Class: UnpackStrategy::Fossil

Inherits:
Object
  • Object
show all
Extended by:
SystemCommand::Mixin
Includes:
UnpackStrategy
Defined in:
Library/Homebrew/unpack_strategy/fossil.rb

Overview

Strategy for unpacking Fossil repositories.

Instance Attribute Summary

Attributes included from UnpackStrategy

#merge_xattrs, #path

Class Method Summary collapse

Methods included from SystemCommand::Mixin

system_command, system_command!

Methods included from UnpackStrategy

#dependencies, detect, #extract, #extract_nestedly, from_extension, from_magic, from_type, #initialize

Class Method Details

.can_extract?(path) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'Library/Homebrew/unpack_strategy/fossil.rb', line 18

def self.can_extract?(path)
  return false unless path.magic_number.match?(/\ASQLite format 3\000/n)

  # Fossil database is made up of artifacts, so the `artifact` table must exist.
  query = "select count(*) from sqlite_master where type = 'view' and name = 'artifact'"
  system_command("sqlite3", args: [path, query]).stdout.to_i == 1
end

.extensions ⇒ Object 


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# File 'Library/Homebrew/unpack_strategy/fossil.rb', line 14

def self.extensions
  []
end