Common C++ classes and routines used by my applications such as argument parser, IO and conversion utilities
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cmake_minimum_required(VERSION 3.3.0 FATAL_ERROR)
# prevent multiple inclusion
if (DEFINED LIST_TO_STRING_LOADED)
return()
endif ()
set(LIST_TO_STRING_LOADED ON)
function (list_to_string separator prefix suffix input_list output_string_var)
set(res "")
# get list length
list(LENGTH input_list list_length)
# if the list has 0 or 1 element, there is no need to loop over
if (list_length LESS 2)
set(res "${prefix}${input_list}${suffix}")
else ()
math(EXPR last_element_index "${list_length} - 1")
foreach (index RANGE ${last_element_index})
# get current item_value
list(GET input_list ${index} item_value)
if (NOT item_value STREQUAL "")
# .. and append non-empty value to output string
set(res "${res}${prefix}${item_value}${suffix}")
# append separator if current element is NOT the last one.
if (NOT index EQUAL last_element_index)
set(res "${res}${separator}")
endif ()
endif ()
endforeach ()
endif ()
set(${output_string_var}
"${res}"
PARENT_SCOPE)
endfunction ()