unixorn/tumult.plugin.zsh

#!/usr/bin/env bash
#
# Open a man page in Preview.app
#
# Copyright 2021, Joe Block <jpb@unixorn.net>

set -o pipefail
if [[ -n "$DEBUG" ]]; then
  set -x
fi

fail() {
  printf '%s\n' "$1" >&2  ## Send message to stderr. Exclude >&2 if you don't want it that way.
  exit "${2-1}"  ## Return a code specified by $2 or 1 by default.
}

# Check if a command exists
has() {
  which "$@" > /dev/null 2>&1
}

if [[ "$(uname -s)" != 'Darwin' ]]; then
  fail 'Sorry, this script only works on macOS'
fi

if has ps2pdf; then
  # shellcheck disable=SC2068
  man -t $@ | ps2pdf - - | open -f -a Preview
else
  # shellcheck disable=SC2016
  fail 'No ps2pdf in your $PATH, failing.'
fi