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# encoding: UTF-8
#
# provides sorted_yaml() function, using Ya2YAML.
# see https://github.com/afunai/ya2yaml
#
class Ya2YAML
#
# Author:: Akira FUNAI
# Copyright:: Copyright (c) 2006-2010 Akira FUNAI
# License:: MIT License
#
def initialize(opts = {})
options = opts.dup
options[:indent_size] = 2 if options[:indent_size].to_i <= 0
options[:minimum_block_length] = 0 if options[:minimum_block_length].to_i <= 0
options.update(
{
:printable_with_syck => true,
:escape_b_specific => true,
:escape_as_utf8 => true,
}
) if options[:syck_compatible]
@options = options
end
def _ya2yaml(obj)
#raise 'set $KCODE to "UTF8".' if (RUBY_VERSION < '1.9.0') && ($KCODE != 'UTF8')
if (RUBY_VERSION < '1.9.0')
$KCODE = 'UTF8'
end
'--- ' + emit(obj, 1) + "\n"
rescue SystemStackError
raise ArgumentError, "ya2yaml can't handle circular references"
end
private
def emit(obj, level)
case obj
when Array
if (obj.length == 0)
'[]'
else
indent = "\n" + s_indent(level - 1)
###
### NOTE: a minor modification to normal Ya2YAML...
### We want arrays to be output in sorted order, not just
### Hashes.
###
#obj.collect {|o|
# indent + '- ' + emit(o, level + 1)
#}.join('')
obj.sort {|a,b| a.to_s <=> b.to_s}.collect {|o|
indent + '- ' + emit(o, level + 1)
}.join('')
end
when Hash
if (obj.length == 0)
'{}'
else
indent = "\n" + s_indent(level - 1)
hash_order = @options[:hash_order]
if (hash_order && level == 1)
hash_keys = obj.keys.sort {|x, y|
x_order = hash_order.index(x) ? hash_order.index(x) : Float::MAX
y_order = hash_order.index(y) ? hash_order.index(y) : Float::MAX
o = (x_order <=> y_order)
(o != 0) ? o : (x.to_s <=> y.to_s)
}
elsif @options[:preserve_order]
hash_keys = obj.keys
else
hash_keys = obj.keys.sort {|x, y| x.to_s <=> y.to_s }
end
hash_keys.collect {|k|
key = emit(k, level + 1)
if (
is_one_plain_line?(key) ||
key =~ /\A(#{REX_BOOL}|#{REX_FLOAT}|#{REX_INT}|#{REX_NULL})\z/x
)
indent + key + ': ' + emit(obj[k], level + 1)
else
indent + '? ' + key +
indent + ': ' + emit(obj[k], level + 1)
end
}.join('')
end
when NilClass
'~'
when String
emit_string(obj, level)
when TrueClass, FalseClass
obj.to_s
when Fixnum, Bignum, Float
obj.to_s
when Date
obj.to_s
when Time
offset = obj.gmtoff
off_hm = sprintf(
'%+.2d:%.2d',
(offset / 3600.0).to_i,
(offset % 3600.0) / 60
)
u_sec = (obj.usec != 0) ? sprintf(".%.6d", obj.usec) : ''
obj.strftime("%Y-%m-%d %H:%M:%S#{u_sec} #{off_hm}")
when Symbol
'!ruby/symbol ' + emit_string(obj.to_s, level)
when Range
'!ruby/range ' + obj.to_s
when Regexp
'!ruby/regexp ' + obj.inspect
else
case
when obj.is_a?(Struct)
struct_members = {}
obj.each_pair{|k, v| struct_members[k.to_s] = v }
'!ruby/struct:' + obj.class.to_s.sub(/^(Struct::(.+)|.*)$/, '\2') + ' ' +
emit(struct_members, level + 1)
else
# serialized as a generic object
object_members = {}
obj.instance_variables.each{|k, v|
object_members[k.to_s.sub(/^@/, '')] = obj.instance_variable_get(k)
}
'!ruby/object:' + obj.class.to_s + ' ' +
emit(object_members, level + 1)
end
end
end
def emit_string(str, level)
(is_string, is_printable, is_one_line, is_one_plain_line) = string_type(str)
if is_string
if is_printable
if is_one_plain_line
emit_simple_string(str, level)
else
(is_one_line || str.length < @options[:minimum_block_length]) ?
