unixorn/git-extra-commands

#!/usr/bin/env bash
#
# Print a .gitignore file on stdout using templates from gitignore.io
#
# Copyright 2022, Joe Block <jpb@unixorn.net>

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

function 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.
}

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

myname=$(basename "$0")
if ! has curl; then
  fail "$myname requires curl"
fi

if [[ $# -gt 1 ]]; then
  fail "$myname requires you to specify a single language"
fi

if [[ $# != 1 ]]; then
  fail "$myname requires you to specify a language"
fi

exec curl -L -s "https://www.gitignore.io/api/$*"