#
# Limited StringIO if no core lib is available
#
begin
require 'stringio'
rescue LoadError
# StringIO based on code by MoonWolf
class StringIO
def initialize(string="")
@string=string
@pos=0
@eof=(string.size==0)
end
def pos
@pos
end
def eof
@eof
end
alias eof? eof
def readline(rs=$/)
if @eof
raise EOFError
else
if p = @string[@pos..-1]=~rs
line = @string[@pos,p+1]
else
line = @string[@pos..-1]
end
@pos+=line.size
@eof =true if @pos==@string.size
$_ = line
end
end
def rewind
seek(0,0)
end
def seek(offset,whence)
case whence
when 0
@pos=offset
when 1
@pos+=offset
when 2
@pos=@string.size+offset
end
@eof=(@pos>=@string.size)
0
end
end
#
# Class method for creating streams
#
def YAML.make_stream( io )
if String === io
io = StringIO.new( io )
elsif not IO === io
raise YAML::Error, "YAML stream must be an IO or String object."
end
if YAML::unicode
def io.readline
YAML.utf_to_internal( readline( @ln_sep ), @utf_encoding )
end
def io.check_unicode
@utf_encoding = YAML.sniff_encoding( read( 4 ) )
@ln_sep = YAML.enc_separator( @utf_encoding )
seek( -4, IO::SEEK_CUR )
end
def io.utf_encoding
@utf_encoding
end
io.check_unicode
else
def io.utf_encoding
:None
end
end
io
end
end
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