Class: Gem::Package::TarWriter::BoundedStream
- Defined in:
- lib/rubygems/package/tar_writer.rb
Overview
IO wrapper that allows writing a limited amount of data
Instance Attribute Summary collapse
-
#limit ⇒ Object
readonly
Maximum number of bytes that can be written.
-
#written ⇒ Object
readonly
Number of bytes written.
Instance Method Summary collapse
-
#initialize(io, limit) ⇒ BoundedStream
constructor
Wraps
io
and allows up tolimit
bytes to be written. -
#write(data) ⇒ Object
Writes
data
onto the IO, raising a FileOverflow exception if the number of bytes will be more than #limit.
Constructor Details
#initialize(io, limit) ⇒ BoundedStream
Wraps io
and allows up to limit
bytes to be written
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# File 'lib/rubygems/package/tar_writer.rb', line 30 def initialize(io, limit) @io = io @limit = limit @written = 0 end |
Instance Attribute Details
#limit ⇒ Object (readonly)
Maximum number of bytes that can be written
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# File 'lib/rubygems/package/tar_writer.rb', line 20 def limit @limit end |
#written ⇒ Object (readonly)
Number of bytes written
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# File 'lib/rubygems/package/tar_writer.rb', line 25 def written @written end |
Instance Method Details
#write(data) ⇒ Object
Writes data
onto the IO, raising a FileOverflow exception if the number of bytes will be more than #limit
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# File 'lib/rubygems/package/tar_writer.rb', line 40 def write(data) if data.bytesize + @written > @limit raise FileOverflow, "You tried to feed more data than fits in the file." end @io.write data @written += data.bytesize data.bytesize end |