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https://github.com/forth-ev/VolksForth.git
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307 lines
19 KiB
Forth
307 lines
19 KiB
Forth
\ *** Block No. 0 Hexblock 0
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\ 28 jun 88
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DOS loads higher level file functions which go beyond
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including a screen file. Calls to MS-DOS are implemented
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and used for directory manipulation. These functions may
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not work for versions before MS-DOS 3.0.
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\ *** Block No. 1 Hexblock 1
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\ MS-DOS file handli cas 09jun20
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Onlyforth \needs Assembler 2 loadfrom asm.fb
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: fswap isfile@ fromfile @ isfile ! fromfile ! ;
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$80 Constant dta
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| : COMSPEC ( -- string ) [ dos ]
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$2C @ ( DOS-environment:seg) 8 ds@ filename &60 lmove
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filename counted &60 min filename place filename ;
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1 &12 +thru .( MS-DOS functions loaed ) cr
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Onlyforth
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\ *** Block No. 2 Hexblock 2
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\ moving blocks ks 04 okt 87
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| : full? ( -- flag ) prev BEGIN @ dup @ 0= UNTIL 6 + @ 0< ;
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: used? ( blk -- f )
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block count b/blk 1- swap skip nip 0<> ;
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| : (copy ( from to -- )
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full? IF save-buffers THEN isfile@ fromfile @ -
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IF dup used? Abort" target block not empty" THEN
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dup isfile@ core? IF prev @ emptybuf THEN
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isfile@ 0= IF offset @ + THEN
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isfile@ rot fromfile @ (block 6 - 2! update ;
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\ *** Block No. 3 Hexblock 3
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\ moving blocks ks 04 okt 87
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| : blkmove ( from to quan -- ) 3 arguments save-buffers
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>r over r@ + over u> >r 2dup u< r> and
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IF r@ r@ d+ r> 0 ?DO -1 -2 d+ 2dup (copy LOOP
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ELSE r> 0 ?DO 2dup (copy 1 1 d+ LOOP
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THEN save-buffers 2drop ;
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: copy ( from to -- ) 1 blkmove ;
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: convey ( blk1 blk2 to.blk -- )
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3 arguments >r 2dup swap - >r
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fswap dup capacity 1- > isfile@ 0<> and
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fswap r> r@ + capacity 1- > isfile@ 0<> and or >r
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1+ over - dup 0> not r> or Abort" nein" r> swap blkmove ;
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\ *** Block No. 4 Hexblock 4
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\ MORE extending forth files ks 10 okt 87
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Dos also definitions
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| : addblock ( blk -- ) dup buffer dup b/blk blank
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isfile@ f.size dup 2@ b/blk 0 d+ rot 2!
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swap isfile@ fblock! ;
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Forth definitions
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: more ( n -- ) 1 arguments isfile@
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IF capacity swap bounds ?DO I addblock LOOP close exit
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THEN drop ;
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\ *** Block No. 5 Hexblock 5
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\ file eof? create dta-addressing ks 03 apr 88
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Dos definitions
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: ftime ( -- mm hh )
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isfile@ f.time @ $20 u/mod nip $40 u/mod ;
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: fdate ( -- dd mm yy )
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isfile@ f.date @ $20 u/mod $10 u/mod &80 + ;
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: .when base push decimal
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fdate rot 3 .r ." ." swap 2 .r ." ." 2 .r
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ftime 3 .r ." :" 2 .r ;
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\ *** Block No. 6 Hexblock 6
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\ ks 20mar88
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: (.fcb ( fcb -- )
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dup .file ?dup 0=exit pushfile
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isfile ! &13 tab ." is"
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isfile@ f.handle @ 2 .r
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isfile@ f.size 2@ 7 d.r .when
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space isfile@ f.name count type ;
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Forth definitions
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: files file-link
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BEGIN @ dup WHILE cr dup (.fcb stop? UNTIL drop ;
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: ?file isfile@ (.fcb ;
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\ *** Block No. 7 Hexblock 7
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\ dir make makefile ks 25 okt 87
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Forth definitions
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: killfile close
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isfile@ f.name filename >asciz ~unlink drop ;
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: emptyfile isfile@ 0=exit
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isfile@ f.name filename >asciz 0 ~creat ?diskerror
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isfile@ f.handle ! isfile@ f.size 4 erase ;
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: make close name isfile@ fname! emptyfile ;
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: makefile File last @ name> execute emptyfile ;
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\ *** Block No. 8 Hexblock 8
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\ getpath ks 10 okt 87
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Dos definitions
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| &40 Constant pathlen
