/home/alex/dev/progressbar.sh (1)

#!/bin/bash -
# ------------------------------------------------------------------------------
# progressbar.sh
# ==============
#
# Scope     Native
# Copyright (C) 2024 by RaySoft, Zurich, Switzerland
# License   GNU General Public License (GPL) 2.0
#           https://www.gnu.org/licenses/gpl2.txt
#
# ------------------------------------------------------------------------------

set -o 'noglob' -o 'nounset' -o 'pipefail' # -o 'xtrace' -o 'errexit'

# ------------------------------------------------------------------------------

COUNT=123

# ------------------------------------------------------------------------------

PRINTF=('/usr/local/bin/gprintf')
STTY=('/usr/local/bin/gstty')

# ------------------------------------------------------------------------------

# Current dimension of the terminal (rows, columns)
read -r 'x' 'y' <<<"$("${STTY[@]}" 'size')"

# Get the length of the progress bar
bar_lenght=$((y - 12))

# Do something for 'COUNT' times e.g convert 'count' files
for ((i = 1; i <= COUNT; i++)); do
  # Print the percentage and the progress bar
  "${PRINTF[@]}" "\r%3d%% |%-${bar_lenght}s|" \
    $((100 * i / COUNT)) \
    $("${PRINTF[@]}" '=%.s' $(eval echo "{1..$((bar_lenght * i / COUNT))}"))
done

echo ' done'

# ------------------------------------------------------------------------------

exit 0