[libcalamares] Move PartitionIterator to partition service.

- Starting to centralize utility code for partitioning into
   libcalamares instead of scattered and weirdly shared between
   modules.
 - This particular commit breaks compiling the modules, though.

src/libcalamares/CMakeLists.txt

@@ -97,6 +97,30 @@ if( Qt5Xml_FOUND )
     list( APPEND OPTIONAL_PUBLIC_LIBRARIES Qt5::Network Qt5::Xml )
 endif()
 
+### OPTIONAL KPMcore support
+#
+#
+find_package( KPMcore 3.3 )
+set_package_properties(
+    KPMcore PROPERTIES
+    PURPOSE "For partitioning service"
+)
+
+if ( KPMcore_FOUND )
+    find_package( Qt5 REQUIRED DBus )  # Needed for KPMCore
+    find_package( KF5 REQUIRED I18n WidgetsAddons )  # Needed for KPMCore
+
+    if( KPMcore_VERSION VERSION_GREATER "3.3.70" AND KPMcore_VERSION VERSION_LESS "4.0" )
+        message( FATAL_ERROR "KPMCore beta versions are not supported" )
+    endif()
+
+    include_directories( ${KPMCORE_INCLUDE_DIR} )
+    list( APPEND libSources
+        partition/PartitionIterator.cpp
+    )
+    list( APPEND OPTIONAL_PRIVATE_LIBRARIES kpmcore )
+endif()
+
 ### LIBRARY
 #
 #
@@ -167,13 +191,13 @@ if ( ECM_FOUND AND BUILD_TESTING )
             ${YAMLCPP_LIBRARY}
     )
     calamares_automoc( geoiptest )
-    
+
     ecm_add_test(
             partition/Tests.cpp
         TEST_NAME
             libcalamarespartitiontest
         LINK_LIBRARIES
-            calamares  
+            calamares
             Qt5::Test
     )
     calamares_automoc( libcalamarespartitiontest )

src/libcalamares/partition/PartitionIterator.cpp

@@ -2,7 +2,7 @@
  *
  *   Copyright 2014, Aurélien Gâteau <agateau@kde.org>
  *   Copyright 2015, Teo Mrnjavac <teo@kde.org>
- *   Copyright 2017, Adriaan de Groot <groot@kde.org>
+ *   Copyright 2017, 2019 Adriaan de Groot <groot@kde.org>
  *
  *   Calamares is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -25,21 +25,27 @@
 #include <kpmcore/core/partition.h>
 #include <kpmcore/core/partitiontable.h>
 
+namespace CalamaresUtils
+{
+namespace Partition
+{
+
+using Partition = ::Partition;
+
 PartitionIterator::PartitionIterator( PartitionTable* table )
     : m_table( table )
-{}
-
-Partition*
-PartitionIterator::operator*() const
 {
-    return m_current;
 }
 
+Partition* PartitionIterator::operator*() const { return m_current; }
+
 void
 PartitionIterator::operator++()
 {
     if ( !m_current )
+    {
         return;
+    }
     if ( m_current->hasChildren() )
     {
         // Go to the first child
@@ -78,18 +84,21 @@ PartitionIterator::operator==( const PartitionIterator& other ) const
 bool
 PartitionIterator::operator!=( const PartitionIterator& other ) const
 {
-    return ! ( *this == other );
+    return !( *this == other );
 }
 
 PartitionIterator
 PartitionIterator::begin( Device* device )
 {
     if ( !device )
+    {
         return PartitionIterator( nullptr );
-    Q_ASSERT(device);
+    }
     PartitionTable* table = device->partitionTable();
     if ( !table )
+    {
         return PartitionIterator( nullptr );
+    }
     return PartitionIterator::begin( table );
 }
 
