1 ###########################################################################
5 # Copyright (c) Kitware Inc.
7 # Licensed under the Apache License, Version 2.0 (the "License");
8 # you may not use this file except in compliance with the License.
9 # You may obtain a copy of the License at
11 # http://www.apache.org/licenses/LICENSE-2.0.txt
13 # Unless required by applicable law or agreed to in writing, software
14 # distributed under the License is distributed on an "AS IS" BASIS,
15 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 # See the License for the specific language governing permissions and
17 # limitations under the License.
19 ###########################################################################
21 function(ctk_list_to_string separator input_list output_string_var)
24 cmake_policy(SET CMP0007 OLD)
26 list(LENGTH input_list list_length)
27 # If the list has 0 or 1 element, there is no need to loop over.
28 if(list_length LESS 2)
29 set(_string "${input_list}")
31 math(EXPR last_element_index "${list_length} - 1")
32 foreach(index RANGE ${last_element_index})
33 # Get current item_value
34 list(GET input_list ${index} item_value)
35 # .. and append to output string
36 set(_string "${_string}${item_value}")
37 # Append separator if current element is NOT the last one.
38 if(NOT index EQUAL last_element_index)
39 set(_string "${_string}${separator}")
43 set(${output_string_var} ${_string} PARENT_SCOPE)
49 # cmake -DTEST_ctk_list_to_string_test:BOOL=ON -P ListToString.cmake
51 function(ctk_list_to_string_test)
53 function(ctk_list_to_string_test_check id current_output expected_output)
54 if(NOT "${current_output}" STREQUAL "${expected_output}")
55 message(FATAL_ERROR "Problem with ctk_list_to_string() - See testcase: ${id}\n"
56 "current_output:${current_output}\n"
57 "expected_output:${expected_output}")
62 set(case${id}_input "")
63 set(case${id}_expected_output "")
64 ctk_list_to_string("^^" "${case${id}_input}" case${id}_current_output)
65 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
68 set(case${id}_input item1)
69 set(case${id}_expected_output "item1")
70 ctk_list_to_string("^^" "${case${id}_input}" case${id}_current_output)
71 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
74 set(case${id}_input item1 item2)
75 set(case${id}_expected_output "item1^^item2")
76 ctk_list_to_string("^^" "${case${id}_input}" case${id}_current_output)
77 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
80 set(case${id}_input item1 item2 item3)
81 set(case${id}_expected_output "item1^^item2^^item3")
82 ctk_list_to_string("^^" "${case${id}_input}" case${id}_current_output)
83 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
86 set(case${id}_input item1 item2 item3 item4)
87 set(case${id}_expected_output "item1^^item2^^item3^^item4")
88 ctk_list_to_string("^^" "${case${id}_input}" case${id}_current_output)
89 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
92 set(case${id}_input item1 "" item3 item4)
93 set(case${id}_expected_output "item1^^item3^^item4")
94 ctk_list_to_string("^^" "${case${id}_input}" case${id}_current_output)
95 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
98 set(case${id}_input item1 ^^item2 item3 item4)
99 set(case${id}_expected_output "item1^^^^item2^^item3^^item4")
100 ctk_list_to_string("^^" "${case${id}_input}" case${id}_current_output)
101 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
104 set(case${id}_input item1 item2 item3 item4)
105 set(case${id}_expected_output "item1item2item3item4")
106 ctk_list_to_string("" "${case${id}_input}" case${id}_current_output)
107 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
110 set(case${id}_input item1 item2 item3 item4)
111 set(case${id}_expected_output "item1 item2 item3 item4")
112 ctk_list_to_string(" " "${case${id}_input}" case${id}_current_output)
113 ctk_list_to_string_test_check(${id} "${case${id}_current_output}" "${case${id}_expected_output}")
117 if(TEST_ctk_list_to_string_test)
118 ctk_list_to_string_test()