2022/9/9 11:20:58
当前为
// ==UserScript==
// @name math
// @namespace Violentmonkey Scripts
// @match https://www.ncbi.nlm.nih.gov/*
// @grant GM_setValue
// @grant GM_getValue
// @version 0.0.2
// @author chopong
// @description 2022/9/9 11:20:58
// @license MIT
// ==/UserScript==
window.onload = function(){
"use strict";
var mathblocks = document.querySelectorAll("math");
var num = mathblocks.length;
if (num>0){
for (var i=0;i<num;i++){
mathblocks[i].addEventListener("click",function(){
var latexcontent = MathML2LaTeX.convert(this.outerHTML);
let transfer = document.createElement('input');
this.parentNode.appendChild(transfer);
// document.body.appendChild(transfer);
transfer.value = latexcontent // 这里表示想要复制的内容
transfer.focus();
transfer.select();
if (document.execCommand('copy')) {
document.execCommand('copy');
}
this.parentNode.removeChild(transfer);
// document.body.removeChild(transfer);
console.log(latexcontent)
if(window.Notification && Notification.permission !== "denied") {
Notification.requestPermission(function(status) {
var n = new Notification('LaTeX', { body: latexcontent });
});
}
});
}
}
};
// const mathmlHtml = '<math display="block"><mfrac><mi>a</mi><mi>b</mi></mfrac></math>';
// const latex = MathML2LaTeX.convert(mathmlHtml); // => \frac{a}{b}
// ===============================
var MathML2LaTeX = (function () {
'use strict';
const Brackets = {
left: ['(', '[', '{', '|', '‖', '⟨', '⌊', '⌈', '⌜'],
right: [')', ']', '}', '|', '‖', '⟩', '⌋', '⌉', '⌝'],
isPair: function(l, r){
const idx = this.left.indexOf(l);
return r === this.right[idx];
},
contains: function(it) {
return this.isLeft(it) || this.isRight(it);
},
isLeft: function(it) {
return this.left.indexOf(it) > -1
},
isRight: function(it) {
return this.right.indexOf(it) > -1;
},
parseLeft: function(it, stretchy = true) {
if(this.left.indexOf(it) < 0){ return it}
let r = '';
switch(it){
case '(':
case '[':
case '|': r = `\\left${it}`;
break;
case '‖': r = '\\left\\|';
break;
case '{': r = '\\left\\{';
break;
case '⟨': r = '\\left\\langle ';
break;
case '⌊': r = '\\left\\lfloor ';
break;
case '⌈': r = '\\left\\lceil ';
break;
case '⌜': r = '\\left\\ulcorner ';
break;
}
return (stretchy ? r : r.replace('\\left', ''));
},
parseRight: function(it, stretchy = true) {
if(this.right.indexOf(it) < 0){ return it}
let r = '';
switch(it){
case ')':
case ']':
case '|': r = `\\right${it}`;
break;
case '‖': r = '\\right\\|';
break;
case '}': r = '\\right\\}';
break;
case '⟩': r = ' \\right\\rangle';
break;
case '⌋': r = ' \\right\\rfloor';
break;
case '⌉': r = ' \\right\\rceil';
break;
case '⌝': r = ' \\right\\urcorner';
break;
}
return (stretchy ? r : r.replace('\\right', ''));
}
};
// @see https://en.wikibooks.org/wiki/LaTeX/Mathematics#List_of_mathematical_symbols
// @see https://www.andy-roberts.net/res/writing/latex/symbols.pdf (more completed)
