| //===--- UUID.cpp - UUID generation ---------------------------------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This is an interface over the standard OSF uuid library that gives UUIDs |
| // sane value semantics and operators. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "swift/Basic/UUID.h" |
| |
| // WIN32 doesn't natively support <uuid/uuid.h>. Instead, we use Win32 APIs. |
| #if defined(_WIN32) |
| #define WIN32_LEAN_AND_MEAN |
| #define NOMINMAX |
| #include <objbase.h> |
| #include <string> |
| #else |
| #include <uuid/uuid.h> |
| #endif |
| |
| using namespace swift; |
| |
| swift::UUID::UUID(FromRandom_t) { |
| #if defined(_WIN32) |
| ::UUID uuid; |
| ::CoCreateGuid(&uuid); |
| |
| memcpy(Value, &uuid, Size); |
| #else |
| uuid_generate_random(Value); |
| #endif |
| } |
| |
| swift::UUID::UUID(FromTime_t) { |
| #if defined(_WIN32) |
| ::GUID uuid; |
| ::CoCreateGuid(&uuid); |
| |
| memcpy(Value, &uuid, Size); |
| #else |
| uuid_generate_time(Value); |
| #endif |
| } |
| |
| swift::UUID::UUID() { |
| #if defined(_WIN32) |
| ::GUID uuid = GUID(); |
| |
| memcpy(Value, &uuid, Size); |
| #else |
| uuid_clear(Value); |
| #endif |
| } |
| |
| Optional<swift::UUID> swift::UUID::fromString(const char *s) { |
| #if defined(_WIN32) |
| int length = strlen(s) + 1; |
| wchar_t *unicodeString = new wchar_t[length]; |
| |
| size_t convertedChars = 0; |
| errno_t conversionResult = |
| mbstowcs_s(&convertedChars, unicodeString, length, s, length); |
| assert(conversionResult == 0 && |
| "expected successful conversion of char* to wchar_t*"); |
| |
| ::GUID uuid; |
| HRESULT parseResult = CLSIDFromString(unicodeString, &uuid); |
| if (parseResult != 0) { |
| return None; |
| } |
| |
| swift::UUID result = UUID(); |
| memcpy(result.Value, &uuid, Size); |
| return result; |
| #else |
| swift::UUID result; |
| if (uuid_parse(s, result.Value)) |
| return None; |
| return result; |
| #endif |
| } |
| |
| void swift::UUID::toString(llvm::SmallVectorImpl<char> &out) const { |
| out.resize(UUID::StringBufferSize); |
| #if defined(_WIN32) |
| ::GUID uuid; |
| memcpy(&uuid, Value, Size); |
| |
| LPOLESTR unicodeStr; |
| StringFromCLSID(uuid, &unicodeStr); |
| |
| char str[StringBufferSize]; |
| int strLen = wcstombs(str, unicodeStr, sizeof(str)); |
| |
| assert(strLen == 37 && "expected ascii convertible output from StringFromCLSID."); |
| (void)strLen; |
| |
| memcpy(out.data(), str, StringBufferSize); |
| #else |
| uuid_unparse_upper(Value, out.data()); |
| #endif |
| // Pop off the null terminator. |
| assert(out.back() == '\0' && "did not null-terminate?!"); |
| out.pop_back(); |
| } |
| |
| int swift::UUID::compare(UUID y) const { |
| #if defined(_WIN32) |
| ::GUID uuid1; |
| memcpy(&uuid1, Value, Size); |
| |
| ::GUID uuid2; |
| memcpy(&uuid2, y.Value, Size); |
| |
| return memcmp(Value, y.Value, Size); |
| #else |
| return uuid_compare(Value, y.Value); |
| #endif |
| } |
| |
| llvm::raw_ostream &swift::operator<<(llvm::raw_ostream &os, UUID uuid) { |
| llvm::SmallString<UUID::StringBufferSize> buf; |
| uuid.toString(buf); |
| os << buf; |
| return os; |
| } |