Class: BSON::BSON_RUBY
- Inherits:
-
Object
- Object
- BSON::BSON_RUBY
- Defined in:
- lib/bson/bson_ruby.rb
Overview
A BSON seralizer/deserializer in pure Ruby.
Constant Summary collapse
- DEFAULT_MAX_BSON_SIZE =
4 * 1024 * 1024
- MINKEY =
-1
- EOO =
0
- NUMBER =
1
- STRING =
2
- OBJECT =
3
- ARRAY =
4
- BINARY =
5
- UNDEFINED =
6
- OID =
7
- BOOLEAN =
8
- DATE =
9
- NULL =
10
- REGEX =
11
- REF =
12
- CODE =
13
- SYMBOL =
14
- CODE_W_SCOPE =
15
- NUMBER_INT =
16
- TIMESTAMP =
17
- NUMBER_LONG =
18
- MAXKEY =
127
- NULL_BYTE =
"\0"
- UTF8_ENCODING =
Encoding.find('utf-8')
- BINARY_ENCODING =
Encoding.find('binary')
- @@max_bson_size =
DEFAULT_MAX_BSON_SIZE
Class Method Summary collapse
- .deserialize(buf = nil) ⇒ Object
- .max_bson_size ⇒ Object
-
.serialize(obj, check_keys = false, move_id = false) ⇒ Object
Serializes an object.
- .serialize_cstr(buf, val) ⇒ Object
- .serialize_key(buf, key) ⇒ Object
- .to_utf8_binary(str) ⇒ Object
- .update_max_bson_size(connection) ⇒ Object
Instance Method Summary collapse
- #bson_type(o) ⇒ Object
- #deserialize(buf = nil) ⇒ Object
- #deserialize_array_data(buf) ⇒ Object
- #deserialize_binary_data(buf) ⇒ Object
- #deserialize_boolean_data(buf) ⇒ Object
- #deserialize_code_w_scope_data(buf) ⇒ Object
- #deserialize_cstr(buf) ⇒ Object
- #deserialize_date_data(buf) ⇒ Object
- #deserialize_dbref_data(buf) ⇒ Object
- #deserialize_number_data(buf) ⇒ Object
- #deserialize_number_int_data(buf) ⇒ Object
- #deserialize_number_long_data(buf) ⇒ Object
- #deserialize_object_data(buf) ⇒ Object
- #deserialize_oid_data(buf) ⇒ Object
- #deserialize_regex_data(buf) ⇒ Object
- #deserialize_string_data(buf) ⇒ Object
- #encoded_str(str) ⇒ Object
-
#hex_dump ⇒ Object
For debugging.
-
#initialize ⇒ BSON_RUBY
constructor
A new instance of BSON_RUBY.
- #serialize(obj, check_keys = false, move_id = false) ⇒ Object
- #serialize_array_element(buf, key, val, check_keys) ⇒ Object
- #serialize_binary_element(buf, key, val) ⇒ Object
- #serialize_boolean_element(buf, key, val) ⇒ Object
- #serialize_code_w_scope(buf, key, val) ⇒ Object
- #serialize_date_element(buf, key, val) ⇒ Object
- #serialize_dbref_element(buf, key, val) ⇒ Object
- #serialize_eoo_element(buf) ⇒ Object
- #serialize_key_value(k, v, check_keys) ⇒ Object
- #serialize_max_key_element(buf, key) ⇒ Object
- #serialize_min_key_element(buf, key) ⇒ Object
- #serialize_null_element(buf, key) ⇒ Object
- #serialize_number_element(buf, key, val, type) ⇒ Object
- #serialize_object_element(buf, key, val, check_keys, opcode = OBJECT) ⇒ Object
- #serialize_oid_element(buf, key, val) ⇒ Object
- #serialize_regex_element(buf, key, val) ⇒ Object
- #serialize_string_element(buf, key, val, type) ⇒ Object
- #to_a ⇒ Object
- #to_s ⇒ Object
-
#unpack(arg) ⇒ Object
Returns the array stored in the buffer.
Constructor Details
#initialize ⇒ BSON_RUBY
Returns a new instance of BSON_RUBY.
