WSJT-X/lib/stdmsg.f90

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function stdmsg(msg0)
! Returns .true. if msg0 a standard "JT-style" message
! itype
! 1 Standard 72-bit structured message
! 2 Type 1 prefix
! 3 Type 1 suffix
! 4 Type 2 prefix
! 5 Type 2 suffix
! 6 Free text
! 7 Hashed calls (MSK144 short format)
! i3.n3
! 0.0 Free text
! 0.1 DXpeditiion mode
! 0.2 EU VHF Contest
! 0.3 ARRL Field Day <=16 transmitters
! 0.4 ARRL Field Day >16 transmitters
! 0.5 telemetry
! 0.6
! 0.7
! 1 Standard 77-bit structured message (optional /R)
! 2 EU VHF Contest (optional /P)
! 3 ARRL RTTY Contest
! 4 Nonstandard calls
use iso_c_binding, only: c_bool
use packjt
character*37 msg0,msg1,msg
integer dat(12)
logical(c_bool) :: stdmsg
msg1=msg0
i0=index(msg1,' OOO ')
if(i0.gt.10) msg1=msg0(1:i0)
call packmsg(msg0,dat,itype)
call unpackmsg(dat,msg)
msg(23:37)=' '
stdmsg=(msg.eq.msg1) .and. (itype.ge.0) .and. itype.ne.6
if(.not.stdmsg) then
call parse77(msg1,i3,n3)
if(i3.gt.0 .or. n3.gt.0) stdmsg=.true.
endif
return
end function stdmsg