103 lines
2 KiB
JavaScript
103 lines
2 KiB
JavaScript
const { basename } = require('path');
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const { createReadStream, existsSync } = require('fs');
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const { createInterface } = require('readline');
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const GEO_NAME = /[A-Z]\w+\-[^\n]+/;
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function printHelp() {
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console.log(`Usage ${basename(process.argv[1])} LOCALE FILENAME.txt `);
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console.log('Removes repeating words from a word list');
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console.log('\nLocale could be any valid JS locale, for exmaple: en, en-US, etc...');
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}
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function validateInput() {
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if (process.argv.length < 4) {
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printHelp();
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process.exit(1);
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}
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if (!existsSync(process.argv[3])) {
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console.error(`Failure! Could not find file "${process.argv[3]}."`);
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process.exit(2);
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}
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return { fileName: process.argv[3], locale: process.argv[2] };
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}
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function getRegularWordKey(locale, word) {
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if (typeof word !== 'string' || word.length === 0) {
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return '';
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}
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return GEO_NAME.test(word) ? word : word.toLocaleLowerCase(locale);
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}
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function getLowercaseWordKey(locale, word) {
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return getWordkey(word).toLocaleLowerCase(locale);
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}
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function getWordkey(word) {
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if (typeof word !== 'string' || word.length === 0) {
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return '';
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}
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return word;
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}
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async function removeRepeatingWords({ fileName, locale }) {
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const wordMap = {};
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let lineReader = createInterface({ input: createReadStream(fileName) });
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for await (const line of lineReader) {
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wordMap[getLowercaseWordKey(locale, line)] = true;
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}
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lineReader = createInterface({ input: createReadStream(fileName) });
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for await (const line of lineReader) {
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const word = getWordkey(line);
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const lowercaseWord = getLowercaseWordKey(locale, line);
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if (word === '') {
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continue;
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}
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if (word !== lowercaseWord) {
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delete wordMap[lowercaseWord];
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wordMap[word] = true;
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}
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}
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return Object.keys(wordMap).sort();
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}
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function printWords(wordList) {
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if (!Array.isArray(wordList)) {
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return;
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}
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wordList.forEach(w => console.log(w));
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}
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/** main **/
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removeRepeatingWords(validateInput())
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.then(words => printWords(words))
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.catch(e => console.error(e));
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