emit_quoted_string(str, level) :
emit_block_string(str, level)
end
else
emit_quoted_string(str, level)
end
else
emit_base64_binary(str, level)
end
end
def emit_simple_string(str, level)
str
end
def emit_block_string(str, level)
str = normalize_line_break(str)
indent = s_indent(level)
indentation_indicator = (str =~ /\A /) ? indent.size.to_s : ''
str =~ /(#{REX_NORMAL_LB}*)\z/
chomping_indicator = case $1.length
when 0
'-'
when 1
''
else
'+'
end
str.chomp!
str.gsub!(/#{REX_NORMAL_LB}/) {
$1 + indent
}
'|' + indentation_indicator + chomping_indicator + "\n" + indent + str
end
def emit_quoted_string(str, level)
str = yaml_escape(normalize_line_break(str))
if (str.length < @options[:minimum_block_length])
str.gsub!(/#{REX_NORMAL_LB}/) { ESCAPE_SEQ_LB[$1] }
else
str.gsub!(/#{REX_NORMAL_LB}$/) { ESCAPE_SEQ_LB[$1] }
str.gsub!(/(#{REX_NORMAL_LB}+)(.)/) {
trail_c = $3
$1 + trail_c.sub(/([\t ])/) { ESCAPE_SEQ_WS[$1] }
}
indent = s_indent(level)
str.gsub!(/#{REX_NORMAL_LB}/) {
ESCAPE_SEQ_LB[$1] + "\\\n" + indent
}
end
'"' + str + '"'
end
def emit_base64_binary(str, level)
indent = "\n" + s_indent(level)
base64 = [str].pack('m')
'!binary |' + indent + base64.gsub(/\n(?!\z)/, indent)
end
def string_type(str)
if str.respond_to?(:encoding) && (!str.valid_encoding? || str.encoding == Encoding::ASCII_8BIT)
return false, false, false, false
end
(ucs_codes = str.unpack('U*')) rescue (
# ArgumentError -> binary data
return false, false, false, false
)
if (
@options[:printable_with_syck] &&
str =~ /\A#{REX_ANY_LB}* | #{REX_ANY_LB}*\z|#{REX_ANY_LB}{2}\z/
)
# detour Syck bug
return true, false, nil, false
end
ucs_codes.each {|ucs_code|
return true, false, nil, false unless is_printable?(ucs_code)
}
return true, true, is_one_line?(str), is_one_plain_line?(str)
end
def is_printable?(ucs_code)
# YAML 1.1 / 4.1.1.
(
[0x09, 0x0a, 0x0d, 0x85].include?(ucs_code) ||
(ucs_code <= 0x7e && ucs_code >= 0x20) ||
(ucs_code <= 0xd7ff && ucs_code >= 0xa0) ||
(ucs_code <= 0xfffd && ucs_code >= 0xe000) ||
(ucs_code <= 0x10ffff && ucs_code >= 0x10000)
) &&
!(
# treat LS/PS as non-printable characters
@options[:escape_b_specific] &&
(ucs_code == 0x2028 || ucs_code == 0x2029)
)
end
def is_one_line?(str)
str !~ /#{REX_ANY_LB}(?!\z)/
end
def is_one_plain_line?(str)
# YAML 1.1 / 4.6.11.
str !~ /^([\-\?:,\[\]\{\}\#&\*!\|>'"%@`\s]|---|\.\.\.)/ &&
str !~ /[:\#\s\[\]\{\},]/ &&
str !~ /#{REX_ANY_LB}/ &&
str !~ /^(#{REX_BOOL}|#{REX_FLOAT}|#{REX_INT}|#{REX_MERGE}
|#{REX_NULL}|#{REX_TIMESTAMP}|#{REX_VALUE})$/x
end
def s_indent(level)
# YAML 1.1 / 4.2.2.
' ' * (level * @options[:indent_size])
end
def normalize_line_break(str)
# YAML 1.1 / 4.1.4.
str.gsub(/(#{REX_CRLF}|#{REX_CR}|#{REX_NEL})/, "\n")
end
def yaml_escape(str)
# YAML 1.1 / 4.1.6.
str.gsub(/[^a-zA-Z0-9]/u) {|c|
ucs_code, = (c.unpack('U') rescue [??])
case
when ESCAPE_SEQ[c]
ESCAPE_SEQ[c]
when is_printable?(ucs_code)
c
when @options[:escape_as_utf8]
c.respond_to?(:bytes) ?
