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|
subroutine intfile
c interface for builtin file
c Copyright INRIA
INCLUDE '../stack.h'
c
integer status,access,form,recl,old,new,scratc,unknow
integer sequen,direct,forma1,unform
integer clo,rew,bak,ope,mode(2)
integer top0,tops
logical getscalar
integer iadr,sadr
c
data old/857368/,new/2100759/,scratc/1707037/,unknow/1316638/
data sequen/1707548/,direct/1774093/,forma1/1775631/
data unform/988958/
data clo/12/,ope/24/,rew/27/,bak/11/,last/21/,nclas/29/
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
tops=top
top0=top-rhs+1
c
lw=lstk(top+1)
if(rhs.le.1) then
c . enquire
c
if(lhs.gt.5) then
call error(41)
return
endif
c . count opened files
n=0
nb=0
if(rhs.eq.1) then
if(.not.getscalar('file', top, top, lr))return
iu=stk(lr)
top=top-1
call getfileinfo(iu,ifa,iswap,ltype,mode,buf,lb,info)
if(info.ne.1.and.info.ne.2) n=1
nb=lb
else
i=-1
01 i=i+1
call getfileinfo(i,ifa,iswap,ltype,mode,buf,lb,info)
if(info.eq.1) goto 02
if(info.eq.2) goto 01
n=n+1
nb=nb+lb
goto 01
endif
02 continue
if(n.eq.0) then
err=lstk(top+1)+2*rhs-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
do 05 i=1,lhs
top=top+1
il=iadr(lstk(top))
istk(il)=1
istk(il+1)=0
istk(il+2)=0
istk(il+3)=0
lstk(top+1)=sadr(il+4)
05 continue
return
endif
c . allocate lhs variables
c
c . vector of units
top=top+1
ilu=iadr(lstk(top))
lu=sadr(ilu+4)
lstk(top+1)=lu+n
if(lhs.eq.1) goto 06
c . vector of types
top=top+1
ilt=iadr(lstk(top))
lt=ilt+5+n
lstk(top+1)=sadr(lt+n)
if(lhs.eq.2) goto 06
c . vector of file names
top=top+1
iln=iadr(lstk(top))
ln=iln+5+n
lstk(top+1)=sadr(ln+nb)
if(lhs.eq.3) goto 06
c . vector of modes
top=top+1
ilm=iadr(lstk(top))
lm=sadr(ilm+4)
lstk(top+1)=lm+n
if(lhs.eq.4) goto 06
c . vector of swap
top=top+1
ils=iadr(lstk(top))
ls=sadr(ils+4)
lstk(top+1)=ls+n
c
06 err=lstk(top+1)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
c . create lhs variable headers
c . vector of units
istk(ilu)=1
istk(ilu+1)=1
istk(ilu+2)=n
istk(ilu+3)=0
if(lhs.eq.1) goto 12
c . vector of types
istk(ilt)=10
istk(ilt+1)=1
istk(ilt+2)=n
istk(ilt+3)=0
istk(ilt+4)=1
do 10 i=1,n
istk(ilt+4+i)=i+1
10 continue
if(lhs.eq.2) goto 12
c . vector of names
istk(iln)=10
istk(iln+1)=1
istk(iln+2)=n
istk(iln+3)=0
istk(iln+4)=1
iln=iln+4
c
if(lhs.eq.3) goto 12
c . vector of modes
istk(ilm)=1
istk(ilm+1)=1
istk(ilm+2)=n
istk(ilm+3)=0
c
if(lhs.eq.4) goto 12
c . vector of swap
istk(ils)=1
istk(ils+1)=1
istk(ils+2)=n
istk(ils+3)=0
12 continue
c . get file infos
if(rhs.eq.1) then
c . unit
stk(lu)=iu
if(lhs.eq.1) goto 17
c . type
if(ltype.eq.2) then
istk(lt)=-12
else
istk(lt)=-15
endif
if(lhs.eq.2) goto 17
c . name
call cvstr(lb,istk(ln),buf,0)
istk(iln+1)=istk(iln)+lb
if(lhs.eq.3) goto 17
c . mode
stk(lm)=mode(1)
if(lhs.eq.4) goto 17
c . swap
stk(ls)=iswap
else
i=-1
15 i=i+1
call getfileinfo(i,ifa,iswap,ltype,mode,buf,lb,info)
if(info.eq.1) goto 17
if(info.eq.2) goto 15
c . unit
stk(lu)=i
lu=lu+1
if(lhs.eq.1) goto 15
c . type
if(ltype.eq.2) then
istk(lt)=-12
else
istk(lt)=-15
endif
lt=lt+1
if(lhs.eq.2) goto 15
c . name
call cvstr(lb,istk(ln),buf,0)
ln=ln+lb
istk(iln+1)=istk(iln)+lb
iln=iln+1
if(lhs.eq.3) goto 15
c . mode
stk(lm)=mode(1)
lm=lm+1
if(lhs.eq.4) goto 15
c . swap
stk(ls)=iswap
ls=ls+1
goto 15
endif
17 continue
return
endif
il=iadr(lstk(top))
if(lhs.gt.2) then
call error(41)
return
endif
c action
il=iadr(lstk(top+1-rhs))
if(istk(il).ne.10) then
err=1
call error(55)
return
endif
if(istk(il+1)*istk(il+2).ne.1) then
err=1
call error(36)
return
endif
l=il+5+istk(il+1)*istk(il+2)
itype=abs(istk(l))