// @see http://www.rpi.edu/dept/arc/training/latex/LaTeX_symbols.pdf (wtf)
// https://oeis.org/wiki/List_of_LaTeX_mathematical_symbols
// accessed directly from keyboard
// + - = ! / ( ) [ ] < > | ' : *
const MathSymbol = {
parseIdentifier: function(it) {
if(it.length === 0){ return '' }
if(it.length === 1){
const charCode = it.charCodeAt(0);
let index = this.greekLetter.decimals.indexOf(charCode);
if ( index > -1) {
return this.greekLetter.scripts[index] + ' ';
} else {
return it;
}
} else {
return this.parseMathFunction(it);
}
},
parseOperator: function(it) {
if(it.length === 0){ return ''}
if(it.length === 1){
const charCode = it.charCodeAt(0);
const opSymbols = [
this.bigCommand,
this.relation,
this.binaryOperation,
this.setAndLogic,
this.delimiter,
this.other
];
const padSpaceBothSide = [false, true, true, false, false, false];
for(let i = 0; i < opSymbols.length; i++){
const opSymbol = opSymbols[i];
const index = opSymbol.decimals.indexOf(charCode);
if(index > -1) {
if(padSpaceBothSide[i]){
return [' ', opSymbol.scripts[index], ' '].join('');
}else {
return opSymbol.scripts[index] + ' ';
}
}
}
return it;
} else {
return this.parseMathFunction(it);
}
},
parseMathFunction: function (it) {
const marker = T.createMarker();
const replacements = [];
this.mathFunction.names.forEach((name, index) => {
const regExp = new RegExp(name, 'g');
if(it.match(regExp)){
replacements.push(this.mathFunction.scripts[index]);
it = it.replace(regExp, marker.next() + ' ');
}
});
return marker.replaceBack(it, replacements);
},
//FIXME COMPLETE ME
overScript: {
decimals: [9182],
templates: [
"\\overbrace{@v}",
]
},
//FIXME COMPLETE ME
underScript: {
decimals: [9183],
templates: [
"\\underbrace{@v}"
]
},
// sum, integral...
bigCommand: {
decimals: [8721, 8719, 8720, 10753, 10754, 10752, 8899, 8898, 10756, 10758, 8897, 8896, 8747, 8750, 8748, 8749, 10764, 8747],
scripts: [
"\\sum",
"\\prod",
"\\coprod",
"\\bigoplus",
"\\bigotimes",
"\\bigodot",
"\\bigcup",
"\\bigcap",
"\\biguplus",
"\\bigsqcup",
"\\bigvee",
"\\bigwedge",
"\\int",
"\\oint",
"\\iint",
"\\iiint",
"\\iiiint",
"\\idotsint",
]
},
// mo
relation: {
decimals: [60, 62, 61, 8741, 8742, 8804, 8805, 8784, 8781, 8904, 8810, 8811, 8801, 8866, 8867, 8834, 8835, 8776, 8712, 8715, 8838, 8839, 8773, 8995, 8994, 8840, 8841, 8771, 8872, 8713, 8847, 8848, 126, 8764, 8869, 8739, 8849, 8850, 8733, 8826, 8827, 10927, 10928, 8800, 8738, 8737],
scripts: [
"<",
">",
"=",
"\\parallel",
"\\nparallel",
"\\leq",
"\\geq",
"\\doteq",
"\\asymp",
"\\bowtie",
"\\ll",
"\\gg",
"\\equiv",
"\\vdash",
"\\dashv",
"\\subset",
"\\supset",
"\\approx",
"\\in",
"\\ni",
"\\subseteq",
"\\supseteq",
"\\cong",
"\\smile",
"\\frown",
"\\nsubseteq",
"\\nsupseteq",
"\\simeq",
"\\models",
"\\notin",
"\\sqsubset",
"\\sqsupset",
"\\sim",
"\\sim",
"\\perp",
"\\mid",
"\\sqsubseteq",
