mirror of
https://github.com/A2osX/A2osX.git
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532 lines
10 KiB
Plaintext
532 lines
10 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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* https://www.cise.ufl.edu/~cop4600/cgi-bin/lxr/http/source.cgi/lib/ansi/gmtime.c
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*--------------------------------------
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SECSDAY .EQ 86400 60*60*24
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CENTURY0 .EQ 19
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YEAR0 .EQ 70
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DAY0 .EQ 4 day 0 was a thursday
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*--------------------------------------
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.DUMMY
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.OR ZPTMP
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TIME.DWORD .BS 4
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TIME.Century .BS 1
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TIME.Year .BS 1
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.ED
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*/--------------------------------------
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* # Time
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* Get System Time in Buffer
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* ## C
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* `time_t time (S.TIME* timer);`
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* ## ASM
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* `>LDYA timer`
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* `>SYSCALL time`
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* ## RETURN VALUE
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* S.TIME filled with System date/time
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*\--------------------------------------
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K.Time >PUSHYA
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>MLICALL MLIGETTIME
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>LDYAI DATELO
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*/--------------------------------------
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* # PTime2Time
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* Convert ProDOS Time To S.TIME
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* ## C
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* `int PTime2Time (long* ptime, S.TIME* timer);`
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* ## ASM
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* `>PUSHW timer`
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* `>LDYA ptime`
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* `>SYSCALL PTime2Time`
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* ## RETURN VALUE
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*\--------------------------------------
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K.PTime2Time jsr MEM.SPtr1PPtr2
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TIME.PTime2TimeP1P2
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ldy #1
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lda (ZPPtr1),y Get Year
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lsr C is high bit of month
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ldy #S.Time.YEAR
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sta (ZPPtr2),y set year
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sta TIME.Year for conputing Century/WDAY later
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lda (ZPPtr1) Get Month/day
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pha save Day
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ror
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lsr
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lsr
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lsr
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lsr
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ldy #S.Time.MONTH
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sta (ZPPtr2),y set month
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pla get back day
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and #$1F
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iny
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sta (ZPPtr2),y set day
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lda TIME.Year get back year
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cmp #69 if before 70 CC,if > 70, CS
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lda #0
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rol get back C in bit 0
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eor #1 toggle C
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adc #19 set date before 1970 -> 20xx
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sta (ZPPtr2) set Century
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sta TIME.Century for conputing WDAY later
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ldy #2
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lda (ZPPtr1),y Get Min
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tax
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iny
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lda (ZPPtr1),y Get Hour
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ldy #S.Time.HOUR
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sta (ZPPtr2),y set hour
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iny
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txa
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sta (ZPPtr2),y set min
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iny
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lda #0
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sta (ZPPtr2),y set seconds (ProDOS does not provide it)
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* 1/1/1970 was Thursday...if not leap, add one, if leap add 2
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K.ComputeWDAY lda #DAY0-1 Thursday : 4 (-1 for mod 7)
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pha
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lda #19
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sta TIME.DWORD
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lda #70
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sta TIME.DWORD+1
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.1 ldy TIME.DWORD
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lda TIME.DWORD+1
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cpy TIME.Century
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bne .2
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cmp TIME.Year
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beq .4
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.2 jsr TIME.IsLeapYearYA CS = Leap
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pla
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adc #1
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cmp #7
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bcc .3
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sbc #7 MOD 7
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.3 pha
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inc TIME.DWORD+1
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lda TIME.DWORD+1
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cmp #100
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bne .1
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lda #0
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sta TIME.DWORD+1
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inc TIME.DWORD
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bra .1
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.4 ldy #S.Time.MONTH
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lda (ZPPtr2),y get month
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tax
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.5 lda K.StrFTime.MDAY-1,x get day count in this month
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bne .6 february ?
