(DEFINE-FILE-INFO PACKAGE "IL" READTABLE "INTERLISP" BASE 10)
(FILECREATED "13-Jan-88 14:42:28" {QV}<NOTECARDS>1.3LNEXT>RGPATCH071.;2 26034
changes to%: (VARS RGPATCH071COMS)
(FNS \TEDIT.COMMAND.LOOP)
previous date%: "13-Jan-88 12:42:46" {QV}<NOTECARDS>1.3LNEXT>RGPATCH071.;1)
(* "
Copyright (c) 1988 by Xerox Corporation. All rights reserved.
")
(PRETTYCOMPRINT RGPATCH071COMS)
(RPAQQ RGPATCH071COMS (
(* ;;; "rg 1/13/88: fixes two bugs: ")
(* ;; "1) \TEDIT.COMMAND.LOOP now checks EDITFINISHEDFLG while waiting for TTY, so can't get hung forever.")
(* ;; "2) Now checks TTY.PROCESSP before calling FLASHCARET, to eliminate spurious caret images hanging around.")
(* ;; "(DECLARE%%: DONTCOPY DONTEVAL@LOAD EVAL@COMPILE (FILES (FROM {ERIS}<TEDIT>) TEDITDECLS (FROM LISPUSERS) EXPORTS.ALL))")
(FNS \TEDIT.COMMAND.LOOP \TEDIT.WAITFORSYSBUFP)
(PROP (FILETYPE MAKEFILE-ENVIRONMENT)
RGPATCH071)))
(* ;;; "rg 1/13/88: fixes two bugs: ")
(* ;;
"1) \TEDIT.COMMAND.LOOP now checks EDITFINISHEDFLG while waiting for TTY, so can't get hung forever.")
(* ;;
"2) Now checks TTY.PROCESSP before calling FLASHCARET, to eliminate spurious caret images hanging around."
)
(* ;;
"(DECLARE%%: DONTCOPY DONTEVAL@LOAD EVAL@COMPILE (FILES (FROM {ERIS}<TEDIT>) TEDITDECLS (FROM LISPUSERS) EXPORTS.ALL))"
)
(DEFINEQ
(\TEDIT.COMMAND.LOOP
[LAMBDA (STREAM RTBL) (* ; "Edited 13-Jan-88 12:27 by Randy.Gobbel")
(* ; "rg 1/13/88: changed \WAITFORSYSBUFP to \TEDIT.WAITFORSYSBUFP, which returns NIL if it finds EDITFINISHEDFLG set. \WAITFORSYSBUFP could sometimes wait forever for the TTY.")
(* ;;
"Main command loop for the TEDIT editor. Includes keyboard polling and command dispatch")
(PROG ((TEXTOBJ (COND
((type? STREAM STREAM)
(fetch (TEXTSTREAM TEXTOBJ) of STREAM))
(T STREAM)))
(ISCRSTRING (ALLOCSTRING \SCRATCHLEN " "))
SEL WINDOW LINES IPASSSTRING TTYWINDOW)
(SETQ SEL (fetch SEL of TEXTOBJ))
(SETQ WINDOW (fetch \WINDOW of TEXTOBJ))
(SETQ LINES (fetch LINES of TEXTOBJ))
(SETQ IPASSSTRING (SUBSTRING ISCRSTRING 1)) (* ; "Used inside \INSERT\TTY\BUFFER")
(SETQ RTBL (OR RTBL (fetch TXTRTBL of TEXTOBJ)
TEDIT.READTABLE)) (* ;
"Used to derive command characters from type-in")
(for WW inside WINDOW do (WINDOWPROP WW 'PROCESS (THIS.PROCESS)))
(* ; "And the window to this process")
(while (NOT (TTY.PROCESSP)) do (* ;
"Wait until we really have the TTY before proceeding.")
