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https://github.com/A2osX/A2osX.git
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121 lines
2.2 KiB
Plaintext
121 lines
2.2 KiB
Plaintext
NEW
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PREFIX
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AUTO 4,1
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*/--------------------------------------
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* # Args2ArgV
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* Expand String and convert to ArgV List
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* ## C
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* short int args2argv(char* args, char* argv[])
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* ## ASM
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* `>PUSHW argv`
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* `>LDYA args`
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* `>SYSCALL Args2ArgV
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* ## RETURN VALUE
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* A = Arg count
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*\--------------------------------------
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ARG.bInQuote .EQ ZPPtr3
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*--------------------------------------
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K.Args2ArgV jsr K.ExpandStr
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bcs .9
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>STYA ZPPtr1
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stx .80+1
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>PULLW ZPPtr2 Get target buffer
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ldx #0 Arg Count
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stz ARG.bInQuote
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.1 jsr MEM.GetCharPtr1
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beq .8
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cmp #C.SPACE
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beq .1 skip leading spaces
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.2 cmp #'"' found a quote ?
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bne .3
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lda ARG.bInQuote
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eor #$ff
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sta ARG.bInQuote
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bra .7 skip quote and check next char
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.3 cmp #C.SPACE
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bne .6 regular char ...store...
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bit ARG.bInQuote
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bmi .6 between quotes... store space...
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inx Found one arg !!!
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lda #0 set this token End
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jsr MEM.PutCharPtr2
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bra .1
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.6 jsr MEM.PutCharPtr2
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.7 jsr MEM.GetCharPtr1
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bne .2
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inx
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.8 jsr MEM.PutCharPtr2 set Argv[x] Ending 0
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sta (ZPPtr2) set Array Ending 0
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phx
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.80 lda #$FF SELF MODIFIED
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jsr K.FreeMem Discard expanded string
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pla get back Arg Count
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* clc
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rts
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.9 >RET 2 Discard target buffer
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*/--------------------------------------
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* # ArgV
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* ## ASM
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* **In:**
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* A = argument index.
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* ## RETURN VALUE
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* CC : success
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* Y,A = PTR To Arg[A]
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* CS : Out Of Bound
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*\--------------------------------------
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K.ArgV tax save requested arg#
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ldy #S.PS.hARGV
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lda (pPs),y
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jsr K.GetMemPtr
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>STYA ZPPtr1
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.1 lda (ZPPtr1) end of ARGV[] ?
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beq .9 yes, not found....
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dex
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bmi .7
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.3 jsr MEM.GetCharPtr1 skip str
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bne .3
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jsr MEM.NextCharPtr1 skip \0
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bra .1
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.7 >LDYA ZPPtr1
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.8 clc
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rts
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.9 lda #E.OOB
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sec
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rts
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*--------------------------------------
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MAN
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SAVE USR/SRC/SYS/KERNEL.S.ARG
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LOAD USR/SRC/SYS/KERNEL.S
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ASM
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