644 lines
21 KiB
Python
644 lines
21 KiB
Python
# MIT License
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#
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# Copyright The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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"""Builders and other things for the local site.
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Here's where we'll duplicate the functionality of autoconf until we
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move it into the installation procedure or use something like qmconf.
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The code that reads the registry to find MSVC components was borrowed
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from distutils.msvccompiler.
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"""
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import errno
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import os
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import shutil
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import stat
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import sys
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import time
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import SCons.Action
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import SCons.Builder
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import SCons.CacheDir
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import SCons.Environment
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import SCons.PathList
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import SCons.Subst
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import SCons.Tool
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import SCons.Scanner.Dir
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# A placeholder for a default Environment (for fetching source files
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# from source code management systems and the like). This must be
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# initialized later, after the top-level directory is set by the calling
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# interface.
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_default_env = None
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# Lazily instantiate the default environment so the overhead of creating
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# it doesn't apply when it's not needed.
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def _fetch_DefaultEnvironment(*args, **kw):
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"""Returns the already-created default construction environment."""
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global _default_env
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return _default_env
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def DefaultEnvironment(*args, **kw):
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"""
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Initial public entry point for creating the default construction
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Environment.
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After creating the environment, we overwrite our name
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(DefaultEnvironment) with the _fetch_DefaultEnvironment() function,
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which more efficiently returns the initialized default construction
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environment without checking for its existence.
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(This function still exists with its _default_check because someone
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else (*cough* Script/__init__.py *cough*) may keep a reference
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to this function. So we can't use the fully functional idiom of
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having the name originally be a something that *only* creates the
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construction environment and then overwrites the name.)
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"""
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global _default_env
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if not _default_env:
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import SCons.Util
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_default_env = SCons.Environment.Environment(*args, **kw)
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if SCons.Util.md5:
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_default_env.Decider('MD5')
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else:
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_default_env.Decider('timestamp-match')
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global DefaultEnvironment
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DefaultEnvironment = _fetch_DefaultEnvironment
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_default_env._CacheDir_path = None
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return _default_env
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# Emitters for setting the shared attribute on object files,
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# and an action for checking that all of the source files
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# going into a shared library are, in fact, shared.
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def StaticObjectEmitter(target, source, env):
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for tgt in target:
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tgt.attributes.shared = None
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return (target, source)
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def SharedObjectEmitter(target, source, env):
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for tgt in target:
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tgt.attributes.shared = 1
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return (target, source)
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def SharedFlagChecker(source, target, env):
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same = env.subst('$STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME')
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if same == '0' or same == '' or same == 'False':
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for src in source:
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try:
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shared = src.attributes.shared
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except AttributeError:
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shared = None
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if not shared:
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raise SCons.Errors.UserError(
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"Source file: %s is static and is not compatible with shared target: %s" % (src, target[0]))
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SharedCheck = SCons.Action.Action(SharedFlagChecker, None)
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# Some people were using these variable name before we made
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# SourceFileScanner part of the public interface. Don't break their
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# SConscript files until we've given them some fair warning and a
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# transition period.
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CScan = SCons.Tool.CScanner
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DScan = SCons.Tool.DScanner
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LaTeXScan = SCons.Tool.LaTeXScanner
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ObjSourceScan = SCons.Tool.SourceFileScanner
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ProgScan = SCons.Tool.ProgramScanner
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# These aren't really tool scanners, so they don't quite belong with
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# the rest of those in Tool/__init__.py, but I'm not sure where else
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# they should go. Leave them here for now.
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DirScanner = SCons.Scanner.Dir.DirScanner()
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DirEntryScanner = SCons.Scanner.Dir.DirEntryScanner()
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# Actions for common languages.
