Guess... :-)

This commit is contained in:
Guido van Rossum 1997-12-09 16:56:41 +00:00
parent 3d20986d96
commit b978d18fec
6 changed files with 474 additions and 167 deletions

255
Lib/dos-8x3/configpa.py Normal file
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@ -0,0 +1,255 @@
"""Configuration file parser.
A setup file consists of sections, lead by a "[section]" header,
and followed by "name: value" entries, with continuations and such in
the style of rfc822.
The option values can contain format strings which refer to other
values in the same section, or values in a special [DEFAULT] section.
For example:
something: %(dir)s/whatever
would resolve the "%(dir)s" to the value of dir. All reference
expansions are done late, on demand.
Intrinsic defaults can be specified by passing them into the
ConfigParser constructor as a dictionary.
class:
ConfigParser -- responsible for for parsing a list of
configuration files, and managing the parsed database.
methods:
__init__(defaults=None) -- create the parser and specify a
dictionary of intrinsic defaults. The
keys must be strings, the values must
be appropriate for %()s string
interpolation. Note that `name' is
always an intrinsic default; it's value
is the section's name.
sections() -- return all the configuration section names, sans DEFAULT
options(section) -- return list of configuration options for the named
section
read(*filenames) -- read and parse the list of named configuration files
get(section, option, raw=0) -- return a string value for the named
option. All % interpolations are
expanded in the return values, based on
the defaults passed into the constructor
and the DEFAULT section.
getint(section, options) -- like get(), but convert value to an integer
getfloat(section, options) -- like get(), but convert value to a float
getboolean(section, options) -- like get(), but convert value to
a boolean (currently defined as 0
or 1, only)
"""
import sys
import string
import regex
from types import ListType
SECTHEAD_RE = "^\[\([-A-Za-z0-9]*\)\][" + string.whitespace + "]*$"
secthead_cre = regex.compile(SECTHEAD_RE)
OPTION_RE = "^\([-A-Za-z0-9.]+\)\(:\|[" + string.whitespace + "]*=\)\(.*\)$"
option_cre = regex.compile(OPTION_RE)
DEFAULTSECT = "DEFAULT"
# exception classes
class Error:
def __init__(self, msg=''):
self.__msg = msg
def __repr__(self):
return self.__msg
class NoSectionError(Error):
def __init__(self, section):
Error.__init__(self, 'No section: %s' % section)
self.section = section
class DuplicateSectionError(Error):
def __init__(self, section):
Error.__init__(self, "Section %s already exists" % section)
self.section = section
class NoOptionError(Error):
def __init__(self, option, section):
Error.__init__(self, "No option `%s' in section: %s" %
(option, section))
self.option = option
self.section = section
class InterpolationError(Error):
def __init__(self, reference, option, section):
Error.__init__(self,
"Bad value substitution: sect `%s', opt `%s', ref `%s'"
% (section, option, reference))
self.reference = reference
self.option = option
self.section = section
class ConfigParser:
def __init__(self, defaults=None):
self.__sections = {}
if defaults is None:
self.__defaults = {}
else:
self.__defaults = defaults
def defaults(self):
return self.__defaults
def sections(self):
"""Return a list of section names, excluding [DEFAULT]"""
# self.__sections will never have [DEFAULT] in it
return self.__sections.keys()
def add_section(self, section):
"""Create a new section in the configuration.
Raise DuplicateSectionError if a section by the specified name
already exists.
"""
if self.__sections.has_key(section):
raise DuplicateSectionError(section)
self.__sections[section] = {}
def has_section(self, section):
"""Indicate whether the named section is present in the configuration.
The DEFAULT section is not acknowledged.
"""
return self.__sections.has_key(section)
def options(self, section):
try:
opts = self.__sections[section].copy()
except KeyError:
raise NoSectionError(section)
opts.update(self.__defaults)
return opts.keys()
def read(self, filenames):
"""Read and parse a list of filenames."""
if type(filenames) is type(''):
filenames = [filenames]
for file in filenames:
try:
fp = open(file, 'r')
self.__read(fp)
except IOError:
pass
def get(self, section, option, raw=0):
"""Get an option value for a given section.
