tools

#!/bin/bash
randpass() {
	local trstring="A-Za-z0-9_\!\@\#\$\%\^\&\*\(\)-+="
	if [ "$1" = "-a" ]; then
		trstring="A-Za-z0-9"
		shift
	fi
	printf "%s\n" "$(LC_CTYPE=C tr -dc "$trstring" < /dev/urandom | head -c ${1:-20})"
}

chmod_format() {
	sed 's/.\(.........\).*/\1/
		h;y/rwsxtSTlL-/IIIIIOOOOO/;x;s/..\(.\)..\(.\)..\(.\)/|\1\2\3/
		y/sStTlLx-/IIIIIIOO/;G
		s/\n\(.*\)/\1;OOO0OOI1OIO2OII3IOO4IOI5IIO6III7/;:k
		s/|\(...\)\(.*;.*\1\(.\)\)/\3|\2/;tk
		s/^0*\(..*\)|.*/\1/;q'
}

readModuleConfig() {
	if [[ -f "$1" ]]; then
		sed -e 's/#.*//' -e 's/[ 	]*$//' -e 's/^[ 	]*//' -e '/^$/ d' "$1"
	fi
}

rebuildModulesConfig() {
	local module
	local modules=$(readModuleConfig "$HOME/.bash_modules")
	cat > "$HOME/.bash_modules" <<-"EOF"
		# bash_modules - defines what modules to load into the bash environment
		# Repository at http://github.com/sukima/dotfiles
		# Generated for the first time by repository install.sh.
		#
		# Uncomment any of the following modules to load on next shell invocation.
		EOF
	for p in ~/.homesick/repos/dotfiles/bash/modules.d/*; do
		module=$(basename "$p")
		echo
		egrep "^#[^!][	]*[^	]" $p | head -n1
		if [[ "$modules" =~ "$module" ]]; then
			echo "$module"
		else
			echo "# $module"
		fi
	done >> ~/.bash_modules
}

# A util function to setup missing file paths that some programs and scripts
# expect.
setupTempPaths() {
	mkdir -p ~/tmp/sessions
	touch ~/.tmux.conf.local
	touch ~/.vim/local.vim
	touch ~/.vim/local_gui.vim
	touch ~/.gitconfig.local
	touch ~/.bash_aliases
	[[ -e ~/.bash_modules ]] || rebuildModulesConfig
}

fixtty() {
	reset
	stty stop undef
	clear
}

# Convinience method to check if a command exists or not.
command_exists() {
	hash "$1" &> /dev/null
}

# Utility functions to manipulate the PATH.
# Used to prevent duplicates on multiple calls.
inPath() {
	[[ "$PATH" == *"$1"* ]]
}

notInPath() {
	[[ "$PATH" != *"$1"* ]]
}

addToPath() {
	if notInPath "$1"; then
		PATH="${PATH}:$1"
	fi
	export PATH
}

prependToPath() {
	if notInPath "$1"; then
		PATH="$1:${PATH}"
	fi
	export PATH
}

clip() {
	if test -z "$CLIPBOARD"; then
		echo "\$CLIPBOARD not defined" 1>&2
		return 1
	fi
	if type -p "$1" >/dev/null; then
		"$@"
	else
		cat "${@:--}"
	fi | $CLIPBOARD
}

rclip() {
	if test -z "$PASTEBOARD"; then
		echo "\$PASTEBOARD not defined" 1>&2
		return 1
	fi
	$PASTEBOARD
}

prunePath() {
	local new_path=":"
	local old_ifs="$IFS"
	IFS=":"
	for entry in $PATH; do
		if ! [[ "$new_path" =~ ":${entry}:" ]]; then
			new_path="${new_path}${entry}:"
		fi
	done
	IFS="$old_ifs"
	new_path="${new_path#:}"
	PATH="${new_path%:}"
	export PATH
}

# vim: ft=sh sw=2 ts=2 noet fdm=marker