(FILECREATED " 7-Jan-86 17:51:40" {ERIS}<LISPCORE>SOURCES>AOFD.;20 27420
changes to: (VARS AOFDCOMS)
previous date: " 7-Jan-86 13:29:03" {ERIS}<LISPCORE>SOURCES>AOFD.;19)
(* Copyright (c) 1981, 1982, 1983, 1984, 1985, 1986 by Xerox Corporation. All rights reserved.)
(PRETTYCOMPRINT AOFDCOMS)
(RPAQQ AOFDCOMS [(* streams (= OpenFileDescriptors))
(COMS (FNS CLOSEALL CLOSEF EOFCLOSEF INPUT OPENP OUTPUT POSITION RANDACCESSP
\IOMODEP WHENCLOSE)
(FNS STREAMADDPROP)
(INITVARS (DEFAULTEOFCLOSE (QUOTE NILL))
(\OPENFILES))
(GLOBALVARS DEFAULTEOFCLOSE \OPENFILES))
(COMS (* STREAM interface to Read and Write to random memory)
(DECLARE: DONTCOPY (EXPORT (RECORDS BASEBYTESTREAM)))
(FNS \BASEBYTES.IO.INIT \MAKEBASEBYTESTREAM \MBS.OUTCHARFN
\BASEBYTES.NAME.FROM.STREAM \BASEBYTES.BOUT \BASEBYTES.SETFILEPTR
\BASEBYTES.READP \BASEBYTES.BIN \BASEBYTES.PEEKBIN
\BASEBYTES.TRUNCATEFN \BASEBYTES.OPENFN \BASEBYTES.BLOCKIO)
(GLOBALVARS \BASEBYTESDEVICE)
(DECLARE: DONTEVAL@LOAD (P (\BASEBYTES.IO.INIT)))
(FNS OPENSTRINGSTREAM))
[COMS (* STREAM interface for old-style strings)
(FNS \STRINGSTREAM.INIT)
(DECLARE: DONTEVAL@LOAD DOCOPY (P (\STRINGSTREAM.INIT]
(COMS (FNS GETSTREAM \ADDOFD \CLEAROFD \DELETEOFD \GETSTREAM \RESETOFDS
\SEARCHOPENFILES)
(DECLARE: DONTCOPY (EXPORT (MACROS \INSTREAMARG \OUTSTREAMARG \STREAMARG)))
(MACROS GETOFD \GETOFD))
(LOCALVARS . T)
(DECLARE: DONTEVAL@LOAD DOEVAL@COMPILE DONTCOPY COMPILERVARS (ADDVARS
(NLAMA)
(NLAML)
(LAMA WHENCLOSE])
(* streams (= OpenFileDescriptors))
(DEFINEQ
(CLOSEALL
[LAMBDA (ALLFLG)
(DECLARE (LOCALVARS . T)) (* lmm "18-Sep-84 11:54")
(for STREAM in (PROG1 (APPEND \OPENFILES) (* Need to APPEND because CLOSEF will remove things
from \OPENFILES)
)
when [AND (fetch USERVISIBLE of STREAM)
(\IOMODEP STREAM NIL T)
(OR ALLFLG (NOT (STREAMPROP STREAM (QUOTE CLOSEALL]
collect (CLOSEF STREAM])
(CLOSEF
[LAMBDA (FILE) (* lmm " 2-Sep-84 15:51")
(PROG ((STREAM (\GETSTREAM FILE)))
(COND
((OR (\OUTTERMP STREAM)
(NOT (fetch USERCLOSEABLE of STREAM)))
(RETURN NIL)))
[MAPC (STREAMPROP STREAM (QUOTE BEFORECLOSE))
(FUNCTION (LAMBDA (FN)
(APPLY* FN STREAM]
(\CLEAROFD)
(COND
((EQ STREAM \PRIMIN.OFD)
(SETQ \PRIMIN.OFD \LINEBUF.OFD)))
(COND
((EQ STREAM \PRIMOUT.OFD)
(SETQ \PRIMOUT.OFD \TERM.OFD)))
(\DELETEOFD STREAM)
(* Logical close before physical close; otherwise, we might have a logically open file with no physically open
file behind it. (Device LPT depends on this))
