Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Revision 3ecfea71ffec6cb51c5d57f8d750dbac78092659 authored by Christian Heimes on 09 February 2008, 20:51:34 UTC, committed by Christian Heimes on 09 February 2008, 20:51:34 UTC
svn+ssh://pythondev@svn.python.org/python/trunk ........ r60679 | raymond.hettinger | 2008-02-09 02:18:42 +0100 (Sat, 09 Feb 2008) | 1 line Make ABC containers inherit as documented. ........ r60684 | raymond.hettinger | 2008-02-09 04:34:52 +0100 (Sat, 09 Feb 2008) | 1 line Merge with r60683. ........ r60687 | raymond.hettinger | 2008-02-09 05:37:49 +0100 (Sat, 09 Feb 2008) | 1 line Add -3 warnings that set.copy(), dict.copy(), and defaultdict.copy() will go away in Py3.x ........ r60689 | raymond.hettinger | 2008-02-09 11:04:19 +0100 (Sat, 09 Feb 2008) | 1 line Metaclass declaration is inherited ........ r60691 | raymond.hettinger | 2008-02-09 11:06:20 +0100 (Sat, 09 Feb 2008) | 1 line Temporarily disable this test. It's been broken for a week. ........ r60695 | nick.coghlan | 2008-02-09 16:28:09 +0100 (Sat, 09 Feb 2008) | 1 line Issue 2021: Allow NamedTemporaryFile and SpooledTemporaryFile to be used as context managers. (The NamedTemporaryFile fix should be considered for backporting to 2.5) ........
1 parent bfd0612
Tip revision: 3ecfea71ffec6cb51c5d57f8d750dbac78092659 authored by Christian Heimes on 09 February 2008, 20:51:34 UTC
Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678-60695 via svnmerge from
Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678-60695 via svnmerge from
Tip revision: 3ecfea7
linecache.py
"""Cache lines from files.
This is intended to read lines from modules imported -- hence if a filename
is not found, it will look down the module search path for a file by
that name.
"""
import sys
import os
import re
__all__ = ["getline", "clearcache", "checkcache"]
def getline(filename, lineno, module_globals=None):
lines = getlines(filename, module_globals)
if 1 <= lineno <= len(lines):
return lines[lineno-1]
else:
return ''
# The cache
cache = {} # The cache
def clearcache():
"""Clear the cache entirely."""
global cache
cache = {}
def getlines(filename, module_globals=None):
"""Get the lines for a file from the cache.
Update the cache if it doesn't contain an entry for this file already."""
if filename in cache:
return cache[filename][2]
else:
return updatecache(filename, module_globals)
def checkcache(filename=None):
"""Discard cache entries that are out of date.
(This is not checked upon each call!)"""
if filename is None:
filenames = list(cache.keys())
else:
if filename in cache:
filenames = [filename]
else:
return
for filename in filenames:
size, mtime, lines, fullname = cache[filename]
if mtime is None:
continue # no-op for files loaded via a __loader__
try:
stat = os.stat(fullname)
except os.error:
del cache[filename]
continue
if size != stat.st_size or mtime != stat.st_mtime:
del cache[filename]
def updatecache(filename, module_globals=None):
"""Update a cache entry and return its list of lines.
If something's wrong, print a message, discard the cache entry,
and return an empty list."""
if filename in cache:
del cache[filename]
if not filename or filename[0] + filename[-1] == '<>':
return []
fullname = filename
try:
stat = os.stat(fullname)
except os.error as msg:
basename = os.path.split(filename)[1]
# Try for a __loader__, if available
if module_globals and '__loader__' in module_globals:
name = module_globals.get('__name__')
loader = module_globals['__loader__']
get_source = getattr(loader, 'get_source', None)
if name and get_source:
if basename.startswith(name.split('.')[-1]+'.'):
try:
data = get_source(name)
except (ImportError, IOError):
pass
else:
if data is None:
# No luck, the PEP302 loader cannot find the source
# for this module.
return []
cache[filename] = (
len(data), None,
[line+'\n' for line in data.splitlines()], fullname
)
return cache[filename][2]
# Try looking through the module search path.
for dirname in sys.path:
# When using imputil, sys.path may contain things other than
# strings; ignore them when it happens.
try:
fullname = os.path.join(dirname, basename)
except (TypeError, AttributeError):
# Not sufficiently string-like to do anything useful with.
pass
else:
try:
stat = os.stat(fullname)
break
except os.error:
pass
else:
# No luck
## print '*** Cannot stat', filename, ':', msg
return []
## print("Refreshing cache for %s..." % fullname)
try:
fp = open(fullname, 'rU')
lines = fp.readlines()
fp.close()
except Exception as msg:
## print '*** Cannot open', fullname, ':', msg
return []
coding = "utf-8"
for line in lines[:2]:
m = re.search(r"coding[:=]\s*([-\w.]+)", line)
if m:
coding = m.group(1)
break
try:
lines = [line if isinstance(line, str) else str(line, coding)
for line in lines]
except:
pass # Hope for the best
size, mtime = stat.st_size, stat.st_mtime
cache[filename] = size, mtime, lines, fullname
return lines
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