All % interpolations are expanded in the return values, based
on the defaults passed into the constructor.
The section DEFAULT is special.
"""
try:
d = self.__sections[section].copy()
except KeyError:
if section == DEFAULTSECT:
d = {}
else:
raise NoSectionError(section)
d.update(self.__defaults)
option = string.lower(option)
try:
rawval = d[option]
except KeyError:
raise NoOptionError(option, section)
# do the string interpolation
if raw:
return rawval
try:
return rawval % d
except KeyError, key:
raise InterpolationError(key, option, section)
def __get(self, section, conv, option):
return conv(self.get(section, option))
def getint(self, section, option):
return self.__get(section, string.atoi, option)
def getfloat(self, section, option):
return self.__get(section, string.atof, option)
def getboolean(self, section, option):
v = self.get(section, option)
val = string.atoi(v)
if val not in (0, 1):
raise ValueError, 'Not a boolean: %s' % v
return val
def __read(self, fp):
"""Parse a sectioned setup file.
The sections in setup file contains a title line at the top,
indicated by a name in square brackets (`[]'), plus key/value
options lines, indicated by `name: value' format lines.
Continuation are represented by an embedded newline then
leading whitespace. Blank lines, lines beginning with a '#',
and just about everything else is ignored.
"""
cursect = None # None, or a dictionary
optname = None
lineno = 0
while 1:
line = fp.readline()
if not line:
break
lineno = lineno + 1
# comment or blank line?
if string.strip(line) == '' or line[0] in '#;':
continue
if string.lower(string.split(line)[0]) == 'rem' \
and line[0] == "r": # no leading whitespace
continue
# continuation line?
if line[0] in ' \t' and cursect <> None and optname:
value = string.strip(line)
if value:
cursect = cursect[optname] + '\n ' + value
# a section header?
elif secthead_cre.match(line) >= 0:
sectname = secthead_cre.group(1)
if self.__sections.has_key(sectname):
cursect = self.__sections[sectname]
elif sectname == DEFAULTSECT:
cursect = self.__defaults
else:
cursect = {'name': sectname}
self.__sections[sectname] = cursect
# So sections can't start with a continuation line.
optname = None
# an option line?
elif option_cre.match(line) >= 0:
optname, optval = option_cre.group(1, 3)
optname = string.lower(optname)
optval = string.strip(optval)
# allow empty values
if optval == '""':
optval = ''
cursect[optname] = optval
# an error
else:
print 'Error in %s at %d: %s', (fp.name, lineno, `line`)

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@ -177,7 +177,7 @@ class _posixfile_:
# Hack by davem@magnet.com to get locking to go on freebsd;
# additions for AIX by Vladimir.Marangozov@imag.fr
import sys, os
if sys.platform == 'freebsd2':
if sys.platform in ('netbsd1', 'freebsd2', 'freebsd3'):
flock = struct.pack('lxxxxlxxxxlhh', \
l_start, l_len, os.getpid(), l_type, l_whence)
elif sys.platform in ['aix3', 'aix4']:
@ -190,7 +190,7 @@ class _posixfile_:
flock = fcntl.fcntl(self._file_.fileno(), cmd, flock)
if '?' in how:
if sys.platform == 'freebsd2':
if sys.platform in ('netbsd1', 'freebsd2', 'freebsd3'):
l_start, l_len, l_pid, l_type, l_whence = \
struct.unpack('lxxxxlxxxxlhh', flock)
elif sys.platform in ['aix3', 'aix4']:

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@ -5,6 +5,10 @@
# on other systems (e.g. Mac, Windows), os.path provides the same
# operations in a manner specific to that platform, and is an alias
# to another module (e.g. macpath, ntpath).
"""Common pathname manipulations, Posix version.
