package org

import (
	"sort"
	"strings"
)

var htmlEntityReplacer *strings.Replacer

func init() {
	htmlEntities = append(htmlEntities,
		[]string{"---", "—"},
		[]string{"--", "–"},
		[]string{"...", "…"},
	)
	// replace longer entities first to prevent partial replacements (e.g. \angle as \ang + le)
	sort.Slice(htmlEntities, func(i, j int) bool {
		return len(htmlEntities[i][0]) > len(htmlEntities[j][0])
	})
	xs := make([]string, len(htmlEntities)*2)
	for _, kv := range htmlEntities {
		// replace both \<entity> and \<entity>{}
		xs = append(xs, kv[0]+"{}", kv[1], kv[0], kv[1])
	}
	htmlEntityReplacer = strings.NewReplacer(xs...)
}

/*
Generated & copied over using the following elisp
(Setting up go generate seems like a waste for now - I call YAGNI on that one)

(insert (mapconcat
         (lambda (entity) (concat "{`\\" (car entity) "`, `" (nth 6 entity) "`}")) ; entity -> utf8
         (cl-remove-if-not 'listp org-entities)
         ",\n"))
*/

var htmlEntities = [][]string{
	{`\Agrave`, `À`},
	{`\agrave`, `à`},
	{`\Aacute`, `Á`},
	{`\aacute`, `á`},
	{`\Acirc`, `Â`},
	{`\acirc`, `â`},
	{`\Amacr`, `Ã`},
	{`\amacr`, `ã`},
	{`\Atilde`, `Ã`},
	{`\atilde`, `ã`},
	{`\Auml`, `Ä`},
	{`\auml`, `ä`},
	{`\Aring`, `Å`},
	{`\AA`, `Å`},
	{`\aring`, `å`},
	{`\AElig`, `Æ`},
	{`\aelig`, `æ`},
	{`\Ccedil`, `Ç`},
	{`\ccedil`, `ç`},
	{`\Egrave`, `È`},
	{`\egrave`, `è`},
	{`\Eacute`, `É`},
	{`\eacute`, `é`},
	{`\Ecirc`, `Ê`},
	{`\ecirc`, `ê`},
	{`\Euml`, `Ë`},
	{`\euml`, `ë`},
	{`\Igrave`, `Ì`},
	{`\igrave`, `ì`},
	{`\Iacute`, `Í`},
	{`\iacute`, `í`},
	{`\Idot`, `İ`},
	{`\inodot`, `ı`},
	{`\Icirc`, `Î`},
	{`\icirc`, `î`},
	{`\Iuml`, `Ï`},
	{`\iuml`, `ï`},
	{`\Ntilde`, `Ñ`},
	{`\ntilde`, `ñ`},
	{`\Ograve`, `Ò`},
	{`\ograve`, `ò`},
	{`\Oacute`, `Ó`},
	{`\oacute`, `ó`},
	{`\Ocirc`, `Ô`},
	{`\ocirc`, `ô`},
	{`\Otilde`, `Õ`},
	{`\otilde`, `õ`},
	{`\Ouml`, `Ö`},
	{`\ouml`, `ö`},
	{`\Oslash`, `Ø`},
	{`\oslash`, `ø`},
	{`\OElig`, `Œ`},
	{`\oelig`, `œ`},
	{`\Scaron`, `Š`},
	{`\scaron`, `š`},
	{`\szlig`, `ß`},
	{`\Ugrave`, `Ù`},
	{`\ugrave`, `ù`},
	{`\Uacute`, `Ú`},
	{`\uacute`, `ú`},
	{`\Ucirc`, `Û`},
	{`\ucirc`, `û`},
	{`\Uuml`, `Ü`},
	{`\uuml`, `ü`},
	{`\Yacute`, `Ý`},