"\\sqsupseteq",
"\\propto",
"\\prec",
"\\succ",
"\\preceq",
"\\succeq",
"\\neq",
"\\sphericalangle",
"\\measuredangle"
]
},
// complete
binaryOperation: {
decimals: [43, 45, 177, 8745, 8900, 8853, 8723, 8746, 9651, 8854, 215, 8846, 9661, 8855, 247, 8851, 9667, 8856, 8727, 8852, 9657, 8857, 8902, 8744, 9711, 8728, 8224, 8743, 8729, 8726, 8225, 8901, 8768, 10815],
scripts: [
"+",
"-",
"\\pm",
"\\cap",
"\\diamond",
"\\oplus",
"\\mp",
"\\cup",
"\\bigtriangleup",
"\\ominus",
"\\times",
"\\uplus",
"\\bigtriangledown",
"\\otimes",
"\\div",
"\\sqcap",
"\\triangleleft",
"\\oslash",
"\\ast",
"\\sqcup",
"\\triangleright",
"\\odot",
"\\star",
"\\vee",
"\\bigcirc",
"\\circ",
"\\dagger",
"\\wedge",
"\\bullet",
"\\setminus",
"\\ddagger",
"\\cdot",
"\\wr",
"\\amalg"
]
},
setAndLogic: {
decimals: [8707, 8594, 8594, 8708, 8592, 8592, 8704, 8614, 172, 10233, 8834, 8658, 10233, 8835, 8596, 8712, 10234, 8713, 8660, 8715, 8868, 8743, 8869, 8744, 8709, 8709],
scripts: [
"\\exists",
"\\rightarrow",
"\\to",
"\\nexists",
"\\leftarrow",
"\\gets",
"\\forall",
"\\mapsto",
"\\neg",
"\\implies",
"\\subset",
"\\Rightarrow",
"\\implies",
"\\supset",
"\\leftrightarrow",
"\\in",
"\\iff",
"\\notin",
"\\Leftrightarrow",
"\\ni",
"\\top",
"\\land",
"\\bot",
"\\lor",
"\\emptyset",
"\\varnothing"
]
},
delimiter: {
decimals: [124, 8739, 8214, 47, 8726, 123, 125, 10216, 10217, 8593, 8657, 8968, 8969, 8595, 8659, 8970, 8971],
scripts: [
"|",
"\\mid",
"\\|",
"/",
"\\backslash",
"\\{",
"\\}",
"\\langle",
"\\rangle",
"\\uparrow",
"\\Uparrow",
"\\lceil",
"\\rceil",
"\\downarrow",
"\\Downarrow",
"\\lfloor",
"\\rfloor"
]
},
greekLetter: {
decimals: [ 913, 945, 925, 957, 914, 946, 926, 958, 915, 947, 927, 959, 916, 948, 928, 960, 982, 917, 1013, 949, 929, 961, 1009, 918, 950, 931, 963, 962, 919, 951, 932, 964, 920, 952, 977, 933, 965, 921, 953, 934, 981, 966, 922, 954, 1008, 935, 967, 923, 955, 936, 968, 924, 956, 937, 969 ],
scripts: [
"A" , "\\alpha" ,
"N" , "\\nu" ,
"B" , "\\beta" ,
"\\Xi" , "\\xi" ,
"\\Gamma" , "\\gamma" ,
"O" , "o" ,
"\\Delta" , "\\delta" ,
"\\Pi" , "\\pi" , "\\varpi" ,
"E" , "\\epsilon" , "\\varepsilon" ,
"P" , "\\rho" , "\\varrho" ,
"Z" , "\\zeta" ,
"\\Sigma" , "\\sigma" , "\\varsigma" ,
"H" , "\\eta" ,
"T" , "\\tau" ,
"\\Theta" , "\\theta" , "\\vartheta" ,
"\\Upsilon" , "\\upsilon" ,
"I" , "\\iota" ,
"\\Phi" , "\\phi" , "\\varphi" ,
"K" , "\\kappa" , "\\varkappa" ,
"X" , "\\chi" ,
"\\Lambda" , "\\lambda" ,
"\\Psi" , "\\psi" ,
"M" , "\\mu" ,
"\\Omega" , "\\omega"
]
},
other: {
decimals: [8706, 305, 8476, 8711, 8501, 240, 567, 8465, 9723, 8502, 8463, 8467, 8472, 8734, 8503],
scripts: [
"\\partial",
"\\imath",
"\\Re",
"\\nabla",
"\\aleph",
"\\eth",
"\\jmath",
"\\Im",
"\\Box",
"\\beth",
"\\hbar",
"\\ell",
"\\wp",
"\\infty",
"\\gimel"
]
},
// complete
// Be careful, the order of these name matters (overlap situation).
