retroforth/interfaces/rre_windows.forth
crc ddabe33a63 begin mass renaming of i/o words
FossilOrigin-Name: 1a0573c3e4206a48617f75371b8a5f3073b71011b14442924c92713a3f10a5d0
2018-05-07 16:24:36 +00:00

253 lines
5.7 KiB
Forth

# RETRO
This is a set of extensions for RRE.
# Console Input
~~~
:c:get (-c) `1001 ;
~~~
---------------------------------------------------------------
# Floating Point
~~~
:n:to-float (n-_f:-n) #0 `-6000 ;
:s:to-float (s-_f:-n) #1 `-6000 ;
:f:to-string (f:n-__-s) s:empty dup #2 `-6000 ;
:f:+ (f:ab-c) #3 `-6000 ;
:f:- (f:ab-c) #4 `-6000 ;
:f:* (f:ab-c) #5 `-6000 ;
:f:/ (f:ab-c) #6 `-6000 ;
:f:floor (f:ab-c) #7 `-6000 ;
:f:eq? (f:ab-c) #8 `-6000 ;
:f:-eq? (f:ab-c) #9 `-6000 ;
:f:lt? (f:ab-c) #10 `-6000 ;
:f:gt? (f:ab-c) #11 `-6000 ;
:f:depth (-n) #12 `-6000 ;
:f:dup (f:a-aa) #13 `-6000 ;
:f:drop (f:a-) #14 `-6000 ;
:f:swap (f:ab-ba) #15 `-6000 ;
:f:log (f:ab-c) #16 `-6000 ;
:f:power (f:ab-c) #17 `-6000 ;
:f:to-number (f:a-__-n) #18 `-6000 ;
:f:sin (f:f-f) #19 `-6000 ;
:f:cos (f:f-f) #20 `-6000 ;
:f:tan (f:f-f) #21 `-6000 ;
:f:asin (f:f-f) #22 `-6000 ;
:f:acos (f:f-f) #23 `-6000 ;
:f:atan (f:f-f) #24 `-6000 ;
:f:over (f:ab-aba) f:to-string f:dup s:to-float f:swap ;
:f:tuck (f:ab-bab) f:swap f:over ;
:f:positive? (-f__f:a-) #0 n:to-float f:gt? ;
:f:negative? (-f__f:a-) #0 n:to-float f:lt? ;
:f:negate (f:a-b) #-1 n:to-float f:* ;
:f:abs (f:a-b) f:dup f:negative? [ f:negate ] if ;
:prefix:. (s-__f:-a)
compiling? [ s:keep ] [ s:temp ] choose &s:to-float class:word ; immediate
:f:put (f:a-) f:to-string s:put ;
:f:PI (f:-F) .3.141592 ;
:f:E (f:-F) .2.718281 ;
~~~
---------------------------------------------------------------
# Scripting: Command Line Arguments
~~~
:sys:argc (-n) `-6100 ;
:sys:argv (n-s) s:empty swap `-6101 ;
~~~
---------------------------------------------------------------
# File I/O
This implements words for interfacing with the POSIX file I/O words if
you are using an interface supporting them. All of these are in the
`file:` namespace.
These are pretty much direct wrappers for fopen(), fclose(), etc.
First up, constants for the file modes.
| # | Used For |
| - | ------------------ |
| R | Mode for READING |
| W | Mode for WRITING |
| A | Mode for APPENDING |
~~~
#0 'file:R const
#1 'file:W const
#2 'file:A const
#3 'file:R+ const
~~~
For opening a file, provide the file name and mode. This will return a
number identifying the file handle.
~~~
:file:open (sm-h) `118 ;
~~~
Given a file handle, close the file.
~~~
:file:close (h-) `119 ;
~~~
Given a file handle, read a character.
~~~
:file:read (h-c) `120 ;
~~~
Write a character to an open file.
~~~
:file:write (ch-) `121 ;
~~~
Return the current pointer within a file.