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# File 'lib/bson/bson_ruby.rb', line 49 def initialize @buf = ByteBuffer.new @encoder = BSON_RUBY end |
Class Method Details
.deserialize(buf = nil) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 107 def self.deserialize(buf=nil) new.deserialize(buf) end |
.max_bson_size ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 79 def self.max_bson_size @@max_bson_size end |
.serialize(obj, check_keys = false, move_id = false) ⇒ Object
Serializes an object. Implemented to ensure an API compatible with BSON extension.
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# File 'lib/bson/bson_ruby.rb', line 103 def self.serialize(obj, check_keys=false, move_id=false) new.serialize(obj, check_keys, move_id) end |
.serialize_cstr(buf, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 83 def self.serialize_cstr(buf, val) buf.put_binary(to_utf8_binary(val.to_s)) buf.put_binary(NULL_BYTE) end |
.serialize_key(buf, key) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 88 def self.serialize_key(buf, key) raise InvalidDocument, "Key names / regex patterns must not contain the NULL byte" if key.include? "\x00" self.serialize_cstr(buf, key) end |
.to_utf8_binary(str) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 59 def self.to_utf8_binary(str) str.encode(UTF8_ENCODING).force_encoding(BINARY_ENCODING) end |
.update_max_bson_size(connection) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 75 def self.update_max_bson_size(connection) @@max_bson_size = connection.max_bson_size end |
Instance Method Details
#bson_type(o) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 562 def bson_type(o) case o when nil NULL when Integer NUMBER_INT when Float NUMBER when ByteBuffer BINARY when Code CODE_W_SCOPE when String STRING when Array ARRAY when Regexp REGEX when ObjectId OID when DBRef REF when true, false BOOLEAN when Time DATE when Hash OBJECT when Symbol SYMBOL when MaxKey MAXKEY when MinKey MINKEY when Numeric raise InvalidDocument, "Cannot serialize the Numeric type #{o.class} as BSON; only Fixum, Bignum, and Float are supported." when Date, DateTime raise InvalidDocument, "#{o.class} is not currently supported; " + "use a UTC Time instance instead." else if defined?(ActiveSupport::TimeWithZone) && o.is_a?(ActiveSupport::TimeWithZone) raise InvalidDocument, "ActiveSupport::TimeWithZone is not currently supported; " + "use a UTC Time instance instead." else raise InvalidDocument, "Cannot serialize #{o.class} as a BSON type; it either isn't supported or won't translate to BSON." end end end |
#deserialize(buf = nil) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 195 def deserialize(buf=nil) # If buf is nil, use @buf, assumed to contain already-serialized BSON. # This is only true during testing. if buf.is_a? String @buf = ByteBuffer.new(buf.unpack("C*")) if buf else @buf = ByteBuffer.new(buf.to_a) if buf end @buf.rewind @buf.get_int # eat message size doc = BSON::OrderedHash.new while @buf.more? type = @buf.get case type when STRING, CODE key = deserialize_cstr(@buf) doc[key] = deserialize_string_data(@buf) when SYMBOL key = deserialize_cstr(@buf) doc[key] = deserialize_string_data(@buf).intern when NUMBER key = deserialize_cstr(@buf) doc[key] = deserialize_number_data(@buf) when NUMBER_INT key = deserialize_cstr(@buf) doc[key] = deserialize_number_int_data(@buf) when NUMBER_LONG key = deserialize_cstr(@buf) doc[key] = deserialize_number_long_data(@buf) when OID key = deserialize_cstr(@buf) doc[key] = deserialize_oid_data(@buf) when ARRAY key = deserialize_cstr(@buf) doc[key] = deserialize_array_data(@buf) when REGEX key = deserialize_cstr(@buf) doc[key] = deserialize_regex_data(@buf) when OBJECT key = deserialize_cstr(@buf) doc[key] = deserialize_object_data(@buf) when BOOLEAN key = deserialize_cstr(@buf) doc[key] = deserialize_boolean_data(@buf) when DATE key = deserialize_cstr(@buf) doc[key] = deserialize_date_data(@buf) when NULL key = deserialize_cstr(@buf) doc[key] = nil when UNDEFINED key = deserialize_cstr(@buf) doc[key] = nil when REF