Re: cant fix error .. findff.1: line 110: g18.mkv.mp4: syntax error: invalid arithmetic operator (error token is ".mkv.mp4")

[Dennis Williamson]

On Sun, Jun 18, 2023, 2:05 PM alex xmb ratchev <fxmbsw7@gmail.com> wrote:

> i code on random user request scripts .. this one s one
> to find path s and ffmpeg to otherwhere
> suddenly , the error i dont understand
>
> findff.1: line 110: g18.mkv.mp4: syntax error: invalid arithmetic operator
> (error token is ".mkv.mp4")
>
> that line s
>
>  if [[ ${A[$c]} == "${A2[$c]}" && ! -e "$w" ]] ; then
>
> which means as much as
> size of file $c == size of same , but 27s earlier ( $wait loop sleep time )
> and if ! $w ( tmp fs element ) exists
>
> i moved and even removed the $w part , .. error is still showing
>
> the last -x lines besides look like this
>
> + readsav
> + [[ -e /data/data/com.termux/files/home/.findff ]]
> + for c in "${!C[@]}"
> + f=/data/data/com.termux/files/home/aotin/g18.mkv
> + o=/data/data/com.termux/files/home/aot/g18.mkv.mp4
> + w=/data/data/com.termux/files/home/.findff.tmp/g18.mkv.mp4
> + d=/data/data/com.termux/files/home/aot
>
>   < marker >
>
> + declare -p A A2 C
> declare -A A=([g18.mkv.mp4]="329474152" [m1.avi.mp4]="225827840" )
> findff.1: line 108: declare: A2: not found
> declare -A
> C=([g18.mkv.mp4]="/data/data/com.termux/files/home/aotin/g18.mkv"
> [m1.avi.mp4]="/data/data/com.termux/files/home/aotin/m1.avi" )
>
>   < marker >
> here see A has two valid entries
> filename / size
>
> + declare -p
>
> < long declare -p output till few last entries >
>
> declare -- threads="6"
> declare -- tmp="/data/data/com.termux/files/home/.findff.tmp"
> declare -- w="/data/data/com.termux/files/home/.findff.tmp/g18.mkv.mp4"
> declare -- wait="27s"
> declare -x xt_="1"
> findff.1: line 110: g18.mkv.mp4: syntax error: invalid arithmetic operator
> (error token is ".mkv.mp4")
> + [[ /data/data/com.termux/files/home/.findff.tmp != / ]]
> + rm -rf /data/data/com.termux/files/home/.findff.tmp
> ~ $
>
> from test cmd running
> xt_=1 bash -x findff.1
> xt_ to set default test args
>
> so error is in
>
> [[ ${A[$c]} == "${A2[$c]}" ]]
>
> .. no idea to fix it ..
>
> just on a note , on first run there is no A2 assoc , but never seen such
> cause such
>
> .. btw its also the code with the C() s for mapfile
>
> greets , alex xmb software
>

If A2 doesn't exist yet then references to it are treated as if it were a
numerically indexed array but you're trying to access an element using a
non-numeric index which has a period (decimal point) in it. That makes it
look like a floating point numbers which Bash doesn't support. Remember
that the subscript of a numerically indexed array is an arithmetic context.

To fix the problem make sure you declare A2 as associative before your
first reference to it.

>