Class: String

Inherits:
Object show all
Defined in:
lib/sxp/extensions.rb

Overview

Extensions for Ruby’s String class.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#quote_style ⇒ :dquote, :squote

Record quote style used when parsing



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# File 'lib/sxp/extensions.rb', line 89

def quote_style
  @quote_style
end

Instance Method Details

#as_dquote? ⇒ Boolean

Render string using single quotes



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# File 'lib/sxp/extensions.rb', line 95

def as_dquote?; quote_style != :squote; end

#as_squote? ⇒ Boolean

Render string using double quotes



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# File 'lib/sxp/extensions.rb', line 92

def as_squote?; quote_style == :squote; end

#to_sxp(**options) ⇒ String

Returns the SXP representation of this object. Uses SPARQL-like escaping. Uses any recorded quote style from an originally parsed string.



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# File 'lib/sxp/extensions.rb', line 62

def to_sxp(**options)
  buffer = ""
  each_char do |u|
    buffer << case u.ord
    when (0x00..0x07) then sprintf("\\u%04X", u.ord)
    when (0x08)       then '\b'
    when (0x09)       then '\t'
    when (0x0A)       then '\n'
    when (0x0C)       then '\f'
    when (0x0D)       then '\r'
    when (0x0E..0x1F) then sprintf("\\u%04X", u.ord)
    when (0x22)       then as_dquote? ? '\"' : '"'
    when (0x27)       then as_squote? ? "\'" : "'"
    when (0x5C)       then '\\\\'
    when (0x7F)       then sprintf("\\u%04X", u.ord)
    else u.chr
    end
  end
  if as_dquote?
    '"' + buffer + '"'
  else
    "'" + buffer + "'"
  end
end