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| author | Martin v. Löwis <martin@v.loewis.de> | 2004-03-25 14:58:19 (GMT) |
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| committer | Martin v. Löwis <martin@v.loewis.de> | 2004-03-25 14:58:19 (GMT) |
| commit | 1c0f1f97fb9021a2084298e04aa920d5f478f0c6 (patch) | |
| tree | 675d72d827999aea2e8ee9aef40bada55aaeeb91 /Lib | |
| parent | 85309512ec4f461a3025fab3bd11408950752f5d (diff) | |
| download | cpython-1c0f1f97fb9021a2084298e04aa920d5f478f0c6.zip cpython-1c0f1f97fb9021a2084298e04aa920d5f478f0c6.tar.gz cpython-1c0f1f97fb9021a2084298e04aa920d5f478f0c6.tar.bz2 | |
Defer compilation of regular expressions until first use.
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/distutils/util.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Lib/distutils/util.py b/Lib/distutils/util.py index 8c3c8df..12775d6 100644 --- a/Lib/distutils/util.py +++ b/Lib/distutils/util.py @@ -209,9 +209,12 @@ def grok_environment_error (exc, prefix="error: "): # Needed by 'split_quoted()' -_wordchars_re = re.compile(r'[^\\\'\"%s ]*' % string.whitespace) -_squote_re = re.compile(r"'(?:[^'\\]|\\.)*'") -_dquote_re = re.compile(r'"(?:[^"\\]|\\.)*"') +_wordchars_re = _squote_re = _dquote_re = None +def _init_regex(): + global _wordchars_re, _squote_re, _dquote_re + _wordchars_re = re.compile(r'[^\\\'\"%s ]*' % string.whitespace) + _squote_re = re.compile(r"'(?:[^'\\]|\\.)*'") + _dquote_re = re.compile(r'"(?:[^"\\]|\\.)*"') def split_quoted (s): """Split a string up according to Unix shell-like rules for quotes and @@ -227,6 +230,7 @@ def split_quoted (s): # This is a nice algorithm for splitting up a single string, since it # doesn't require character-by-character examination. It was a little # bit of a brain-bender to get it working right, though... + if _wordchars_re is None: _init_regex() s = string.strip(s) words = [] |