(DISMISS 250))
(RESETLST
(RESETSAVE (\TEDIT.COMMAND.RESET.SETUP (LIST TEXTOBJ WINDOW)
T))
(PROG (CH FN TCH (DIRTY NIL)
(BLANKSEEN NIL)
INSCH#
(CRSEEN NIL)
TLEN CHNO (READSA (fetch READSA of %#CURRENTRDTBL#))
(TERMSA (OR (fetch TXTTERMSA of TEXTOBJ)
\PRIMTERMSA))
(TEDITSA (fetch READSA of RTBL))
(TEDITFNHASH (fetch READMACRODEFS of RTBL))
(LOOPFN (TEXTPROP TEXTOBJ 'LOOPFN))
(CHARFN (TEXTPROP TEXTOBJ 'CHARFN))
COMMANDFN)
(while (NOT (fetch EDITFINISHEDFLG of TEXTOBJ))
do
(ERSETQ (PROGN (\TEDIT.WAITFORSYSBUFP 25 TEXTOBJ)
(* ; "Await type-in or mouse action")
[if (NOT (fetch EDITFINISHEDFLG of TEXTOBJ))
then (while (OR TEDIT.SELPENDING (fetch EDITOPACTIVE
of TEXTOBJ))
do (* ;
"Don't do anything while he's selecting or one of the lock-out ops is active.")
[COND
((EQ TEDIT.SELPENDING TEXTOBJ)
(* ;
"(OR (EQ TEDIT.SELPENDING TEXTOBJ) (fetch TCUP of (fetch CARET of TEXTOBJ)))")
(* ;
"If this TEdit is the one being selected in, or the caret is explicitly visible, flash it")
(* ; "")
(if (TTY.PROCESSP)
then (TEDIT.FLASHCARET (fetch CARET
of TEXTOBJ]
(BLOCK))
(COND
((fetch TXTNEEDSUPDATE of TEXTOBJ)
(* ;
"We got here somehow with the window not in sync with the text. Run an update.")
(\SHOWSEL SEL NIL NIL)
(TEDIT.UPDATE.SCREEN TEXTOBJ NIL T)
(\FIXSEL SEL TEXTOBJ)
(\SHOWSEL SEL NIL T)))
(if (TTY.PROCESSP)
then (TEDIT.FLASHCARET (fetch CARET of TEXTOBJ)))
(* ;
"Flash the caret periodically (BUT not while we're here only to cleanup and quit.)")
(replace EDITOPACTIVE of TEXTOBJ with T)
(* ;
"Before starting to work, note that we're doing something.")
(AND LOOPFN (ERSETQ (APPLY* LOOPFN STREAM)))
(* ;
"If the guy wants control during the loop, give it to him.")
(* ; "Process any pending selections")
[COND
(TEDIT.COPY.PENDING
(* ;
"Have to copy the shifted SEL to caret.")
(SETQ TEDIT.COPY.PENDING NIL)
(\COPYSEL TEDIT.SHIFTEDSELECTION
(fetch SHIFTEDSEL of TEXTOBJ))
(ERSETQ (TEDIT.COPY (fetch SHIFTEDSEL
of TEXTOBJ)
(fetch SEL of TEXTOBJ)))
(replace SET of TEDIT.SHIFTEDSELECTION
with NIL)
(replace L1 of TEDIT.SHIFTEDSELECTION
with NIL)
(replace LN of TEDIT.SHIFTEDSELECTION
with NIL)
(\COPYSEL TEDIT.SHIFTEDSELECTION
(fetch SHIFTEDSEL of TEXTOBJ)))
(TEDIT.COPYLOOKS.PENDING
(* ;
"Have to copy the shifted SEL to caret.")
(SETQ TEDIT.COPYLOOKS.PENDING NIL)
(\COPYSEL TEDIT.COPYLOOKSSELECTION
(fetch SHIFTEDSEL of TEXTOBJ))
[ERSETQ (COND
((EQ 'PARA (fetch SELKIND
of (fetch SHIFTEDSEL
of TEXTOBJ)))
(* ;
"copy the paragraph looks, since the source selection type was paragraph")
(TEDIT.COPY.PARALOOKS TEXTOBJ
(fetch SHIFTEDSEL of TEXTOBJ)
(fetch SEL of TEXTOBJ)))
(T
(* ; "copy the character looks")
(TEDIT.COPY.LOOKS TEXTOBJ
(fetch SHIFTEDSEL of TEXTOBJ)
(fetch SEL of TEXTOBJ]
(\SHOWSEL (fetch SHIFTEDSEL of TEXTOBJ)
NIL NIL)
(replace SET of TEDIT.COPYLOOKSSELECTION with NIL)
(replace L1 of TEDIT.COPYLOOKSSELECTION with NIL)
(replace LN of TEDIT.COPYLOOKSSELECTION with NIL)
(\COPYSEL TEDIT.COPYLOOKSSELECTION
(fetch SHIFTEDSEL of TEXTOBJ)))
(TEDIT.MOVE.PENDING
(* ;
"Have to move the ctrl-shift SEL to caret.")
