Class: Embulk::FileInput
- Inherits:
-
Object
- Object
- Embulk::FileInput
- Defined in:
- lib/embulk/file_input.rb
Instance Method Summary collapse
- #close ⇒ Object
- #each(&block) ⇒ Object
-
#initialize(java_file_input) ⇒ FileInput
constructor
A new instance of FileInput.
- #next_file ⇒ Object
- #read(count = nil, dest = nil) ⇒ Object
- #to_java ⇒ Object
Constructor Details
#initialize(java_file_input) ⇒ FileInput
Returns a new instance of FileInput.
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# File 'lib/embulk/file_input.rb', line 6 def initialize(java_file_input) @java_file_input = java_file_input @buffer = nil end |
Instance Method Details
#close ⇒ Object
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# File 'lib/embulk/file_input.rb', line 79 def close @java_file_input.close end |
#each(&block) ⇒ Object
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# File 'lib/embulk/file_input.rb', line 19 def each(&block) if @buffer yield @buffer @buffer = nil end while java_buffer = @java_file_input.poll buffer = Buffer.from_java(java_buffer) java_buffer.release yield buffer end end |
#next_file ⇒ Object
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# File 'lib/embulk/file_input.rb', line 11 def next_file if @java_file_input.nextFile return self else return nil end end |
#read(count = nil, dest = nil) ⇒ Object
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# File 'lib/embulk/file_input.rb', line 32 def read(count=nil, dest=nil) if count == nil @buffer ||= Buffer.new while java_buffer = @java_file_input.poll @buffer << Buffer.from_java(java_buffer) java_buffer.release end return nil if @buffer.empty? && count != 0 if dest dest.replace(@buffer) else dest = @buffer end @buffer = nil else @buffer ||= Buffer.new until @buffer.size >= count java_buffer = @java_file_input.poll break unless java_buffer @buffer << Buffer.from_java(java_buffer) java_buffer.release end return nil if @buffer.empty? && count != 0 if @buffer.size <= count if dest dest.replace(@buffer) else dest = @buffer end @buffer = nil else data = @buffer.slice!(0, count) if dest dest.replace(data) else dest = data end end end return dest end |
#to_java ⇒ Object
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# File 'lib/embulk/file_input.rb', line 83 def to_java @java_file_input end |