Refactor: Use `list` commands instead of old-way string ops

Modules/Internal/CPack/CPackDeb.cmake

@@ -210,7 +210,7 @@ function(cpack_deb_prepare_package_vars)
       if(_TMP_VERSION MATCHES "dpkg-shlibdeps version ([0-9]+\\.[0-9]+\\.[0-9]+)")
         set(SHLIBDEPS_EXECUTABLE_VERSION "${CMAKE_MATCH_1}")
       else()
-        set(SHLIBDEPS_EXECUTABLE_VERSION "")
+        unset(SHLIBDEPS_EXECUTABLE_VERSION)
       endif()
 
       if(CPACK_DEBIAN_PACKAGE_DEBUG)
@@ -388,7 +388,7 @@ function(cpack_deb_prepare_package_vars)
   # if per-component variable, overrides the global CPACK_DEBIAN_PACKAGE_${variable_type_}
   # automatic dependency discovery will be performed afterwards.
   if(CPACK_DEB_PACKAGE_COMPONENT)
-    foreach(value_type_ DEPENDS RECOMMENDS SUGGESTS PREDEPENDS ENHANCES BREAKS CONFLICTS PROVIDES REPLACES SOURCE SECTION PRIORITY NAME)
+    foreach(value_type_ IN ITEMS DEPENDS RECOMMENDS SUGGESTS PREDEPENDS ENHANCES BREAKS CONFLICTS PROVIDES REPLACES SOURCE SECTION PRIORITY NAME)
       set(_component_var "CPACK_DEBIAN_${_local_component_name}_PACKAGE_${value_type_}")
 
       # if set, overrides the global variable
@@ -402,21 +402,15 @@ function(cpack_deb_prepare_package_vars)
     endforeach()
 
     if(CPACK_DEBIAN_ENABLE_COMPONENT_DEPENDS)
-      set(COMPONENT_DEPENDS "")
-      foreach(_PACK ${CPACK_COMPONENT_${_local_component_name}_DEPENDS})
+      unset(COMPONENT_DEPENDS)
+      foreach(_PACK IN LISTS CPACK_COMPONENT_${_local_component_name}_DEPENDS)
         get_component_package_name(_PACK_NAME "${_PACK}")
-        if(COMPONENT_DEPENDS)
-          set(COMPONENT_DEPENDS "${_PACK_NAME} (= ${CPACK_DEBIAN_PACKAGE_VERSION}), ${COMPONENT_DEPENDS}")
-        else()
-          set(COMPONENT_DEPENDS "${_PACK_NAME} (= ${CPACK_DEBIAN_PACKAGE_VERSION})")
-        endif()
+        list(PREPEND COMPONENT_DEPENDS "${_PACK_NAME} (= ${CPACK_DEBIAN_PACKAGE_VERSION})")
       endforeach()
+      list(JOIN COMPONENT_DEPENDS ", " COMPONENT_DEPENDS)
       if(COMPONENT_DEPENDS)
-        if(CPACK_DEBIAN_PACKAGE_DEPENDS)
-          set(CPACK_DEBIAN_PACKAGE_DEPENDS "${COMPONENT_DEPENDS}, ${CPACK_DEBIAN_PACKAGE_DEPENDS}")
-        else()
-          set(CPACK_DEBIAN_PACKAGE_DEPENDS "${COMPONENT_DEPENDS}")
-        endif()
+        list(PREPEND CPACK_DEBIAN_PACKAGE_DEPENDS ${COMPONENT_DEPENDS})
+        list(JOIN CPACK_DEBIAN_PACKAGE_DEPENDS ", " CPACK_DEBIAN_PACKAGE_DEPENDS)
       endif()
     endif()
   endif()
@@ -424,12 +418,9 @@ function(cpack_deb_prepare_package_vars)
   # at this point, the CPACK_DEBIAN_PACKAGE_DEPENDS is properly set
   # to the minimal dependency of the package
   # Append automatically discovered dependencies .
-  if(NOT "${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS}" STREQUAL "")
-    if(CPACK_DEBIAN_PACKAGE_DEPENDS)
-      set (CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS}, ${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS}")
-    else()
-      set (CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS}")
-    endif()
+  if(CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS)
+    list(APPEND CPACK_DEBIAN_PACKAGE_DEPENDS ${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS})
+    list(JOIN CPACK_DEBIAN_PACKAGE_DEPENDS ", " CPACK_DEBIAN_PACKAGE_DEPENDS)
   endif()
 