(SETQ TEDIT.MOVE.PENDING NIL)
(\COPYSEL TEDIT.MOVESELECTION
(fetch MOVESEL of TEXTOBJ))
(TEDIT.DO.BLUEPENDINGDELETE SEL TEXTOBJ)
(ERSETQ (TEDIT.MOVE (fetch MOVESEL of TEXTOBJ)
(fetch SEL of TEXTOBJ)))
(replace SET of TEDIT.MOVESELECTION
with NIL)
(replace L1 of TEDIT.MOVESELECTION with NIL)
(replace LN of TEDIT.MOVESELECTION with NIL)
(\COPYSEL TEDIT.MOVESELECTION
(fetch MOVESEL of TEXTOBJ)))
(TEDIT.DEL.PENDING
(* ; "Delete the current selection.")
(SETQ TEDIT.DEL.PENDING NIL)
(* ;
"Above all, reset the demand flag first")
(ERSETQ (COND
((fetch SET of TEDIT.DELETESELECTION)
(* ;
"Only try the deletion if he really set the selection.")
(\SHOWSEL (fetch DELETESEL of TEXTOBJ)
NIL NIL)
(* ; "Turn off the selection highlights")
(\SHOWSEL (fetch SEL of TEXTOBJ)
NIL NIL)
(replace SET of (fetch DELETESEL
of TEXTOBJ)
with NIL)
(\COPYSEL TEDIT.DELETESELECTION
(fetch SEL of TEXTOBJ))
(\TEDIT.SET.SEL.LOOKS (fetch SEL
of TEXTOBJ)
'NORMAL)
(* ; "Grab the selection we're to use")
(\TEDIT.DELETE (fetch SEL of TEXTOBJ)
(fetch \TEXTOBJ
of (fetch SEL of TEXTOBJ))
NIL)
(replace L1 of TEDIT.DELETESELECTION
with NIL)
(replace LN of TEDIT.DELETESELECTION
with NIL]
(UNINTERRUPTABLY
(replace (STRINGP OFFST) of ISCRSTRING with 0)
(replace (STRINGP LENGTH) of ISCRSTRING with
\SCRATCHLEN
))
(while (\SYSBUFP)
do (* ; "Handle user type-in")
(SETQ CH (\GETKEY))
(COND
(CHARFN (* ;
"Give the OEM user control for each character typed.")
(SETQ TCH (APPLY* CHARFN STREAM CH))
(OR (EQ TCH T)
(SETQ CH TCH))
(* ;
"And let him return one of NIL for 'ignore this char' , T for 'leave it be' or a new charcode.")
))
(SELECTC (AND CH (\SYNCODE TEDITSA CH))
(CHARDELETE.TTC
(* ;
"Backspace handler: Remove the character just before SEL:CH#.")
(\TEDIT.CHARDELETE TEXTOBJ ISCRSTRING SEL)
(TEDIT.RESET.EXTEND.PENDING.DELETE SEL))
(WORDDELETE.TTC
(\TEDIT.WORDDELETE TEXTOBJ)
(TEDIT.RESET.EXTEND.PENDING.DELETE SEL))
(DELETE.TTC
(* ;
"DEL Key handler: Delete the selected characters")
(\TEDIT.DELETE SEL TEXTOBJ)
(TEDIT.RESET.EXTEND.PENDING.DELETE
SEL))
(UNDO.TTC
(* ;
"He hit the CANCEL key, so go UNDO something")
(TEDIT.UNDO TEXTOBJ)
(TEDIT.RESET.EXTEND.PENDING.DELETE
SEL))
(REDO.TTC
(* ;
"He hit the REDO key, so go REDO something")
(TEDIT.REDO TEXTOBJ)
(TEDIT.RESET.EXTEND.PENDING.DELETE
SEL))
(FUNCTIONCALL.TTC
(* ;
"This is a special character -- it calls a function")
(COND
((SETQ FN (GETHASH CH TEDITFNHASH))
(* ;
"There IS a command function to be called.")
