genshin-manager/dist/utils/TextMapTransform.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.TextMapTransform = void 0;
const stream_1 = require("stream");
const TextMapFormatError_1 = require("../errors/TextMapFormatError");
/**
 * TextMapTransform
 */
class TextMapTransform extends stream_1.Transform {
    /**
     * Create a TextMapTransform
     * @param language Language
     * @param filterSet Filter set
     */
    constructor(language, filterSet) {
        super();
        this.buffer = Buffer.from('');
        this.firstFlag = true;
        this.language = language;
        this.filterSet = filterSet;
    }
    /**
     * Transform
     * @param chunk Buffer
     * @param encoding Encoding
     * @param callback Callback
     */
    _transform(chunk, encoding, callback) {
        const combinedBuffer = Buffer.concat([this.buffer, chunk]);
        const lineBuffers = this.splitBuffer(combinedBuffer, Buffer.from('\n'));
        this.buffer = lineBuffers.pop() || Buffer.from('');
        if (lineBuffers.length === 0) {
            callback();
            return;
        }
        const lines = lineBuffers.map((buffer) => buffer.toString());
        const isFirstChunk = this.firstFlag && lines[0].startsWith('{');
        if (isFirstChunk)
            this.push('{\n');
        lines.forEach((line) => {
            const matchArray = line.match(/(?<=")([^"\\]|\\.)*?(?=")/g);
            if (!matchArray)
                return;
            const [key, , value] = matchArray;
            if (this.filterSet.has(+key)) {
                if (!this.firstFlag)
                    this.push(',\n');
                this.firstFlag = false;
                this.push(`"${key}":"${value.replace(/\\\\n/g, '\\n')}"`);
            }
        });
        callback();
    }
    /**
     * Flush
     * @param callback Callback
     */
    _flush(callback) {
        this.push('\n' + this.buffer.toString());
        callback();
    }
    /**
     * Final
     * @param callback Callback
     */
    _final(callback) {
        if (!this.buffer.toString().endsWith('}'))
            throw new TextMapFormatError_1.TextMapFormatError(this.language);
        callback();
    }
    splitBuffer(array, separator) {
        const result = [];
        let start = 0;
        let index;
        while ((index = array.indexOf(separator, start)) !== -1) {
            result.push(array.slice(start, index));
            start = index + separator.length;
        }
        result.push(array.slice(start));
        return result;
    }
}
exports.TextMapTransform = TextMapTransform;