Instead of importing this module
directly, import os and refer to this module as os.path.
"""
import os
import stat
@ -16,14 +20,16 @@ import stat
# (another function should be defined to do that).
def normcase(s):
return s
"""Normalize case of pathname. Has no effect under Posix"""
return s
# Return wheter a path is absolute.
# Trivial in Posix, harder on the Mac or MS-DOS.
def isabs(s):
return s[:1] == '/'
"""Test whether a path is absolute"""
return s[:1] == '/'
# Join pathnames.
@ -31,15 +37,16 @@ def isabs(s):
# Insert a '/' unless the first part is empty or already ends in '/'.
def join(a, *p):
path = a
for b in p:
if b[:1] == '/':
path = b
elif path == '' or path[-1:] == '/':
path = path + b
else:
path = path + '/' + b
return path
"""Join two or more pathname components, inserting '/' as needed"""
path = a
for b in p:
if b[:1] == '/':
path = b
elif path == '' or path[-1:] == '/':
path = path + b
else:
path = path + '/' + b
return path
# Split a path in head (everything up to the last '/') and tail (the
@ -48,13 +55,15 @@ def join(a, *p):
# Trailing '/'es are stripped from head unless it is the root.
def split(p):
import string
i = string.rfind(p, '/') + 1
head, tail = p[:i], p[i:]
if head and head <> '/'*len(head):
while head[-1] == '/':
head = head[:-1]
return head, tail
"""Split a pathname. Returns tuple "(head, tail)" where "tail" is
everything after the final slash. Either part may be empty"""
import string
i = string.rfind(p, '/') + 1
head, tail = p[:i], p[i:]
if head and head <> '/'*len(head):
while head[-1] == '/':
head = head[:-1]
return head, tail
# Split a path in root and extension.
@ -63,75 +72,84 @@ def split(p):
# It is always true that root + ext == p.
def splitext(p):
root, ext = '', ''
for c in p:
if c == '/':
root, ext = root + ext + c, ''
elif c == '.':
if ext:
root, ext = root + ext, c
else:
ext = c
elif ext:
ext = ext + c
else:
root = root + c
return root, ext
"""Split the extension from a pathname. Extension is everything from the
last dot to the end. Returns "(root, ext)", either part may be empty"""
root, ext = '', ''
for c in p:
if c == '/':
root, ext = root + ext + c, ''
elif c == '.':
if ext:
root, ext = root + ext, c
else:
ext = c
elif ext:
ext = ext + c
else:
root = root + c
return root, ext
# Split a pathname into a drive specification and the rest of the
# path. Useful on DOS/Windows/NT; on Unix, the drive is always empty.
def splitdrive(p):
return '', p
"""Split a pathname into drive and path. On Posix, drive is always
empty"""
return '', p
# Return the tail (basename) part of a path.
def basename(p):
return split(p)[1]
"""Returns the final component of a pathname"""
return split(p)[1]
# Return the head (dirname) part of a path.
def dirname(p):
return split(p)[0]
"""Returns the directory component of a pathname"""
return split(p)[0]
# Return the longest prefix of all list elements.
def commonprefix(m):
if not m: return ''
prefix = m[0]
for item in m:
for i in range(len(prefix)):
if prefix[:i+1] <> item[:i+1]:
prefix = prefix[:i]
if i == 0: return ''
break
return prefix
"Given a list of pathnames, returns the longest common leading component"
if not m: return ''
prefix = m[0]
for item in m:
for i in range(len(prefix)):
if prefix[:i+1] <> item[:i+1]:
prefix = prefix[:i]
if i == 0: return ''
break
return prefix
# Is a path a symbolic link?
# This will always return false on systems where os.lstat doesn't exist.
def islink(path):
try:
st = os.lstat(path)
except (os.error, AttributeError):
return 0
return stat.S_ISLNK(st[stat.ST_MODE])
"""Test whether a path is a symbolic link"""
try:
st = os.lstat(path)
except (os.error, AttributeError):
return 0
return stat.S_ISLNK(st[stat.ST_MODE])
