--- /dev/null
+"""scons.Node.FS
+
+File system nodes.
+
+These Nodes represent the canonical external objects that people think
+of when they think of building software: files and directories.
+
+This holds a "default_fs" variable that should be initialized with an FS
+that can be used by scripts or modules looking for the canonical default.
+
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "src/engine/SCons/Node/FS.py 3842 2008/12/20 22:59:52 scons"
+
+import fnmatch
+from itertools import izip
+import os
+import os.path
+import re
+import shutil
+import stat
+import string
+import sys
+import time
+import cStringIO
+
+import SCons.Action
+from SCons.Debug import logInstanceCreation
+import SCons.Errors
+import SCons.Memoize
+import SCons.Node
+import SCons.Node.Alias
+import SCons.Subst
+import SCons.Util
+import SCons.Warnings
+
+from SCons.Debug import Trace
+
+do_store_info = True
+
+
+class EntryProxyAttributeError(AttributeError):
+ """
+ An AttributeError subclass for recording and displaying the name
+ of the underlying Entry involved in an AttributeError exception.
+ """
+ def __init__(self, entry_proxy, attribute):
+ AttributeError.__init__(self)
+ self.entry_proxy = entry_proxy
+ self.attribute = attribute
+ def __str__(self):
+ entry = self.entry_proxy.get()
+ fmt = "%s instance %s has no attribute %s"
+ return fmt % (entry.__class__.__name__,
+ repr(entry.name),
+ repr(self.attribute))
+
+# The max_drift value: by default, use a cached signature value for
+# any file that's been untouched for more than two days.
+default_max_drift = 2*24*60*60
+
+#
+# We stringify these file system Nodes a lot. Turning a file system Node
+# into a string is non-trivial, because the final string representation
+# can depend on a lot of factors: whether it's a derived target or not,
+# whether it's linked to a repository or source directory, and whether
+# there's duplication going on. The normal technique for optimizing
+# calculations like this is to memoize (cache) the string value, so you
+# only have to do the calculation once.
+#
+# A number of the above factors, however, can be set after we've already
+# been asked to return a string for a Node, because a Repository() or
+# VariantDir() call or the like may not occur until later in SConscript
+# files. So this variable controls whether we bother trying to save
+# string values for Nodes. The wrapper interface can set this whenever
+# they're done mucking with Repository and VariantDir and the other stuff,
+# to let this module know it can start returning saved string values
+# for Nodes.
+#
+Save_Strings = None
+
+def save_strings(val):
+ global Save_Strings
+ Save_Strings = val
+
+#
+# Avoid unnecessary function calls by recording a Boolean value that
+# tells us whether or not os.path.splitdrive() actually does anything
+# on this system, and therefore whether we need to bother calling it
+# when looking up path names in various methods below.
+#
+
+do_splitdrive = None
+
+def initialize_do_splitdrive():
+ global do_splitdrive
+ drive, path = os.path.splitdrive('X:/foo')
+ do_splitdrive = not not drive
+
+initialize_do_splitdrive()
+
+#
+
+needs_normpath_check = None
+
+def initialize_normpath_check():
+ """
+ Initialize the normpath_check regular expression.
+
+ This function is used by the unit tests to re-initialize the pattern
+ when testing for behavior with different values of os.sep.
+ """
+ global needs_normpath_check
+ if os.sep == '/':
+ pattern = r'.*/|\.$|\.\.$'
+ else:
+ pattern = r'.*[/%s]|\.$|\.\.$' % re.escape(os.sep)
+ needs_normpath_check = re.compile(pattern)
+
+initialize_normpath_check()
+
+#
+# SCons.Action objects for interacting with the outside world.
+#
+# The Node.FS methods in this module should use these actions to
+# create and/or remove files and directories; they should *not* use
+# os.{link,symlink,unlink,mkdir}(), etc., directly.
+#
+# Using these SCons.Action objects ensures that descriptions of these
+# external activities are properly displayed, that the displays are
+# suppressed when the -s (silent) option is used, and (most importantly)
+# the actions are disabled when the the -n option is used, in which case
+# there should be *no* changes to the external file system(s)...
+#
+
+if hasattr(os, 'link'):
+ def _hardlink_func(fs, src, dst):
+ # If the source is a symlink, we can't just hard-link to it
+ # because a relative symlink may point somewhere completely
+ # different. We must disambiguate the symlink and then
+ # hard-link the final destination file.
+ while fs.islink(src):
+ link = fs.readlink(src)
+ if not os.path.isabs(link):
+ src = link
+ else:
+ src = os.path.join(os.path.dirname(src), link)
+ fs.link(src, dst)
+else:
+ _hardlink_func = None
+
+if hasattr(os, 'symlink'):
+ def _softlink_func(fs, src, dst):
+ fs.symlink(src, dst)
+else:
+ _softlink_func = None
+
+def _copy_func(fs, src, dest):
+ shutil.copy2(src, dest)
+ st = fs.stat(src)
+ fs.chmod(dest, stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
+
+
+Valid_Duplicates = ['hard-soft-copy', 'soft-hard-copy',
+ 'hard-copy', 'soft-copy', 'copy']
+
+Link_Funcs = [] # contains the callables of the specified duplication style
+
+def set_duplicate(duplicate):
+ # Fill in the Link_Funcs list according to the argument
+ # (discarding those not available on the platform).
+
+ # Set up the dictionary that maps the argument names to the
+ # underlying implementations. We do this inside this function,
+ # not in the top-level module code, so that we can remap os.link
+ # and os.symlink for testing purposes.
+ link_dict = {
+ 'hard' : _hardlink_func,
+ 'soft' : _softlink_func,
+ 'copy' : _copy_func
+ }
+
+ if not duplicate in Valid_Duplicates:
+ raise SCons.Errors.InternalError, ("The argument of set_duplicate "
+ "should be in Valid_Duplicates")
+ global Link_Funcs
+ Link_Funcs = []
+ for func in string.split(duplicate,'-'):
+ if link_dict[func]:
+ Link_Funcs.append(link_dict[func])
+
+def LinkFunc(target, source, env):
+ # Relative paths cause problems with symbolic links, so
+ # we use absolute paths, which may be a problem for people
+ # who want to move their soft-linked src-trees around. Those
+ # people should use the 'hard-copy' mode, softlinks cannot be
+ # used for that; at least I have no idea how ...
+ src = source[0].abspath
+ dest = target[0].abspath
+ dir, file = os.path.split(dest)
+ if dir and not target[0].fs.isdir(dir):
+ os.makedirs(dir)
+ if not Link_Funcs:
+ # Set a default order of link functions.
+ set_duplicate('hard-soft-copy')
+ fs = source[0].fs
+ # Now link the files with the previously specified order.
+ for func in Link_Funcs:
+ try:
+ func(fs, src, dest)
+ break
+ except (IOError, OSError):
+ # An OSError indicates something happened like a permissions
+ # problem or an attempt to symlink across file-system
+ # boundaries. An IOError indicates something like the file
+ # not existing. In either case, keeping trying additional
+ # functions in the list and only raise an error if the last
+ # one failed.
+ if func == Link_Funcs[-1]:
+ # exception of the last link method (copy) are fatal
+ raise
+ return 0
+
+Link = SCons.Action.Action(LinkFunc, None)
+def LocalString(target, source, env):
+ return 'Local copy of %s from %s' % (target[0], source[0])
+
+LocalCopy = SCons.Action.Action(LinkFunc, LocalString)
+
+def UnlinkFunc(target, source, env):
+ t = target[0]
+ t.fs.unlink(t.abspath)
+ return 0
+
+Unlink = SCons.Action.Action(UnlinkFunc, None)
+
+def MkdirFunc(target, source, env):
+ t = target[0]
+ if not t.exists():
+ t.fs.mkdir(t.abspath)
+ return 0
+
+Mkdir = SCons.Action.Action(MkdirFunc, None, presub=None)
+
+MkdirBuilder = None
+
+def get_MkdirBuilder():
+ global MkdirBuilder
+ if MkdirBuilder is None:
+ import SCons.Builder
+ import SCons.Defaults
+ # "env" will get filled in by Executor.get_build_env()
+ # calling SCons.Defaults.DefaultEnvironment() when necessary.