   if(NOT CPACK_DEBIAN_PACKAGE_DEPENDS)
@@ -519,7 +510,7 @@ function(cpack_deb_prepare_package_vars)
   # Are we packaging components ?
   if(CPACK_DEB_PACKAGE_COMPONENT)
     # override values with per component version if set
-    foreach(VAR_NAME_ "PACKAGE_CONTROL_EXTRA" "PACKAGE_CONTROL_STRICT_PERMISSION")
+    foreach(VAR_NAME_ IN ITEMS PACKAGE_CONTROL_EXTRA PACKAGE_CONTROL_STRICT_PERMISSION)
       if(CPACK_DEBIAN_${_local_component_name}_${VAR_NAME_})
         set(CPACK_DEBIAN_${VAR_NAME_} "${CPACK_DEBIAN_${_local_component_name}_${VAR_NAME_}}")
       endif()
@@ -527,12 +518,12 @@ function(cpack_deb_prepare_package_vars)
     get_component_package_name(CPACK_DEBIAN_PACKAGE_NAME ${_local_component_name})
   endif()
 
-  set(CPACK_DEBIAN_PACKAGE_SHLIBS_LIST "")
-
   if(NOT CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS_POLICY)
     set(CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS_POLICY "=")
   endif()
 
+  unset(CPACK_DEBIAN_PACKAGE_SHLIBS_LIST)
+
   if(CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS)
     if(READELF_EXECUTABLE)
       foreach(_FILE IN LISTS CPACK_DEB_SHARED_OBJECT_FILES)
@@ -544,9 +535,7 @@ function(cpack_deb_prepare_package_vars)
           message(AUTHOR_WARNING "Shared library '${_FILE}' is missing soname or soversion. Library will not be added to DEBIAN/shlibs control file.")
         endif()
       endforeach()
-      if(CPACK_DEBIAN_PACKAGE_SHLIBS_LIST)
-        string(REPLACE ";" "\n" CPACK_DEBIAN_PACKAGE_SHLIBS_LIST "${CPACK_DEBIAN_PACKAGE_SHLIBS_LIST}")
-      endif()
+      list(JOIN CPACK_DEBIAN_PACKAGE_SHLIBS_LIST "\n" CPACK_DEBIAN_PACKAGE_SHLIBS_LIST)
     else()
       message(FATAL_ERROR "Readelf utility is not available. CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS option is not available.")
     endif()
@@ -554,7 +543,7 @@ function(cpack_deb_prepare_package_vars)
 
   # add ldconfig call in default postrm and postint
   set(CPACK_ADD_LDCONFIG_CALL 0)
-  foreach(_FILE ${CPACK_DEB_SHARED_OBJECT_FILES})
+  foreach(_FILE IN LISTS CPACK_DEB_SHARED_OBJECT_FILES)
     get_filename_component(_DIR ${_FILE} DIRECTORY)
     # all files in CPACK_DEB_SHARED_OBJECT_FILES have dot at the beginning
     if(_DIR STREQUAL "./lib" OR _DIR STREQUAL "./usr/lib")
@@ -565,12 +554,12 @@ function(cpack_deb_prepare_package_vars)
   if(CPACK_ADD_LDCONFIG_CALL)
     set(CPACK_DEBIAN_GENERATE_POSTINST 1)
     set(CPACK_DEBIAN_GENERATE_POSTRM 1)
-    foreach(f ${PACKAGE_CONTROL_EXTRA})
+    foreach(f IN LISTS PACKAGE_CONTROL_EXTRA)
       get_filename_component(n "${f}" NAME)
-      if("${n}" STREQUAL "postinst")
+      if(n STREQUAL "postinst")
         set(CPACK_DEBIAN_GENERATE_POSTINST 0)
       endif()
-      if("${n}" STREQUAL "postrm")
+      if(n STREQUAL "postrm")
         set(CPACK_DEBIAN_GENERATE_POSTRM 0)
       endif()
     endforeach()
@@ -671,7 +660,7 @@ function(cpack_deb_prepare_package_vars)
   if(BUILD_IDS)
     set(GEN_DBGSYMDIR "${DBGSYMDIR}" PARENT_SCOPE)
     set(GEN_CPACK_DBGSYM_OUTPUT_FILE_NAME "${CPACK_DBGSYM_OUTPUT_FILE_NAME}" PARENT_SCOPE)
-    string(REPLACE ";" " " BUILD_IDS "${BUILD_IDS}")
+    list(JOIN BUILD_IDS " " BUILD_IDS)
     set(GEN_BUILD_IDS "${BUILD_IDS}" PARENT_SCOPE)
   endif()
 endfunction()