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module FFI_Yajl
class EncodeError < StandardError; end
class Encoder
attr_accessor :opts
def encode(obj)
# initialization that we can do in pure ruby
yajl_gen_opts = {}
yajl_gen_opts[:yajl_gen_validate_utf8] = true
yajl_gen_opts[:yajl_gen_beautify] = false
yajl_gen_opts[:yajl_gen_indent_string] = " "
if opts[:pretty]
yajl_gen_opts[:yajl_gen_beautify] = true
yajl_gen_opts[:yajl_gen_indent_string] = opts[:indent] ? opts[:indent] : " "
end
# call either the ext or ffi hook
str = do_yajl_encode(obj, yajl_gen_opts)
str.force_encoding('UTF-8') if defined? Encoding
str
end
def self.encode(obj, *args)
new(*args).encode(obj)
end
def initialize(opts = {})
@opts = opts
end
def self.raise_error_for_status(status)
case status
when 1 # yajl_gen_keys_must_be_strings
raise FFI_Yajl::EncodeError, "YAJL internal error: attempted use of non-string object as key"
when 2 # yajl_max_depth_exceeded
raise FFI_Yajl::EncodeError, "Max nesting depth exceeded"
when 3 # yajl_gen_in_error_state
raise FFI_Yajl::EncodeError, "YAJL internal error: a generator function (yajl_gen_XXX) was called while in an error state"
when 4 # yajl_gen_generation_complete
raise FFI_Yajl::EncodeError, "YAJL internal error: attempted to encode to an already-complete document"
when 5 # yajl_gen_invalid_number
raise FFI_Yajl::EncodeError, "Invalid number: cannot encode Infinity, -Infinity, or NaN"
when 6 # yajl_gen_no_buf
raise FFI_Yajl::EncodeError, "YAJL internal error: yajl_gen_get_buf was called, but a print callback was specified, so no internal buffer is available"
else
raise FFI_Yajl::EncodeError, "Unknown YAJL Error, please report this as a bug"
end
end
end
end
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