# Does a path exist?
# This is false for dangling symbolic links.
def exists(path):
try:
st = os.stat(path)
except os.error:
return 0
return 1
"""Test whether a path exists. Returns false for broken symbolic links"""
try:
st = os.stat(path)
except os.error:
return 0
return 1
# Is a path a directory?
@ -139,11 +157,12 @@ def exists(path):
# for the same path.
def isdir(path):
try:
st = os.stat(path)
except os.error:
return 0
return stat.S_ISDIR(st[stat.ST_MODE])
"""Test whether a path is a directory"""
try:
st = os.stat(path)
except os.error:
return 0
return stat.S_ISDIR(st[stat.ST_MODE])
# Is a path a regular file?
@ -151,78 +170,87 @@ def isdir(path):
# for the same path.
def isfile(path):
try:
st = os.stat(path)
except os.error:
return 0
return stat.S_ISREG(st[stat.ST_MODE])
"""Test whether a path is a regular file"""
try:
st = os.stat(path)
except os.error:
return 0
return stat.S_ISREG(st[stat.ST_MODE])
# Are two filenames really pointing to the same file?
def samefile(f1, f2):
s1 = os.stat(f1)
s2 = os.stat(f2)
return samestat(s1, s2)
"""Test whether two pathnames reference the same actual file"""
s1 = os.stat(f1)
s2 = os.stat(f2)
return samestat(s1, s2)
# Are two open files really referencing the same file?
# (Not necessarily the same file descriptor!)
def sameopenfile(fp1, fp2):
s1 = os.fstat(fp1)
s2 = os.fstat(fp2)
return samestat(s1, s2)
"""Test whether two open file objects reference the same file"""
s1 = os.fstat(fp1)
s2 = os.fstat(fp2)
return samestat(s1, s2)
# Are two stat buffers (obtained from stat, fstat or lstat)
# describing the same file?
def samestat(s1, s2):
return s1[stat.ST_INO] == s2[stat.ST_INO] and \
s1[stat.ST_DEV] == s2[stat.ST_DEV]
"""Test whether two stat buffers reference the same file"""
return s1[stat.ST_INO] == s2[stat.ST_INO] and \
s1[stat.ST_DEV] == s2[stat.ST_DEV]
# Is a path a mount point?
# (Does this work for all UNIXes? Is it even guaranteed to work by Posix?)
def ismount(path):
try:
s1 = os.stat(path)
s2 = os.stat(join(path, '..'))
except os.error:
return 0 # It doesn't exist -- so not a mount point :-)
dev1 = s1[stat.ST_DEV]
dev2 = s2[stat.ST_DEV]
if dev1 != dev2:
return 1 # path/.. on a different device as path
ino1 = s1[stat.ST_INO]
ino2 = s2[stat.ST_INO]
if ino1 == ino2:
return 1 # path/.. is the same i-node as path
return 0
"""Test whether a path is a mount point"""
try:
s1 = os.stat(path)
s2 = os.stat(join(path, '..'))
except os.error:
return 0 # It doesn't exist -- so not a mount point :-)
dev1 = s1[stat.ST_DEV]
dev2 = s2[stat.ST_DEV]
if dev1 != dev2:
return 1 # path/.. on a different device as path
ino1 = s1[stat.ST_INO]
ino2 = s2[stat.ST_INO]
if ino1 == ino2:
return 1 # path/.. is the same i-node as path
return 0
# Directory tree walk.
# For each directory under top (including top itself, but excluding
# '.' and '..'), func(arg, dirname, filenames) is called, where
# dirname is the name of the directory and filenames is the list
# files files (and subdirectories etc.) in the directory.
# of files (and subdirectories etc.) in the directory.
# The func may modify the filenames list, to implement a filter,
# or to impose a different order of visiting.
def walk(top, func, arg):
try:
names = os.listdir(top)
except os.error:
return
func(arg, top, names)
exceptions = ('.', '..')
for name in names:
if name not in exceptions:
name = join(top, name)
if isdir(name) and not islink(name):
walk(name, func, arg)
"""walk(top,func,args) calls func(arg, d, files) for each directory "d"
in the tree rooted at "top" (including "top" itself). "files" is a list
of all the files and subdirs in directory "d".
