134 lines
3.9 KiB
Python
134 lines
3.9 KiB
Python
'''
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Batch rename files by providing a string to be `eval`ed, using variable `x` as
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the current filename.
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Yes I know this is weird, but for certain tasks it's just too quick and easy to pass up.
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For example:
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Prefix all the files:
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brename.py "'Test_' + x"
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Keep the first word and extension:
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brename.py "(x.split(' ')[0] + '.' + x.split('.')[-1]) if ' ' in x else x"
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'''
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import argparse
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import os
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import random
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import re
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import sys
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import unicodedata
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from voussoirkit import interactive
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from voussoirkit import safeprint
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from voussoirkit import spinal
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from voussoirkit import stringtools
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# These variables are provided so that if you have any difficulty typing
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# literal quotes etc into your command line, you can just use these variable
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# names in your eval string.
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apostrophe = "'"
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dot = '.'
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hyphen = '-'
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quote = '"'
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space = ' '
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underscore = '_'
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# For backwards compatibility, these names which were once locally defined
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# functions are now just references to stringtools.
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excise = stringtools.excise
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title = stringtools.title_capitalize
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def natural_sorter(x):
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'''
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Thank you Mark Byers
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http://stackoverflow.com/a/11150413
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'''
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convert = lambda text: int(text) if text.isdigit() else text.lower()
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alphanum_key = lambda key: [convert(c) for c in re.split(r'([0-9]+)', key)]
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return alphanum_key(x)
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def unicode_normalize(s):
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return unicodedata.normalize('NFC', s)
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def brename(transformation, autoyes=False, do_naturalsort=False, recurse=False):
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if recurse:
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walker = spinal.walk_generator('.', yield_files=True, yield_directories=True)
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olds = [x.absolute_path for x in walker]
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else:
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olds = [os.path.join(os.getcwd(), x) for x in os.listdir('.')]
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if do_naturalsort:
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olds.sort(key=natural_sorter)
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else:
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olds.sort()
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pairs = []
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for (index, old) in enumerate(olds):
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new = old
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directory = os.path.dirname(new)
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basename = os.path.basename(new)
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new = basename
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# These variables are assigned so that you can use them in your
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# transformation string.
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(noext, ext) = os.path.splitext(basename)
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x = new
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extension = ext
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index1 = index + 1
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new = eval(transformation)
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new = os.path.join(directory, new)
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if new == old:
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continue
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pairs.append((old, new))
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if not pairs:
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print('Nothing to replace')
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return
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loop(pairs, dry=True)
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if autoyes or interactive.getpermission('Is this correct?'):
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# Sort in reverse so that renaming a file inside a directory always
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# occurs before renaming the directory itself. If you rename the
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# directory first, then the path to the file is invalid by the time
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# you want to rename it.
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pairs = sorted(pairs, reverse=True)
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loop(pairs, dry=False)
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def longest_length(li):
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longest = 0
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for item in li:
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longest = max(longest, len(item))
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return longest
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def loop(pairs, dry=False):
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for (old, new) in pairs:
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if dry:
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line = f'{old}\n{new}\n'
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safeprint.safeprint(line)
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else:
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os.rename(old, new)
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def brename_argparse(args):
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return brename(
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args.transformation,
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autoyes=args.autoyes,
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do_naturalsort=args.do_naturalsort,
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recurse=args.recurse,
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)
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def main(argv):
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('transformation', help='python command using x as variable name')
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parser.add_argument('-y', '--yes', dest='autoyes', action='store_true', help='accept results without confirming')
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parser.add_argument('--recurse', dest='recurse', action='store_true', help='operate on subdirectories also')
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parser.add_argument('--naturalsort', dest='do_naturalsort', action='store_true')
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parser.set_defaults(func=brename_argparse)
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args = parser.parse_args(argv)
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return args.func(args)
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if __name__ == '__main__':
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raise SystemExit(main(sys.argv[1:]))
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