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Copy pathutil.py
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462 lines (399 loc) · 13.2 KB
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import os
import sys
import errno
import shutil
import re
import posixpath
import tarfile
import platform
import urllib
import subprocess
import shlex
import select
from pythonbrew.define import PATH_BIN, PATH_HOME_ETC_CURRENT, PATH_PYTHONS, PATH_VENVS
from pythonbrew.exceptions import ShellCommandException
from pythonbrew.log import logger
def size_format(b):
kb = 1000
mb = kb*kb
b = float(b)
if b >= mb:
return "%.1fMb" % (b/mb)
if b >= kb:
return "%.1fKb" % (b/kb)
return "%.0fbytes" % (b)
def is_url(name):
if ':' not in name:
return False
scheme = name.split(':', 1)[0].lower()
return scheme in ['http', 'https', 'file', 'ftp']
def is_file(name):
if ':' not in name:
return False
scheme = name.split(':', 1)[0].lower()
return scheme == 'file'
def splitext(name):
base, ext = os.path.splitext(name)
if base.lower().endswith('.tar'):
ext = base[-4:] + ext
base = base[:-4]
return base, ext
def is_archive_file(name):
ext = splitext(name)[1].lower()
archives = ('.zip', '.tar.gz', '.tar.bz2', '.tgz', '.tar')
if ext in archives:
return True
return False
def is_html(content_type):
if content_type and content_type.startswith('text/html'):
return True
return False
def is_gzip(content_type, filename):
if(content_type == 'application/x-gzip'
or splitext(filename)[1].lower() in ('.tar', '.tar.gz', '.tgz')):
return True
if os.path.exists(filename) and tarfile.is_tarfile(filename):
return True
return False
def is_macosx():
mac_ver = platform.mac_ver()[0]
return mac_ver >= '10.6'
def get_macosx_deployment_target():
m = re.search('^([0-9]+\.[0-9]+)', platform.mac_ver()[0])
if m:
return m.group(1)
return None
def _py_version_cmp(v, v1, v2):
if is_str(v):
v = Version(v)
return v >= v1 and v < v2
def is_python24(version):
return _py_version_cmp(version, '2.4', '2.5')
def is_python25(version):
return _py_version_cmp(version, '2.5', '2.6')
def is_python26(version):
return _py_version_cmp(version, '2.6', '2.7')
def is_python27(version):
return _py_version_cmp(version, '2.7', '2.8')
def is_python30(version):
return _py_version_cmp(version, '3.0', '3.1')
def is_python31(version):
return _py_version_cmp(version, '3.1', '3.2')
def is_python32(version):
return _py_version_cmp(version, '3.2', '3.3')
def makedirs(path):
if not os.path.exists(path):
os.makedirs(path)
def symlink(src, dst):
try:
os.symlink(src, dst)
except:
pass
def unlink(path):
try:
os.unlink(path)
except OSError:
e = sys.exc_info()[1]
if errno.ENOENT != e.errno:
raise
def rm_r(path):
"""like rm -r command."""
