[Jython-checkins] jython: Removed Lib/filecmp.py -- deviation from CPython no longer necessary due to
alex.gronholm
jython-checkins at python.org
Thu Mar 15 00:05:14 CET 2012
http://hg.python.org/jython/rev/b2fa1d9c5cc6
changeset: 6380:b2fa1d9c5cc6
user: Alex Grönholm <alex.gronholm at nextday.fi>
date: Wed Mar 14 15:45:05 2012 -0700
summary:
Removed Lib/filecmp.py -- deviation from CPython no longer necessary due to added with statements
files:
Lib/filecmp.py | 300 -------------------------------------
1 files changed, 0 insertions(+), 300 deletions(-)
diff --git a/Lib/filecmp.py b/Lib/filecmp.py
deleted file mode 100644
--- a/Lib/filecmp.py
+++ /dev/null
@@ -1,300 +0,0 @@
-"""Utilities for comparing files and directories.
-
-Classes:
- dircmp
-
-Functions:
- cmp(f1, f2, shallow=1) -> int
- cmpfiles(a, b, common) -> ([], [], [])
-
-"""
-
-import os
-import stat
-from itertools import ifilter, ifilterfalse, imap, izip
-
-__all__ = ["cmp","dircmp","cmpfiles"]
-
-_cache = {}
-BUFSIZE=8*1024
-
-def cmp(f1, f2, shallow=1):
- """Compare two files.
-
- Arguments:
-
- f1 -- First file name
-
- f2 -- Second file name
-
- shallow -- Just check stat signature (do not read the files).
- defaults to 1.
-
- Return value:
-
- True if the files are the same, False otherwise.
-
- This function uses a cache for past comparisons and the results,
- with a cache invalidation mechanism relying on stale signatures.
-
- """
-
- s1 = _sig(os.stat(f1))
- s2 = _sig(os.stat(f2))
- if s1[0] != stat.S_IFREG or s2[0] != stat.S_IFREG:
- return False
- if shallow and s1 == s2:
- return True
- if s1[1] != s2[1]:
- return False
-
- result = _cache.get((f1, f2))
- if result and (s1, s2) == result[:2]:
- return result[2]
- outcome = _do_cmp(f1, f2)
- _cache[f1, f2] = s1, s2, outcome
- return outcome
-
-def _sig(st):
- return (stat.S_IFMT(st.st_mode),
- st.st_size,
- st.st_mtime)
-
-def _do_cmp(f1, f2):
- bufsize = BUFSIZE
- fp1 = open(f1, 'rb')
- fp2 = open(f2, 'rb')
- try:
- while True:
- b1 = fp1.read(bufsize)
- b2 = fp2.read(bufsize)
- if b1 != b2:
- return False
- if not b1:
- return True
- finally:
- fp1.close()
- fp2.close()
-
-# Directory comparison class.
-#
-class dircmp:
- """A class that manages the comparison of 2 directories.
-
- dircmp(a,b,ignore=None,hide=None)
- A and B are directories.
- IGNORE is a list of names to ignore,
- defaults to ['RCS', 'CVS', 'tags'].
- HIDE is a list of names to hide,
- defaults to [os.curdir, os.pardir].
-
- High level usage:
- x = dircmp(dir1, dir2)
- x.report() -> prints a report on the differences between dir1 and dir2
- or
- x.report_partial_closure() -> prints report on differences between dir1
- and dir2, and reports on common immediate subdirectories.
- x.report_full_closure() -> like report_partial_closure,
- but fully recursive.
-
- Attributes:
- left_list, right_list: The files in dir1 and dir2,
- filtered by hide and ignore.
- common: a list of names in both dir1 and dir2.
- left_only, right_only: names only in dir1, dir2.
- common_dirs: subdirectories in both dir1 and dir2.
- common_files: files in both dir1 and dir2.
- common_funny: names in both dir1 and dir2 where the type differs between
- dir1 and dir2, or the name is not stat-able.
- same_files: list of identical files.
- diff_files: list of filenames which differ.
- funny_files: list of files which could not be compared.
- subdirs: a dictionary of dircmp objects, keyed by names in common_dirs.
