WebApp for filtering and searching CORD19 titles and abstracts in MeSH contexts
License: MIT License
Rudimentary implementation of OR and AND is supported, but there should be support for parenthesis.
And less usefully, it would be good to have support for double quotes.
The way splitWords() works is by creating an array of strings that are either punctuation or alphanumeric, starting with punctuation. (If there is no prefix punctuation, the first element will be blank.) Adjacent punctuation is combined into one element.
The first change for better syntax support is to alter the way splitWords (and callers) work, to be more of a tokenizer for punctuation: we want each punctuation character to be in its own string element. That will require placing empty string elements for text in between adjacent punctuation, and some callers will need to be adapted for this change.
Both before and after this intermediate change, everything should work as before, and splitWords(s,0).join('') is always supposed to == s.
I refactored splitWords() in a companion parser in order to support highlighting. Callers have to be updated. Anything that used to have a second argument of false, needs a second argument of -1. Anything that had a second argument of true, needs a second argument of 1.
function splitWords(phrase, iCase)
{
var words = [];
var p = 0;
var lastp =0;
var wordchars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-";
while(p < phrase.length) {
lastp = p;
while (p < phrase.length) {
var code = phrase.charCodeAt(p);
if (code >= 0x41) {
if (code <= 0x5a) {
} else if (code >= 0x61 && code <= 0x7a) {
} else {
break;
}
} else if (code <= 0x39) {
if (code >= 0x30 || code == 0x2d) {
} else {
break;
}
}
p++;
}
if (lastp == 0) {
words.push("");
}
if (p > lastp) {
/* Got a string of alphanumerics */
if (words.length > 1 && (words[words.length-1]=="'" || words[words.length-1]=="’")) {
/* Contraction */
var prev = words[words.length-2];
if (phrase.substr(lastp,p-lastp).toLowerCase() == 't') {
if (prev.substr(prev.length-1).toLowerCase() == 'n') {
words[words.length-2] = prev.substr(0,prev.length-1);
lastp -= 2;
}
words.push(phrase.substr(lastp,p-lastp).toLowerCase());
words.push("");
} else {
words.push(phrase.substr(lastp,p-lastp).toLowerCase());
words.push("");
}
} else {
word = phrase.substr(lastp,p-lastp).toLowerCase();
if (iCase==1 && (word == 'or' || word == 'and')) {/* DEBUG: if not in double-quotes */
words.push(word.toUpperCase());
} else if (iCase == 0) {
words.push(phrase.substr(lastp,p-lastp));
} else {
words.push(word.toLowerCase());
}
words.push("");
}
}
if (p < phrase.length) {
/* Punctuation */
words[words.length-1] += phrase.substr(p,1);
}
p++;
}
//WScript.Echo("I-90 " + words.join(';'));
return words;
}That allows usage for highlighting like this:
var terms = splitWords(filterText,1); // Leave OR and AND as special.
var positions = wordsMatchTerms(splitWords(s,-1), terms); //Get indices
if (positions) {
var highlighted = splitWords(s,0);
positions.forEach(i => { highlighted[i] = '<b>' + highlighted[i] + "</b>"});
//Use highlighted.join('').
}This will help deep linking using the querystring search params work better.
The text after "CORD-19 PubMed citation explorer" is only updated on a hard reload, not after a single page app navigation.
With the move to date selectors, we lost the indication of article counts by years. Under the date selectors, show year and count of at least the last 10 years.
The document count in "This heading has XXX documents in CORD-19 PubMed" should be independent of the search params. Currently it is affected by the search params.
The Pub. Type. Column width should be fixed so that it does not change size when the results are updated or abstracts are shown.
Search results should be sorted descending by date (newest results first)
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