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require 'date'
#
# Type conversions
#
class Class
def to_yaml( opts = {} )
raise ArgumentError, "can't dump anonymous class %s" % self.class
end
end
class Object
def is_complex_yaml?
true
end
def to_yaml_type
"!ruby/object:#{self.class}"
end
def to_yaml_properties
instance_variables.sort
end
def to_yaml( opts = {} )
YAML::quick_emit( self.object_id, opts ) { |out|
out.map( self.to_yaml_type ) { |map|
to_yaml_properties.each { |m|
map.add( m[1..-1], instance_eval( m ) )
}
}
}
end
end
YAML.add_ruby_type( /^object/ ) { |type, val|
type, obj_class = YAML.read_type_class( type, Object )
YAML.object_maker( obj_class, val )
}
#
# Maps: Hash#to_yaml
#
class Hash
def is_complex_yaml?
true
end
def to_yaml_type
if self.class == Hash or self.class == YAML::SpecialHash
"!map"
else
"!ruby/hash:#{self.class}"
end
end
def to_yaml( opts = {} )
opts[:DocType] = self.class if Hash === opts
YAML::quick_emit( self.object_id, opts ) { |out|
hash_type = to_yaml_type
if not out.options(:ExplicitTypes) and hash_type == "!map"
hash_type = ""
end
out.map( hash_type ) { |map|
#
# Sort the hash
#
if out.options(:SortKeys)
map.concat( self.sort )
else
map.concat( self.to_a )
end
}
}
end
end
hash_proc = Proc.new { |type, val|
if Array === val
val = Hash.[]( *val ) # Convert the map to a sequence
elsif Hash === val
type, obj_class = YAML.read_type_class( type, Hash )
if obj_class != Hash
o = obj_class.new
o.update( val )
val = o
end
else
raise YAML::Error, "Invalid map explicitly tagged !map: " + val.inspect
end
val
}
YAML.add_builtin_type( 'map', &hash_proc )
YAML.add_ruby_type( /^hash/, &hash_proc )
module YAML
#
# Ruby-specific collection: !ruby/flexhash
#
class FlexHash < Array
def []( k )
self.assoc( k ).to_a[1]
end
def []=( k, *rest )
val, set = rest.reverse
if ( tmp = self.assoc( k ) ) and not set
tmp[1] = val
else
self << [ k, val ]
end
val
end
def has_key?( k )
self.assoc( k ) ? true : false
end
def is_complex_yaml?
true
end
def to_yaml( opts = {} )
YAML::quick_emit( self.object_id, opts ) { |out|
out.seq( "!ruby/flexhash" ) { |seq|
self.each { |v|
if v[1]
seq.add( Hash.[]( *v ) )
else
seq.add( v[0] )
end
}
}
}
end
end
YAML.add_ruby_type( 'flexhash' ) { |type, val|
if Array === val
p = FlexHash.new
val.each { |v|
if Hash === v
p.concat( v.to_a ) # Convert the map to a sequence
else
p << [ v, nil ]
end
}
p
else
raise YAML::Error, "Invalid !ruby/flexhash: " + val.inspect
end
}
end
#
# Structs: export as a !map
#
class Struct
def is_complex_yaml?
true
end
def to_yaml( opts = {} )
YAML::quick_emit( self.object_id, opts ) { |out|
#
# Basic struct is passed as a YAML map
#
struct_name = self.class.name.gsub( "Struct:", "" )
out.map( "!ruby/struct#{struct_name}" ) { |map|
self.members.each { |m|
map.add( m, self[m] )
}
}
}
end
end
YAML.add_ruby_type( /^struct/ ) { |type, val|
if Hash === val
struct_type = nil
#
# Use existing Struct if it exists
#
begin
struct_name, struct_type = YAML.read_type_class( type, Struct )
rescue NameError
end
if not struct_type
struct_def = [ type.split( ':', 4 ).last ]
struct_type = Struct.new( *struct_def.concat( val.keys.collect { |k| k.intern } ) )
end
#
# Set the Struct properties
#
st = struct_type.new
st.members.each { |m|
st.send( "#{m}=", val[m] )
}
st
else
raise YAML::Error, "Invalid Ruby Struct: " + val.inspect
end
}
#
# Sequences: Array#to_yaml
#
class Array
def is_complex_yaml?
true
end
def to_yaml_type
if self.class == Array
"!seq"
else
"!ruby/array:#{self.class}"
end
end
def to_yaml( opts = {} )
opts[:DocType] = self.class if Hash === opts
YAML::quick_emit( self.object_id, opts ) { |out|
array_type = to_yaml_type
if not out.options(:ExplicitTypes) and array_type == "!seq"
array_type = ""
end
out.seq( array_type ) { |seq|
seq.concat( self )
}
}
end
end
array_proc = Proc.new { |type, val|
if Array === val
type, obj_class = YAML.read_type_class( type, Array )
if obj_class != Array
o = obj_class.new
o.concat( val )
val = o
end
val
else
val.to_a
end
}
YAML.add_builtin_type( 'seq', &array_proc )
YAML.add_ruby_type( /^array/, &array_proc )
#
# Exception#to_yaml
#
class Exception
def is_complex_yaml?