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ldy TIME.Century
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lda TIME.Year
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jsr TIME.IsLeapYearYA CS = Leap
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.6 pla
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adc K.StrFTime.MDAY-1,x
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cmp #7
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bcc .7
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sbc #7
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.7 pha
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dex
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bne .5
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pla
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ldy #S.Time.DAY
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adc (ZPPtr2),y get day in month (1..31)
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dec adjust range 0.30 for MOD 7
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.8 cmp #7 MOD 7
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bcc .80
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sbc #7
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bra .8
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.80 inc adjust range 1..7
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ldy #S.Time.WDAY
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sta (ZPPtr2),y
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clc
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rts
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*/--------------------------------------
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* # CTime2Time
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* Convert CTime Time To S.TIME
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* ## C
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* `int CTime2Time (long* ctime, S.TIME* timer);`
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* ## ASM
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* `>PUSHW timer`
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* `>LDYA ctime`
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* `>SYSCALL CTime2Time`
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* ## RETURN VALUE
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*\--------------------------------------
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K.CTime2Time jsr MEM.SPtr1PPtr2
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ldy #3
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.1 lda (ZPPtr1),y
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sta ARG32,y ARG = ctime
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dey
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bpl .1
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lda #SECSDAY ACC = SECSDAY
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sta ACC32
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lda /SECSDAY
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sta ACC32+1
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lda ^SECSDAY
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sta ACC32+2
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stz ACC32+3
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jsr MATH.DIVMOD32 ARG32 = Days, TMP32 = remaining secs
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lda ARG32 WDAY computation : (ARG32 + DAY0) mod 7
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clc
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adc #DAY0
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pha
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lda ARG32+1 65535 days = 179 years
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adc /DAY0
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eor #$ff
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tax
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pla
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.2 tay
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sec
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sbc #7
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bcs .2
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inx
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bne .2
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tya
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ldy #S.Time.WDAY
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sta (ZPPtr2),y
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lda #CENTURY0
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sta TIME.Century
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lda #YEAR0
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sta TIME.Year
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K.CTime2Time.Year
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.1 ldy TIME.Century
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lda TIME.Year
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jsr TIME.IsLeapYearYA if Leap year CS
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lda #0 Toggle Carry
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rol
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eor #1
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lsr
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lda ARG32
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sbc #365
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pha
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lda ARG32+1
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sbc /365
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bcc .2
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sta ARG32+1
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pla
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sta ARG32
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inc TIME.Year
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lda TIME.Year
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cmp #100
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bne .1
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stz TIME.Year
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inc TIME.Century
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bne .1
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.2 pla
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lda TIME.Century
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* ldy #S.Time.CENTURY
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sta (ZPPtr2)
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ldy #S.Time.YEAR
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lda TIME.Year
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sta (ZPPtr2),y
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K.CTime2Time.HMS
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ldx #3
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.1 lda TMP32,x
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sta ARG32,x
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dex
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bpl .1
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ldy #S.TIME.SECOND
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jsr .2
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dey #S.TIME.MINUTE
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jsr .2
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dey #S.TIME.HOUR
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lda ARG32
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sta (ZPPtr2),y
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clc
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rts
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.2 phy
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lda #60
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jsr MATH.A2ACC32
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jsr MATH.DIVMOD32
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ply
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lda TMP32
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sta (ZPPtr2),y
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rts
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*--------------------------------------
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* In :
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* Y = Century
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* A = Year (0..99)
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* if (year mod 400 = 0)
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* or
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* if not (year mod 100 = 0) and (year mod 4 = 0)
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* Out :
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* CS = Leap
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* CC = Not Leap
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*--------------------------------------
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TIME.IsLeapYearYA
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cmp #0 Year = 00 ?
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bne .1 no
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tya year = 00, get century in a
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and #$3 mod 4 = 0 ?
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beq .9 leap year
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.8 clc not leap
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rts
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.1 and #$3 mod 4 = 0 ?
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bne .8
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.9 sec Leap
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rts
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*--------------------------------------
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K.StrFTime.MDAY .DA #3,#0,#3,#2,#3,#2,#3,#3,#2,#3,#2,#3
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*/--------------------------------------
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* # StrFTime
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* ## C
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* Convert S.TIME struct to CSTR
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* `void strftime (char* ptr, const char* format, const struct S.TIME* timeptr );`
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* ## ASM
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* `PUSHW timeptr`
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* `PUSHW format`
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* + %a : Abbreviated weekday name : Thu
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* + %A : Full weekday name : Thursday
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* + %b : Abbreviated month name : Aug
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* + %B : Full month name : August
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* + %d : Day of the month, zero-padded (01-31)
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* + %H : Hour in 24h format (00-23) 14
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* + %I : Hour in 12h format (01-12) 02
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* + %m : Month as a decimal number (01-12) 08
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* + %M : Minute (00-59) 55
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* + %p : AM or PM designation PM
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* + %S : Second (00-61) 02
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* + %w : Weekday as a decimal number with Sunday as 0 (0-6)
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* + %y : Year, last two digits (00-99)
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* + %Y : Year four digits 2001
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* `>LDYA ptr`
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* `>SYSCALL strftime`
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* ## RETURN VALUE
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* none. always succeed.
