ffmpeg-python/doc/html/_static/searchtools.js at master · outflows/ffmpeg-python · GitHub

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* searchtools.js

* ~~~~~~~~~~~~~~~~

* Sphinx JavaScript utilities for the full-text search.

* :license: BSD, see LICENSE for details.

if (!Scorer) {

/**

* Simple result scoring code.

var Scorer = {

// Implement the following function to further tweak the score for each result

// The function takes a result array [filename, title, anchor, descr, score]

// and returns the new score.

score: function(result) {

return result[4];

// query matches the full name of an object

objNameMatch: 11,

// or matches in the last dotted part of the object name

objPartialMatch: 6,

// Additive scores depending on the priority of the object

objPrio: {0: 15, // used to be importantResults

1: 5, // used to be objectResults

2: -5}, // used to be unimportantResults

// Used when the priority is not in the mapping.

objPrioDefault: 0,

// query found in title

title: 15,

partialTitle: 7,

// query found in terms

term: 5,

partialTerm: 2

};

}

if (!splitQuery) {

function splitQuery(query) {

return query.split(/\s+/);

}

/**

* Search Module

var Search = {

_index : null,

_queued_query : null,

_pulse_status : -1,

htmlToText : function(htmlString) {

var htmlElement = document.createElement('span');

htmlElement.innerHTML = htmlString;

$(htmlElement).find('.headerlink').remove();

docContent = $(htmlElement).find('[role=main]')[0];

return docContent.textContent || docContent.innerText;

init : function() {

var params = $.getQueryParameters();

if (params.q) {

var query = params.q[0];

$('input[name="q"]')[0].value = query;

this.performSearch(query);

}

loadIndex : function(url) {

$.ajax({type: "GET", url: url, data: null,

dataType: "script", cache: true,

complete: function(jqxhr, textstatus) {

if (textstatus != "success") {

document.getElementById("searchindexloader").src = url;

}

}});

setIndex : function(index) {

var q;

this._index = index;

if ((q = this._queued_query) !== null) {

this._queued_query = null;

Search.query(q);

}

hasIndex : function() {

return this._index !== null;

deferQuery : function(query) {

this._queued_query = query;

stopPulse : function() {

this._pulse_status = 0;

startPulse : function() {

if (this._pulse_status >= 0)

return;

function pulse() {

var i;

Search._pulse_status = (Search._pulse_status + 1) % 4;

var dotString = '';

for (i = 0; i < Search._pulse_status; i++)

dotString += '.';

Search.dots.text(dotString);

if (Search._pulse_status > -1)

window.setTimeout(pulse, 500);

}

pulse();

/**

* perform a search for something (or wait until index is loaded)

performSearch : function(query) {

// create the required interface elements

this.out = $('#search-results');

this.title = $('<h2>' + _('Searching') + '</h2>').appendTo(this.out);

this.dots = $('<span></span>').appendTo(this.title);

this.status = $('<p class="search-summary"> </p>').appendTo(this.out);

this.output = $('<ul class="search"/>').appendTo(this.out);

$('#search-progress').text(_('Preparing search...'));

this.startPulse();

// index already loaded, the browser was quick!

if (this.hasIndex())

this.query(query);

else

this.deferQuery(query);

/**

* execute search (requires search index to be loaded)

query : function(query) {

var i;

// stem the searchterms and add them to the correct list

var stemmer = new Stemmer();

var searchterms = [];

var excluded = [];

var hlterms = [];

var tmp = splitQuery(query);

var objectterms = [];

for (i = 0; i < tmp.length; i++) {

if (tmp[i] !== "") {

objectterms.push(tmp[i].toLowerCase());

}

if ($u.indexOf(stopwords, tmp[i].toLowerCase()) != -1 || tmp[i].match(/^\d+$/) ||

tmp[i] === "") {

// skip this "word"

continue;

}

// stem the word

var word = stemmer.stemWord(tmp[i].toLowerCase());

// prevent stemmer from cutting word smaller than two chars

if(word.length < 3 && tmp[i].length >= 3) {

word = tmp[i];

}

var toAppend;

// select the correct list

if (word[0] == '-') {

toAppend = excluded;

word = word.substr(1);

}

else {

toAppend = searchterms;

hlterms.push(tmp[i].toLowerCase());

}

// only add if not already in the list

if (!$u.contains(toAppend, word))

toAppend.push(word);

}

var highlightstring = '?highlight=' + $.urlencode(hlterms.join(" "));

// console.debug('SEARCH: searching for:');

// console.info('required: ', searchterms);

// console.info('excluded: ', excluded);

