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program demo17
!! @(#) using the unnamed parameters as filenames
!! For example, this should list the files in the current directory
!!
!! demo17 *
!!
!! Also demonstrates setting --help and --version text.
!!
!! demo17 --help
!! demo17 --version
!! demo17 --usage
!!
use M_CLI2, only : get_args
use M_CLI2, only : sget, lget, iget, rget, dget, cget
use M_CLI2, only : sgets, lgets, igets, rgets, dgets, cgets
use M_CLI2, only : filenames=>unnamed
implicit none
type(character(len=*)),parameter :: all='(*(g0))'
type(integer) :: indx
!! argument values to set
type(integer) :: i,j,k
type(real) :: x,y,z
type(character(len=:)),allocatable :: title
type(logical) :: l,m,n
type(character(len=:)),allocatable :: fnames(:)
print all,'demo17: using the unnamed parameters as filenames'
print all,'example: demo17 -x 100 * '
call parse() !! Define and parse command line
!! Get argument values
call get_args('x',x,'y',y,'z',z)
call get_args('i',i,'j',j,'k',k)
call get_args('l',l,'m',m,'n',n)
title=sget('title')
!! All done cracking the command line use the values in your program.
print all,'x=',x ,' y=',y ,' z=',z
print all,'i=',i ,' j=',j ,' k=',k
print all,'l=',l ,' m=',m ,' n=',n
print all,'title=',title
!! The optional unnamed values on the command line are
!! accumulated in the character array "UNNAMED" which was
!! renamed to "FILENAMES" on the use statement
if(allocated(filenames))then
if(size(filenames) > 0)then
print all,'files:'
print '(i6.6,1x,3a)',(indx,'[',filenames(indx),']',indx=1,size(filenames))
endif
endif
! alternate method, additionally can be used when desired result is numeric
! by using igets(3f), rgets(3f), ... instead of sgets(3f).
fnames=sgets() ! also gets all the unnamed arguments
if(size(fnames) > 0)then
print all,'files:'
print '(i6.6,1x,3a)',(indx,'[',fnames(indx),']',indx=1,size(fnames))
endif
contains
subroutine parse()
!! Put everything to do with command parsing here
!!
use M_CLI2, only : set_args, set_mode
call set_mode([character(len=20) :: 'strict','ignorecase'])
! a single call to set_args can define the options and their defaults, set help
! text and version information, and crack command line.
call set_args(&
!! DEFINE COMMAND OPTIONS AND DEFAULT VALUES
' &
-i 1 -j 2 -k 3 &
-l F -m F -n F &
-x 1 -y 2 -z 3 &
--title "my title" &
!! ## HELP TEXT ##
', [character(len=80) :: &
!12345678901234567890123456789012345678901234567890123456789012345678901234567890
'NAME ', &
' myprogram(1) - make all things possible ', &
'SYNOPSIS ', &
' myprogram [-i NNN] [-j NNN] [-k NNN] [-l] [-m] [-n] ] ', &
' [-x NNN.mm] [-y NNN.mm] [-z NNN.mm] [FILENAMES] ', &
'DESCRIPTION ', &
' myprogram(1) makes all things possible given stuff. ', &
'OPTIONS ', &
' -i,-j,-k some integer values ', &
' -l,-m,-n some logical values ', &
' -x,-y,-z some real values ', &
' --title a string argument ', &
' FILENAMES any additional strings ', &
'EXAMPLE ', &
' Typical usage: ', &
' ', &
' demo17 *.* ', &
' ', &
' ', &
!! ## VERSION TEXT (with optional @(#) prefix for what(1) command) ##
'' ], [character(len=80) :: &
'@(#)PROGRAM: demo17 >', &
'@(#)DESCRIPTION: My demo program >', &
'@(#)VERSION: 1.0 20200115 >', &
'@(#)AUTHOR: me, myself, and I>', &
'@(#)LICENSE: Public Domain >', &
'' ])
end subroutine parse
end program demo17
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