+ MkdirBuilder = SCons.Builder.Builder(action = Mkdir,
+ env = None,
+ explain = None,
+ is_explicit = None,
+ target_scanner = SCons.Defaults.DirEntryScanner,
+ name = "MkdirBuilder")
+ return MkdirBuilder
+
+class _Null:
+ pass
+
+_null = _Null()
+
+DefaultSCCSBuilder = None
+DefaultRCSBuilder = None
+
+def get_DefaultSCCSBuilder():
+ global DefaultSCCSBuilder
+ if DefaultSCCSBuilder is None:
+ import SCons.Builder
+ # "env" will get filled in by Executor.get_build_env()
+ # calling SCons.Defaults.DefaultEnvironment() when necessary.
+ act = SCons.Action.Action('$SCCSCOM', '$SCCSCOMSTR')
+ DefaultSCCSBuilder = SCons.Builder.Builder(action = act,
+ env = None,
+ name = "DefaultSCCSBuilder")
+ return DefaultSCCSBuilder
+
+def get_DefaultRCSBuilder():
+ global DefaultRCSBuilder
+ if DefaultRCSBuilder is None:
+ import SCons.Builder
+ # "env" will get filled in by Executor.get_build_env()
+ # calling SCons.Defaults.DefaultEnvironment() when necessary.
+ act = SCons.Action.Action('$RCS_COCOM', '$RCS_COCOMSTR')
+ DefaultRCSBuilder = SCons.Builder.Builder(action = act,
+ env = None,
+ name = "DefaultRCSBuilder")
+ return DefaultRCSBuilder
+
+# Cygwin's os.path.normcase pretends it's on a case-sensitive filesystem.
+_is_cygwin = sys.platform == "cygwin"
+if os.path.normcase("TeSt") == os.path.normpath("TeSt") and not _is_cygwin:
+ def _my_normcase(x):
+ return x
+else:
+ def _my_normcase(x):
+ return string.upper(x)
+
+
+
+class DiskChecker:
+ def __init__(self, type, do, ignore):
+ self.type = type
+ self.do = do
+ self.ignore = ignore
+ self.set_do()
+ def set_do(self):
+ self.__call__ = self.do
+ def set_ignore(self):
+ self.__call__ = self.ignore
+ def set(self, list):
+ if self.type in list:
+ self.set_do()
+ else:
+ self.set_ignore()
+
+def do_diskcheck_match(node, predicate, errorfmt):
+ result = predicate()
+ try:
+ # If calling the predicate() cached a None value from stat(),
+ # remove it so it doesn't interfere with later attempts to
+ # build this Node as we walk the DAG. (This isn't a great way
+ # to do this, we're reaching into an interface that doesn't
+ # really belong to us, but it's all about performance, so
+ # for now we'll just document the dependency...)
+ if node._memo['stat'] is None:
+ del node._memo['stat']
+ except (AttributeError, KeyError):
+ pass
+ if result:
+ raise TypeError, errorfmt % node.abspath
+
+def ignore_diskcheck_match(node, predicate, errorfmt):
+ pass
+
+def do_diskcheck_rcs(node, name):
+ try:
+ rcs_dir = node.rcs_dir
+ except AttributeError:
+ if node.entry_exists_on_disk('RCS'):
+ rcs_dir = node.Dir('RCS')
+ else:
+ rcs_dir = None
+ node.rcs_dir = rcs_dir
+ if rcs_dir:
+ return rcs_dir.entry_exists_on_disk(name+',v')
+ return None
+
+def ignore_diskcheck_rcs(node, name):
+ return None
+
+def do_diskcheck_sccs(node, name):
+ try:
+ sccs_dir = node.sccs_dir
+ except AttributeError:
+ if node.entry_exists_on_disk('SCCS'):
+ sccs_dir = node.Dir('SCCS')
+ else:
+ sccs_dir = None
+ node.sccs_dir = sccs_dir
+ if sccs_dir:
+ return sccs_dir.entry_exists_on_disk('s.'+name)
+ return None
+
+def ignore_diskcheck_sccs(node, name):
+ return None
+
+diskcheck_match = DiskChecker('match', do_diskcheck_match, ignore_diskcheck_match)
+diskcheck_rcs = DiskChecker('rcs', do_diskcheck_rcs, ignore_diskcheck_rcs)
+diskcheck_sccs = DiskChecker('sccs', do_diskcheck_sccs, ignore_diskcheck_sccs)
+
+diskcheckers = [
+ diskcheck_match,
+ diskcheck_rcs,
+ diskcheck_sccs,
+]
+
+def set_diskcheck(list):
+ for dc in diskcheckers:
+ dc.set(list)
+
+def diskcheck_types():
+ return map(lambda dc: dc.type, diskcheckers)
+
+
+
+class EntryProxy(SCons.Util.Proxy):
+ def __get_abspath(self):
+ entry = self.get()
+ return SCons.Subst.SpecialAttrWrapper(entry.get_abspath(),
+ entry.name + "_abspath")
+
+ def __get_filebase(self):
+ name = self.get().name
+ return SCons.Subst.SpecialAttrWrapper(SCons.Util.splitext(name)[0],
+ name + "_filebase")
+
+ def __get_suffix(self):
+ name = self.get().name
+ return SCons.Subst.SpecialAttrWrapper(SCons.Util.splitext(name)[1],
+ name + "_suffix")
+
+ def __get_file(self):
+ name = self.get().name
+ return SCons.Subst.SpecialAttrWrapper(name, name + "_file")
+
+ def __get_base_path(self):
+ """Return the file's directory and file name, with the
+ suffix stripped."""
+ entry = self.get()
+ return SCons.Subst.SpecialAttrWrapper(SCons.Util.splitext(entry.get_path())[0],
+ entry.name + "_base")
+
+ def __get_posix_path(self):
+ """Return the path with / as the path separator,
+ regardless of platform."""
+ if os.sep == '/':
+ return self
+ else:
+ entry = self.get()
+ r = string.replace(entry.get_path(), os.sep, '/')
+ return SCons.Subst.SpecialAttrWrapper(r, entry.name + "_posix")
+
+ def __get_windows_path(self):
+ """Return the path with \ as the path separator,
+ regardless of platform."""
+ if os.sep == '\\':
+ return self
+ else:
+ entry = self.get()
+ r = string.replace(entry.get_path(), os.sep, '\\')
+ return SCons.Subst.SpecialAttrWrapper(r, entry.name + "_windows")
+
+ def __get_srcnode(self):
+ return EntryProxy(self.get().srcnode())
+
+ def __get_srcdir(self):
+ """Returns the directory containing the source node linked to this
+ node via VariantDir(), or the directory of this node if not linked."""
+ return EntryProxy(self.get().srcnode().dir)
+
+ def __get_rsrcnode(self):
+ return EntryProxy(self.get().srcnode().rfile())
+
+ def __get_rsrcdir(self):
+ """Returns the directory containing the source node linked to this
+ node via VariantDir(), or the directory of this node if not linked."""
+ return EntryProxy(self.get().srcnode().rfile().dir)
+
+ def __get_dir(self):
+ return EntryProxy(self.get().dir)
+
+ dictSpecialAttrs = { "base" : __get_base_path,
+ "posix" : __get_posix_path,
+ "windows" : __get_windows_path,
+ "win32" : __get_windows_path,
+ "srcpath" : __get_srcnode,
+ "srcdir" : __get_srcdir,
+ "dir" : __get_dir,
+ "abspath" : __get_abspath,
+ "filebase" : __get_filebase,
+ "suffix" : __get_suffix,
+ "file" : __get_file,
+ "rsrcpath" : __get_rsrcnode,
+ "rsrcdir" : __get_rsrcdir,
+ }
+
+ def __getattr__(self, name):
+ # This is how we implement the "special" attributes
+ # such as base, posix, srcdir, etc.
+ try:
+ attr_function = self.dictSpecialAttrs[name]
+ except KeyError:
+ try:
+ attr = SCons.Util.Proxy.__getattr__(self, name)
+ except AttributeError, e:
+ # Raise our own AttributeError subclass with an
+ # overridden __str__() method that identifies the
+ # name of the entry that caused the exception.