// prepare search

var terms = this._index.terms;

var titleterms = this._index.titleterms;

// array of [filename, title, anchor, descr, score]

var results = [];

$('#search-progress').empty();

// lookup as object

for (i = 0; i < objectterms.length; i++) {

var others = [].concat(objectterms.slice(0, i),

objectterms.slice(i+1, objectterms.length));

results = results.concat(this.performObjectSearch(objectterms[i], others));

}

// lookup as search terms in fulltext

results = results.concat(this.performTermsSearch(searchterms, excluded, terms, titleterms));

// let the scorer override scores with a custom scoring function

if (Scorer.score) {

for (i = 0; i < results.length; i++)

results[i][4] = Scorer.score(results[i]);

}

// now sort the results by score (in opposite order of appearance, since the

// display function below uses pop() to retrieve items) and then

// alphabetically

results.sort(function(a, b) {

var left = a[4];

var right = b[4];

if (left > right) {

return 1;

} else if (left < right) {

return -1;

} else {

// same score: sort alphabetically

left = a[1].toLowerCase();

right = b[1].toLowerCase();

return (left > right) ? -1 : ((left < right) ? 1 : 0);

}

});

// for debugging

//Search.lastresults = results.slice(); // a copy

//console.info('search results:', Search.lastresults);

// print the results

var resultCount = results.length;

function displayNextItem() {

// results left, load the summary and display it

if (results.length) {

var item = results.pop();

var listItem = $('<li style="display:none"></li>');

if (DOCUMENTATION_OPTIONS.FILE_SUFFIX === '') {

// dirhtml builder

var dirname = item[0] + '/';

if (dirname.match(/\/index\/$/)) {

dirname = dirname.substring(0, dirname.length-6);

} else if (dirname == 'index/') {

dirname = '';

}

listItem.append($('<a/>').attr('href',

DOCUMENTATION_OPTIONS.URL_ROOT + dirname +

highlightstring + item[2]).html(item[1]));

} else {

// normal html builders

listItem.append($('<a/>').attr('href',

item[0] + DOCUMENTATION_OPTIONS.FILE_SUFFIX +

highlightstring + item[2]).html(item[1]));

}

if (item[3]) {

listItem.append($('<span> (' + item[3] + ')</span>'));

Search.output.append(listItem);

listItem.slideDown(5, function() {

displayNextItem();

});

} else if (DOCUMENTATION_OPTIONS.HAS_SOURCE) {

$.ajax({url: DOCUMENTATION_OPTIONS.URL_ROOT + item[0] + DOCUMENTATION_OPTIONS.FILE_SUFFIX,

dataType: "text",

complete: function(jqxhr, textstatus) {

var data = jqxhr.responseText;

if (data !== '' && data !== undefined) {

listItem.append(Search.makeSearchSummary(data, searchterms, hlterms));

}

Search.output.append(listItem);

listItem.slideDown(5, function() {

displayNextItem();

});

}});

} else {

// no source available, just display title

Search.output.append(listItem);

listItem.slideDown(5, function() {

displayNextItem();

});

}

// search finished, update title and status message

else {

Search.stopPulse();

Search.title.text(_('Search Results'));

if (!resultCount)

Search.status.text(_('Your search did not match any documents. Please make sure that all words are spelled correctly and that you\'ve selected enough categories.'));

else

Search.status.text(_('Search finished, found %s page(s) matching the search query.').replace('%s', resultCount));

Search.status.fadeIn(500);

}

displayNextItem();

/**

* search for object names

performObjectSearch : function(object, otherterms) {

var filenames = this._index.filenames;

var docnames = this._index.docnames;

var objects = this._index.objects;

var objnames = this._index.objnames;

var titles = this._index.titles;

var i;

var results = [];

for (var prefix in objects) {

for (var name in objects[prefix]) {

var fullname = (prefix ? prefix + '.' : '') + name;

var fullnameLower = fullname.toLowerCase()

if (fullnameLower.indexOf(object) > -1) {

var score = 0;

var parts = fullnameLower.split('.');

// check for different match types: exact matches of full name or

// "last name" (i.e. last dotted part)

if (fullnameLower == object || parts[parts.length - 1] == object) {

score += Scorer.objNameMatch;

// matches in last name

} else if (parts[parts.length - 1].indexOf(object) > -1) {

score += Scorer.objPartialMatch;

}

var match = objects[prefix][name];

var objname = objnames[match[1]][2];

var title = titles[match[0]];

// If more than one term searched for, we require other words to be

// found in the name/title/description

