Extract BibTeX data automatically and modify BibTeX Key to AUTHOR_YEAR_TITLE.
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// ==UserScript==
// @namespace vanabeljs
// @name MRLookup
// @description Extract BibTeX data automatically and modify BibTeX Key to AUTHOR_YEAR_TITLE.
// @description:ZH-CN 自动提取BibTeX数据并修改BibTeX关键字为AUTHOR_YEAR_TITLE的形式.
// @copyright 2017, Van Abel (https://home.vanabel.cn)
// @license OSI-SPDX-Short-Identifier
// @version 1.5
// @include http://www.ams.org/mrlookup
// @include https://mathscinet.ams.org/mrlookup
// @include http://www.ams.org/mathscinet/search/publications.html?fmt=bibtex*
// @grant GM_setClipboard
// ==/UserScript==
// ==OpenUserJS==
// @author Van Abel
// ==/OpenUserJS==
/**
*
* Please begin typing or paste your Userscript now.
*
*/
/*The first word to ignore in title*/
var IgnoreStringInTitle = [
'a',
'an',
'on',
'the',
'another'
];
function IgnoreStringToRegExp(arr) {
var regexp = '^(';
var arrlen = arr.length;
for (var i = 0; i < arrlen; i++) {
if (i == arrlen - 1) {
regexp += '(' + arr[i] + ')';
} else {
regexp += '(' + arr[i] + ')|';
}
}
regexp += ')\\s*';
return regexp;
}//console.log(IgnoreStringToRegExp(IgnoreStringInTitle));
/*split bibdata*/
function parseBibTexLine(text) {
var m = text.match(/^\s*(\S+)\s*=\s*/);
if (!m) {
console.log('line: "' + text + '"');
throw new Error('Unrecogonised line format');
}
var name = m[1];
var search = text.slice(m[0].length);
var re = /[\n\r,{}]/g;
var braceCount = 0;
var length = m[0].length;
do {
m = re.exec(search);
if (m[0] === '{') {
braceCount++;
} else if (m[0] === '}') {
if (braceCount === 0) {
throw new Error('Unexpected closing brace: "}"');
}
braceCount--;
}
} while (braceCount > 0);
return {
field: name,
value: search.slice(0, re.lastIndex),
length: length + re.lastIndex + m[0].length
};
}
function parseBibTex(text) {
var m = text.match(/^\s*@([^{]+){([^,\n]+)[,\n]/);
if (!m) {
throw new Error('Unrecogonised header format');
}
var result = {
typeName: m[1].trim(),
citationKey: m[2].trim()
};
text = text.slice(m[0].length).trim();
while (text[0] !== '}') {
var pair = parseBibTexLine(text);
result[pair.field] = pair.value;
text = text.slice(pair.length).trim();
}
return result;
}
var els = document.getElementsByTagName('pre');
for (var i = 0, l = els.length; i < l; i++) {
var el = els[i];
var bibdata = parseBibTex(el.innerHTML);
/*Extract author*/
//var aureg = new RegExp('(?:(\\w+),(?:[^,}](?!and))+)+', 'g');
//console.log(audata.match(aureg));
var audata = bibdata.AUTHOR;
//clean author include \v+space and $\cmd$
audata = audata.replace(/\\[a-z]\s|(\$.*?\$)|(\\")/gi, '');
//console.log(audata);
//remove doublw , in one name
audata = audata.replace(/(?:(?:and)?(\w+,\s*\w+\.)(,.*?)?)+/g, '$1');
//console.log(audata);
//extract first name
audata = audata.replace(/(?:(\w+),(?:[^,}](?!and))+)+/g, '$1');
//console.log(audata);
var cleanreg = new RegExp('\\s*and\\s*|[{}\\\\\'\\\\\\"]', 'g');
//console.log(cleanreg);
var au = audata.replace(cleanreg, '');
//console.log(au);
/*Extract Year*/
var year = bibdata.YEAR.replace(cleanreg, '');
//console.log(year);
/*Extract Title*/
var title = bibdata.TITLE;
//clean \cmd+space
title = title.replace(/\\\w+\s*/g, '');
var titleclean = new RegExp(IgnoreStringToRegExp(IgnoreStringInTitle), 'gi');
//we don't need to clean and, but we need to clean -,{,},: and ,
//var cleanreg = new RegExp('[{}:-]|,|(\\r\\s*)|(\\n\\s*)', 'g');
title = title.replace(/[\\\'\"{}:-]|,|(\r\s*)|(\n\s*)/g, '');
//var cleandollar = new RegExp('\\$.*?\\$', 'g');
title = title.replace(/\$.*?\$/g, '');
var titlefinal = title.replace(titleclean, '');
while (title != titlefinal) {
//recursively remove the ignore word
title = titlefinal;
titlefinal = title.replace(titleclean, '');
} //var titlereg = new RegExp('(\\w+)(\\s*\\w+)*', 'gi');
title = title.replace(/(\w+).*$/gi, '$1').replace(/\s*/g, '');
var bibkey = au + year + title;
//console.log(bibkey);
var bibkeyreg = new RegExp('MR\\d+', 'gi');
el.innerHTML = el.innerHTML.replace(bibkeyreg, bibkey);
/*click to copy to clipboard*/
el.addEventListener('click', function () {
//Actual new line break
//var linebreakreg = new RegExp('\\r|\\n', 'g');
var bibdata_lb = this.innerHTML.replace(/\r|\n/g, '\r\n').replace(/^\r\n/g, '').replace(/\s*$/g, '\r\n').replace(/\r\n\r\n/g, '\r\n');
GM_setClipboard(bibdata_lb);
});
}