/++
  Author: Aziz Köksal
  License: GPL3
+/
module dil.HtmlEntities;

private const dchar[char[]] entities_table;

static this()
{
  entities_table = [
    "Aacute"[] : '\u00C1',
    "aacute" : '\u00E1',
    "Acirc" : '\u00C2',
    "acirc" : '\u00E2',
    "acute" : '\u00B4',
    "AElig" : '\u00C6',
    "aelig" : '\u00E6',
    "Agrave" : '\u00C0',
    "agrave" : '\u00E0',
    "alefsym" : '\u2135',
    "Alpha" : '\u0391',
    "alpha" : '\u03B1',
    "amp" : '\u0026',
    "and" : '\u2227',
    "ang" : '\u2220',
    "Aring" : '\u00C5',
    "aring" : '\u00E5',
    "asymp" : '\u2248',
    "Atilde" : '\u00C3',
    "atilde" : '\u00E3',
    "Auml" : '\u00C4',
    "auml" : '\u00E4',
    "bdquo" : '\u201E',
    "Beta" : '\u0392',
    "beta" : '\u03B2',
    "brvbar" : '\u00A6',
    "bull" : '\u2022',
    "cap" : '\u2229',
    "Ccedil" : '\u00C7',
    "ccedil" : '\u00E7',
    "cedil" : '\u00B8',
    "cent" : '\u00A2',
    "Chi" : '\u03A7',
    "chi" : '\u03C7',
    "circ" : '\u02C6',
    "clubs" : '\u2663',
    "cong" : '\u2245',
    "copy" : '\u00A9',
    "crarr" : '\u21B5',
    "cup" : '\u222A',
    "curren" : '\u00A4',
    "Dagger" : '\u2021',
    "dagger" : '\u2020',
    "dArr" : '\u21D3',
    "darr" : '\u2193',
    "deg" : '\u00B0',
    "Delta" : '\u0394',
    "delta" : '\u03B4',
    "diams" : '\u2666',
    "divide" : '\u00F7',
    "Eacute" : '\u00C9',
    "eacute" : '\u00E9',
    "Ecirc" : '\u00CA',
    "ecirc" : '\u00EA',
    "Egrave" : '\u00C8',
    "egrave" : '\u00E8',
    "empty" : '\u2205',
    "emsp" : '\u2003',
    "ensp" : '\u2002',
    "Epsilon" : '\u0395',
    "epsilon" : '\u03B5',
    "equiv" : '\u2261',
    "Eta" : '\u0397',
    "eta" : '\u03B7',
    "ETH" : '\u00D0',
    "eth" : '\u00F0',
    "Euml" : '\u00CB',
    "euml" : '\u00EB',
    "euro" : '\u20AC',
    "exist" : '\u2203',
    "fnof" : '\u0192',
    "forall" : '\u2200',
    "frac12" : '\u00BD',
    "frac14" : '\u00BC',
    "frac34" : '\u00BE',
    "frasl" : '\u2044',
    "Gamma" : '\u0393',
    "gamma" : '\u03B3',
    "ge" : '\u2265',
    "gt" : '\u003E',
    "hArr" : '\u21D4',
    "harr" : '\u2194',
    "hearts" : '\u2665',
    "hellip" : '\u2026',
    "Iacute" : '\u00CD',
    "iacute" : '\u00ED',
    "Icirc" : '\u00CE',
    "icirc" : '\u00EE',
    "iexcl" : '\u00A1',
    "Igrave" : '\u00CC',
    "igrave" : '\u00EC',
    "image" : '\u2111',
    "infin" : '\u221E',
    "int" : '\u222B',
    "Iota" : '\u0399',
    "iota" : '\u03B9',
    "iquest" : '\u00BF',
    "isin" : '\u2208',
    "Iuml" : '\u00CF',
    "iuml" : '\u00EF',
    "Kappa" : '\u039A',
    "kappa" : '\u03BA',
    "Lambda" : '\u039B',
    "lambda" : '\u03BB',
    "lang" : '\u2329',
    "laquo" : '\u00AB',
    "lArr" : '\u21D0',
    "larr" : '\u2190',
    "lceil" : '\u2308',
    "ldquo" : '\u201C',
    "le" : '\u2264',
    "lfloor" : '\u230A',
    "lowast" : '\u2217',
    "loz" : '\u25CA',
    "lrm" : '\u200E',
    "lsaquo" : '\u2039',
    "lsquo" : '\u2018',
    "lt" : '\u003C',
    "macr" : '\u00AF',
    "mdash" : '\u2014',
    "micro" : '\u00B5',
    "middot" : '\u00B7',
    "minus" : '\u2212',
    "Mu" : '\u039C',
    "mu" : '\u03BC',
    "nabla" : '\u2207',
    "nbsp" : '\u00A0',