@@ -101,7 +110,9 @@ PartitionIterator::begin( PartitionTable* table )
     // Does not usually happen, but it did happen on a tiny (10MiB) disk with an MBR
     // partition table.
     if ( children.isEmpty() )
+    {
         return it;
+    }
     it.m_current = children.first();
     return it;
 }
@@ -110,10 +121,14 @@ PartitionIterator
 PartitionIterator::end( Device* device )
 {
     if ( !device )
+    {
         return PartitionIterator( nullptr );
+    }
     PartitionTable* table = device->partitionTable();
     if ( !table )
+    {
         return PartitionIterator( nullptr );
+    }
 
     return PartitionIterator::end( table );
 }
@@ -123,3 +138,6 @@ PartitionIterator::end( PartitionTable* table )
 {
     return PartitionIterator( table );
 }
+
+}  // namespace Partition
+}  // namespace CalamaresUtils

src/libcalamares/partition/PartitionIterator.h

@@ -2,6 +2,7 @@
  *
  *   Copyright 2014, Aurélien Gâteau <agateau@kde.org>
  *   Copyright 2015, Teo Mrnjavac <teo@kde.org>
+ *   Copyright 2019, Adriaan de Groot <groot@kde.org>
  *
  *   Calamares is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -17,20 +18,34 @@
  *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef PARTITIONITERATOR_H
-#define PARTITIONITERATOR_H
+#ifndef PARTITION_PARTITIONITERATOR_H
+#define PARTITION_PARTITIONITERATOR_H
 
 class Device;
 class Partition;
 class PartitionTable;
 
-/**
+namespace CalamaresUtils
+{
+namespace Partition
+{
+
+/** @brief Iterator over KPMCore partitions
+ *
  * A forward-only iterator to go through the partitions of a device,
  * independently of whether they are primary, logical or extended.
+ *
+ * An iterator can be created from a device (then it refers to the
+ * partition table of that device) or a partition table. The
+ * partition table must remain valid throughout iteration.
+ *
+ * A nullptr is valid, for an empty iterator.
  */
 class PartitionIterator
 {
 public:
+    using Partition = ::Partition;
+
     Partition* operator*() const;
 
     void operator++();
@@ -50,4 +65,7 @@ private:
     Partition* m_current = nullptr;
 };
 
-#endif /* PARTITIONITERATOR_H */
+}  // namespace Partition
+}  // namespace CalamaresUtils
+
+#endif  // PARTITION_PARTITIONITERATOR_H

src/modules/fsresizer/CMakeLists.txt

@@ -21,7 +21,6 @@ if ( KPMcore_FOUND )
         EXPORT_MACRO PLUGINDLLEXPORT_PRO
         SOURCES
             ResizeFSJob.cpp
-            ${PROJECT_SOURCE_DIR}/src/modules/partition/core/PartitionIterator.cpp
         LINK_PRIVATE_LIBRARIES
             kpmcore
             calamares

src/modules/partition/CMakeLists.txt

@@ -48,7 +48,6 @@ if ( KPMcore_FOUND )
             core/PartitionActions.cpp
             core/PartitionCoreModule.cpp
             core/PartitionInfo.cpp
-            core/PartitionIterator.cpp
             core/PartitionLayout.cpp
             core/PartitionModel.cpp
             core/PartUtils.cpp

src/modules/partition/tests/CMakeLists.txt

@@ -5,7 +5,6 @@ set( PartitionModule_SOURCE_DIR .. )
 set( partitionjobtests_SRCS
     ${PartitionModule_SOURCE_DIR}/core/KPMHelpers.cpp
     ${PartitionModule_SOURCE_DIR}/core/PartitionInfo.cpp
-    ${PartitionModule_SOURCE_DIR}/core/PartitionIterator.cpp
     ${PartitionModule_SOURCE_DIR}/jobs/CreatePartitionJob.cpp
     ${PartitionModule_SOURCE_DIR}/jobs/CreatePartitionTableJob.cpp
     ${PartitionModule_SOURCE_DIR}/jobs/DeletePartitionJob.cpp