"""
try:
names = os.listdir(top)
except os.error:
return
func(arg, top, names)
exceptions = ('.', '..')
for name in names:
if name not in exceptions:
name = join(top, name)
if isdir(name) and not islink(name):
walk(name, func, arg)
# Expand paths beginning with '~' or '~user'.
@ -235,24 +263,26 @@ def walk(top, func, arg):
# variable expansion.)
def expanduser(path):
if path[:1] <> '~':
return path
i, n = 1, len(path)
while i < n and path[i] <> '/':
i = i+1
if i == 1:
if not os.environ.has_key('HOME'):
return path
userhome = os.environ['HOME']
else:
import pwd
try:
pwent = pwd.getpwnam(path[1:i])
except KeyError:
return path
userhome = pwent[5]
if userhome[-1:] == '/': i = i+1
return userhome + path[i:]
"""Expand ~ and ~user constructions. If user or $HOME is unknown,
do nothing"""
if path[:1] <> '~':
return path
i, n = 1, len(path)
while i < n and path[i] <> '/':
i = i+1
if i == 1:
if not os.environ.has_key('HOME'):
return path
userhome = os.environ['HOME']
else:
import pwd
try:
pwent = pwd.getpwnam(path[1:i])
except KeyError:
return path
userhome = pwent[5]
if userhome[-1:] == '/': i = i+1
return userhome + path[i:]
# Expand paths containing shell variable substitutions.
@ -262,29 +292,31 @@ def expanduser(path):
_varprog = None
def expandvars(path):
global _varprog
if '$' not in path:
return path
if not _varprog:
import re
_varprog = re.compile(r'\$(\w+|\{[^}]*\})')
i = 0
while 1:
m = _varprog.search(path, i)
if not m:
break
i, j = m.span(0)
name = m.group(1)
if name[:1] == '{' and name[-1:] == '}':
name = name[1:-1]
if os.environ.has_key(name):
tail = path[j:]
path = path[:i] + os.environ[name]
i = len(path)
path = path + tail
else:
i = j
return path
"""Expand shell variables of form $var and ${var}. Unknown variables
are left unchanged"""
global _varprog
if '$' not in path:
return path
if not _varprog:
import re
_varprog = re.compile(r'\$(\w+|\{[^}]*\})')
i = 0
while 1:
m = _varprog.search(path, i)
if not m:
break
i, j = m.span(0)
name = m.group(1)
if name[:1] == '{' and name[-1:] == '}':
name = name[1:-1]
if os.environ.has_key(name):
tail = path[j:]
path = path[:i] + os.environ[name]
i = len(path)
path = path + tail
else:
i = j
return path
# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A/B.
@ -292,26 +324,26 @@ def expandvars(path):
# if it contains symbolic links!
def normpath(path):
import string
# Treat initial slashes specially
slashes = ''
while path[:1] == '/':
slashes = slashes + '/'
path = path[1:]
comps = string.splitfields(path, '/')
i = 0
while i < len(comps):
if comps[i] == '.':
del comps[i]
elif comps[i] == '..' and i > 0 and \
comps[i-1] not in ('', '..'):
del comps[i-1:i+1]
i = i-1
elif comps[i] == '' and i > 0 and comps[i-1] <> '':
del comps[i]
else:
i = i+1
# If the path is now empty, substitute '.'
if not comps and not slashes:
comps.append('.')
return slashes + string.joinfields(comps, '/')
"""Normalize path, eliminating double slashes, etc."""