+ raise EntryProxyAttributeError(self, name)
+ return attr
+ else:
+ return attr_function(self)
+
+class Base(SCons.Node.Node):
+ """A generic class for file system entries. This class is for
+ when we don't know yet whether the entry being looked up is a file
+ or a directory. Instances of this class can morph into either
+ Dir or File objects by a later, more precise lookup.
+
+ Note: this class does not define __cmp__ and __hash__ for
+ efficiency reasons. SCons does a lot of comparing of
+ Node.FS.{Base,Entry,File,Dir} objects, so those operations must be
+ as fast as possible, which means we want to use Python's built-in
+ object identity comparisons.
+ """
+
+ memoizer_counters = []
+
+ def __init__(self, name, directory, fs):
+ """Initialize a generic Node.FS.Base object.
+
+ Call the superclass initialization, take care of setting up
+ our relative and absolute paths, identify our parent
+ directory, and indicate that this node should use
+ signatures."""
+ if __debug__: logInstanceCreation(self, 'Node.FS.Base')
+ SCons.Node.Node.__init__(self)
+
+ self.name = name
+ self.suffix = SCons.Util.splitext(name)[1]
+ self.fs = fs
+
+ assert directory, "A directory must be provided"
+
+ self.abspath = directory.entry_abspath(name)
+ self.labspath = directory.entry_labspath(name)
+ if directory.path == '.':
+ self.path = name
+ else:
+ self.path = directory.entry_path(name)
+ if directory.tpath == '.':
+ self.tpath = name
+ else:
+ self.tpath = directory.entry_tpath(name)
+ self.path_elements = directory.path_elements + [self]
+
+ self.dir = directory
+ self.cwd = None # will hold the SConscript directory for target nodes
+ self.duplicate = directory.duplicate
+
+ def str_for_display(self):
+ return '"' + self.__str__() + '"'
+
+ def must_be_same(self, klass):
+ """
+ This node, which already existed, is being looked up as the
+ specified klass. Raise an exception if it isn't.
+ """
+ if self.__class__ is klass or klass is Entry:
+ return
+ raise TypeError, "Tried to lookup %s '%s' as a %s." %\
+ (self.__class__.__name__, self.path, klass.__name__)
+
+ def get_dir(self):
+ return self.dir
+
+ def get_suffix(self):
+ return self.suffix
+
+ def rfile(self):
+ return self
+
+ def __str__(self):
+ """A Node.FS.Base object's string representation is its path
+ name."""
+ global Save_Strings
+ if Save_Strings:
+ return self._save_str()
+ return self._get_str()
+
+ memoizer_counters.append(SCons.Memoize.CountValue('_save_str'))
+
+ def _save_str(self):
+ try:
+ return self._memo['_save_str']
+ except KeyError:
+ pass
+ result = self._get_str()
+ self._memo['_save_str'] = result
+ return result
+
+ def _get_str(self):
+ global Save_Strings
+ if self.duplicate or self.is_derived():
+ return self.get_path()
+ srcnode = self.srcnode()
+ if srcnode.stat() is None and self.stat() is not None:
+ result = self.get_path()
+ else:
+ result = srcnode.get_path()
+ if not Save_Strings:
+ # We're not at the point where we're saving the string string
+ # representations of FS Nodes (because we haven't finished
+ # reading the SConscript files and need to have str() return
+ # things relative to them). That also means we can't yet
+ # cache values returned (or not returned) by stat(), since
+ # Python code in the SConscript files might still create
+ # or otherwise affect the on-disk file. So get rid of the
+ # values that the underlying stat() method saved.
+ try: del self._memo['stat']
+ except KeyError: pass
+ if self is not srcnode:
+ try: del srcnode._memo['stat']
+ except KeyError: pass
+ return result
+
+ rstr = __str__
+
+ memoizer_counters.append(SCons.Memoize.CountValue('stat'))
+
+ def stat(self):
+ try: return self._memo['stat']
+ except KeyError: pass
+ try: result = self.fs.stat(self.abspath)
+ except os.error: result = None
+ self._memo['stat'] = result
+ return result
+
+ def exists(self):
+ return self.stat() is not None
+
+ def rexists(self):
+ return self.rfile().exists()
+
+ def getmtime(self):
+ st = self.stat()
+ if st: return st[stat.ST_MTIME]
+ else: return None
+
+ def getsize(self):
+ st = self.stat()
+ if st: return st[stat.ST_SIZE]
+ else: return None
+
+ def isdir(self):
+ st = self.stat()
+ return st is not None and stat.S_ISDIR(st[stat.ST_MODE])
+
+ def isfile(self):
+ st = self.stat()
+ return st is not None and stat.S_ISREG(st[stat.ST_MODE])
+
+ if hasattr(os, 'symlink'):
+ def islink(self):
+ try: st = self.fs.lstat(self.abspath)
+ except os.error: return 0
+ return stat.S_ISLNK(st[stat.ST_MODE])
+ else:
+ def islink(self):
+ return 0 # no symlinks
+
+ def is_under(self, dir):
+ if self is dir:
+ return 1
+ else:
+ return self.dir.is_under(dir)
+
+ def set_local(self):
+ self._local = 1
+
+ def srcnode(self):
+ """If this node is in a build path, return the node
+ corresponding to its source file. Otherwise, return
+ ourself.
+ """
+ srcdir_list = self.dir.srcdir_list()
+ if srcdir_list:
+ srcnode = srcdir_list[0].Entry(self.name)
+ srcnode.must_be_same(self.__class__)
+ return srcnode
+ return self
+
+ def get_path(self, dir=None):
+ """Return path relative to the current working directory of the
+ Node.FS.Base object that owns us."""
+ if not dir:
+ dir = self.fs.getcwd()
+ if self == dir:
+ return '.'
+ path_elems = self.path_elements
+ try: i = path_elems.index(dir)
+ except ValueError: pass
+ else: path_elems = path_elems[i+1:]
+ path_elems = map(lambda n: n.name, path_elems)
+ return string.join(path_elems, os.sep)
+
+ def set_src_builder(self, builder):
+ """Set the source code builder for this node."""
+ self.sbuilder = builder
+ if not self.has_builder():
+ self.builder_set(builder)
+
+ def src_builder(self):
+ """Fetch the source code builder for this node.
+
+ If there isn't one, we cache the source code builder specified
+ for the directory (which in turn will cache the value from its
+ parent directory, and so on up to the file system root).
+ """
+ try:
+ scb = self.sbuilder
+ except AttributeError:
+ scb = self.dir.src_builder()
+ self.sbuilder = scb
+ return scb
+
+ def get_abspath(self):
+ """Get the absolute path of the file."""
+ return self.abspath
+
+ def for_signature(self):
+ # Return just our name. Even an absolute path would not work,
+ # because that can change thanks to symlinks or remapped network
+ # paths.
+ return self.name
+
+ def get_subst_proxy(self):
+ try:
+ return self._proxy
+ except AttributeError:
+ ret = EntryProxy(self)
+ self._proxy = ret
+ return ret
+
+ def target_from_source(self, prefix, suffix, splitext=SCons.Util.splitext):
+ """
+
+ Generates a target entry that corresponds to this entry (usually
+ a source file) with the specified prefix and suffix.
+
+ Note that this method can be overridden dynamically for generated
+ files that need different behavior. See Tool/swig.py for
+ an example.
+ """
+ return self.dir.Entry(prefix + splitext(self.name)[0] + suffix)
+
+ def _Rfindalldirs_key(self, pathlist):
+ return pathlist
+
+ memoizer_counters.append(SCons.Memoize.CountDict('Rfindalldirs', _Rfindalldirs_key))
+
+ def Rfindalldirs(self, pathlist):
+ """
+ Return all of the directories for a given path list, including
+ corresponding "backing" directories in any repositories.
+
+ The Node lookups are relative to this Node (typically a
+ directory), so memoizing result saves cycles from looking
+ up the same path for each target in a given directory.
