A2osX/BIN/SH.S.CL.txt
2019-02-08 16:13:43 +00:00

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NEW
PREFIX
AUTO 4,1
.LIST OFF
*--------------------------------------
CL.Init >LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPCLBuf
txa
>STA.G CL.hCLBuf
.9 rts
*--------------------------------------
CL.Quit >LDA.G CL.hCLBuf
beq .9
>SYSCALL FreeMem
.9 rts
*--------------------------------------
CL.PrintPrompt >LDYA L.ENV.PS1
>SYSCALL GetEnv
bcs .1
>SYSCALL ExpandStr
bcs .9
phx
pha
>PUSHBI 0
pla
>SYSCALL printf
pla
>SYSCALL FreeMem
.1 >PUSHBI 0
>LDYA L.MSG.PROMPT
>SYSCALL printf
.9 rts
*--------------------------------------
CL.CHARIN tax
>LDA.G bEscMode
beq .13
cpx #'['
beq .9
lda #0
sta (pData),y Y=bEscMode
txa
ldx #EscChars.Cnt-1
.17 cmp EscChars,x
beq .18
dex
bpl .17
clc
rts
.18 txa
asl
tax
jmp (J.ESC,x)
*--------------------------------------
.13 cpx #C.SPACE
bcc CL.CHARIN.CTRL
.1 cpx #C.DEL
bne .2
jmp CL.DEL
.2 jmp CL.Insert
.9 clc
rts
*--------------------------------------
CL.CHARIN.CTRL cpx #C.CR
bne .10
>PUSHBI 0
>LDYA L.MSG.ECHOCRLF
>SYSCALL printf
lda #$ff
>STA.G CL.bReady
clc
rts
.10 cpx #C.ESC
bne .11
lda #$ff
>STA.G bEscMode
clc
rts
.11 cpx #3 Ctrl-C
bne .12
jmp CL.CLR
.12 cpx #24 Ctrl-X
bne .13
jmp CL.SUPPR
.13 clc
rts
*--------------------------------------
CL.Insert >LDA.G CL.Len
inc
beq .9 Buffer full, discard...
sta (pData),y
pha
.1 ply
dey
lda (ZPCLBuf),y Move from Ptr To end of buffer forward...
iny
sta (ZPCLBuf),y
dey
phy
tya
>CMP.G CL.Ptr
bne .1
ply Y=CL.Ptr
* >LDA.G CL.Ptr
txa
sta (ZPCLBuf),y
>LDA.G bREAD.S
bpl .2
ldx #'*'
.2 txa
>SYSCALL PutChar
>INC.G CL.Ptr
jmp CL.PrintEOL
.9 clc
rts
*--------------------------------------
CL.CLR lda (ZPCLBuf)
beq CL.RESET.1
.1 >LDA.G CL.Ptr
>CMP.G CL.Len
beq .2
inc
>STA.G CL.Ptr
lda #C.FS
>SYSCALL PutChar
bra .1
.2 ldy #0
.3 lda #C.DEL
sta (ZPCLBuf),y
iny
lda (ZPCLBuf),y
bne .3
jsr CL.PrintCLBuf
*--------------------------------------
CL.RESET lda #0
sta (ZPCLBuf)
CL.RESET.1 >STA.G CL.bReady
>STA.G CL.Ptr
>STA.G CL.Len
rts
*--------------------------------------
CL.BS >LDA.G CL.Ptr
beq .9
dec
sta (pData),y
lda #C.BS
>SYSCALL PutChar
.9 rts
*--------------------------------------
CL.NAK >LDA.G CL.Ptr
>CMP.G CL.Len
beq .9
inc
>STA.G CL.Ptr
lda #C.FS
>SYSCALL PutChar
.9 rts
*--------------------------------------
* Erase char UNDER cursor
*--------------------------------------
CL.SUPPR >LDA.G CL.Len
beq CL.PrintEOL.8
>LDA.G CL.Ptr
>CMP.G CL.Len
beq CL.PrintEOL.8
bra CL.DEL.1
*--------------------------------------
* Erase char BEFORE cursor
*--------------------------------------
CL.DEL >LDA.G CL.Len
beq CL.PrintEOL.8
>LDA.G CL.Ptr
beq CL.PrintEOL.8
lda #C.BS
>SYSCALL PutChar
>DEC.G CL.Ptr
CL.DEL.1 pha
.1 ply
iny
lda (ZPCLBuf),y
dey
sta (ZPCLBuf),y
iny
phy
tya
>CMP.G CL.Len
bne .1
pla
>DEC.G CL.Len
*--------------------------------------
CL.PrintEOL >LDA.G CL.Ptr
.1 >CMP.G CL.Len
beq .2
pha
tay
lda (ZPCLBuf),y
>SYSCALL PutChar
pla
inc
bra .1
.2 lda #' '
>SYSCALL PutChar
>LDA.G CL.Ptr
.3 >CMP.G CL.Len
beq .4
pha
lda #C.BS
>SYSCALL PutChar
pla
inc
bra .3
.4 lda #C.BS
>SYSCALL PutChar
CL.PrintEOL.8 clc
rts
*--------------------------------------
CL.PrintCLBuf >LDYA ZPCLBuf
>PUSHYA
ldy #S.PS.hStdOut
lda (pPs),y
>SYSCALL fputs
rts
*--------------------------------------
MAN
SAVE USR/SRC/BIN/SH.S.CL
LOAD USR/SRC/BIN/SH.S
ASM