mirror of
https://github.com/YunoHost-Apps/ffsync_ynh.git
synced 2024-09-03 18:26:38 +02:00
416 lines
17 KiB
Python
416 lines
17 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright (C) 2013-2015 Vinay Sajip.
|
|
# Licensed to the Python Software Foundation under a contributor agreement.
|
|
# See LICENSE.txt and CONTRIBUTORS.txt.
|
|
#
|
|
from io import BytesIO
|
|
import logging
|
|
import os
|
|
import re
|
|
import struct
|
|
import sys
|
|
|
|
from .compat import sysconfig, detect_encoding, ZipFile
|
|
from .resources import finder
|
|
from .util import (FileOperator, get_export_entry, convert_path,
|
|
get_executable, in_venv)
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
_DEFAULT_MANIFEST = '''
|
|
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
|
|
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
|
|
<assemblyIdentity version="1.0.0.0"
|
|
processorArchitecture="X86"
|
|
name="%s"
|
|
type="win32"/>
|
|
|
|
<!-- Identify the application security requirements. -->
|
|
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
|
|
<security>
|
|
<requestedPrivileges>
|
|
<requestedExecutionLevel level="asInvoker" uiAccess="false"/>
|
|
</requestedPrivileges>
|
|
</security>
|
|
</trustInfo>
|
|
</assembly>'''.strip()
|
|
|
|
# check if Python is called on the first line with this expression
|
|
FIRST_LINE_RE = re.compile(b'^#!.*pythonw?[0-9.]*([ \t].*)?$')
|
|
SCRIPT_TEMPLATE = r'''# -*- coding: utf-8 -*-
|
|
import re
|
|
import sys
|
|
from %(module)s import %(import_name)s
|
|
if __name__ == '__main__':
|
|
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
|
sys.exit(%(func)s())
|
|
'''
|
|
|
|
|
|
def _enquote_executable(executable):
|
|
if ' ' in executable:
|
|
# make sure we quote only the executable in case of env
|
|
# for example /usr/bin/env "/dir with spaces/bin/jython"
|
|
# instead of "/usr/bin/env /dir with spaces/bin/jython"
|
|
# otherwise whole
|
|
if executable.startswith('/usr/bin/env '):
|
|
env, _executable = executable.split(' ', 1)
|
|
if ' ' in _executable and not _executable.startswith('"'):
|
|
executable = '%s "%s"' % (env, _executable)
|
|
else:
|
|
if not executable.startswith('"'):
|
|
executable = '"%s"' % executable
|
|
return executable
|
|
|
|
|
|
class ScriptMaker(object):
|
|
"""
|
|
A class to copy or create scripts from source scripts or callable
|
|
specifications.
|
|
"""
|
|
script_template = SCRIPT_TEMPLATE
|
|
|
|
executable = None # for shebangs
|
|
|
|
def __init__(self, source_dir, target_dir, add_launchers=True,
|
|
dry_run=False, fileop=None):
|
|
self.source_dir = source_dir
|
|
self.target_dir = target_dir
|
|
self.add_launchers = add_launchers
|
|
self.force = False
|
|
self.clobber = False
|
|
# It only makes sense to set mode bits on POSIX.
|
|
self.set_mode = (os.name == 'posix') or (os.name == 'java' and
|
|
os._name == 'posix')
|
|
self.variants = set(('', 'X.Y'))
|
|
self._fileop = fileop or FileOperator(dry_run)
|
|
|
|
self._is_nt = os.name == 'nt' or (
|
|
os.name == 'java' and os._name == 'nt')
|
|
|
|
def _get_alternate_executable(self, executable, options):
|
|
if options.get('gui', False) and self._is_nt: # pragma: no cover
|
|
dn, fn = os.path.split(executable)
|
|
fn = fn.replace('python', 'pythonw')
|
|
executable = os.path.join(dn, fn)
|
|
return executable
|
|
|
|
if sys.platform.startswith('java'): # pragma: no cover
|
|
def _is_shell(self, executable):
|
|
"""
|
|
Determine if the specified executable is a script
|
|
(contains a #! line)
|
|
"""
|
|
try:
|
|
with open(executable) as fp:
|
|
return fp.read(2) == '#!'
