64 lines
1.7 KiB
Ruby
64 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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require "active_support/core_ext/object/blank"
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class String
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# String.chomp, but if result is empty: returns nil instead.
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# Allows `chuzzle || foo` short-circuits.
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# TODO: Deprecate.
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def chuzzle
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s = chomp
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s unless s.empty?
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end
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end
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class NilClass
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# TODO: Deprecate.
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def chuzzle; end
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end
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# Used by the inreplace function (in `utils.rb`).
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module StringInreplaceExtension
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attr_accessor :errors
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def self.extended(str)
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str.errors = []
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end
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def sub!(before, after)
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result = super
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errors << "expected replacement of #{before.inspect} with #{after.inspect}" unless result
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result
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end
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# Warn if nothing was replaced
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def gsub!(before, after, audit_result = true)
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result = super(before, after)
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errors << "expected replacement of #{before.inspect} with #{after.inspect}" if audit_result && result.nil?
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result
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end
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# Looks for Makefile style variable definitions and replaces the
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# value with "new_value", or removes the definition entirely.
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def change_make_var!(flag, new_value)
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return if gsub!(/^#{Regexp.escape(flag)}[ \t]*[\\?\+\:\!]?=[ \t]*((?:.*\\\n)*.*)$/, "#{flag}=#{new_value}", false)
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errors << "expected to change #{flag.inspect} to #{new_value.inspect}"
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end
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# Removes variable assignments completely.
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def remove_make_var!(flags)
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Array(flags).each do |flag|
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# Also remove trailing \n, if present.
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unless gsub!(/^#{Regexp.escape(flag)}[ \t]*[\\?\+\:\!]?=(?:.*\\\n)*.*$\n?/, "", false)
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errors << "expected to remove #{flag.inspect}"
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end
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end
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end
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# Finds the specified variable
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def get_make_var(flag)
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self[/^#{Regexp.escape(flag)}[ \t]*[\\?\+\:\!]?=[ \t]*((?:.*\\\n)*.*)$/, 1]
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end
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end
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