(\CLOSEFILE STREAM)
[MAPC (STREAMPROP STREAM (QUOTE AFTERCLOSE))
(FUNCTION (LAMBDA (FN)
(APPLY* FN STREAM]
(RETURN (fetch FULLNAME of STREAM])
(EOFCLOSEF
[LAMBDA (FILE) (* bvm: "15-Jan-85 17:58")
(DECLARE (LOCALVARS . T))
(PROG ((STREAM (GETSTREAM FILE)))
(APPLY* (OR (STREAMPROP STREAM (QUOTE EOFCLOSE))
DEFAULTEOFCLOSE)
STREAM])
(INPUT
[LAMBDA (FILE) (* lmm " 7-Jan-86 12:54")
(PROG1 (if (EQ \PRIMIN.OFD \LINEBUF.OFD)
then T
else (fetch FULLNAME of \PRIMIN.OFD))
(COND
(FILE (SETQ \PRIMIN.OFD (COND
((EQ FILE T) (* Check explicitly for T to avoid needless creations)
\LINEBUF.OFD)
(T (\GETSTREAM FILE (QUOTE INPUT])
(OPENP
[LAMBDA (FILE ACCESS) (* rmk: "14-OCT-83 15:31")
(DECLARE (GLOBALVARS \OPENFILES))
(for STREAM in \OPENFILES first [COND
(FILE (RETURN (AND (SETQ STREAM (\GETSTREAM FILE ACCESS T))
(fetch FULLNAME of STREAM]
when (AND (fetch USERVISIBLE of STREAM)
(\IOMODEP STREAM ACCESS T))
collect (fetch FULLNAME of STREAM])
(OUTPUT
[LAMBDA (FILE) (* lmm " 7-Jan-86 11:36")
(PROG1 (if (EQ \PRIMOUT.OFD \TERM.OFD)
then T
else (fetch FULLNAME of \PRIMOUT.OFD))
(COND
(FILE (SETQ \PRIMOUT.OFD (COND
((EQ FILE T) (* Check for this special so we don't create a tty
window needlessly)
\TERM.OFD)
(T (\GETSTREAM FILE (QUOTE OUTPUT])
(POSITION
[LAMBDA (FILE N) (* rmk: "14-OCT-83 15:32")
(PROG [(STRM (COND
(FILE (\GETSTREAM FILE))
(T \PRIMOUT.OFD]
(RETURN (PROG1 (fetch CHARPOSITION of STRM)
(COND
(N (replace CHARPOSITION of STRM with (COND
((IGREATERP N 0)
N)
(T
(* compatible with PDP-10 version)
0])
(RANDACCESSP
[LAMBDA (FILE) (* rmk: "14-OCT-83 15:32")
(PROG ((STREAM (\GETSTREAM FILE)))
(RETURN (AND (fetch RANDOMACCESSP of (fetch DEVICE of STREAM))
(NEQ STREAM \LINEBUF.OFD)
(fetch FULLNAME of STREAM])
(\IOMODEP
[LAMBDA (STREAM ACCESS NOERROR) (* rmk: "21-OCT-83 11:10")
(* Returns STREAM if it represents a File open with
access mode ACCESS)
(COND
([COND
((NOT ACCESS)
(fetch ACCESS of STREAM))
((EQ ACCESS (fetch ACCESS of STREAM)))
[(EQ (fetch ACCESS of STREAM)
(QUOTE BOTH))
(FMEMB ACCESS (QUOTE (INPUT OUTPUT]
((EQ (fetch ACCESS of STREAM)
(QUOTE APPEND))
(EQ ACCESS (QUOTE OUTPUT]
STREAM)
(T (\FILE.NOT.OPEN STREAM NOERROR])
(WHENCLOSE
[LAMBDA NARGS (* lmm " 2-Sep-84 16:07")
(DECLARE (LOCALVARS . T))
(PROG [(STREAM (AND (IGREATERP NARGS 0)
(GETSTREAM (ARG NARGS 1]
[for I FN from 2 to NARGS by 2
do [SETQ FN (AND (IGREATERP NARGS I)
(ARG NARGS (ADD1 I]
