tests/md5sum.py
author Manuel Jacob <me@manueljacob.de>
Mon, 29 Jun 2020 15:03:36 +0200
branchstable
changeset 45022 e3b19004087a
parent 43076 2372284d9457
child 45830 c102b704edb5
permissions -rwxr-xr-x
convert: correctly convert paths to UTF-8 for Subversion The previous code using encoding.tolocal() only worked by chance in these situations: * The string is ASCII: The fast path was triggered and the string was returned unmodified. * The local encoding is UTF-8: The source and target encoding is the same. * The string is not valid UTF-8 and the native encoding is ISO-8859-1: If the string doesn’t decode using UTF-8, ISO-8859-1 is tried as a fallback. During `hg convert`, the local encoding is always UTF-8. The irony is that in this case, encoding.tolocal() behaves like what someone would expect the reverse function, encoding.fromlocal(), to do. When the locale encoding is ISO-8859-15, trying to convert a SVN repo `/tmp/a€` failed before like this: file:///tmp/a%C2%A4 does not look like a Subversion repository to libsvn version 1.14.0 The correct URL is `file:///tmp/a%E2%82%AC`. Unlike previously (with the ISO-8859-1 fallback), decoding the path using the locale encoding can fail. In this case, we have to bail out, as Subversion won’t be able to do anything useful with the path.
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#!/usr/bin/env python
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#
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# Based on python's Tools/scripts/md5sum.py
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#
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# This software may be used and distributed according to the terms
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# of the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2, which is
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# GPL-compatible.
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from __future__ import absolute_import
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import hashlib
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import os
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import sys
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try:
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    import msvcrt
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    msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
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    msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
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except ImportError:
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    pass
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for filename in sys.argv[1:]:
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    try:
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        fp = open(filename, 'rb')
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    except IOError as msg:
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        sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
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        sys.exit(1)
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    m = hashlib.md5()
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    try:
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        for data in iter(lambda: fp.read(8192), b''):
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            m.update(data)
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    except IOError as msg:
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        sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))
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        sys.exit(1)
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    sys.stdout.write('%s  %s\n' % (m.hexdigest(), filename))
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sys.exit(0)