geekcode

#!/bin/sh

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Copyright 2021 Jeremy Brubaker <јЬruЬаkе@оrіоnаrtѕ.іо>
#
# abstract: convert a commented geekcode file into a proper geekcode
#

# Defaults {{{1
#
DEFAULT_WIDTH=72
VERSION='1.0'
GEEKCODE="$HOME/.geekcode"

# Documentation {{{1
#
print_help() (
    cat <<EOF
Usage: $0 [option]
Convert a commented geekcode file into a proper geekcode

See https://github.com/telavivmakers/geek_code for the Geek Code specification.

 -f FILE       get geekcode from FILE
 -w WIDTH      use WIDTH as the maximum line width (Default: $DEFAULT_WIDTH)
 -b            output Geek Code Block delimiters
 -v            display version info and exit
 -h            display this help and exit
EOF
) >&2

print_version() (
    cat <<EOF
$0 $VERSION
Copyright (C) 2021 Orion Arts
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Jeremy Brubaker.
EOF
) >&2

# Process options {{{1
#
width=$DEFAULT_WIDTH
block='n'

while getopts 'f:w:bvh' opt; do
    case $opt in
        f) GEEKCODE=$OPTARG ;;
        w) width=$OPTARG ;;
        b) block='y' ;;
        v) print_version; exit ;;
        h|?) print_help; exit ;;
    esac
done

# Generate geekcode {{{1
#
if [ ! -r "$GEEKCODE" ]; then
    printf "%s not found. Exiting!\n" "$GEEKCODE" >&2
    exit 1
fi

if [ "$block" = "y" ]; then
    version=$(head -1 "$GEEKCODE" | sed -e 's/^# *//')
    printf "%s\n" "-----BEGIN GEEK CODE BLOCK-----"
    printf "%s\n" "$version"
fi

< "$GEEKCODE" sed -e '/^#/d' -e 's/ *#.*$//' \
    | tr '\n' ' ' \
    | sed -e 's/ *$//' \
    | fold -w"$width" -s

printf "%s\n" ""

if [ "$block" = "y" ]; then
    printf "%s\n" "------END GEEK CODE BLOCK------"
fi