(SELECTQ (ARG NARGS I)
[CLOSEALL (STREAMPROP STREAM (QUOTE CLOSEALL)
(SELECTQ FN
(NO T)
(YES NIL)
(ERRORX (LIST 27 FN]
[BEFORE (COND
(FN (STREAMADDPROP STREAM (QUOTE BEFORECLOSE)
FN T]
[AFTER (COND
(FN (STREAMADDPROP STREAM (QUOTE AFTERCLOSE)
FN T]
(STATUS (STREAMPROP STREAM (QUOTE STATUSFN)
FN))
(EOF (STREAMPROP STREAM (QUOTE EOFCLOSE)
FN))
(ERRORX (LIST 27 (ARG NARGS I]
(RETURN STREAM])
)
(DEFINEQ
(STREAMADDPROP
[LAMBDA (STREAM PROP VAL)
(STREAMPROP STREAM PROP (CONS VAL (STREAMPROP STREAM PROP])
)
(RPAQ? DEFAULTEOFCLOSE (QUOTE NILL))
(RPAQ? \OPENFILES )
(DECLARE: DOEVAL@COMPILE DONTCOPY
(GLOBALVARS DEFAULTEOFCLOSE \OPENFILES)
)
(* STREAM interface to Read and Write to random memory)
(DECLARE: DONTCOPY
(* FOLLOWING DEFINITIONS EXPORTED)
[DECLARE: EVAL@COMPILE
(RECORD BASEBYTESTREAM STREAM (SUBRECORD STREAM)
[ACCESSFNS ((BIASOFFST (fetch (STREAM FW6) of DATUM)
(replace (STREAM FW6) of DATUM
with NEWVALUE))
(BBSNCHARS (fetch (STREAM FW7) of DATUM)
(replace (STREAM FW7) of DATUM
with NEWVALUE))
(WRITEXTENSIONFN (fetch (STREAM F1) of DATUM)
(replace (STREAM F1) of DATUM
with NEWVALUE])
]
(* END EXPORTED DEFINITIONS)
)
(DEFINEQ
(\BASEBYTES.IO.INIT
(LAMBDA NIL
(DECLARE (GLOBALVARS \BASECHARDEVICE)) (* JonL " 8-NOV-83 03:11")
(SETQ \BASEBYTESDEVICE (create FDEV
DEVICENAME ←(QUOTE BASEBYTES)
RESETABLE ← T
RANDOMACCESSP ← T
PAGEMAPPED ← NIL
FDBINABLE ← T
FDBOUTABLE ← T
FDEXTENDABLE ← NIL
CLOSEFILE ←(FUNCTION NILL)
DELETEFILE ←(FUNCTION NILL)
DIRECTORYNAMEP ←(FUNCTION NILL)
EVENTFN ←(FUNCTION NILL)
GENERATEFILES ←(FUNCTION \GENERATENOFILES)
GETFILEINFO ←(FUNCTION NILL)
GETFILENAME ←(FUNCTION \BASEBYTES.NAME.FROM.STREAM)
HOSTNAMEP ←(FUNCTION NILL)
OPENFILE ←(FUNCTION \BASEBYTES.OPENFN)
READPAGES ←(FUNCTION NILL)
REOPENFILE ←(FUNCTION (LAMBDA (FILE ACCESS RECOG OTHERINFO FDEV
STREAM)
STREAM))
SETFILEINFO ←(FUNCTION NILL)
TRUNCATEFILE ←(FUNCTION (LAMBDA (STREAM I)))
WRITEPAGES ←(FUNCTION \ILLEGAL.DEVICEOP)
BIN ←(FUNCTION \BASEBYTES.BIN)
BOUT ←(FUNCTION \BASEBYTES.BOUT)
PEEKBIN ←(FUNCTION \BASEBYTES.PEEKBIN)
READP ←(FUNCTION \BASEBYTES.READP)
BACKFILEPTR ←(FUNCTION (LAMBDA (STREAM)
(AND (NEQ (fetch COFFSET of STREAM)
(fetch BIASOFFST of STREAM))
(\PAGEDBACKFILEPTR STREAM))))
SETFILEPTR ←(FUNCTION \BASEBYTES.SETFILEPTR)
GETFILEPTR ←(FUNCTION (LAMBDA (STREAM)
(IDIFFERENCE (fetch COFFSET of STREAM)
(fetch BIASOFFST of STREAM))))
GETEOFPTR ←(FUNCTION (LAMBDA (STREAM)