c.bytes.collect {|b| '\\x%.2x' % b }.join :
'\\x' + c.unpack('H2' * c.size).join('\\x')
when ucs_code == 0x2028 || ucs_code == 0x2029
ESCAPE_SEQ_LB[c]
when ucs_code <= 0x7f
sprintf('\\x%.2x', ucs_code)
when ucs_code <= 0xffff
sprintf('\\u%.4x', ucs_code)
else
sprintf('\\U%.8x', ucs_code)
end
}
end
module Constants
UCS_0X85 = [0x85].pack('U') # c285@UTF8 Unicode next line
UCS_0XA0 = [0xa0].pack('U') # c2a0@UTF8 Unicode non-breaking space
UCS_0X2028 = [0x2028].pack('U') # e280a8@UTF8 Unicode line separator
UCS_0X2029 = [0x2029].pack('U') # e280a9@UTF8 Unicode paragraph separator
# non-break characters
ESCAPE_SEQ = {
"\x00" => '\\0',
"\x07" => '\\a',
"\x08" => '\\b',
"\x0b" => '\\v',
"\x0c" => '\\f',
"\x1b" => '\\e',
"\"" => '\\"',
"\\" => '\\\\',
}
# non-breaking space
ESCAPE_SEQ_NS = {
UCS_0XA0 => '\\_',
}
# white spaces
ESCAPE_SEQ_WS = {
"\x09" => '\\t',
" " => '\\x20',
}
# line breaks
ESCAPE_SEQ_LB ={
"\x0a" => '\\n',
"\x0d" => '\\r',
UCS_0X85 => '\\N',
UCS_0X2028 => '\\L',
UCS_0X2029 => '\\P',
}
# regexps for line breaks
REX_LF = Regexp.escape("\x0a")
REX_CR = Regexp.escape("\x0d")
REX_CRLF = Regexp.escape("\x0d\x0a")
REX_NEL = Regexp.escape(UCS_0X85)
REX_LS = Regexp.escape(UCS_0X2028)
REX_PS = Regexp.escape(UCS_0X2029)
REX_ANY_LB = /(#{REX_LF}|#{REX_CR}|#{REX_NEL}|#{REX_LS}|#{REX_PS})/
REX_NORMAL_LB = /(#{REX_LF}|#{REX_LS}|#{REX_PS})/
# regexps for language-Independent types for YAML1.1
REX_BOOL = /
y|Y|yes|Yes|YES|n|N|no|No|NO
|true|True|TRUE|false|False|FALSE
|on|On|ON|off|Off|OFF
/x
REX_FLOAT = /
[-+]?([0-9][0-9_]*)?\.[0-9.]*([eE][-+][0-9]+)? # (base 10)
|[-+]?[0-9][0-9_]*(:[0-5]?[0-9])+\.[0-9_]* # (base 60)
|[-+]?\.(inf|Inf|INF) # (infinity)
|\.(nan|NaN|NAN) # (not a number)
/x
REX_INT = /
[-+]?0b[0-1_]+ # (base 2)
|[-+]?0[0-7_]+ # (base 8)
|[-+]?(0|[1-9][0-9_]*) # (base 10)
|[-+]?0x[0-9a-fA-F_]+ # (base 16)
|[-+]?[1-9][0-9_]*(:[0-5]?[0-9])+ # (base 60)
/x
REX_MERGE = /
<<
/x
REX_NULL = /
~ # (canonical)
|null|Null|NULL # (English)
| # (Empty)
/x
REX_TIMESTAMP = /
[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9] # (ymd)
|[0-9][0-9][0-9][0-9] # (year)
-[0-9][0-9]? # (month)
-[0-9][0-9]? # (day)
([Tt]|[ \t]+)[0-9][0-9]? # (hour)
:[0-9][0-9] # (minute)
:[0-9][0-9] # (second)
(\.[0-9]*)? # (fraction)
(([ \t]*)Z|[-+][0-9][0-9]?(:[0-9][0-9])?)? # (time zone)
/x
REX_VALUE = /
=
/x
end
include Constants
end
module Puppet::Parser::Functions
newfunction(:sorted_yaml,
:type => :rvalue,
:doc => "This function outputs yaml, but ensures the keys are sorted."
) do |arguments|
if arguments.is_a?(Array)
if arguments.size != 1
raise(Puppet::ParseError, "sorted_yaml(): Wrong number of arguments given (#{arguments.size} for 1)")
end
yaml = arguments.first
else
yaml = arguments
end
return Ya2YAML.new()._ya2yaml(yaml)
end
end
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