true
end
def to_yaml_type
"!ruby/exception:#{self.class}"
end
def to_yaml( opts = {} )
YAML::quick_emit( self.object_id, opts ) { |out|
out.map( self.to_yaml_type ) { |map|
map.add( 'message', self.message )
to_yaml_properties.each { |m|
map.add( m[1..-1], instance_eval( m ) )
}
}
}
end
end
YAML.add_ruby_type( /^exception/ ) { |type, val|
type, obj_class = YAML.read_type_class( type, Exception )
o = YAML.object_maker( obj_class, { 'mesg' => val.delete( 'message' ) }, true )
val.each_pair { |k,v|
o.instance_eval "@#{k} = v"
}
o
}
#
# String#to_yaml
#
class String
def is_complex_yaml?
( self =~ /\n.+/ ? true : false )
end
def is_binary_data?
( self.count( "^ -~", "^\r\n" ) / self.size > 0.3 || self.count( "\x00" ) > 0 )
end
def to_yaml( opts = {} )
complex = false
if self.is_complex_yaml?
complex = true
elsif opts[:BestWidth].to_i > 0
if self.length > opts[:BestWidth] and opts[:UseFold]
complex = true
end
end
YAML::quick_emit( complex ? self.object_id : nil, opts ) { |out|
if complex
if self.is_binary_data?
out.binary_base64( self )
elsif self =~ /^ |#{YAML::ESCAPE_CHAR}| $/
complex = false
else
out.node_text( self )
end
end
if not complex
ostr = if out.options(:KeepValue)
self
elsif empty?
"''"
elsif self =~ /^[^#{YAML::WORD_CHAR}]|#{YAML::ESCAPE_CHAR}|[#{YAML::SPACE_INDICATORS}]( |$)| $|\n|\'/
"\"#{YAML.escape( self )}\""
elsif YAML.detect_implicit( self ) != 'str'
"\"#{YAML.escape( self )}\""
else
self
end
out.simple( ostr )
end
}
end
end
YAML.add_builtin_type( 'str' ) { |type,val| val.to_s }
YAML.add_builtin_type( 'binary' ) { |type,val|
enctype = "m"
if String === val
val.gsub( /\s+/, '' ).unpack( enctype )[0]
else
raise YAML::Error, "Binary data must be represented by a string: " + val.inspect
end
}
#
# Symbol#to_yaml
#
class Symbol
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
YAML::quick_emit( nil, opts ) { |out|
out << "!ruby/sym "
self.id2name.to_yaml( :Emitter => out )
}
end
end
symbol_proc = Proc.new { |type, val|
if String === val
val.intern
else
raise YAML::Error, "Invalid Symbol: " + val.inspect
end
}
YAML.add_ruby_type( 'symbol', &symbol_proc )
YAML.add_ruby_type( 'sym', &symbol_proc )
#
# Range#to_yaml
#
class Range
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
YAML::quick_emit( nil, opts ) { |out|
out << "!ruby/range "
self.inspect.to_yaml( :Emitter => out )
}
end
end
YAML.add_ruby_type( 'range' ) { |type, val|
if String === val and val =~ /^(.*[^.])(\.{2,3})([^.].*)$/
r1, rdots, r2 = $1, $2, $3
Range.new( YAML.try_implicit( r1 ), YAML.try_implicit( r2 ), rdots.length == 3 )
elsif Hash === val
Range.new( val['begin'], val['end'], val['exclude_end?'] )
else
raise YAML::Error, "Invalid Range: " + val.inspect
end
}
#
# Make an RegExp
#
class Regexp
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
YAML::quick_emit( nil, opts ) { |out|
out << "!ruby/regexp "
self.inspect.to_yaml( :Emitter => out )
}
end
end
regexp_proc = Proc.new { |type, val|
if String === val and val =~ /^\/(.*)\/([mix]*)$/
val = { 'REGEXP' => $1, 'MODIFIERS' => $2 }
end
if Hash === val
mods = nil
unless val['MODIFIERS'].to_s.empty?
