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src/plugins/thirdParty/Python/scripts/set_python_path.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,244 @@ | ||
| #!/usr/bin/env python | ||
| """ | ||
| Based on `move-virtualenv`, updated for Python 3 and Windows with | ||
| activation script processing removed. | ||
| ======================================================================= | ||
| move-virtualenv`, a helper script that moves virtualenvs to a new | ||
| location. https://github.com/fireteam/virtualenv-tools. | ||
| Copyright (c) 2012 by Fireteam Ltd., see AUTHORS for more details. | ||
| Redistribution and use in source and binary forms, with or without | ||
| modification, are permitted provided that the following conditions are | ||
| met: | ||
| * Redistributions of source code must retain the above copyright | ||
| notice, this list of conditions and the following disclaimer. | ||
| * Redistributions in binary form must reproduce the above | ||
| copyright notice, this list of conditions and the following | ||
| disclaimer in the documentation and/or other materials provided | ||
| with the distribution. | ||
| * The names of the contributors may not be used to endorse or | ||
| promote products derived from this software without specific | ||
| prior written permission. | ||
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| ======================================================================= | ||
| """ | ||
| import os | ||
| import re | ||
| import sys | ||
| import logging | ||
| import marshal | ||
| import argparse | ||
| import subprocess | ||
| from types import CodeType | ||
| from collections import OrderedDict | ||
|
|
||
| windows = (os.name == 'nt') | ||
|
|
||
| python_exe = 'python.exe' if windows else 'python' | ||
| path_slash = '\\' if windows else '/' | ||
| bin_python = path_slash + 'bin' + path_slash + python_exe | ||
|
|
||
| _pybin_match = re.compile(r'^python\d+\.\d+$') | ||
|
|
||
| def update_script(script_filename, new_path, clear_args, extra_args): | ||
| """Updates shebang lines for actual scripts.""" | ||
| try: | ||
| with open(script_filename, 'r') as f: | ||
| lines = list(f) | ||
| except (IsADirectoryError, UnicodeDecodeError, PermissionError): | ||
| return | ||
|
|
||
| if not lines: | ||
| return | ||
|
|
||
| if not lines[0].startswith('#!'): | ||
| return | ||
|
|
||
| line = lines[0][2:] | ||
| if line[0] in ['"', "'"]: | ||
| has_quote = True | ||
| quote = line[0] | ||
| end = line[1:].index(quote) + 1 | ||
| args = [line[1:end]] + line[end+1:].split() | ||
| else: | ||
| has_quote = False | ||
| quote = '"' | ||
| args = line.strip().split() | ||
|
|
||
| if not args: | ||
| return | ||
|
|
||
| if not args[0].endswith(bin_python) \ | ||
| or '/usr/bin/env python' in args[0]: | ||
| return | ||
|
|
||
| if clear_args: del args[1:] | ||
| arg_set = OrderedDict([(a, None) for a in args[1:]]) | ||
| arg_set.update(OrderedDict([(a, None) for a in extra_args])) | ||
| new_args = list(arg_set.keys()) | ||
|
|
||
| add_quote = (' ' in new_path) | ||
| new_bin = os.path.join(new_path, 'bin', python_exe) | ||
| if new_bin == args[0] and has_quote == add_quote and new_args == args[1:]: | ||
| return | ||
|
|
||
| if add_quote: | ||
| args[0] = '%s%s%s' % (quote, new_bin, quote) | ||
| else: | ||
| args[0] = new_bin | ||
| args[1:] = new_args | ||
|
|
||
| logging.info('S: %s', script_filename) | ||
| lines[0] = '#!%s\n' % ' '.join(args) | ||
| with open(script_filename, 'w') as f: | ||
| f.writelines(lines) | ||
|
|
||
|
|
||
| def update_scripts(bin_dir, new_path, clear_args, extra_args): | ||
| """Updates all scripts in the bin folder.""" | ||
| for fn in os.listdir(bin_dir): | ||
| update_script(os.path.join(bin_dir, fn), new_path, clear_args, extra_args) | ||
|
|
||
|
|
||
| def update_pyc(filename, new_path): | ||
| """Updates the filenames stored in pyc files.""" | ||
| with open(filename, 'rb') as f: | ||
| if sys.version_info < (3, 3): magic = f.read(8) | ||
| else: magic = f.read(12) | ||
| code = marshal.loads(f.read()) | ||
|
|
||
