Sha256: 19d627a454b1ae8aedcfbe026080722bd454bb3bcfeec66fb092499af64cdb21
Contents?: true
Size: 1.92 KB
Versions: 17
Compression:
Stored size: 1.92 KB
Contents
class StringIO < IO
def self.open(string = "", mode = nil, &block)
io = new(string, mode)
res = block.call(io)
io.close
res
end
attr_accessor :string
def initialize(string = "", mode = 'rw')
@string = string
@position = 0
super(nil, mode)
end
def eof?
check_readable
@position == @string.length
end
def seek(pos, whence = IO::SEEK_SET)
# Let's reset the read buffer, because it will be most likely wrong
@read_buffer = ''
case whence
when IO::SEEK_SET
raise Errno::EINVAL unless pos >= 0
@position = pos
when IO::SEEK_CUR
if @position + pos > @string.length
@position = @string.length
else
@position += pos
end
when IO::SEEK_END
if pos > @string.length
@position = 0
else
@position -= pos
end
end
0
end
def tell
@position
end
def rewind
seek 0
end
def write(string)
check_writable
# Let's reset the read buffer, because it will be most likely wrong
@read_buffer = ''
string = String(string)
if @string.length == @position
@string += string
@position += string.length
else
before = @string[0 .. @position - 1]
after = @string[@position + string.length .. -1]
@string = before + string + after
@position += string.length
end
end
def read(length = nil, outbuf = nil)
check_readable
return if eof?
string = if length
str = @string[@position, length]
@position += length
@position = @string.length if @position > @string.length
str
else
str = @string[@position .. -1]
@position = @string.length
str
end
if outbuf
outbuf.write(string)
else
string
end
end
def sysread(length)
check_readable
read(length)
end
alias eof eof?
alias pos tell
alias pos= seek
alias readpartial read
end
Version data entries
17 entries across 17 versions & 1 rubygems