home/files/bin/mkgit

#!/bin/sh

NAME="Alejandro Mery"
EMAIL="amery@geeks.cl"
BASE="git@github.com:amery/"

err() {
	if [ $# -eq 0 ]; then
		cat
	else
		echo "$*"
	fi >&2
}

usage() {
	[ $# -eq 0 ] || echo "$*" >&2

	err <<-EOT
	Usage: $0 <remote> [<dir>]
	EOT
	exit 1
}

[ $# -eq 1 -o $# -eq 2 ] || usage

if expr "$1" : '.*:' > /dev/null; then
	REMOTE="$1"
else
	REMOTE="$BASE$1"
fi

DIR="${2:-${REMOTE##*/}}"
if [ ! -d "$DIR/.git" ]; then
	mkdir -p "$DIR" && cd "$DIR" && git init || exit $?
else
	cd "$DIR" || exit $?
	err "WARNING: $PWD already under git control"
fi

for x in \
	"user.name:$NAME" \
	"user.email:$EMAIL" \
	"remote.origin.url:$REMOTE" \
	; do

	k="${x%%:*}"
	v="${x#*:}"
	x="$(git config "$k")"
	if [ -z "$v" ]; then
		continue
	elif [ -z "$x" -a "$k" = "remote.origin.url" ]; then
		git remote add origin "$v"
	elif [ "$v" != "$x" ]; then
		[ -z "$x" ] || err "WARNING:$k: $x -> $v"
		git config "$k" "$v"
	fi
	x=$(git config "$k")

	if [ "$v" = "$x" ]; then
		echo "$k=$v"
	else
		err "ERROR:$k: set to '$x' instead of '$v'"
	fi
done

echo "Enjoy! \`cd $DIR\`"