mods = 0x00
if val['MODIFIERS'].include?( 'x' )
mods |= Regexp::EXTENDED
elsif val['MODIFIERS'].include?( 'i' )
mods |= Regexp::IGNORECASE
elsif val['MODIFIERS'].include?( 'm' )
mods |= Regexp::POSIXLINE
end
end
Regexp::compile( val['REGEXP'], mods )
else
raise YAML::Error, "Invalid Regular expression: " + val.inspect
end
}
YAML.add_domain_type( "perl.yaml.org,2002", /^regexp/, ®exp_proc )
YAML.add_ruby_type( 'regexp', ®exp_proc )
#
# Emit a Time object as an ISO 8601 timestamp
#
class Time
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
YAML::quick_emit( nil, opts ) { |out|
tz = "Z"
# from the tidy Tobias Peters <t-peters@gmx.de> Thanks!
unless self.utc?
utc_same_instant = self.dup.utc
utc_same_writing = Time.utc(year,month,day,hour,min,sec,usec)
difference_to_utc = utc_same_writing - utc_same_instant
if (difference_to_utc < 0)
difference_sign = '-'
absolute_difference = -difference_to_utc
else
difference_sign = '+'
absolute_difference = difference_to_utc
end
difference_minutes = (absolute_difference/60).round
tz = "%s%02d:%02d" % [ difference_sign, difference_minutes / 60, difference_minutes % 60]
end
( self.strftime( "%Y-%m-%d %H:%M:%S." ) +
"%06d %s" % [usec, tz] ).
to_yaml( :Emitter => out, :KeepValue => true )
}
end
end
YAML.add_builtin_type( 'time#ymd' ) { |type, val|
if val =~ /\A(\d{4})\-(\d{1,2})\-(\d{1,2})\Z/
Date.new($1.to_i, $2.to_i, $3.to_i)
else
raise YAML::TypeError, "Invalid !time string: " + val.inspect
end
}
#
# Emit a Date object as a simple implicit
#
class Date
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
opts[:KeepValue] = true
self.to_s.to_yaml( opts )
end
end
#
# Send Integer, Booleans, NilClass to String
#
class Numeric
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
str = self.to_s
if str == "Infinity"
str = ".Inf"
elsif str == "-Infinity"
str = "-.Inf"
elsif str == "NaN"
str = ".NaN"
end
opts[:KeepValue] = true
str.to_yaml( opts )
end
end
YAML.add_builtin_type( 'float' ) { |type, val|
if val =~ /\A[-+]?[\d][\d,]*\.[\d,]*[eE][-+][0-9]+\Z/ # Float (exponential)
$&.tr( ',', '' ).to_f
elsif val =~ /\A[-+]?[\d][\d,]*\.[\d,]*\Z/ # Float (fixed)
$&.tr( ',', '' ).to_f
elsif val =~ /\A([-+]?)\.(inf|Inf|INF)\Z/ # Float (english)
( $1 == "-" ? -1.0/0.0 : 1.0/0.0 )
elsif val =~ /\A\.(nan|NaN|NAN)\Z/
0.0/0.0
elsif type == :Implicit
:InvalidType
else
val.to_f
end
}
YAML.add_builtin_type( 'int' ) { |type, val|
if val =~ /\A[-+]?0[0-7,]+\Z/ # Integer (octal)
$&.oct
elsif val =~ /\A[-+]?0x[0-9a-fA-F,]+\Z/ # Integer (hex)
$&.hex
elsif val =~ /\A[-+]?\d[\d,]*\Z/ # Integer (canonical)
$&.tr( ',', '' ).to_i
elsif val =~ /\A([-+]?)(\d[\d,]*(?::[0-5]?[0-9])+)\Z/
sign = ( $1 == '-' ? -1 : 1 )
digits = $2.split( /:/ ).collect { |x| x.to_i }
val = 0; digits.each { |x| val = ( val * 60 ) + x }; val *= sign
elsif type == :Implicit
:InvalidType
else
val.to_i
end
}
class TrueClass
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
opts[:KeepValue] = true
"true".to_yaml( opts )
end
end
class FalseClass
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
opts[:KeepValue] = true
"false".to_yaml( opts )
end
end
YAML.add_builtin_type( 'bool' ) { |type, val|
if val =~ /\A(\+|true|True|TRUE|yes|Yes|YES|on|On|ON)\Z/
true
elsif val =~ /\A(\-|false|False|FALSE|no|No|NO|off|Off|OFF)\Z/
false
elsif type == :Implicit
:InvalidType
else
raise YAML::TypeError, "Invalid !bool string: " + val.inspect
end
}
class NilClass
def is_complex_yaml?
false
end
def to_yaml( opts = {} )
opts[:KeepValue] = true
"".to_yaml( opts )
end
end
YAML.add_builtin_type( 'null' ) { |type, val|
if val =~ /\A(\~|null|Null|NULL)\Z/
nil
elsif val.empty?
nil
elsif type == :Implicit
:InvalidType
else
raise YAML::TypeError, "Invalid !null string: " + val.inspect
end
}
|