@bader-nasser/pdftools/dist/commands/merge/index.js

PDF tools to manipulate and process PDF files

import { Args, Flags } from '@oclif/core';
import { globby } from 'globby';
import { addExtension, removeExtension,
// Removing the extension will make the built cli crash
 } from '../../utils.js';
import { BaseCommandWithCompression } from '../../base-command-with-compression.js';
export default class Merge extends BaseCommandWithCompression {
    static aliases = ['m', 'join', 'j'];
    static description = 'Merge PDFs';
    static examples = [
        {
            description: 'Merge all .pdf files',
            command: '<%= config.bin %> <%= command.id %> *.pdf',
        },
        {
            description: 'Merge all .pdf files',
            command: '<%= config.bin %> <%= command.id %> *.pdf -o output.pdf',
        },
        {
            description: 'Merge all .pdf files that start with input- & compress the output',
            command: `<%= config.bin %> <%= command.id %> input-*.pdf -o output.pdf -c`,
        },
        {
            description: 'Merge cover.pdf with all .pdf files that start with input-, and notes.pdf',
            command: `<%= config.bin %> <%= command.id %> cover.pdf input-*.pdf notes.pdf -o output.pdf`,
        },
    ];
    // Todo: revise
    // For variable length arguments,
    // disable argument validation
    static strict = false;
    static args = {
        input: Args.string({
            required: true,
            // multiple: true,
            description: `Input files (e.g. cover.pdf part-*.pdf)`,
        }),
    };
    // https://oclif.io/docs/flags
    static flags = {
        output: Flags.string({
            char: 'o',
            description: 'Output file',
            default: 'merged.pdf',
        }),
        keep: Flags.boolean({
            char: 'k',
            description: `Keep output's name`,
        }),
    };
    async run() {
        // Todo: revise
        const { argv, flags } = await this.parse(Merge);
        const input = argv;
        const { output, compress, keep, 'dry-run': dryRun, silent } = flags;
        let finalOutput = removeExtension(output);
        await this.ensureDirExists(finalOutput);
        if (compress && !keep) {
            finalOutput = `${finalOutput}-compressed`;
        }
        finalOutput = addExtension(finalOutput);
        const files = await globby(input);
        const args = [...files, 'cat', 'output', finalOutput];
        if (compress) {
            args.push('compress');
        }
        this.logger(`Creating ${finalOutput}...`, silent);
        await this.execute('pdftk', args, dryRun);
        this.logger('Done.', silent);
    }
}