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require "dotenv/parser"
require "dotenv/environment"
# The top level Dotenv module. The entrypoint for the application logic.
module Dotenv
class << self
attr_accessor :instrumenter
end
module_function
def load(*filenames)
with(*filenames) do |f|
ignoring_nonexistent_files do
env = Environment.new(f)
instrument("dotenv.load", :env => env) { env.apply }
end
end
end
# same as `load`, but raises Errno::ENOENT if any files don't exist
def load!(*filenames)
with(*filenames) do |f|
env = Environment.new(f)
instrument("dotenv.load", :env => env) { env.apply }
end
end
# same as `load`, but will override existing values in `ENV`
def overload(*filenames)
with(*filenames) do |f|
ignoring_nonexistent_files do
env = Environment.new(f)
instrument("dotenv.overload", :env => env) { env.apply! }
end
end
end
# Internal: Helper to expand list of filenames.
#
# Returns a hash of all the loaded environment variables.
def with(*filenames, &block)
filenames << ".env" if filenames.empty?
filenames.reduce({}) do |hash, filename|
hash.merge! block.call(File.expand_path(filename)) || {}
end
end
def instrument(name, payload = {}, &block)
if instrumenter
instrumenter.instrument(name, payload, &block)
else
block.call
end
end
def ignoring_nonexistent_files
yield
rescue Errno::ENOENT
end
end
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