mathFunction: {
names: [
"arcsin" , "sinh" , "sin" , "sec" ,
"arccos" , "cosh" , "cos" , "csc" ,
"arctan" , "tanh" , "tan" ,
"arccot" , "coth" , "cot" ,
"limsup" , "liminf" , "exp" , "ker" ,
"deg" , "gcd" , "lg" , "ln" ,
"Pr" , "sup" , "det" , "hom" ,
"lim" , "log" , "arg" , "dim" ,
"inf" , "max" , "min" ,
],
scripts: [
"\\arcsin" , "\\sinh" , "\\sin" , "\\sec" ,
"\\arccos" , "\\cosh" , "\\cos" , "\\csc" ,
"\\arctan" , "\\tanh" , "\\tan" ,
"\\arccot" , "\\coth" , "\\cot" ,
"\\limsup" , "\\liminf" , "\\exp" , "\\ker" ,
"\\deg" , "\\gcd" , "\\lg" , "\\ln" ,
"\\Pr" , "\\sup" , "\\det" , "\\hom" ,
"\\lim" , "\\log" , "\\arg" , "\\dim" ,
"\\inf" , "\\max" , "\\min" ,
]
}
};
const T = {}; // Tool
T.createMarker = function() {
return {
idx: -1,
reReplace: /@\[\[(\d+)\]\]/mg,
next: function() {
return `@[[${++this.idx}]]`
},
replaceBack: function(str, replacements) {
return str.replace(this.reReplace, (match, p1) => {
const index = parseInt(p1);
return replacements[index];
});
}
}
};
/*
* Set up window for Node.js
*/
const root = (typeof window !== 'undefined' ? window : {});
/*
* Parsing HTML strings
*/
function canParseHTMLNatively () {
const Parser = root.DOMParser;
let canParse = false;
// Adapted from https://gist.github.com/1129031
// Firefox/Opera/IE throw errors on unsupported types
try {
// WebKit returns null on unsupported types
if (new Parser().parseFromString('', 'text/html')) {
canParse = true;
}
} catch (e) {}
return canParse
}
function createHTMLParser () {
const Parser = function () {};
{
if (shouldUseActiveX()) {
Parser.prototype.parseFromString = function (string) {
const doc = new window.ActiveXObject('htmlfile');
doc.designMode = 'on'; // disable on-page scripts
doc.open();
doc.write(string);
doc.close();
return doc
};
} else {
Parser.prototype.parseFromString = function (string) {
const doc = document.implementation.createHTMLDocument('');
doc.open();
doc.write(string);
doc.close();
return doc
};
}
}
return Parser
}
function shouldUseActiveX () {
let useActiveX = false;
try {
document.implementation.createHTMLDocument('').open();
} catch (e) {
if (window.ActiveXObject) useActiveX = true;
}
return useActiveX
}
var HTMLParser = canParseHTMLNatively() ? root.DOMParser : createHTMLParser();
const NodeTool = {
parseMath: function(html) {
const parser = new HTMLParser();
const doc = parser.parseFromString(html, 'text/html');
return doc.querySelector('math');
},
getChildren: function(node) {
return node.children;
},
getNodeName: function(node) {
return node.tagName.toLowerCase();
},
getNodeText: function(node) {
return node.textContent;
},
getAttr: function(node, attrName, defaultValue) {
const value = node.getAttribute(attrName);
if ( value === null) {
return defaultValue;
} else {
return value;
}
},
getPrevNode: function(node) {
return node.previousElementSibling;
},
getNextNode: function(node) {
return node.nextElementSibling;
}
};
function convert(mathmlHtml){
const math = NodeTool.parseMath(mathmlHtml);
return toLatex(parse(math));
}
function toLatex(result) {
// binomial coefficients
result = result.replace(/\\left\(\\DELETE_BRACKET_L/g, '');
result = result.replace(/\\DELETE_BRACKET_R\\right\)/g, '');