	{`\yacute`, `ý`},
	{`\Yuml`, `Ÿ`},
	{`\yuml`, `ÿ`},
	{`\fnof`, `ƒ`},
	{`\real`, `ℜ`},
	{`\image`, `ℑ`},
	{`\weierp`, `℘`},
	{`\ell`, `ℓ`},
	{`\imath`, `ı`},
	{`\jmath`, `ȷ`},
	{`\Alpha`, `Α`},
	{`\alpha`, `α`},
	{`\Beta`, `Β`},
	{`\beta`, `β`},
	{`\Gamma`, `Γ`},
	{`\gamma`, `γ`},
	{`\Delta`, `Δ`},
	{`\delta`, `δ`},
	{`\Epsilon`, `Ε`},
	{`\epsilon`, `ε`},
	{`\varepsilon`, `ε`},
	{`\Zeta`, `Ζ`},
	{`\zeta`, `ζ`},
	{`\Eta`, `Η`},
	{`\eta`, `η`},
	{`\Theta`, `Θ`},
	{`\theta`, `θ`},
	{`\thetasym`, `ϑ`},
	{`\vartheta`, `ϑ`},
	{`\Iota`, `Ι`},
	{`\iota`, `ι`},
	{`\Kappa`, `Κ`},
	{`\kappa`, `κ`},
	{`\Lambda`, `Λ`},
	{`\lambda`, `λ`},
	{`\Mu`, `Μ`},
	{`\mu`, `μ`},
	{`\nu`, `ν`},
	{`\Nu`, `Ν`},
	{`\Xi`, `Ξ`},
	{`\xi`, `ξ`},
	{`\Omicron`, `Ο`},
	{`\omicron`, `ο`},
	{`\Pi`, `Π`},
	{`\pi`, `π`},
	{`\Rho`, `Ρ`},
	{`\rho`, `ρ`},
	{`\Sigma`, `Σ`},
	{`\sigma`, `σ`},
	{`\sigmaf`, `ς`},
	{`\varsigma`, `ς`},
	{`\Tau`, `Τ`},
	{`\Upsilon`, `Υ`},
	{`\upsih`, `ϒ`},
	{`\upsilon`, `υ`},
	{`\Phi`, `Φ`},
	{`\phi`, `ɸ`},
	{`\varphi`, `φ`},
	{`\Chi`, `Χ`},
	{`\chi`, `χ`},
	{`\acutex`, `𝑥́`},
	{`\Psi`, `Ψ`},
	{`\psi`, `ψ`},
	{`\tau`, `τ`},
	{`\Omega`, `Ω`},
	{`\omega`, `ω`},
	{`\piv`, `ϖ`},
	{`\varpi`, `ϖ`},
	{`\partial`, `∂`},
	{`\alefsym`, `ℵ`},
	{`\aleph`, `ℵ`},
	{`\gimel`, `ℷ`},
	{`\beth`, `ב`},
	{`\dalet`, `ד`},
	{`\ETH`, `Ð`},
	{`\eth`, `ð`},
	{`\THORN`, `Þ`},
	{`\thorn`, `þ`},
	{`\dots`, `…`},
	{`\cdots`, `⋯`},
	{`\hellip`, `…`},
	{`\middot`, `·`},
	{`\iexcl`, `¡`},
	{`\iquest`, `¿`},
	{`\shy`, ``},
	{`\ndash`, `–`},
	{`\mdash`, `—`},
	{`\quot`, `"`},
	{`\acute`, `´`},
	{`\ldquo`, `“`},
	{`\rdquo`, `”`},
	{`\bdquo`, `„`},
	{`\lsquo`, `‘`},
	{`\rsquo`, `’`},
	{`\sbquo`, `‚`},
	{`\laquo`, `«`},
	{`\raquo`, `»`},
	{`\lsaquo`, `‹`},
	{`\rsaquo`, `›`},
	{`\circ`, `∘`},
	{`\vert`, `|`},
	{`\vbar`, `|`},
	{`\brvbar`, `¦`},
	{`\S`, `§`},
	{`\sect`, `§`},
	{`\amp`, `&`},
	{`\lt`, `<`},
	{`\gt`, `>`},
	{`\tilde`, `~`},
	{`\slash`, `/`},
	{`\plus`, `+`},
	{`\under`, `_`},
	{`\equal`, `=`},
	{`\asciicirc`, `^`},
	{`\dagger`, `†`},
	{`\dag`, `†`},
	{`\Dagger`, `‡`},
	{`\ddag`, `‡`},
	{`\nbsp`, ` `},
	{`\ensp`, ` `},
	{`\emsp`, ` `},
	{`\thinsp`, ` `},
	{`\curren`, `¤`},
	{`\cent`, `¢`},
	{`\pound`, `£`},
