62 lines
1.7 KiB
Ruby
62 lines
1.7 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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require "formula"
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# Helper class for traversing a formula's previous versions.
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#
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# @api private
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class FormulaVersions
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include Context
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IGNORED_EXCEPTIONS = [
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ArgumentError, NameError, SyntaxError, TypeError,
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FormulaSpecificationError, FormulaValidationError,
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ErrorDuringExecution, LoadError, MethodDeprecatedError
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].freeze
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MAX_VERSIONS_DEPTH = 2
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attr_reader :name, :path, :repository, :entry_name
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def initialize(formula)
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@name = formula.name
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@path = formula.path
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@repository = formula.tap.path
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@entry_name = @path.relative_path_from(repository).to_s
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@current_formula = formula
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@formula_at_revision = {}
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end
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def rev_list(branch)
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repository.cd do
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rev_list_cmd = ["git", "rev-list", "--abbrev-commit", "--remove-empty"]
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rev_list_cmd << "--first-parent" if repository != CoreTap.instance.path
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Utils.popen_read(*rev_list_cmd, branch, "--", entry_name) do |io|
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yield io.readline.chomp until io.eof?
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end
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end
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end
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def file_contents_at_revision(rev)
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repository.cd { Utils.popen_read("git", "cat-file", "blob", "#{rev}:#{entry_name}") }
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end
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def formula_at_revision(rev)
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Homebrew.raise_deprecation_exceptions = true
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yield @formula_at_revision[rev] ||= begin
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contents = file_contents_at_revision(rev)
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nostdout { Formulary.from_contents(name, path, contents, ignore_errors: true) }
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end
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rescue *IGNORED_EXCEPTIONS => e
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# We rescue these so that we can skip bad versions and
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# continue walking the history
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odebug "#{e} in #{name} at revision #{rev}", e.backtrace
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rescue FormulaUnavailableError
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nil
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ensure
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Homebrew.raise_deprecation_exceptions = false
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end
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end
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