Class: ZAML

Inherits:
Object show all
Defined in:
lib/icss/serialization/zaml.rb

Defined Under Namespace

Classes: Comment, Label, Padding

Constant Summary collapse

VERSION = 
"0.1.4m"
NUM_RE = 
'[-+]?(0x)?\d+\.?\d*'
SIMPLE_STRING_RE =

unless defined?(::ZAML::SIMPLE_STRING_RE)

/\A(true|false|yes|no|on|null|off|#{ZAML::NUM_RE}(:#{ZAML::NUM_RE})*|!|=|~|>|\||\n+)\z/io
ZAML_ESCAPES = 
%w{\x00 \x01 \x02 \x03 \x04 \x05 \x06 \a \x08 \t \n \v \f \r \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 \x1a \e \x1c \x1d \x1e \x1f }
HI_BIT_CHARS = 
'\x80-\xFF'
HI_BIT_CHARS_RE = 
/([#{ZAML::HI_BIT_CHARS}])/o
EXTENDED_CHARS_RE = 
/[\x00-\x08\x0B\x0C\x0E-\x1F]/o

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ ZAML

Instance Methods



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# File 'lib/icss/serialization/zaml.rb', line 35

def initialize(options={})
  reset!
  self.valign = options[:valign]
end

Instance Attribute Details

#indent ⇒ Object

Returns the value of attribute indent.



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# File 'lib/icss/serialization/zaml.rb', line 19

def indent
  @indent
end

#result ⇒ Object

Returns the value of attribute result.



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# File 'lib/icss/serialization/zaml.rb', line 19

def result
  @result
end

#valign ⇒ Object

line up simple value tokens at this vertical column



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# File 'lib/icss/serialization/zaml.rb', line 21

def valign
  @valign
end

Class Method Details

.dump(stuff, where = '', options = {}) ⇒ Object

Class Methods



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# File 'lib/icss/serialization/zaml.rb', line 26

def self.dump(stuff, where='', options={})
  z = self.new(options)
  stuff.to_zaml(z)
  where << z.to_s
end

.padding(nlines) ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 112

def self.padding(nlines)
  Padding.new(nlines)
end

Instance Method Details

#emit(s) ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 69

def emit(s)
  @result << s
  @recent_nl = false unless s.kind_of?(Label)
  self.to_s
end

#first_time_only(obj) ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 89

def first_time_only(obj)
  if label = Label.for(obj)
    emit(label.reference)
  else
    if @structured_key_prefix and not obj.is_a? String
      emit(@structured_key_prefix)
      @structured_key_prefix = nil
    end
    emit(new_label_for(obj))
    yield
  end
  self.to_s
end

#inspect ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 106

def inspect
  res = to_s.inspect
  res = res[0..29]+"..."+res[-20..-1] if res.length > 50
  %Q{\#<ZAML ind=#{@indent.inspect} pfx=#{@structured_key_prefix} result='#{res}'>}
end

#nested(tail = ' ') ⇒ Object

for all code within the block, the cursor supplies



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# File 'lib/icss/serialization/zaml.rb', line 49

def nested(tail='  ')
  old_indent = @indent
  # @indent    = "#{@indent || "\n"}#{tail}"
  @indent    = @indent ? "#{@indent}#{tail}" : "\n"
  yield
  @indent    = old_indent
end

#new_label_for(obj) ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 86

def new_label_for(obj)
  Label.new(obj,(Hash === obj || Array === obj) ? "#{@indent || "\n"}  " : ' ')
end

#nl(s = '') ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 74

def nl(s='')
  emit(@indent || "\n") unless @recent_nl
  emit(s)
  @recent_nl = true
end

#no_comment(elt) ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 116

def no_comment(elt)
  if elt.is_a?(ZAML::Comment) || elt.is_a?(ZAML::Padding)
    elt.to_zaml(self)
  else
    yield
  end
end

#prefix_structured_keys(x) ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 79

def prefix_structured_keys(x)
  @structured_key_prefix = x
  yield
  nl unless @structured_key_prefix
  @structured_key_prefix = nil
end

#reset! ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 40

def reset!
  @result = []
  @indent = nil
  @structured_key_prefix = nil
  Label.counter_reset
  emit('--- ')
end

#to_s ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 103

def to_s
  @result.join.tap{|s| s << "\n" if s[-1..-1] != "\n" }
end

#vpad(sep, key) ⇒ Object 



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# File 'lib/icss/serialization/zaml.rb', line 57

def vpad(sep, key)
  return emit("#{sep} ") unless valign
  if    key.is_a?(Symbol)  then str = key.inspect
  elsif key.is_a?(String)  then str = key
  elsif key.is_a?(Numeric) then str = key.to_s
  else  return emit("#{sep} ") ; end
  keylen = ((@indent||"\n").length - 1) + str.length + sep.length
  vlen   = valign - keylen
  pad  = (vlen > 1) ? (" "*vlen) : " "
  emit(sep+pad)
end