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module Utils
class InreplaceError < RuntimeError
def initialize(errors)
formatted_errors = errors.inject("inreplace failed\n") do |s, (path, errs)|
s << "#{path}:\n" << errs.map { |e| " #{e}\n" }.join
end
super formatted_errors
end
end
module Inreplace
# Sometimes we have to change a bit before we install. Mostly we
# prefer a patch but if you need the `prefix` of this formula in the
# patch you have to resort to `inreplace`, because in the patch
# you don't have access to any var defined by the formula. Only
# HOMEBREW_PREFIX is available in the embedded patch.
# inreplace supports regular expressions.
# <pre>inreplace "somefile.cfg", /look[for]what?/, "replace by #{bin}/tool"</pre>
def inreplace(paths, before = nil, after = nil, audit_result = true)
errors = {}
Array(paths).each do |path|
s = File.open(path, "rb", &:read).extend(StringInreplaceExtension)
if before.nil? && after.nil?
yield s
else
after = after.to_s if after.is_a? Symbol
s.gsub!(before, after, audit_result)
end
errors[path] = s.errors unless s.errors.empty?
Pathname(path).atomic_write(s)
end
raise InreplaceError, errors unless errors.empty?
end
module_function :inreplace
end
end
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