15146b2b67
We need a way to escape systemd command lines properly as systemd treats unrecognised escape sequences as separate literal characters. This helper function does that.
88 lines
2.3 KiB
Ruby
88 lines
2.3 KiB
Ruby
# typed: strict
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# frozen_string_literal: true
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module Utils
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# Helpers for `brew services` related code.
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module Service
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# Check if a service is running for a specified formula.
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sig { params(formula: Formula).returns(T::Boolean) }
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def self.running?(formula)
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if launchctl?
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quiet_system(launchctl, "list", formula.plist_name)
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elsif systemctl?
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quiet_system(systemctl, "is-active", "--quiet", formula.service_name)
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end
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end
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# Check if a service file is installed in the expected location.
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sig { params(formula: Formula).returns(T::Boolean) }
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def self.installed?(formula)
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(launchctl? && formula.launchd_service_path.exist?) ||
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(systemctl? && formula.systemd_service_path.exist?)
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end
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# Path to launchctl binary.
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sig { returns(T.nilable(Pathname)) }
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def self.launchctl
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return @launchctl if defined? @launchctl
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return if ENV["HOMEBREW_TEST_GENERIC_OS"]
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@launchctl = T.let(which("launchctl"), T.nilable(Pathname))
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end
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# Path to systemctl binary.
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sig { returns(T.nilable(Pathname)) }
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def self.systemctl
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return @systemctl if defined? @systemctl
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return if ENV["HOMEBREW_TEST_GENERIC_OS"]
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@systemctl = T.let(which("systemctl"), T.nilable(Pathname))
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end
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sig { returns(T::Boolean) }
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def self.launchctl?
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!launchctl.nil?
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end
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sig { returns(T::Boolean) }
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def self.systemctl?
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!systemctl.nil?
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end
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# Quote a string for use in systemd command lines, e.g., in `ExecStart`.
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# https://www.freedesktop.org/software/systemd/man/latest/systemd.syntax.html#Quoting
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sig { params(str: String).returns(String) }
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def self.systemd_quote(str)
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result = +"\""
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# No need to escape single quotes and spaces, as we're always double
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# quoting the entire string.
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str.each_char do |char|
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result << case char
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when "\a"
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"\\a"
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when "\b"
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"\\b"
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when "\f"
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"\\f"
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when "\n"
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"\\n"
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when "\r"
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"\\r"
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when "\t"
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"\\t"
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when "\v"
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"\\v"
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when "\\"
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"\\\\"
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when "\""
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"\\\""
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else
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char
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end
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end
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result << "\""
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result.freeze
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end
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end
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end
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