import string
# Treat initial slashes specially
slashes = ''
while path[:1] == '/':
slashes = slashes + '/'
path = path[1:]
comps = string.splitfields(path, '/')
i = 0
while i < len(comps):
if comps[i] == '.':
del comps[i]
elif comps[i] == '..' and i > 0 and comps[i-1] not in ('', '..'):
del comps[i-1:i+1]
i = i-1
elif comps[i] == '' and i > 0 and comps[i-1] <> '':
del comps[i]
else:
i = i+1
# If the path is now empty, substitute '.'
if not comps and not slashes:
comps.append('.')
return slashes + string.joinfields(comps, '/')

View File

@ -5,7 +5,7 @@
import struct
import fcntl
import FCNTL
import os
import os, sys
from test_support import verbose
filename = '/tmp/delete-me'
@ -16,7 +16,12 @@ rv = fcntl.fcntl(f.fileno(), FCNTL.F_SETFL, os.O_NONBLOCK)
if verbose:
print 'Status from fnctl with O_NONBLOCK: ', rv
lockdata = struct.pack('hhllhh', FCNTL.F_WRLCK, 0, 0, 0, 0, 0)
if sys.platform in ('netbsd1', 'freebsd2', 'freebsd3'):
lockdata = struct.pack('lxxxxlxxxxlhh', 0, 0, 0, FCNTL.F_WRLCK, 0)
elif sys.platform in ['aix3', 'aix4']:
lockdata = struct.pack('hhlllii', FCNTL.F_WRLCK, 0, 0, 0, 0, 0, 0)
else:
lockdata = struct.pack('hhllhh', FCNTL.F_WRLCK, 0, 0, 0, 0, 0)
if verbose:
print 'struct.pack: ', `lockdata`

View File

@ -45,6 +45,12 @@ test('split', 'this is the split function',
['this', 'is', 'the', 'split', 'function'])
test('split', 'a|b|c|d', ['a', 'b', 'c', 'd'], '|')
test('split', 'a|b|c|d', ['a', 'b', 'c|d'], '|', 2)
test('split', 'a b c d', ['a', 'b c d'], None, 1)
test('split', 'a b c d', ['a', 'b', 'c d'], None, 2)
test('split', 'a b c d', ['a', 'b', 'c', 'd'], None, 3)
test('split', 'a b c d', ['a', 'b', 'c', 'd'], None, 4)
test('split', 'a b c d', ['a', 'b', 'c', 'd'], None, 0)
test('split', 'a b c d', ['a', 'b', 'c d'], None, 2)
# join now works with any sequence type
class Sequence:
@ -67,6 +73,15 @@ test('rstrip', ' hello ', ' hello')
test('swapcase', 'HeLLo cOmpUteRs', 'hEllO CoMPuTErS')
test('translate', 'xyzabcdef', 'xyzxyz', transtable, 'def')
test('replace', 'one!two!three!', 'one@two!three!', '!', '@', 1)
test('replace', 'one!two!three!', 'one@two@three!', '!', '@', 2)
test('replace', 'one!two!three!', 'one@two@three@', '!', '@', 3)
test('replace', 'one!two!three!', 'one@two@three@', '!', '@', 4)
test('replace', 'one!two!three!', 'one@two@three@', '!', '@', 0)
test('replace', 'one!two!three!', 'one@two@three@', '!', '@')
test('replace', 'one!two!three!', 'one!two!three!', 'x', '@')
test('replace', 'one!two!three!', 'one!two!three!', 'x', '@', 2)
strop.whitespace
strop.lowercase
strop.uppercase

View File

@ -8,7 +8,7 @@ if time.ctime(t) <> time.asctime(time.localtime(t)):
print 'time.ctime(t) <> time.asctime(time.localtime(t))'
time.daylight
if int(time.mktime(time.localtime(t))) <> int(t):
if long(time.mktime(time.localtime(t))) <> long(t):
print 'time.mktime(time.localtime(t)) <> t'
time.sleep(1.2)