(IDIFFERENCE (fetch EOFFSET of STREAM)
(fetch BIASOFFST of STREAM))))
EOFP ←(FUNCTION (LAMBDA (STREAM)
(IGEQ (fetch COFFSET of STREAM)
(fetch EOFFSET of STREAM))))
BLOCKIN ←(FUNCTION (LAMBDA (STREAM BASE OFFST N)
(\BASEBYTES.BLOCKIO STREAM BASE OFFST N (QUOTE INPUT))))
BLOCKOUT ←(FUNCTION (LAMBDA (STREAM BASE OFFST N)
(\BASEBYTES.BLOCKIO STREAM BASE OFFST N (QUOTE OUTPUT))))
RENAMEFILE ←(FUNCTION \ILLEGAL.DEVICEOP)))
(\DEFINEDEVICE NIL \BASEBYTESDEVICE)))
(\MAKEBASEBYTESTREAM
[LAMBDA (BASE OFFST LEN ACCESS WRITEXTENSIONFN OSTREAM) (* rmk: "26-Mar-85 22:15")
(* If an error is to occur due to non-numeric arg or
range restrictions, then let it happen outside the
UNINTERRUPTABLY)
(OR BASE (EQ LEN 0)
(SHOULDNT))
(OR (AND (SMALLP OFFST)
(SMALLP LEN)
(SMALLP (add LEN OFFST)))
(SHOULDNT "Currently can't support fixp-sized offsets"))
(SELECTQ ACCESS
(NIL (SETQ ACCESS (QUOTE INPUT)))
((INPUT OUTPUT BOTH))
(\ILLEGAL.ARG ACCESS))
(if (type? STREAM OSTREAM)
then (if (EQ (ffetch (STREAM DEVICE) of OSTREAM)
\BASEBYTESDEVICE)
then (replace ACCESS of OSTREAM with NIL)
else (CLOSEF OSTREAM)
(SETQ OSTREAM (create BASEBYTESTREAM
DEVICE ← \BASEBYTESDEVICE smashing OSTREAM)))
else (SETQ OSTREAM (create BASEBYTESTREAM
DEVICE ← \BASEBYTESDEVICE)))
(UNINTERRUPTABLY
(freplace USERCLOSEABLE of OSTREAM with NIL)
(freplace USERVISIBLE of OSTREAM with NIL)
(freplace BYTESIZE of OSTREAM with BITSPERBYTE)
(freplace CPAGE of OSTREAM with (freplace EPAGE of OSTREAM with 0))
(freplace CPPTR of OSTREAM with BASE)
(freplace COFFSET of OSTREAM with (freplace BIASOFFST of OSTREAM with OFFST))
(freplace CBUFSIZE of OSTREAM with (freplace EOFFSET of OSTREAM with LEN))
(replace ACCESS of OSTREAM with ACCESS)
(* Insures that the BINABLE BOUTABLE and EXTENDABLE bits are setup setup, and that the correct BIN and BOUT fns are
"inherited" from the FDEV as well)
(freplace FULLFILENAME of OSTREAM with NIL)
(freplace OUTCHARFN of OSTREAM with (FUNCTION \MBS.OUTCHARFN))
(freplace LINELENGTH of OSTREAM with 0)
(freplace CHARPOSITION of OSTREAM with 0)
(freplace WRITEXTENSIONFN of OSTREAM with (SELECTQ ACCESS
((OUTPUT BOTH)
WRITEXTENSIONFN)
NIL))
(freplace BBSNCHARS of OSTREAM with 0))
OSTREAM])
(\MBS.OUTCHARFN
(LAMBDA (STREAM CHAR) (* JonL " 7-NOV-83 21:54")
(BOUT (SETQ STREAM (\DTEST STREAM (QUOTE STREAM)))
CHAR) (* The BBSNCHARS field *may* just be paralleling the
CHARPOSITION field of the stream.)
