code-server/ci/steps/steps-lib.sh

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#!/usr/bin/env bash
# This is a library which contains functions used inside ci/steps
#
# We separated it into it's own file so that we could easily unit test
# these functions and helpers
# Checks whether and environment variable is set.
# Source: https://stackoverflow.com/a/62210688/3015595
is_env_var_set() {
local name="${1:-}"
if test -n "${!name:-}"; then
return 0
else
return 1
fi
}
# Checks whether a directory exists.
directory_exists() {
local dir="${1:-}"
if [[ -d "${dir:-}" ]]; then
return 0
else
return 1
fi
}
# Checks whether a file exists.
file_exists() {
local file="${1:-}"
if test -f "${file:-}"; then
return 0
else
return 1
fi
}
# Checks whether a file is executable.
is_executable() {
local file="${1:-}"
if [ -f "${file}" ] && [ -r "${file}" ] && [ -x "${file}" ]; then
return 0
else
return 1
fi
}