diff options
Diffstat (limited to 'ruby_1_9_3/lib/rubygems/package/tar_writer.rb')
| -rw-r--r-- | ruby_1_9_3/lib/rubygems/package/tar_writer.rb | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/ruby_1_9_3/lib/rubygems/package/tar_writer.rb b/ruby_1_9_3/lib/rubygems/package/tar_writer.rb deleted file mode 100644 index a73b5e5cab..0000000000 --- a/ruby_1_9_3/lib/rubygems/package/tar_writer.rb +++ /dev/null @@ -1,241 +0,0 @@ -# -*- coding: utf-8 -*- -#-- -# Copyright (C) 2004 Mauricio Julio Fernández Pradier -# See LICENSE.txt for additional licensing information. -#++ - -## -# Allows writing of tar files - -class Gem::Package::TarWriter - - class FileOverflow < StandardError; end - - ## - # IO wrapper that allows writing a limited amount of data - - class BoundedStream - - ## - # Maximum number of bytes that can be written - - attr_reader :limit - - ## - # Number of bytes written - - attr_reader :written - - ## - # Wraps +io+ and allows up to +limit+ bytes to be written - - def initialize(io, limit) - @io = io - @limit = limit - @written = 0 - end - - ## - # Writes +data+ onto the IO, raising a FileOverflow exception if the - # number of bytes will be more than #limit - - def write(data) - if data.size + @written > @limit - raise FileOverflow, "You tried to feed more data than fits in the file." - end - @io.write data - @written += data.size - data.size - end - - end - - ## - # IO wrapper that provides only #write - - class RestrictedStream - - ## - # Creates a new RestrictedStream wrapping +io+ - - def initialize(io) - @io = io - end - - ## - # Writes +data+ onto the IO - - def write(data) - @io.write data - end - - end - - ## - # Creates a new TarWriter, yielding it if a block is given - - def self.new(io) - writer = super - - return writer unless block_given? - - begin - yield writer - ensure - writer.close - end - - nil - end - - ## - # Creates a new TarWriter that will write to +io+ - - def initialize(io) - @io = io - @closed = false - end - - ## - # Adds file +name+ with permissions +mode+, and yields an IO for writing the - # file to - - def add_file(name, mode) # :yields: io - check_closed - - raise Gem::Package::NonSeekableIO unless @io.respond_to? :pos= - - name, prefix = split_name name - - init_pos = @io.pos - @io.write "\0" * 512 # placeholder for the header - - yield RestrictedStream.new(@io) if block_given? - - size = @io.pos - init_pos - 512 - - remainder = (512 - (size % 512)) % 512 - @io.write "\0" * remainder - - final_pos = @io.pos - @io.pos = init_pos - - header = Gem::Package::TarHeader.new :name => name, :mode => mode, - :size => size, :prefix => prefix - - @io.write header - @io.pos = final_pos - - self - end - - ## - # Add file +name+ with permissions +mode+ +size+ bytes long. Yields an IO - # to write the file to. - - def add_file_simple(name, mode, size) # :yields: io - check_closed - - name, prefix = split_name name - - header = Gem::Package::TarHeader.new(:name => name, :mode => mode, - :size => size, :prefix => prefix).to_s - - @io.write header - os = BoundedStream.new @io, size - - yield os if block_given? - - min_padding = size - os.written - @io.write("\0" * min_padding) - - remainder = (512 - (size % 512)) % 512 - @io.write("\0" * remainder) - - self - end - - ## - # Raises IOError if the TarWriter is closed - - def check_closed - raise IOError, "closed #{self.class}" if closed? - end - - ## - # Closes the TarWriter - - def close - check_closed - - @io.write "\0" * 1024 - flush - - @closed = true - end - - ## - # Is the TarWriter closed? - - def closed? - @closed - end - - ## - # Flushes the TarWriter's IO - - def flush - check_closed - - @io.flush if @io.respond_to? :flush - end - - ## - # Creates a new directory in the tar file +name+ with +mode+ - - def mkdir(name, mode) - check_closed - - name, prefix = split_name(name) - - header = Gem::Package::TarHeader.new :name => name, :mode => mode, - :typeflag => "5", :size => 0, - :prefix => prefix - - @io.write header - - self - end - - ## - # Splits +name+ into a name and prefix that can fit in the TarHeader - - def split_name(name) # :nodoc: - raise Gem::Package::TooLongFileName if name.size > 256 - - if name.size <= 100 then - prefix = "" - else - parts = name.split(/\//) - newname = parts.pop - nxt = "" - - loop do - nxt = parts.pop - break if newname.size + 1 + nxt.size > 100 - newname = nxt + "/" + newname - end - - prefix = (parts + [nxt]).join "/" - name = newname - - if name.size > 100 or prefix.size > 155 then - raise Gem::Package::TooLongFileName - end - end - - return name, prefix - end - -end - |