(add (ffetch BBSNCHARS of STREAM)
1)))
(\BASEBYTES.NAME.FROM.STREAM
(LAMBDA (STREAM) (* JonL " 7-NOV-83 21:38")
(* STRING streams have a FULLFILENAME which is just the
string itself; other random basebytes streams have this
field null)
(OR (fetch FULLFILENAME of STREAM)
(LIST (fetch CPPTR of STREAM)
(fetch BIASOFFST of STREAM)
(GETEOFPTR STREAM)))))
(\BASEBYTES.BOUT
(LAMBDA (STREAM BYTE) (* JonL " 7-NOV-83 21:14")
(PROG (CO)
A (if (IGEQ (SETQ CO (fetch COFFSET of STREAM))
(fetch EOFFSET of STREAM))
then (if (SETQ CO (fetch (BASEBYTESTREAM WRITEXTENSIONFN) of STREAM))
then (APPLY* CO STREAM)
(GO A)
else (ERROR "Attempt to write past end of bytes block")))
(RETURN (\PUTBASEBYTE (fetch CPPTR of STREAM)
(PROG1 CO (freplace COFFSET of STREAM with (ADD1 CO)))
BYTE)))))
(\BASEBYTES.SETFILEPTR
(LAMBDA (STREAM I) (* JonL " 7-NOV-83 22:56")
(PROG ((I' I))
(SELECTQ (SYSTEMTYPE)
(VAX (if (fetch FULLFILENAME of STREAM)
then (RETURN (replace F2 of STREAM with INDX))))
NIL)
(add I'(fetch BIASOFFST of STREAM))
(if (IGREATERP I'(fetch EOFFSET of STREAM))
then (ERROR "Beyond end of byte range" I)
else (replace COFFSET of STREAM with I')))))
(\BASEBYTES.READP
[LAMBDA (STREAM FLG) (* bvm: "14-Feb-85 00:21")
(PROG ((CO (fetch COFFSET of STREAM))
(#LEFT (fetch EOFFSET of STREAM)))
(add #LEFT (IMINUS CO))
(RETURN (OR (IGEQ #LEFT 2)
(if (EQ #LEFT 0)
then NIL
elseif FLG
else (NEQ (\GETBASEBYTE (fetch CPPTR of STREAM)
(fetch COFFSET of STREAM))
(CHARCODE CR])
(\BASEBYTES.BIN
(LAMBDA (STREAM) (* JonL " 7-NOV-83 22:49")
(* Normally, the microcoded version of BIN will handle this, since the BINABLE flag is set and since the COFFSET
etc fields are setup appropriately)
(* Remember also that the VAX version installs a
different STRMBINFN for the stringstream case)
(PROG1 (\BASEBYTES.PEEKBIN STREAM)
(add (fetch COFFSET of STREAM)
1))))
(\BASEBYTES.PEEKBIN
(LAMBDA (STREAM NOERRORFLG) (* JonL " 7-NOV-83 23:41")
(PROG ((CO (fetch COFFSET of STREAM)))
(SELECTQ (SYSTEMTYPE)
(VAX (if (fetch FULLNAME of STREAM)
then (* Aha, it's a string stream)
(RETURN (\STRINGPEEKBIN STREAM NOERRORFLG))))
NIL)
(RETURN (if (IGEQ CO (fetch EOFFSET of STREAM))
then (if (NOT NOERRORFLG)
then (STREAMOP (QUOTE ENDOFSTREAMOP)
STREAM STREAM))
else (\GETBASEBYTE (fetch CPPTR of STREAM)
CO))))))
(\BASEBYTES.TRUNCATEFN
(LAMBDA (STREAM I) (* JonL " 7-NOV-83 22:20")
((LAMBDA (I' BO EO)
(add I' BO)
(if (ILESSP I 0)
then (add I' EO))
(if (OR (ILESSP I BO)
(IGREATERP I' EO))
then (ERROR "Beyond end of byte range" I)
else (replace EOFFSET of STREAM with I')))
I
(fetch BIASOFFST of STREAM)
(fetch EOFFSET of STREAM))))
(\BASEBYTES.OPENFN
[LAMBDA (NAME ACCESS RECOG OTHERINFO FDEV) (* lmm "16-Aug-84 13:17")
(if (fetch FULLFILENAME of NAME)
then (OPENSTRINGSTREAM NAME ACCESS)
else (\MAKEBASEBYTESTREAM (fetch CPPTR of NAME)
(fetch BIASOFFST of NAME)
(GETEOFPTR NAME)
ACCESS
(fetch WRITEXTENSIONFN of NAME)
NAME])
(\BASEBYTES.BLOCKIO
[LAMBDA (STREAM BASE OFFST N DIRECTION) (* JonL " 8-JUL-83 01:54")
(PROG (SBASE CO EO)
A (if (ILEQ N 0)
then (RETURN))
(SETQ SBASE (fetch CPPTR of STREAM))
(SETQ CO (fetch COFFSET of STREAM))
(SETQ EO (fetch EOFFSET of STREAM))
(if (IGREATERP N (IDIFFERENCE EO (SUB1 CO)))
then (if (EQ DIRECTION (QUOTE INPUT))
then (STREAMOP (QUOTE ENDOFSTREAMOP)
STREAM STREAM)
else (* Do a single BOUT to see if the WRITEXTENSIONFN will
fix it up)
(BOUT STREAM (\GETBASEBYTE BASE OFFST))
(add OFFST 1)
(add N -1)
(GO A)))
(replace COFFSET of STREAM with (IPLUS CO N))
(if (EQ DIRECTION (QUOTE OUTPUT))
then (swap SBASE BASE)
(swap CO OFFST))
(\MOVEBYTES SBASE CO BASE OFFST N])
)
(DECLARE: DOEVAL@COMPILE DONTCOPY
(GLOBALVARS \BASEBYTESDEVICE)
)
(DECLARE: DONTEVAL@LOAD
(\BASEBYTES.IO.INIT)
)
(DEFINEQ
(OPENSTRINGSTREAM
[LAMBDA (STR ACCESS) (* rmk: "28-Mar-85 08:40")
(* Does not register the stream on \OPENFILES, nor does it search \OPENFILES for a previously opened stream.
