diff options
Diffstat (limited to 'jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/scripts.py')
| -rw-r--r-- | jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/scripts.py | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/scripts.py b/jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/scripts.py new file mode 100644 index 0000000..0c051ce --- /dev/null +++ b/jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/scripts.py @@ -0,0 +1,343 @@ +# -*- coding: utf-8 -*- +# +# Copyright (C) 2013 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, fsencode, detect_encoding, ZipFile +from .resources import finder +from .util import (FileOperator, get_export_entry, convert_path, + get_executable, in_venv) + +logger = logging.getLogger(__name__) + +is_posix = os.name == 'posix' or (os.name == 'java' and os._name == 'posix') +is_windows = os.name == "nt" or (os.name == "java" and os._name == "nt") + +_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].*)?$') +SCRIPT_TEMPLATE = '''# -*- coding: utf-8 -*- +if __name__ == '__main__': + import sys, re + + def _resolve(module, func): + __import__(module) + mod = sys.modules[module] + parts = func.split('.') + result = getattr(mod, parts.pop(0)) + for p in parts: + result = getattr(result, p) + return result + + try: + sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0]) + + func = _resolve('%(module)s', '%(func)s') + rc = func() # None interpreted as 0 + except Exception as e: # only supporting Python >= 2.6 + sys.stderr.write('%%s\\n' %% e) + rc = 1 + sys.exit(rc) +''' + + +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 = is_posix + self.variants = set(('', 'X.Y')) + self._fileop = fileop or FileOperator(dry_run) + + def _get_alternate_executable(self, executable, options): + if options.get('gui', False) and is_windows: + dn, fn = os.path.split(executable) + fn = fn.replace('python', 'pythonw') + executable = os.path.join(dn, fn) + return executable + + def _is_shell(self, executable): + """Determine if the specified executable is a .sh (contains a #! line)""" + try: + with open(executable) as fp: + return fp.read(2) == '#!' + except (OSError, IOError): + return False # FIXME log + + def _fix_jython_executable(self, executable): + if sys.platform.startswith('java'): + 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.endswith('jython.exe'): + # Use wrapper exe for Jython on Windows + return executable + + return '/usr/bin/env %s' % executable + + def _get_shebang(self, encoding, post_interp=b'', options=None): + if self.executable: + executable = self.executable + elif not sysconfig.is_python_build(): + executable = get_executable() + elif in_venv(): + executable = os.path.join(sysconfig.get_path('scripts'), + 'python%s' % sysconfig.get_config_var('EXE')) + else: + 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) + + executable = self._fix_jython_executable(executable) + executable = fsencode(executable) + shebang = b'#!' + executable + post_interp + b'\n' + # 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: + 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: + 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, + 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 is_windows + linesep = os.linesep.encode('utf-8') + if not use_launcher: + script_bytes = shebang + linesep + script_bytes + else: + 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 + linesep + zip_data + for name in names: + outname = os.path.join(self.target_dir, name) + if use_launcher: + 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 is_windows and not outname.endswith('.' + ext): + 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): + shebang = self._get_shebang('utf-8', 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[0])) + if 'X.Y' in self.variants: + scriptnames.add('%s-%s' % (name, sys.version[:3])) + 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: + if not self.dry_run: + raise + f = None + else: + encoding, lines = detect_encoding(f.readline) + f.seek(0) + first_line = f.readline() + if not first_line: + 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: + shebang = self._get_shebang(encoding, post_interp) + if b'pythonw' in first_line: + 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 is_windows: + # 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] + result = finder(distlib_package).find(name).bytes + return result + + # 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 |