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CAction = SCons.Action.Action("$CCCOM", "$CCCOMSTR")
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ShCAction = SCons.Action.Action("$SHCCCOM", "$SHCCCOMSTR")
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CXXAction = SCons.Action.Action("$CXXCOM", "$CXXCOMSTR")
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ShCXXAction = SCons.Action.Action("$SHCXXCOM", "$SHCXXCOMSTR")
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DAction = SCons.Action.Action("$DCOM", "$DCOMSTR")
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ShDAction = SCons.Action.Action("$SHDCOM", "$SHDCOMSTR")
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ASAction = SCons.Action.Action("$ASCOM", "$ASCOMSTR")
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ASPPAction = SCons.Action.Action("$ASPPCOM", "$ASPPCOMSTR")
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LinkAction = SCons.Action.Action("$LINKCOM", "$LINKCOMSTR")
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ShLinkAction = SCons.Action.Action("$SHLINKCOM", "$SHLINKCOMSTR")
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LdModuleLinkAction = SCons.Action.Action("$LDMODULECOM", "$LDMODULECOMSTR")
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# Common tasks that we allow users to perform in platform-independent
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# ways by creating ActionFactory instances.
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ActionFactory = SCons.Action.ActionFactory
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def get_paths_str(dest):
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# If dest is a list, we need to manually call str() on each element
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if SCons.Util.is_List(dest):
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elem_strs = []
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for element in dest:
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elem_strs.append('"' + str(element) + '"')
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return '[' + ', '.join(elem_strs) + ']'
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else:
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return '"' + str(dest) + '"'
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permission_dic = {
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'u': {
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'r': stat.S_IRUSR,
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'w': stat.S_IWUSR,
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'x': stat.S_IXUSR
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},
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'g': {
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'r': stat.S_IRGRP,
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'w': stat.S_IWGRP,
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'x': stat.S_IXGRP
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},
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'o': {
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'r': stat.S_IROTH,
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'w': stat.S_IWOTH,
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'x': stat.S_IXOTH
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}
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}
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def chmod_func(dest, mode):
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import SCons.Util
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from string import digits
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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if SCons.Util.is_String(mode) and 0 not in [i in digits for i in mode]:
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mode = int(mode, 8)
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if not SCons.Util.is_String(mode):
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for element in dest:
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os.chmod(str(element), mode)
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else:
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mode = str(mode)
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for operation in mode.split(","):
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if "=" in operation:
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operator = "="
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elif "+" in operation:
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operator = "+"
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elif "-" in operation:
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operator = "-"
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else:
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raise SyntaxError("Could not find +, - or =")
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operation_list = operation.split(operator)
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if len(operation_list) != 2:
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raise SyntaxError("More than one operator found")
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user = operation_list[0].strip().replace("a", "ugo")
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permission = operation_list[1].strip()
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new_perm = 0
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for u in user:
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for p in permission:
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try:
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new_perm = new_perm | permission_dic[u][p]
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except KeyError:
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raise SyntaxError("Unrecognized user or permission format")
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for element in dest:
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curr_perm = os.stat(str(element)).st_mode
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if operator == "=":
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os.chmod(str(element), new_perm)
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elif operator == "+":
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os.chmod(str(element), curr_perm | new_perm)
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elif operator == "-":
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os.chmod(str(element), curr_perm & ~new_perm)
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def chmod_strfunc(dest, mode):
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import SCons.Util
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if not SCons.Util.is_String(mode):
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return 'Chmod(%s, 0%o)' % (get_paths_str(dest), mode)
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else:
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return 'Chmod(%s, "%s")' % (get_paths_str(dest), str(mode))
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Chmod = ActionFactory(chmod_func, chmod_strfunc)
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def copy_func(dest, src, symlinks=True):
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"""
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If symlinks (is true), then a symbolic link will be
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shallow copied and recreated as a symbolic link; otherwise, copying
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a symbolic link will be equivalent to copying the symbolic link's
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final target regardless of symbolic link depth.
