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Diffstat (limited to 'lib/tasks/usage.rb')
| -rw-r--r-- | lib/tasks/usage.rb | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/tasks/usage.rb b/lib/tasks/usage.rb new file mode 100644 index 000000000..d6aac454d --- /dev/null +++ b/lib/tasks/usage.rb @@ -0,0 +1,26 @@ +module Usage + + def usage_message message + puts '' + puts message + puts '' + exit 0 + end + + def check_for_env_vars(env_vars, example) + missing = [] + env_vars.each do |env_var| + unless ENV[env_var] + missing << env_var + end + end + if !missing.empty? + usage = "Usage: This task requires #{env_vars.to_sentence} - missing #{missing.to_sentence}" + if example + usage += "\nExample: #{example}" + end + usage_message usage + end + end + +end
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