result = result.replace(/\\DELETE_BRACKET_L/g, '');
result = result.replace(/\\DELETE_BRACKET_R/g, '');
return result;
}
function parse(node) {
const children = NodeTool.getChildren(node);
if (!children || children.length === 0) {
return parseLeaf(node);
} else {
return parseContainer(node, children);
}
}
// @see https://www.w3.org/TR/MathML3/chapter7.html
function parseLeaf(node) {
let r = '';
const nodeName = NodeTool.getNodeName(node);
switch(nodeName){
case 'mi': r = parseElementMi(node);
break;
case 'mn': r = parseElementMn(node);
break;
case 'mo': r = parseOperator(node);
break;
case 'ms': r = parseElementMs(node);
break;
case 'mtext': r = parseElementMtext(node);
break;
case 'mglyph': r = parseElementMglyph(node);
break;
case 'mprescripts': r = '';
break;
case 'mspace': r = parseElementMspace();
case 'none': r = '\\:';
//TODO other usecase of 'none' ?
break;
default: r = escapeSpecialChars(NodeTool.getNodeText(node).trim());
break;
}
return r;
}
// operator token, mathematical operators
function parseOperator(node) {
let it = NodeTool.getNodeText(node).trim();
it = MathSymbol.parseOperator(it);
return escapeSpecialChars(it);
}
// Math identifier
function parseElementMi(node){
let it = NodeTool.getNodeText(node).trim();
it = MathSymbol.parseIdentifier(it);
return escapeSpecialChars(it);
}
// Math Number
function parseElementMn(node){
let it = NodeTool.getNodeText(node).trim();
return escapeSpecialChars(it);
}
// Math String
function parseElementMs(node){
const content = NodeTool.getNodeText(node).trimRight();
const it = escapeSpecialChars(content);
return ['"', it, '"'].join('');
}
// Math Text
function parseElementMtext(node){
const content = NodeTool.getNodeText(node);
const it = escapeSpecialChars(content);
return `\\text{${it}}`;
}
// Math glyph (image)
function parseElementMglyph(node){
const it = ['"', NodeTool.getAttr(node, 'alt', ''), '"'].join('');
return escapeSpecialChars(it);
}
// TODO need or not
function parseElementMspace(node){
return '';
}
function escapeSpecialChars(text) {
const specialChars = /\$|%|_|&|#|\{|\}/g;
text = text.replace(specialChars, char => `\\${ char }`);
return text;
}
function parseContainer(node, children) {
const render = getRender(node);
if(render){
return render(node, children);
} else {
throw new Error(`Couldn't get render function for container node: ${NodeTool.getNodeName(node)}`);
}
}
function renderChildren(children) {
const parts = [];
let lefts = [];
Array.prototype.forEach.call(children, (node) => {
if(NodeTool.getNodeName(node) === 'mo'){
const op = NodeTool.getNodeText(node).trim();
if(Brackets.contains(op)){
let stretchy = NodeTool.getAttr(node, 'stretchy', 'true');
stretchy = ['', 'true'].indexOf(stretchy) > -1;
// 操作符是括號
if(Brackets.isRight(op)){
const nearLeft = lefts[lefts.length - 1];
if(nearLeft){
if(Brackets.isPair(nearLeft, op)){
parts.push(Brackets.parseRight(op, stretchy));
lefts.pop();
} else {
// some brackets left side is same as right side.
if(Brackets.isLeft(op)) {
parts.push(Brackets.parseLeft(op, stretchy));
lefts.push(op);
} else {
console.error("bracket not match");
}
}
}else {
// some brackets left side is same as right side.
