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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/region_capture_crop_id.h"
#include <inttypes.h>
#include <string>
#include <string_view>
#include "base/strings/strcat.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
namespace blink {
base::Token GUIDToToken(const base::Uuid& guid) {
std::string lowercase = guid.AsLowercaseString();
// |lowercase| is either empty, or follows the expected pattern.
// TODO(crbug.com/1260380): Resolve open question of correct treatment
// of an invalid GUID.
if (lowercase.empty()) {
return base::Token();
}
DCHECK_EQ(lowercase.length(), 32u + 4u); // 32 hex-chars; 4 hyphens.
base::RemoveChars(lowercase, "-", &lowercase);
DCHECK_EQ(lowercase.length(), 32u); // 32 hex-chars; 0 hyphens.
std::string_view string_piece(lowercase);
uint64_t high = 0;
bool success = base::HexStringToUInt64(string_piece.substr(0, 16), &high);
DCHECK(success);
uint64_t low = 0;
success = base::HexStringToUInt64(string_piece.substr(16, 16), &low);
DCHECK(success);
return base::Token(high, low);
}
base::Uuid TokenToGUID(const base::Token& token) {
const std::string hex_str = base::StringPrintf("%016" PRIx64 "%016" PRIx64,
token.high(), token.low());
const std::string_view hex_string_piece(hex_str);
const std::string lowercase = base::StrCat(
{hex_string_piece.substr(0, 8), "-", hex_string_piece.substr(8, 4), "-",
hex_string_piece.substr(12, 4), "-", hex_string_piece.substr(16, 4), "-",
hex_string_piece.substr(20, 12)});
return base::Uuid::ParseLowercase(lowercase);
}
} // namespace blink
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