A2osX/_Docs/KERNEL.md

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#GetArgC
Returns argument count in the process command line.

##In:
+ none.

##Out: 
+ A = Command line Arg Count (Including /path/cmd)

#GetArgA

##In:
+ A = argument index.

##Out: 
+ CC : success
 + Y,A = PStr To Arg[A]
+ CS : Out Of Bound

#SScanF
Scan a PStr (in progress)

##In:
+ PUSHW PTR to target buffer
+ PUSHW PSTR pattern	(ex: "%d.%d.%d.%d")
 + %d : byte
+ PUSHW PSTR to scan (ex: "192.168.1.5")

##Out:

#PrintFYA
Prints C-Style String

##In:
+ Y,A = PTR to CStr
 + %a : pull 2 bytes to Print Access right String 'drwxrwxrwx'
 + %b : pull 1 byte to Print BIN 
 + %B : pull 2 bytes to Print BIN
 + %d : pull 1 byte unsigned DEC 0..255
 + %D : pull 2 bytes unsigned DEC 0..65535
 + %u : pull 2 bytes PTR to 4 bytes long unsigned DEC 0..4294967295
 + %e : pull 2 bytes PTR to 6 Bytes Real +1.23456789e+12
 + %f : pull 2 bytes PTR to 6 Bytes Real 3.1415
 + %h : pull 1 byte to Print HEX
 + %H : pull 2 bytes to Print HEX
 + %i : pull 1 byte to Print signed DEC -128..127
 + %I : pull 2 bytes to Print signed DEC -32768..32767
 + %L : pull 2 bytes PTR to 4 bytes signed DEC -2147483648..2147483647
 + %n : pull 1 byte to Print low Nibble HEX
 + %N : pull 1 byte to Print high Nibble HEX
 + %s : pull 2 bytes ptr to C-Style String
 + %S : pull 2 bytes ptr to P-Style String
 + \e : Print 'ESC' ($1B,27)
 + \n : Print CR=13
 + \\ : Print \
 + \% : Print %
+ Modifiers for len and padding : 
 + %d	  : '9'  '12'
 + %2d	  : ' 9' '12'   				
 + %02d  : '09' '12'
 + %11s  : 'ABCDEFGH   '	
 + %011s : 'ABCDEFGH000'
 + %2f	  :	'3.14'

##Out:
+ CC : success
+ CS : I/O error from COut

#GetDevByIDA

##IN: 
+ A = DevID

##OUT:
+ CC = OK, CS = ERROR
+ Y,A = devslot
+ note: X Unmodified

#GetDevIDByNameYA

##IN: 
+ Y,A = Ptr to device name (PStr)

##OUT:
+ CC = OK, CS = ERROR
+ X = DEVID
+ Y,A = pDev

#GetDevInfoA

##IN: 
+ A = DevID

##OUT:
+ CC = OK, CS = ERROR
+ Y,A = Ptr to S.DEVINFO

#OpenDirYA

##In:
+ Y,A = PATH (PSTR)

##Out: 
+ CC : success
 + A = hDIR
+ CS : error
 + A = EC

#ReadDirA

##In: 
+ A = hDIR

##Out: 
+ CC : success
 + X = hDIRENT
 + Y,A = PTR to S.DIRENT
+ CS : error
 + A = EC
 + note : A = 0 means no more entry

#CloseDirA

##In: 
+ A = hDIR

##Out:
+ none, always succeed. 

#MKDirYA

##In: 
+ Y,A = DIR name

##Out:
+ CC : success
+ CS : error
 + A = EC

#ExpandPStrYA

##In:
+ Y,A = PTR to String to Expand (PSTR)

##Out:
+ X = hMem to Expanded String (PSTR)
+ Y,A = PTR to Expanded String 

#PutEnvYA

##In:
+ Y,A = PTR to String NAME=VALUE (PSTR)

##Out:

#SetEnv

##In:
+ PUSHW = PTR To Value (PSTR)
+ PUSHW = PTR To Name (PSTR)

##Out:

#GetEnvYA

##In:
+ Y,A = PTR to NAME (PSTR)

##Out:
+ CC : Y,A = PTR to VALUE (PSTR)
+ CS : not found
*--------------------------------------
K.GetEnvYA		>STYA ZPQuickPtr2
jsr ENV.CheckSysVarPtr2
bcc .9
jsr ENV.FindVarPtr2
bcs .9
jsr ENV.NextEnvPtr1		Skip NAME
>LDYA ZPQuickPtr1
clc						just in case ADC in NextEnvPtr1 disturb CC
rts
.9				>LDYAI EmptyPSTR
rts

#UnsetEnvYA

##In:
+ Y,A = PTR To Name (PSTR)

##Out:

#FOpen
Open a file

##In :
+ PUSHW = AUXTYPE
+ PUSHB = TYPE
+ PUSHB = MODE
 + SYS.FOPEN.R : if R and exists -> ERROR
 + SYS.FOPEN.W : if W and exists -> CREATE
 + SYS.FOPEN.A : Append
 + SYS.FOPEN.T : Open/Append in Text mode
 + SYS.FOPEN.X : Create if not exists
+ PUSHW = PATH (PSTR)

