Class: MaRuKu::In::Markdown::SpanLevelParser::CharSourceManual

Inherits:
Object
  • Object
show all
Includes:
MaRuKu::In::Markdown::SpanLevelParser, Strings
Defined in:
lib/maruku/input/charsource.rb,
lib/maruku/input/charsource.rb

Overview

a string scanner coded by me

Constant Summary

Constants included from MaRuKu::In::Markdown::SpanLevelParser

CharSource, Close_class, EscapedCharInInlineCode, EscapedCharInQuotes, EscapedCharInText, Punct_class, R_REF_ID, Rules, SPACE

Constants included from Strings

Strings::Abbreviation, Strings::AttributeDefinitionList, Strings::Definition, Strings::EMailAddress, Strings::FootnoteText, Strings::HeaderWithAttributes, Strings::HeaderWithId, Strings::IncompleteLink, Strings::InlineAttributeList, Strings::LinkRegex, Strings::MightBeTableHeader, Strings::Sep, Strings::TabSize, Strings::TableSeparator, Strings::URL

Instance Method Summary collapse

Methods included from MaRuKu::In::Markdown::SpanLevelParser

#apply_one_rule, #describe_pos, #educate, #extension_meta, #interpret_extension, #is_ial, #md_al, #merge_ial, #parse_lines_as_span, #parse_span_better, #read_attribute_list, #read_em, #read_email_el, #read_emstrong, #read_footnote_ref, #read_image, #read_inline_code, #read_inline_html, #read_link, #read_quoted, #read_quoted_or_unquoted, #read_ref_id, #read_simple, #read_span, #read_strong, #read_url, #read_url_el, #read_xml_instr_span, #unit_tests_for_attribute_lists

Methods included from Helpers

#md_abbr, #md_abbr_def, #md_ald, #md_br, #md_code, #md_codeblock, #md_el, #md_em, #md_email, #md_emstrong, #md_entity, #md_foot_ref, #md_footnote, #md_header, #md_hrule, #md_html, #md_ial, #md_im_image, #md_im_link, #md_image, #md_li, #md_link, #md_par, #md_quote, #md_ref_def, #md_strong, #md_url, #md_xml_instr

Methods included from Strings

#add_tabs, #dbg_describe_ary, #force_linebreak?, #line_md_type, #normalize_key_and_value, #num_leading_hashes, #number_of_leading_spaces, #parse_email_headers, #spaces_before_first_char, #split_lines, #strip_hashes, #strip_indent, #unquote

Constructor Details

#initialize(s, parent = nil) ⇒ CharSourceManual

Returns a new instance of CharSourceManual.



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# File 'lib/maruku/input/charsource.rb', line 44

def initialize(s, parent=nil)
  raise "Passed #{s.class}" if not s.kind_of? String
  @buffer = s
  @buffer_index = 0
  @parent = parent
end

Instance Method Details

#consume_whitespace ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 123

def consume_whitespace
  while c = cur_char 
    if (c == 32 || c == ?\t)
#       puts "ignoring #{c}"
      ignore_char
    else
#       puts "#{c} is not ws: "<<c
      break
    end
  end
end

#cur_char ⇒ Object

Return current char as a FixNum (or nil).



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# File 'lib/maruku/input/charsource.rb', line 52

def cur_char; @buffer[@buffer_index]   end

#cur_chars(n) ⇒ Object

Return the next n chars as a String.



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# File 'lib/maruku/input/charsource.rb', line 55

def cur_chars(n); @buffer[@buffer_index,n]  end

#cur_chars_are(string) ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 80

def cur_chars_are(string)
  # There is a bug here
  if false
    r2 = /^.{#{@buffer_index}}#{Regexp.escape string}/m
    @buffer =~ r2
  else
    cur_chars(string.size) == string
  end
end

#current_remaining_buffer ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 76

def current_remaining_buffer
  @buffer[@buffer_index, @buffer.size-@buffer_index]
end

#describe ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 144

def describe
  s = describe_pos(@buffer, @buffer_index)
  if @parent
    s += "\n\n" + @parent.describe
  end
  s
end

#ignore_char ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 66

def ignore_char
  @buffer_index+=1
  nil
end

#ignore_chars(n) ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 71

def ignore_chars(n)
  @buffer_index+=n
  nil
end

#next_char ⇒ Object

Return the char after current char as a FixNum (or nil).



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# File 'lib/maruku/input/charsource.rb', line 58

def next_char; @buffer[@buffer_index+1] end

#next_matches(r) ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 90

def next_matches(r)
  r2 = /^.{#{@buffer_index}}#{r}/m
  md = r2.match @buffer
  return !!md
end

#read_regexp(r) ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 112

def read_regexp(r)
  r2 = /^#{r}/
  rest = current_remaining_buffer
  m = r2.match(rest)
  if m
    @buffer_index += m.to_s.size
#       puts "#{r} matched #{rest.inspect}: #{m.to_s.inspect}"
  end
  return m
end

#read_regexp3(r) ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 96

def read_regexp3(r)
  r2 = /^.{#{@buffer_index}}#{r}/m
  m = r2.match @buffer
  if m
    consumed = m.to_s.size - @buffer_index
#     puts "Consumed #{consumed} chars (entire is #{m.to_s.inspect})"
    ignore_chars consumed
  else
#     puts "Could not read regexp #{r2.inspect} from buffer "+
#     " index=#{@buffer_index}"
#     puts "Cur chars = #{cur_chars(20).inspect}"
#     puts "Matches? = #{cur_chars(20) =~ r}"
  end
  m
end

#read_text_chars(out) ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 135

def read_text_chars(out)
  s = @buffer.size; c=nil
  while @buffer_index < s && (c=@buffer[@buffer_index]) &&
     ((c>=?a && c<=?z) || (c>=?A && c<=?Z))
      out << c
      @buffer_index += 1
  end
end

#shift_char ⇒ Object 



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# File 'lib/maruku/input/charsource.rb', line 60

def shift_char
  c = @buffer[@buffer_index]
  @buffer_index+=1
  c
end