class Handler::Filter
- Handler::Filter
- IO
- Reference
- Object
Overview
A filtering IO for HTTP server contexts Takes a FilterProc which takes the next handler's output and modifies it
Direct Known Subclasses
Defined in:
http_handlers.crConstructors
Instance Method Summary
-
#close
Closes this
IO. -
#flush
Flushes buffered data, if any.
-
#read(slice : Bytes)
Reads at most slice.size bytes from this
IOinto slice. -
#write(slice : Bytes) : Nil
Writes the contents of slice into this
IO.
Constructor Detail
Instance Method Detail
def close
#
Description copied from class IO
Closes this IO.
IO defines this is a no-op method, but including types may override.
def flush
#
Description copied from class IO
Flushes buffered data, if any.
IO defines this is a no-op method, but including types may override.
def read(slice : Bytes)
#
Description copied from class IO
Reads at most slice.size bytes from this IO into slice.
Returns the number of bytes read, which is 0 if and only if there is no
more data to read (so checking for 0 is the way to detect end of file).
io = IO::Memory.new "hello"
slice = Bytes.new(4)
io.read(slice) # => 4
slice # => Bytes[104, 101, 108, 108]
io.read(slice) # => 1
slice # => Bytes[111, 101, 108, 108]
io.read(slice) # => 0
def write(slice : Bytes) : Nil
#
Description copied from class IO
Writes the contents of slice into this IO.
io = IO::Memory.new
slice = Bytes.new(4) { |i| ('a'.ord + i).to_u8 }
io.write(slice)
io.to_s # => "abcd"