Class: Dev::Tar
- Defined in:
- lib/firespring_dev_commands/tar.rb,
lib/firespring_dev_commands/tar/type_flag.rb,
lib/firespring_dev_commands/tar/pax_header.rb
Overview
Class for natively un-tar’ing a file in ruby
Defined Under Namespace
Instance Attribute Summary collapse
-
#data ⇒ Object
Returns the value of attribute data.
Instance Method Summary collapse
-
#initialize(data = nil) ⇒ Tar
constructor
A new instance of Tar.
-
#unpack(source_path, dest_path) ⇒ Object
Unpack all data in the given tar into the dest_path.
Constructor Details
#initialize(data = nil) ⇒ Tar
Returns a new instance of Tar.
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# File 'lib/firespring_dev_commands/tar.rb', line 8 def initialize(data = nil) @data = data end |
Instance Attribute Details
#data ⇒ Object
Returns the value of attribute data.
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# File 'lib/firespring_dev_commands/tar.rb', line 6 def data @data end |
Instance Method Details
#unpack(source_path, dest_path) ⇒ Object
Unpack all data in the given tar into the dest_path
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# File 'lib/firespring_dev_commands/tar.rb', line 13 def unpack(source_path, dest_path) data.rewind extended_headers = nil ::Gem::Package::TarReader.new(data).each do |entry| # Using https://github.com/kr/tarutil/blob/master/untar.go as a template # Also check out https://go.googlesource.com/go/+/master/src/archive/tar/reader.go?autodive=0%2F%2F%2F case entry.header.typeflag when TypeFlag::TYPE_DIR merge_pax(entry, extended_headers) dest_name = calc_dest_name(source_path, dest_path, entry) create_directory(entry, dest_name) when TypeFlag::TYPE_REG, TypeFlag::TYPE_REG_A merge_pax(entry, extended_headers) dest_name = calc_dest_name(source_path, dest_path, entry) create_file(entry, dest_name) when TypeFlag::TYPE_LINK raise 'Unimplemented file type: Link' when TypeFlag::TYPE_SYMLINK merge_pax(entry, extended_headers) dest_name = calc_dest_name(source_path, dest_path, entry) create_symlink(entry, dest_name) when TypeFlag::TYPE_X_HEADER extended_headers = parse_pax(entry.read) next when TypeFlag::TYPE_CONT, TypeFlag::TYPE_X_GLOBAL_HEADER raise 'Unimplemented file type Cont/XGlobalHeader' when TypeFlag::TYPE_CHAR, TypeFlag::TYPE_BLOCK, TypeFlag::TYPE_FIFO raise 'Unimplemented file type: Char/Block/Fifo' else raise 'Unrecognized file type' end # If we got here we should be done with any extended headers extended_headers = nil end end |