PDF分割とマージ

pdfmergetwoside.py

'''
PDFをマージして見開きにする
'''
import subprocess
import tempfile
from pathlib import Path


def main(args):
    with tempfile.TemporaryDirectory() as tmpdir:
        tmpdir_path = Path(tmpdir)
        unitefile_path = str(tmpdir_path / 'united.pdf')
        # unite pdfs
        cmd = ['pdfunite'] + args.pdffiles + [unitefile_path]
        subprocess.run(cmd, check=True)
        # convert 2-in-1
        cmd = ['pdfjam', '--nup', '2x1', '--landscape', '--outfile', args.outfile, unitefile_path]
        subprocess.run(cmd, check=True)


def parse_args():
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('-o', dest='outfile', nargs='?', default='twoside.pdf')
    parser.add_argument('pdffiles', nargs='+')
    return parser.parse_args()


if __name__ == '__main__':
    args = parse_args()
    main(args)

pdfsplit.py

'''
PDFを分割する
'''
import sys
import tempfile
import subprocess
from pathlib import Path


def main(args):
    # parse arguments
    ranges = []
    for r in args.ranges:
        start_page, end_page = r.split('-')
        try:
            start_page = int(start_page)
            end_page = int(end_page)
        except ValueError:
            print('Invalid page range given:', r, file=sys.stderr)
            sys.exit(1)
        else:
            ranges.append((start_page, end_page))

    # Prepare temp dir
    with tempfile.TemporaryDirectory() as tmpdir:
        print(tmpdir)
        tmpdir_path = Path(tmpdir)

        # Split PDF
        cmd = ['pdfseparate', args.pdf, str(tmpdir_path / 'separated-%d.pdf')]
        subprocess.run(cmd, check=True)

        # make pdf for each range
        for s, e in ranges:
            print(s, e)
            names = [str(tmpdir_path / f'separated-{i}.pdf') for i in range(s, e+1)]
            cmd = ['pdfunite'] + names + [f'paper_{s}-{e}.pdf']
            subprocess.run(cmd, check=True)


def parse_args():
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('pdf')
    parser.add_argument('ranges', nargs='+')
    return parser.parse_args()


if __name__ == '__main__':
    args = parse_args()
    main(args)