blob: 2f5a8b16209ce8da07df50213e9ac14c4c1c6c5a [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 <openssl/base.h>
namespace bssl::der {
std::string Input::AsString() const { return std::string(AsStringView()); }
bool operator==(Input lhs, Input rhs) { return Span(lhs) == Span(rhs); }
bool operator!=(Input lhs, Input rhs) { return !(lhs == rhs); }
ByteReader::ByteReader(Input in) : data_(in) {}
bool ByteReader::ReadByte(uint8_t *byte_p) {
if (!HasMore()) {
return false;
}
*byte_p = data_[0];
Advance(1);
return true;
}
bool ByteReader::ReadBytes(size_t len, Input *out) {
if (len > data_.size()) {
return false;
}
*out = Input(data_.first(len));
Advance(len);
return true;
}
// Returns whether there is any more data to be read.
bool ByteReader::HasMore() { return !data_.empty(); }
void ByteReader::Advance(size_t len) {
BSSL_CHECK(len <= data_.size());
data_ = data_.subspan(len);
}
} // namespace bssl::der