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// 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_example.h"
#include <ctype.h>
#include "absl/strings/str_cat.h"
#include "http2/platform/api/http2_bug_tracker.h"
#include "http2/platform/api/http2_logging.h"
#include "http2/platform/api/http2_string_utils.h"
namespace http2 {
namespace test {
namespace {
void HpackExampleToStringOrDie(absl::string_view example, std::string* output) {
while (!example.empty()) {
const char c0 = example[0];
if (isxdigit(c0)) {
QUICHE_CHECK_GT(example.size(), 1u) << "Truncated hex byte?";
const char c1 = example[1];
QUICHE_CHECK(isxdigit(c1)) << "Found half a byte?";
*output += Http2HexDecode(example.substr(0, 2));
example.remove_prefix(2);
continue;
}
if (isspace(c0)) {
example.remove_prefix(1);
continue;
}
if (!example.empty() && example[0] == '|') {
// Start of a comment. Skip to end of line or of input.
auto pos = example.find('\n');
if (pos == absl::string_view::npos) {
// End of input.
break;
}
example.remove_prefix(pos + 1);
continue;
}
HTTP2_BUG(http2_bug_107_1)
<< "Can't parse byte " << static_cast<int>(c0)
<< absl::StrCat(" (0x", absl::Hex(c0), ")") << "\nExample: " << example;
}
QUICHE_CHECK_LT(0u, output->size()) << "Example is empty.";
}
} // namespace
std::string HpackExampleToStringOrDie(absl::string_view example) {
std::string output;
HpackExampleToStringOrDie(example, &output);
return output;
}
} // namespace test
} // namespace http2
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