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program inquiries
implicit none
! Test Fortran-77-ish subset of INQUIRE capabilities
integer :: unit, unit_no
logical :: exists, opened, named
character(32) :: name, access, seq, direct, blank
character(32) :: form, formatted, unformatted
integer :: recl, nextrec
integer :: i
character(*), parameter :: testfn = 'inqtest.dat'
character(*), parameter :: uninitc = '(uninit)'
print *, unit
! Sequential formatted by filename
print *, 'sequential formatted by filename'
open (newunit=unit, file=testfn, form='formatted', status='unknown')
write (unit, '(i4)') 42
rewind (unit)
call init_test ()
inquire (file=testfn, exist=exists, opened=opened, number=unit_no, &
named=named, name=name, access=access, sequential=seq, direct=direct, &
form=form, formatted=formatted, unformatted=unformatted, blank=blank)
print *, 'exist = ', exists, ' :', pf (exists)
print *, 'opened = ', opened, ' :', pf (opened)
print *, 'number = ', unit_no, ' :', pf (unit == unit_no)
print *, 'named = ', named, ' :', pf (named)
print *, 'name = ', trim (name), ' :', pf (name == testfn)
print *, 'access = ', trim (access), ' :', pf (access == 'SEQUENTIAL')
print *, 'sequential = ', trim (seq), ' :', pf (seq == 'YES')
print *, 'direct = ', trim (direct), ' :', pf (direct == 'NO')
print *, 'form = ', trim (form), ' :', pf (form == 'FORMATTED')
print *, 'formatted = ', trim (formatted), ' :', pf (formatted == 'YES')
print *, 'unformatted =', trim (unformatted), ' :', pf (unformatted == 'NO')
print *, 'blank = ', trim (blank), ' :', pf (blank == 'NULL')
close (unit, status='keep')
! Sequential formatted by unitno
print *; print *, 'sequential formatted by unitno'
open (newunit=unit, file=testfn, form='formatted', status='old', blank='zero')
write (unit, '(i4)') 42
rewind (unit)
call init_test ()
inquire (unit=unit, exist=exists, opened=opened, number=unit_no, &
named=named, name=name, access=access, sequential=seq, direct=direct, &
form=form, formatted=formatted, unformatted=unformatted, blank=blank)
print *, 'exist = ', exists, ' :', pf (exists)
print *, 'opened = ', opened, ' :', pf (opened)
print *, 'number = ', unit_no, ' :', pf (unit == unit_no)
print *, 'named = ', named, ' :', pf (named)
print *, 'name = ', trim (name), ' :', pf (name == testfn)
print *, 'access = ', trim (access), ' :', pf (access == 'SEQUENTIAL')
print *, 'sequential = ', trim (seq), ' :', pf (seq == 'YES')
print *, 'direct = ', trim (direct), ' :', pf (direct == 'NO')
print *, 'form = ', trim (form), ' :', pf (form == 'FORMATTED')
print *, 'formatted = ', trim (formatted), ' :', pf (formatted == 'YES')
print *, 'unformatted =', trim (unformatted), ' :', pf (unformatted == 'NO')
print *, 'blank = ', trim (blank), ' :', pf (blank == 'ZERO')
close (unit, status='delete')
! Sequential unformatted by filename
print *; print *, 'sequential formatted by filename'
open (newunit=unit, file=testfn, form='unformatted', status='new')
write (unit) 42
rewind (unit)
call init_test ()
inquire (file=testfn, exist=exists, opened=opened, number=unit_no, &
named=named, name=name, access=access, sequential=seq, direct=direct, &
form=form, formatted=formatted, unformatted=unformatted, blank=blank)
print *, 'exist = ', exists, ' :', pf (exists)
print *, 'opened = ', opened, ' :', pf (opened)
print *, 'number = ', unit_no, ' :', pf (unit == unit_no)
print *, 'named = ', named, ' :', pf (named)
print *, 'name = ', trim (name), ' :', pf (name == testfn)
print *, 'access = ', trim (access), ' :', pf (access == 'SEQUENTIAL')
print *, 'sequential = ', trim (seq), ' :', pf (seq == 'YES')
print *, 'direct = ', trim (direct), ' :', pf (direct == 'NO')
print *, 'form = ', trim (form), ' :', pf (form == 'UNFORMATTED')
print *, 'formatted = ', trim (formatted), ' :', pf (formatted == 'NO')
print *, 'unformatted =', trim (unformatted), ' :', pf (unformatted == 'YES')
print *, 'blank = ', trim (blank), ' :', pf (blank == 'UNDEFINED')
close (unit, status='keep')
! Sequential unformatted by unitno
print *; print *, 'sequential formatted by unitno'
open (newunit=unit, file=testfn, form='unformatted', status='old')
write (unit) 42