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"""
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dest = str(dest)
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src = str(src)
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SCons.Node.FS.invalidate_node_memos(dest)
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if SCons.Util.is_List(src) and os.path.isdir(dest):
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for file in src:
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shutil.copy2(file, dest)
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return 0
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elif os.path.islink(src):
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if symlinks:
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return os.symlink(os.readlink(src), dest)
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else:
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return copy_func(dest, os.path.realpath(src))
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elif os.path.isfile(src):
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shutil.copy2(src, dest)
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return 0
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else:
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shutil.copytree(src, dest, symlinks)
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# copytree returns None in python2 and destination string in python3
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# A error is raised in both cases, so we can just return 0 for success
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return 0
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Copy = ActionFactory(
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copy_func,
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lambda dest, src, symlinks=True: 'Copy("%s", "%s")' % (dest, src)
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)
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def delete_func(dest, must_exist=0):
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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for entry in dest:
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entry = str(entry)
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# os.path.exists returns False with broken links that exist
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entry_exists = os.path.exists(entry) or os.path.islink(entry)
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if not entry_exists and not must_exist:
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continue
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# os.path.isdir returns True when entry is a link to a dir
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if os.path.isdir(entry) and not os.path.islink(entry):
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shutil.rmtree(entry, 1)
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continue
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os.unlink(entry)
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def delete_strfunc(dest, must_exist=0):
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return 'Delete(%s)' % get_paths_str(dest)
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Delete = ActionFactory(delete_func, delete_strfunc)
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def mkdir_func(dest):
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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for entry in dest:
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try:
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os.makedirs(str(entry))
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except os.error as e:
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p = str(entry)
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if (e.args[0] == errno.EEXIST or
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(sys.platform == 'win32' and e.args[0] == 183)) \
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and os.path.isdir(str(entry)):
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pass # not an error if already exists
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else:
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raise
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Mkdir = ActionFactory(mkdir_func,
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lambda dir: 'Mkdir(%s)' % get_paths_str(dir))
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def move_func(dest, src):
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SCons.Node.FS.invalidate_node_memos(dest)
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SCons.Node.FS.invalidate_node_memos(src)
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shutil.move(src, dest)
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Move = ActionFactory(move_func,
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lambda dest, src: 'Move("%s", "%s")' % (dest, src),
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convert=str)
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def touch_func(dest):
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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for file in dest:
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file = str(file)
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mtime = int(time.time())
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if os.path.exists(file):
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atime = os.path.getatime(file)
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else:
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with open(file, 'w'):
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atime = mtime
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os.utime(file, (atime, mtime))
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Touch = ActionFactory(touch_func,
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lambda file: 'Touch(%s)' % get_paths_str(file))
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# Internal utility functions
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def _concat(prefix, list, suffix, env, f=lambda x: x, target=None, source=None):
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"""
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Creates a new list from 'list' by first interpolating each element
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in the list using the 'env' dictionary and then calling f on the
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list, and finally calling _concat_ixes to concatenate 'prefix' and
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'suffix' onto each element of the list.
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"""
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if not list:
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return list
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l = f(SCons.PathList.PathList(list).subst_path(env, target, source))
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if l is not None:
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list = l
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return _concat_ixes(prefix, list, suffix, env)
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def _concat_ixes(prefix, list, suffix, env):
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"""
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Creates a new list from 'list' by concatenating the 'prefix' and
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'suffix' arguments onto each element of the list. A trailing space
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on 'prefix' or leading space on 'suffix' will cause them to be put
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into separate list elements rather than being concatenated.
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"""
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result = []
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# ensure that prefix and suffix are strings
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prefix = str(env.subst(prefix, SCons.Subst.SUBST_RAW))
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suffix = str(env.subst(suffix, SCons.Subst.SUBST_RAW))
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for x in list:
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if isinstance(x, SCons.Node.FS.File):
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result.append(x)
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continue
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x = str(x)
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if x:
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if prefix:
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if prefix[-1] == ' ':
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result.append(prefix[:-1])
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elif x[:len(prefix)] != prefix:
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x = prefix + x
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result.append(x)
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if suffix:
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if suffix[0] == ' ':
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result.append(suffix[1:])
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elif x[-len(suffix):] != suffix:
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result[-1] = result[-1] + suffix
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return result
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def _stripixes(prefix, itms, suffix, stripprefixes, stripsuffixes, env, c=None):
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"""
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This is a wrapper around _concat()/_concat_ixes() that checks for
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the existence of prefixes or suffixes on list items and strips them
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where it finds them. This is used by tools (like the GNU linker)
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that need to turn something like 'libfoo.a' into '-lfoo'.