if os.path.isdir(path):
shutil.rmtree(path)
elif os.path.isfile(path):
unlink(path)
def off():
set_current_path(PATH_BIN, '')
def split_leading_dir(path):
path = str(path)
path = path.lstrip('/').lstrip('\\')
if '/' in path and (('\\' in path and path.find('/') < path.find('\\'))
or '\\' not in path):
return path.split('/', 1)
elif '\\' in path:
return path.split('\\', 1)
else:
return path, ''
def has_leading_dir(paths):
"""Returns true if all the paths have the same leading path name
(i.e., everything is in one subdirectory in an archive)"""
common_prefix = None
for path in paths:
prefix, rest = split_leading_dir(path)
if not prefix:
return False
elif common_prefix is None:
common_prefix = prefix
elif prefix != common_prefix:
return False
return True
def untar_file(filename, location):
if not os.path.exists(location):
os.makedirs(location)
if filename.lower().endswith('.gz') or filename.lower().endswith('.tgz'):
mode = 'r:gz'
elif filename.lower().endswith('.bz2') or filename.lower().endswith('.tbz'):
mode = 'r:bz2'
elif filename.lower().endswith('.tar'):
mode = 'r'
else:
logger.error('Cannot determine compression type for file %s' % filename)
mode = 'r:*'
tar = tarfile.open(filename, mode)
try:
# note: python<=2.5 doesnt seem to know about pax headers, filter them
leading = has_leading_dir([
member.name for member in tar.getmembers()
if member.name != 'pax_global_header'
])
for member in tar.getmembers():
fn = member.name
if fn == 'pax_global_header':
continue
if leading:
fn = split_leading_dir(fn)[1]
path = os.path.join(location, fn)
if member.isdir():
if not os.path.exists(path):
os.makedirs(path)
else:
try:
fp = tar.extractfile(member)
except (KeyError, AttributeError):
e = sys.exc_info()[1]
# Some corrupt tar files seem to produce this
# (specifically bad symlinks)
logger.error('In the tar file %s the member %s is invalid: %s'
% (filename, member.name, e))
continue
if not os.path.exists(os.path.dirname(path)):
os.makedirs(os.path.dirname(path))
destfp = open(path, 'wb')
try:
shutil.copyfileobj(fp, destfp)
finally:
destfp.close()
fp.close()
# note: configure ...etc
os.chmod(path, member.mode)
# note: the file timestamps should be such that asdl_c.py is not invoked.
os.utime(path, (member.mtime, member.mtime))
finally:
tar.close()
def extract_downloadfile(content_type, download_file, target_dir):
logger.info("Extracting %s into %s" % (os.path.basename(download_file), target_dir))
if is_gzip(content_type, download_file):
untar_file(download_file, target_dir)
else:
logger.error("Cannot determine archive format of %s" % download_file)
return False
return True
def get_command_path(command):
p = subprocess.Popen('command -v %s' % command, stdout=subprocess.PIPE, shell=True)
return to_str(p.communicate()[0].strip())
def get_using_python_path():
return get_command_path('python')
def get_using_python_pkgname():
"""return: Python-<VERSION> or None"""
path = get_using_python_path()
# extract PYTHON NAME FROM PATH
if path.startswith(PATH_PYTHONS):
path = path.replace(PATH_PYTHONS,'').strip(os.sep)
pkgname, rest = path.split(os.sep,1)
return pkgname
if path.startswith(PATH_VENVS):
path = path.replace(PATH_VENVS,'').strip(os.sep)
pkgname, rest = path.split(os.sep,1)
return pkgname
return None
def get_installed_pythons_pkgname():
"""Get the installed python versions list."""
return [d for d in sorted(os.listdir(PATH_PYTHONS))]
def is_installed(name):
pkgname = Package(name).name
pkgdir = os.path.join(PATH_PYTHONS, pkgname)
if not os.path.isdir(pkgdir):
return False
return True
def set_current_path(path_bin, path_lib):
fp = open(PATH_HOME_ETC_CURRENT, 'w')
fp.write('deactivate &> /dev/null\nPATH_PYTHONBREW_CURRENT="%s"\nPATH_PYTHONBREW_CURRENT_LIB="%s"\n' % (path_bin, path_lib))
fp.close()
def path_to_fileurl(path):
path = os.path.normcase(os.path.abspath(path))
url = urllib.quote(path)
url = url.replace(os.path.sep, '/')
url = url.lstrip('/')
return 'file:///' + url
def fileurl_to_path(url):
assert url.startswith('file:'), ('Illegal scheme:%s' % url)
url = '/' + url[len('file:'):].lstrip('/')
return urllib.unquote(url)
