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| 1 | +!***************************************************************************************** |
| 2 | +!> |
| 3 | +! Module for the 23rd unit test. |
| 4 | + |
| 5 | +module jf_test_23_mod |
| 6 | + |
| 7 | + use json_module |
| 8 | + use, intrinsic :: iso_fortran_env , only: error_unit, output_unit, wp => real64 |
| 9 | + |
| 10 | + implicit none |
| 11 | + |
| 12 | + character(len=*),parameter :: dir = '../files/inputs/' !! working directory |
| 13 | + character(len=*),parameter :: filename1 = 'test1.json' !! file to read |
| 14 | + |
| 15 | +contains |
| 16 | + |
| 17 | + subroutine test_23(error_cnt) |
| 18 | + |
| 19 | + !! Read a sample JSON file and retrieve some data from it |
| 20 | + !! using RFC 6901 paths. |
| 21 | + |
| 22 | + implicit none |
| 23 | + |
| 24 | + type(json_file) :: json !! the JSON structure read from the file |
| 25 | + type(json_value),pointer :: p |
| 26 | + type(json_core) :: core |
| 27 | + integer,intent(out) :: error_cnt |
| 28 | + character(kind=json_CK,len=:),allocatable :: cval |
| 29 | + character(kind=json_CK,len=:),allocatable :: key |
| 30 | + character(kind=json_CK,len=:),allocatable :: path |
| 31 | + integer :: ival |
| 32 | + real(wp) :: rval |
| 33 | + logical :: found |
| 34 | + |
| 35 | + error_cnt = 0 |
| 36 | + call json%initialize( trailing_spaces_significant=.true.,& |
| 37 | + case_sensitive_keys=.true.,& |
| 38 | + use_rfc6901_paths=.true.) |
| 39 | + if (json%failed()) then |
| 40 | + call json%print_error_message(error_unit) |
| 41 | + error_cnt = error_cnt + 1 |
| 42 | + end if |
| 43 | + |
| 44 | + write(error_unit,'(A)') '' |
| 45 | + write(error_unit,'(A)') '=================================' |
| 46 | + write(error_unit,'(A)') ' TEST 23' |
| 47 | + write(error_unit,'(A)') '=================================' |
| 48 | + write(error_unit,'(A)') '' |
| 49 | + |
| 50 | + ! parse the json file: |
| 51 | + write(error_unit,'(A)') '' |
| 52 | + write(error_unit,'(A)') 'parsing file '//dir//filename1 |
| 53 | + |
| 54 | + call json%load_file(filename = dir//filename1) |
| 55 | + |
| 56 | + if (json%failed()) then !if there was an error reading the file |
| 57 | + |
| 58 | + call json%print_error_message(error_unit) |
| 59 | + error_cnt = error_cnt + 1 |
| 60 | + |
| 61 | + else |
| 62 | + |
| 63 | + ! print the parsed data to the console |
| 64 | + write(error_unit,'(A)') '' |
| 65 | + write(error_unit,'(A)') 'printing the file...' |
| 66 | + call json%print_file() |
| 67 | + if (json%failed()) then |
| 68 | + call json%print_error_message(error_unit) |
| 69 | + error_cnt = error_cnt + 1 |
| 70 | + end if |
| 71 | + |
| 72 | + ! extract data from the parsed value |
| 73 | + write(error_unit,'(A)') '' |
| 74 | + write(error_unit,'(A)') 'get some data from the file...' |
| 75 | + |
| 76 | + write(error_unit,'(A)') '' |
| 77 | + key = '/version/svn' |
| 78 | + call json%get(key, ival) |
| 79 | + if (json%failed()) then |
| 80 | + call json%print_error_message(error_unit) |
| 81 | + error_cnt = error_cnt + 1 |
| 82 | + else |
| 83 | + write(error_unit,'(A,I5)') key//' = ',ival |
| 84 | + end if |
| 85 | + |
| 86 | + write(error_unit,'(A)') '' |
| 87 | + key = '/data/0/array/1' |
| 88 | + call json%get(key, cval) |
| 89 | + if (json%failed()) then |
| 90 | + call json%print_error_message(error_unit) |
| 91 | + error_cnt = error_cnt + 1 |
| 92 | + else |
| 93 | + write(error_unit,'(A)') key//' = '//trim(cval) |
| 94 | + end if |
| 95 | + |
| 96 | + write(error_unit,'(A)') '' |
| 97 | + key = '/files/0' |
| 98 | + call json%get(key, cval) |
| 99 | + if (json%failed()) then |
| 100 | + call json%print_error_message(error_unit) |
| 101 | + error_cnt = error_cnt + 1 |
| 102 | + else |
| 103 | + write(error_unit,'(A)') key//' = '//trim(cval) |
| 104 | + end if |
| 105 | + |
| 106 | + write(error_unit,'(A)') '' |
| 107 | + key = '/files/1' |
| 108 | + call json%get(key, cval) |
| 109 | + if (json%failed()) then |
| 110 | + call json%print_error_message(error_unit) |
| 111 | + error_cnt = error_cnt + 1 |
| 112 | + else |
| 113 | + write(error_unit,'(A)') key//' = '//trim(cval) |
| 114 | + end if |
| 115 | + |
| 116 | + write(error_unit,'(A)') '' |
| 117 | + key = '/files/2' |