|
|
except (OSError, IOError):
|
|
logger.warning('Failed to open %s', executable)
|
|
return False
|
|
|
|
def _fix_jython_executable(self, executable):
|
|
if self._is_shell(executable):
|
|
# Workaround for Jython is not needed on Linux systems.
|
|
import java
|
|
|
|
if java.lang.System.getProperty('os.name') == 'Linux':
|
|
return executable
|
|
elif executable.lower().endswith('jython.exe'):
|
|
# Use wrapper exe for Jython on Windows
|
|
return executable
|
|
return '/usr/bin/env %s' % executable
|
|
|
|
def _build_shebang(self, executable, post_interp):
|
|
"""
|
|
Build a shebang line. In the simple case (on Windows, or a shebang line
|
|
which is not too long or contains spaces) use a simple formulation for
|
|
the shebang. Otherwise, use /bin/sh as the executable, with a contrived
|
|
shebang which allows the script to run either under Python or sh, using
|
|
suitable quoting. Thanks to Harald Nordgren for his input.
|
|
|
|
See also: http://www.in-ulm.de/~mascheck/various/shebang/#length
|
|
https://hg.mozilla.org/mozilla-central/file/tip/mach
|
|
"""
|
|
if os.name != 'posix':
|
|
simple_shebang = True
|
|
else:
|
|
# Add 3 for '#!' prefix and newline suffix.
|
|
shebang_length = len(executable) + len(post_interp) + 3
|
|
if sys.platform == 'darwin':
|
|
max_shebang_length = 512
|
|
else:
|
|
max_shebang_length = 127
|
|
simple_shebang = ((b' ' not in executable) and
|
|
(shebang_length <= max_shebang_length))
|
|
|
|
if simple_shebang:
|
|
result = b'#!' + executable + post_interp + b'\n'
|
|
else:
|
|
result = b'#!/bin/sh\n'
|
|
result += b"'''exec' " + executable + post_interp + b' "$0" "$@"\n'
|
|
result += b"' '''"
|
|
return result
|
|
|
|
def _get_shebang(self, encoding, post_interp=b'', options=None):
|
|
enquote = True
|
|
if self.executable:
|
|
executable = self.executable
|
|
enquote = False # assume this will be taken care of
|
|
elif not sysconfig.is_python_build():
|
|
executable = get_executable()
|
|
elif in_venv(): # pragma: no cover
|
|
executable = os.path.join(sysconfig.get_path('scripts'),
|
|
'python%s' % sysconfig.get_config_var('EXE'))
|
|
else: # pragma: no cover
|
|
executable = os.path.join(
|
|
sysconfig.get_config_var('BINDIR'),
|
|
'python%s%s' % (sysconfig.get_config_var('VERSION'),
|
|
sysconfig.get_config_var('EXE')))
|
|
if options:
|
|
executable = self._get_alternate_executable(executable, options)
|
|
|
|
if sys.platform.startswith('java'): # pragma: no cover
|
|
executable = self._fix_jython_executable(executable)
|
|
|
|
# Normalise case for Windows - COMMENTED OUT
|
|
# executable = os.path.normcase(executable)
|
|
# N.B. The normalising operation above has been commented out: See
|
|
# issue #124. Although paths in Windows are generally case-insensitive,
|
|
# they aren't always. For example, a path containing a ẞ (which is a
|
|
# LATIN CAPITAL LETTER SHARP S - U+1E9E) is normcased to ß (which is a
|
|
# LATIN SMALL LETTER SHARP S' - U+00DF). The two are not considered by
|
|
# Windows as equivalent in path names.
|
|
|
|
# If the user didn't specify an executable, it may be necessary to
|
|
# cater for executable paths with spaces (not uncommon on Windows)
|
|
if enquote:
|
|
executable = _enquote_executable(executable)
|
|
# Issue #51: don't use fsencode, since we later try to
|
|
# check that the shebang is decodable using utf-8.
|
|
executable = executable.encode('utf-8')
|
|
# in case of IronPython, play safe and enable frames support
|
|
if (sys.platform == 'cli' and '-X:Frames' not in post_interp
|
|
and '-X:FullFrames' not in post_interp): # pragma: no cover
|
|
post_interp += b' -X:Frames'
|
|
shebang = self._build_shebang(executable, post_interp)
