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: */