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2e0ebb5392
removed the need for p-string routines, so they were removed. Also removed alloc256/free256 and associated data structures. In removing calls, found instances in pwd & prefix commands and prompt handler where current directory name was assumed to be < 256 characters; recoded to use a flexible buffer size. Updated and expanded mmdebug.asm routines that perform error checking on memory management calls. Added macros ~NEW and ~DISPOSE that invoke either the real or debug routines. Fixed call to read $TERM variable's length to fix PR#81. Removed echo of data when setting value of $< in expandvars (expand.asm). The characters are echoed as they are typed and do not need to be reprinted on stdout after carriage-return is typed. Added error checking to the various flavors of prefix (just like cd): - Verify 2nd parameter is a valid directory before setting. - Verify 1st parameter < 32 before displaying or setting.
536 lines
8.8 KiB
NASM
536 lines
8.8 KiB
NASM
**************************************************************************
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*
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* The GNO Shell Project
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*
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* Developed by:
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* Jawaid Bazyar
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* Tim Meekins
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*
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* $Id: term.asm,v 1.5 1998/08/03 17:30:25 tribby Exp $
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*
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**************************************************************************
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*
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* TERM.ASM
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* By Tim Meekins
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* Modified by Dave Tribby for GNO 2.0.6
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*
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* Routines for dealing with Termcap under gsh.
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*
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* Note: text set up for tabs at col 16, 22, 41, 49, 57, 65
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* | | | | | |
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* ^ ^ ^ ^ ^ ^
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**************************************************************************
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mcopy /obj/gno/bin/gsh/term.mac
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dummyterm start ; ends up in .root
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end
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setcom 60
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TIOCGETP gequ $40067408
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**************************************************************************
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*
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* Initialize the system for termcap - checks to see if $TERM exists
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* and is set, if not, sets to GNOCON; and allocate termcap buffers.
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*
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**************************************************************************
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InitTerm START
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using termdata
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;
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; See if $TERM exists
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;
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ReadVariableGS ReadVarPB
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lda term_len Get length of $TERM
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bne allocate If 0,
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SetGS SetPB set to default ("gnocon")
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allocate anop Allocate termcap buffers.
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ph4 #1024
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~NEW
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sta bp
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stx bp+2
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ph4 #1024
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~NEW
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sta areabuf
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stx areabuf+2
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rts Return to caller.
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;
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; Parameter block for shell ReadVariableGS call (p 423 in ORCA/M manual)
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;
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ReadVarPB anop
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dc i2'3' pCount
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dc i4'term' Name (pointer to GS/OS string)
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dc i4'dummyresult' GS/OS Output buffer ptr
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ds 2 export flag
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;
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; GS/OS result buffer for getting length of TERM env var.
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;
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dummyresult dc i2'5' Only five bytes total.
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term_len ds 2 Value's length returned here.
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ds 1 Only 1 byte for value.
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;
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; Parameter block for shell SetGS calls (p 427 in ORCA/M manual)
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;
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SetPB anop
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dc i2'3' pCount
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dc i4'term' Name (pointer to GS/OS string)
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dc i4'gnocon' Value (pointer to GS/OS string)
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dc i2'1' Export flag
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term gsstr 'term'
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gnocon gsstr 'gnocon'
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END
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**************************************************************************
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*
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* read new temcap information
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*
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**************************************************************************
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readterm START
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using termdata
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backward_char equ 3
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forward_char equ 4
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up_history equ 5
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down_history equ 6
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lda #1
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sta didReadTerm
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ph4 #termname
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jsl getenv
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phx Push allocated buffer on stack
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pha for later call to nullfree.
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clc Add 4 to GS/OS result buffer
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adc #4 to get pointer to text.
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bcc val_addr_set
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inx
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val_addr_set sta hold_term_val
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stx hold_term_val+2
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tgetent (bp,@xa) ;xa is pushed first
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beq noentry
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dec a
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beq ok
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jsl nullfree Free buffer allocated by getenv.
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stz termok
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ldx #^error1
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lda #error1
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jmp errputs
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noentry anop
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stz termok
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ldx #^error2
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lda #error2 Print error message:
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jsr errputs 'Termcap entry not found for '
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lda hold_term_val Get text from buffer allocated
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ldx hold_term_val+2 by getenv
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jsr errputs and print it.
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jsl nullfree Free buffer allocated by getenv.
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lda #13
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jmp errputchar
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ok jsl nullfree Free buffer allocated by getenv.
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lda #1
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sta termok
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mv4 areabuf,area
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tgetstr (#isid,#area)
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jsr puts
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tgetstr (#leid,#area)
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sta lecap
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stx lecap+2
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tgetstr (#ndid,#area)
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sta ndcap
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stx ndcap+2
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tgetstr (#veid,#area)
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sta vecap
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stx vecap+2
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tgetstr (#viid,#area)
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sta vicap
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stx vicap+2
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tgetstr (#vsid,#area)
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sta vscap
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stx vscap+2
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tgetstr (#blid,#area)
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sta blcap
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stx blcap+2
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tgetstr (#clid,#area)
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sta clcap
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stx clcap+2
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tgetstr (#soid,#area)
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sta socap
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stx socap+2
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tgetstr (#seid,#area)
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sta secap
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stx secap+2
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tgetstr (#cdid,#area)
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sta cdcap
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stx cdcap+2
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tgetstr (#ueid,#area)
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sta uecap
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stx uecap+2
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tgetstr (#usid,#area)
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sta uscap
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stx uscap+2
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tgetstr (#klid,#area)
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phx
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pha
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ph2 #backward_char
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jsl bindkeyfunc
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tgetstr (#krid,#area)
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phx
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pha
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ph2 #forward_char
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jsl bindkeyfunc
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tgetstr (#kuid,#area)
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phx
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pha
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ph2 #up_history
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jsl bindkeyfunc
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tgetstr (#kdid,#area)
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phx
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pha
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ph2 #down_history
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jsl bindkeyfunc
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; the following is VERY important. It doesn't seem so, but I actually tested
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; a terminal that dropped characters w/o it.