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| Create pathes 0 c, pathlen allot
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| : (setpath ( string -- ) count
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dup pathlen u> Abort" path too long" pathes place ;
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| : getpath ( +n -- string / ff )
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>r 0 pathes count r> 0
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DO rot drop Ascii ; skip stash Ascii ; scan LOOP
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drop over - ?dup
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IF here place here dup count + 1- c@
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?" :\" ?exit Ascii \ here append exit
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THEN 0= ;
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\ *** Block No. 9 Hexblock 9
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\ pathsearch .path path ks 09 okt 87
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: pathsearch ( string -- asciz *f ) dup >r
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(fsearch dup 0= IF rdrop exit THEN 2drop 0 0
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BEGIN drop 1+ dup getpath ?dup 0=
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IF drop r> filename >asciz 2 exit THEN
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r@ count 2 pick attach (fsearch
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0= UNTIL nip rdrop false ;
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' pathsearch Is fsearch
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Forth definitions
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: .path pathes count type ;
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: path name nullstring? IF .path exit THEN (setpath ;
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\ *** Block No. 10 Hexblock A
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\ call another executable file ks 04 aug 87
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Dos definitions
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| Create cpb 0 , \ inherit parent environment
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dta , ds@ , $5C , ds@ , $6C , ds@ , Label ssave 0 ,
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| Code ~exec ( asciz -- *f )
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I push R push U push S ssave #) mov cpb # R mov
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$4B00 # A mov $21 int C: D mov D D: mov D S: mov
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D E: mov ssave #) S mov CS not
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?[ A A xor A push $2F # A+ mov $21 int E: A mov
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A D: mov C: A mov A E: mov R I mov dta # W mov
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$40 # C mov rep movs A D: mov A pop
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]? A W xchg dta # D mov $1A # A+ mov $21 int
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W D mov U pop R pop I pop Next
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end-code
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\ *** Block No. 11 Hexblock B
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\ calling MS-DOS thru forth interpreter ks 19 mr 88
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| : execute? ( extension -- *f )
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count filename count Ascii . scan drop swap
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2dup 1+ erase move filename 1+ ~exec ;
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: fcall ( string -- ) count filename place ds@ cpb 4+ !
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" .EXE" execute? dup IF drop " .COM" execute? THEN
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?diskerror ;
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: fdos ( string -- )
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dta $80 erase " /c " count dta place count dta attach
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status push status off .status COMSPEC fcall curat? at ;
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\ *** Block No. 12 Hexblock C
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\ einige MS-DOS Funktionen msdos call ks 10 okt 87
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: dos: Create ," Does> count here place
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Ascii " parse here attach here fdos ;
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Forth definitions
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dos: dir dir "
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dos: ren ren "
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dos: md md "
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dos: cd cd "
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dos: rd rd "
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dos: fcopy copy "
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dos: delete del "
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dos: ftype type "
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\ *** Block No. 13 Hexblock D
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\ msdos call ks 23 okt 88
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: msdos savevideo status push status off .status
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flush dta off COMSPEC fcall restorevideo ;
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: call name source >in @ /string c/l umin
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dta place dta dta >asciz drop [compile] \
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status push status off .status fcall curat? at ;
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\ *** Block No. 14 Hexblock E
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\ time date ks 19 mr 88
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Dos definitions
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: ftime ( -- mm hh )
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open isfile@ f.time @ $20 u/mod nip $40 u/mod ;
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: fdate ( -- dd mm yy )
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open isfile@ f.date @ $20 u/mod $10 u/mod &80 + ;
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\ *** Block No. 15 Hexblock F
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\ ~lseek position? ks 10 okt 87
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Dos definitions
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Code ~lseek ( d handle method -- d' )
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R W mov D A mov R pop C pop D pop
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$42 # A+ mov $21 int W R mov CS not
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?[ A push Next ]? A D xchg ;c: ?diskerror ;
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Forth definitions
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: position? ( -- dfaddr )
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isfile@ f.handle @ 0= Abort" file not open"
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0 0 isfile@ f.handle @ 1 ~lseek ;
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\ *** Block No. 16 Hexblock 10
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\ *** Block No. 17 Hexblock 11
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