##Out : 
+ CC : A = hFILE
+ CS : A = EC

#FCloseA
Close a file

##In :
+ A = hFILE

##Out :

#FRead
Read bytes from file

##In :
+ PUSHW = Dest Ptr
+ PUSHW = Bytes To Read
+ PUSHB = hFILE

##Out :
+ Y,A = Bytes Read

#FWrite

##In:
+ PUSHW = Src Ptr
+ PUSHW = Bytes To Write
+ PUSHB = hFILE

#Out:
+ Y,A = Bytes Written

#FFlushA

##In:
+ A = hFILE

#FSeek

##In:
+ PUSHW = OffsetHi
+ PUSHW = OffsetLo
+ PUSHB = From
+ PUSHB = hFILE

#FTellA

##In:
+ A = hFILE

##Out:
 + Y,A,X = Offset

#FEOFA

##In:
+ A = hFILE

##Out:
+ CC : 
 + A=0 EOF
 + A =0 NOT EOF
+ CS :

#RemoveYA

#Rename
Rename a file

##In :
+ PUSHW = New Name
+ PUSHW = Old Name

##Out :

#Stat
Return information about a file

##In :
+ PUSHW = PTR to S.STAT buffer
+ PUSHW = PTR to Filename (PSTR)

##Out :

#FileSearch

##In:
+ PUSHW = Ptr to Search Path (PSTR) %LIB%;/SYS/SLIB
+ PUSHW = Ptr to File Name (PSTR)		

#Out:
+ Y,A = PSTR to FilePath (PSTR)
+ X = hMem to FilePath

#GetFullPathYA

##In :
+ Y,A = Filename (PSTR)

#Out :
+ Y,A = FullPath (PSTR)
+ X = hMem of FullPath

#LoadFile

##In:
+ PUSHW = AUXTYPE (Handled by....
+ PUSHB = TYPE  ...
+ PUSHB = MODE  ...
+ PUSHW = PATH ...FOPEN)

##Out:
+ Y,A = File Length
+ X = hMem of Loaded File

#SaveFile

##In:
+ PUSHW = SrcLen
+ PUSHW = SrcPtr
+ PUSHW = AUXTYPE (Handled by....
+ PUSHB = TYPE  ...
+ PUSHB = MODE  ...
+ PUSHW = PATH ...FOPEN)

#GetMem

##In: 
+ PUSHW = Size Requested
+ PUSHB = Options
 + S.MEM.F.INIT0 : init memory with 00
 + S.MEM.F.ALIGN : page aligned

##Out:
+ CC : success
 + YA = PTR to Mem
*	X = hMem
+ CS :
 + A = EC

#FreeMemA

##In:
+ A = hMem To Free

##Out:
+ none.
+ (X,Y unmodified)

#GetMemPtrA

##In:
+ A = hMem

##Out:
+ Y,A = PTR to MemBlock
+ (X unmodified)

#GetMemByIDA

##In:
+ A = hMem

##Out:
+ Y,A = ZPMemMgrSPtr = PTR to S.MEM
+ X unmodified

#NewPStrYA
Create a new copy of PSTR

##In:
+ Y,A = PTR to buffer

##Out:
+ CC : success 
 + Y,A = PTR to String
 + X = hMem (PSTR)
+ CS : error
 + A = SYS error code

#PStrMatch
Compare a String against pattern

##In: 
 + PUSHW = PTR to Pattern (e.g. '*test?.txt')
 + PUSHW = PTR to Src String 

##Out: 
 + CC : match
 + CS : no match

#PStrUprYA/PStrLwrYA
Convert string to UPPERCASE/lowercase

##In:
 + Y,A = PTR to String (PSTR)

##Out:
 + Uppercased/lowercased String in Buffer

#PStrFTime
Convert S.TIME struct to PSTR

##In: 
+ PUSHW = Dst PTR To PSTR Buf
+ PUSHW = Src PTR To Format String
 + %a : Abbreviated weekday name : Thu
 + %A : Full weekday name : Thursday 
 + %b : Abbreviated month name : Aug 
 + %B : Full month name : August 
 + %d : Day of the month, zero-padded (01-31)
 + %H : Hour in 24h format (00-23) 14 
 + %I : Hour in 12h format (01-12) 02 
 + %m : Month as a decimal number (01-12) 08 
 + %M : Minute (00-59) 55 
 + %p : AM or PM designation PM 
 + %S : Second (00-61) 02 
 + %w : Weekday as a decimal number with Sunday as 0 (0-6) 
 + %y : Year, last two digits (00-99)
 + %Y : Year four digits 2001 
+ PUSHW = Src PTR To S.Time

##Out:
 + none. always succeed.

#PStr2StrArrayYA
Convert a PSTR (e.g. : command Line) to a Array of PSTRs (Args[])

##In: 
+ Y,A = PTR to String

##Out:
+ CC : success
 + Y,A = PTR to StrArray
 + X = hMem
+ CS : error
 + A = SYS error code