>(data_.data()),
data_.size());
}
std::string_view Input::AsStringView() const {
return std::string_view(reinterpret_cast<const char *>(data_.data()),
data_.size());
}
bssl::Span<const uint8_t> Input::AsSpan() const { return data_; }
bool operator==(const Input &lhs, const Input &rhs) {
return lhs.Length() == rhs.Length() &&
std::equal(lhs.UnsafeData(), lhs.UnsafeData() + lhs.Length(),
rhs.UnsafeData());
}
bool operator!=(const Input &lhs, const Input &rhs) { return !(lhs == rhs); }
ByteReader::ByteReader(const Input &in)
: data_(in.UnsafeData()), len_(in.Length()) {}
bool ByteReader::ReadByte(uint8_t *byte_p) {
if (!HasMore()) {
return false;
}
*byte_p = *data_;
Advance(1);
return true;
}
bool ByteReader::ReadBytes(size_t len, Input *out) {
if (len > len_) {
return false;
}
*out = Input(data_, len);
Advance(len);
return true;
}
// Returns whether there is any more data to be read.
bool ByteReader::HasMore() { return len_ > 0; }
void ByteReader::Advance(size_t len) {
BSSL_CHECK(len <= len_);
data_ += len;
len_ -= len;
}
} // namespace bssl::der