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third_party/simplejson/docs/_static/searchtools.js

Index: third_party/simplejson/docs/_static/searchtools.js
diff --git a/third_party/simplejson/docs/_static/searchtools.js b/third_party/simplejson/docs/_static/searchtools.js
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+/**
+ * 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 occurance, the
+ * latter for highlighting it.
+ */
+jQuery.makeSearchSummary = function(text, keywords, hlwords) {
+    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);
+    $.each(hlwords, function() {
+            rv = rv.highlightText(this, 'highlight');
+        });
+    return rv;
+}
+
+/**
+ * Porter Stemmer
+ */
+var PorterStemmer = function() {
+
+    var step2list = {
+        ational: 'ate',
+        tional: 'tion',
+        enci: 'ence',
+        anci: 'ance',
+        izer: 'ize',
+        bli: 'ble',
+        alli: 'al',
+        entli: 'ent',
+        eli: 'e',
+        ousli: 'ous',
+        ization: 'ize',
+        ation: 'ate',
+        ator: 'ate',
+        alism: 'al',
+        iveness: 'ive',
+        fulness: 'ful',
+        ousness: 'ous',
+        aliti: 'al',
+        iviti: 'ive',
+        biliti: 'ble',
+        logi: 'log'
+    };
+
+    var step3list = {
+        icate: 'ic',
+        ative: '',
+        alize: 'al',
+        iciti: 'ic',
+        ical: 'ic',
+        ful: '',
+        ness: ''
+    };
+
+    var c = "[^aeiou]";          // consonant
+    var v = "[aeiouy]";          // vowel
+    var C = c + "[^aeiouy]*";    // consonant sequence
+    var V = v + "[aeiou]*";      // vowel sequence
+
+    var mgr0 = "^(" + C + ")?" + V + C;                      // [C]VC... is m>0
+    var meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$";    // [C]VC[V] is m=1
+    var mgr1 = "^(" + C + ")?" + V + C + V + C;              // [C]VCVC... is m>1
+    var s_v   = "^(" + C + ")?" + v;                        // vowel in stem
+
+    this.stemWord = function (w) {
+        var stem;
+        var suffix;
+        var firstch;
+        var origword = w;
+
+        if (w.length < 3) {
+            return w;
+        }
+
+        var re;
+        var re2;
+        var re3;
+        var re4;
+
+        firstch = w.substr(0,1);
+        if (firstch == "y") {
+            w = firstch.toUpperCase() + w.substr(1);
+        }
+
+        // Step 1a
+        re = /^(.+?)(ss|i)es$/;
+        re2 = /^(.+?)([^s])s$/;
+
+        if (re.test(w)) {
+            w = w.replace(re,"$1$2");
+        }
+        else if (re2.test(w)) {
+            w = w.replace(re2,"$1$2");
+        }
+
+        // Step 1b
+        re = /^(.+?)eed$/;
+        re2 = /^(.+?)(ed|ing)$/;
+        if (re.test(w)) {
+            var fp = re.exec(w);
+            re = new RegExp(mgr0);
+            if (re.test(fp[1])) {
+                re = /.$/;
+                w = w.replace(re,"");
+            }
+        }
+        else if (re2.test(w)) {
+            var fp = re2.exec(w);
+            stem = fp[1];
+            re2 = new RegExp(s_v);
+            if (re2.test(stem)) {
+                w = stem;
+                re2 = /(at|bl|iz)$/;
+                re3 = new RegExp("([^aeiouylsz])\\1$");
+                re4 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+                if (re2.test(w)) {
+                    w = w + "e";
+                }
+                else if (re3.test(w)) {
+                    re = /.$/; w = w.replace(re,"");
+                }
+                else if (re4.test(w)) {
+                    w = w + "e";
+                }
+            }
+        }
+
+        // Step 1c
+        re = /^(.+?)y$/;
+        if (re.test(w)) {
+            var fp = re.exec(w);
+            stem = fp[1];
+            re = new RegExp(s_v);
+            if (re.test(stem)) { w = stem + "i"; }
+        }
+
+        // Step 2
+        re = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
+        if (re.test(w)) {
+            var fp = re.exec(w);
+            stem = fp[1];
+            suffix = fp[2];
+            re = new RegExp(mgr0);
+            if (re.test(stem)) {
+                w = stem + step2list[suffix];
+            }
+        }
+
+        // Step 3
+        re = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
+        if (re.test(w)) {
+            var fp = re.exec(w);
+            stem = fp[1];
+            suffix = fp[2];
+            re = new RegExp(mgr0);
+            if (re.test(stem)) {
+                w = stem + step3list[suffix];
+            }
+        }
+
+        // Step 4
+        re = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
+        re2 = /^(.+?)(s|t)(ion)$/;
+        if (re.test(w)) {
+            var fp = re.exec(w);
+            stem = fp[1];
+            re = new RegExp(mgr1);
+            if (re.test(stem)) {
+                w = stem;
+            }
+        }
+        else if (re2.test(w)) {
+            var fp = re2.exec(w);
+            stem = fp[1] + fp[2];
+            re2 = new RegExp(mgr1);
+            if (re2.test(stem)) {
+                w = stem;
+            }
+        }
+
+        // Step 5
+        re = /^(.+?)e$/;
+        if (re.test(w)) {
+            var fp = re.exec(w);
+            stem = fp[1];
+            re = new RegExp(mgr1);
+            re2 = new RegExp(meq1);
+            re3 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+            if (re.test(stem) || (re2.test(stem) && !(re3.test(stem)))) {
+                w = stem;
+            }
+        }
+        re = /ll$/;
+        re2 = new RegExp(mgr1);
+        if (re.test(w) && re2.test(w)) {
+            re = /.$/;
+            w = w.replace(re,"");
+        }
+
+        // and turn initial Y back to y
+        if (firstch == "y") {
+            w = firstch.toLowerCase() + w.substr(1);
+        }
+        return w;
+    }
+}
+
+
+
+/**
+ * Search Module
+ */
+var Search = {
+
+    init : function() {
+        var params = $.getQueryParameters();
+        if (params.q) {
+            var query = params.q[0];
+            $('input[@name="q"]')[0].value = query;
+            this.performSearch(query);
+        }
+    },
+
+    /**
+     * perform a search for something
+     */
+    performSearch : function(query) {
