gitree

#!/bin/bash

# gitree 0.1.0
# Copyright 2016 Jacob Wahlgren <jacob.wahlgren@gmail.com>


script_name="gitree"

function binary_exists_or_exit {
	hash "$1" 2>/dev/null || { echo >&2 "$1 is required to run $script_name. Please install it and try again."; exit 1; }
}

# Build a string of .gitignored files separated by pipes (|)
function ignore_string {
	# Removing leading ./ works around bug in tree -I option
	# TODO Use -execdir to check for nested git repos even if root dir is not
	find . -exec git check-ignore {} \; -prune | skip_with_pipes | sed 's|^./||' | tr '\n' '|'
}

# Names including a pipe character would not be properly handled by tree -I
function skip_with_pipes {
	# TODO Print message to stderr when a file is skipped
	grep -v '|'
}


binary_exists_or_exit git
binary_exists_or_exit tree

exit_val=1

# Default to cwd
# TODO Don't use cd to make output same as tree
dir="$1"
test -z ${dir} && dir=.
cd ${dir} || exit 1

# TODO Pass options to tree
if git rev-parse --is-inside-work-tree 2>/dev/null >/dev/null; then
	# TODO Following lines are unsafe e.g. if string contains whitespace
	cmd="tree -I $(ignore_string)"
	echo "Running $cmd"
	$cmd
	exit_val=$?
else
	tree
	exit_val=$?
fi

exit ${exit_val}