Class: MathTypeToMathML::CharReplacer

Inherits:
Object
  • Object
show all
Defined in:
lib/mathtype_to_mathml/char_replacer.rb

Constant Summary collapse

UNSUPPORTED = 
"Unsupported (Char)"
DEFAULT_TEXTMODE = 
"(Char)"
DEFAULT_MATHMODE = 
"<mi>(Char)<mi>"
REPLACEMENTS = 
{
  0x0021 => { # Exclamation mark
    mathmode: "<mo>(Char)</mo>"
  },
  0x0028 => { # Left parenthesis
    mathmode: "<mo stretchy='false'>(Char)</mo>"
  },
  0x0029 => { # Right parenthesis
    mathmode: "<mo stretchy='false'>(Char)</mo>"
  },
  0x002A => { # Asterisk
    mathmode: "<mo>(Char)</mo>"
  },
  0x002B => { # Plus sign
    mathmode: "<mo>(Char)</mo>"
  },
  0x002C => { # Plus sign
    mathmode: "<mo>(Char)</mo>"
  },
  0x002D => { # Hyphen-minus
    mathmode: "<mo>(Char)</mo>"
  },
  0x002E => { # Full stop
    mathmode: "<mo>(Char)</mo>"
  },
  0x002F => { # Solidus
    mathmode: "<mo>(Char)</mo>"
  },
  0x003D => { # Equals sign
    mathmode: "<mo>(Char)</mo>"
  },
  0x003F => { # Question mark
    mathmode: "<mo>(Char)</mo>"
  },
  0x005B => { # Left square bracket
    mathmode: "<mo stretchy='false'>(Char)</mo>"
  },
  0x005D => { # Right square bracket
    mathmode: "<mo stretchy='false'>(Char)</mo>"
  },
  0x007E => { # Tilda
    mathmode: "<mo>(Char)</mo>"
  },
  0x0000..0x0008 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0x000B..0x001F => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0x0030..0x0039 => { # (range) DIGITS 0-9
    mathmode: "<mn>(Char)</mn>",
    number: "(Char)",
    textmode: "(Char)"
  },
  0x003A..0x003B => { # (range) COLON, SEMICOLON
    mathmode: "<mo>(Char)</mo>",
    textmode: "(Char)"
  },
  0x0041..0x005A => { # range: Basic Latin
    mathmode: "<mi>(Char)</mi>",
    textmode: "(Char)"
  },
  0x0061..0x007A => { # range: Basic Latin
    mathmode: "<mi>(Char)</mi>",
    textmode: "(Char)"
  },
  0x0080..0x009F => { # range: C1 Controls
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0x00A0..0x00B0 => { # range: Latin-1 Supplement
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x00B2..0x00BB => { # range: Latin-1 Supplement
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x00BC..0x00BE => { # range: Latin-1 Supplement
    mathmode: "<mn>(CharHex)</mn>"
  },
  0x02C6..0x02FF => { # range: Spacing Modifier Letters
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x0300..0x036F => { # range: Combining Diacritical Marks
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2000..0x200B => { # range: Spaces
    mathmode: "<mtext>(CharHex)</mtext>"
  },
  0x200C..0x200F => { # range: Formatting Characters
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0x2010..0x2027 => { # range: General Punctuation
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2028..0x202F => { # range: Formatting Characters
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0x2030..0x2069 => { # range: General Punctuation
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x206A..0x206F => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0x2070..0x209F => { # range: Superscripts and Subscripts
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x20A0..0x20CF => { # range: Currency Symbols
    mathmode: "<mi>(CharHex)</mi>"
  },
  0x20D0..0x20FF => { # range: Combining Diacritical Marks for Symbols
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2100..0x2101 => { # range: Letterlike Symbols
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2103..0x210A => { # range: CJK Symbols and Punctuation
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2116..0x2117 => { # range: Supplemental Mathematical Operators
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x213C..0x2146 => { # range: Miscellaneous Mathematical Symbols-B
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2150..0x218F => { # range: Miscellaneous Mathematical Symbols-B
    mathmode: "<mn>(CharHex)</mn>"
  },
  0x2190..0x21FF => { # range: Miscellaneous Mathematical Symbols-B
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2200..0x2211 => { # range: Supplemental Arrows-B
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2213..0x221D => { # range: Supplemental Arrows-A
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x221F..0x22FF => { # range: Dingbats
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2300..0x23FF => { # range: Miscellaneous Symbols
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2400..0x243F => { # range: Geometric Shapes
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2500..0x257F => { # range: Block Elements
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2580..0x259F => { # range: Box Drawing
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x25A0..0x25FF => { # range: Control Pictures
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2600..0x267F => { # range: Miscellaneous Technical
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2700..0x27BF => { # range: Mathematical Operators
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x27F0..0x27FF => { # range: Mathematical Operators
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2900..0x297F => { # range: Mathematical Operators
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2980..0x29AF => { # range: Arrows
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x29B1..0x29DB => { # range: Number Forms
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x29DD..0x29FF => { # range: Letterlike Symbols
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x2A00..0x2AFF => { # range: Letterlike Symbols
    mathmode: "<mo>(CharHex)</mo>"
  },
  0x3000..0x303F => { # range: Letterlike Symbols
    mathmode: "<mo>(CharHex)</mo>"
  },
  0xE000..0xE900 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xE905..0xE90A => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xE90D..0xE921 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xE926..0xE92C => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xE92E..0xE931 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xE934..0xE939 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xE93C..0xE98E => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xE990..0xEA05 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEA08..0xEA0A => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEA0D..0xEA31 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEA36..0xEA39 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEA3C..0xEA3F => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEA46..0xEB00 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEB03..0xEB04 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEB07..0xED09 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xED14..0xED15 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xED17..0xEE03 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEE04..0xEE0C => {
    textmode: UNSUPPORTED
  },
  0xEE0D..0xEE18 => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEE1A..0xEEFF => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xEF09..0xEFFF => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xF000..0xF033 => {
    textmode: UNSUPPORTED
  },
  0xF034..0xF07F => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xF080..0xF0B3 => {
    textmode: UNSUPPORTED
  },
  0xF0B4..0xF0BF => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xF0C0..0xF0C9 => {
    textmode: UNSUPPORTED
  },
  0xF0CA..0xF0FF => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xF100..0xF133 => {
    textmode: UNSUPPORTED
  },
  0xF134..0xF8FF => {
    mathmode: UNSUPPORTED,
    textmode: UNSUPPORTED
  },
  0xFB00..0xFB4F => { # range: Alphabetic Presentation Forms
    mathmode: "<mtext>(CharHex)</mtext>"
  },
  0xFE35..0xFE4F => { # range: CJK Compatibility Forms
    mathmode: "<mo>(CharHex)</mo>"
  }
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mathtype) ⇒ CharReplacer