- """
-
- def __init__(self, a, b, ignore=None, hide=None): # Initialize
- self.left = a
- self.right = b
- if hide is None:
- self.hide = [os.curdir, os.pardir] # Names never to be shown
- else:
- self.hide = hide
- if ignore is None:
- self.ignore = ['RCS', 'CVS', 'tags'] # Names ignored in comparison
- else:
- self.ignore = ignore
-
- def phase0(self): # Compare everything except common subdirectories
- self.left_list = _filter(os.listdir(self.left),
- self.hide+self.ignore)
- self.right_list = _filter(os.listdir(self.right),
- self.hide+self.ignore)
- self.left_list.sort()
- self.right_list.sort()
-
- def phase1(self): # Compute common names
- a = dict(izip(imap(os.path.normcase, self.left_list), self.left_list))
- b = dict(izip(imap(os.path.normcase, self.right_list), self.right_list))
- self.common = map(a.__getitem__, ifilter(b.__contains__, a))
- self.left_only = map(a.__getitem__, ifilterfalse(b.__contains__, a))
- self.right_only = map(b.__getitem__, ifilterfalse(a.__contains__, b))
-
- def phase2(self): # Distinguish files, directories, funnies
- self.common_dirs = []
- self.common_files = []
- self.common_funny = []
-
- for x in self.common:
- a_path = os.path.join(self.left, x)
- b_path = os.path.join(self.right, x)
-
- ok = 1
- try:
- a_stat = os.stat(a_path)
- except os.error, why:
- # print 'Can\'t stat', a_path, ':', why[1]
- ok = 0
- try:
- b_stat = os.stat(b_path)
- except os.error, why:
- # print 'Can\'t stat', b_path, ':', why[1]
- ok = 0
-
- if ok:
- a_type = stat.S_IFMT(a_stat.st_mode)
- b_type = stat.S_IFMT(b_stat.st_mode)
- if a_type != b_type:
- self.common_funny.append(x)
- elif stat.S_ISDIR(a_type):
- self.common_dirs.append(x)
- elif stat.S_ISREG(a_type):
- self.common_files.append(x)
- else:
- self.common_funny.append(x)
- else:
- self.common_funny.append(x)
-
- def phase3(self): # Find out differences between common files
- xx = cmpfiles(self.left, self.right, self.common_files)
- self.same_files, self.diff_files, self.funny_files = xx
-
- def phase4(self): # Find out differences between common subdirectories
- # A new dircmp object is created for each common subdirectory,
- # these are stored in a dictionary indexed by filename.
- # The hide and ignore properties are inherited from the parent
- self.subdirs = {}
- for x in self.common_dirs:
- a_x = os.path.join(self.left, x)
- b_x = os.path.join(self.right, x)
- self.subdirs[x] = dircmp(a_x, b_x, self.ignore, self.hide)
-
- def phase4_closure(self): # Recursively call phase4() on subdirectories
- self.phase4()
- for sd in self.subdirs.itervalues():
- sd.phase4_closure()
-
- def report(self): # Print a report on the differences between a and b
- # Output format is purposely lousy
- print 'diff', self.left, self.right
- if self.left_only:
- self.left_only.sort()
- print 'Only in', self.left, ':', self.left_only
- if self.right_only:
- self.right_only.sort()
- print 'Only in', self.right, ':', self.right_only
- if self.same_files:
- self.same_files.sort()
- print 'Identical files :', self.same_files
- if self.diff_files:
- self.diff_files.sort()
- print 'Differing files :', self.diff_files
- if self.funny_files:
- self.funny_files.sort()
- print 'Trouble with common files :', self.funny_files
- if self.common_dirs:
- self.common_dirs.sort()
- print 'Common subdirectories :', self.common_dirs
- if self.common_funny:
- self.common_funny.sort()
- print 'Common funny cases :', self.common_funny
-
- def report_partial_closure(self): # Print reports on self and on subdirs
- self.report()
- for sd in self.subdirs.itervalues():
- print
- sd.report()
-
- def report_full_closure(self): # Report on self and subdirs recursively
- self.report()
- for sd in self.subdirs.itervalues():
- print
- sd.report_full_closure()
-
- methodmap = dict(subdirs=phase4,
- same_files=phase3, diff_files=phase3, funny_files=phase3,
- common_dirs = phase2, common_files=phase2, common_funny=phase2,
- common=phase1, left_only=phase1, right_only=phase1,
- left_list=phase0, right_list=phase0)
-
- def __getattr__(self, attr):
- if attr not in self.methodmap:
- raise AttributeError, attr
- self.methodmap[attr](self)
- return getattr(self, attr)
-
-def cmpfiles(a, b, common, shallow=1):
- """Compare common files in two directories.
-
- a, b -- directory names
- common -- list of file names found in both directories
- shallow -- if true, do comparison based solely on stat() information
-
- Returns a tuple of three lists:
- files that compare equal
- files that are different
- filenames that aren't regular files.
-
- """
- res = ([], [], [])
- for x in common:
- ax = os.path.join(a, x)
- bx = os.path.join(b, x)
- res[_cmp(ax, bx, shallow)].append(x)
- return res
-
-
-# Compare two files.
-# Return:
-# 0 for equal
-# 1 for different
-# 2 for funny cases (can't stat, etc.)
-#
-def _cmp(a, b, sh, abs=abs, cmp=cmp):
- try:
- return not abs(cmp(a, b, sh))
- except os.error:
- return 2
-
-
-# Return a copy with items that occur in skip removed.
-#
-def _filter(flist, skip):
- return list(ifilterfalse(skip.__contains__, flist))
-
-
-# Demonstration and testing.
-#
-def demo():
- import sys
- import getopt
- options, args = getopt.getopt(sys.argv[1:], 'r')
- if len(args) != 2:
- raise getopt.GetoptError('need exactly two args', None)
- dd = dircmp(args[0], args[1])
- if ('-r', '') in options:
- dd.report_full_closure()
- else:
- dd.report()
-
-if __name__ == '__main__':
- demo()
--
Repository URL: http://hg.python.org/jython
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