/
contentScript.js
219 lines (196 loc) · 6.03 KB
/
contentScript.js
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function httpGetAsync(theUrl, callback) {
let xmlHttp = new XMLHttpRequest();
xmlHttp.onreadystatechange = function() {
if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
callback(xmlHttp.responseText);
}
}
xmlHttp.open("GET", theUrl, true); // true for asynchronous
xmlHttp.send(null);
}
function GotNoResults(nodeList) {
for (let i = 0; i < nodeList.length; i++) {
let node = nodeList[i];
if (node.nodeName == "#text" && node.textContent.includes("Saw 0")) {
return true;
}
}
return false;
}
function onSearchResponse(alternate, responseText) {
let nodeList = $.parseHTML(responseText);
if (!GotNoResults(nodeList)) {
console.log("Got non-empty response for: " + alternate);
let wordSearchedDiv = document.createElement('div');
wordSearchedDiv.innerHTML = "Searched for <b>" + alternate + "</b>";
appendResult([ wordSearchedDiv ]);
appendResult(nodeList.slice(3));
} else {
console.log("Got empty response for: " + alternate);
}
}
function getMenuDocument() {
let menuFrame = $("frame[name='menu']")[0];
let menuDoc = menuFrame.contentDocument || menuFrame.contentWindow.document;
return menuDoc;
}
function getResultDocument() {
let resultFrame = $("frame[name='result']")[0];
let resultDoc = resultFrame.contentDocument || resultFrame.contentWindow.document;
return resultDoc;
}
function appendResult(nodeList) {
let resultDoc = getResultDocument();
let resultBody = $(resultDoc).find("body")[0];
for (let i = 0; i < nodeList.length; i++) {
resultBody.append(nodeList[i]);
}
}
let vowels = [ 'a', 'ā', 'e', 'ĕ', 'ö', 'i', 'ī', 'o', 'u', 'ū' ];
function startsWithVowel(word) {
for (let i = 0; i < vowels.length; i++) {
if (word.startsWith(vowels[i])) {
return true;
}
}
return false;
}
let similarLetters = [
[ "a", "ā" ],
[ "b", "bh" ],
[ "c", "ch" ],
[ "d", "dh", "ḍ", "ḍh" ],
[ "ĕ", "ö" ],
[ "e", "ai" ],
[ "g", "gh" ],
[ "h" ],
[ "i", "ī" ],
[ "j", "jh" ],
[ "k", "kh" ],
[ "l" ],
[ "m" ],
[ "n" ],
[ "ṅ" ],
[ "ñ" ],
[ "o" ],
[ "p", "ph" ],
[ "r", "ṛ" ],
[ "s", "ś", "ṣ" ],
[ "t", "th", "ṭ", "ṭh" ],
[ "u", "ū" ],
[ "w" ],
[ "y" ]
];
function getSearchBox() {
let menu = getMenuDocument();
let input = $(menu).find("#query")[0];
return input;
}
function getSearchBoxString() {
let input = getSearchBox();
console.log("input: " + input.value);
return input.value;
}
function getLetterEquivalenceClass(char) {
for (let i = 0; i < similarLetters.length; i++) {
let arr = similarLetters[i];
let index = arr.indexOf(char);
if (index != -1) {
return arr;
}
}
console.log("didnt find: " + char);
return [];
}
function generatePermuations(word) {
let alts = [ "" ];
let newAlts = [];
for (let i = 0; i < word.length; i++) {
let altChars = getLetterEquivalenceClass(word[i]);
for (let j = 0; j < alts.length; j++) {
let currentAlt = alts[j];
for (let k = 0; k < altChars.length; k++) {
newAlts.push(currentAlt + altChars[k]);
}
}
alts = newAlts;
newAlts = [];
}
return alts;
}
function generateAlternates(original) {
let word = original.trim();
if(word.length == 0) {
return [];
}
let alts = generatePermuations(word);
if (startsWithVowel(word)) {
alts.push("h" + word);
}
// remove original
let index = alts.indexOf(word);
alts.splice(index, 1);
console.log(alts);
return alts;
}
let entryHtmlCache = {};
function fillCache() {
for (let i = 0; i < similarLetters.length; i++) {
let eqClass = similarLetters[i].join("|");
let url = entrySearchUrl + encodeURIComponent(eqClass);
httpGetAsync(url, function(responseText) {
entryHtmlCache[eqClass] = responseText;
console.log("FillCache: got entryHtml for: " + eqClass);
});
}
}
let entrySearchUrl = "http://sealang.net/ojed/search.pl?service=entry&form=short&facet=head&query=";
function checkExistsInEntryHtml(alternate, cb) {
let eqClass = getLetterEquivalenceClass(alternate[0]).join("|");
let url = entrySearchUrl + encodeURIComponent(eqClass);
if (eqClass in entryHtmlCache) {
cb(entryHtmlCache[eqClass].includes(alternate));
} else {
httpGetAsync(url, function(responseText) {
entryHtmlCache[eqClass] = responseText;
console.log("Got entryHtml for: " + eqClass);
cb(responseText.includes(alternate));
});
}
}
let searchUrl = "http://sealang.net/ojed/search.pl?service=dictionary&form=short&query=";
function search() {
let input = getSearchBoxString();
let alternates = generateAlternates(input);
console.log("alternates #: " + alternates.length);
for (let i = 0; i < alternates.length; i++) {
let alternate = alternates[i];
checkExistsInEntryHtml(alternate, function (exists) {
if (exists) {
let queryUrl = searchUrl + encodeURIComponent(alternate);
httpGetAsync(queryUrl, function(responseText) {
onSearchResponse(alternate, responseText);
});
console.log("sent request for: " + alternate);
} else {
console.log("skipped request for: " + alternate);
}
});
}
}
function getSearchButton() {
let menu = getMenuDocument();
let button = $(menu).find("button.nopad")[0];
return button;
}
function init() {
fillCache();
let resultFrame = $("frame[name='result']")[0];
var resultDoc = getResultDocument();
$(resultFrame).on("load", function () {
//alert("Hi there, hello");
search();
})
console.log("Sealang Plus initialized.");
}
window.onload = init();