| def _make_code(code, filename, consts): | ||
| return CodeType(code.co_argcount, code.co_kwonlyargcount, code.co_nlocals, | ||
| code.co_stacksize, code.co_flags, code.co_code, | ||
| tuple(consts), code.co_names, code.co_varnames, filename, | ||
| code.co_name, code.co_firstlineno, code.co_lnotab, | ||
| code.co_freevars, code.co_cellvars) | ||
|
|
||
| def _process(code): | ||
| new_filename = new_path | ||
| consts = [] | ||
| for const in code.co_consts: | ||
| if type(const) is CodeType: | ||
| const = _process(const) | ||
| consts.append(const) | ||
| if new_path != code.co_filename or consts != list(code.co_consts): | ||
| code = _make_code(code, new_path, consts) | ||
| return code | ||
|
|
||
| new_code = _process(code) | ||
|
|
||
| if new_code is not code: | ||
| logging.info('B: %s', filename) | ||
| with open(filename, 'wb') as f: | ||
| f.write(magic) | ||
| marshal.dump(new_code, f) | ||
|
|
||
|
|
||
| def update_pycs(lib_dir, new_path, lib_name): | ||
| """Walks over all pyc files and updates their paths.""" | ||
| files = [] | ||
|
|
||
| def get_new_path(filename): | ||
| filename = os.path.normpath(filename) | ||
| if filename.startswith(lib_dir.rstrip('/') + '/'): | ||
| return os.path.join(new_path, filename[len(lib_dir) + 1:]) | ||
|
|
||
| for dirname, dirnames, filenames in os.walk(lib_dir): | ||
| for filename in filenames: | ||
| filename = os.path.join(dirname, filename) | ||
| if (filename.endswith(('.pyc', '.pyo')) | ||
| and not os.path.dirname(filename).endswith('__pycache__')): | ||
| local_path = get_new_path(filename) | ||
| if local_path is not None: | ||
| update_pyc(filename, local_path) | ||
|
|
||
|
|
||
| def update_paths(base, scripts_dir, clear_args, extra_args): | ||
| """Updates all paths in a virtualenv to a new one.""" | ||
| new_path = os.path.abspath(base) | ||
| bin_dir = os.path.join(base, 'bin') | ||
| lib_dir = None | ||
| lib_name = None | ||
|
|
||
| if scripts_dir == 'auto': | ||
| if windows: | ||
| scripts_dir = os.path.join(base, 'Scripts') | ||
| else: | ||
| scripts_dir = bin_dir | ||
|
|
||
| if windows: | ||
| base_lib_dir = base | ||
| lib_name = 'Lib' | ||
| else: | ||
| base_lib_dir = os.path.join(base, 'lib') | ||
| if os.path.isdir(base_lib_dir): | ||
| for folder in os.listdir(base_lib_dir): | ||
| if _pybin_match.match(folder): | ||
| lib_name = folder | ||
| break | ||
|
|
||
| if (lib_name is None | ||
| or not os.path.isdir(scripts_dir) | ||
| or not os.path.isdir(bin_dir) | ||
| or not os.path.isfile(os.path.join(bin_dir, python_exe))): | ||
| print('error: %s does not refer to a Python installation' % base) | ||
| return False | ||
|
|
||
| lib_dir = os.path.join(base_lib_dir, lib_name) | ||
|
|
||
| update_scripts(scripts_dir, new_path, clear_args, extra_args) | ||
| update_pycs(lib_dir, new_path, lib_name) | ||
|
|
||
| return True | ||
|
|
||
|
|
||
| def main(): | ||
| parser = argparse.ArgumentParser(description='Update the path of scripts ' | ||
| 'to a new Python prefix') | ||
|
|
||
| parser.add_argument('-c', '--clear-args', dest='clear_args', | ||
| default=False, action='store_true', | ||
| help='Clear all existing arguments to Python') | ||
|
|
||
| parser.add_argument('-u', '--update-path', dest='update_path', | ||
| help='Path to scripts. Set to "auto" for autodetection') | ||
|
|
||
| parser.add_argument('-v', '--verbose', dest='verbose', | ||
| default=False, action='store_true', | ||
| help='Show names of updated scripts') | ||
|
|
||
| parser.add_argument('path', metavar='PATH', help='Path to new Python installation.') | ||
|
|
||
| parser.add_argument('extra_args', metavar='ARGS', nargs=argparse.REMAINDER, | ||
| help='Additional arguments to append to Python') | ||
|
|
||
| args = parser.parse_args() | ||
| if not args.update_path: | ||
| args.update_path = 'auto' | ||
|
|
||
| if not args.verbose: | ||
| logging.disable(logging.INFO) | ||
|
|
||
| sys.exit(0 if update_paths(args.path, args.update_path, args.clear_args, args.extra_args) else 1) | ||
|
|
||
|
|
||
| if __name__ == '__main__': | ||
| main() |
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