#!/bin/bash
# Copyright (c) 2023-2024 Amin Bandali <
[email protected]>
#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved. This file is offered as-is,
# without any warranty.
set -eu
filename=
title=
usage()
{
printf "Usage: $0 [filename] [title]\n"
}
usage()
{
cat <<EOF
Usage: $0 [OPTIONS] [filename] [title]
The following OPTIONS are accepted:
-h, --help print help and exit
EOF
exit $1
}
main()
{
temp=$(getopt -o 'h' --long 'help' -n "$0" -- "$@") || usage 1
eval set -- "$temp"
unset temp
while true; do
case "$1" in
'-h'|'--help') usage 0 ;;
'--') shift; break ;;
*)
printf "$0: internal error while parsing args\n" >&2
usage 1
;;
esac
done
read filename title <<<"$@"
# Prompt for filename if it was not provided as an arg.
while [ -z "$filename" ]; do
read -erp "filename: " filename
done
# Exit with error if file already exists.
if [ -e "$filename" ]; then
printf "$0: error: file $filename already exists\n"
exit 1
fi
# Check if we have a generate function for the file extension,
# and drop out if not.
ext="${filename##*.}"
if ! type generate_"$ext" 2>/dev/null | \
grep -q "generate_$ext is a function"; then
printf "\
$0: error: no generate function for extension $ext
please define a function named generate_$ext to handle
creation of new $ext files\n"
exit 1
fi
# Prompt for title if it was not provided as an arg.
while [ -z "$title" ]; do
read -erp "title: " title
done
# Run the generate function, which would normally generate the
# output and write it to a new file with the given name.
generate_"$ext"
# Open the newly created file in editor.
$EDITOR "$filename"
}
generate_txt()
{
cat > "$filename" <<EOF
${title}
$(date -R)
TODO: write :-)
Take care, and so long for now.
EOF
}
generate_html()
{
name="${filename##*/}"
name_txt="${name%.${name##*.}}.txt"
slashes="$(printf "$filename" | tr -cd '/')"
depth="${#slashes}"
up_path=
if [ $depth -gt 0 ]; then
up_path="$(printf "../%.0s" $(eval "echo {1..$depth}"))"
fi
cat > "$filename" <<EOF
<!DOCTYPE html><html lang="en"><head>
<title>$title - bandali</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="color-scheme" content="light dark">
<link rel="stylesheet" href="${up_path}bandali.css?v=20240301" type="text/css">
<link rel="alternate" href="$name_txt" title="plain text" type="text/plain">
</head><body>
<main>
<article>
<header><h1>$title</h1></header>
<p>$(date +'%a, %-d %b %Y')</p>
<p>TODO: write :-)</p>
</article>
</main>
<aside>
<div class="text-center">back to <a href="${up_path}home.html">home</a></div>
</aside>
</body></html>
EOF
}
main "$@"
