| // 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 |