if (otherterms.length > 0) {

var haystack = (prefix + ' ' + name + ' ' +

objname + ' ' + title).toLowerCase();

var allfound = true;

for (i = 0; i < otherterms.length; i++) {

if (haystack.indexOf(otherterms[i]) == -1) {

allfound = false;

break;

}

if (!allfound) {

continue;

}

var descr = objname + _(', in ') + title;

var anchor = match[3];

if (anchor === '')

anchor = fullname;

else if (anchor == '-')

anchor = objnames[match[1]][1] + '-' + fullname;

// add custom score for some objects according to scorer

if (Scorer.objPrio.hasOwnProperty(match[2])) {

score += Scorer.objPrio[match[2]];

} else {

score += Scorer.objPrioDefault;

}

results.push([docnames[match[0]], fullname, '#'+anchor, descr, score, filenames[match[0]]]);

}

return results;

/**

* search for full-text terms in the index

performTermsSearch : function(searchterms, excluded, terms, titleterms) {

var docnames = this._index.docnames;

var filenames = this._index.filenames;

var titles = this._index.titles;

var i, j, file;

var fileMap = {};

var scoreMap = {};

var results = [];

// perform the search on the required terms

for (i = 0; i < searchterms.length; i++) {

var word = searchterms[i];

var files = [];

var _o = [

{files: terms[word], score: Scorer.term},

{files: titleterms[word], score: Scorer.title}

];

// add support for partial matches

if (word.length > 2) {

for (var w in terms) {

if (w.match(word) && !terms[word]) {

_o.push({files: terms[w], score: Scorer.partialTerm})

}

for (var w in titleterms) {

if (w.match(word) && !titleterms[word]) {

_o.push({files: titleterms[w], score: Scorer.partialTitle})

}

// no match but word was a required one

if ($u.every(_o, function(o){return o.files === undefined;})) {

break;

}

// found search word in contents

$u.each(_o, function(o) {

var _files = o.files;

if (_files === undefined)

return

if (_files.length === undefined)

_files = [_files];

files = files.concat(_files);

// set score for the word in each file to Scorer.term

for (j = 0; j < _files.length; j++) {

file = _files[j];

if (!(file in scoreMap))

scoreMap[file] = {}

scoreMap[file][word] = o.score;

}

});

// create the mapping

for (j = 0; j < files.length; j++) {

file = files[j];

if (file in fileMap)

fileMap[file].push(word);

else

fileMap[file] = [word];

}

// now check if the files don't contain excluded terms

for (file in fileMap) {

var valid = true;

// check if all requirements are matched

var filteredTermCount = // as search terms with length < 3 are discarded: ignore

searchterms.filter(function(term){return term.length > 2}).length

if (

fileMap[file].length != searchterms.length &&

fileMap[file].length != filteredTermCount

) continue;

// ensure that none of the excluded terms is in the search result

for (i = 0; i < excluded.length; i++) {

if (terms[excluded[i]] == file ||

titleterms[excluded[i]] == file ||

$u.contains(terms[excluded[i]] || [], file) ||

$u.contains(titleterms[excluded[i]] || [], file)) {

valid = false;

break;

}

// if we have still a valid result we can add it to the result list

if (valid) {

// select one (max) score for the file.

// for better ranking, we should calculate ranking by using words statistics like basic tf-idf...

var score = $u.max($u.map(fileMap[file], function(w){return scoreMap[file][w]}));

results.push([docnames[file], titles[file], '', null, score, filenames[file]]);

}

return results;

/**

* helper function to return a node containing the

* search summary for a given text. keywords is a list

* of stemmed words, hlwords is the list of normal, unstemmed

* words. the first one is used to find the occurrence, the

* latter for highlighting it.

makeSearchSummary : function(htmlText, keywords, hlwords) {

var text = Search.htmlToText(htmlText);

var textLower = text.toLowerCase();

var start = 0;

$.each(keywords, function() {

var i = textLower.indexOf(this.toLowerCase());

if (i > -1)

start = i;

});

start = Math.max(start - 120, 0);

var excerpt = ((start > 0) ? '...' : '') +

$.trim(text.substr(start, 240)) +

((start + 240 - text.length) ? '...' : '');

var rv = $('<div class="context"></div>').text(excerpt);

$.each(hlwords, function() {

rv = rv.highlightText(this, 'highlighted');

});

return rv;

}

};

$(document).ready(function() {

Search.init();

});

ffmpeg-python/doc/html/_static/searchtools.js at master · outflows/ffmpeg-python · GitHub

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