Is it really necessary to do it like this?

[Stephan Schutter]

To make the text end up below the banner image I had to do this (see below). Is there a simpler, better way? 

while true; do

local _info_rendered _info_line _info_trimmed _info_label

local -a yad_cmd

_info_rendered=$(printf '%b' "$_INFO_TXT")

# Build yad command so informational text is rendered as stacked labels

yad_cmd=(

--form

--image="/opt/rtd/modules/oem-bundle-manager.mod/image/banner.png"

--image-on-top

--title="${_title}"

--columns=1

)

while IFS= read -r _info_line; do

_info_trimmed="${_info_line#"${_info_line%%[![:space:]]*}"}"

_info_trimmed="${_info_trimmed%"${_info_trimmed##*[![:space:]]}"}"

[[ -z "$_info_trimmed" ]] && continue

_info_label="${_info_trimmed//:/\\:}"

yad_cmd+=(--field="$_info_label":LBL)

done <<< "$_info_rendered"

yad_cmd+=(

--width=700

--height=360

--button="Add Bundles to this computer:0"

--button="Remove Bundles from this computer:2"

--button="Information abount this tool:3"

--button="Quit:1"

--buttons-layout=center

)

# Display the yad form and capture the selected button

selection=$(yad "${yad_cmd[@]}")

ret=$?

# Handle the user's selection

case $ret in

0) software::display_bundle_install_choices_gtk --zenity ;;

1) clear && echo "[Quit]" | tee -a "${_log_file}" ; break ;;

2) software::display_bundle_removal_choices_gtk --zenity;;

3) zenity::display_info "$_ABOUT" ;;

252) clear && echo "[ESC]" | tee -a "${_log_file}" && break ;;

*) clear && echo "[Unknown Request]" | tee -a "$${_log_file}" && break ;;

esac

unset _ret

done

[Atishtum Rah]

Hi Stephan,

I am a recent newbie, as far as Yad goes, but I had programmed on Mini/Mainframe systems for over 30 years (retired back in 2012). Only started using Yad instead of Zenity a couple of weeks ago.

From the experiments I have conducted with a utility script's initial screen this looks to probably be the best way to do this. Hope you don't mind but I am going to use your method, with one change, in my script.

The change is to replace the 2nd and 3rd line in the read loop with a call to the following function:

trim() {
  # Trims the leading & trailing whitespace characters from a variable.
  # Syntax: variable="$(trim "${variable}")"
  local var="$1"
  var="${var#"${var%%[![:space:]]*}"}" # leading
  var="${var%"${var##*[![:space:]]}"}" # trailing
  echo -n "$var"

  }

while IFS= read -r _info_line; do


  _info_trimmed="$(trim "${_info_line}")"
  [[ -z "$_info_trimmed" ]] && continue
  ...
  done <<< "$_info_rendered"


I am still learning about Yad but if I find something simpler/better then I'll let you know.

-- Atishtum

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[Kevin M]

I retired in 2006 from an IBM mainframe environment, but Bash keeps my brain alive!

The part of the function to remove leading and trailing white space can be done more simply with awk, using the way print is used, (but it may be slower):

awk '{$1=$1};1'

 

Hope this helps.

Regards 

Kevin 

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[Ananas]

hi

using 'echo' is a much easier solution for cutting leading/trailing spaces

line_with_spaces="     foo bar baz    "

trimmed_line=$(echo $line_with_spaces)

and pay attention - argument of echo must be UNQUOTED

ср, 5 лист. 2025 р. о 19:50 Atishtum Rah <atis...@gmail.com> пише:

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--

wbr,

Victor "Ananas" Ananjevsky

[Julio C. Neves]

I always tell my students: good shell scripting is very simple, but we often tend to complicate it. 😁

Abraços,

Julio

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