Convert line endings at installation

Author: dg0yt

CMakeLists.txt

@@ -66,6 +66,13 @@ if(MAKE_BUNDLE)
 	  DESTINATION "${CMAKE_INSTALL_DOCDIR}/licensing"
 	)
 endif()
+if(WIN32)
+	include("unix2dos")
+	unix2dos_installed(
+	  "${CMAKE_INSTALL_DOCDIR}/*"
+	  "${CMAKE_INSTALL_DOCDIR}/licensing/*"
+	)
+endif()
 
 
 # Actual build

cmake/licensing_helper.cmake

@@ -36,6 +36,9 @@ set(LICENSING_OPTIONAL_ITEMS "" CACHE STRING
   "List of items which may be deployed even when licensing documentation is absent"
 )
 
+# Import unix2dos configuration
+include("unix2dos")
+
 
 # Deploy 3rd-party copyright, terms etc. 
 # The app name can be followed by the filenames of its explicit license texts as

cmake/licensing_helper_install.cmake.in

@@ -86,6 +86,9 @@ endfunction()
 function(LICENSING_HELPER_DEPLOY_COPYRIGHT app)
 	set(licensing_dir "$ENV{DESTDIR}${CMAKE_INSTALL_FULL_DOCDIR}/licensing")
 	file(INSTALL ${ARGN} DESTINATION "${licensing_dir}")
+	handle_crosscompiling()
+	include("unix2dos")
+	unix2dos("${licensing_dir}/*")
 endfunction()
 
 
@@ -111,6 +114,9 @@ endfunction()
 function(LICENSING_HELPER_DEPLOY_COMMON app)
 	set(common_dir "$ENV{DESTDIR}${CMAKE_INSTALL_FULL_DOCDIR}/licensing/common-licenses")
 	file(INSTALL ${ARGN} DESTINATION "${common_dir}")
+	handle_crosscompiling()
+	include("unix2dos")
+	unix2dos("${common_dir}/*")
 endfunction()
 
 
@@ -144,6 +150,10 @@ set(LICENSING_OPTIONAL_ITEMS "@LICENSING_OPTIONAL_ITEMS@")
 set(LICENSING_COPYRIGHT_DIR "@LICENSING_COPYRIGHT_DIR@")
 set(LICENSING_COMMON_DIR "@LICENSING_COMMON_DIR@")
 
+set(UNIX2DOS_COMMAND "@UNIX2DOS_COMMAND@")
+set(UNIX2DOS_SED_COMMAND "@UNIX2DOS_SED_COMMAND@")
+list(APPEND CMAKE_MODULE_PATH "@PROJECT_SOURCE_DIR@/cmake")
+
 set(CMAKE_INSTALL_BINDIR "@CMAKE_INSTALL_BINDIR@")
 set(CMAKE_INSTALL_LIBDIR "@CMAKE_INSTALL_LIBDIR@")
 set(CMAKE_INSTALL_DOCDIR "@CMAKE_INSTALL_DOCDIR@")

cmake/unix2dos.cmake

@@ -0,0 +1,77 @@
+#
+#    Copyright 2019 Kai Pastor
+#    
+#    This file is part of OpenOrienteering.
+# 
+#    OpenOrienteering 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 3 of the License, or
+#    (at your option) any later version.
+# 
+#    OpenOrienteering 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 OpenOrienteering.  If not, see <http://www.gnu.org/licenses/>.
+
+
+if(COMMAND unix2dos)
+	# include guard
+	return()
+elseif(NOT WIN32)
+	# no-op if not building for Windows
+	function(UNIX2DOS)
+	endfunction()
+	function(UNIX2DOS_INSTALLED)
+	endfunction()
+	return()
+endif()
+
+
+message(STATUS "Enabling unix2dos")
+
+find_program(UNIX2DOS_COMMAND
+  NAMES unix2dos
+  DOC "Filepath of the unix2dos executable"
+)
+find_program(SED_COMMAND
+  NAMES gsed sed
+  DOC "Filepath of the sed executable"
+)
+if(NOT UNIX2DOS_COMMAND AND NOT SED_COMMAND)
+	message(WARNING "unix2dos or sed are required to convert text files for Windows")
+endif()
+mark_as_advanced(UNIX2DOS_COMMAND)
+mark_as_advanced(UNIX2DOS_SED_COMMAND)
+
+
+# On Windows, convert the files matching the given pattern from UNIX to Windows
+# line endings. Cf. CMake's file(GLOB ...) for the pattern syntax
+function(UNIX2DOS)
+	file(GLOB files ${ARGN} LIST_DIRECTORIES false)
+	foreach(file ${files})
+		if(UNIX2DOS_COMMAND)
+			execute_process(COMMAND "${UNIX2DOS_COMMAND}" -ascii --quiet "${file}")
+		elseif(UNIX2DOS_SED_COMMAND)
+			execute_process(
+			  COMMAND "${UNIX2DOS_SED_COMMAND}" -e "s,\\r*$,\\r," -i -- "${file}"
+			  COMMAND "${CMAKE_COMMAND}" -E remove -f "${file}--"
+			)
+		endif()
+	endforeach()
+endfunction()
+
+
+function(UNIX2DOS_INSTALLED)
+	set(code
+	  "list(APPEND CMAKE_MODULE_PATH \"${PROJECT_SOURCE_DIR}/cmake\")"
+	  "include(\"unix2dos\")"
+	)
+	foreach(pattern ${ARGN})
+		list(APPEND code "unix2dos(\"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${pattern}\")")
+	endforeach()
+	string(REPLACE ";" "\n  " code "${code}")
+	install(CODE "${code}")
+endfunction()