if(Brackets.isLeft(op)) {
parts.push(Brackets.parseLeft(op, stretchy));
lefts.push(op);
}else {
console.error("bracket not match");
}
}
} else {
parts.push(Brackets.parseLeft(op, stretchy));
lefts.push(op);
}
} else {
parts.push(parseOperator(node));
}
} else {
parts.push(parse(node));
}
});
// 這裏非常不嚴謹
if(lefts.length > 0){
for(let i=0; i < lefts.length; i++){
parts.push("\\right.");
}
}
lefts = undefined;
return parts;
}
function getRender(node) {
let render = undefined;
const nodeName = NodeTool.getNodeName(node);
switch(nodeName){
case 'msub':
render = getRender_default("@1_{@2}");
break;
case 'msup':
render = getRender_default("@1^{@2}");
break;
case 'msubsup':
render = getRender_default("@1_{@2}^{@3}");
break;
case 'mover':
render = renderMover;
break;
case 'munder':
render = renderMunder;
break;
case 'munderover':
render = getRender_default("@1\\limits_{@2}^{@3}");
break;
case 'mmultiscripts':
render = renderMmultiscripts;
break;
case 'mroot':
render = getRender_default("\\sqrt[@2]{@1}");
break;
case 'msqrt':
render = getRender_joinSeparator("\\sqrt{@content}");
break;
case 'mtable':
render = renderTable;
break;
case 'mtr':
render = getRender_joinSeparator("@content \\\\ ", ' & ');
break;
case 'mtd':
render = getRender_joinSeparator("@content");
break;
case 'mfrac':
render = renderMfrac;
break;
case 'mfenced':
render = renderMfenced;
break;
case 'mi':
case 'mn':
case 'mo':
case 'ms':
case 'mtext':
// they may contains <mglyph>
render = getRender_joinSeparator("@content");
break;
case 'mphantom':
render = renderMphantom;
break;
default:
// math, mstyle, mrow
render = getRender_joinSeparator("@content");
break;
}
return render;
}
function renderTable(node, children) {
const template = "\\begin{matrix} @content \\end{matrix}";
const render = getRender_joinSeparator(template);
return render(node, children);
}
function renderMfrac(node, children){
const [linethickness, bevelled] = [
NodeTool.getAttr(node, 'linethickness', 'medium'),
NodeTool.getAttr(node, 'bevelled', 'false')
];
let render = null;
if(bevelled === 'true') {
render = getRender_default("{}^{@1}/_{@2}");
} else if(['0', '0px'].indexOf(linethickness) > -1) {
const [prevNode, nextNode] = [
NodeTool.getPrevNode(node),
NodeTool.getNextNode(node)
];
if((prevNode && NodeTool.getNodeText(prevNode).trim() === '(') &&
(nextNode && NodeTool.getNodeText(nextNode).trim() === ')')
) {
render = getRender_default("\\DELETE_BRACKET_L\\binom{@1}{@2}\\DELETE_BRACKET_R");
} else {
render = getRender_default("{}_{@2}^{@1}");
}
} else {
render = getRender_default("\\frac{@1}{@2}");
}
return render(node, children);
}
function renderMfenced(node, children){
const [open, close, separatorsStr] = [
NodeTool.getAttr(node, 'open', '('),
NodeTool.getAttr(node, 'close', ')'),
NodeTool.getAttr(node, 'separators', ',')
];
const [left, right] = [
Brackets.parseLeft(open),
Brackets.parseRight(close)
];
const separators = separatorsStr.split('').filter((c) => c.trim().length === 1);
const template = `${left}@content${right}`;
const render = getRender_joinSeparators(template, separators);
return render(node, children);
}
function renderMmultiscripts(node, children) {
if(children.length === 0) { return '' }
let sepIndex = -1;
let mprescriptsNode = null;
Array.prototype.forEach.call(children, (node) => {
if(NodeTool.getNodeName(node) === 'mprescripts'){
mprescriptsNode = node;
}
});
if(mprescriptsNode) {
sepIndex = Array.prototype.indexOf.call(children, mprescriptsNode);
}
const parts = renderChildren(children);
const splitArray = (arr, index) => {