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"""
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if not itms:
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return itms
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if not callable(c):
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env_c = env['_concat']
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if env_c != _concat and callable(env_c):
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# There's a custom _concat() method in the construction
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# environment, and we've allowed people to set that in
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# the past (see test/custom-concat.py), so preserve the
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# backwards compatibility.
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c = env_c
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else:
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c = _concat_ixes
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stripprefixes = list(map(env.subst, SCons.Util.flatten(stripprefixes)))
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stripsuffixes = list(map(env.subst, SCons.Util.flatten(stripsuffixes)))
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stripped = []
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for l in SCons.PathList.PathList(itms).subst_path(env, None, None):
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if isinstance(l, SCons.Node.FS.File):
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stripped.append(l)
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continue
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if not SCons.Util.is_String(l):
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l = str(l)
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for stripprefix in stripprefixes:
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lsp = len(stripprefix)
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if l[:lsp] == stripprefix:
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l = l[lsp:]
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# Do not strip more than one prefix
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break
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for stripsuffix in stripsuffixes:
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lss = len(stripsuffix)
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if l[-lss:] == stripsuffix:
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l = l[:-lss]
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# Do not strip more than one suffix
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break
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stripped.append(l)
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return c(prefix, stripped, suffix, env)
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def processDefines(defs):
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"""process defines, resolving strings, lists, dictionaries, into a list of
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strings
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"""
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if SCons.Util.is_List(defs):
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l = []
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for d in defs:
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if d is None:
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continue
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elif SCons.Util.is_List(d) or isinstance(d, tuple):
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if len(d) >= 2:
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l.append(str(d[0]) + '=' + str(d[1]))
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else:
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l.append(str(d[0]))
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elif SCons.Util.is_Dict(d):
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for macro, value in d.items():
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if value is not None:
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l.append(str(macro) + '=' + str(value))
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else:
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l.append(str(macro))
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elif SCons.Util.is_String(d):
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l.append(str(d))
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else:
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raise SCons.Errors.UserError("DEFINE %s is not a list, dict, string or None." % repr(d))
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elif SCons.Util.is_Dict(defs):
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# The items in a dictionary are stored in random order, but
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# if the order of the command-line options changes from
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# invocation to invocation, then the signature of the command
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# line will change and we'll get random unnecessary rebuilds.
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# Consequently, we have to sort the keys to ensure a
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# consistent order...
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l = []
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for k, v in sorted(defs.items()):
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if v is None:
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l.append(str(k))
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else:
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l.append(str(k) + '=' + str(v))
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else:
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l = [str(defs)]
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return l
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def _defines(prefix, defs, suffix, env, c=_concat_ixes):
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"""A wrapper around _concat_ixes that turns a list or string
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into a list of C preprocessor command-line definitions.
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"""
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return c(prefix, env.subst_path(processDefines(defs)), suffix, env)
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class NullCmdGenerator:
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"""This is a callable class that can be used in place of other
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|
command generators if you don't want them to do anything.
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|
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The __call__ method for this class simply returns the thing
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|
you instantiated it with.
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Example usage:
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env["DO_NOTHING"] = NullCmdGenerator
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env["LINKCOM"] = "${DO_NOTHING('$LINK $SOURCES $TARGET')}"
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"""
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def __init__(self, cmd):
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self.cmd = cmd
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|
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def __call__(self, target, source, env, for_signature=None):
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return self.cmd
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|
|
|
|
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class Variable_Method_Caller:
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|
"""A class for finding a construction variable on the stack and
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|
calling one of its methods.
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|
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|
We use this to support "construction variables" in our string
|
|
eval()s that actually stand in for methods--specifically, use
|
|
of "RDirs" in call to _concat that should actually execute the
|
|
"TARGET.RDirs" method. (We used to support this by creating a little
|
|
"build dictionary" that mapped RDirs to the method, but this got in
|
|
the way of Memoizing construction environments, because we had to
|
|
create new environment objects to hold the variables.)
