This is libarchive-ruby, your preferred archiving toolkit in Ruby! libarchive-ruby is a Ruby binding to the famous libarchive library and supports nearly all features the library exposes through it’s C++ interface.
librarchive-ruby focuses on a clean and ruby-like syntax that makes it trivial to create, read, write and extract archive files of various formats. Want to know more? Keep reading!
In order to successfully install libarchive-ruby, you need the following:
-
Ruby >= 1.8.7
-
A C++ compiler (we use the GNU project’s
g++) -
libarchive (we tested with 2.8.4)
This is the easiest and preferred way. Ensure you have a proper built environment for C++ code, and then do
# gem install libarchive-ruby
If you want to be on the bleeding etch, clone the our git repository at GitHub:
$ git clone https://github.com/Hanmac/libarchive-ruby.git $ cd libarchive-ruby
Then you can either choose to use the library from that directory by running
$ rake compile
or to make a gem and install that one.
$ rake gem # gem install --local pkg/libarchive-ruby-x.x.x
First, you have to require the library:
require "archive" #Note this is NOT "libarchive-ruby"
Then you can use the beautiful rubyish API:
Assuming, you have “myarchive.tar.bz2” in the current directory.
a = Archive.new("myarchive.tar.bz2")
puts "This archive contains:"
a.each{|entry| puts entry}
#Archive includes the Enumerable module, making available all that
#nice enumerating functionality:
puts All entries in uppercase are:
puts a.map{|entry| entry.path.upcase}.join("\n")
#Furthermore, you can even read from the files contained in the
#archive without actually extracting it:
a.each{|entry, data| puts "Content of #{entry} is: #{data}"}
Assuming you have “myarchive.tar.bz2” in the current directory.
a = Archive.new("myarchive.tar.bz2") #Extract all files to the current directory a.extract #Extract a specific file a.extract("mydir/myfile") #Restrict what file attributes are extracted: a.extract(:extract => Archive::EXTRACT_OWNER | Archive::EXTRACT_TIME) #Extract only files whose path is longer than 5 characters a.extract_if{|entry| entry.path.size > 5}
Assuming you have three files “a.rb”, “b.cpp” and “README.rdoc” in your current directory:
a = Archive.new("myarchive.tar.gz") a << "a.rb" << "b.cpp" << "README.rdoc"
If you have more than one file to add you can use an Array:
a = Archive.new("myarchive.tar.gz") a << ["a.rb", "b.cpp", "README.rdoc"]
You can manipulate the entry witch is added to the file:
a = Archive.new("myarchive.tar.gz") a.add("a.rb") {|entry| entry.mtime = Time.now } #Note how libarchive-ruby automatically picked up the archive format #you wanted by examining the file extension: a = Archive.new("myarchive.tar.gz") puts a.format_name #=> POSIX ustar format
Have a look at the documentation for the Archive and Archive::Entry classes for more information.
The following people have worked on libarchive-ruby beside me:
-
Quintus <sutniuq ÄT gmx DÖT net> contributed to the docs
libarchive-ruby is a Ruby binding for the C library libarchive.
Copyright © 2011 Hans Mackowiak
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
You can read me via the email address hanmac ÄT gmx DÖT de.
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