Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kcodecs/source/src/kcodecsqp.h

@@ -0,0 +1,228 @@
+/*  -*- c++ -*-
+    SPDX-FileCopyrightText: 2001-2002 Marc Mutz <mutz@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+/**
+  @file
+  This file is part of the API for handling @ref MIME data and
+  defines the @ref QuotedPrintable, @ref  RFC2047Q, and
+  @ref RFC2231 @ref Codec classes.
+
+  @brief
+  Defines the classes QuotedPrintableCodec, Rfc2047QEncodingCodec, and
+  Rfc2231EncodingCodec.
+
+  @authors Marc Mutz \<mutz@kde.org\>
+
+  @glossary @anchor QuotedPrintable @anchor quotedprintable @b quoted-printable:
+  a binary to text encoding scheme based on Section 6.7 of @ref RFC2045.
+
+  @glossary @anchor RFC2047Q @anchor rfc2047q @b RFC @b 2047Q:
+  Section 4.2 of @ref RFC2047.
+
+  @glossary @anchor RFC2231 @anchor rfc2231 @b RFC @b 2231:
+  RFC that defines the <a href="http://tools.ietf.org/html/rfc2231">
+  MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages,
+  and Continuations</a>.
+*/
+
+#ifndef KCODECS_QP_H
+#define KCODECS_QP_H
+
+#include "kcodecs.h"
+
+namespace KCodecs
+{
+/**
+  @brief
+  A class representing the @ref codec for @ref QuotedPrintable as specified in
+  @ref RFC2045 (section 6.7).
+*/
+class QuotedPrintableCodec : public Codec
+{
+public:
+    /**
+      Constructs a QuotedPrintable codec.
+    */
+    QuotedPrintableCodec()
+        : Codec()
+    {
+    }
+
+    /**
+      Destroys the codec.
+    */
+    ~QuotedPrintableCodec() override
+    {
+    }
+
+    /**
+      @copydoc
+      Codec::name()
+    */
+    const char *name() const override
+    {
+        return "quoted-printable";
+    }
+
+    /**
+      @copydoc
+      Codec::maxEncodedSizeFor()
+    */
+    qsizetype maxEncodedSizeFor(qsizetype insize, NewlineType newline = Codec::NewlineLF) const override
+    {
+        // all chars encoded:
+        qsizetype result = 3 * insize;
+        // then after 25 hexchars comes a soft linebreak: =(\r)\n
+        result += (newline == Codec::NewlineCRLF ? 3 : 2) * (insize / 25);
+
+        return result;
+    }
+
+    /**
+      @copydoc
+      Codec::maxDecodedSizeFor()
+    */
+    qsizetype maxDecodedSizeFor(qsizetype insize, NewlineType newline = Codec::NewlineLF) const override;
+
+    /**
+      @copydoc
+      Codec::makeEncoder()
+    */
+    Encoder *makeEncoder(NewlineType newline = Codec::NewlineLF) const override;
+
+    /**
+      @copydoc
+      Codec::makeDecoder()
+    */
+    Decoder *makeDecoder(NewlineType newline = Codec::NewlineLF) const override;
+};
+
+/**
+  @brief
+  A class representing the @ref codec for the Q encoding as specified
+  in @ref RFC2047Q.
+*/
+class Rfc2047QEncodingCodec : public Codec
+{
+public:
+    /**
+      Constructs a RFC2047Q codec.
+    */
+    Rfc2047QEncodingCodec()
+        : Codec()
+    {
+    }
+
+    /**
+      Destroys the codec.
+    */
+    ~Rfc2047QEncodingCodec() override
+    {
+    }
+
+    /**
+      @copydoc
+      Codec::name()
+    */
+    const char *name() const override
+    {
+        return "q";
+    }
+
+    /**
+      @copydoc
+      Codec::maxEncodedSizeFor()
+    */
+    qsizetype maxEncodedSizeFor(qsizetype insize, Codec::NewlineType newline = Codec::NewlineLF) const override
+    {
+        Q_UNUSED(newline);
+        // this one is simple: We don't do linebreaking, so all that can
+        // happen is that every char needs encoding, so:
+        return 3 * insize;
+    }
+
+    /**
+      @copydoc
+      Codec::maxDecodedSizeFor()
+    */
+    qsizetype maxDecodedSizeFor(qsizetype insize, Codec::NewlineType newline = Codec::NewlineLF) const override;
+
+    /**
+      @copydoc
+      Codec::makeEncoder()
+    */
+    Encoder *makeEncoder(Codec::NewlineType newline = Codec::NewlineLF) const override;
+
+    /**
+      @copydoc
+      Codec::makeDecoder()
+    */
+    Decoder *makeDecoder(Codec::NewlineType newline = Codec::NewlineLF) const override;
+};
+
+/**
+  @brief
+  A class representing the @ref codec for @ref RFC2231.
+*/
+class Rfc2231EncodingCodec : public Codec
+{
+public:
+    /**
+      Constructs a RFC2231 codec.
+    */
+    Rfc2231EncodingCodec()
+        : Codec()
+    {
+    }
+
+    /**
+      Destroys the codec.
+    */
+    ~Rfc2231EncodingCodec() override
+    {
+    }
+
+    /**
+      @copydoc
+      Codec::name()
+    */
+    const char *name() const override
+    {
+        return "x-kmime-rfc2231";
+    }
+
+    /**
+      @copydoc
+      Codec::maxEncodedSizeFor()
+    */
+    qsizetype maxEncodedSizeFor(qsizetype insize, Codec::NewlineType newline = Codec::NewlineLF) const override
+    {
+        Q_UNUSED(newline);
+        // same as for "q" encoding:
+        return 3 * insize;
+    }
+
+    /**
+      @copydoc
+      Codec::maxDecodedSizeFor()
+    */
+    qsizetype maxDecodedSizeFor(qsizetype insize, Codec::NewlineType newline = Codec::NewlineLF) const override;
+
+    /**
+      @copydoc
+      Codec::makeEncoder()
+    */
+    Encoder *makeEncoder(Codec::NewlineType newline = Codec::NewlineLF) const override;
+
+    /**
+      @copydoc
+      Codec::makeDecoder()
+    */
+    Decoder *makeDecoder(Codec::NewlineType newline = Codec::NewlineLF) const override;
+};
+
+} // namespace KCodecs
+
+#endif // KCODECS_QP_H