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ioctl (#1,#TIOCGETP,#sgtty)
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lda sg_ospeed ;let termcap know our speed
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case on
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sta >ospeed
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case off
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rts
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termname gsstr 'term'
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error1 dc c'Error reading termcap file!',h'0d0d00'
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error2 dc c'Termcap entry not found for ',h'00'
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isid dc c'is',h'00'
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leid dc c'le',h'00'
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ndid dc c'nd',h'00'
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veid dc c've',h'00'
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viid dc c'vi',h'00'
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vsid dc c'vs',h'00'
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blid dc c'bl',h'00'
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clid dc c'cl',h'00'
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soid dc c'so',h'00'
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seid dc c'se',h'00'
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klid dc c'kl',h'00'
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krid dc c'kr',h'00'
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kuid dc c'ku',h'00'
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kdid dc c'kd',h'00'
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cdid dc c'cd',h'00'
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ueid dc c'ue',h'00'
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usid dc c'us',h'00'
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sgtty anop
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dc i1'0'
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sg_ospeed dc i1'0'
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dc i1'0'
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dc i1'0'
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sg_flags dc i2'0'
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; Hold the address of the value of $TERM
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hold_term_val ds 4
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END
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**************************************************************************
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*
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* outc for outputting characters by termcap
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*
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**************************************************************************
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outc START
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space equ 0
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subroutine (2:char),space
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lda char
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jsr putchar
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return
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END
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**************************************************************************
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*
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* move left x characters
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*
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**************************************************************************
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moveleft START
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using termdata
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lda termok
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beq done
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loop dex
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bmi done
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phx
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tputs (lecap,#0,#outc)
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plx
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bra loop
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done rts
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END
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**************************************************************************
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*
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* move right x characters
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*
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**************************************************************************
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moveright START
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using termdata
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lda termok
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beq done
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loop dex
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bmi done
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phx
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tputs (ndcap,#0,#outc)
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plx
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bra loop
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done rts
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END
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**************************************************************************
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*
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* cursor off
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*
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**************************************************************************
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cursoroff START
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using termdata
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lda termok
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beq done
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lda vicap
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ldx vicap+2
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jmp puts
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done rts
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END
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**************************************************************************
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*
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* cursor on
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*
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**************************************************************************
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cursoron START
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using termdata
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lda termok
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beq done
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lda insertflag
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beq dovs
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lda vecap
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ldx vecap+2
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jmp puts
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dovs lda vscap
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ldx vscap+2
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jmp puts
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done rts
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END
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**************************************************************************
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*
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* Beep the bell if it's ok.
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*
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**************************************************************************
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beep START
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using vardata
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using termdata
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lda varnobeep
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bne beepdone
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lda termok
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beq beepdone
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tputs (blcap,#0,#outc)
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beepdone rts
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END
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**************************************************************************
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*
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* clear the screen
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*
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**************************************************************************
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clearscrn START
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using termdata
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lda termok
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beq done
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tputs (clcap,#0,#outc)
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done rts
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END
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**************************************************************************
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*
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* begin standout mode
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*
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**************************************************************************
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standout START
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using termdata
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lda termok
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beq done
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tputs (socap,#0,#outc)
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done rts
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END
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**************************************************************************
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*
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* end standout mode
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*
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**************************************************************************
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standend START
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using termdata
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lda termok
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beq done
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tputs (secap,#0,#outc)
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done rts
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END
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**************************************************************************
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*
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* begin underline mode
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*
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**************************************************************************
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underline START
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using termdata
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lda termok
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beq done
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tputs (uscap,#0,#outc)
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done rts
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END
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**************************************************************************
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*
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* end underline mode
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*
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**************************************************************************
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underend START
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using termdata
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lda termok
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beq done
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tputs (uecap,#0,#outc)
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done rts
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END
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**************************************************************************
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*
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* TSET: builtin command
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* syntax: tset
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*
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* reset the termcap for gsh
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*
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**************************************************************************
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tset START
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using global
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space equ 0
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subroutine (4:argv,2:argc),space
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jsr readterm
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return
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END
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**************************************************************************
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*
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* termcap data
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*
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**************************************************************************
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termdata DATA
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didReadTerm dc i2'0'
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termok dc i2'0'
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insertflag dc i2'1'
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bp ds 4
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areabuf ds 4
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area ds 4
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blcap ds 4
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cdcap ds 4
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clcap ds 4
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lecap ds 4
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ndcap ds 4
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secap ds 4
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socap ds 4
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uecap ds 4
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uscap ds 4
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vecap ds 4
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vicap ds 4
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vscap ds 4
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END
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