vimtabdiff/vimtabdiff.py

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#!/usr/bin/python3
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import os
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import argparse
import pathlib
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import itertools
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import tempfile
import subprocess
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def star(f):
""" see https://stackoverflow.com/q/21892989 """
return lambda args: f(*args)
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def parse_args():
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parser = argparse.ArgumentParser(
description="Show diff of files from two directories in vim tabs")
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parser.add_argument("pathA")
parser.add_argument("pathB")
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parser.add_argument("--vim", help="vim command to run", default="vim")
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return parser.parse_args()
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def get_dir_info(dirname):
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if not dirname:
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return [], []
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dirs, files = [], []
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dirp = pathlib.Path(dirname)
for p in dirp.iterdir():
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if p.is_dir():
dirs.append(p)
else:
files.append(p)
return dirs, files
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def get_pairs(aItems, bItems):
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aItems = [(item, 'A') for item in aItems]
bItems = [(item, 'B') for item in bItems]
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abItems = aItems + bItems
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abItems.sort(key=star(lambda item, tag: (item.name, tag)))
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for _, items in itertools.groupby(abItems,
key=star(lambda item, _: item.name)):
items = list(items)
# NOTE: python 3.10's match expression can make this better
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if len(items) == 2:
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(aItem, _), (bItem, _) = items
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yield aItem, bItem
else:
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(item, tag), = items
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if tag == 'A':
yield item, None
else:
yield None, item
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def get_file_pairs(a, b):
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aDirs, aFiles = get_dir_info(a)
bDirs, bFiles = get_dir_info(b)
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yield from get_pairs(aFiles, bFiles)
for aDir, bDir in get_pairs(aDirs, bDirs):
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yield from get_file_pairs(aDir, bDir)
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def main():
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args = parse_args()
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vimCmdFile = tempfile.NamedTemporaryFile(mode='w', delete=False)
with vimCmdFile:
for a, b in get_file_pairs(args.pathA, args.pathB):
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aPath = a.resolve() if a else os.devnull
bPath = b.resolve() if b else os.devnull
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print(
f"tabedit {aPath} | diffthis | vsp {bPath} | diffthis | diffupdate",
file=vimCmdFile)
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cmds = f"""
tabfirst | tabclose
call delete("{vimCmdFile.name}")
"""
print(cmds, file=vimCmdFile)
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subprocess.run(args.vim.split() + ["-S", vimCmdFile.name])
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if __name__ == '__main__':
main()