return [arr.slice(0, index), arr.slice(index + 1, arr.length)]
};
const renderScripts = (items) => {
if(items.length > 0) {
const subs = [];
const sups = [];
items.forEach((item, index) => {
// one render as sub script, one as super script
if((index + 1) % 2 === 0){
sups.push(item);
} else {
subs.push(item);
}
});
return [
(subs.length > 0 ? `_{${subs.join(' ')}}` : ''),
(sups.length > 0 ? `^{${sups.join(' ')}}` : '')
].join('');
} else {
return '';
}
};
const base = parts.shift();
let prevScripts = [];
let backScripts = [];
if(sepIndex === -1){
backScripts = parts;
} else {
[backScripts, prevScripts] = splitArray(parts, sepIndex - 1);
}
return [renderScripts(prevScripts), base, renderScripts(backScripts)].join('');
}
function renderMover(node, children){
const nodes = flattenNodeTreeByNodeName(node, 'mover');
let result = undefined;
for(let i = 0; i < nodes.length - 1; i++) {
if(!result){ result = parse(nodes[i]); }
const over = parse(nodes[i + 1]);
const template = getMatchValueByChar({
decimals: MathSymbol.overScript.decimals,
values: MathSymbol.overScript.templates,
judgeChar: over,
defaultValue: "@1\\limits^{@2}"
});
result = renderTemplate(template.replace("@v", "@1"), [result, over]);
}
return result;
}
function renderMunder(node, children){
const nodes = flattenNodeTreeByNodeName(node, 'munder');
let result = undefined;
for(let i = 0; i < nodes.length - 1; i++) {
if(!result){ result = parse(nodes[i]); }
const under = parse(nodes[i + 1]);
const template = getMatchValueByChar({
decimals: MathSymbol.underScript.decimals,
values: MathSymbol.underScript.templates,
judgeChar: under,
defaultValue: "@1\\limits_{@2}"
});
result = renderTemplate(template.replace("@v", "@1"), [result, under]);
}
return result;
}
function flattenNodeTreeByNodeName(root, nodeName) {
let result = [];
const children = NodeTool.getChildren(root);
Array.prototype.forEach.call(children, (node) => {
if (NodeTool.getNodeName(node) === nodeName) {
result = result.concat(flattenNodeTreeByNodeName(node, nodeName));
} else {
result.push(node);
}
});
return result;
}
function getMatchValueByChar(params) {
const {decimals, values, judgeChar, defaultValue=null} = params;
if (judgeChar && judgeChar.length === 1) {
const index = decimals.indexOf(judgeChar.charCodeAt(0));
if (index > -1) {
return values[index];
}
}
return defaultValue;
}
// https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mphantom
// FIXME :)
function renderMphantom(node, children) {
return '';
}
function getRender_default(template) {
return function(node, children) {
const parts = renderChildren(children);
return renderTemplate(template, parts)
}
}
function renderTemplate(template, values) {
return template.replace(/\@\d+/g, (m) => {
const idx = parseInt(m.substring(1, m.length)) - 1;
return values[idx];
});
}
function getRender_joinSeparator(template, separator = '') {
return function(node, children) {
const parts = renderChildren(children);
return template.replace("@content", parts.join(separator));
}
}
function getRender_joinSeparators(template, separators) {
return function(node, children) {
const parts = renderChildren(children);
let content = '';
if(separators.length === 0){
content = parts.join('');
} else {
content = parts.reduce((accumulator, part, index) => {
accumulator += part;
if(index < parts.length - 1){
accumulator += (separators[index] || separators[separators.length - 1]);
}
return accumulator;
}, '');
}
return template.replace("@content", content);
}
}
var mathml2latex = {convert: convert};
return mathml2latex;
})();
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