Returns a new instance of CharReplacer.



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# File 'lib/mathtype_to_mathml/char_replacer.rb', line 326

def initialize(mathtype)
  @mathtype = mathtype
end

Instance Attribute Details

#mathtype ⇒ Object

Returns the value of attribute mathtype.



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# File 'lib/mathtype_to_mathml/char_replacer.rb', line 324

def mathtype
  @mathtype
end

Instance Method Details

#replace ⇒ Object 



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# File 'lib/mathtype_to_mathml/char_replacer.rb', line 330

def replace
  @mathtype.css("char").each do |char|
    replacement = REPLACEMENTS.find do |range, _|
      range === char.xpath("mt_code_value").text.hex
    end
    replace_character(replacement, char) if replacement
  end

  # Reparse XML to merge adjacent text nodes
  @mathtype = Nokogiri::XML(@mathtype.to_xml)
end

#replace_character(replacement, char) ⇒ Object 



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# File 'lib/mathtype_to_mathml/char_replacer.rb', line 342

def replace_character(replacement, char)
  if char.xpath("variation = 'textmode'")
    replacement = replacement[1][:textmode] || DEFAULT_TEXTMODE
    xml = replacement_xml(replacement, char)
  else
    replacement = replacement[1][:mathmode] || DEFAULT_MATHMODE
    xml = replacement_xml(replacement, char)
  end

  char.replace Nokogiri::HTML::DocumentFragment.parse(xml)
end

#replacement_xml(string, char) ⇒ Object 



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# File 'lib/mathtype_to_mathml/char_replacer.rb', line 354

def replacement_xml(string, char)
  string.gsub("(Char)") do
    char.xpath("mt_code_value").text.hex.chr("UTF-8") # e.g. π
  end.gsub("(CharHex)") do
    "&#x#{char.xpath('mt_code_value').text[2..-1]};" # e.g. &#x2229;
  end
end