Thus, this implementation does not side-effect the string as the 10 does. However, the temporary coercion of strings
to open streams in \GETSTREAM does simulate the side-effecting. Note that a string stream is unnamed.)
(PROG (STREAM FATP)
(OR (STRINGP STR)
(\ILLEGAL.ARG STR))
(SETQ FATP (ffetch (STRINGP FATSTRINGP) of STR))
[SETQ STREAM (\MAKEBASEBYTESTREAM (OR (ffetch (STRINGP BASE) of STR)
T)
(COND
(FATP (UNFOLD (ffetch (STRINGP OFFST) of STR)
BYTESPERWORD))
(T (ffetch (STRINGP OFFST) of STR)))
(COND
(FATP (UNFOLD (ffetch (STRINGP LENGTH) of STR)
BYTESPERWORD))
(T (ffetch (STRINGP LENGTH) of STR)))
(SELECTQ ACCESS
((INPUT OUTPUT BOTH)
ACCESS)
(NIL (QUOTE INPUT))
(\ILLEGAL.ARG ACCESS]
(PROGN (* Minor differences between a basebytestream and a
stringstream)
(if FATP
then (freplace (STREAM CHARSET) of STREAM with \NORUNCODE))
(freplace USERCLOSEABLE of STREAM with T)
(freplace USERVISIBLE of STREAM with T)
(SELECTQ (SYSTEMTYPE)
(VAX (freplace F2 of STREAM with 0)
(freplace STRMBINFN of STREAM with (FUNCTION \STRINGBIN)))
NIL))
(RETURN STREAM])
)
(* STREAM interface for old-style strings)
(DEFINEQ
(\STRINGSTREAM.INIT
[LAMBDA NIL (* bvm: "14-Feb-85 00:25")
(SETQ \STRINGSTREAM.FDEV (create FDEV
DEVICENAME ←(QUOTE STRING)
CLOSEFILE ←(FUNCTION NILL)
DELETEFILE ←(FUNCTION NILL)
DIRECTORYNAMEP ←(FUNCTION NILL)
EVENTFN ←(FUNCTION NILL)
GENERATEFILES ←(FUNCTION \NULLFILEGENERATOR)
GETFILEINFO ←(FUNCTION NILL)
GETFILENAME ←(FUNCTION NILL)
HOSTNAMEP ←(FUNCTION NILL)
OPENFILE ←(FUNCTION NILL)
READPAGES ←(FUNCTION \ILLEGAL.DEVICEOP)
REOPENFILE ←(FUNCTION [LAMBDA (FILE ACCESS RECOG OTHERINFO FDEV
STREAM)
STREAM])
SETFILEINFO ←(FUNCTION NILL)
TRUNCATEFILE ←(FUNCTION NILL)
WRITEPAGES ←(FUNCTION \ILLEGAL.DEVICEOP)
BIN ←[FUNCTION (LAMBDA (STREAM)
(replace F2 of STREAM
with (COND
((fetch F1 of STREAM)
(PROG1 (fetch F1 of STREAM)
(replace F1 of STREAM with NIL)))
((GNCCODE (fetch FULLFILENAME of STREAM)))
(T (\EOF.ACTION STREAM]
PEEKBIN ←[FUNCTION (LAMBDA (STREAM NOERRORFLG)
(OR (fetch F1 of STREAM)
(CHCON1 (fetch FULLFILENAME of STREAM))
(AND (NOT NOERRORFLG)
(\EOF.ACTION STREAM]
READP ←[FUNCTION (LAMBDA (STREAM)
(NOT (EOFP STREAM]
BACKFILEPTR ←[FUNCTION (LAMBDA (STREAM)
(replace F1 of STREAM with (fetch F2 of STREAM]
EOFP ←(FUNCTION (LAMBDA (STREAM)
(AND (NOT (fetch F1 of STREAM))
(EQ (NCHARS (fetch FULLFILENAME of STREAM))
0])
)
(DECLARE: DONTEVAL@LOAD DOCOPY
(\STRINGSTREAM.INIT)
)
