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PDP-10 Archives
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BB-K818A-BM_1981
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sources/path.for
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C path> Construct filespecs
C Copyright (C) 1980, by Digital Equipment Corporation, Maynard, Mass.
C operating-system-dependent switches
C Copyright (C) 1980, by Digital Equipment Corporation, Maynard, Mass.
C
C
C C O P Y R I G H T
C
C
C Copyright (C) 1980 by
C Digital Equipment Corporation, Maynard, Mass.
C
C
C This software is furnished under a license and may be used and
C copied only in accordance with the terms of such license and
C with the inclusion of the above copyright notice. This
C software or any other copies thereof may not be provided or
C otherwise made available to any other person. No title to and
C ownership of the software is hereby transferred.
C
C The information in this software is subject to change without
C notice and should not be construed as a commitment by Digital
C Equipment Corporation.
C
C DIGITAL assumes no responsibility for the use or reliability
C of its software on equipment that is not supplied by DIGITAL.
C
C define char byte
C 27+128
C w(riting) opt(ion)s come groups of 8:
C (1) replace(0)/erase(1)/complement(2)/overlay(3)
C (2) negative image 0/1
C (3) pattern < 256 bit mask (e.g. 192 = P11000000)
C >= 256 canned pattern * 256 (e.g. 512 = P2)
C if value >= 256, low 8 bits are ignored
C (4) pattern multiplier, different from 6(?)
C (5) shading flag, sim pattern+ >= 10 use char
C (6) if shading != 0 this is y reference val
C (7) pixel multiplier, 1 <= value <= 10
C (8) alternating 0/1
C (9) foreground intensity, 0 <= value <= 7
C (10) background intensity, 0 <= value <= 7
C
C offsets from gwopsp...
C Inktypes...
C Inkolors...
C Text options
C RSTSONLY define Maxgels 1000 # due to limited RAM on RSTS
C drawing primitive gels...
C attribute/marker/other gels...
C writing attribute gels : Woptbase + wopindex
C similarly topts...
C maximum # of characters in a filespec
C maximum # of characters in a command line
C max length of prompt buffer
C max number of characters in file record
C size of record buffers (Fbufsz + 1)
C include logdef
C ========================================================================
C ========================================================================
C This module attempts to consolidate all the code that has to deal with
C building filespecs, as the format of a filespec varies from system to system.
C Completely-built filespecs are stored in the character-vector "pathn",
C which lives in the cpath COMMON block.
C
C The typical approach to file access is:
C 1. Call a routine in this module to build a filespec in pathn.
C 2. Call a routine (e.g., inpfil) that needs a filespec. This
C routine will expect to find the filepsec in pathn.
C To define a new file type:
C 1. Add a character variable to cpath
C 2. Initialize it in the following block data subprogram
block data
integer pathn ( 50 )
C inpfil, outfil expect to find pathname here
integer bkgdnm ( 50 )
C filepsec of "background" file
common / cpath / pathn , bkgdnm
C 3 characters plus Eos
integer fnttyp ( 4 ) , pictyp ( 4 ) , rpftyp ( 4 )
common / ctypes / fnttyp , pictyp , rpftyp
data fnttyp ( 1 ) , fnttyp ( 2 ) , fnttyp ( 3 ) , fnttyp ( 4 ) / 7
*0 , 78 , 84 , 0 /
data pictyp ( 1 ) , pictyp ( 2 ) , pictyp ( 3 ) , pictyp ( 4 ) / 8
*0 , 73 , 67 , 0 /
data rpftyp ( 1 ) , rpftyp ( 2 ) , rpftyp ( 3 ) , rpftyp ( 4 ) / 8
*2 , 80 , 70 , 0 /
data bkgdnm ( 1 ) / 0 /
end
C fspec - build filespec in pathn; if the filename doesn't already have a
C type, the caller-supplied type is added
integer function fspec ( fnam , ftyp )
integer fnam ( 1 ) , ftyp ( 1 )
integer pathn ( 50 )
C inpfil, outfil expect to find pathname here
integer bkgdnm ( 50 )
C filepsec of "background" file
common / cpath / pathn , bkgdnm
C 3 characters plus Eos
integer fnttyp ( 4 ) , pictyp ( 4 ) , rpftyp ( 4 )
common / ctypes / fnttyp , pictyp , rpftyp
integer anglef , c , i
logical typef
fspec = 0
call cpystr ( fnam , pathn )
C copy name to pathn
typef = . false .
C no type seen yet
i = 0
continue
23000 continue
i = i + 1
c = pathn ( i )
if(.not.( c .eq. 0 ))goto 23003
goto 23002
C if dot appears between < > or [ ], ignore it
23003 continue
if(.not.( c .eq. 60 ))goto 23005
anglef = anglef + 1
23005 continue
if(.not.( c .eq. 62 ))goto 23007
anglef = anglef - 1
23007 continue
if(.not.( c .eq. 91 ))goto 23009
anglef = anglef + 1
23009 continue
if(.not.( c .eq. 93 ))goto 23011
anglef = anglef - 1
23011 continue
if(.not.( c .eq. 46 .and. anglef .eq. 0 ))goto 23013
typef = . true .
23013 continue
C type is there
23001 goto 23000
23002 continue
if(.not.( typef .or. i .eq. 1 ))goto 23015
return
23015 continue
C typeless filename given?
pathn ( i ) = 46
C yes, add a dot
call cpystr ( ftyp , pathn ( i + 1 ) )
C append the type supplied by caller
end
C helpfl - build filespec for one of the various help text files
integer function helpfl ( nam )
integer nam ( 1 )
integer pathn ( 50 )
C inpfil, outfil expect to find pathname here
integer bkgdnm ( 50 )
C filepsec of "background" file
common / cpath / pathn , bkgdnm
C 3 characters plus Eos
integer fnttyp ( 4 ) , pictyp ( 4 ) , rpftyp ( 4 )
common / ctypes / fnttyp , pictyp , rpftyp
integer cpystr , i
integer prefix(7)
C stringdcl prefix GGLIB:GE
C stringdcl prefix GGLIB:GE
C string hlptyp .hlp
integer hlptyp ( 5 )
data hlptyp ( 1 ) , hlptyp ( 2 ) , hlptyp ( 3 ) , hlptyp ( 4 ) , h
*lptyp ( 5 ) / 46 , 104 , 108 , 112 , 0 /
data prefix /72,76,80,58,71,69,0/
C stringdata prefix GGLIB:GE
C stringdata prefix GGLIB:GE
helpfl = 0
i = cpystr ( prefix , pathn )
i = cpystr ( nam , pathn ( i ) ) + i - 1
C now the file name
i = cpystr ( hlptyp , pathn ( i ) )
C and the type
end