def to_str(val):
try:
# python3
if type(val) is bytes:
return val.decode()
except:
if type(val) is unicode:
return val.encode("utf-8")
return val
def is_str(val):
try:
# python2
return isinstance(val, basestring)
except:
# python3
return isinstance(val, str)
return False
def is_sequence(val):
if is_str(val):
return False
return (hasattr(val, "__getitem__") or hasattr(val, "__iter__"))
def bltin_any(iter):
try:
return any(iter)
except:
# python2.4
for it in iter:
if it:
return True
return False
#-----------------------------
# class
#-----------------------------
class Subprocess(object):
def __init__(self, log=None, cwd=None, verbose=False, debug=False):
self._log = log
self._cwd = cwd
self._verbose = verbose
self._debug = debug
def chdir(self, cwd):
self._cwd = cwd
def shell(self, cmd):
if self._debug:
logger.log(cmd)
if is_sequence(cmd):
cmd = ' '.join(cmd)
if self._log:
if self._verbose:
cmd = "(%s) 2>&1 | tee '%s'" % (cmd, self._log)
else:
cmd = "(%s) >> '%s' 2>&1" % (cmd, self._log)
returncode = subprocess.call(cmd, shell=True, cwd=self._cwd)
if returncode:
raise ShellCommandException('%s: failed to `%s`' % (returncode, cmd))
def call(self, cmd):
if is_str(cmd):
cmd = shlex.split(cmd)
if self._debug:
logger.log(cmd)
fp = ((self._log and open(self._log, 'a')) or None)
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=self._cwd)
while p.returncode is None:
while bltin_any(select.select([p.stdout], [], [])):
line = to_str(p.stdout.readline())
if not line:
break
if self._verbose:
logger.log(line.strip())
if fp:
fp.write(line)
fp.flush()
p.poll()
if fp:
fp.close()
return p.returncode
def check_call(self, cmd):
returncode = self.call(cmd)
if returncode:
raise ShellCommandException('%s: failed to `%s`' % (returncode, cmd))
class Package(object):
def __init__(self, name, alias=None):
self.name = None
self.version = None
self.alias = None
if is_archive_file(name):
name = splitext(name)[0]
m = re.search("^Python-(.*)$", name)
if m:
self.name = name
self.version = self.alias = m.group(1)
else:
self.name = "Python-%s" % name
self.version = self.alias = name
if alias:
self.name = 'Python-%s' % alias
self.alias = alias
class Link(object):
def __init__(self, url):
self._url = url
@property
def filename(self):
url = self._url
url = url.split('#', 1)[0]
url = url.split('?', 1)[0]
url = url.rstrip('/')
name = posixpath.basename(url)
assert name, ('URL %r produced no filename' % url)
return name
@property
def base_url(self):
return posixpath.basename(self._url.split('#', 1)[0].split('?', 1)[0])
class Version(object):
"""version compare
"""
def __init__(self, v):
self._version = v
self._p = self._parse_version(v)
def __lt__(self, o):
if is_str(o):
o = self._parse_version(o)
return self._p < o
def __le__(self, o):
if is_str(o):
o = self._parse_version(o)
return self._p <= o
def __eq__(self, o):
if is_str(o):
o = self._parse_version(o)
return self._p == o
def __ne__(self, o):
if is_str(o):
o = self._parse_version(o)
return self._p != o
def __gt__(self, o):
if is_str(o):
o = self._parse_version(o)
return self._p > o
def __ge__(self, o):
if is_str(o):
o = self._parse_version(o)
return self._p >= o
def _parse_version(self, s):
"""see pkg_resouce.parse_version
"""
component_re = re.compile(r'(\d+ | [a-z]+ | \.| -)', re.VERBOSE)
replace = {'pre':'c', 'preview':'c','-':'final-','rc':'c','dev':'@'}.get
def _parse_version_parts(s):
for part in component_re.split(s):
part = replace(part,part)
if not part or part=='.':
continue
if part[:1] in '0123456789':
yield part.zfill(8) # pad for numeric comparison
else:
yield '*'+part
yield '*final' # ensure that alpha/beta/candidate are before final
parts = []
for part in _parse_version_parts(s.lower()):
if part.startswith('*'):
if part<'*final': # remove '-' before a prerelease tag
while parts and parts[-1]=='*final-': parts.pop()
# remove trailing zeros from each series of numeric parts
while parts and parts[-1]=='00000000':
parts.pop()
parts.append(part)
return tuple(parts)
def __repr__(self):
return self._version
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