I am not very good with files and such, but from what I understand:
⎕←T←⊃¯1↓⍎')HOST date'
Sun Mar 6 01:11:48 CET 2016
⍴T
2 28
So you can save the result of )HOST in a variable if you use
⍎. To feed it a var, I would try something like:
]BOXING 2
⎕←FILE←⍎')HOST cat test.txt'
hello, world This file was written in my $HOME directory. 0
⍴FILE
5
FILE
.→-----------. .⊖. .→-------------------------------------------. .⊖. .→-.
|hello, world| | | |This file was written in my $HOME directory.| | | |0 |
'------------' '-' '--------------------------------------------' '-' '--'
Several things to note here. First of all, linefeeds / carriage returns /
whatever
you want to call them in the file I read seemed to mark nested array ends, and
it seems that those LFs were lost. I don’t know how GNU APL handles LF chars,
so I would recommend you either keep the array boxed or disclose it like I did
in the first example (∊ enlisting it simply catenated all the lines together, as
the LFs were represented by ⊂⍬, boxed empty vectors).
Second, if you’re reading this Jürgen, note that even though ]BOXING was set
to 2, the result of ⎕←FILE is not boxed.
IMHO this is potentially the cleanest way to read a file. I have no idea how to
tie
files and stuff like that.
Best of luck,
Louis
> On 05 Mar 2016, at 03:54, alexwei...@alexweiner.com wrote:
>
> Hi Bug-apl,
>
> Currently, at a point in my code I do something like this:
>
> ⍝assume the variable 'yadda' exists and is correctly formed, as well as the
> read_file function
> success←yadda ⎕fio[7] tie← 'wr'⎕FIO[3] "yadda.file"
> )host ./shellscript.sh <http://shellscript.sh/> yadda.file yadda.file.new
> yadda_new← read_file "yadda.file.new"
> ⍝end of code
>
> My question is: is there either 1. a way to feed )host a variable (I don't
> think that is possible) or 2. a better way to implement this task in its
> entirety. I find it a small nuisance that I have to write and then read a
> file in my code to access non-APL stuff for processing.
>
> -Alex