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*\--------------------------------------
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K.StrFTime jsr MEM.SPtr1PPtr2
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>PULLW ZPPtr3 timeptr
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.1 lda (ZPPtr2)
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beq .8
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jsr MEM.NextCharPtr2
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cmp #'%'
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beq .2
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jsr MEM.PutCharPtr1
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bra .1
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.2 ldx #K.StrFTime.JMP-K.StrFTime.Tbl-1
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lda (ZPPtr2)
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beq .8
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jsr MEM.NextCharPtr2
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.3 cmp K.StrFTime.Tbl,x
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beq .4
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dex
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bpl .3
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bra .1
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.4 txa
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asl
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tax
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jsr .5
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bra .1
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.5 jmp (K.StrFTime.JMP,x)
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.8 lda #0 Terminate C string
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sta (ZPPtr1)
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clc
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rts
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*--------------------------------------
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K.StrFTime.TBL .AS "aAbBdHImMpSwyY"
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K.StrFTime.JMP .DA K.StrFTime.A
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.DA K.StrFTime.AA
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.DA K.StrFTime.B
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.DA K.StrFTime.BB
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.DA K.StrFTime.D
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.DA K.StrFTime.HH
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.DA K.StrFTime.II
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.DA K.StrFTime.M
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.DA K.StrFTime.MM
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.DA K.StrFTime.P
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.DA K.StrFTime.SS
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.DA K.StrFTime.W
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.DA K.StrFTime.Y
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.DA K.StrFTime.YY
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*--------------------------------------
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K.StrFTime.A ldx #3 Short day of week, 3 chars...
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.HS 2C Bit abs
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K.StrFTime.AA ldx #15 full DoW
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>LDYAI K.StrFTime.DAY
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>STYA ZPPtr4
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ldy #S.Time.WDAY
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bra K.StrFTime.STR
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K.StrFTime.B ldx #3 Short Month, 3 chars....
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.HS 2C Bit abs
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K.StrFTime.BB ldx #15 full Month....
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>LDYAI K.StrFTime.MON
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>STYA ZPPtr4
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ldy #S.Time.MONTH
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K.StrFTime.STR lda (ZPPtr3),y get required S.Time field value
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tay
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beq .9 Illegal value
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.1 dey range 0..x
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beq .2
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lda (ZPPtr4)
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sec
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adc ZPPtr4
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sta ZPPtr4
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bcc .1
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inc ZPPtr4+1
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bra .1
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.2
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* ldy #0 Y is already 0
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.3 iny
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lda (ZPPtr4),y
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jsr MEM.PutCharPtr1
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tya
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cmp (ZPPtr4)
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beq .8
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dex
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bne .3
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.8 rts
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.9 ldx #3
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lda #'?'
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.99 jsr MEM.PutCharPtr1
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dex
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bne .99
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rts
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*--------------------------------------
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K.StrFTime.II ldy #S.Time.HOUR
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lda (ZPPtr3),y
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cmp #12
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bcc K.StrFTime.addDecA
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sbc #12
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bra K.StrFTime.addDecA
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K.StrFTime.P ldy #S.Time.HOUR
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lda (ZPPtr3),y
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cmp #12
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bcc .1
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lda #'p'
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.HS 2C bit abs
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.1 lda #'a'
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jsr MEM.PutCharPtr1
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lda #'m'
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jmp MEM.PutCharPtr1
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K.StrFTime.YY ldy #S.Time.CENTURY
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jsr K.StrFTime.addDecPtr1Y
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K.StrFTime.Y ldy #S.Time.YEAR
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.HS 2C bit abs
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K.StrFTime.D ldy #S.Time.DAY
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.HS 2C bit abs
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K.StrFTime.HH ldy #S.Time.HOUR
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.HS 2C bit abs
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K.StrFTime.SS ldy #S.Time.SECOND
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.HS 2C bit abs
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K.StrFTime.W ldy #S.Time.WDAY
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.HS 2C bit abs
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K.StrFTime.M ldy #S.Time.MONTH
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.HS 2C bit abs
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K.StrFTime.MM ldy #S.Time.MINUTE
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*--------------------------------------
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K.StrFTime.addDecPtr1Y
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lda (ZPPtr3),y
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K.StrFTime.addDecA
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ldx #2
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ldy #'0'
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clc
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jsr MATH.A2STR10
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lda A2osX.NumStrBuf
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jsr MEM.PutCharPtr1
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lda A2osX.NumStrBuf+1
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jmp MEM.PutCharPtr1
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*--------------------------------------
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K.StrFTime.DAY >PSTR "Monday"
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>PSTR "Tuesday"
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>PSTR "Wednesday"
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>PSTR "Thursday"
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>PSTR "Friday"
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>PSTR "Saturday"
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>PSTR "Sunday"
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*--------------------------------------
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K.StrFTime.MON >PSTR "January"
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>PSTR "February"
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>PSTR "March"
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>PSTR "April"
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>PSTR "May"
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>PSTR "June"
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>PSTR "July"
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>PSTR "August"
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>PSTR "September"
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>PSTR "October"
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>PSTR "November"
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>PSTR "December"
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*--------------------------------------
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MAN
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SAVE USR/SRC/SYS/KERNEL.S.TIME
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LOAD USR/SRC/SYS/KERNEL.S
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ASM
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