write_lines Program

program write_lines
!-----------------------------------------------------------------------------------------------------------------------------------
!< StringiFor `write_lines` test.
!-----------------------------------------------------------------------------------------------------------------------------------
use, intrinsic :: iso_fortran_env, only : stdout => output_unit, iostat_end
use stringifor, only : string, write_lines_standalone => write_lines
!-----------------------------------------------------------------------------------------------------------------------------------

!-----------------------------------------------------------------------------------------------------------------------------------
implicit none
type(string)              :: astring         !< A string.
type(string)              :: anotherstring   !< Another string.
type(string), allocatable :: strings(:)      !< A set of strings.
type(string)              :: line(3)         !< Another set of string.
integer                   :: iostat          !< IO status code.
character(len=99)         :: iomsg           !< IO status message.
integer                   :: scratch         !< Scratch file unit.
integer                   :: l               !< Counter.
logical                   :: test_passed(16) !< List of passed tests.
!-----------------------------------------------------------------------------------------------------------------------------------

!-----------------------------------------------------------------------------------------------------------------------------------
test_passed = .false.

line(1) = ' Hello World!   '
line(2) = 'How are you?  '
line(3) = '   All say: "Fine thanks"'
anotherstring = anotherstring%join(array=line, sep=new_line('a'))

write(stdout, "(A)") "TBP write_lines"
open(newunit=scratch, status='SCRATCH')
call anotherstring%write_lines(unit=scratch, iostat=iostat, iomsg=iomsg)
if (iostat/=0) write(stdout, "(A)")iomsg
call astring%read_lines(unit=scratch, iostat=iostat, iomsg=iomsg)
call astring%split(tokens=strings, sep=new_line('a'))
test_passed(1) = (size(strings, dim=1)==size(line, dim=1))
do l=1, size(strings, dim=1)
  test_passed(l+1) = (strings(l)==line(l))
  write(stdout, "(A,L1)") 'line: "'//strings(l)//'", is correct? ', test_passed(l+1)
enddo
close(scratch)

write(stdout, "(A)") "Standalone write_lines"
open(newunit=scratch, status='SCRATCH')
call write_lines_standalone(unit=scratch, lines=line, iostat=iostat, iomsg=iomsg)
if (iostat/=0) write(stdout, "(A)")iomsg
call astring%read_lines(unit=scratch, iostat=iostat, iomsg=iomsg)
call astring%split(tokens=strings, sep=new_line('a'))
test_passed(5) = (size(strings, dim=1)==size(line, dim=1))
do l=1, size(strings, dim=1)
  test_passed(l+5) = (strings(l)==line(l))
  write(stdout, "(A,L1)") 'line: "'//strings(l)//'", is correct? ', test_passed(l+5)
enddo
close(scratch)

write(stdout, "(A)") "TBP write_lines unformatted"
open(newunit=scratch, status='SCRATCH', form='UNFORMATTED', access='STREAM')
call anotherstring%write_lines(unit=scratch, form='unformatted', iostat=iostat, iomsg=iomsg)
if (iostat/=0) write(stdout, "(A)")iomsg
call astring%read_lines(unit=scratch, form='UNFORMATTED', iostat=iostat, iomsg=iomsg)
call astring%split(tokens=strings, sep=new_line('a'))
test_passed(9) = (size(strings, dim=1)==size(line, dim=1))
do l=1, size(strings, dim=1)
  test_passed(l+9) = (strings(l)==line(l))
  write(stdout, "(A,L1)") 'line: "'//strings(l)//'", is correct? ', test_passed(l+9)
enddo
close(scratch)

write(stdout, "(A)") "Standalone write_lines unformatted"
open(newunit=scratch, status='SCRATCH', form='UNFORMATTED', access='STREAM')
call write_lines_standalone(unit=scratch, lines=line, form='unformatted', iostat=iostat, iomsg=iomsg)
if (iostat/=0) write(stdout, "(A)")iomsg
call astring%read_lines(unit=scratch, form='UNFORMATTED', iostat=iostat, iomsg=iomsg)
call astring%split(tokens=strings, sep=new_line('a'))
test_passed(13) = (size(strings, dim=1)==size(line, dim=1))
do l=1, size(strings, dim=1)
  test_passed(l+13) = (strings(l)==line(l))
  write(stdout, "(A,L1)") 'line: "'//strings(l)//'", is correct? ', test_passed(l+13)
enddo
close(scratch)

write(stdout, "(A,L1)") new_line('a')//'Are all tests passed? ', all(test_passed)
stop
!-----------------------------------------------------------------------------------------------------------------------------------
endprogram write_lines