Module: Utils::Inreplace

Included in:
Formula
Defined in:
Library/Homebrew/utils/inreplace.rb

Class Method Summary collapse

Class Method Details

.inreplace(paths, before = nil, after = nil, audit_result = true) ⇒ Object

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”, /lookwhat?/, “replace by #bin/tool”</pre>

Raises:


19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
 
# File 'Library/Homebrew/utils/inreplace.rb', line 19

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