(DEFINEQ
(GETSTREAM
[LAMBDA (FILE ACCESS NOERROR) (* rrb "31-Oct-85 09:36")
(* USER ENTRY)
(\GETSTREAM FILE ACCESS NOERROR])
(\ADDOFD
[LAMBDA (STREAM) (* rmk: "21-OCT-83 16:32")
(* Returns the STREAM it adds to \OPENFILES)
(\CLEAROFD)
(AND (fetch NAMEDP of STREAM)
(push \OPENFILES STREAM))
STREAM])
(\CLEAROFD
[LAMBDA NIL (* lmm "30-SEP-80 20:08")
(* IF GETOFD CACHES ITS ARGS, THIS CAN CLEAR THE CACHE)
])
(\DELETEOFD
[LAMBDA (OFD) (* rmk: "25-OCT-79 08:20")
(SETQ \OPENFILES (DREMOVE OFD \OPENFILES])
(\GETSTREAM
[LAMBDA (X ACCESS NOERROR) (* lmm "30-Dec-85 18:43")
(* \GETSTREAM accepts either a: file name, a file handle, stream, a string, NIL, T, or a partial file name.
-
ACCESS is INPUT, OUTPUT, APPEND, BOTH or NIL -
NOERROR, if non-NIL, means to return NIL if the file is not open in the specified access mode;
otherwise, an error is caused)
(DECLARE (GLOBALVARS \DEFAULTLINEBUF \DEFAULTTTYDISPLAYSTREAM))
(COND
((NULL X)
(SELECTQ ACCESS
(INPUT (COND
((AND (EQ \PRIMIN.OFD \DEFAULTLINEBUF)
(EQ \KEYBOARD.STREAM (fetch (LINEBUFFER KEYBOARDSTREAM)
of \LINEBUF.OFD)))
(\CREATE.TTYDISPLAYSTREAM)))
\PRIMIN.OFD)
(OUTPUT (COND
((AND \DEFAULTTTYDISPLAYSTREAM (EQ \PRIMOUT.OFD
\DEFAULTTTYDISPLAYSTREAM))
(\CREATE.TTYDISPLAYSTREAM)))
\PRIMOUT.OFD)
(\IOMODEP (COND
((NOT (EQ \PRIMIN.OFD \LINEBUF.OFD))
\PRIMIN.OFD)
(T \PRIMOUT.OFD))
ACCESS NOERROR)))
((EQ X T)
(SELECTQ ACCESS
(INPUT (COND
((EQ \LINEBUF.OFD \DEFAULTLINEBUF)
(\CREATE.TTYDISPLAYSTREAM)))
\LINEBUF.OFD)
((OUTPUT NIL)
(COND
((AND \DEFAULTTTYDISPLAYSTREAM (EQ \TERM.OFD \DEFAULTTTYDISPLAYSTREAM))
(\CREATE.TTYDISPLAYSTREAM)))
\TERM.OFD)
(\FILE.NOT.OPEN X NOERROR)))
((type? STREAM X)
(\IOMODEP X ACCESS NOERROR))
((LITATOM X)
(OR (\SEARCHOPENFILES X ACCESS)
(\FILE.NOT.OPEN X NOERROR)))
((STRINGP X)
(SELECTQ ACCESS
((NIL INPUT)
NIL)
(\FILE.NOT.OPEN X NOERROR))
(\SETACCESS (SETQ X (create STREAM
DEVICE ← \STRINGSTREAM.FDEV
FULLFILENAME ← X))
(QUOTE INPUT))
X)
((AND (OR (EQ ACCESS (QUOTE OUTPUT))
(NULL ACCESS))
(type? WINDOW X))
(fetch (WINDOW DSP) of X))
(T (\FILE.NOT.OPEN X NOERROR])
(\RESETOFDS
[LAMBDA NIL (* rrb "22-JUL-83 15:51")
(DECLARE (GLOBALVARS \OPENFILES))
[MAP.PROCESSES (FUNCTION (LAMBDA NIL
(\OPENLINEBUF)
(SETQ \PRIMOUT.OFD \TERM.OFD)
(SETQ \PRIMIN.OFD \LINEBUF.OFD)
(SETQ \DRIBBLE.OFD]
(for OFD in \OPENFILES
do (replace CPPTR of OFD with NIL)
(FORGETPAGES OFD)
(replace ACCESS of OFD with NIL)) (* Perhaps do the AFTER function ?)
