Add new HTTP/2 and HPACK decoder in net/http2/.

net/http2/hpack/decoder/hpack_string_collector.cc

Index: net/http2/hpack/decoder/hpack_string_collector.cc
diff --git a/net/http2/hpack/decoder/hpack_string_collector.cc b/net/http2/hpack/decoder/hpack_string_collector.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e7e8195f748a96760c86cbba4b9bd5c282c93396
--- /dev/null
+++ b/net/http2/hpack/decoder/hpack_string_collector.cc
@@ -0,0 +1,127 @@
+// 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 "net/http2/hpack/decoder/hpack_string_collector.h"
+
+#include <stddef.h>
+
+#include <iosfwd>
+#include <ostream>
+#include <string>
+
+#include "net/base/escape.h"
+#include "net/http2/tools/failure.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using base::StringPiece;
+
+namespace net {
+namespace test {
+namespace {
+
+std::ostream& operator<<(std::ostream& out,
+                         HpackStringCollector::CollectorState v) {
+  switch (v) {
+    case HpackStringCollector::CollectorState::kGenesis:
+      return out << "kGenesis";
+    case HpackStringCollector::CollectorState::kStarted:
+      return out << "kStarted";
+    case HpackStringCollector::CollectorState::kEnded:
+      return out << "kEnded";
+  }
+  return out << "UnknownCollectorState";
+}
+
+}  // namespace
+
+HpackStringCollector::HpackStringCollector() {
+  Clear();
+}
+
+HpackStringCollector::HpackStringCollector(const std::string& str, bool huffman)
+    : s(str), len(str.size()), huffman_encoded(huffman), state(kEnded) {}
+
+void HpackStringCollector::Clear() {
+  s = "";
+  len = 0;
+  huffman_encoded = false;
+  state = kGenesis;
+}
+
+bool HpackStringCollector::IsClear() const {
+  return s == "" && len == 0 && huffman_encoded == false && state == kGenesis;
+}
+
+bool HpackStringCollector::IsInProgress() const {
+  return state == kStarted;
+}
+
+bool HpackStringCollector::HasEnded() const {
+  return state == kEnded;
+}
+
+void HpackStringCollector::OnStringStart(bool huffman, size_t length) {
+  EXPECT_TRUE(IsClear()) << ToString();
+  state = kStarted;
+  huffman_encoded = huffman;
+  len = length;
+  return;
+}
+
+void HpackStringCollector::OnStringData(const char* data, size_t length) {
+  StringPiece sp(data, length);
+  EXPECT_TRUE(IsInProgress()) << ToString();
+  EXPECT_LE(sp.size(), len) << ToString();
+  sp.AppendToString(&s);
+  EXPECT_LE(s.size(), len) << ToString();
+}
+
+void HpackStringCollector::OnStringEnd() {
+  EXPECT_TRUE(IsInProgress()) << ToString();
+  EXPECT_EQ(s.size(), len) << ToString();
+  state = kEnded;
+}
+
+::testing::AssertionResult HpackStringCollector::Collected(
+    StringPiece str,
+    bool is_huffman_encoded) const {
+  VERIFY_TRUE(HasEnded());
+  VERIFY_EQ(str.size(), len);
+  VERIFY_EQ(is_huffman_encoded, huffman_encoded);
+  VERIFY_EQ(str, s);
+  return ::testing::AssertionSuccess();
+}
+
+std::string HpackStringCollector::ToString() const {
+  std::stringstream ss;
+  ss << *this;
+  return ss.str();
+}
+
+bool operator==(const HpackStringCollector& a, const HpackStringCollector& b) {
+  return a.s == b.s && a.len == b.len &&
+         a.huffman_encoded == b.huffman_encoded && a.state == b.state;
+}
+
+bool operator!=(const HpackStringCollector& a, const HpackStringCollector& b) {
+  return !(a == b);
+}
+
+std::ostream& operator<<(std::ostream& out, const HpackStringCollector& v) {
+  out << "HpackStringCollector(state=" << v.state;
+  if (v.state == HpackStringCollector::kGenesis) {
+    return out << ")";
+  }
+  if (v.huffman_encoded) {
+    out << ", Huffman Encoded";
+  }
+  out << ", Length=" << v.len;
+  if (!v.s.empty() && v.len != v.s.size()) {
+    out << " (" << v.s.size() << ")";
+  }
+  return out << ", String=\"" << EscapeQueryParamValue(v.s, false) << "\")";
+}
+
+}  // namespace test
+}  // namespace net