| 118 | + call json%get(key, cval) |
| 119 | + if (json%failed()) then |
| 120 | + call json%print_error_message(error_unit) |
| 121 | + error_cnt = error_cnt + 1 |
| 122 | + else |
| 123 | + write(error_unit,'(A)') key//' = '//trim(cval) |
| 124 | + end if |
| 125 | + |
| 126 | + write(error_unit,'(A)') '' |
| 127 | + key = '/data/1/real' |
| 128 | + call json%get(key, rval) |
| 129 | + if (json%failed()) then |
| 130 | + call json%print_error_message(error_unit) |
| 131 | + error_cnt = error_cnt + 1 |
| 132 | + else |
| 133 | + write(error_unit,'(A,E30.16)') key//' = ',rval |
| 134 | + end if |
| 135 | + |
| 136 | + write(error_unit,'(A)') '' |
| 137 | + key = '/files/3' |
| 138 | + call json%get(key, cval) !has hex characters |
| 139 | + if (json%failed()) then |
| 140 | + call json%print_error_message(error_unit) |
| 141 | + error_cnt = error_cnt + 1 |
| 142 | + else |
| 143 | + write(error_unit,'(A)') key//' = '//trim(cval) |
| 144 | + end if |
| 145 | + |
| 146 | + write(error_unit,'(A)') '' |
| 147 | + key = '/files/4' |
| 148 | + call json%get(key, cval) !string with spaces and no escape characters |
| 149 | + if (json%failed()) then |
| 150 | + call json%print_error_message(error_unit) |
| 151 | + error_cnt = error_cnt + 1 |
| 152 | + else |
| 153 | + write(error_unit,'(A)') key//' = '//trim(cval) |
| 154 | + end if |
| 155 | + |
| 156 | + ! |
| 157 | + ! Test of values that aren't there: |
| 158 | + ! Note: when using the "found" output, the exceptions are cleared automatically. |
| 159 | + ! |
| 160 | + |
| 161 | + write(error_unit,'(A)') '' |
| 162 | + key = '/files/9' |
| 163 | + call json%get(key, cval, found) !value that isn't there |
| 164 | + if (.not. found) then |
| 165 | + write(error_unit,'(A)') key//' not in file.' |
| 166 | + else |
| 167 | + write(error_unit,'(1x,A)') key//' = '//trim(cval) |
| 168 | + error_cnt = error_cnt + 1 |
| 169 | + end if |
| 170 | + |
| 171 | + write(error_unit,'(A)') '' |
| 172 | + key = '/version/blah' |
| 173 | + call json%get(key, ival, found) !value that isn't there |
| 174 | + if (.not. found) then |
| 175 | + write(error_unit,'(A)') key//' not in file.' |
| 176 | + else |
| 177 | + write(error_unit,'(A)') key//' = ',ival |
| 178 | + error_cnt = error_cnt + 1 |
| 179 | + end if |
| 180 | + |
| 181 | + end if |
| 182 | + |
| 183 | + ! get the path to one of the variables: |
| 184 | + |
| 185 | + call core%initialize( trailing_spaces_significant=.true.,& |
| 186 | + case_sensitive_keys=.true.,& |
| 187 | + use_rfc6901_paths=.true.) |
| 188 | + |
| 189 | + write(error_unit,'(A)') '' |
| 190 | + key = '/data/1/real' |
| 191 | + call json%get(key,p) |
| 192 | + call core%get_path(p, path, found) |
| 193 | + if (found) then |
| 194 | + if (key==path) then |
| 195 | + write(error_unit,'(A)') 'get_path test passed: '//path |
| 196 | + else |
| 197 | + write(error_unit,'(A)') 'Error: path does not match: '//path//' '//key |
| 198 | + error_cnt = error_cnt + 1 |
| 199 | + end if |
| 200 | + else |
| 201 | + write(error_unit,'(A)') 'Error: could not find '//key |
| 202 | + error_cnt = error_cnt + 1 |
| 203 | + end if |
| 204 | + |
| 205 | + ! clean up |
| 206 | + write(error_unit,'(A)') '' |
| 207 | + write(error_unit,'(A)') 'destroy...' |
| 208 | + call json%destroy() |
| 209 | + if (json%failed()) then |
| 210 | + call json%print_error_message(error_unit) |
| 211 | + error_cnt = error_cnt + 1 |
| 212 | + end if |
| 213 | + |
| 214 | + end subroutine test_23 |
| 215 | + |
| 216 | +end module jf_test_23_mod |
| 217 | +!***************************************************************************************** |
| 218 | + |
| 219 | +!***************************************************************************************** |
| 220 | +program jf_test_23 |
| 221 | + |
| 222 | + !! 23rd unit test. |
| 223 | + |
| 224 | + use jf_test_23_mod , only: test_23 |
| 225 | + implicit none |
| 226 | + integer :: n_errors |
| 227 | + n_errors = 0 |
| 228 | + call test_23(n_errors) |
| 229 | + if (n_errors /= 0) stop 1 |
| 230 | + |
| 231 | +end program jf_test_23 |
| 232 | +!***************************************************************************************** |
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