+ """
+ try:
+ memo_dict = self._memo['Rfindalldirs']
+ except KeyError:
+ memo_dict = {}
+ self._memo['Rfindalldirs'] = memo_dict
+ else:
+ try:
+ return memo_dict[pathlist]
+ except KeyError:
+ pass
+
+ create_dir_relative_to_self = self.Dir
+ result = []
+ for path in pathlist:
+ if isinstance(path, SCons.Node.Node):
+ result.append(path)
+ else:
+ dir = create_dir_relative_to_self(path)
+ result.extend(dir.get_all_rdirs())
+
+ memo_dict[pathlist] = result
+
+ return result
+
+ def RDirs(self, pathlist):
+ """Search for a list of directories in the Repository list."""
+ cwd = self.cwd or self.fs._cwd
+ return cwd.Rfindalldirs(pathlist)
+
+ memoizer_counters.append(SCons.Memoize.CountValue('rentry'))
+
+ def rentry(self):
+ try:
+ return self._memo['rentry']
+ except KeyError:
+ pass
+ result = self
+ if not self.exists():
+ norm_name = _my_normcase(self.name)
+ for dir in self.dir.get_all_rdirs():
+ try:
+ node = dir.entries[norm_name]
+ except KeyError:
+ if dir.entry_exists_on_disk(self.name):
+ result = dir.Entry(self.name)
+ break
+ self._memo['rentry'] = result
+ return result
+
+ def _glob1(self, pattern, ondisk=True, source=False, strings=False):
+ return []
+
+class Entry(Base):
+ """This is the class for generic Node.FS entries--that is, things
+ that could be a File or a Dir, but we're just not sure yet.
+ Consequently, the methods in this class really exist just to
+ transform their associated object into the right class when the
+ time comes, and then call the same-named method in the transformed
+ class."""
+
+ def diskcheck_match(self):
+ pass
+
+ def disambiguate(self, must_exist=None):
+ """
+ """
+ if self.isdir():
+ self.__class__ = Dir
+ self._morph()
+ elif self.isfile():
+ self.__class__ = File
+ self._morph()
+ self.clear()
+ else:
+ # There was nothing on-disk at this location, so look in
+ # the src directory.
+ #
+ # We can't just use self.srcnode() straight away because
+ # that would create an actual Node for this file in the src
+ # directory, and there might not be one. Instead, use the
+ # dir_on_disk() method to see if there's something on-disk
+ # with that name, in which case we can go ahead and call
+ # self.srcnode() to create the right type of entry.
+ srcdir = self.dir.srcnode()
+ if srcdir != self.dir and \
+ srcdir.entry_exists_on_disk(self.name) and \
+ self.srcnode().isdir():
+ self.__class__ = Dir
+ self._morph()
+ elif must_exist:
+ msg = "No such file or directory: '%s'" % self.abspath
+ raise SCons.Errors.UserError, msg
+ else:
+ self.__class__ = File
+ self._morph()
+ self.clear()
+ return self
+
+ def rfile(self):
+ """We're a generic Entry, but the caller is actually looking for
+ a File at this point, so morph into one."""
+ self.__class__ = File
+ self._morph()
+ self.clear()
+ return File.rfile(self)
+
+ def scanner_key(self):
+ return self.get_suffix()
+
+ def get_contents(self):
+ """Fetch the contents of the entry.
+
+ Since this should return the real contents from the file
+ system, we check to see into what sort of subclass we should
+ morph this Entry."""
+ try:
+ self = self.disambiguate(must_exist=1)
+ except SCons.Errors.UserError:
+ # There was nothing on disk with which to disambiguate
+ # this entry. Leave it as an Entry, but return a null
+ # string so calls to get_contents() in emitters and the
+ # like (e.g. in qt.py) don't have to disambiguate by hand
+ # or catch the exception.
+ return ''
+ else:
+ return self.get_contents()
+
+ def must_be_same(self, klass):
+ """Called to make sure a Node is a Dir. Since we're an
+ Entry, we can morph into one."""
+ if self.__class__ is not klass:
+ self.__class__ = klass
+ self._morph()
+ self.clear()
+
+ # The following methods can get called before the Taskmaster has
+ # had a chance to call disambiguate() directly to see if this Entry
+ # should really be a Dir or a File. We therefore use these to call
+ # disambiguate() transparently (from our caller's point of view).
+ #
+ # Right now, this minimal set of methods has been derived by just
+ # looking at some of the methods that will obviously be called early
+ # in any of the various Taskmasters' calling sequences, and then
+ # empirically figuring out which additional methods are necessary
+ # to make various tests pass.
+
+ def exists(self):
+ """Return if the Entry exists. Check the file system to see
+ what we should turn into first. Assume a file if there's no
+ directory."""
+ return self.disambiguate().exists()
+
+ def rel_path(self, other):
+ d = self.disambiguate()
+ if d.__class__ is Entry:
+ raise "rel_path() could not disambiguate File/Dir"
+ return d.rel_path(other)
+
+ def new_ninfo(self):
+ return self.disambiguate().new_ninfo()
+
+ def changed_since_last_build(self, target, prev_ni):
+ return self.disambiguate().changed_since_last_build(target, prev_ni)
+
+ def _glob1(self, pattern, ondisk=True, source=False, strings=False):
+ return self.disambiguate()._glob1(pattern, ondisk, source, strings)
+
+# This is for later so we can differentiate between Entry the class and Entry
+# the method of the FS class.
+_classEntry = Entry
+
+
+class LocalFS:
+
+ if SCons.Memoize.use_memoizer:
+ __metaclass__ = SCons.Memoize.Memoized_Metaclass
+
+ # This class implements an abstraction layer for operations involving
+ # a local file system. Essentially, this wraps any function in
+ # the os, os.path or shutil modules that we use to actually go do
+ # anything with or to the local file system.
+ #
+ # Note that there's a very good chance we'll refactor this part of
+ # the architecture in some way as we really implement the interface(s)
+ # for remote file system Nodes. For example, the right architecture
+ # might be to have this be a subclass instead of a base class.
+ # Nevertheless, we're using this as a first step in that direction.
+ #
+ # We're not using chdir() yet because the calling subclass method
+ # needs to use os.chdir() directly to avoid recursion. Will we
+ # really need this one?
+ #def chdir(self, path):
+ # return os.chdir(path)
+ def chmod(self, path, mode):
+ return os.chmod(path, mode)
+ def copy(self, src, dst):
+ return shutil.copy(src, dst)
+ def copy2(self, src, dst):
+ return shutil.copy2(src, dst)
+ def exists(self, path):
+ return os.path.exists(path)
+ def getmtime(self, path):
+ return os.path.getmtime(path)
+ def getsize(self, path):
+ return os.path.getsize(path)
+ def isdir(self, path):
+ return os.path.isdir(path)
+ def isfile(self, path):
+ return os.path.isfile(path)
+ def link(self, src, dst):
+ return os.link(src, dst)
+ def lstat(self, path):
+ return os.lstat(path)
+ def listdir(self, path):
+ return os.listdir(path)
+ def makedirs(self, path):
+ return os.makedirs(path)
+ def mkdir(self, path):
+ return os.mkdir(path)
+ def rename(self, old, new):
+ return os.rename(old, new)
+ def stat(self, path):
+ return os.stat(path)
+ def symlink(self, src, dst):
+ return os.symlink(src, dst)
+ def open(self, path):
+ return open(path)
+ def unlink(self, path):
+ return os.unlink(path)
+
+ if hasattr(os, 'symlink'):
+ def islink(self, path):
+ return os.path.islink(path)
+ else:
+ def islink(self, path):
+ return 0 # no symlinks
+
+ if hasattr(os, 'readlink'):
+ def readlink(self, file):
+ return os.readlink(file)
+ else:
+ def readlink(self, file):
+ return ''
+
+
+#class RemoteFS:
+# # Skeleton for the obvious methods we might need from the
+# # abstraction layer for a remote filesystem.
+# def upload(self, local_src, remote_dst):
+# pass
+# def download(self, remote_src, local_dst):
+# pass
+
+
+class FS(LocalFS):
+
+ memoizer_counters = []
+
+ def __init__(self, path = None):
+ """Initialize the Node.FS subsystem.
+
+ The supplied path is the top of the source tree, where we
+ expect to find the top-level build file. If no path is
+ supplied, the current directory is the default.
+
+ The path argument must be a valid absolute path.
