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Implemented '@' and '.' to mean curr working dir

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Bobbi Webber-Manners 2021-09-16 21:50:52 -04:00
parent 09375265fd
commit 00abfb3495
3 changed files with 26 additions and 20 deletions
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applecorn.po
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2
mainmem.init.s
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@ -33,7 +33,7 @@ SETPRFX LDA #GPFXCMD
TAX
INX
STX DRVBUF1 ; was $0300
LDA #$2F
LDA #'/'
STA DRVBUF2 ; was $0301
DEC :OPC7
BNE :L1

44
mainmem.path.s
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@ -9,9 +9,10 @@
* Also allows '^' as '^' is illegal character in ProDOS
* Carry set on error, clear otherwise
PREPATH LDX MOSFILE ; Length
BEQ :EXIT ; If zero length
LDA MOSFILE+1 ; 1st char of pathname
CMP #$3A ; ':'
BNE :S1
JMP :EXIT ; If zero length
:S1 LDA MOSFILE+1 ; 1st char of pathname
CMP #':'
BNE :NOTCOLN ; Not colon
CPX #$03 ; Length >= 3?
BCC :ERR ; If not
@ -31,32 +32,37 @@ PREPATH LDX MOSFILE ; Length
CMP #$02 ; Length >= 2
BCC :ERR ; If not
LDA MOSFILE+1 ; 1st char of filename
CMP #$2F ; '/'
CMP #'/'
BNE :ERR
JSR DEL1CHAR ; Delete '/' from MOSFILE
BRA :APPEND
:NOTCOLN JSR GETPREF ; Current pfx -> PREFIX
:REENTER LDA MOSFILE+1 ; First char of dirname
CMP #'.'
BEQ :UPDIR1
CMP #$5E ; '^' char
BEQ :CARET ; If '^'
CMP #$2F ; '/' char - abs path
BEQ :ONEDOT
CMP #'@'
BEQ :CWD
CMP #'^'
BEQ :CARET
CMP #'/' ; Absolute path
BEQ :EXIT ; Nothing to do
BRA :APPEND
:UPDIR1 LDA MOSFILE+2
:ONEDOT JSR DEL1CHAR ; Delete the dot
LDA MOSFILE ; Is there more?
BEQ :APPEND ; Nope - '.' alone
LDA MOSFILE+1
CMP #'/' ; './'
BEQ :CWD2
CMP #'.' ; '..'
BNE :EXIT
JSR DEL1CHAR ; Delete two leading characters
:CARET JSR DEL1CHAR ; Delete '^' from MOSFILE
JSR PARENT ; Parent dir -> MOSFILE
LDA MOSFILE ; Is there more?
BEQ :APPEND ; Only '^'
:CARET JSR PARENT ; Parent dir -> PREFIX
:CWD JSR DEL1CHAR ; Delete first char from MOSFILE
:CWD2 LDA MOSFILE ; Is there more?
BEQ :APPEND ; Nope!
CMP #$02 ; Len at least two?
BCC :ERR ; Nope!
LDA MOSFILE+1 ; What is next char?
CMP #$2F ; Is it slash?
CMP #'/' ; Is it slash?
BNE :ERR ; Nope!
JSR DEL1CHAR ; Delete '/' from MOSFILE
BRA :REENTER ; Go again!
@ -74,7 +80,7 @@ PARENT LDX PREFIX ; Length of string
BEQ :EXIT ; Prefix len zero
DEX ; Ignore trailing '/'
:L1 LDA PREFIX,X
CMP #$2F ; Slash '/'
CMP #'/'
BEQ :FOUND
DEX
CPX #$01
@ -104,7 +110,7 @@ DRV2PFX CLC ; Cy=0 A=00000sss
INC ; Plus '/' at each end
INC
STA PREFIX ; Store length
LDA #$2F ; '/'
LDA #'/'
STA PREFIX+1
STA PREFIX+2,X
:L1 CPX #$00 ; Copy -> PREFIX
@ -154,7 +160,7 @@ DIGCONV LDY #$01 ; First char
CPY #$01 ; First char?
BEQ :INS ; First char is digit
LDA MOSFILE-1,Y ; Prev char
CMP #$2F ; Slash
CMP #'/'
BEQ :INS ; Slash followed by digit
BRA :NOINS ; Otherwise leave it alone
:INS LDA #'N' ; Char to insert