@ironsoftware/ironpdf/src/internal/grpc_layer/pdfium/compress.js

IronPDF for Node

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.compressInMemoryStream = exports.compressInMemory = exports.compressAndSaveAs = exports.compressStructTree = exports.compressImage = void 0;
const access_1 = require("../../access");
const util_1 = require("../util");
const stream_1 = require("stream");
const fs_1 = __importDefault(require("fs"));
function compressImage(id, imageQuality, scaleToVisibleSize = false) {
    return __awaiter(this, void 0, void 0, function* () {
        const client = yield access_1.Access.ensureConnection();
        return new Promise((resolve, reject) => {
            client.Pdfium_Compress_CompressImages({
                document: { documentId: id },
                scaleToVisibleSize: scaleToVisibleSize,
                quality: imageQuality,
            }, (err, value) => {
                if (err) {
                    reject(`${err.name}/n${err.message}`);
                }
                else if (value) {
                    (0, util_1.handleEmptyResultP__Output)(value, reject);
                    resolve();
                }
            });
        });
    });
}
exports.compressImage = compressImage;
function compressStructTree(id) {
    return __awaiter(this, void 0, void 0, function* () {
        const client = yield access_1.Access.ensureConnection();
        return new Promise((resolve, reject) => {
            client.Pdfium_Compress_RemoveStructTree({
                document: { documentId: id }
            }, (err, value) => {
                if (err) {
                    reject(`${err.name}/n${err.message}`);
                }
                else if (value) {
                    (0, util_1.handleEmptyResultP__Output)(value, reject);
                    resolve();
                }
            });
        });
    });
}
exports.compressStructTree = compressStructTree;
function compressAndSaveAs(id, outputPath, imageQuality) {
    return __awaiter(this, void 0, void 0, function* () {
        const client = yield access_1.Access.ensureConnection();
        return new Promise((resolve, reject) => {
            const request = Object.assign({ document: { documentId: id }, outputPath: "", password: "" }, (imageQuality !== undefined ? { jpeg: imageQuality } : {}));
            const stream = client.QPdf_Compression_CompressAndSaveAs(request);
            const buffers = [];
            stream.on("data", (data) => {
                if (data.exception) {
                    reject(`${data.exception.message}/n${data.exception.remoteStackTrace}`);
                }
                else if (data.resultChunk) {
                    buffers.push(data.resultChunk);
                }
            });
            stream.on("error", (err) => {
                reject(`${err.name}/n${err.message}`);
            });
            stream.on("end", () => {
                fs_1.default.writeFileSync(outputPath, Buffer.concat(buffers));
                resolve();
            });
        });
    });
}
exports.compressAndSaveAs = compressAndSaveAs;
function compressInMemory(id, imageQuality) {
    return __awaiter(this, void 0, void 0, function* () {
        const client = yield access_1.Access.ensureConnection();
        return new Promise((resolve, reject) => {
            const request = Object.assign({ document: { documentId: id }, outputPath: "", password: "" }, (imageQuality !== undefined ? { jpeg: imageQuality } : {}));
            const stream = client.QPdf_Compression_CompressAndSaveAs(request);
            const buffers = [];
            stream.on("data", (data) => {
                if (data.exception) {
                    reject(`${data.exception.message}/n${data.exception.remoteStackTrace}`);
                }
                else if (data.resultChunk) {
                    buffers.push(data.resultChunk);
                }
            });
            stream.on("error", (err) => {
                reject(`${err.name}/n${err.message}`);
            });
            stream.on("end", () => {
                resolve(Buffer.concat(buffers));
            });
        });
    });
}
exports.compressInMemory = compressInMemory;
function compressInMemoryStream(id, imageQuality) {
    return __awaiter(this, void 0, void 0, function* () {
        const client = yield access_1.Access.ensureConnection();
        const passThrough = new stream_1.PassThrough();
        const request = Object.assign({ document: { documentId: id }, outputPath: "", password: "" }, (imageQuality !== undefined ? { jpeg: imageQuality } : {}));
        const stream = client.QPdf_Compression_CompressAndSaveAs(request);
        stream.on("data", (data) => {
            if (data.exception) {
                passThrough.destroy(new Error(`${data.exception.message}/n${data.exception.remoteStackTrace}`));
            }
            else if (data.resultChunk) {
                passThrough.write(data.resultChunk);
            }
        });
        stream.on("error", (err) => {
            passThrough.destroy(err);
        });
        stream.on("end", () => {
            passThrough.end();
        });
        return passThrough;
    });
}
exports.compressInMemoryStream = compressInMemoryStream;
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