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datastruct.py
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datastruct.py
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#-----------------------------------------------------------------------------
# Copyright (c) 2005-2023, PyInstaller Development Team.
#
# Distributed under the terms of the GNU General Public License (version 2
# or later) with exception for distributing the bootloader.
#
# The full license is in the file COPYING.txt, distributed with this software.
#
# SPDX-License-Identifier: (GPL-2.0-or-later WITH Bootloader-exception)
#-----------------------------------------------------------------------------
import os
import pathlib
import warnings
from PyInstaller import log as logging
from PyInstaller.building.utils import _check_guts_eq
from PyInstaller.utils import misc
logger = logging.getLogger(__name__)
def unique_name(entry):
"""
Return the filename used to enforce uniqueness for the given TOC entry.
Parameters
----------
entry : tuple
Returns
-------
unique_name: str
"""
name, path, typecode = entry
if typecode in ('BINARY', 'DATA', 'EXTENSION', 'DEPENDENCY'):
name = os.path.normcase(name)
return name
# This class is deprecated and has been replaced by plain lists with explicit normalization (de-duplication) via
# `normalize_toc` and `normalize_pyz_toc` helper functions.
class TOC(list):
"""
TOC (Table of Contents) class is a list of tuples of the form (name, path, typecode).
typecode name path description
--------------------------------------------------------------------------------------
EXTENSION Python internal name. Full path name in build. Extension module.
PYSOURCE Python internal name. Full path name in build. Script.
PYMODULE Python internal name. Full path name in build. Pure Python module (including __init__ modules).
PYZ Runtime name. Full path name in build. A .pyz archive (ZlibArchive data structure).
PKG Runtime name. Full path name in build. A .pkg archive (Carchive data structure).
BINARY Runtime name. Full path name in build. Shared library.
DATA Runtime name. Full path name in build. Arbitrary files.
OPTION The option. Unused. Python runtime option (frozen into executable).
A TOC contains various types of files. A TOC contains no duplicates and preserves order.
PyInstaller uses TOC data type to collect necessary files bundle them into an executable.
"""
def __init__(self, initlist=None):
super().__init__()
# Deprecation warning
warnings.warn(
"TOC class is deprecated. Use a plain list of 3-element tuples instead.",
DeprecationWarning,
stacklevel=2,
)
self.filenames = set()
if initlist:
for entry in initlist:
self.append(entry)
def append(self, entry):
if not isinstance(entry, tuple):
logger.info("TOC found a %s, not a tuple", entry)
raise TypeError("Expected tuple, not %s." % type(entry).__name__)
unique = unique_name(entry)
if unique not in self.filenames:
self.filenames.add(unique)
super().append(entry)
def insert(self, pos, entry):
if not isinstance(entry, tuple):
logger.info("TOC found a %s, not a tuple", entry)
raise TypeError("Expected tuple, not %s." % type(entry).__name__)
unique = unique_name(entry)
if unique not in self.filenames:
self.filenames.add(unique)
super().insert(pos, entry)
def __add__(self, other):
result = TOC(self)
result.extend(other)
return result
def __radd__(self, other):
result = TOC(other)
result.extend(self)
return result
def __iadd__(self, other):
for entry in other:
self.append(entry)
return self
def extend(self, other):
# TODO: look if this can be done more efficient with out the loop, e.g. by not using a list as base at all.
for entry in other:
self.append(entry)
def __sub__(self, other):
# Construct new TOC with entries not contained in the other TOC
other = TOC(other)
return TOC([entry for entry in self if unique_name(entry) not in other.filenames])
def __rsub__(self, other):
result = TOC(other)
return result.__sub__(self)
def __setitem__(self, key, value):
if isinstance(key, slice):
if key == slice(None, None, None):
# special case: set the entire list
self.filenames = set()
self.clear()
self.extend(value)
return
else:
raise KeyError("TOC.__setitem__ doesn't handle slices")
else:
old_value = self[key]
old_name = unique_name(old_value)
self.filenames.remove(old_name)
new_name = unique_name(value)
if new_name not in self.filenames:
self.filenames.add(new_name)
super(TOC, self).__setitem__(key, value)
class Target:
invcnum = 0
def __init__(self):
from PyInstaller.config import CONF
# Get a (per class) unique number to avoid conflicts between toc objects
self.invcnum = self.__class__.invcnum
self.__class__.invcnum += 1
self.tocfilename = os.path.join(CONF['workpath'], '%s-%02d.toc' % (self.__class__.__name__, self.invcnum))
self.tocbasename = os.path.basename(self.tocfilename)
self.dependencies = []
def __postinit__(self):
"""
Check if the target need to be rebuild and if so, re-assemble.
`__postinit__` is to be called at the end of `__init__` of every subclass of Target. `__init__` is meant to
setup the parameters and `__postinit__` is checking if rebuild is required and in case calls `assemble()`
"""
logger.info("checking %s", self.__class__.__name__)
data = None
last_build = misc.mtime(self.tocfilename)
if last_build == 0:
logger.info("Building %s because %s is non existent", self.__class__.__name__, self.tocbasename)
else:
try:
data = misc.load_py_data_struct(self.tocfilename)
except Exception:
logger.info("Building because %s is bad", self.tocbasename)
else:
# create a dict for easier access
data = dict(zip((g[0] for g in self._GUTS), data))
# assemble if previous data was not found or is outdated
if not data or self._check_guts(data, last_build):
self.assemble()
self._save_guts()
_GUTS = []
def _check_guts(self, data, last_build):
"""
Returns True if rebuild/assemble is required.
