1 files changed, 73 insertions, 0 deletions
diff --git a/vcl/source/pdf/PDFiumTools.cxx b/vcl/source/pdf/PDFiumTools.cxx
new file mode 100644
index 000000000..28fa53b83
--- /dev/null
+++ b/vcl/source/pdf/PDFiumTools.cxx
@@ -0,0 +1,73 @@
+/* -*- 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/.
+ *
+ */
+
+#include <vcl/filter/PDFiumLibrary.hxx>
+
+namespace vcl::pdf
+{
+OUString convertPdfDateToISO8601(OUString const& rInput)
+{
+    if (rInput.getLength() < 6)
+        return {};
+
+    std::u16string_view prefix = rInput.subView(0, 2);
+    if (prefix != u"D:")
+        return {};
+
+    std::u16string_view sYear = rInput.subView(2, 4);
+
+    std::u16string_view sMonth(u"01");
+    if (rInput.getLength() >= 8)
+        sMonth = rInput.subView(6, 2);
+
+    std::u16string_view sDay(u"01");
+    if (rInput.getLength() >= 10)
+        sDay = rInput.subView(8, 2);
+
+    std::u16string_view sHours(u"00");
+    if (rInput.getLength() >= 12)
+        sHours = rInput.subView(10, 2);
+
+    std::u16string_view sMinutes(u"00");
+    if (rInput.getLength() >= 14)
+        sMinutes = rInput.subView(12, 2);
+
+    std::u16string_view sSeconds(u"00");
+    if (rInput.getLength() >= 16)
+        sSeconds = rInput.subView(14, 2);
+
+    OUString sTimeZoneMark("Z");
+    if (rInput.getLength() >= 17)
+        sTimeZoneMark = rInput.subView(16, 1);
+
+    std::u16string_view sTimeZoneHours(u"00");
+    std::u16string_view sTimeZoneMinutes(u"00");
+    if ((sTimeZoneMark == "+" || sTimeZoneMark == "-") && rInput.getLength() >= 22)
+    {
+        std::u16string_view sTimeZoneSeparator = rInput.subView(19, 1);
+        if (sTimeZoneSeparator == u"'")
+        {
+            sTimeZoneHours = rInput.subView(17, 2);
+            sTimeZoneMinutes = rInput.subView(20, 2);
+        }
+    }
+
+    OUString sTimeZoneString;
+    if (sTimeZoneMark == "+" || sTimeZoneString == "-")
+        sTimeZoneString = sTimeZoneMark + sTimeZoneHours + ":" + sTimeZoneMinutes;
+    else if (sTimeZoneMark == "Z")
+        sTimeZoneString = sTimeZoneMark;
+
+    return OUString::Concat(sYear) + "-" + sMonth + "-" + sDay + "T" + sHours + ":" + sMinutes + ":"
+           + sSeconds + sTimeZoneString;
+}
+} // end vcl::pdf
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */