jj/demos/demo_helpers.sh

79 lines
1.9 KiB
Bash
Raw Normal View History

#!/bin/bash
set -euo pipefail
BASE_DIR=$(realpath "$(dirname "$0")")
UPLOAD=false
PREVIEW=false
DEBUG=false
parse_args() {
for arg in "$@"; do
case "$arg" in
-h|--help)
echo 'Run a given demo.
Arguments:
--preview: Preview the asciicast.
--upload: Upload to asciinema (after previewing, if necessary).
--debug: Show the asciicast as it is being recorded. Note that what you see
will not be exactly the same as what is recorded.
'
exit
;;
--upload)
UPLOAD=true
;;
--preview)
PREVIEW=true
;;
--debug)
DEBUG=true
;;
*)
echo "Unrecognized argument: $arg"
exit 1
;;
esac
done
}
new_tmp_dir() {
local dirname
dirname=$(mktemp -d)
mkdir -p "$dirname"
cd "$dirname"
trap "rm -rf '$dirname'" EXIT
}
run_demo() {
local title="$1"
local expect_script="$2"
expect_script=$(printf "source $BASE_DIR/demo_helpers.tcl
spawn asciinema rec -c \"PS1='$ ' bash --norc\" --title \"$title\"
expect_prompt
%s
quit_and_dump_asciicast_path
" "$expect_script")
if [[ "$DEBUG" == true ]]; then
echo "$expect_script" | /usr/bin/env expect
return
fi
echo "Recording demo (terminal size is $(tput cols)x$(tput lines))..."
if [[ "$PREVIEW" == 'false' ]]; then
echo '(Pass --preview to play the demo automatically once done)'
fi
local asciicast_path
asciicast_path=$(echo "$expect_script" | /usr/bin/env expect | tail -1)
echo "$asciicast_path"
if [[ "$PREVIEW" == 'true' ]]; then
asciinema play "$asciicast_path"
fi
if [[ "$UPLOAD" == 'true' ]]; then
if [[ "$PREVIEW" == 'true' ]] && ! confirm "Upload?"; then
return
fi
: asciinema upload "$asciicast_path"
fi
}