+        // create the required interface elements
+        var out = $('#search-results');
+        var title = $('<h2>Searching</h2>').appendTo(out);
+        var dots = $('<span></span>').appendTo(title);
+        var status = $('<p style="display: none"></p>').appendTo(out);
+        var output = $('<ul class="search"/>').appendTo(out);
+
+        // spawn a background runner for updating the dots
+        // until the search has finished
+        var pulseStatus = 0;
+        function pulse() {
+            pulseStatus = (pulseStatus + 1) % 4;
+            var dotString = '';
+            for (var i = 0; i < pulseStatus; i++) {
+                dotString += '.';
+            }
+            dots.text(dotString);
+            if (pulseStatus > -1) {
+                window.setTimeout(pulse, 500);
+            }
+        };
+        pulse();
+
+        // stem the searchwords and add them to the
+        // correct list
+        var stemmer = new PorterStemmer();
+        var searchwords = [];
+        var excluded = [];
+        var hlwords = [];
+        var tmp = query.split(/\s+/);
+        for (var i = 0; i < tmp.length; i++) {
+            // stem the word
+            var word = stemmer.stemWord(tmp[i]).toLowerCase();
+            // select the correct list
+            if (word[0] == '-') {
+                var toAppend = excluded;
+                word = word.substr(1);
+            }
+            else {
+                var toAppend = searchwords;
+                hlwords.push(tmp[i].toLowerCase());
+            }
+            // only add if not already in the list
+            if (!$.contains(toAppend, word)) {
+                toAppend.push(word);
+            }
+        };
+        var highlightstring = '?highlight=' + $.urlencode(hlwords.join(" "));
+
+        console.debug('SEARCH: searching for:');
+        console.info('required: ', searchwords);
+        console.info('excluded: ', excluded);
+
+        // fetch searchindex and perform search
+        $.getJSON('searchindex.json', function(data) {
+
+                // prepare search
+                var filenames = data[0];
+                var titles = data[1]
+                var words = data[2];
+                var fileMap = {};
+                var files = null;
+
+                // perform the search on the required words
+                for (var i = 0; i < searchwords.length; i++) {
+                    var word = searchwords[i];
+                    // no match but word was a required one
+                    if ((files = words[word]) == null) {
+                        break;
+                    }
+                    // create the mapping
+                    for (var j = 0; j < files.length; j++) {
+                        var file = files[j];
+                        if (file in fileMap) {
+                            fileMap[file].push(word);
+                        }
+                        else {
+                            fileMap[file] = [word];
+                        }
+                    }
+                }
+
+                // now check if the files are in the correct
+                // areas and if the don't contain excluded words
+                var results = [];
+                for (var file in fileMap) {
+                    var valid = true;
+
+                    // check if all requirements are matched
+                    if (fileMap[file].length != searchwords.length) {
+                        continue;
+                    }
+                    // ensure that none of the excluded words is in the
+                    // search result.
+                    for (var i = 0; i < excluded.length; i++) {
+                        if ($.contains(words[excluded[i]] || [], file)) {
+                            valid = false;
+                            break;
+                        }
+                    }
+
+                    // if we have still a valid result we can add it
+                    // to the result list
+                    if (valid) {
+                        results.push([filenames[file], titles[file]]);
+                    }
+                }
+
+                // delete unused variables in order to not waste
+                // memory until list is retrieved completely
+                delete filenames, titles, words, data;
+
+                // now sort the results by title
+                results.sort(function(a, b) {
+                        var left = a[1].toLowerCase();
+                        var right = b[1].toLowerCase();
+                        return (left > right) ? -1 : ((left < right) ? 1 : 0);
+                    });
+
+                // 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 = $('<li style="display:none"></li>');
+                        listItem.append($('<a/>').attr(
+                            'href',
+                            item[0] + DOCUMENTATION_OPTIONS.FILE_SUFFIX +
+                            highlightstring).html(item[1]));
+                        $.get('_sources/' + item[0] + '.txt', function(data) {
+                                listItem.append($.makeSearchSummary(data, searchwords, hlwords));
+                                output.append(listItem);
+                                listItem.slideDown(10, function() {
+                                        displayNextItem();
+                                    });
+                            });
+                    }
+                    // search finished, update title and status message
+                    else {
+                        pulseStatus = -1;
+                        title.text('Search Results');
+                        if (!resultCount) {
+                            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 {
+                            status.text('Search finished, found ' + resultCount +
+                                        ' page' + (resultCount != 1 ? 's' : '') +
+                                        ' matching the search query.');
+                        }
+                        status.fadeIn(500);
+                    }
+                }
+                displayNextItem();
+            });
+    }
+
+}
+
+$(document).ready(function() {
+        Search.init();
+    });