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Rackover
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Mar 6, 2021
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| const maxSummaryLength = 40; | ||
| const backwardLength = 8; | ||
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| module.exports = async function (req, response){ | ||
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| const body = req.query; | ||
| const miss = utility.getMissingFields(body, ["term"]) | ||
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| if (miss.length > 0 || body.term.length <= 0){ | ||
| response.error = { | ||
| data: 'No search term was given' | ||
| }; | ||
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| return response; | ||
| } | ||
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| const results = await searchEngine.search(body.term); | ||
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| for (i in results){ | ||
| let wholePage = results[i].content; | ||
| let summary = wholePage | ||
| .slice(Math.max(0, results[i].position-backwardLength)); | ||
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| const originalLength = summary.length; | ||
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| summary = summary | ||
| .slice(0, Math.min(maxSummaryLength, summary.length)) | ||
| .join(" "); | ||
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| if (summary.length < originalLength){ | ||
| summary += "..."; | ||
| } | ||
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| results[i].summary = summary; | ||
| } | ||
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| response.searchTerm = body.term; | ||
| response.results = results; | ||
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| return response; | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
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| const minWordLength = 4; | ||
| let index = {}; | ||
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| module.exports = { | ||
| updateIndexForPage: updateIndexForPage, | ||
| updateIndexForPageIfNecessary: updateIndexForPageIfNecessary, | ||
| removePageFromIndex: removePageFromIndex, | ||
| search: search | ||
| } | ||
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| async function updateIndexForPageIfNecessary(virtualPath, title, content){ | ||
| if (index[virtualPath] == undefined || index[virtualPath].length != content.length){ | ||
| logger.debug(`Updating search index for virtual path ${virtualPath}`); | ||
| await updateIndexForPage(virtualPath, title, content); | ||
| } | ||
| } | ||
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| async function updateIndexForPage(virtualPath, title, content){ | ||
| if (index[virtualPath] != undefined){ | ||
| removePageFromIndex(virtualPath); | ||
| } | ||
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| let entry = { | ||
| length: content.length, | ||
| title: title, | ||
| words: [] | ||
| }; | ||
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| let pageWords = content | ||
| .replace(/[^A-Za-zÀ-ÖØ-öø-ÿ ]/gi, '') | ||
| .split(" ") | ||
| .filter((o) => o.length >= minWordLength) | ||
| .map((o) => o.toLowerCase()); | ||
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| entry.words = pageWords; | ||
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| index[virtualPath] = entry; | ||
| } | ||
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| function removePageFromIndex(virtualPath){ | ||
| logger.debug(`Removing search index for virtual path ${virtualPath}`); | ||
| delete index[virtualPath]; | ||
| } | ||
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| function search(term){ | ||
| const microtime = (Date.now() % 1000) / 1000; | ||
| logger.info(`Searching for term [${term}] in the index...`); | ||
|
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| return new Promise((resolve, reject) => { | ||
| term = term.toLowerCase(); | ||
| let results = []; | ||
| for (path in index){ | ||
| if (index[path].title.includes(term)){ | ||
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| results.push({ | ||
| virtualPath: path, | ||
| title: index[path].title, | ||
| content: index[path].words, | ||
| position: 0 | ||
| }); | ||
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| continue; | ||
| } | ||
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| for(i in index[path].words){ | ||
| const word = index[path].words[i]; | ||
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| if (word.length < term.length){ | ||
| continue; | ||
| } | ||
|
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| if (word.includes(term)){ | ||
| results.push({ | ||
| virtualPath: path, | ||
| title: index[path].title, | ||
| content: index[path].words | ||
| .map((o)=>{ return o == word ? `<b>${word}</b>` : o; }), | ||
| position: i | ||
| }); | ||
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| break; | ||
| } | ||
| } | ||
| } | ||
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| logger.info(`Found ${results.length} for search [${term}] after ${((Date.now() % 1000) / 1000) - microtime}ms`); | ||
| resolve(results); | ||
| }); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| extends ../layout/default.pug | ||
|
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| block head | ||
| script(src="/res/js/loginForm.js") | ||
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| block content | ||
| h1 Results for "#{searchTerm}" | ||
| each result in results | ||
| h2 | ||
| a(href="/read/"+result.virtualPath) #{result.title} | ||
| p !{result.summary} |
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