	{`\yen`, `¥`},
	{`\euro`, `€`},
	{`\EUR`, `€`},
	{`\dollar`, `$`},
	{`\USD`, `$`},
	{`\copy`, `©`},
	{`\reg`, `®`},
	{`\trade`, `™`},
	{`\minus`, `−`},
	{`\pm`, `±`},
	{`\plusmn`, `±`},
	{`\times`, `×`},
	{`\frasl`, `⁄`},
	{`\colon`, `:`},
	{`\div`, `÷`},
	{`\frac12`, `½`},
	{`\frac14`, `¼`},
	{`\frac34`, `¾`},
	{`\permil`, `‰`},
	{`\sup1`, `¹`},
	{`\sup2`, `²`},
	{`\sup3`, `³`},
	{`\radic`, `√`},
	{`\sum`, `∑`},
	{`\prod`, `∏`},
	{`\micro`, `µ`},
	{`\macr`, `¯`},
	{`\deg`, `°`},
	{`\prime`, `′`},
	{`\Prime`, `″`},
	{`\infin`, `∞`},
	{`\infty`, `∞`},
	{`\prop`, `∝`},
	{`\propto`, `∝`},
	{`\not`, `¬`},
	{`\neg`, `¬`},
	{`\land`, `∧`},
	{`\wedge`, `∧`},
	{`\lor`, `∨`},
	{`\vee`, `∨`},
	{`\cap`, `∩`},
	{`\cup`, `∪`},
	{`\smile`, `⌣`},
	{`\frown`, `⌢`},
	{`\int`, `∫`},
	{`\therefore`, `∴`},
	{`\there4`, `∴`},
	{`\because`, `∵`},
	{`\sim`, `∼`},
	{`\cong`, `≅`},
	{`\simeq`, `≅`},
	{`\asymp`, `≈`},
	{`\approx`, `≈`},
	{`\ne`, `≠`},
	{`\neq`, `≠`},
	{`\equiv`, `≡`},
	{`\triangleq`, `≜`},
	{`\le`, `≤`},
	{`\leq`, `≤`},
	{`\ge`, `≥`},
	{`\geq`, `≥`},
	{`\lessgtr`, `≶`},
	{`\lesseqgtr`, `⋚`},
	{`\ll`, `≪`},
	{`\Ll`, `⋘`},
	{`\lll`, `⋘`},
	{`\gg`, `≫`},
	{`\Gg`, `⋙`},
	{`\ggg`, `⋙`},
	{`\prec`, `≺`},
	{`\preceq`, `≼`},
	{`\preccurlyeq`, `≼`},
	{`\succ`, `≻`},
	{`\succeq`, `≽`},
	{`\succcurlyeq`, `≽`},
	{`\sub`, `⊂`},
	{`\subset`, `⊂`},
	{`\sup`, `⊃`},
	{`\supset`, `⊃`},
	{`\nsub`, `⊄`},
	{`\sube`, `⊆`},
	{`\nsup`, `⊅`},
	{`\supe`, `⊇`},
	{`\setminus`, `⧵`},
	{`\forall`, `∀`},
	{`\exist`, `∃`},
	{`\exists`, `∃`},
	{`\nexist`, `∄`},
	{`\nexists`, `∄`},
	{`\empty`, `∅`},
	{`\emptyset`, `∅`},
	{`\isin`, `∈`},
	{`\in`, `∈`},
	{`\notin`, `∉`},
	{`\ni`, `∋`},
	{`\nabla`, `∇`},
	{`\ang`, `∠`},
	{`\angle`, `∠`},
	{`\perp`, `⊥`},
	{`\parallel`, `∥`},
	{`\sdot`, `⋅`},
	{`\cdot`, `⋅`},
	{`\lceil`, `⌈`},
	{`\rceil`, `⌉`},
	{`\lfloor`, `⌊`},
	{`\rfloor`, `⌋`},
	{`\lang`, `⟨`},
	{`\rang`, `⟩`},
	{`\langle`, `⟨`},
	{`\rangle`, `⟩`},
	{`\hbar`, `ℏ`},
	{`\mho`, `℧`},
	{`\larr`, `←`},
	{`\leftarrow`, `←`},
	{`\gets`, `←`},
	{`\lArr`, `⇐`},
	{`\Leftarrow`, `⇐`},
	{`\uarr`, `↑`},
	{`\uparrow`, `↑`},
	{`\uArr`, `⇑`},
	{`\Uparrow`, `⇑`},
	{`\rarr`, `→`},
	{`\to`, `→`},
	{`\rightarrow`, `→`},
