[3837] | 1 | MODULE parse_args_mod |
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| 2 | |
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| 3 | !*********************************************************************** |
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| 4 | ! DESCRIPTION: |
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| 5 | ! Provides a subroutine to parse command-line options. |
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| 6 | ! Recognizes: |
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| 7 | ! --help |
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| 8 | ! --version [file] |
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| 9 | ! --jobid <id> |
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| 10 | ! --add-sso |
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| 11 | !*********************************************************************** |
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| 12 | |
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| 13 | use pgrm_version_mod, only: print_pgrm_version |
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| 14 | use job_timelimit_mod, only: get_job_timelimit |
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| 15 | |
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| 16 | implicit none |
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| 17 | |
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| 18 | logical :: add_sso_fields = .false. ! Default: do not include SSO fields |
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| 19 | |
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| 20 | !======================================================================= |
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| 21 | contains |
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| 22 | !======================================================================= |
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| 23 | |
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| 24 | SUBROUTINE parse_args() |
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| 25 | |
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| 26 | implicit none |
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| 27 | |
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| 28 | !---- Arguments |
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| 29 | |
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| 30 | !---- Variables |
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| 31 | integer :: narg, i, eq_pos |
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| 32 | character(256) :: arg, key, vlu |
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| 33 | |
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| 34 | !---- Code |
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| 35 | narg = command_argument_count() ! Get the number of command-line arguments |
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| 36 | if (narg == 0) return ! No option: normal/default case, nothing to do |
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| 37 | |
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| 38 | i = 1 |
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| 39 | do while (i <= narg) |
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| 40 | call get_command_argument(i,arg) ! Read the argument given to the program |
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| 41 | |
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| 42 | eq_pos = index(arg,'=') |
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| 43 | if (eq_pos > 0) then ! Handle "--keyword=value" style |
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| 44 | key = strip(arg(:eq_pos - 1)) |
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| 45 | vlu = strip(arg(eq_pos + 1:)) |
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| 46 | else ! Handle "--keyword [value]" style |
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| 47 | key = strip(arg) |
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| 48 | vlu = '' |
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| 49 | if (i < narg) then |
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| 50 | call get_command_argument(i + 1,arg) ! Read the argument given to the program |
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| 51 | if (len_trim(adjustl(arg)) > 0 .and. arg(1:2) /= '--') then |
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| 52 | vlu = strip(arg) |
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| 53 | i = i + 1 ! To skip the value argument next time |
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| 54 | endif |
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| 55 | endif |
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| 56 | endif |
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| 57 | |
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| 58 | select case (to_lower(key)) |
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| 59 | case('--help') |
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| 60 | call print_usage() |
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| 61 | call exit(0) |
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| 62 | |
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| 63 | case ('--version') |
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| 64 | if (len_trim(adjustl(vlu)) > 0) then |
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| 65 | call print_pgrm_version(vlu) |
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| 66 | else |
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| 67 | call print_pgrm_version() |
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| 68 | endif |
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| 69 | call exit(0) |
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| 70 | |
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| 71 | case ('--add-sso') |
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| 72 | add_sso_fields = .true. |
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| 73 | write(*,*) 'SSO fields will be included in "start_archive.nc"' |
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| 74 | |
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| 75 | case ('--jobid') |
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| 76 | call get_job_timelimit(vlu) |
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| 77 | |
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| 78 | case default |
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| 79 | write(*,*) 'Error: unknown option "', key, '".' |
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| 80 | call exit(1) |
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| 81 | end select |
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| 82 | |
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| 83 | i = i + 1 |
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| 84 | enddo |
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| 85 | |
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| 86 | END SUBROUTINE parse_args |
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| 87 | !======================================================================= |
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| 88 | |
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| 89 | SUBROUTINE print_usage() |
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| 90 | write(*,*) |
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| 91 | write(*,*) 'Usage: program [options]' |
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| 92 | write(*,*) ' --help Show this help message and exit' |
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| 93 | write(*,*) ' --version [file] Print program version and exit (optional output file)' |
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| 94 | write(*,*) ' --add-sso Add SSO fields to "start_archive.nc" (only available for Mars start2archive)' |
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| 95 | write(*,*) ' --jobid <id> Query the time limit for the specified job ID,' |
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| 96 | write(*,*) ' enabling self-termination before timeout (only available for the PEM)' |
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| 97 | write(*,*) |
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| 98 | END SUBROUTINE print_usage |
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| 99 | !======================================================================= |
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| 100 | |
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| 101 | PURE FUNCTION strip(s) RESULT(t) |
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| 102 | |
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| 103 | implicit none |
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| 104 | |
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| 105 | !---- Arguments |
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| 106 | character(*), intent(in) :: s |
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| 107 | character(len(s)) :: t |
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| 108 | |
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| 109 | !---- Variables |
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| 110 | |
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| 111 | !---- Code |
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| 112 | t = trim(adjustl(s)) |
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| 113 | |
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| 114 | END FUNCTION |
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| 115 | !======================================================================= |
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| 116 | |
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| 117 | PURE FUNCTION to_lower(s) RESULT(low) |
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| 118 | |
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| 119 | implicit none |
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| 120 | |
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| 121 | !---- Arguments |
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| 122 | character(*), intent(in) :: s |
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| 123 | character(len(s)) :: low |
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| 124 | |
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| 125 | !---- Variables |
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| 126 | integer :: i |
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| 127 | |
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| 128 | !---- Code |
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| 129 | low = s |
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| 130 | do i = 1,len(s) |
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| 131 | if (iachar(s(i:i)) >= iachar('A') .and. iachar(s(i:i)) <= iachar('Z')) low(i:i) = achar(iachar(s(i:i)) + 32) |
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| 132 | enddo |
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| 133 | |
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| 134 | END FUNCTION to_lower |
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| 135 | |
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| 136 | |
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| 137 | END MODULE parse_args_mod |
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