rewind (unit)
call init_test ()
inquire (unit=unit, exist=exists, opened=opened, number=unit_no, &
named=named, name=name, access=access, sequential=seq, direct=direct, &
form=form, formatted=formatted, unformatted=unformatted, blank=blank)
print *, 'exist = ', exists, ' :', pf (exists)
print *, 'opened = ', opened, ' :', pf (opened)
print *, 'number = ', unit_no, ' :', pf (unit == unit_no)
print *, 'named = ', named, ' :', pf (named)
print *, 'name = ', trim (name), ' :', pf (name == testfn)
print *, 'access = ', trim (access), ' :', pf (access == 'SEQUENTIAL')
print *, 'sequential = ', trim (seq), ' :', pf (seq == 'YES')
print *, 'direct = ', trim (direct), ' :', pf (direct == 'NO')
print *, 'form = ', trim (form), ' :', pf (form == 'UNFORMATTED')
print *, 'formatted = ', trim (formatted), ' :', pf (formatted == 'NO')
print *, 'unformatted =', trim (unformatted), ' :', pf (unformatted == 'YES')
print *, 'blank = ', trim (blank), ' :', pf (blank == 'UNDEFINED')
close (unit, status='delete')
! Record length inquiry
inquire (iolength=recl) 42, 42.0, 'xyzzy'
print *; print *, 'record length =', recl
! Direct unformatted by filename
print *; print *, 'direct formatted by filename'
open (newunit=unit, file=testfn, access='direct', recl=recl, form='unformatted', status='new')
do, i=1, 5
write (unit, rec=i) 42+i, 42.0+i, 'xyzzy'
end do
call init_test ()
inquire (file=testfn, exist=exists, opened=opened, number=unit_no, &
named=named, name=name, access=access, sequential=seq, direct=direct, &
form=form, formatted=formatted, unformatted=unformatted, &
recl=recl, nextrec=nextrec)
print *, 'exist = ', exists, ' :', pf (exists)
print *, 'opened = ', opened, ' :', pf (opened)
print *, 'number = ', unit_no, ' :', pf (unit == unit_no)
print *, 'named = ', named, ' :', pf (named)
print *, 'name = ', trim (name), ' :', pf (name == testfn)
print *, 'access = ', trim (access), ' :', pf (access == 'DIRECT')
print *, 'sequential = ', trim (seq), ' :', pf (seq == 'NO')
print *, 'direct = ', trim (direct), ' :', pf (direct == 'YES')
print *, 'form = ', trim (form), ' :', pf (form == 'UNFORMATTED')
print *, 'formatted = ', trim (formatted), ' :', pf (formatted == 'NO')
print *, 'unformatted =', trim (unformatted), ' :', pf (unformatted == 'YES')
print *, 'recl = ', recl, ' :', pf (recl == 13)
! print *, 'nextrec = ', nextrec, ' :', pf (nextrec == 6)
close (unit, status='keep')
! Direct unformatted by unitno
print *; print *, 'direct formatted by unitno'
open (newunit=unit, file=testfn, access='direct', recl=recl, form='unformatted', status='old')
do, i=1, 5
write (unit, rec=i) 42+i, 42.0+i, 'xyzzy'
end do
call init_test ()
inquire (unit=unit, exist=exists, opened=opened, number=unit_no, &
named=named, name=name, access=access, sequential=seq, direct=direct, &
form=form, formatted=formatted, unformatted=unformatted, &
recl=recl, nextrec=nextrec)
print *, 'exist = ', exists, ' :', pf (exists)
print *, 'opened = ', opened, ' :', pf (opened)
print *, 'number = ', unit_no, ' :', pf (unit == unit_no)
print *, 'named = ', named, ' :', pf (named)
print *, 'name = ', trim (name), ' :', pf (name == testfn)
print *, 'access = ', trim (access), ' :', pf (access == 'DIRECT')
print *, 'sequential = ', trim (seq), ' :', pf (seq == 'NO')
print *, 'direct = ', trim (direct), ' :', pf (direct == 'YES')
print *, 'form = ', trim (form), ' :', pf (form == 'UNFORMATTED')
print *, 'formatted = ', trim (formatted), ' :', pf (formatted == 'NO')
print *, 'unformatted =', trim (unformatted), ' :', pf (unformatted == 'YES')
print *, 'recl = ', recl, ' :', pf (recl == 13)
! print *, 'nextrec = ', nextrec, ' :', pf (nextrec == 6)
close (unit, status='delete')
contains
subroutine init_test ()
exists = .false.; opened = .false.; unit_no = -99999
named = .false.; name = uninitc
access = uninitc; seq = uninitc; direct = uninitc
form = uninitc; formatted = uninitc; unformatted = uninitc
blank = uninitc
recl = -99999; nextrec = -99999
end subroutine
function pf (l)
logical, intent(in) :: l
character(4) :: pf
pf = merge ('pass', 'FAIL', l)
if (.not. l) error stop
end function
end program
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