blob: 8f85304b8d5bdf3f9eaa16f06f81740a5721d0cd [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "http2/hpack/tools/hpack_block_builder.h"
#include "http2/hpack/varint/hpack_varint_encoder.h"
#include "http2/platform/api/http2_bug_tracker.h"
#include "common/platform/api/quiche_test.h"
namespace http2 {
namespace test {
void HpackBlockBuilder::AppendHighBitsAndVarint(uint8_t high_bits,
uint8_t prefix_length,
uint64_t varint) {
EXPECT_LE(3, prefix_length);
EXPECT_LE(prefix_length, 8);
HpackVarintEncoder::Encode(high_bits, prefix_length, varint, &buffer_);
}
void HpackBlockBuilder::AppendEntryTypeAndVarint(HpackEntryType entry_type,
uint64_t varint) {
uint8_t high_bits;
uint8_t prefix_length; // Bits of the varint prefix in the first byte.
switch (entry_type) {
case HpackEntryType::kIndexedHeader:
high_bits = 0x80;
prefix_length = 7;
break;
case HpackEntryType::kDynamicTableSizeUpdate:
high_bits = 0x20;
prefix_length = 5;
break;
case HpackEntryType::kIndexedLiteralHeader:
high_bits = 0x40;
prefix_length = 6;
break;
case HpackEntryType::kUnindexedLiteralHeader:
high_bits = 0x00;
prefix_length = 4;
break;
case HpackEntryType::kNeverIndexedLiteralHeader:
high_bits = 0x10;
prefix_length = 4;
break;
default:
HTTP2_BUG << "Unreached, entry_type=" << entry_type;
high_bits = 0;
prefix_length = 0;
break;
}
AppendHighBitsAndVarint(high_bits, prefix_length, varint);
}
void HpackBlockBuilder::AppendString(bool is_huffman_encoded,
absl::string_view str) {
uint8_t high_bits = is_huffman_encoded ? 0x80 : 0;
uint8_t prefix_length = 7;
AppendHighBitsAndVarint(high_bits, prefix_length, str.size());
buffer_.append(str.data(), str.size());
}
} // namespace test
} // namespace http2