Re: Slurping a file (was: more spllitting travails)

[Stephane Chazelas <stephane@xxxxxxxxxxxx>]

2024-01-14 11:34:00 +0100, Roman Perepelitsa:
[...]
>     function slurp() {
>       emulate -L zsh -o no_multibyte
>       zmodload zsh/system || return
>       local -a content
>       local -i i
>       while true; do
>         sysread 'content[++i]' && continue
>         (( $? == 5 )) || return
>         break
>       done
>       typeset -g REPLY=${(j::)content}
>     }
[...]

IMO, it would be more useful if the result was returned in the
variable whose name was given as argument (defaulting to REPLY
if none was given like for read or sysread).

And would be better if upon error the returned variable
contained either what was successfully read or nothing (like
read but unlikely sysread).

Maybe something like:

zslurp() {
  emulate -L zsh -o no_multibyte
  typeset -n _zslurp_var=${1-REPLY}
  _zslurp_var=
  zmodload zsh/system || return
  local -a _zslurp_content
  local -i _zslurp_i _zslurp_ret
  while true; do
    sysread '_zslurp_content[++_zslurp_i]' && continue
    _zslurp_ret=$?
    break
  done
  _zslurp_var=${(j::)_zslurp_content}
  (( _zslurp_ret == 5 ))
}

-- 
Stephane