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43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
import os
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import sys
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import glob
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"""
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Insert a file into files followed by a sequential number. Existing files are shifted by one.
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example:
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existing files: 01_foo.md, 02_bar.md, 03_baz.md
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1st arg(inserting file): qux.md
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2nd arg(file no): 2
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result: 01_foo.md, 02_qux.md, 03_bar.md, 04_baz.md
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"""
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if __name__ == '__main__':
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file = sys.argv[1]
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file_no = sys.argv[2]
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if not file_no.isdigit():
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raise ValueError('File number must be a number')
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else:
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file_no = int(file_no)
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if len(glob.glob("_[0-9][0-9]_*")) > 0:
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raise Exception("Escaped file already exists, rename it")
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# escaping
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for esc in sorted(glob.glob("[0-9][0-9]_*")):
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if int(esc.split("_")[0]) < file_no: continue
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else: os.rename(esc, "_" + esc)
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target = f"{file_no:02d}_" + file
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if os.path.exists(target):
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raise OSError(f"File {target} already exists")
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os.rename(file, target)
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while True:
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nxt = glob.glob(f"_{file_no:02d}_*")
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if len(nxt) == 0:
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exit(0)
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elif len(nxt) >= 2:
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raise ValueError("More than one file with the same number")
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else:
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target = nxt[0]
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replace_to = "_".join([f"{file_no+1:02d}", *target.split("_")[2:]])
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os.rename(target, replace_to)
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file_no += 1
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