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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 12x 12x 12x 12x 12x 1x 2x 4x 1x 18x 1x 2x 17x 18x 1x 2x 17x 20x 20x 20x 20x 20x 20x 20x 82x 102x 102x 20x 103x 103x 103x 20x 103x 103x 103x 103x 499x 561x 561x 20x 40x 40x 164x 12x 12x 12x 1x 12x | import { I18nParser } from './i18n.parser'; import { I18N_PARSER_OPTIONS } from '../i18n.constants'; import { Inject, OnModuleDestroy } from '@nestjs/common'; import * as path from 'path'; import * as fs from 'fs'; import { getDirectories, getFiles } from '../utils/file'; import * as flat from 'flat'; import { promisify } from 'util'; import { I18nTranslation } from '../interfaces/i18n-translation.interface'; import { Observable, Subject, merge as ObservableMerge, from as ObservableFrom, } from 'rxjs'; import * as chokidar from 'chokidar'; import { switchMap } from 'rxjs/operators'; const readFile = promisify(fs.readFile); const exists = promisify(fs.exists); export interface I18nJsonParserOptions { path: string; filePattern?: string; watch?: boolean; } const defaultOptions: Partial<I18nJsonParserOptions> = { filePattern: '*.json', watch: false, }; export class I18nJsonParser extends I18nParser implements OnModuleDestroy { private watcher?: chokidar.FSWatcher; private events: Subject<string> = new Subject(); constructor( @Inject(I18N_PARSER_OPTIONS) private options: I18nJsonParserOptions, ) { super(); this.options = this.sanitizeOptions(options); if (this.options.watch) { this.watcher = chokidar .watch(this.options.path, { ignoreInitial: true }) .on('all', (event) => { this.events.next(event); }); } } async onModuleDestroy() { if (this.watcher) { await this.watcher.close(); } } async languages(): Promise<string[] | Observable<string[]>> { if (this.options.watch) { return ObservableMerge( ObservableFrom(this.parseLanguages()), this.events.pipe(switchMap(() => this.parseLanguages())), ); } return this.parseLanguages(); } async parse(): Promise<I18nTranslation | Observable<I18nTranslation>> { if (this.options.watch) { return ObservableMerge( ObservableFrom(this.parseTranslations()), this.events.pipe(switchMap(() => this.parseTranslations())), ); } return this.parseTranslations(); } private async parseTranslations(): Promise<I18nTranslation> { const i18nPath = path.normalize(this.options.path + path.sep); const translations: I18nTranslation = {}; Iif (!(await exists(i18nPath))) { throw new Error(`i18n path (${i18nPath}) cannot be found`); } Iif (!this.options.filePattern.match(/\*\.[A-z]+/)) { throw new Error( `filePattern should be formatted like: *.json, *.txt, *.custom etc`, ); } const languages = await this.parseLanguages(); const pattern = new RegExp( '.' + this.options.filePattern.replace('.', '.'), ); const files = await [ ...languages.map((l) => path.join(i18nPath, l)), i18nPath, ].reduce(async (f: Promise<string[]>, p: string) => { (await f).push(...(await getFiles(p, pattern))); return f; }, Promise.resolve([])); for (const file of files) { let global = false; const key = path .dirname(path.relative(i18nPath, file)) .split(path.sep)[0]; if (key === '.') { global = true; } const data = JSON.parse(await readFile(file, 'utf8')); const prefix = path.basename(file).split('.')[0]; const flatData = flat.flatten(data); for (const property of Object.keys(flatData)) { [...(global ? languages : [key])].forEach((lang) => { translations[lang] = !!translations[lang] ? translations[lang] : {}; translations[lang][`${global ? '' : `${prefix}.`}${property}`] = flatData[property]; }); } } return translations; } private async parseLanguages(): Promise<string[]> { const i18nPath = path.normalize(this.options.path + path.sep); return (await getDirectories(i18nPath)).map((dir) => path.relative(i18nPath, dir), ); } private sanitizeOptions(options: I18nJsonParserOptions) { options = { ...defaultOptions, ...options }; options.path = path.normalize(options.path + path.sep); if (!options.filePattern.startsWith('*.')) { options.filePattern = '*.' + options.filePattern; } return options; } } |