Shredder

DESCRIPTION:

Shred a file into file fragments, and join fragments back into a restored file.

INSTALL:

$ gem install shredder

HELP:

$ shredder --help
Usage:
  shredder shred [:options+] <shreds=FILENAME>+
  shredder sew [:options+] <shreds=FILENAME>+
Options:
  --n=INTEGER 	 Number of shreds
Types:
  FILENAME   /^[[:print:]]+$/
  INTEGER    /^[2-9]\d*$/
# Examples:
#   shredder shred file.1 file.2 < file.txt
#   shredder shred --n=2 file < file.txt
#   shredder sew file.1 file.2 > file.txt
#   shredder shred --n=2 file > file.txt

SYNOPSIS:

Library

require 'shredder'

Shredder::Streams

require 'stringio'

sewn = StringIO.new("This is a test String: 1, 2, 3.")
sewn.string.length #=> 31
shreds = [StringIO.new, StringIO.new]

shredder = Shredder::Streams.new(sewn, shreds)
shredder.shred #=> 31

shreds[0].string
#=> "T\u0001S\u001AAT\u0016T'\e\t\u001A\u001D\u0012\f\u001D"
shreds[0].string.length #=> 16

shreds[1].string
#=> "<\u001AISA\u0011\as\u0006\a]\u0011\f\u001E\u0013"
shreds[1].string.length #=> 15

restored = StringIO.new
shreds.each{|_|_.rewind}

shredder = Shredder::Streams.new(restored, shreds)
shredder.sew #=> 31

restored.string #=> "This is a test String: 1, 2, 3."

Shredder::Files

sewn = './test/sewn.txt'
shreds = './tmp/shreds'
restored  = './tmp/restored.txt'

File.read(sewn).chomp #=> "This is a test file: 1, 2, 3."
File.size(sewn) #=> 30

shredder = Shredder::Files.new(sewn, shreds, 3)
shredder.shreds
#=> ["./tmp/shreds.1", "./tmp/shreds.2", "./tmp/shreds.3"]
shredder.shred #=> 30

File.read(shreds+'.1') #=> "T\u001A\u001AA\u0016F\t\u0011\u0012\u0013"
File.read(shreds+'.2') #=> "<SST\a\u000F_\u001D\u001E\u001D"
File.read(shreds+'.3') #=> "\u0001IA\u0011T\u0005\u001A\f\f$"
File.size(shreds+'.3') #=> 10

shredder = Shredder::Files.new(restored, shreds, 3)
shredder.sewn #=> "./tmp/restored.txt"
shredder.sew #=> 30
File.read(restored).chomp #=> "This is a test file: 1, 2, 3."

LICENSE:

(The MIT License)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

shredder

Runtime