key = deserialize_cstr(@buf) doc[key] = deserialize_dbref_data(@buf) when BINARY key = deserialize_cstr(@buf) doc[key] = deserialize_binary_data(@buf) when CODE_W_SCOPE key = deserialize_cstr(@buf) doc[key] = deserialize_code_w_scope_data(@buf) when TIMESTAMP key = deserialize_cstr(@buf) doc[key] = [deserialize_number_int_data(@buf), deserialize_number_int_data(@buf)] when MAXKEY key = deserialize_cstr(@buf) doc[key] = MaxKey.new when MINKEY, 255 # This is currently easier than unpack the type byte as an unsigned char. key = deserialize_cstr(@buf) doc[key] = MinKey.new when EOO break else raise "Unknown type #{type}, key = #{key}" end end @buf.rewind doc end |
#deserialize_array_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 327 def deserialize_array_data(buf) h = deserialize_object_data(buf) a = [] h.each { |k, v| a[k.to_i] = v } a end |
#deserialize_binary_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 389 def deserialize_binary_data(buf) len = buf.get_int type = buf.get len = buf.get_int if type == Binary::SUBTYPE_BYTES Binary.new(buf.get(len), type) end |
#deserialize_boolean_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 298 def deserialize_boolean_data(buf) buf.get == 1 end |
#deserialize_code_w_scope_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 364 def deserialize_code_w_scope_data(buf) buf.get_int len = buf.get_int code = buf.get(len)[0..-2] if code.respond_to? "pack" code = code.pack("C*") end scope_size = buf.get_int buf.position -= 4 scope = @encoder.new().deserialize(buf.get(scope_size)) Code.new(encoded_str(code), scope) end |
#deserialize_cstr(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 552 def deserialize_cstr(buf) chars = "" while true b = buf.get break if b == 0 chars << b.chr end encoded_str(chars) end |
#deserialize_date_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 292 def deserialize_date_data(buf) unsigned = buf.get_long() milliseconds = unsigned >= 2 ** 64 / 2 ? unsigned - 2**64 : unsigned Time.at(milliseconds.to_f / 1000.0).utc # at() takes fractional seconds end |
#deserialize_dbref_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 383 def deserialize_dbref_data(buf) ns = deserialize_string_data(buf) oid = deserialize_oid_data(buf) DBRef.new(ns, oid) end |
#deserialize_number_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 302 def deserialize_number_data(buf) buf.get_double end |
#deserialize_number_int_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 306 def deserialize_number_int_data(buf) unsigned = buf.get_int unsigned >= 2**32 / 2 ? unsigned - 2**32 : unsigned end |
#deserialize_number_long_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 311 def deserialize_number_long_data(buf) unsigned = buf.get_long unsigned >= 2 ** 64 / 2 ? unsigned - 2**64 : unsigned end |
#deserialize_object_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 316 def deserialize_object_data(buf) size = buf.get_int buf.position -= 4 object = @encoder.new().deserialize(buf.get(size)) if object.has_key? "$ref" DBRef.new(object["$ref"], object["$id"]) else object end end |
#deserialize_oid_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 379 def deserialize_oid_data(buf) ObjectId.new(buf.get(12)) end |
#deserialize_regex_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 334 def deserialize_regex_data(buf) str = deserialize_cstr(buf) = deserialize_cstr(buf) opts = 0 opts |= Regexp::IGNORECASE if .include?('i') opts |= Regexp::MULTILINE if .include?('m') opts |= Regexp::EXTENDED if .include?('x') Regexp.new(str, opts) end |
#deserialize_string_data(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 354 def deserialize_string_data(buf) len = buf.get_int bytes = buf.get(len) str = bytes[0..-2] if str.respond_to? "pack" str = str.pack("C*") end encoded_str(str) end |
#encoded_str(str) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 344 def encoded_str(str) if RUBY_VERSION >= '1.9' str.force_encoding("utf-8") if Encoding.default_internal str.encode!(Encoding.default_internal) end end str end |
#hex_dump ⇒ Object
For debugging.