|
|
# Python parser starts to read a script using UTF-8 until
|
|
# it gets a #coding:xxx cookie. The shebang has to be the
|
|
# first line of a file, the #coding:xxx cookie cannot be
|
|
# written before. So the shebang has to be decodable from
|
|
# UTF-8.
|
|
try:
|
|
shebang.decode('utf-8')
|
|
except UnicodeDecodeError: # pragma: no cover
|
|
raise ValueError(
|
|
'The shebang (%r) is not decodable from utf-8' % shebang)
|
|
# If the script is encoded to a custom encoding (use a
|
|
# #coding:xxx cookie), the shebang has to be decodable from
|
|
# the script encoding too.
|
|
if encoding != 'utf-8':
|
|
try:
|
|
shebang.decode(encoding)
|
|
except UnicodeDecodeError: # pragma: no cover
|
|
raise ValueError(
|
|
'The shebang (%r) is not decodable '
|
|
'from the script encoding (%r)' % (shebang, encoding))
|
|
return shebang
|
|
|
|
def _get_script_text(self, entry):
|
|
return self.script_template % dict(module=entry.prefix,
|
|
import_name=entry.suffix.split('.')[0],
|
|
func=entry.suffix)
|
|
|
|
manifest = _DEFAULT_MANIFEST
|
|
|
|
def get_manifest(self, exename):
|
|
base = os.path.basename(exename)
|
|
return self.manifest % base
|
|
|
|
def _write_script(self, names, shebang, script_bytes, filenames, ext):
|
|
use_launcher = self.add_launchers and self._is_nt
|
|
linesep = os.linesep.encode('utf-8')
|
|
if not shebang.endswith(linesep):
|
|
shebang += linesep
|
|
if not use_launcher:
|
|
script_bytes = shebang + script_bytes
|
|
else: # pragma: no cover
|
|
if ext == 'py':
|
|
launcher = self._get_launcher('t')
|
|
else:
|
|
launcher = self._get_launcher('w')
|
|
stream = BytesIO()
|
|
with ZipFile(stream, 'w') as zf:
|
|
zf.writestr('__main__.py', script_bytes)
|
|
zip_data = stream.getvalue()
|
|
script_bytes = launcher + shebang + zip_data
|
|
for name in names:
|
|
outname = os.path.join(self.target_dir, name)
|
|
if use_launcher: # pragma: no cover
|
|
n, e = os.path.splitext(outname)
|
|
if e.startswith('.py'):
|
|
outname = n
|
|
outname = '%s.exe' % outname
|
|
try:
|
|
self._fileop.write_binary_file(outname, script_bytes)
|
|
except Exception:
|
|
# Failed writing an executable - it might be in use.
|
|
logger.warning('Failed to write executable - trying to '
|
|
'use .deleteme logic')
|
|
dfname = '%s.deleteme' % outname
|
|
if os.path.exists(dfname):
|
|
os.remove(dfname) # Not allowed to fail here
|
|
os.rename(outname, dfname) # nor here
|
|
self._fileop.write_binary_file(outname, script_bytes)
|
|
logger.debug('Able to replace executable using '
|
|
'.deleteme logic')
|
|
try:
|
|
os.remove(dfname)
|
|
except Exception:
|
|
pass # still in use - ignore error
|
|
else:
|
|
if self._is_nt and not outname.endswith('.' + ext): # pragma: no cover
|
|
outname = '%s.%s' % (outname, ext)
|
|
if os.path.exists(outname) and not self.clobber:
|
|
logger.warning('Skipping existing file %s', outname)
|
|
continue
|
|
self._fileop.write_binary_file(outname, script_bytes)
|
|
if self.set_mode:
|
|
self._fileop.set_executable_mode([outname])
|
|
filenames.append(outname)
|
|
|
|
def _make_script(self, entry, filenames, options=None):
|
|
post_interp = b''
|
|
if options:
|
|
args = options.get('interpreter_args', [])
|
|
if args:
|
|
args = ' %s' % ' '.join(args)
|
|
post_interp = args.encode('utf-8')
|
|
shebang = self._get_shebang('utf-8', post_interp, options=options)
|
|
script = self._get_script_text(entry).encode('utf-8')
|
|
name = entry.name
|
|
scriptnames = set()
|
|
if '' in self.variants:
|
|
scriptnames.add(name)
|
|
if 'X' in self.variants:
|
|
scriptnames.add('%s%s' % (name, sys.version_info[0]))
|
|
if 'X.Y' in self.variants:
|
|
scriptnames.add('%s-%s.%s' % (name, sys.version_info[0],
|
|
sys.version_info[1]))
|
|
if options and options.get('gui', False):
|
|
ext = 'pyw'
|
|
else:
|
|
ext = 'py'
|
|
self._write_script(scriptnames, shebang, script, filenames, ext)
|
|
|
|
def _copy_script(self, script, filenames):
|
|
adjust = False
|
|
script = os.path.join(self.source_dir, convert_path(script))
|
|
outname = os.path.join(self.target_dir, os.path.basename(script))
|
|
if not self.force and not self._fileop.newer(script, outname):
|
|
logger.debug('not copying %s (up-to-date)', script)