"""
if len(data) != len(self._GUTS):
logger.info("Building because %s is bad", self.tocbasename)
return True
for attr, func in self._GUTS:
if func is None:
# no check for this value
continue
if func(attr, data[attr], getattr(self, attr), last_build):
return True
return False
def _save_guts(self):
"""
Save the input parameters and the work-product of this run to maybe avoid regenerating it later.
"""
data = tuple(getattr(self, g[0]) for g in self._GUTS)
misc.save_py_data_struct(self.tocfilename, data)
class Tree(Target, list):
"""
This class is a way of creating a TOC (Table of Contents) list that describes some or all of the files within a
directory.
"""
def __init__(self, root=None, prefix=None, excludes=None, typecode='DATA'):
"""
root
The root of the tree (on the build system).
prefix
Optional prefix to the names of the target system.
excludes
A list of names to exclude. Two forms are allowed:
name
Files with this basename will be excluded (do not include the path).
*.ext
Any file with the given extension will be excluded.
typecode
The typecode to be used for all files found in this tree. See the TOC class for for information about
the typcodes.
"""
Target.__init__(self)
list.__init__(self)
self.root = root
self.prefix = prefix
self.excludes = excludes
self.typecode = typecode
if excludes is None:
self.excludes = []
self.__postinit__()
_GUTS = ( # input parameters
('root', _check_guts_eq),
('prefix', _check_guts_eq),
('excludes', _check_guts_eq),
('typecode', _check_guts_eq),
('data', None), # tested below
# no calculated/analysed values
)
def _check_guts(self, data, last_build):
if Target._check_guts(self, data, last_build):
return True
# Walk the collected directories as check if they have been changed - which means files have been added or
# removed. There is no need to check for the files, since `Tree` is only about the directory contents (which is
# the list of files).
stack = [data['root']]
while stack:
d = stack.pop()
if misc.mtime(d) > last_build:
logger.info("Building %s because directory %s changed", self.tocbasename, d)
return True
for nm in os.listdir(d):
path = os.path.join(d, nm)
if os.path.isdir(path):
stack.append(path)
self[:] = data['data'] # collected files
return False
def _save_guts(self):
# Use the attribute `data` to save the list
self.data = self
super()._save_guts()
del self.data
def assemble(self):
logger.info("Building Tree %s", self.tocbasename)
stack = [(self.root, self.prefix)]
excludes = set()
xexcludes = set()
for name in self.excludes:
if name.startswith('*'):
xexcludes.add(name[1:])
else:
excludes.add(name)
result = []
while stack:
dir, prefix = stack.pop()
for filename in os.listdir(dir):
if filename in excludes:
continue
ext = os.path.splitext(filename)[1]
if ext in xexcludes:
continue
fullfilename = os.path.join(dir, filename)
if prefix:
resfilename = os.path.join(prefix, filename)
else:
resfilename = filename
if os.path.isdir(fullfilename):
stack.append((fullfilename, resfilename))
else:
result.append((resfilename, fullfilename, self.typecode))
self[:] = result
def normalize_toc(toc):
# Default priority: 0
_TOC_TYPE_PRIORITIES = {
# DEPENDENCY entries need to replace original entries, so they need the highest priority.
'DEPENDENCY': 2,
# BINARY/EXTENSION entries undergo additional processing, so give them precedence over DATA and other entries.
'BINARY': 1,
'EXTENSION': 1,
}
def _type_case_normalization_fcn(typecode):
# Case-normalize all entries except OPTION.
return typecode not in {
"OPTION",
}
return _normalize_toc(toc, _TOC_TYPE_PRIORITIES, _type_case_normalization_fcn)
def normalize_pyz_toc(toc):
# Default priority: 0
_TOC_TYPE_PRIORITIES = {
# Ensure that modules are never shadowed by PYZ-embedded data files.
'PYMODULE': 1,
}
return _normalize_toc(toc, _TOC_TYPE_PRIORITIES)
def _normalize_toc(toc, toc_type_priorities, type_case_normalization_fcn=lambda typecode: False):
tmp_toc = dict()
for dest_name, src_name, typecode in toc:
# Always sanitize the dest_name with `os.path.normpath` to remove any local loops with parent directory path
# components. `pathlib` does not seem to offer equivalent functionality.
dest_name = os.path.normpath(dest_name)
# Normalize the destination name for uniqueness. Use `pathlib.PurePath` to ensure that keys are both
# case-normalized (on OSes where applicable) and directory-separator normalized (just in case).
if type_case_normalization_fcn(typecode):
entry_key = pathlib.PurePath(dest_name)
else:
entry_key = dest_name
existing_entry = tmp_toc.get(entry_key)
if existing_entry is None:
# Entry does not exist - insert
tmp_toc[entry_key] = (dest_name, src_name, typecode)
else:
# Entry already exists - replace if its typecode has higher priority
_, _, existing_typecode = existing_entry
if toc_type_priorities.get(typecode, 0) > toc_type_priorities.get(existing_typecode, 0):
tmp_toc[entry_key] = (dest_name, src_name, typecode)
# Return the items as list. The order matches the original order due to python dict maintaining the insertion order.
return list(tmp_toc.values())