dot_bash_functions

# SPDX-FileCopyrightText: Chris Wilson <christopher.david.wilson@gmail.com>
#
# SPDX-License-Identifier: MIT

# Shell functions for Bash shells

# shellcheck shell=bash

# ------------------------------------------------------------------------------
# Source shell functions
# ------------------------------------------------------------------------------

if [[ -r "${HOME}/.sh_functions" ]]; then
    # shellcheck source=dot_sh_functions
    . "${HOME}/.sh_functions"
fi

# ------------------------------------------------------------------------------
# Functions
# ------------------------------------------------------------------------------

# Is this shell a login shell?
is_login_shell ()
{
    shopt -q login_shell
}

# Is this shell an interactive shell?
# https://www.gnu.org/software/bash/manual/html_node/Is-this-Shell-Interactive_003f.html
is_interactive_shell ()
{
    [[ $- == *i* ]]
}

# Is this command a specific type? e.g. if is_type ll alias; then ... fi
# https://stackoverflow.com/a/85903
is_type ()
(
    arg_type=$(type -t "${1}")
    [[ -n "${arg_type}" ]] && [[ "${arg_type}" == "${2}" ]]
)

# Does this function exist?
# This is faster than using is_type
# https://stackoverflow.com/a/85932
function_exists ()
{
    declare -F "$1" > /dev/null
}