|
|
return
|
|
|
|
# Always open the file, but ignore failures in dry-run mode --
|
|
# that way, we'll get accurate feedback if we can read the
|
|
# script.
|
|
try:
|
|
f = open(script, 'rb')
|
|
except IOError: # pragma: no cover
|
|
if not self.dry_run:
|
|
raise
|
|
f = None
|
|
else:
|
|
first_line = f.readline()
|
|
if not first_line: # pragma: no cover
|
|
logger.warning('%s: %s is an empty file (skipping)',
|
|
self.get_command_name(), script)
|
|
return
|
|
|
|
match = FIRST_LINE_RE.match(first_line.replace(b'\r\n', b'\n'))
|
|
if match:
|
|
adjust = True
|
|
post_interp = match.group(1) or b''
|
|
|
|
if not adjust:
|
|
if f:
|
|
f.close()
|
|
self._fileop.copy_file(script, outname)
|
|
if self.set_mode:
|
|
self._fileop.set_executable_mode([outname])
|
|
filenames.append(outname)
|
|
else:
|
|
logger.info('copying and adjusting %s -> %s', script,
|
|
self.target_dir)
|
|
if not self._fileop.dry_run:
|
|
encoding, lines = detect_encoding(f.readline)
|
|
f.seek(0)
|
|
shebang = self._get_shebang(encoding, post_interp)
|
|
if b'pythonw' in first_line: # pragma: no cover
|
|
ext = 'pyw'
|
|
else:
|
|
ext = 'py'
|
|
n = os.path.basename(outname)
|
|
self._write_script([n], shebang, f.read(), filenames, ext)
|
|
if f:
|
|
f.close()
|
|
|
|
@property
|
|
def dry_run(self):
|
|
return self._fileop.dry_run
|
|
|
|
@dry_run.setter
|
|
def dry_run(self, value):
|
|
self._fileop.dry_run = value
|
|
|
|
if os.name == 'nt' or (os.name == 'java' and os._name == 'nt'): # pragma: no cover
|
|
# Executable launcher support.
|
|
# Launchers are from https://bitbucket.org/vinay.sajip/simple_launcher/
|
|
|
|
def _get_launcher(self, kind):
|
|
if struct.calcsize('P') == 8: # 64-bit
|
|
bits = '64'
|
|
else:
|
|
bits = '32'
|
|
name = '%s%s.exe' % (kind, bits)
|
|
# Issue 31: don't hardcode an absolute package name, but
|
|
# determine it relative to the current package
|
|
distlib_package = __name__.rsplit('.', 1)[0]
|
|
resource = finder(distlib_package).find(name)
|
|
if not resource:
|
|
msg = ('Unable to find resource %s in package %s' % (name,
|
|
distlib_package))
|
|
raise ValueError(msg)
|
|
return resource.bytes
|
|
|
|
# Public API follows
|
|
|
|
def make(self, specification, options=None):
|
|
"""
|
|
Make a script.
|
|
|
|
:param specification: The specification, which is either a valid export
|
|
entry specification (to make a script from a
|
|
callable) or a filename (to make a script by
|
|
copying from a source location).
|
|
:param options: A dictionary of options controlling script generation.
|
|
:return: A list of all absolute pathnames written to.
|
|
"""
|
|
filenames = []
|
|
entry = get_export_entry(specification)
|
|
if entry is None:
|
|
self._copy_script(specification, filenames)
|
|
else:
|
|
self._make_script(entry, filenames, options=options)
|
|
return filenames
|
|
|
|
def make_multiple(self, specifications, options=None):
|
|
"""
|
|
Take a list of specifications and make scripts from them,
|
|
:param specifications: A list of specifications.
|
|
:return: A list of all absolute pathnames written to,
|
|
"""
|
|
filenames = []
|
|
for specification in specifications:
|
|
filenames.extend(self.make(specification, options))
|
|
return filenames
|