+ """
+ if __debug__: logInstanceCreation(self, 'Node.FS')
+
+ self._memo = {}
+
+ self.Root = {}
+ self.SConstruct_dir = None
+ self.max_drift = default_max_drift
+
+ self.Top = None
+ if path is None:
+ self.pathTop = os.getcwd()
+ else:
+ self.pathTop = path
+ self.defaultDrive = _my_normcase(os.path.splitdrive(self.pathTop)[0])
+
+ self.Top = self.Dir(self.pathTop)
+ self.Top.path = '.'
+ self.Top.tpath = '.'
+ self._cwd = self.Top
+
+ DirNodeInfo.fs = self
+ FileNodeInfo.fs = self
+
+ def set_SConstruct_dir(self, dir):
+ self.SConstruct_dir = dir
+
+ def get_max_drift(self):
+ return self.max_drift
+
+ def set_max_drift(self, max_drift):
+ self.max_drift = max_drift
+
+ def getcwd(self):
+ return self._cwd
+
+ def chdir(self, dir, change_os_dir=0):
+ """Change the current working directory for lookups.
+ If change_os_dir is true, we will also change the "real" cwd
+ to match.
+ """
+ curr=self._cwd
+ try:
+ if dir is not None:
+ self._cwd = dir
+ if change_os_dir:
+ os.chdir(dir.abspath)
+ except OSError:
+ self._cwd = curr
+ raise
+
+ def get_root(self, drive):
+ """
+ Returns the root directory for the specified drive, creating
+ it if necessary.
+ """
+ drive = _my_normcase(drive)
+ try:
+ return self.Root[drive]
+ except KeyError:
+ root = RootDir(drive, self)
+ self.Root[drive] = root
+ if not drive:
+ self.Root[self.defaultDrive] = root
+ elif drive == self.defaultDrive:
+ self.Root[''] = root
+ return root
+
+ def _lookup(self, p, directory, fsclass, create=1):
+ """
+ The generic entry point for Node lookup with user-supplied data.
+
+ This translates arbitrary input into a canonical Node.FS object
+ of the specified fsclass. The general approach for strings is
+ to turn it into a fully normalized absolute path and then call
+ the root directory's lookup_abs() method for the heavy lifting.
+
+ If the path name begins with '#', it is unconditionally
+ interpreted relative to the top-level directory of this FS. '#'
+ is treated as a synonym for the top-level SConstruct directory,
+ much like '~' is treated as a synonym for the user's home
+ directory in a UNIX shell. So both '#foo' and '#/foo' refer
+ to the 'foo' subdirectory underneath the top-level SConstruct
+ directory.
+
+ If the path name is relative, then the path is looked up relative
+ to the specified directory, or the current directory (self._cwd,
+ typically the SConscript directory) if the specified directory
+ is None.
+ """
+ if isinstance(p, Base):
+ # It's already a Node.FS object. Make sure it's the right
+ # class and return.
+ p.must_be_same(fsclass)
+ return p
+ # str(p) in case it's something like a proxy object
+ p = str(p)
+
+ initial_hash = (p[0:1] == '#')
+ if initial_hash:
+ # There was an initial '#', so we strip it and override
+ # whatever directory they may have specified with the
+ # top-level SConstruct directory.
+ p = p[1:]
+ directory = self.Top
+
+ if directory and not isinstance(directory, Dir):
+ directory = self.Dir(directory)
+
+ if do_splitdrive:
+ drive, p = os.path.splitdrive(p)
+ else:
+ drive = ''
+ if drive and not p:
+ # This causes a naked drive letter to be treated as a synonym
+ # for the root directory on that drive.
+ p = os.sep
+ absolute = os.path.isabs(p)
+
+ needs_normpath = needs_normpath_check.match(p)
+
+ if initial_hash or not absolute:
+ # This is a relative lookup, either to the top-level
+ # SConstruct directory (because of the initial '#') or to
+ # the current directory (the path name is not absolute).
+ # Add the string to the appropriate directory lookup path,
+ # after which the whole thing gets normalized.
+ if not directory:
+ directory = self._cwd
+ if p:
+ p = directory.labspath + '/' + p
+ else:
+ p = directory.labspath
+
+ if needs_normpath:
+ p = os.path.normpath(p)
+
+ if drive or absolute:
+ root = self.get_root(drive)
+ else:
+ if not directory:
+ directory = self._cwd
+ root = directory.root
+
+ if os.sep != '/':
+ p = string.replace(p, os.sep, '/')
+ return root._lookup_abs(p, fsclass, create)
+
+ def Entry(self, name, directory = None, create = 1):
+ """Look up or create a generic Entry node with the specified name.
+ If the name is a relative path (begins with ./, ../, or a file
+ name), then it is looked up relative to the supplied directory
+ node, or to the top level directory of the FS (supplied at
+ construction time) if no directory is supplied.
+ """
+ return self._lookup(name, directory, Entry, create)
+
+ def File(self, name, directory = None, create = 1):
+ """Look up or create a File node with the specified name. If
+ the name is a relative path (begins with ./, ../, or a file name),
+ then it is looked up relative to the supplied directory node,
+ or to the top level directory of the FS (supplied at construction
+ time) if no directory is supplied.
+
+ This method will raise TypeError if a directory is found at the
+ specified path.
+ """
+ return self._lookup(name, directory, File, create)
+
+ def Dir(self, name, directory = None, create = True):
+ """Look up or create a Dir node with the specified name. If
+ the name is a relative path (begins with ./, ../, or a file name),
+ then it is looked up relative to the supplied directory node,
+ or to the top level directory of the FS (supplied at construction
+ time) if no directory is supplied.
+
+ This method will raise TypeError if a normal file is found at the
+ specified path.
+ """
+ return self._lookup(name, directory, Dir, create)
+
+ def VariantDir(self, variant_dir, src_dir, duplicate=1):
+ """Link the supplied variant directory to the source directory
+ for purposes of building files."""
+
+ if not isinstance(src_dir, SCons.Node.Node):
+ src_dir = self.Dir(src_dir)
+ if not isinstance(variant_dir, SCons.Node.Node):
+ variant_dir = self.Dir(variant_dir)
+ if src_dir.is_under(variant_dir):
+ raise SCons.Errors.UserError, "Source directory cannot be under variant directory."
+ if variant_dir.srcdir:
+ if variant_dir.srcdir == src_dir:
+ return # We already did this.
+ raise SCons.Errors.UserError, "'%s' already has a source directory: '%s'."%(variant_dir, variant_dir.srcdir)
+ variant_dir.link(src_dir, duplicate)
+
+ def Repository(self, *dirs):
+ """Specify Repository directories to search."""
+ for d in dirs:
+ if not isinstance(d, SCons.Node.Node):
+ d = self.Dir(d)
+ self.Top.addRepository(d)
+
+ def variant_dir_target_climb(self, orig, dir, tail):
+ """Create targets in corresponding variant directories
+
+ Climb the directory tree, and look up path names
+ relative to any linked variant directories we find.
+
+ Even though this loops and walks up the tree, we don't memoize
+ the return value because this is really only used to process
+ the command-line targets.
+ """
+ targets = []
+ message = None
+ fmt = "building associated VariantDir targets: %s"
+ start_dir = dir
+ while dir:
+ for bd in dir.variant_dirs:
+ if start_dir.is_under(bd):
+ # If already in the build-dir location, don't reflect
+ return [orig], fmt % str(orig)
+ p = apply(os.path.join, [bd.path] + tail)
+ targets.append(self.Entry(p))
+ tail = [dir.name] + tail
+ dir = dir.up()
+ if targets:
+ message = fmt % string.join(map(str, targets))
+ return targets, message
+
+ def Glob(self, pathname, ondisk=True, source=True, strings=False, cwd=None):
+ """
+ Globs
+
+ This is mainly a shim layer
+ """
+ if cwd is None:
+ cwd = self.getcwd()
+ return cwd.glob(pathname, ondisk, source, strings)
+
+class DirNodeInfo(SCons.Node.NodeInfoBase):
+ # This should get reset by the FS initialization.
