[6] | 1 | module m_wxml_dictionary |
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| 2 | |
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| 3 | private |
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| 4 | ! |
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| 5 | ! A very rough implementation for now |
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| 6 | ! It uses fixed-length buffers for key/value pairs, |
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| 7 | ! and the maximum number of dictionary items is hardwired. |
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| 8 | |
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| 9 | integer, parameter, private :: MAX_ITEMS = 30 |
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| 10 | type, public :: wxml_dictionary_t |
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| 11 | private |
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| 12 | integer :: number_of_items ! = 0 |
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| 13 | character(len=100), dimension(MAX_ITEMS) :: key |
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| 14 | character(len=100), dimension(MAX_ITEMS) :: value |
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| 15 | end type wxml_dictionary_t |
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| 16 | |
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| 17 | ! |
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| 18 | ! Building procedures |
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| 19 | ! |
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| 20 | public :: add_key_to_dict, add_value_to_dict, reset_dict |
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| 21 | |
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| 22 | ! |
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| 23 | ! Query and extraction procedures |
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| 24 | ! |
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| 25 | public :: len |
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| 26 | interface len |
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| 27 | module procedure number_of_entries |
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| 28 | end interface |
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| 29 | public :: number_of_entries |
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| 30 | public :: get_key |
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| 31 | public :: get_value |
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| 32 | public :: has_key |
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| 33 | public :: print_dict |
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| 34 | ! |
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| 35 | interface get_value |
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| 36 | module procedure wxml_get_value |
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| 37 | end interface |
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| 38 | |
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| 39 | CONTAINS |
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| 40 | |
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| 41 | !------------------------------------------------------ |
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| 42 | function number_of_entries(dict) result(n) |
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| 43 | type(wxml_dictionary_t), intent(in) :: dict |
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| 44 | integer :: n |
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| 45 | |
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| 46 | n = dict%number_of_items |
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| 47 | |
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| 48 | end function number_of_entries |
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| 49 | |
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| 50 | !------------------------------------------------------ |
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| 51 | function has_key(dict,key) result(found) |
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| 52 | type(wxml_dictionary_t), intent(in) :: dict |
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| 53 | character(len=*), intent(in) :: key |
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| 54 | logical :: found |
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| 55 | |
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| 56 | integer :: n, i |
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| 57 | found = .false. |
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| 58 | n = dict%number_of_items |
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| 59 | do i = 1, n |
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| 60 | if (dict%key(i) == key) then |
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| 61 | found = .true. |
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| 62 | exit |
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| 63 | endif |
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| 64 | enddo |
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| 65 | end function has_key |
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| 66 | |
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| 67 | !------------------------------------------------------ |
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| 68 | subroutine wxml_get_value(dict,key,value,status) |
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| 69 | type(wxml_dictionary_t), intent(in) :: dict |
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| 70 | character(len=*), intent(in) :: key |
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| 71 | character(len=*), intent(out) :: value |
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| 72 | integer, intent(out) :: status |
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| 73 | ! |
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| 74 | integer :: n, i |
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| 75 | |
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| 76 | status = -1 |
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| 77 | n = dict%number_of_items |
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| 78 | do i = 1, n |
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| 79 | if (dict%key(i) == key) then |
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| 80 | value = dict%value(i) |
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| 81 | status = 0 |
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| 82 | RETURN |
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| 83 | endif |
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| 84 | enddo |
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| 85 | |
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| 86 | end subroutine wxml_get_value |
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| 87 | |
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| 88 | !------------------------------------------------------ |
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| 89 | subroutine get_key(dict,i,key,status) |
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| 90 | ! |
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| 91 | ! Get the i'th key |
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| 92 | ! |
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| 93 | type(wxml_dictionary_t), intent(in) :: dict |
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| 94 | integer, intent(in) :: i |
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| 95 | character(len=*), intent(out) :: key |
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| 96 | integer, intent(out) :: status |
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| 97 | |
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| 98 | if (i <= dict%number_of_items) then |
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| 99 | key = dict%key(i) |
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| 100 | status = 0 |
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| 101 | else |
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| 102 | key = "" |
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| 103 | status = -1 |
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| 104 | endif |
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| 105 | |
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| 106 | end subroutine get_key |
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| 107 | |
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| 108 | !------------------------------------------------------ |
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| 109 | subroutine add_key_to_dict(key,dict) |
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| 110 | character(len=*), intent(in) :: key |
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| 111 | type(wxml_dictionary_t), intent(inout) :: dict |
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| 112 | |
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| 113 | integer :: n |
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| 114 | |
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| 115 | n = dict%number_of_items |
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| 116 | if (n == MAX_ITEMS) then |
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| 117 | write(unit=0,fmt=*) "Dictionary capacity exceeded !" |
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| 118 | RETURN |
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| 119 | endif |
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| 120 | |
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| 121 | n = n + 1 |
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| 122 | dict%key(n) = key |
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| 123 | dict%number_of_items = n |
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| 124 | |
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| 125 | end subroutine add_key_to_dict |
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| 126 | |
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| 127 | !------------------------------------------------------ |
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| 128 | ! Assumes we build the dictionary in an orderly fashion, |
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| 129 | ! so one adds first the key and then immediately afterwards the value. |
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| 130 | ! |
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| 131 | subroutine add_value_to_dict(value,dict) |
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| 132 | character(len=*), intent(in) :: value |
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| 133 | type(wxml_dictionary_t), intent(inout) :: dict |
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| 134 | |
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| 135 | integer :: n |
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| 136 | |
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| 137 | n = dict%number_of_items |
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| 138 | dict%value(n) = value |
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| 139 | |
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| 140 | end subroutine add_value_to_dict |
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| 141 | |
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| 142 | !------------------------------------------------------ |
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| 143 | subroutine reset_dict(dict) |
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| 144 | type(wxml_dictionary_t), intent(inout) :: dict |
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| 145 | |
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| 146 | dict%number_of_items = 0 |
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| 147 | |
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| 148 | end subroutine reset_dict |
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| 149 | |
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| 150 | !------------------------------------------------------ |
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| 151 | subroutine print_dict(dict) |
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| 152 | type(wxml_dictionary_t), intent(in) :: dict |
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| 153 | |
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| 154 | integer :: i |
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| 155 | |
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| 156 | do i = 1, dict%number_of_items |
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| 157 | print *, trim(dict%key(i)), " = ", trim(dict%value(i)) |
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| 158 | enddo |
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| 159 | |
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| 160 | end subroutine print_dict |
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| 161 | |
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| 162 | end module m_wxml_dictionary |
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