	{`\rArr`, `⇒`},
	{`\Rightarrow`, `⇒`},
	{`\darr`, `↓`},
	{`\downarrow`, `↓`},
	{`\dArr`, `⇓`},
	{`\Downarrow`, `⇓`},
	{`\harr`, `↔`},
	{`\leftrightarrow`, `↔`},
	{`\hArr`, `⇔`},
	{`\Leftrightarrow`, `⇔`},
	{`\crarr`, `↵`},
	{`\hookleftarrow`, `↵`},
	{`\arccos`, `arccos`},
	{`\arcsin`, `arcsin`},
	{`\arctan`, `arctan`},
	{`\arg`, `arg`},
	{`\cos`, `cos`},
	{`\cosh`, `cosh`},
	{`\cot`, `cot`},
	{`\coth`, `coth`},
	{`\csc`, `csc`},
	{`\deg`, `deg`},
	{`\det`, `det`},
	{`\dim`, `dim`},
	{`\exp`, `exp`},
	{`\gcd`, `gcd`},
	{`\hom`, `hom`},
	{`\inf`, `inf`},
	{`\ker`, `ker`},
	{`\lg`, `lg`},
	{`\lim`, `lim`},
	{`\liminf`, `liminf`},
	{`\limsup`, `limsup`},
	{`\ln`, `ln`},
	{`\log`, `log`},
	{`\max`, `max`},
	{`\min`, `min`},
	{`\Pr`, `Pr`},
	{`\sec`, `sec`},
	{`\sin`, `sin`},
	{`\sinh`, `sinh`},
	{`\sup`, `sup`},
	{`\tan`, `tan`},
	{`\tanh`, `tanh`},
	{`\bull`, `•`},
	{`\bullet`, `•`},
	{`\star`, `⋆`},
	{`\lowast`, `∗`},
	{`\ast`, `*`},
	{`\odot`, `ʘ`},
	{`\oplus`, `⊕`},
	{`\otimes`, `⊗`},
	{`\check`, `✓`},
	{`\checkmark`, `✓`},
	{`\para`, `¶`},
	{`\ordf`, `ª`},
	{`\ordm`, `º`},
	{`\cedil`, `¸`},
	{`\oline`, `‾`},
	{`\uml`, `¨`},
	{`\zwnj`, `‌`},
	{`\zwj`, `‍`},
	{`\lrm`, `‎`},
	{`\rlm`, `‏`},
	{`\smiley`, `☺`},
	{`\blacksmile`, `☻`},
	{`\sad`, `☹`},
	{`\frowny`, `☹`},
	{`\clubs`, `♣`},
	{`\clubsuit`, `♣`},
	{`\spades`, `♠`},
	{`\spadesuit`, `♠`},
	{`\hearts`, `♥`},
	{`\heartsuit`, `♥`},
	{`\diams`, `◆`},
	{`\diamondsuit`, `◆`},
	{`\diamond`, `◆`},
	{`\Diamond`, `◆`},
	{`\loz`, `⧫`},
	{`\_ `, ` `},
	{`\_  `, `  `},
	{`\_   `, `   `},
	{`\_    `, `    `},
	{`\_     `, `     `},
	{`\_      `, `      `},
	{`\_       `, `       `},
	{`\_        `, `        `},
	{`\_         `, `         `},
	{`\_          `, `          `},
	{`\_           `, `           `},
	{`\_            `, `            `},
	{`\_             `, `             `},
	{`\_              `, `              `},
	{`\_               `, `               `},
	{`\_                `, `                `},
	{`\_                 `, `                 `},
	{`\_                  `, `                  `},
	{`\_                   `, `                   `},
	{`\_                    `, `                    `},
}