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|
"""
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|
|
|
def __init__(self, variable, method):
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|
self.variable = variable
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|
self.method = method
|
|
|
|
def __call__(self, *args, **kw):
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|
try:
|
|
1 // 0
|
|
except ZeroDivisionError:
|
|
# Don't start iterating with the current stack-frame to
|
|
# prevent creating reference cycles (f_back is safe).
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|
frame = sys.exc_info()[2].tb_frame.f_back
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|
variable = self.variable
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|
while frame:
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|
if variable in frame.f_locals:
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|
v = frame.f_locals[variable]
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|
if v:
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|
method = getattr(v, self.method)
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|
return method(*args, **kw)
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|
frame = frame.f_back
|
|
return None
|
|
|
|
|
|
def __libversionflags(env, version_var, flags_var):
|
|
"""
|
|
if version_var is not empty, returns env[flags_var], otherwise returns None
|
|
:param env:
|
|
:param version_var:
|
|
:param flags_var:
|
|
:return:
|
|
"""
|
|
try:
|
|
if env.subst('$' + version_var):
|
|
return env[flags_var]
|
|
except KeyError:
|
|
pass
|
|
return None
|
|
|
|
|
|
def __lib_either_version_flag(env, version_var1, version_var2, flags_var):
|
|
"""
|
|
if $version_var1 or $version_var2 is not empty, returns env[flags_var], otherwise returns None
|
|
:param env:
|
|
:param version_var1:
|
|
:param version_var2:
|
|
:param flags_var:
|
|
:return:
|
|
"""
|
|
try:
|
|
if env.subst('$' + version_var1) or env.subst('$' + version_var2):
|
|
return env[flags_var]
|
|
except KeyError:
|
|
pass
|
|
return None
|
|
|
|
|
|
ConstructionEnvironment = {
|
|
'BUILDERS': {},
|
|
'SCANNERS': [SCons.Tool.SourceFileScanner],
|
|
'CONFIGUREDIR': '#/.sconf_temp',
|
|
'CONFIGURELOG': '#/config.log',
|
|
'CPPSUFFIXES': SCons.Tool.CSuffixes,
|
|
'DSUFFIXES': SCons.Tool.DSuffixes,
|
|
'ENV': {},
|
|
'IDLSUFFIXES': SCons.Tool.IDLSuffixes,
|
|
'_concat': _concat,
|
|
'_defines': _defines,
|
|
'_stripixes': _stripixes,
|
|
'_LIBFLAGS': '${_concat(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, __env__)}',
|
|
'_LIBDIRFLAGS': '$( ${_concat(LIBDIRPREFIX, LIBPATH, LIBDIRSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
|
|
'_CPPINCFLAGS': '$( ${_concat(INCPREFIX, CPPPATH, INCSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
|
|
'_CPPDEFFLAGS': '${_defines(CPPDEFPREFIX, CPPDEFINES, CPPDEFSUFFIX, __env__)}',
|
|
|
|
'__libversionflags': __libversionflags,
|
|
'__SHLIBVERSIONFLAGS': '${__libversionflags(__env__,"SHLIBVERSION","_SHLIBVERSIONFLAGS")}',
|
|
'__LDMODULEVERSIONFLAGS': '${__libversionflags(__env__,"LDMODULEVERSION","_LDMODULEVERSIONFLAGS")}',
|
|
'__DSHLIBVERSIONFLAGS': '${__libversionflags(__env__,"DSHLIBVERSION","_DSHLIBVERSIONFLAGS")}',
|
|
'__lib_either_version_flag': __lib_either_version_flag,
|
|
|
|
'TEMPFILE': NullCmdGenerator,
|
|
'TEMPFILEARGJOIN': ' ',
|
|
'Dir': Variable_Method_Caller('TARGET', 'Dir'),
|
|
'Dirs': Variable_Method_Caller('TARGET', 'Dirs'),
|
|
'File': Variable_Method_Caller('TARGET', 'File'),
|
|
'RDirs': Variable_Method_Caller('TARGET', 'RDirs'),
|
|
}
|
|
|
|
# Local Variables:
|
|
# tab-width:4
|
|
# indent-tabs-mode:nil
|
|
# End:
|
|
# vim: set expandtab tabstop=4 shiftwidth=4:
|