Reduced the messagetreeparser to aproximately what we actually require

While in a much more managable state it's still not pretty.
However, further refactoring can now gradually happen as we need to do
further work on it.

Things that should happen eventually:
* Simplify the logic that creates the messageparts (we don't need the  whole formatter plugin complexity)
* Get rid of the nodehelper (let the parts hold the necessary data)
* Get rid of partmetadata (let the part handleit)

1 files changed, 179 insertions, 0 deletions

diff --git a/framework/src/domain/mime/mimetreeparser/bodypartformatterbasefactory.cpp b/framework/src/domain/mime/mimetreeparser/bodypartformatterbasefactory.cpp
new file mode 100644
index 00000000..fb02945b
--- /dev/null
+++ b/framework/src/domain/mime/mimetreeparser/bodypartformatterbasefactory.cpp
@@ -0,0 +1,179 @@
+/*
+    bodypartformatterfactory.cpp
+
+    This file is part of KMail, the KDE mail client.
+    Copyright (c) 2004 Marc Mutz <mutz@kde.org>,
+                       Ingo Kloecker <kloecker@kde.org>
+
+    KMail is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    KMail is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of this program with any edition of
+    the Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), and distribute linked
+    combinations including the two.  You must obey the GNU General
+    Public License in all respects for all of the code used other than
+    Qt.  If you modify this file, you may extend this exception to
+    your version of the file, but you are not obligated to do so.  If
+    you do not wish to do so, delete this exception statement from
+    your version.
+*/
+
+#include "bodypartformatterbasefactory.h"
+#include "bodypartformatterbasefactory_p.h"
+#include "mimetreeparser_debug.h"
+
+// Qt
+
+#include <assert.h>
+
+using namespace MimeTreeParser;
+
+BodyPartFormatterBaseFactoryPrivate::BodyPartFormatterBaseFactoryPrivate(BodyPartFormatterBaseFactory *factory)
+    : q(factory)
+    , all(nullptr)
+{
+}
+
+BodyPartFormatterBaseFactoryPrivate::~BodyPartFormatterBaseFactoryPrivate()
+{
+    if (all) {
+        delete all;
+        all = nullptr;
+    }
+}
+
+void BodyPartFormatterBaseFactoryPrivate::setup()
+{
+    if (!all) {
+        all = new TypeRegistry();
+        messageviewer_create_builtin_bodypart_formatters();
+        q->loadPlugins();
+    }
+}
+
+void BodyPartFormatterBaseFactoryPrivate::insert(const char *type, const char *subtype, const Interface::BodyPartFormatter *formatter)
+{
+    if (!type || !*type || !subtype || !*subtype || !formatter || !all) {
+        return;
+    }
+
+    TypeRegistry::iterator type_it = all->find(type);
+    if (type_it == all->end()) {
+        qCDebug(MIMETREEPARSER_LOG) << "BodyPartFormatterBaseFactory: instantiating new Subtype Registry for \""
+                                    << type << "\"";
+        type_it = all->insert(std::make_pair(type, SubtypeRegistry())).first;
+        assert(type_it != all->end());
+    }
+
+    SubtypeRegistry &subtype_reg = type_it->second;
+
+    subtype_reg.insert(std::make_pair(subtype, formatter));
+}
+
+BodyPartFormatterBaseFactory::BodyPartFormatterBaseFactory()
+    : d(new BodyPartFormatterBaseFactoryPrivate(this))
+{
+}
+
+BodyPartFormatterBaseFactory::~BodyPartFormatterBaseFactory()
+{
+    delete d;
+}
+
+void BodyPartFormatterBaseFactory::insert(const char *type, const char *subtype, const Interface::BodyPartFormatter *formatter)
+{
+    d->insert(type, subtype, formatter);
+}
+
+const SubtypeRegistry &BodyPartFormatterBaseFactory::subtypeRegistry(const char *type) const
+{
+    if (!type || !*type) {
+        type = "*";    //krazy:exclude=doublequote_chars
+    }
+
+    d->setup();
+    assert(d->all);
+
+    static SubtypeRegistry emptyRegistry;
+    if (d->all->empty()) {
+        return emptyRegistry;
+    }
+
+    TypeRegistry::const_iterator type_it = d->all->find(type);
+    if (type_it == d->all->end()) {
+        type_it = d->all->find("*");
+    }
+    if (type_it == d->all->end()) {
+        return emptyRegistry;
+    }
+
+    const SubtypeRegistry &subtype_reg = type_it->second;
+    if (subtype_reg.empty()) {
+        return emptyRegistry;
+    }
+    return subtype_reg;
+}
+
+SubtypeRegistry::const_iterator BodyPartFormatterBaseFactory::createForIterator(const char *type, const char *subtype) const
+{
+    if (!type || !*type) {
+        type = "*";    //krazy:exclude=doublequote_chars
+    }
+    if (!subtype || !*subtype) {
+        subtype = "*";    //krazy:exclude=doublequote_chars
+    }
+
+    d->setup();
+    assert(d->all);
+
+    if (d->all->empty()) {
+        return SubtypeRegistry::const_iterator();
+    }
+
+    TypeRegistry::const_iterator type_it = d->all->find(type);
+    if (type_it == d->all->end()) {
+        type_it = d->all->find("*");
+    }
+    if (type_it == d->all->end()) {
+        return SubtypeRegistry::const_iterator();
+    }
+
+    const SubtypeRegistry &subtype_reg = type_it->second;
+    if (subtype_reg.empty()) {
+        return SubtypeRegistry::const_iterator();
+    }
+
+    SubtypeRegistry::const_iterator subtype_it = subtype_reg.find(subtype);
+    qCWarning(MIMETREEPARSER_LOG) << type << subtype << subtype_reg.size();
+    if (subtype_it == subtype_reg.end()) {
+        subtype_it = subtype_reg.find("*");
+    }
+    if (subtype_it == subtype_reg.end()) {
+        return SubtypeRegistry::const_iterator();
+    }
+
+    if (!(*subtype_it).second) {
+        qCWarning(MIMETREEPARSER_LOG) << "BodyPartFormatterBaseFactory: a null bodypart formatter sneaked in for \""
+                                      << type << "/" << subtype << "\"!";
+    }
+
+    return subtype_it;
+}
+
+void BodyPartFormatterBaseFactory::loadPlugins()
+{
+    qCDebug(MIMETREEPARSER_LOG) << "plugin loading is not enabled in libmimetreeparser";
+}