Watermark a bunch of files

add_watermarks.py

#!/usr/bin/env python
# encoding: utf-8
"""
add_watermarks.py

Copyright (c) 2017 Rob Mason

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Description: Watermark all files from a root tree down with watermark image and creating new images with a name
                appended

Example: ./add_watermarks.py --root . --watermark copyright.jpg --exclude marketplace

Runs in current directory, finds all files of type extension and watermarks them with the watermark image creating
    a new file with the name extension
    i.e. foo.jpg -> foo-watermark.jpg

    It will not re-watermark an image if you keep the same watermark extension (so you can run multiple times on the
    same directory without any bad things happening.

Dependencies: ImageMagic (http://www.imagemagick.org/script/index.php)
"""

import os
import argparse

def main():
    parser = argparse.ArgumentParser(description='Add watermarks to images in path')
    parser.add_argument('--root', help='Root path for images', required=True, type=str)
    parser.add_argument('--watermark', help='Path to watermark image', required=True, type=str)
    parser.add_argument('--name', help='Name addition for watermark', default="-watermark", type=str)
    parser.add_argument('--extension', help='Image extensions to look for', default=".jpg", type=str)
    parser.add_argument('--exclude', help='Path content to exclude', type=str)

    args = parser.parse_args()

    files_processed = 0
    files_watermarked = 0
    for dirName, subdirList, fileList in os.walk(args.root):
        if args.exclude is not None and args.exclude in dirName:
            continue
        #print('Walking directory: %s' % dirName)
        for fname in fileList:
            files_processed += 1
            #print('  Processing %s' % os.path.join(dirName, fname))
            if args.extension in fname and args.watermark not in fname and args.name not in fname:
                ext = '.'.join(os.path.basename(fname).split('.')[1:])
                orig = os.path.join(dirName, fname)
                new_name = os.path.join(dirName, '%s.%s' % (os.path.basename(fname).split('.')[0] + args.name, ext))
                if not os.path.exists(new_name):
                    files_watermarked += 1
                    print('    Convert %s to %s' % (orig, new_name))
                    os.system('composite -dissolve 30%% -gravity SouthEast %s "%s" "%s"' % (args.watermark, orig, new_name))

    print("Files Processed: %s" % "{:,}".format(files_processed))
    print("Files Watermarked: %s" % "{:,}".format(files_watermarked))


if __name__ == '__main__':
    main()