2c959a7d58
And remove the documented stuff from the `example-formula.rb`. Closes Homebrew/homebrew#43241. Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
41 lines
1.2 KiB
Ruby
41 lines
1.2 KiB
Ruby
module Utils
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class InreplaceError < RuntimeError
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def initialize(errors)
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super errors.inject("inreplace failed\n") { |s, (path, errs)|
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s << "#{path}:\n" << errs.map { |e| " #{e}\n" }.join
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}
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end
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end
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module Inreplace
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# Sometimes we have to change a bit before we install. Mostly we
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# prefer a patch but if you need the `prefix` of this formula in the
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# patch you have to resort to `inreplace`, because in the patch
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# you don't have access to any var defined by the formula. Only
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# HOMEBREW_PREFIX is available in the embedded patch.
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# inreplace supports regular expressions.
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# <pre>inreplace "somefile.cfg", /look[for]what?/, "replace by #{bin}/tool"</pre>
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def inreplace(paths, before = nil, after = nil)
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errors = {}
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Array(paths).each do |path|
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s = File.open(path, "rb", &:read).extend(StringInreplaceExtension)
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if before.nil? && after.nil?
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yield s
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else
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after = after.to_s if Symbol === after
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s.gsub!(before, after)
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end
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errors[path] = s.errors if s.errors.any?
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Pathname(path).atomic_write(s)
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end
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raise InreplaceError.new(errors) if errors.any?
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end
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module_function :inreplace
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end
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end
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