[FEATURE] DWG import into geopackage using libdxfrw

src/app/CMakeLists.txt

@@ -1,3 +1,5 @@
+ADD_SUBDIRECTORY(dwg/libdxfrw)
+
 SET(QGIS_APP_SRCS
   qgisapp.cpp
   qgisappinterface.cpp
@@ -166,6 +168,9 @@ SET(QGIS_APP_SRCS
   openstreetmap/qgsosmimportdialog.cpp
   openstreetmap/qgsosmexportdialog.cpp
 
+  dwg/qgsdwgimportdialog.cpp
+  dwg/qgsdwgimporter.cpp
+
   pluginmanager/qgspluginmanager.cpp
   pluginmanager/qgspluginmanager_texts.cpp
   pluginmanager/qgsapppluginmanagerinterface.cpp
@@ -338,6 +343,8 @@ SET (QGIS_APP_MOC_HDRS
   openstreetmap/qgsosmimportdialog.h
   openstreetmap/qgsosmexportdialog.h
 
+  dwg/qgsdwgimportdialog.h
+
   pluginmanager/qgspluginmanager.h
   pluginmanager/qgsapppluginmanagerinterface.h
   pluginmanager/qgspluginsortfilterproxymodel.h
@@ -559,6 +566,8 @@ INCLUDE_DIRECTORIES(
   ../python
   gps
   openstreetmap
+  dwg
+  dwg/libdxfrw
 )
 INCLUDE_DIRECTORIES(SYSTEM
   ${SPATIALITE_INCLUDE_DIR}
@@ -592,7 +601,8 @@ ENDIF (ANDROID)
 REMOVE_DEFINITIONS("-DAPP_EXPORT=${DLLIMPORT}")
 ADD_DEFINITIONS("\"-DAPP_EXPORT=${DLLEXPORT}\"")
 
-# Putting IMAGE_RCC_SRCS into qgis_app lib is cousing problems when the lib is loaded (by plugin for example) in test unit (qgis_composerpicturetest).
+# Putting IMAGE_RCC_SRCS into qgis_app lib is causing problems when the lib is
+# loaded (by plugin for example) in test unit (qgis_composerpicturetest).
 ADD_LIBRARY(qgis_app SHARED ${QGIS_APP_SRCS} ${QGIS_APP_MOC_SRCS} ${QGIS_APP_HDRS} ${QGIS_APP_MOC_HDRS})
 
 TARGET_LINK_LIBRARIES(qgis_app
@@ -607,6 +617,7 @@ TARGET_LINK_LIBRARIES(qgis_app
   qgis_core
   qgis_gui
   qgis_analysis
+  libdxfrw
 )
 
 IF (NOT ANDROID)

src/app/dwg/libdxfrw/CMakeLists.txt

@@ -0,0 +1,82 @@
+INCLUDE_DIRECTORIES(
+    ${CMAKE_SOURCE_DIR}/src/core
+    ${QT_INCLUDE_DIR}
+)
+
+ADD_LIBRARY(libdxfrw STATIC
+    drw_classes.cpp
+    drw_entities.cpp
+    drw_header.cpp
+    drw_objects.cpp
+    libdwgr.cpp
+    libdxfrw.cpp
+    intern/drw_dbg.cpp
+    intern/drw_textcodec.cpp
+    intern/dwgbuffer.cpp
+    intern/dwgreader.cpp
+    intern/dwgreader15.cpp
+    intern/dwgreader18.cpp
+    intern/dwgreader21.cpp
+    intern/dwgreader24.cpp
+    intern/dwgreader27.cpp
+    intern/dwgutil.cpp
+    intern/dxfreader.cpp
+    intern/dxfwriter.cpp
+    intern/rscodec.cpp
+)
+SET_PROPERTY(TARGET libdxfrw PROPERTY POSITION_INDEPENDENT_CODE ON)
+
+IF(FALSE)
+IF(DOXYGEN_FOUND)
+  ADD_CUSTOM_TARGET(doxygen-dxfrw ALL
+    COMMAND ${DOXYGEN_EXECUTABLE} libdxfrw.dox
+      drw_base.h
+      drw_classes.cpp
+      drw_classes.h
+      drw_entities.cpp
+      drw_entities.h
+      drw_header.cpp
+      drw_header.h
+      drw_interface.h
+      drw_objects.cpp
+      drw_objects.h
+      libdwgr.cpp
+      libdwgr.h
+      libdxfrw.cpp
+      libdxfrw.h
+      intern/drw_cptable932.h
+      intern/drw_cptable936.h
+      intern/drw_cptable949.h
+      intern/drw_cptable950.h
+      intern/drw_cptables.h
+      intern/drw_dbg.cpp
+      intern/drw_dbg.h
+      intern/drw_textcodec.cpp
+      intern/drw_textcodec.h
+      intern/dwgbuffer.cpp
+      intern/dwgbuffer.h
+      intern/dwgreader.cpp
+      intern/dwgreader.h
+      intern/dwgreader15.cpp
+      intern/dwgreader15.h
+      intern/dwgreader18.cpp
+      intern/dwgreader18.h
+      intern/dwgreader21.cpp
+      intern/dwgreader21.h
+      intern/dwgreader24.cpp
+      intern/dwgreader24.h
+      intern/dwgreader27.cpp
+      intern/dwgreader27.h
+      intern/dwgutil.cpp
+      intern/dwgutil.h
+      intern/dxfreader.cpp
+      intern/dxfreader.h
+      intern/dxfwriter.cpp
+      intern/dxfwriter.h
+      intern/rscodec.cpp
+      intern/rscodec.h
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    DEPENDS libdxfrw
+    COMMENT "Generating libdxfrw documentation" VERBATIM)
+ENDIF(DOXYGEN_FOUND)
+ENDIF(FALSE)