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# File 'lib/bson/bson_ruby.rb', line 278 def hex_dump str = '' @buf.to_a.each_with_index { |b,i| if (i % 8) == 0 str << "\n" if i > 0 str << '%4d: ' % i else str << ' ' end str << '%02X' % b } str end |
#serialize(obj, check_keys = false, move_id = false) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 111 def serialize(obj, check_keys=false, move_id=false) raise(InvalidDocument, "BSON.serialize takes a Hash but got a #{obj.class}") unless obj.is_a?(Hash) raise "Document is null" unless obj @buf.rewind # put in a placeholder for the total size @buf.put_int(0) # Write key/value pairs. Always write _id first if it exists. if move_id if obj.has_key? '_id' serialize_key_value('_id', obj['_id'], false) elsif obj.has_key? :_id serialize_key_value('_id', obj[:_id], false) end obj.each {|k, v| serialize_key_value(k, v, check_keys) unless k == '_id' || k == :_id } else if obj.has_key?('_id') && obj.has_key?(:_id) obj['_id'] = obj.delete(:_id) end obj.each {|k, v| serialize_key_value(k, v, check_keys) } end serialize_eoo_element(@buf) if @buf.size > @@max_bson_size raise InvalidDocument, "Document is too large (#{@buf.size}). BSON documents are limited to #{@@max_bson_size} bytes." end @buf.put_int(@buf.size, 0) @buf end |
#serialize_array_element(buf, key, val, check_keys) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 471 def serialize_array_element(buf, key, val, check_keys) # Turn array into hash with integer indices as keys h = BSON::OrderedHash.new i = 0 val.each { |v| h[i] = v; i += 1 } serialize_object_element(buf, key, h, check_keys, ARRAY) end |
#serialize_binary_element(buf, key, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 412 def serialize_binary_element(buf, key, val) buf.put(BINARY) self.class.serialize_key(buf, key) bytes = val.to_a num_bytes = bytes.length subtype = val.respond_to?(:subtype) ? val.subtype : Binary::SUBTYPE_BYTES if subtype == Binary::SUBTYPE_BYTES buf.put_int(num_bytes + 4) buf.put(subtype) buf.put_int(num_bytes) buf.put_array(bytes) else buf.put_int(num_bytes) buf.put(subtype) buf.put_array(bytes) end end |
#serialize_boolean_element(buf, key, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 431 def serialize_boolean_element(buf, key, val) buf.put(BOOLEAN) self.class.serialize_key(buf, key) buf.put(val ? 1 : 0) end |
#serialize_code_w_scope(buf, key, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 535 def serialize_code_w_scope(buf, key, val) buf.put(CODE_W_SCOPE) self.class.serialize_key(buf, key) # Make a hole for the length len_pos = buf.position buf.put_int(0) buf.put_int(val.code.length + 1) self.class.serialize_cstr(buf, val.code) buf.put_array(@encoder.new.serialize(val.scope).to_a) end_pos = buf.position buf.put_int(end_pos - len_pos, len_pos) buf.position = end_pos end |
#serialize_date_element(buf, key, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 437 def serialize_date_element(buf, key, val) buf.put(DATE) self.class.serialize_key(buf, key) millisecs = (val.to_f * 1000).to_i buf.put_long(millisecs) end |
#serialize_dbref_element(buf, key, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 405 def serialize_dbref_element(buf, key, val) oh = BSON::OrderedHash.new oh['$ref'] = val.namespace oh['$id'] = val.object_id serialize_object_element(buf, key, oh, false) end |
#serialize_eoo_element(buf) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 396 def serialize_eoo_element(buf) buf.put(EOO) end |