(SETQ \OPENFILES])
(\SEARCHOPENFILES
[LAMBDA (NAME ACCESS) (* rmk: "14-OCT-83 15:04")
(* Returns a stream whose fullname is NAME if it has
accessmode ACCESS)
(for STREAM in \OPENFILES when (EQ NAME (fetch FULLNAME of STREAM))
do (RETURN (COND
(ACCESS (\IOMODEP STREAM ACCESS T))
(T STREAM])
)
(DECLARE: DONTCOPY
(* FOLLOWING DEFINITIONS EXPORTED)
(DECLARE: EVAL@COMPILE
(PUTPROPS \INSTREAMARG MACRO ((STRM NOERRORFLG)
(\GETSTREAM STRM (QUOTE INPUT)
NOERRORFLG)))
(PUTPROPS \OUTSTREAMARG MACRO ((STRM NOERRORFLG)
(\GETSTREAM STRM (QUOTE OUTPUT)
NOERRORFLG)))
[PUTPROPS \STREAMARG MACRO (OPENLAMBDA (STRM NOERRORFLG)
(COND (NOERRORFLG (\GETSTREAM STRM NIL T))
(T (\DTEST STRM (QUOTE STREAM]
)
(* END EXPORTED DEFINITIONS)
)
(DECLARE: EVAL@COMPILE
(PUTPROPS GETOFD MACRO (= . GETSTREAM))
(PUTPROPS \GETOFD MACRO (= . \GETSTREAM))
)
(DECLARE: DOEVAL@COMPILE DONTCOPY
(LOCALVARS . T)
)
(DECLARE: DONTEVAL@LOAD DOEVAL@COMPILE DONTCOPY COMPILERVARS
(ADDTOVAR NLAMA )
(ADDTOVAR NLAML )
(ADDTOVAR LAMA WHENCLOSE)
)
(PUTPROPS AOFD COPYRIGHT ("Xerox Corporation" 1981 1982 1983 1984 1985 1986))
(DECLARE: DONTCOPY
(FILEMAP (NIL (1695 7257 (CLOSEALL 1705 . 2215) (CLOSEF 2217 . 3189) (EOFCLOSEF 3191 . 3494) (INPUT
3496 . 3956) (OPENP 3958 . 4422) (OUTPUT 4424 . 4915) (POSITION 4917 . 5412) (RANDACCESSP 5414 . 5734)
(\IOMODEP 5736 . 6379) (WHENCLOSE 6381 . 7255)) (7258 7380 (STREAMADDPROP 7268 . 7378)) (8192 18439 (
\BASEBYTES.IO.INIT 8202 . 10402) (\MAKEBASEBYTESTREAM 10404 . 12766) (\MBS.OUTCHARFN 12768 . 13154) (
\BASEBYTES.NAME.FROM.STREAM 13156 . 13662) (\BASEBYTES.BOUT 13664 . 14262) (\BASEBYTES.SETFILEPTR
14264 . 14815) (\BASEBYTES.READP 14817 . 15328) (\BASEBYTES.BIN 15330 . 15890) (\BASEBYTES.PEEKBIN
15892 . 16553) (\BASEBYTES.TRUNCATEFN 16555 . 17021) (\BASEBYTES.OPENFN 17023 . 17425) (
\BASEBYTES.BLOCKIO 17427 . 18437)) (18555 20406 (OPENSTRINGSTREAM 18565 . 20404)) (20458 22348 (
\STRINGSTREAM.INIT 20468 . 22346)) (22404 26535 (GETSTREAM 22414 . 22641) (\ADDOFD 22643 . 22964) (
\CLEAROFD 22966 . 23199) (\DELETEOFD 23201 . 23355) (\GETSTREAM 23357 . 25513) (\RESETOFDS 25515 .
26080) (\SEARCHOPENFILES 26082 . 26533)))))
STOP