.functions

# Simple calculator
function calc() {
	local result=""
	result="$(printf "scale=10;$*\n" | bc --mathlib | tr -d '\\\n')"
	#                       └─ default (when `--mathlib` is used) is 20
	#
	if [[ "$result" == *.* ]]; then
		# improve the output for decimal numbers
		printf "$result" |
		sed -e 's/^\./0./'        `# add "0" for cases like ".5"` \
		    -e 's/^-\./-0./'      `# add "0" for cases like "-.5"`\
		    -e 's/0*$//;s/\.$//'   # remove trailing zeros
	else
		printf "$result"
	fi
	printf "\n"
}

# Create a new directory and enter it
function mkd() {
	mkdir -p "$@" && cd "$@"
}

# Change working directory to the top-most Finder window location
function cdf() { # short for `cdfinder`
	cd "$(osascript -e 'tell app "Finder" to POSIX path of (insertion location as alias)')"
}

# Determine size of a file or total size of a directory
function fs() {
	if du -b /dev/null > /dev/null 2>&1; then
		local arg=-sbh
	else
		local arg=-sh
	fi
	if [[ -n "$@" ]]; then
		du $arg -- "$@"
	else
		du $arg .[^.]* *
	fi
}

# Start an HTTP server from a directory, optionally specifying the port
function server() {
	local port="${1:-8000}"
	sleep 1 && open "http://localhost:${port}/" &
	# Set the default Content-Type to `text/plain` instead of `application/octet-stream`
	# And serve everything as UTF-8 (although not technically correct, this doesn’t break anything for binary files)
	python -c $'import SimpleHTTPServer;\nmap = SimpleHTTPServer.SimpleHTTPRequestHandler.extensions_map;\nmap[""] = "text/plain";\nfor key, value in map.items():\n\tmap[key] = value + ";charset=UTF-8";\nSimpleHTTPServer.test();' "$port"
}

# `s` with no arguments opens the current directory in Sublime Text, otherwise
# opens the given location
function os() {
	if [ $# -eq 0 ]; then
		subl .
	else
		subl "$@"
	fi
}

# `o` with no arguments opens current directory, otherwise opens the given
# location
function o() {
	if [ $# -eq 0 ]; then
		open .
	else
		open "$@"
	fi
}