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require "formula"
class FormulaVersions
IGNORED_EXCEPTIONS = [
ArgumentError, NameError, SyntaxError, TypeError,
FormulaSpecificationError, FormulaValidationError,
ErrorDuringExecution, LoadError, MethodDeprecatedError
].freeze
MAX_VERSIONS_DEPTH = 2
attr_reader :name, :path, :repository, :entry_name
def initialize(formula)
@name = formula.name
@path = formula.path
@repository = formula.tap.path
@entry_name = @path.relative_path_from(repository).to_s
@current_formula = formula
@formula_at_revision = {}
end
def rev_list(branch)
repository.cd do
Utils.popen_read("git", "rev-list", "--abbrev-commit", "--remove-empty", branch, "--", entry_name) do |io|
yield io.readline.chomp until io.eof?
end
end
end
def file_contents_at_revision(rev)
repository.cd { Utils.popen_read("git", "cat-file", "blob", "#{rev}:#{entry_name}") }
end
def formula_at_revision(rev)
Homebrew.raise_deprecation_exceptions = true
yield @formula_at_revision[rev] ||= begin
contents = file_contents_at_revision(rev)
nostdout { Formulary.from_contents(name, path, contents) }
end
rescue *IGNORED_EXCEPTIONS => e
# We rescue these so that we can skip bad versions and
# continue walking the history
ohai "#{e} in #{name} at revision #{rev}", e.backtrace if ARGV.debug?
rescue FormulaUnavailableError
return
ensure
Homebrew.raise_deprecation_exceptions = false
end
def bottle_version_map(branch)
map = Hash.new { |h, k| h[k] = [] }
versions_seen = 0
rev_list(branch) do |rev|
formula_at_revision(rev) do |f|
bottle = f.bottle_specification
map[f.pkg_version] << bottle.rebuild unless bottle.checksums.empty?
versions_seen = (map.keys + [f.pkg_version]).uniq.length
end
return map if versions_seen > MAX_VERSIONS_DEPTH
end
map
end
def previous_version_and_checksum(branch)
map = {}
rev_list(branch) do |rev|
formula_at_revision(rev) do |f|
[:stable, :devel].each do |spec_sym|
next unless spec = f.send(spec_sym)
map[spec_sym] ||= { version: spec.version, checksum: spec.checksum }
end
end
break if map[:stable] || map[:devel]
end
map[:stable] ||= {}
map[:devel] ||= {}
map
end
def version_attributes_map(attributes, branch)
attributes_map = {}
return attributes_map if attributes.empty?
attributes.each do |attribute|
attributes_map[attribute] ||= {
stable: {},
devel: {},
}
end
stable_versions_seen = 0
rev_list(branch) do |rev|
formula_at_revision(rev) do |f|
attributes.each do |attribute|
map = attributes_map[attribute]
set_attribute_map(map, f, attribute)
stable_keys_length = (map[:stable].keys + [f.version]).uniq.length
stable_versions_seen = [stable_versions_seen, stable_keys_length].max
end
end
break if stable_versions_seen > MAX_VERSIONS_DEPTH
end
attributes_map
end
private
def set_attribute_map(map, f, attribute)
if f.stable
map[:stable][f.stable.version] ||= []
map[:stable][f.stable.version] << f.send(attribute)
end
return unless f.devel
map[:devel][f.devel.version] ||= []
map[:devel][f.devel.version] << f.send(attribute)
end
end
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