~~~
:file:tell (h-n) `122 ;
~~~
Move the file pointer to the specified location.
~~~
:file:seek (nh-) `123 ;
~~~
Return the size of the opened file.
~~~
:file:size (h-n) `124 ;
~~~
Given a file name, delete the file.
~~~
:file:delete (s-) `125 ;
~~~
Flush pending writes to disk.
~~~
:file:flush (f-) `126 ;
~~~
Given a file name, return `TRUE` if it exists or `FALSE` otherwise.
~~~
:file:exists? (s-f)
file:R file:open dup n:-zero?
[ file:close TRUE ]
[ drop FALSE ] choose ;
~~~
With that out of the way, we can begin building higher level functionality.
The first of these reads a line from the file. This is read to `here`; move
it somewhere safe if you need to keep it around.
The second goes with it. The `for-each-line` word will invoke a combinator
once for each line in a file. This makes some things trivial. E.g., a simple
'cat' implementation could be as simple as:
'filename [ s:put nl ] file:for-each-line
~~~
{{
'FID var
'FSize var
'Action var
'Buffer var
:-eof? (-f) @FID file:tell @FSize lt? ;
:preserve (q-) &FID [ &FSize [ call ] v:preserve ] v:preserve ;
---reveal---
:file:read-line (f-s)
!FID
[ here dup !Buffer buffer:set
[ @FID file:read dup buffer:add
[ ASCII:CR eq? ] [ ASCII:LF eq? ] [ ASCII:NUL eq? ] tri or or ] until
buffer:get drop ] buffer:preserve
@Buffer ;
:file:for-each-line (sq-)
[ !Action
file:R file:open !FID
@FID file:size !FSize
[ @FID file:read-line @Action call -eof? ] while
@FID file:close
] preserve ;
}}
~~~
`file:slurp` reads a file into a buffer.
~~~
{{
'FID var
'Size var
---reveal---
:file:slurp (as-)
[ file:R file:open !FID
buffer:set
@FID file:size !Size
@Size [ @FID file:read buffer:add ] times
@FID file:close
] buffer:preserve ;
}}
~~~
~~~
{{
'FID var
---reveal---
:file:spew (ss-)
file:W file:open !FID [ @FID file:write ] s:for-each @FID file:close ;
}}
~~~
# Interactive Listener
~~~
{{
:version (-) @Version #100 /mod n:put $. c:put n:put ;
:eol? (c-f) [ ASCII:CR eq? ] [ ASCII:LF eq? ] [ ASCII:SPACE eq? ] tri or or ;
:valid? (s-sf) dup s:length n:-zero? ;
:ok (-) compiling? [ nl 'Ok_ s:put ] -if ;
:check-eof (c-c) dup [ #-1 eq? ] [ #4 eq? ] bi or [ 'bye d:lookup d:xt fetch call ] if ;
:check-bs (c-c) dup [ #8 eq? ] [ #127 eq? ] bi or [ buffer:get drop ] if ;
:s:get (-s) [ #1025 buffer:set
[ c:get dup buffer:add check-eof check-bs eol? ] until
buffer:start s:chop ] buffer:preserve ;
---reveal---
:banner (-) 'RETRO_12_(rx- s:put version $) c:put nl
EOM n:put '_MAX,_TIB_@_1025,_Heap_@_ s:put here n:put nl ;
:listen (-)
ok repeat s:get valid? [ interpret ok ] [ drop ] choose again ;
}}
~~~
~~~
:include (s-) `-9999 ;
~~~
~~~
{{
:gather (c-)
dup [ #8 eq? ] [ #127 eq? ] bi or [ drop ] [ buffer:add ] choose ;
:cycle (q-qc) repeat c:get dup-pair swap call not 0; drop gather again ;
---reveal---
:parse-until (q-s)
[ s:empty buffer:set cycle drop-pair buffer:start ] buffer:preserve ;
}}
:s:get (-s) [ [ ASCII:LF eq? ] [ ASCII:CR eq? ] bi or ] parse-until ;
~~~