mirror of https://github.com/A2osX/A2osX.git
165 lines
2.1 KiB
Plaintext
165 lines
2.1 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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*
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*
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*
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*--------------------------------------
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X.STRESC >STYA ZPPtr1 In
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>STYA ZPPtr2 Out
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ldy #0
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.1 lda (ZPPtr1)
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beq .8
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jsr X.STRESC.IncPtr1
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cmp #'\'
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bne .6
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lda (ZPPtr1)
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beq .7
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ldx #X.STRESC.EscCharsCnt-1
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.2 cmp X.STRESC.EscChars,x
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beq .5
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dex
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bpl .2
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stz ZPTmpByte
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jsr X.STRESC.ToUC
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cmp #'X'
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bne .3
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.20 jsr X.STRESC.IncPtr1
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lda (ZPPtr1)
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beq .40
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jsr X.STRESC.IsHex
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bcs .40
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asl ZPTmpByte
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asl ZPTmpByte
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asl ZPTmpByte
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asl ZPTmpByte
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ora ZPTmpByte
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sta ZPTmpByte
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bra .20
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.3 jsr X.STRESC.IsOct
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bcs .40
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jsr X.STRESC.IncPtr1
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asl ZPTmpByte
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asl ZPTmpByte
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asl ZPTmpByte
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ora ZPTmpByte
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sta ZPTmpByte
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lda (ZPPtr1)
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bne .3
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.40 lda ZPTmpByte
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bra .6
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.4 tax
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lda #'\'
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sta (ZPPtr2),y
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iny
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txa
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bra .6
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.5 lda X.STRESC.EscCodes,x
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jsr X.STRESC.IncPtr1
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.6 sta (ZPPtr2),y
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iny
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bra .1
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.7 lda #'\'
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sta (ZPPtr2),y
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iny
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lda #0
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.8 sta (ZPPtr2),y
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>LDYA ZPPtr2
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rts
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*--------------------------------------
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X.STRESC.IncPtr1
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inc ZPPtr1
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bne .8
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inc ZPPtr1+1
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.8 rts
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*--------------------------------------
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X.STRESC.ToUC cmp #'a'
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bcc .8
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cmp #'z'+1
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bcs .8
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eor #$20
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.8 rts
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*--------------------------------------
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X.STRESC.IsOct cmp #'0'
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bcc .9
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cmp #'7'+1
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bcs .9
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and #%00000111
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clc
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rts
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.9 sec
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rts
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*--------------------------------------
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X.STRESC.IsHex cmp #'0'
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bcc .9
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cmp #'9'+1
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bcc .8
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cmp #'A'
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bcc .9
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cmp #'Z'+1
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bcc .7
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cmp #'a'
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bcc .9
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cmp #'z'+1
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bcc .9
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* sec
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sbc #$20
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.7 sec
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sbc #'A'-10
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.8 and #$0F
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clc
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rts
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.9 sec
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rts
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*--------------------------------------
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MAN
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SAVE usr/src/shared/x.stresc.s
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ASM
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