Re: [Gimp-user] reading from txt file

[Shlomi Fish <shlomif shlomifish org>]

On Mon, 08 Jul 2019 10:32:54 +0200
charlysangel <forums gimpusers com> wrote:

> Hi !
>
> I want to create a multi-layer file by reading from a txt file x/y position
> and image name.
>
> I've tried to read from file with code below
>
>               (let* ((fd (fopen filename)))
>                       (let*   (
>                               (c (fread 1 fd))
>                               (res "")
>                               )
>                       (while (and c (not (equal? c " ")))
>                               (set! res (string-append res c))
>                               (set! c (fread 1 fd)))
>                               (if (equal? res "")
>                                       ()
>                                       (cons (string->number res) ())
>                               )
>                       )
>                       (gimp-message (string-append "PosX: " (number->string
> res))) )
>
> I do not understand why it returns :"Error: eval: unbound variable: res "
>
> Could you help, please ?

Hi!

Perhaps use python instead of scheme and use line-based i/o and
https://github.com/shlomif/Freenode-programming-channel-FAQ/blob/master/FAQ_with_ToC__generated.md#where-can-i-learn-to-write-andor-read-regular-expressions
instead of byte by byte read.

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