Class: ElasticTabstops::Formatter

Inherits:
Object
  • Object
show all
Defined in:
lib/elastic_tabstops/formatter.rb

Instance Method Summary collapse

Constructor Details

#initialize(output_stream, tabchar: "\t", padchar: ' ') ⇒ Formatter

Returns a new instance of Formatter.



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# File 'lib/elastic_tabstops/formatter.rb', line 4

def initialize(output_stream, tabchar: "\t", padchar: ' ')
  @outstream = output_stream
  @lines = []
  @ctrls = []
  @tabchar = tabchar
  @padchar = padchar
  @split_re = /(?<=#{Regexp.escape(tabchar)})/
end

Instance Method Details

#line(text) ⇒ Object

PRECONDITION: text == ” || /A.*r?nz/ === text In the regex above, ‘A` matches beginning-of-string, and `z` matches end-of-string. The absence of a multiline modifier (as in /abc/m) means `.` does NOT match newline.

So, in English: ‘text` is a string, and it is either the empty string, or it is a sequence of non-newline characters terminated by a newline.



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# File 'lib/elastic_tabstops/formatter.rb', line 20

def line(text)
  texts = text.split(@split_re)

  # Ensure that a non-tab-terminated text exists at the end of texts
  texts << '' if texts.empty? || texts[-1][-1] == @tabchar

  emit_line_of_cells(texts)
end