Completely re-vamped restore command. Fixes #12403

The byteback-restore command now uses the rsync xattrs to display
information about the files due to be restored.  It can handle filenames
with spaces (!) and other characters.

1 files changed, 78 insertions, 0 deletions

diff --git a/lib/ffi-xattr.rb b/lib/ffi-xattr.rb
new file mode 100644
index 0000000..2dd1e23
--- /dev/null
+++ b/lib/ffi-xattr.rb
@@ -0,0 +1,78 @@
+require 'ffi'
+require 'ffi-xattr/version'
+require 'ffi-xattr/error'
+
+case RUBY_PLATFORM
+when /linux/
+  require 'ffi-xattr/linux_lib'
+when /darwin|bsd/
+  require 'ffi-xattr/darwin_lib'
+when /mingw/
+  require 'ffi-xattr/windows_lib'
+else
+  raise NotImplementedError, "ffi-xattr not supported on #{RUBY_PLATFORM}"
+end
+
+class Xattr
+  include Enumerable
+
+  # Create a new Xattr instance with path.
+  # Use <tt>:no_follow => true</tt> in options to work on symlink itself instead of following it.
+  def initialize(path, options = {})
+    @path =
+      if path.respond_to?(:to_path)
+        path.to_path
+      elsif path.respond_to?(:to_str)
+        path.to_str
+      else
+        path
+      end
+    raise Errno::ENOENT, @path unless File.exist?(@path)
+
+    @no_follow = !!options[:no_follow]
+  end
+
+  # List extended attribute names
+  def list
+    Lib.list @path, @no_follow
+  end
+
+  # Get an extended attribute value
+  def get(key)
+    Lib.get @path, @no_follow, key.to_s
+  end
+  alias_method :[], :get
+
+  # Set an extended attribute value
+  def set(key, value)
+    Lib.set @path, @no_follow, key.to_s, value.to_s
+  end
+  alias_method :[]=, :set
+
+  # Remove an extended attribute value
+  def remove(key)
+    Lib.remove @path, @no_follow, key.to_s
+  end
+
+  # Iterates over pairs of extended attribute names and values
+  def each(&blk)
+    list.each do |key|
+      yield key, get(key)
+    end
+  end
+
+  # Returns hash of extended attributes
+
+  def to_hash
+    res = {}
+    each { |k,v| res[k] = v }
+
+    res
+  end
+
+  alias_method :to_h, :to_hash
+
+  def as_json(*args)
+    to_hash
+  end
+end