(APPLY* FN (fetch STREAMHINT
of TEXTOBJ)
TEXTOBJ SEL)
(* ; "do it")
(\SHOWSEL SEL NIL NIL)
(TEDIT.RESET.EXTEND.PENDING.DELETE
SEL)
(* ;
"After a user function, no more blue-pending-delete")
(\SHOWSEL SEL NIL T)
(* ; "And forget any pending deletion.")
)))
(NEXT.TTC
(* ;
"Move to the next blank to fill in. For now, blanks are delimited by >>...<<")
(TEDIT.NEXT TEXTOBJ))
(EXPAND.TTC
(* ; "EXPAND AN ABBREVIATION")
(\TEDIT.ABBREV.EXPAND (fetch
STREAMHINT
of TEXTOBJ
)))
(SELECTC (AND TERMSA CH (fetch TERMCLASS
of (\SYNCODE TERMSA
CH)))
(CHARDELETE.TC
(* ;
"Backspace handler: Remove the character just before SEL:CH#.")
(\TEDIT.CHARDELETE TEXTOBJ
ISCRSTRING SEL)
(
TEDIT.RESET.EXTEND.PENDING.DELETE
SEL))
(WORDDELETE.TC
(* ; "Back-WORD handler")
(\TEDIT.WORDDELETE TEXTOBJ)
(
TEDIT.RESET.EXTEND.PENDING.DELETE
SEL))
(LINEDELETE.TC
(* ;
"DEL Key handler: Delete the selected characters")
(\TEDIT.DELETE SEL TEXTOBJ)
(
TEDIT.RESET.EXTEND.PENDING.DELETE
SEL))
(COND
(CH
(* ;
"Any other key was hit: Just insert the character.")
(TEDIT.DO.BLUEPENDINGDELETE SEL
TEXTOBJ)
(* ;
"Handle blue pending delete, if there is one.")
(TEDIT.\INSERT CH SEL TEXTOBJ
BLANKSEEN CRSEEN]
(replace EDITOPACTIVE of TEXTOBJ with NIL)))
(replace EDITOPACTIVE of TEXTOBJ with NIL])
(\TEDIT.WAITFORSYSBUFP
[LAMBDA (N TEXTOBJ) (* ; "Edited 13-Jan-88 11:01 by Randy.Gobbel")
(* ;;; "If sysbufp, return T. Else, wait for tty up to n msecs. After awaking, if finished, return nil, else loop around")
(COND
[(FIXP N)
(GLOBALRESOURCE (\DISMISSTIMER)
(PROG ((NOW (\CLOCK0 \DISMISSTIMER)))
LP (* ; "")
(COND
((\SYSBUFP)
(RETURN T))
((NOT (TTY.PROCESSP))
(\WAIT.FOR.TTY N)
(if (fetch (TEXTOBJ EDITFINISHEDFLG) of TEXTOBJ)
then (RETURN)))
((\CLOCKGREATERP NOW N) (* ; "Time's up, return with no input")
(RETURN))
(T (BLOCK)))
(GO LP]
(T (until (\SYSBUFP) do (BLOCK)
(AWAIT.EVENT \TTY.PROCESS.EVENT])
)
(PUTPROPS RGPATCH071 FILETYPE :TCOMPL)
(PUTPROPS RGPATCH071 MAKEFILE-ENVIRONMENT (:PACKAGE "IL" :READTABLE "INTERLISP" :BASE 10))
(PUTPROPS RGPATCH071 COPYRIGHT ("Xerox Corporation" 1988))
(DECLARE%: DONTCOPY
(FILEMAP (NIL (1588 25812 (\TEDIT.COMMAND.LOOP 1598 . 24724) (\TEDIT.WAITFORSYSBUFP 24726 . 25810))))
)
STOP