80 lines
2.3 KiB
Ruby
80 lines
2.3 KiB
Ruby
# typed: strict
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# frozen_string_literal: true
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module OS
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module Linux
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# Helper functions for querying `ld` information.
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module Ld
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sig { returns(String) }
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def self.brewed_ld_so_diagnostics
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@brewed_ld_so_diagnostics ||= T.let({}, T.nilable(T::Hash[Pathname, String]))
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brewed_ld_so = HOMEBREW_PREFIX/"lib/ld.so"
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return "" unless brewed_ld_so.exist?
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brewed_ld_so_target = brewed_ld_so.readlink
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@brewed_ld_so_diagnostics[brewed_ld_so_target] ||= begin
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ld_so_output = Utils.popen_read(brewed_ld_so, "--list-diagnostics")
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ld_so_output if $CHILD_STATUS.success?
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end
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@brewed_ld_so_diagnostics[brewed_ld_so_target].to_s
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end
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sig { returns(String) }
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def self.sysconfdir
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fallback_sysconfdir = "/etc"
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match = brewed_ld_so_diagnostics.match(/path.sysconfdir="(.+)"/)
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return fallback_sysconfdir unless match
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match.captures.compact.first || fallback_sysconfdir
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end
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sig { returns(T::Array[String]) }
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def self.system_dirs
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dirs = []
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brewed_ld_so_diagnostics.split("\n").each do |line|
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match = line.match(/path.system_dirs\[0x.*\]="(.*)"/)
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next unless match
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dirs << match.captures.compact.first
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end
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dirs
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end
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sig { params(conf_path: T.any(Pathname, String)).returns(T::Array[String]) }
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def self.library_paths(conf_path = Pathname(sysconfdir)/"ld.so.conf")
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conf_file = Pathname(conf_path)
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return [] unless conf_file.exist?
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paths = Set.new
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directory = conf_file.realpath.dirname
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conf_file.readlines.each do |line|
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# Remove comments and leading/trailing whitespace
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line.strip!
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line.sub!(/\s*#.*$/, "")
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if line.start_with?(/\s*include\s+/)
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include_path = Pathname(line.sub(/^\s*include\s+/, "")).expand_path
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wildcard = include_path.absolute? ? include_path : directory/include_path
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Dir.glob(wildcard.to_s).each do |include_file|
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paths += library_paths(include_file)
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end
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elsif line.empty?
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next
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else
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paths << line
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end
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end
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paths.to_a
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end
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end
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end
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end
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