+ current_version_id = 1
+
+ fs = None
+
+ def str_to_node(self, s):
+ top = self.fs.Top
+ root = top.root
+ if do_splitdrive:
+ drive, s = os.path.splitdrive(s)
+ if drive:
+ root = self.fs.get_root(drive)
+ if not os.path.isabs(s):
+ s = top.labspath + '/' + s
+ return root._lookup_abs(s, Entry)
+
+class DirBuildInfo(SCons.Node.BuildInfoBase):
+ current_version_id = 1
+
+glob_magic_check = re.compile('[*?[]')
+
+def has_glob_magic(s):
+ return glob_magic_check.search(s) is not None
+
+class Dir(Base):
+ """A class for directories in a file system.
+ """
+
+ memoizer_counters = []
+
+ NodeInfo = DirNodeInfo
+ BuildInfo = DirBuildInfo
+
+ def __init__(self, name, directory, fs):
+ if __debug__: logInstanceCreation(self, 'Node.FS.Dir')
+ Base.__init__(self, name, directory, fs)
+ self._morph()
+
+ def _morph(self):
+ """Turn a file system Node (either a freshly initialized directory
+ object or a separate Entry object) into a proper directory object.
+
+ Set up this directory's entries and hook it into the file
+ system tree. Specify that directories (this Node) don't use
+ signatures for calculating whether they're current.
+ """
+
+ self.repositories = []
+ self.srcdir = None
+
+ self.entries = {}
+ self.entries['.'] = self
+ self.entries['..'] = self.dir
+ self.cwd = self
+ self.searched = 0
+ self._sconsign = None
+ self.variant_dirs = []
+ self.root = self.dir.root
+
+ # Don't just reset the executor, replace its action list,
+ # because it might have some pre-or post-actions that need to
+ # be preserved.
+ self.builder = get_MkdirBuilder()
+ self.get_executor().set_action_list(self.builder.action)
+
+ def diskcheck_match(self):
+ diskcheck_match(self, self.isfile,
+ "File %s found where directory expected.")
+
+ def __clearRepositoryCache(self, duplicate=None):
+ """Called when we change the repository(ies) for a directory.
+ This clears any cached information that is invalidated by changing
+ the repository."""
+
+ for node in self.entries.values():
+ if node != self.dir:
+ if node != self and isinstance(node, Dir):
+ node.__clearRepositoryCache(duplicate)
+ else:
+ node.clear()
+ try:
+ del node._srcreps
+ except AttributeError:
+ pass
+ if duplicate is not None:
+ node.duplicate=duplicate
+
+ def __resetDuplicate(self, node):
+ if node != self:
+ node.duplicate = node.get_dir().duplicate
+
+ def Entry(self, name):
+ """
+ Looks up or creates an entry node named 'name' relative to
+ this directory.
+ """
+ return self.fs.Entry(name, self)
+
+ def Dir(self, name, create=True):
+ """
+ Looks up or creates a directory node named 'name' relative to
+ this directory.
+ """
+ return self.fs.Dir(name, self, create)
+
+ def File(self, name):
+ """
+ Looks up or creates a file node named 'name' relative to
+ this directory.
+ """
+ return self.fs.File(name, self)
+
+ def _lookup_rel(self, name, klass, create=1):
+ """
+ Looks up a *normalized* relative path name, relative to this
+ directory.
+
+ This method is intended for use by internal lookups with
+ already-normalized path data. For general-purpose lookups,
+ use the Entry(), Dir() and File() methods above.
+
+ This method does *no* input checking and will die or give
+ incorrect results if it's passed a non-normalized path name (e.g.,
+ a path containing '..'), an absolute path name, a top-relative
+ ('#foo') path name, or any kind of object.
+ """
+ name = self.entry_labspath(name)
+ return self.root._lookup_abs(name, klass, create)
+
+ def link(self, srcdir, duplicate):
+ """Set this directory as the variant directory for the
+ supplied source directory."""
+ self.srcdir = srcdir
+ self.duplicate = duplicate
+ self.__clearRepositoryCache(duplicate)
+ srcdir.variant_dirs.append(self)
+
+ def getRepositories(self):
+ """Returns a list of repositories for this directory.
+ """
+ if self.srcdir and not self.duplicate:
+ return self.srcdir.get_all_rdirs() + self.repositories
+ return self.repositories
+
+ memoizer_counters.append(SCons.Memoize.CountValue('get_all_rdirs'))
+
+ def get_all_rdirs(self):
+ try:
+ return list(self._memo['get_all_rdirs'])
+ except KeyError:
+ pass
+
+ result = [self]
+ fname = '.'
+ dir = self
+ while dir:
+ for rep in dir.getRepositories():
+ result.append(rep.Dir(fname))
+ if fname == '.':
+ fname = dir.name
+ else:
+ fname = dir.name + os.sep + fname
+ dir = dir.up()
+
+ self._memo['get_all_rdirs'] = list(result)
+
+ return result
+
+ def addRepository(self, dir):
+ if dir != self and not dir in self.repositories:
+ self.repositories.append(dir)
+ dir.tpath = '.'
+ self.__clearRepositoryCache()
+
+ def up(self):
+ return self.entries['..']
+
+ def _rel_path_key(self, other):
+ return str(other)
+
+ memoizer_counters.append(SCons.Memoize.CountDict('rel_path', _rel_path_key))
+
+ def rel_path(self, other):
+ """Return a path to "other" relative to this directory.
+ """
+
+ # This complicated and expensive method, which constructs relative
+ # paths between arbitrary Node.FS objects, is no longer used
+ # by SCons itself. It was introduced to store dependency paths
+ # in .sconsign files relative to the target, but that ended up
+ # being significantly inefficient.
+ #
+ # We're continuing to support the method because some SConstruct
+ # files out there started using it when it was available, and
+ # we're all about backwards compatibility..
+
+ try:
+ memo_dict = self._memo['rel_path']
+ except KeyError:
+ memo_dict = {}
+ self._memo['rel_path'] = memo_dict
+ else:
+ try:
+ return memo_dict[other]
+ except KeyError:
+ pass
+
+ if self is other:
+ result = '.'
+
+ elif not other in self.path_elements:
+ try:
+ other_dir = other.get_dir()
+ except AttributeError:
+ result = str(other)
+ else:
+ if other_dir is None:
+ result = other.name
+ else:
+ dir_rel_path = self.rel_path(other_dir)
+ if dir_rel_path == '.':
+ result = other.name
+ else:
+ result = dir_rel_path + os.sep + other.name
+ else:
+ i = self.path_elements.index(other) + 1
+
+ path_elems = ['..'] * (len(self.path_elements) - i) \
+ + map(lambda n: n.name, other.path_elements[i:])
+
+ result = string.join(path_elems, os.sep)
+
+ memo_dict[other] = result
+
+ return result
+
+ def get_env_scanner(self, env, kw={}):
+ import SCons.Defaults
+ return SCons.Defaults.DirEntryScanner
+
+ def get_target_scanner(self):
+ import SCons.Defaults
+ return SCons.Defaults.DirEntryScanner
+
+ def get_found_includes(self, env, scanner, path):
+ """Return this directory's implicit dependencies.
+
+ We don't bother caching the results because the scan typically
+ shouldn't be requested more than once (as opposed to scanning
+ .h file contents, which can be requested as many times as the
+ files is #included by other files).
+ """
+ if not scanner:
+ return []
+ # Clear cached info for this Dir. If we already visited this
+ # directory on our walk down the tree (because we didn't know at
+ # that point it was being used as the source for another Node)
+ # then we may have calculated build signature before realizing
+ # we had to scan the disk. Now that we have to, though, we need
+ # to invalidate the old calculated signature so that any node
+ # dependent on our directory structure gets one that includes
+ # info about everything on disk.
+ self.clear()
+ return scanner(self, env, path)
+
+ #
+ # Taskmaster interface subsystem
+ #
+
+ def prepare(self):
+ pass
+
+ def build(self, **kw):
+ """A null "builder" for directories."""
+ global MkdirBuilder
+ if self.builder is not MkdirBuilder:
+ apply(SCons.Node.Node.build, [self,], kw)
+
+ #
+ #
+ #
+
+ def _create(self):
+ """Create this directory, silently and without worrying about
+ whether the builder is the default or not."""
