pdf-poppler/index.js

Convert PDF files into images using Poppler with promises. It achieves 10x faster performance compared to other PDF converters. Poppler library attached inside statically, so it has not require installation of poppler.

const os = require('os');
const path = require('path');
const {spawn} = require('child_process');

let platform = os.platform();
if (!['darwin', 'win32'].includes(platform)) {
    console.error(`${platform} is NOT supported.`);
    process.exit(1);
}

let popplerPath;

let execOptions = {
    encoding: 'utf8',
    maxBuffer: 5000*1024,
    shell: false
};

if (platform === 'win32') {
    popplerPath = path.join(
        __dirname,
        'lib',
        'win',
        'poppler-0.51',
        'bin'
    );

    // for electron ASAR
    popplerPath = popplerPath.replace(".asar", ".asar.unpacked");
}
else if (platform === 'darwin') {
    popplerPath = path.join(
        __dirname,
        'lib',
        'osx',
        'poppler-0.66',
        'bin'
    );

    let dyldPath = path.join(
        __dirname,
        'lib',
        'osx',
        'poppler-0.66',
        'lib'
    );

    let libRoot = path.join(
        __dirname,
        'lib',
        'osx'
    );

    // for electron ASAR
    popplerPath = popplerPath.replace(".asar", ".asar.unpacked");
    dyldPath = dyldPath.replace(".asar", ".asar.unpacked");
    libRoot = libRoot.replace(".asar", ".asar.unpacked");

    // make files executable
    spawn('chmod', ['-R', '755', `${libRoot}`]);

    // change name for every executables
    spawn('install_name_tool', ['-change', `/usr/local/Cellar/poppler/0.66.0/lib/libpoppler.77.dylib`, `${path.join(dyldPath, 'libpoppler.77.0.0.dylib')}`, `${path.join(popplerPath, 'pdfinfo')}`]);
    spawn('install_name_tool', ['-change', `/usr/local/Cellar/poppler/0.66.0/lib/libpoppler.77.dylib`, `${path.join(dyldPath, 'libpoppler.77.0.0.dylib')}`, `${path.join(popplerPath, 'pdftocairo')}`]);
    spawn('install_name_tool', ['-change', `/usr/local/Cellar/poppler/0.66.0/lib/libpoppler.77.dylib`, `${path.join(dyldPath, 'libpoppler.77.0.0.dylib')}`, `${path.join(popplerPath, 'pdfimages')}`]);
}
else {
    console.error(`${platform} is NOT supported.`);
    process.exit(1);
}

module.exports.path = popplerPath;
module.exports.exec_options = execOptions;
module.exports.info = require('./lib/info');
module.exports.imgdata = require('./lib/imgdata');
module.exports.convert = require('./lib/convert');