start_logging.sh

#!/usr/bin/env bash

# path to log file - global variable
FILE="$1"

# If called directly, read context and enable logging
if [ ! "${FILE}" ] ; then
	CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

	source "$CURRENT_DIR/variables.sh"
	source "$CURRENT_DIR/shared.sh"
	file=$(expand_tmux_format_path "${logging_full_filename}")
	display_message "Started logging to ${logging_full_filename}"

fi

ansifilter_installed() {
	type ansifilter >/dev/null 2>&1 || return 1
}

system_osx() {
	[ $(uname) == "Darwin" ]
}

pipe_pane_ansifilter() {
	tmux pipe-pane "exec cat - | ansifilter >> $FILE"
}

pipe_pane_sed_osx() {
	# Warning, very complex regex ahead.
	# Some characters below might not be visible from github web view.
	local ansi_codes_osx="(\[([0-9]{1,3}((;[0-9]{1,3})*)?)?[m|K]|
|]0;[^]+|[[:space:]]+$)"
	tmux pipe-pane "exec cat - | sed -E \"s/$ansi_codes_osx//g\" >> $FILE"
}

pipe_pane_sed() {
	local ansi_codes="(\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]|
)"
	tmux pipe-pane "exec cat - | sed -r 's/$ansi_codes//g' >> $FILE"
}

start_pipe_pane() {
	if ansifilter_installed; then
		pipe_pane_ansifilter
	elif system_osx; then
		# OSX uses sed '-E' flag and a slightly different regex
		pipe_pane_sed_osx
	else
		pipe_pane_sed
	fi
}

main() {
	start_pipe_pane
}
main