docsify/lib/plugins/search.js
2018-03-03 22:57:34 +08:00

330 lines
9.8 KiB
JavaScript
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(function () {
var INDEXS = {};
var helper;
function escapeHtml(string) {
var entityMap = {
'&': '&',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
'\'': '&#39;',
'/': '&#x2F;'
};
return String(string).replace(/[&<>"'/]/g, function (s) { return entityMap[s]; })
}
function getAllPaths(router) {
var paths = [];
helper.dom.findAll('a:not([data-nosearch])').forEach(function (node) {
var href = node.href;
var originHref = node.getAttribute('href');
var path = router.parse(href).path;
if (
path &&
paths.indexOf(path) === -1 &&
!Docsify.util.isAbsolutePath(originHref)
) {
paths.push(path);
}
});
return paths
}
function saveData(maxAge) {
localStorage.setItem('docsify.search.expires', Date.now() + maxAge);
localStorage.setItem('docsify.search.index', JSON.stringify(INDEXS));
}
function genIndex(path, content, router, depth) {
if ( content === void 0 ) content = '';
var tokens = window.marked.lexer(content);
var slugify = window.Docsify.slugify;
var index = {};
var slug;
tokens.forEach(function (token) {
if (token.type === 'heading' && token.depth <= depth) {
slug = router.toURL(path, {id: slugify(token.text)});
index[slug] = {slug: slug, title: token.text, body: ''};
} else {
if (!slug) {
return
}
if (!index[slug]) {
index[slug] = {slug: slug, title: '', body: ''};
} else if (index[slug].body) {
index[slug].body += '\n' + (token.text || '');
} else {
index[slug].body = token.text;
}
}
});
slugify.clear();
return index
}
/**
* @param {String} query
* @returns {Array}
*/
function search(query) {
var matchingResults = [];
var data = [];
Object.keys(INDEXS).forEach(function (key) {
data = data.concat(Object.keys(INDEXS[key]).map(function (page) { return INDEXS[key][page]; }));
});
query = query.trim();
var keywords = query.split(/[\s\-\\/]+/);
if (keywords.length !== 1) {
keywords = [].concat(query, keywords);
}
var loop = function ( i ) {
var post = data[i];
var isMatch = false;
var resultStr = '';
var postTitle = post.title && post.title.trim();
var postContent = post.body && post.body.trim();
var postUrl = post.slug || '';
if (postTitle && postContent) {
keywords.forEach(function (keyword) {
// From https://github.com/sindresorhus/escape-string-regexp
var regEx = new RegExp(
keyword.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&'),
'gi'
);
var indexTitle = -1;
var indexContent = -1;
indexTitle = postTitle && postTitle.search(regEx);
indexContent = postContent && postContent.search(regEx);
if (indexTitle < 0 && indexContent < 0) {
isMatch = false;
} else {
isMatch = true;
if (indexContent < 0) {
indexContent = 0;
}
var start = 0;
var end = 0;
start = indexContent < 11 ? 0 : indexContent - 10;
end = start === 0 ? 70 : indexContent + keyword.length + 60;
if (end > postContent.length) {
end = postContent.length;
}
var matchContent =
'...' +
escapeHtml(postContent)
.substring(start, end)
.replace(regEx, ("<em class=\"search-keyword\">" + keyword + "</em>")) +
'...';
resultStr += matchContent;
}
});
if (isMatch) {
var matchingPost = {
title: escapeHtml(postTitle),
content: resultStr,
url: postUrl
};
matchingResults.push(matchingPost);
}
}
};
for (var i = 0; i < data.length; i++) loop( i );
return matchingResults
}
function init$1(config, vm) {
helper = Docsify;
var isAuto = config.paths === 'auto';
var isExpired = localStorage.getItem('docsify.search.expires') < Date.now();
INDEXS = JSON.parse(localStorage.getItem('docsify.search.index'));
if (isExpired) {
INDEXS = {};
} else if (!isAuto) {
return
}
var paths = isAuto ? getAllPaths(vm.router) : config.paths;
var len = paths.length;
var count = 0;
paths.forEach(function (path) {
if (INDEXS[path]) {
return count++
}
helper
.get(vm.router.getFile(path), false, vm.config.requestHeaders)
.then(function (result) {
INDEXS[path] = genIndex(path, result, vm.router, config.depth);
len === ++count && saveData(config.maxAge);
});
});
}
var NO_DATA_TEXT = '';
function style() {
