@vendure/ngx-translate-extract/compilers/po.compiler.js

Extract strings from projects using ngx-translate

import { po } from 'gettext-parser';
import { TranslationCollection } from '../utils/translation.collection.js';
const GETTEXT_HEADER_ENTRY_MSGID = '';
export class PoCompiler {
    extension = 'po';
    domain = '';
    includeSources = true;
    constructor(options) {
        this.includeSources = options?.poSourceLocation ?? true;
    }
    compile(collection) {
        const translations = Object.create(null);
        for (const [key, entry] of Object.entries(collection.values)) {
            const translation = {
                msgid: key,
                msgstr: entry.value !== null ? [entry.value] : [''],
            };
            if (this.includeSources) {
                translation.comments = { reference: entry.sourceFiles.join('\n') };
            }
            translations[key] = translation;
        }
        const data = {
            charset: 'utf-8',
            headers: {
                'mime-version': '1.0',
                'content-type': 'text/plain; charset=utf-8',
                'content-transfer-encoding': '8bit',
            },
            translations: {
                [this.domain]: translations,
            },
        };
        return po.compile(data, {}).toString('utf8');
    }
    parse(contents) {
        const parsedPo = po.parse(contents, { defaultCharset: 'utf8' });
        const poTranslations = parsedPo.translations?.[this.domain];
        if (!poTranslations) {
            return new TranslationCollection();
        }
        const translationEntries = Object.entries(poTranslations);
        const convertedTranslations = {};
        for (const [msgid, message] of translationEntries) {
            if (msgid === GETTEXT_HEADER_ENTRY_MSGID) {
                continue;
            }
            convertedTranslations[msgid] = {
                value: message.msgstr.at(-1) ?? '',
                sourceFiles: message.comments?.reference?.split('\n') || [],
            };
        }
        return new TranslationCollection(convertedTranslations);
    }
}