c
if(itype.eq.ope) then
c
c open
if(rhs.gt.6) then
call error(39)
return
endif
c path
il=iadr(lstk(top+2-rhs))
if(istk(il).ne.10) then
err=2
call error(55)
return
endif
if(istk(il+1)*istk(il+2).ne.1) then
err=2
call error(36)
return
endif
l=il+5+istk(il+1)*istk(il+2)
mn=istk(il+5)-1
buf=' '
call cvstr(mn,istk(l),buf,1)
rhs=rhs-2
status=0
access=0
form=0
recl=0
if(rhs.eq.0) goto 145
do 143 i=1,rhs
il=iadr(lstk(top))
if(istk(il).eq.10) then
l=il+5+istk(il+1)*istk(il+2)
if(istk(il+5)-1.lt.3) then
call error(36)
return
endif
itype=abs(istk(l))+256*(abs(istk(l+1))+256*abs(istk(l+2))
$ )
if(itype.eq.new) then
status=0
elseif(itype.eq.old) then
status=1
elseif(itype.eq.scratc) then
status=2
elseif(itype.eq.unknow) then
status=3
elseif(itype.eq.sequen) then
access=0
elseif(itype.eq.direct) then
access=1
elseif(itype.eq.forma1) then
form=0
elseif(itype.eq.unform) then
form=1
endif
elseif(istk(il).eq.1) then
recl=int(stk(sadr(il+4)))
mode(2)=recl
else
err=i
call error(53)
return
endif
top=top-1
143 continue
145 mode(1)=status+10*(access+10*(form))
lunit=0
call clunit(lunit,buf(1:mn),mode)
if(err.gt.0) then
if(lhs.eq.1) then
buf(mn+1:)=' '
call error(err)
return
else
top=top-1
il=iadr(lstk(top))
istk(il)=1
istk(il+1)=0
istk(il+2)=0
istk(il+3)=0
l=sadr(il+4)
lstk(top+1)=l+1
top=top+1
il=iadr(lstk(top))
istk(il)=1
istk(il+1)=1
istk(il+2)=1
istk(il+3)=0
l=sadr(il+4)
stk(l)=err
lstk(top+1)=l+1
err=0
return
endif
endif
top=top-1
il=iadr(lstk(top))
istk(il)=1
istk(il+1)=1
istk(il+2)=1
istk(il+3)=0
l=sadr(il+4)
stk(l)=dble(lunit)
lstk(top+1)=l+1
if(lhs.eq.2) then
top=top+1
il=iadr(lstk(top))
istk(il)=1
istk(il+1)=1
istk(il+2)=1
istk(il+3)=0
l=sadr(il+4)
stk(l)=0.0d0
lstk(top+1)=l+1
endif
elseif(itype.eq.clo) then
c close
if(lhs.ne.1) then
call error(41)
return
endif
if(rhs.ne.2) then
call error(36)
return
endif
il1=iadr(lstk(top))
if(istk(il1).ne.1) then
err=rhs
call error(53)
return
endif
n=istk(il1+1)*istk(il1+2)
l=sadr(il1+4)
top=top-1
if(n.gt.0) then
mode(1)=0
do 151 i=1,n
lunit=int(stk(l-1+i))
if(lunit.ge.0) then
call clunit(-lunit,buf,mode)
endif
151 continue
endif
istk(il)=0
elseif(itype.eq.rew) then
c rewind
if(lhs.ne.1) then
call error(41)
return
endif
if(rhs.ne.2) then
call error(36)
return
endif
il1=iadr(lstk(top))
if(istk(il1).ne.1) then
err=rhs
call error(53)
return
endif
lunit=int(stk(sadr(il1+4)))
top=top-1
if(lunit.ge.0) then
call getfiletype(lunit,ltype,info)
if(info.eq.0) then
if(ltype.eq.2) then
call mseek(lunit,0,'set'//char(0),err)
else
rewind(lunit)
endif
endif
endif
istk(il)=0
goto 999
elseif(itype.eq.bak) then
c backspace
if(lhs.ne.1) then
call error(41)
return
endif
if(rhs.ne.2) then
call error(36)
return
endif
il1=iadr(lstk(top))
if(istk(il1).ne.1) then
err=rhs
call error(53)
return
endif
lunit=int(stk(sadr(il1+4)))
top=top-1
if(lunit.ge.0) then
call getfiletype(lunit,ltype,info)
if(info.eq.0) then
if(ltype.eq.2) then
err=1
call error(36)
return
else
backspace(lunit)
endif
endif
endif
c
istk(il)=0
elseif(itype.eq.last) then
c last
if(lhs.ne.1) then
call error(41)
return
endif
if(rhs.ne.2) then
call error(36)
return
endif
il1=iadr(lstk(top))
if(istk(il1).ne.1) then
err=rhs
call error(53)
return
endif
lunit=int(stk(sadr(il1+4)))
top=top-1
if(lunit.ge.0) then
call getfiletype(lunit,ltype,info)
if(info.eq.0) then
if(ltype.eq.2) then
call mseek(lunit,0,'end'//char(0),err)
else
154 read(lunit,'(a)',err=156,end=155)
go to 154
155 backspace(lunit)
endif
endif
endif
istk(il)=0
return
156 call error(49)
return
else
c incorrect action name
err=1
call error(36)
return
endif
999 return
end
|
