diff --git a/example/iOS/GopherClient.forth b/example/iOS/GopherClient.forth index 0b7a72f..84dc436 100644 --- a/example/iOS/GopherClient.forth +++ b/example/iOS/GopherClient.forth @@ -1,17 +1,16 @@ -This is a tiny Gopher client written in RETRO. It's only for the iOS implementation, but could be adapted for others with a little reworking of the file I/O code. +This is a tiny Gopher client. It's intentionally kept minimal, handling only text files and directories. The interface is line oriented. # General Configuration -`GOPHER-DATA` is the name of the file to store the last downloaded content into. +`TARGET` is the name of the buffer to store the last downloaded content into. `WrapPoint` holds the number of characters to display before wrapping output. There is also a `Results` variable which will point to the data set being displayed. ~~~ -'GopherData.txt 'GOPHER-DATA s:const #34 'WrapPoint var 'Results var 'TARGET d:create #1024 #64 * allot @@ -83,9 +82,9 @@ The next word is `display`. This will tokenize a line and display the `type` and ~~~ :display (s-) - #0 !Displayed - ASCII:HT s:tokenize #0 set:nth fetch - fetch-next type s:put ; + &Heap [ #0 !Displayed + ASCII:HT s:tokenize #0 set:nth fetch + fetch-next type s:put ] v:preserve ; ~~~ ~~~ @@ -96,19 +95,21 @@ And finally, tie everything together. This will display an index. ~~~ :display:index (-) - &TARGET ASCII:LF s:tokenize !Results + &Heap [ + &TARGET ASCII:LF s:tokenize !Results - @Results fetch #2 - @Results store + @Results fetch #2 - @Results store - #0 @Results - [ over line display nl n:inc ] - set:for-each drop ; + #0 @Results + [ over line display nl n:inc ] + set:for-each drop + ] v:preserve ; }} ~~~ # Text Viewer -Text files are really easy. We just read the downloaded file into a buffer and display it. +Text files are really easy. We just display the contents of the download buffer. ~~~ :display:text (-) @@ -138,13 +139,14 @@ The last bit is `g`, which is used to navigate a directory. Pass it the line num ~~~ :g (n-) - @Results swap set:nth fetch - ASCII:HT s:tokenize - dup #0 set:nth fetch fetch [ - [ #2 set:nth fetch ] - [ #3 set:nth fetch s:chop s:to-number ] - [ #1 set:nth fetch ] tri grab - ] dip display-by-type ; + &Heeap [ @Results swap set:nth fetch + ASCII:HT s:tokenize + dup #0 set:nth fetch fetch [ + [ #2 set:nth fetch ] + [ #3 set:nth fetch s:chop s:to-number ] + [ #1 set:nth fetch ] tri grab + ] dip display-by-type + ] v:preserve ; ~~~ The final thing to do is just call `home` to get started. @@ -152,4 +154,3 @@ The final thing to do is just call `home` to get started. ~~~ home ~~~ -