#serialize_key_value(k, v, check_keys) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 148 def serialize_key_value(k, v, check_keys) k = k.to_s if check_keys if k[0] == ?$ raise InvalidKeyName.new("key #{k} must not start with '$'") end if k.include? ?. raise InvalidKeyName.new("key #{k} must not contain '.'") end end type = bson_type(v) case type when STRING, SYMBOL serialize_string_element(@buf, k, v, type) when NUMBER, NUMBER_INT serialize_number_element(@buf, k, v, type) when OBJECT serialize_object_element(@buf, k, v, check_keys) when OID serialize_oid_element(@buf, k, v) when ARRAY serialize_array_element(@buf, k, v, check_keys) when REGEX serialize_regex_element(@buf, k, v) when BOOLEAN serialize_boolean_element(@buf, k, v) when DATE serialize_date_element(@buf, k, v) when NULL serialize_null_element(@buf, k) when REF serialize_dbref_element(@buf, k, v) when BINARY serialize_binary_element(@buf, k, v) when UNDEFINED serialize_null_element(@buf, k) when CODE_W_SCOPE serialize_code_w_scope(@buf, k, v) when MAXKEY serialize_max_key_element(@buf, k) when MINKEY serialize_min_key_element(@buf, k) else raise "unhandled type #{type}" end end |
#serialize_max_key_element(buf, key) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 498 def serialize_max_key_element(buf, key) buf.put(MAXKEY) self.class.serialize_key(buf, key) end |
#serialize_min_key_element(buf, key) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 503 def serialize_min_key_element(buf, key) buf.put(MINKEY) self.class.serialize_key(buf, key) end |
#serialize_null_element(buf, key) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 400 def serialize_null_element(buf, key) buf.put(NULL) self.class.serialize_key(buf, key) end |
#serialize_number_element(buf, key, val, type) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 444 def serialize_number_element(buf, key, val, type) if type == NUMBER buf.put(type) self.class.serialize_key(buf, key) buf.put_double(val) else if val > 2**64 / 2 - 1 or val < -2**64 / 2 raise RangeError.new("MongoDB can only handle 8-byte ints") end if val > 2**32 / 2 - 1 or val < -2**32 / 2 buf.put(NUMBER_LONG) self.class.serialize_key(buf, key) buf.put_long(val) else buf.put(type) self.class.serialize_key(buf, key) buf.put_int(val) end end end |
#serialize_object_element(buf, key, val, check_keys, opcode = OBJECT) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 465 def serialize_object_element(buf, key, val, check_keys, opcode=OBJECT) buf.put(opcode) self.class.serialize_key(buf, key) buf.put_array(@encoder.new.serialize(val, check_keys).to_a) end |
#serialize_oid_element(buf, key, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 508 def serialize_oid_element(buf, key, val) buf.put(OID) self.class.serialize_key(buf, key) buf.put_array(val.to_a) end |
#serialize_regex_element(buf, key, val) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 479 def serialize_regex_element(buf, key, val) buf.put(REGEX) self.class.serialize_key(buf, key) str = val.source # We use serialize_key here since regex patterns aren't prefixed with # length (can't contain the NULL byte). self.class.serialize_key(buf, str) = val. = '' << 'i' if (( & Regexp::IGNORECASE) != 0) << 'm' if (( & Regexp::MULTILINE) != 0) << 'x' if (( & Regexp::EXTENDED) != 0) << val. if val.respond_to?(:extra_options_str) # Must store option chars in alphabetical order self.class.serialize_cstr(buf, .split(//).sort.uniq.join) end |
#serialize_string_element(buf, key, val, type) ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 515 def serialize_string_element(buf, key, val, type) buf.put(type) self.class.serialize_key(buf, key) # Make a hole for the length len_pos = buf.position buf.put_int(0) # Save the string start_pos = buf.position self.class.serialize_cstr(buf, val) end_pos = buf.position # Put the string size in front buf.put_int(end_pos - start_pos, len_pos) # Go back to where we were buf.position = end_pos end |
#to_a ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 93 def to_a @buf.to_a end |
#to_s ⇒ Object
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# File 'lib/bson/bson_ruby.rb', line 97 def to_s @buf.to_s end |
#unpack(arg) ⇒ Object
Returns the array stored in the buffer. Implemented to ensure an API compatible with BSON extension.
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# File 'lib/bson/bson_ruby.rb', line 144 def unpack(arg) @buf.to_a end |