    "ndash" : '\u2013',
    "ne" : '\u2260',
    "ni" : '\u220B',
    "not" : '\u00AC',
    "notin" : '\u2209',
    "nsub" : '\u2284',
    "Ntilde" : '\u00D1',
    "ntilde" : '\u00F1',
    "Nu" : '\u039D',
    "nu" : '\u03BD',
    "Oacute" : '\u00D3',
    "oacute" : '\u00F3',
    "Ocirc" : '\u00D4',
    "ocirc" : '\u00F4',
    "OElig" : '\u0152',
    "oelig" : '\u0153',
    "Ograve" : '\u00D2',
    "ograve" : '\u00F2',
    "oline" : '\u203E',
    "Omega" : '\u03A9',
    "omega" : '\u03C9',
    "Omicron" : '\u039F',
    "omicron" : '\u03BF',
    "oplus" : '\u2295',
    "or" : '\u2228',
    "ordf" : '\u00AA',
    "ordm" : '\u00BA',
    "Oslash" : '\u00D8',
    "oslash" : '\u00F8',
    "Otilde" : '\u00D5',
    "otilde" : '\u00F5',
    "otimes" : '\u2297',
    "Ouml" : '\u00D6',
    "ouml" : '\u00F6',
    "para" : '\u00B6',
    "part" : '\u2202',
    "permil" : '\u2030',
    "perp" : '\u22A5',
    "Phi" : '\u03A6',
    "phi" : '\u03C6',
    "Pi" : '\u03A0',
    "pi" : '\u03C0',
    "piv" : '\u03D6',
    "plusmn" : '\u00B1',
    "pound" : '\u00A3',
    "Prime" : '\u2033',
    "prime" : '\u2032',
    "prod" : '\u220F',
    "prop" : '\u221D',
    "Psi" : '\u03A8',
    "psi" : '\u03C8',
    "quot" : '\u0022',
    "radic" : '\u221A',
    "rang" : '\u232A',
    "raquo" : '\u00BB',
    "rArr" : '\u21D2',
    "rarr" : '\u2192',
    "rceil" : '\u2309',
    "rdquo" : '\u201D',
    "real" : '\u211C',
    "reg" : '\u00AE',
    "rfloor" : '\u230B',
    "Rho" : '\u03A1',
    "rho" : '\u03C1',
    "rlm" : '\u200F',
    "rsaquo" : '\u203A',
    "rsquo" : '\u2019',
    "sbquo" : '\u201A',
    "Scaron" : '\u0160',
    "scaron" : '\u0161',
    "sdot" : '\u22C5',
    "sect" : '\u00A7',
    "shy" : '\u00AD',
    "Sigma" : '\u03A3',
    "sigma" : '\u03C3',
    "sigmaf" : '\u03C2',
    "sim" : '\u223C',
    "spades" : '\u2660',
    "sub" : '\u2282',
    "sube" : '\u2286',
    "sum" : '\u2211',
    "sup" : '\u2283',
    "sup1" : '\u00B9',
    "sup2" : '\u00B2',
    "sup3" : '\u00B3',
    "supe" : '\u2287',
    "szlig" : '\u00DF',
    "Tau" : '\u03A4',
    "tau" : '\u03C4',
    "there4" : '\u2234',
    "Theta" : '\u0398',
    "theta" : '\u03B8',
    "thetasym" : '\u03D1',
    "thinsp" : '\u2009',
    "THORN" : '\u00DE',
    "thorn" : '\u00FE',
    "tilde" : '\u02DC',
    "times" : '\u00D7',
    "trade" : '\u2122',
    "Uacute" : '\u00DA',
    "uacute" : '\u00FA',
    "uArr" : '\u21D1',
    "uarr" : '\u2191',
    "Ucirc" : '\u00DB',
    "ucirc" : '\u00FB',
    "Ugrave" : '\u00D9',
    "ugrave" : '\u00F9',
    "uml" : '\u00A8',
    "upsih" : '\u03D2',
    "Upsilon" : '\u03A5',
    "upsilon" : '\u03C5',
    "Uuml" : '\u00DC',
    "uuml" : '\u00FC',
    "weierp" : '\u2118',
    "Xi" : '\u039E',
    "xi" : '\u03BE',
    "Yacute" : '\u00DD',
    "yacute" : '\u00FD',
    "yen" : '\u00A5',
    "Yuml" : '\u0178',
    "yuml" : '\u00FF',
    "Zeta" : '\u0396',
    "zeta" : '\u03B6',
    "zwj" : '\u200D',
    "zwnj" : '\u200C'
  ];
}

/++
  Converts a named HTML entity into its equivalent Unicode codepoint.
  Returns 0xFFFF if entity doesn't exist.
+/
dchar entity2Unicode(char[] entity)
{
  auto d = entity in entities_table;
  if (d)
    return *d;
  return 0xFFFF;
}