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Diffstat (limited to 'include/tools/Guid.hxx')
| -rw-r--r-- | include/tools/Guid.hxx | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/include/tools/Guid.hxx b/include/tools/Guid.hxx new file mode 100644 index 000000000..3922a3da9 --- /dev/null +++ b/include/tools/Guid.hxx @@ -0,0 +1,165 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#pragma once + +#include <array> +#include <rtl/uuid.h> +#include <rtl/string.hxx> +#include <rtl/ustring.hxx> +#include <algorithm> +#include <stdio.h> +#include <cctype> + +namespace tools +{ +class Guid +{ +private: + typedef std::array<sal_uInt8, 16> GuidArrayType; + + GuidArrayType maGuidArray; + + static sal_uInt8 gethex(char nChar) + { + if (nChar >= '0' && nChar <= '9') + return nChar - '0'; + else if (nChar >= 'a' && nChar <= 'f') + return nChar - 'a' + 10; + else if (nChar >= 'A' && nChar <= 'F') + return nChar - 'A' + 10; + else + return 0; + } + + static sal_uInt8 covertHexChar(char high, char low) + { + return (gethex(high) << 4) + gethex(low); + } + + void parse(std::string_view rString) + { + if (rString.size() != 38) + return; + + if (rString[0] != '{' || rString[37] != '}' || rString[9] != '-' || rString[14] != '-' + || rString[19] != '-' || rString[24] != '-') + return; + + for (size_t x = 1; x <= 8; x++) + if (!std::isxdigit(rString[x])) + return; + for (size_t x = 10; x <= 13; x++) + if (!std::isxdigit(rString[x])) + return; + for (size_t x = 15; x <= 18; x++) + if (!std::isxdigit(rString[x])) + return; + for (size_t x = 20; x <= 23; x++) + if (!std::isxdigit(rString[x])) + return; + for (size_t x = 25; x <= 36; x++) + if (!std::isxdigit(rString[x])) + return; + + maGuidArray[0] = covertHexChar(rString[1], rString[2]); + maGuidArray[1] = covertHexChar(rString[3], rString[4]); + maGuidArray[2] = covertHexChar(rString[5], rString[6]); + maGuidArray[3] = covertHexChar(rString[7], rString[8]); + + maGuidArray[4] = covertHexChar(rString[10], rString[11]); + maGuidArray[5] = covertHexChar(rString[12], rString[13]); + + maGuidArray[6] = covertHexChar(rString[15], rString[16]); + maGuidArray[7] = covertHexChar(rString[17], rString[18]); + + maGuidArray[8] = covertHexChar(rString[20], rString[21]); + maGuidArray[9] = covertHexChar(rString[22], rString[23]); + + maGuidArray[10] = covertHexChar(rString[25], rString[26]); + maGuidArray[11] = covertHexChar(rString[27], rString[28]); + maGuidArray[12] = covertHexChar(rString[29], rString[30]); + maGuidArray[13] = covertHexChar(rString[31], rString[32]); + maGuidArray[14] = covertHexChar(rString[33], rString[34]); + maGuidArray[15] = covertHexChar(rString[35], rString[36]); + } + +public: + /// GenerateTag is used as a flag for generating the GUID + enum GenerateTag + { + Generate = 0 + }; + + /// Constructor which generates the GUID + Guid(enum GenerateTag) { rtl_createUuid(maGuidArray.data(), nullptr, false); } + + /// Default constructor which initializes the values to 0 (empty GUID) + Guid() { maGuidArray.fill(0); } + + /// parse the GUID from the string + Guid(std::string_view rString) + { + maGuidArray.fill(0); + parse(rString); + } + + /// set the GUID from an array + Guid(const sal_uInt8 aGuidArray[16]) + { + std::copy(aGuidArray, aGuidArray + 16, maGuidArray.begin()); + } + + Guid(Guid&&) = delete; + + Guid(Guid const& rOther) { *this = rOther; } + + void operator=(Guid const& rOther) { std::copy(rOther.cbegin(), rOther.cend(), begin()); } + + bool isEmpty() { return *std::max_element(maGuidArray.begin(), maGuidArray.end()) == 0; } + + GuidArrayType::iterator begin() { return maGuidArray.begin(); } + GuidArrayType::iterator end() { return maGuidArray.end(); } + GuidArrayType::const_iterator cbegin() const { return maGuidArray.cbegin(); } + GuidArrayType::const_iterator cend() const { return maGuidArray.cend(); } + + OString getString() const + { + char sBuffer[40]; + snprintf(sBuffer, sizeof(sBuffer), + "{%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X}", + maGuidArray[0], maGuidArray[1], maGuidArray[2], maGuidArray[3], maGuidArray[4], + maGuidArray[5], maGuidArray[6], maGuidArray[7], maGuidArray[8], maGuidArray[9], + maGuidArray[10], maGuidArray[11], maGuidArray[12], maGuidArray[13], + maGuidArray[14], maGuidArray[15]); + + return OString(sBuffer); + } + + OUString getOUString() { return OStringToOUString(getString(), RTL_TEXTENCODING_ASCII_US); } + + bool operator==(Guid const& rCompare) const + { + return rtl_compareUuid(maGuidArray.data(), rCompare.maGuidArray.data()) == 0; + } + + bool operator!=(Guid const& rCompare) const { return !(*this == rCompare); } +}; + +template <typename charT, typename traits> +inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& rStream, + tools::Guid const& rGuid) +{ + OString aString = rGuid.getString(); + rStream << "GUID" << aString.getStr(); + return rStream; +} +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |