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56 lines
1.3 KiB
56 lines
1.3 KiB
4 years ago
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#! /usr/bin/env python3
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"Replace tabs with spaces in argument files. Print names of changed files."
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import os
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import sys
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import getopt
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import tokenize
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def main():
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tabsize = 8
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try:
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opts, args = getopt.getopt(sys.argv[1:], "t:")
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if not args:
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raise getopt.error("At least one file argument required")
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except getopt.error as msg:
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print(msg)
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print("usage:", sys.argv[0], "[-t tabwidth] file ...")
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return
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for optname, optvalue in opts:
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if optname == '-t':
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tabsize = int(optvalue)
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for filename in args:
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process(filename, tabsize)
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def process(filename, tabsize, verbose=True):
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try:
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with tokenize.open(filename) as f:
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text = f.read()
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encoding = f.encoding
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except IOError as msg:
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print("%r: I/O error: %s" % (filename, msg))
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return
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newtext = text.expandtabs(tabsize)
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if newtext == text:
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return
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backup = filename + "~"
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try:
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os.unlink(backup)
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except OSError:
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pass
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try:
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os.rename(filename, backup)
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except OSError:
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pass
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with open(filename, "w", encoding=encoding) as f:
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f.write(newtext)
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if verbose:
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print(filename)
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if __name__ == '__main__':
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main()
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