var code = "\n.sidebar {\n padding-top: 0;\n}\n\n.search {\n margin-bottom: 20px;\n padding: 6px;\n border-bottom: 1px solid #eee;\n}\n\n.search .input-wrap {\n display: flex;\n align-items: center;\n}\n\n.search .results-panel {\n display: none;\n}\n\n.search .results-panel.show {\n display: block;\n}\n\n.search input {\n outline: none;\n border: none;\n width: 100%;\n padding: 0 7px;\n line-height: 36px;\n font-size: 14px;\n}\n\n.search input::-webkit-search-decoration,\n.search input::-webkit-search-cancel-button,\n.search input {\n -webkit-appearance: none;\n -moz-appearance: none;\n appearance: none;\n}\n.search .clear-button {\n width: 36px;\n text-align: right;\n display: none;\n}\n\n.search .clear-button.show {\n display: block;\n}\n\n.search .clear-button svg {\n transform: scale(.5);\n}\n\n.search h2 {\n font-size: 17px;\n margin: 10px 0;\n}\n\n.search a {\n text-decoration: none;\n color: inherit;\n}\n\n.search .matching-post {\n border-bottom: 1px solid #eee;\n}\n\n.search .matching-post:last-child {\n border-bottom: 0;\n}\n\n.search p {\n font-size: 14px;\n overflow: hidden;\n text-overflow: ellipsis;\n display: -webkit-box;\n -webkit-line-clamp: 2;\n -webkit-box-orient: vertical;\n}\n\n.search p.empty {\n text-align: center;\n}";
Docsify.dom.style(code);
}
function tpl(opts, defaultValue) {
if ( defaultValue === void 0 ) defaultValue = '';
var html =
"<div class=\"input-wrap\">\n <input type=\"search\" value=\"" + defaultValue + "\" />\n <div class=\"clear-button\">\n <svg width=\"26\" height=\"24\">\n <circle cx=\"12\" cy=\"12\" r=\"11\" fill=\"#ccc\" />\n <path stroke=\"white\" stroke-width=\"2\" d=\"M8.25,8.25,15.75,15.75\" />\n <path stroke=\"white\" stroke-width=\"2\"d=\"M8.25,15.75,15.75,8.25\" />\n </svg>\n </div>\n </div>\n <div class=\"results-panel\"></div>\n </div>";
var el = Docsify.dom.create('div', html);
var aside = Docsify.dom.find('aside');
Docsify.dom.toggleClass(el, 'search');
Docsify.dom.before(aside, el);
}
function doSearch(value) {
var $search = Docsify.dom.find('div.search');
var $panel = Docsify.dom.find($search, '.results-panel');
var $clearBtn = Docsify.dom.find($search, '.clear-button');
if (!value) {
$panel.classList.remove('show');
$clearBtn.classList.remove('show');
$panel.innerHTML = '';
return
}
var matchs = search(value);
var html = '';
matchs.forEach(function (post) {
html += "<div class=\"matching-post\">\n<a href=\"" + (post.url) + "\">\n<h2>" + (post.title) + "</h2>\n<p>" + (post.content) + "</p>\n</a>\n</div>";
});
$panel.classList.add('show');
$clearBtn.classList.add('show');
$panel.innerHTML = html || ("<p class=\"empty\">" + NO_DATA_TEXT + "</p>");
}
function bindEvents() {
var $search = Docsify.dom.find('div.search');
var $input = Docsify.dom.find($search, 'input');
var $inputWrap = Docsify.dom.find($search, '.input-wrap');
var timeId;
// Prevent to Fold sidebar
Docsify.dom.on(
$search,
'click',
function (e) { return e.target.tagName !== 'A' && e.stopPropagation(); }
);
Docsify.dom.on($input, 'input', function (e) {
clearTimeout(timeId);
timeId = setTimeout(function (_) { return doSearch(e.target.value.trim()); }, 100);
});
Docsify.dom.on($inputWrap, 'click', function (e) {
// Click input outside
if (e.target.tagName !== 'INPUT') {
$input.value = '';
doSearch();
}
});
}
function updatePlaceholder(text, path) {
var $input = Docsify.dom.getNode('.search input[type="search"]');
if (!$input) {
return
}
if (typeof text === 'string') {
$input.placeholder = text;
} else {
var match = Object.keys(text).filter(function (key) { return path.indexOf(key) > -1; })[0];
$input.placeholder = text[match];
}
}
function updateNoData(text, path) {
if (typeof text === 'string') {
NO_DATA_TEXT = text;
} else {
var match = Object.keys(text).filter(function (key) { return path.indexOf(key) > -1; })[0];
NO_DATA_TEXT = text[match];
}
}
function init(opts, vm) {
var keywords = vm.router.parse().query.s;
style();
tpl(opts, keywords);
bindEvents();
keywords && setTimeout(function (_) { return doSearch(keywords); }, 500);
}
function update(opts, vm) {
updatePlaceholder(opts.placeholder, vm.route.path);
updateNoData(opts.noData, vm.route.path);
}
var CONFIG = {
placeholder: 'Type to search',
noData: 'No Results!',
paths: 'auto',
depth: 2,
maxAge: 86400000 // 1 day
};
var install = function (hook, vm) {
var util = Docsify.util;
var opts = vm.config.search || CONFIG;
if (Array.isArray(opts)) {
CONFIG.paths = opts;
} else if (typeof opts === 'object') {
CONFIG.paths = Array.isArray(opts.paths) ? opts.paths : 'auto';
CONFIG.maxAge = util.isPrimitive(opts.maxAge) ? opts.maxAge : CONFIG.maxAge;
CONFIG.placeholder = opts.placeholder || CONFIG.placeholder;
CONFIG.noData = opts.noData || CONFIG.noData;
CONFIG.depth = opts.depth || CONFIG.depth;
}
var isAuto = CONFIG.paths === 'auto';
hook.mounted(function (_) {
init(CONFIG, vm);
!isAuto && init$1(CONFIG, vm);
});
hook.doneEach(function (_) {
update(CONFIG, vm);
isAuto && init$1(CONFIG, vm);
});
};
$docsify.plugins = [].concat(install, $docsify.plugins);
}());