Class: Excavate::NestedCabFallback

Inherits:
Object
  • Object
show all
Defined in:
lib/excavate/nested_cab_fallback.rb

Overview

Decides whether a failed extraction of a :exe-typed archive should be retried as a CAB.

Some self-extracting EXEs produced by older Microsoft toolchains wrap a CAB rather than a 7z payload. When the 7z reader fails to parse one of these, it surfaces a small number of distinctive error strings. Rather than sniffing those strings inline inside Archive's rescue clause, the heuristic is named and tested here.

Constant Summary collapse

SIGNATURE_PHRASES = 
[
  /\AInvalid file format/,
  /\AUnrecognized archive format/,
  /Invalid \.7z signature/,
].freeze

Class Method Summary collapse

Class Method Details

.applies_to?(type, error) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/excavate/nested_cab_fallback.rb', line 20

def applies_to?(type, error)
  type == :exe && phrase_match?(error.message)
end