+ listDirs = []
+ parent = self
+ while parent:
+ if parent.exists():
+ break
+ listDirs.append(parent)
+ parent = parent.up()
+ else:
+ raise SCons.Errors.StopError, parent.path
+ listDirs.reverse()
+ for dirnode in listDirs:
+ try:
+ # Don't call dirnode.build(), call the base Node method
+ # directly because we definitely *must* create this
+ # directory. The dirnode.build() method will suppress
+ # the build if it's the default builder.
+ SCons.Node.Node.build(dirnode)
+ dirnode.get_executor().nullify()
+ # The build() action may or may not have actually
+ # created the directory, depending on whether the -n
+ # option was used or not. Delete the _exists and
+ # _rexists attributes so they can be reevaluated.
+ dirnode.clear()
+ except OSError:
+ pass
+
+ def multiple_side_effect_has_builder(self):
+ global MkdirBuilder
+ return self.builder is not MkdirBuilder and self.has_builder()
+
+ def alter_targets(self):
+ """Return any corresponding targets in a variant directory.
+ """
+ return self.fs.variant_dir_target_climb(self, self, [])
+
+ def scanner_key(self):
+ """A directory does not get scanned."""
+ return None
+
+ def get_contents(self):
+ """Return content signatures and names of all our children
+ separated by new-lines. Ensure that the nodes are sorted."""
+ contents = []
+ name_cmp = lambda a, b: cmp(a.name, b.name)
+ sorted_children = self.children()[:]
+ sorted_children.sort(name_cmp)
+ for node in sorted_children:
+ contents.append('%s %s\n' % (node.get_csig(), node.name))
+ return string.join(contents, '')
+
+ def get_csig(self):
+ """Compute the content signature for Directory nodes. In
+ general, this is not needed and the content signature is not
+ stored in the DirNodeInfo. However, if get_contents on a Dir
+ node is called which has a child directory, the child
+ directory should return the hash of its contents."""
+ contents = self.get_contents()
+ return SCons.Util.MD5signature(contents)
+
+ def do_duplicate(self, src):
+ pass
+
+ changed_since_last_build = SCons.Node.Node.state_has_changed
+
+ def is_up_to_date(self):
+ """If any child is not up-to-date, then this directory isn't,
+ either."""
+ if self.builder is not MkdirBuilder and not self.exists():
+ return 0
+ up_to_date = SCons.Node.up_to_date
+ for kid in self.children():
+ if kid.get_state() > up_to_date:
+ return 0
+ return 1
+
+ def rdir(self):
+ if not self.exists():
+ norm_name = _my_normcase(self.name)
+ for dir in self.dir.get_all_rdirs():
+ try: node = dir.entries[norm_name]
+ except KeyError: node = dir.dir_on_disk(self.name)
+ if node and node.exists() and \
+ (isinstance(dir, Dir) or isinstance(dir, Entry)):
+ return node
+ return self
+
+ def sconsign(self):
+ """Return the .sconsign file info for this directory,
+ creating it first if necessary."""
+ if not self._sconsign:
+ import SCons.SConsign
+ self._sconsign = SCons.SConsign.ForDirectory(self)
+ return self._sconsign
+
+ def srcnode(self):
+ """Dir has a special need for srcnode()...if we
+ have a srcdir attribute set, then that *is* our srcnode."""
+ if self.srcdir:
+ return self.srcdir
+ return Base.srcnode(self)
+
+ def get_timestamp(self):
+ """Return the latest timestamp from among our children"""
+ stamp = 0
+ for kid in self.children():
+ if kid.get_timestamp() > stamp:
+ stamp = kid.get_timestamp()
+ return stamp
+
+ def entry_abspath(self, name):
+ return self.abspath + os.sep + name
+
+ def entry_labspath(self, name):
+ return self.labspath + '/' + name
+
+ def entry_path(self, name):
+ return self.path + os.sep + name
+
+ def entry_tpath(self, name):
+ return self.tpath + os.sep + name
+
+ def entry_exists_on_disk(self, name):
+ try:
+ d = self.on_disk_entries
+ except AttributeError:
+ d = {}
+ try:
+ entries = os.listdir(self.abspath)
+ except OSError:
+ pass
+ else:
+ for entry in map(_my_normcase, entries):
+ d[entry] = 1
+ self.on_disk_entries = d
+ return d.has_key(_my_normcase(name))
+
+ memoizer_counters.append(SCons.Memoize.CountValue('srcdir_list'))
+
+ def srcdir_list(self):
+ try:
+ return self._memo['srcdir_list']
+ except KeyError:
+ pass
+
+ result = []
+
+ dirname = '.'
+ dir = self
+ while dir:
+ if dir.srcdir:
+ result.append(dir.srcdir.Dir(dirname))
+ dirname = dir.name + os.sep + dirname
+ dir = dir.up()
+
+ self._memo['srcdir_list'] = result
+
+ return result
+
+ def srcdir_duplicate(self, name):
+ for dir in self.srcdir_list():
+ if self.is_under(dir):
+ # We shouldn't source from something in the build path;
+ # variant_dir is probably under src_dir, in which case
+ # we are reflecting.
+ break
+ if dir.entry_exists_on_disk(name):
+ srcnode = dir.Entry(name).disambiguate()
+ if self.duplicate:
+ node = self.Entry(name).disambiguate()
+ node.do_duplicate(srcnode)
+ return node
+ else:
+ return srcnode
+ return None
+
+ def _srcdir_find_file_key(self, filename):
+ return filename
+
+ memoizer_counters.append(SCons.Memoize.CountDict('srcdir_find_file', _srcdir_find_file_key))
+
+ def srcdir_find_file(self, filename):
+ try:
+ memo_dict = self._memo['srcdir_find_file']
+ except KeyError:
+ memo_dict = {}
+ self._memo['srcdir_find_file'] = memo_dict
+ else:
+ try:
+ return memo_dict[filename]
+ except KeyError:
+ pass
+
+ def func(node):
+ if (isinstance(node, File) or isinstance(node, Entry)) and \
+ (node.is_derived() or node.exists()):
+ return node
+ return None
+
+ norm_name = _my_normcase(filename)
+
+ for rdir in self.get_all_rdirs():
+ try: node = rdir.entries[norm_name]
+ except KeyError: node = rdir.file_on_disk(filename)
+ else: node = func(node)
+ if node:
+ result = (node, self)
+ memo_dict[filename] = result
+ return result
+
+ for srcdir in self.srcdir_list():
+ for rdir in srcdir.get_all_rdirs():
+ try: node = rdir.entries[norm_name]
+ except KeyError: node = rdir.file_on_disk(filename)
+ else: node = func(node)
+ if node:
+ result = (File(filename, self, self.fs), srcdir)
+ memo_dict[filename] = result
+ return result
+
+ result = (None, None)
+ memo_dict[filename] = result
+ return result
+
+ def dir_on_disk(self, name):
+ if self.entry_exists_on_disk(name):
+ try: return self.Dir(name)
+ except TypeError: pass
+ node = self.srcdir_duplicate(name)
+ if isinstance(node, File):
+ return None
+ return node
+
+ def file_on_disk(self, name):
+ if self.entry_exists_on_disk(name) or \
+ diskcheck_rcs(self, name) or \
+ diskcheck_sccs(self, name):
+ try: return self.File(name)
+ except TypeError: pass
+ node = self.srcdir_duplicate(name)
+ if isinstance(node, Dir):
+ return None
+ return node
+
+ def walk(self, func, arg):
+ """
+ Walk this directory tree by calling the specified function
+ for each directory in the tree.
+
+ This behaves like the os.path.walk() function, but for in-memory
+ Node.FS.Dir objects. The function takes the same arguments as
+ the functions passed to os.path.walk():
+
+ func(arg, dirname, fnames)
+
+ Except that "dirname" will actually be the directory *Node*,
+ not the string. The '.' and '..' entries are excluded from
+ fnames. The fnames list may be modified in-place to filter the
+ subdirectories visited or otherwise impose a specific order.
+ The "arg" argument is always passed to func() and may be used
+ in any way (or ignored, passing None is common).
+ """
+ entries = self.entries
+ names = entries.keys()
+ names.remove('.')
+ names.remove('..')
