Sha256: 4c0ca9a091945226efc8ff59e091c6a0746f5c47aee9b31d2e9174b5522746ff
Contents?: true
Size: 1.17 KB
Versions: 13
Compression:
Stored size: 1.17 KB
Contents
# Encode an env hash as a string where secret values have been looked up and all values escaped for Docker.
class Kamal::EnvFile
def initialize(env)
@env = env
end
def to_s
env_file = StringIO.new.tap do |contents|
@env.each do |key, value|
contents << docker_env_file_line(key, value)
end
end.string
# Ensure the file has some contents to avoid the SSHKIT empty file warning
env_file.presence || "\n"
end
def to_io
StringIO.new(to_s)
end
alias to_str to_s
private
def docker_env_file_line(key, value)
"#{key}=#{escape_docker_env_file_value(value)}\n"
end
# Escape a value to make it safe to dump in a docker file.
def escape_docker_env_file_value(value)
# keep non-ascii(UTF-8) characters as it is
value.to_s.scan(/[\x00-\x7F]+|[^\x00-\x7F]+/).map do |part|
part.ascii_only? ? escape_docker_env_file_ascii_value(part) : part
end.join
end
def escape_docker_env_file_ascii_value(value)
# Doublequotes are treated literally in docker env files
# so remove leading and trailing ones and unescape any others
value.to_s.dump[1..-2].gsub(/\\"/, "\"")
end
end
Version data entries
13 entries across 13 versions & 1 rubygems