+ func(arg, self, names)
+ select_dirs = lambda n, e=entries: isinstance(e[n], Dir)
+ for dirname in filter(select_dirs, names):
+ entries[dirname].walk(func, arg)
+
+ def glob(self, pathname, ondisk=True, source=False, strings=False):
+ """
+ Returns a list of Nodes (or strings) matching a specified
+ pathname pattern.
+
+ Pathname patterns follow UNIX shell semantics: * matches
+ any-length strings of any characters, ? matches any character,
+ and [] can enclose lists or ranges of characters. Matches do
+ not span directory separators.
+
+ The matches take into account Repositories, returning local
+ Nodes if a corresponding entry exists in a Repository (either
+ an in-memory Node or something on disk).
+
+ By defafult, the glob() function matches entries that exist
+ on-disk, in addition to in-memory Nodes. Setting the "ondisk"
+ argument to False (or some other non-true value) causes the glob()
+ function to only match in-memory Nodes. The default behavior is
+ to return both the on-disk and in-memory Nodes.
+
+ The "source" argument, when true, specifies that corresponding
+ source Nodes must be returned if you're globbing in a build
+ directory (initialized with VariantDir()). The default behavior
+ is to return Nodes local to the VariantDir().
+
+ The "strings" argument, when true, returns the matches as strings,
+ not Nodes. The strings are path names relative to this directory.
+
+ The underlying algorithm is adapted from the glob.glob() function
+ in the Python library (but heavily modified), and uses fnmatch()
+ under the covers.
+ """
+ dirname, basename = os.path.split(pathname)
+ if not dirname:
+ return self._glob1(basename, ondisk, source, strings)
+ if has_glob_magic(dirname):
+ list = self.glob(dirname, ondisk, source, strings=False)
+ else:
+ list = [self.Dir(dirname, create=True)]
+ result = []
+ for dir in list:
+ r = dir._glob1(basename, ondisk, source, strings)
+ if strings:
+ r = map(lambda x, d=str(dir): os.path.join(d, x), r)
+ result.extend(r)
+ result.sort(lambda a, b: cmp(str(a), str(b)))
+ return result
+
+ def _glob1(self, pattern, ondisk=True, source=False, strings=False):
+ """
+ Globs for and returns a list of entry names matching a single
+ pattern in this directory.
+
+ This searches any repositories and source directories for
+ corresponding entries and returns a Node (or string) relative
+ to the current directory if an entry is found anywhere.
+
+ TODO: handle pattern with no wildcard
+ """
+ search_dir_list = self.get_all_rdirs()
+ for srcdir in self.srcdir_list():
+ search_dir_list.extend(srcdir.get_all_rdirs())
+
+ selfEntry = self.Entry
+ names = []
+ for dir in search_dir_list:
+ # We use the .name attribute from the Node because the keys of
+ # the dir.entries dictionary are normalized (that is, all upper
+ # case) on case-insensitive systems like Windows.
+ #node_names = [ v.name for k, v in dir.entries.items() if k not in ('.', '..') ]
+ entry_names = filter(lambda n: n not in ('.', '..'), dir.entries.keys())
+ node_names = map(lambda n, e=dir.entries: e[n].name, entry_names)
+ names.extend(node_names)
+ if not strings:
+ # Make sure the working directory (self) actually has
+ # entries for all Nodes in repositories or variant dirs.
+ map(selfEntry, node_names)
+ if ondisk:
+ try:
+ disk_names = os.listdir(dir.abspath)
+ except os.error:
+ continue
+ names.extend(disk_names)
+ if not strings:
+ # We're going to return corresponding Nodes in
+ # the local directory, so we need to make sure
+ # those Nodes exist. We only want to create
+ # Nodes for the entries that will match the
+ # specified pattern, though, which means we
+ # need to filter the list here, even though
+ # the overall list will also be filtered later,
+ # after we exit this loop.
+ if pattern[0] != '.':
+ #disk_names = [ d for d in disk_names if d[0] != '.' ]
+ disk_names = filter(lambda x: x[0] != '.', disk_names)
+ disk_names = fnmatch.filter(disk_names, pattern)
+ dirEntry = dir.Entry
+ for name in disk_names:
+ # Add './' before disk filename so that '#' at
+ # beginning of filename isn't interpreted.
+ name = './' + name
+ node = dirEntry(name).disambiguate()
+ n = selfEntry(name)
+ if n.__class__ != node.__class__:
+ n.__class__ = node.__class__
+ n._morph()
+
+ names = set(names)
+ if pattern[0] != '.':
+ #names = [ n for n in names if n[0] != '.' ]
+ names = filter(lambda x: x[0] != '.', names)
+ names = fnmatch.filter(names, pattern)
+
+ if strings:
+ return names
+
+ #return [ self.entries[_my_normcase(n)] for n in names ]
+ return map(lambda n, e=self.entries: e[_my_normcase(n)], names)
+
+class RootDir(Dir):
+ """A class for the root directory of a file system.
+
+ This is the same as a Dir class, except that the path separator
+ ('/' or '\\') is actually part of the name, so we don't need to
+ add a separator when creating the path names of entries within
+ this directory.
+ """
+ def __init__(self, name, fs):
+ if __debug__: logInstanceCreation(self, 'Node.FS.RootDir')
+ # We're going to be our own parent directory (".." entry and .dir
+ # attribute) so we have to set up some values so Base.__init__()
+ # won't gag won't it calls some of our methods.
+ self.abspath = ''
+ self.labspath = ''
+ self.path = ''
+ self.tpath = ''
+ self.path_elements = []
+ self.duplicate = 0
+ self.root = self
+ Base.__init__(self, name, self, fs)
+
+ # Now set our paths to what we really want them to be: the
+ # initial drive letter (the name) plus the directory separator,
+ # except for the "lookup abspath," which does not have the
+ # drive letter.
+ self.abspath = name + os.sep
+ self.labspath = ''
+ self.path = name + os.sep
+ self.tpath = name + os.sep
+ self._morph()
+
+ self._lookupDict = {}
+
+ # The // and os.sep + os.sep entries are necessary because
+ # os.path.normpath() seems to preserve double slashes at the
+ # beginning of a path (presumably for UNC path names), but
+ # collapses triple slashes to a single slash.
+ self._lookupDict[''] = self
+ self._lookupDict['/'] = self
+ self._lookupDict['//'] = self
+ self._lookupDict[os.sep] = self
+ self._lookupDict[os.sep + os.sep] = self
+
+ def must_be_same(self, klass):
+ if klass is Dir:
+ return
+ Base.must_be_same(self, klass)
+
+ def _lookup_abs(self, p, klass, create=1):
+ """
+ Fast (?) lookup of a *normalized* absolute path.
+
+ This method is intended for use by internal lookups with
+ already-normalized path data. For general-purpose lookups,
+ use the FS.Entry(), FS.Dir() or FS.File() methods.
+
+ The caller is responsible for making sure we're passed a
+ normalized absolute path; we merely let Python's dictionary look
+ up and return the One True Node.FS object for the path.
+
+ If no Node for the specified "p" doesn't already exist, and
+ "create" is specified, the Node may be created after recursive
+ invocation to find or create the parent directory or directories.
+ """
+ k = _my_normcase(p)
+ try:
+ result = self._lookupDict[k]
+ except KeyError:
+ if not create:
+ raise SCons.Errors.UserError
+ # There is no Node for this path name, and we're allowed
+ # to create it.
+ dir_name, file_name = os.path.split(p)
+ dir_node = self._lookup_abs(dir_name, Dir)
+ result = klass(file_name, dir_node, self.fs)
+
+ # Double-check on disk (as configured) that the Node we
+ # created matches whatever is out there in the real world.
+ result.diskcheck_match()
+
+ self._lookupDict[k] = result
+ dir_node.entries[_my_normcase(file_name)] = result
+ dir_node.implicit = None
+ else:
+ # There is already a Node for this path name. Allow it to
+ # complain if we were looking for an inappropriate type.
+ result.must_be_same(klass)
+ return result
+
+ def __str__(self):
+ return self.abspath
+
+ def entry_abspath(self, name):
+ return self.abspath + name
+
+ def entry_labspath(self, name):
+ return '/' + name
+
+ def entry_path(self, name):
+ return self.path + name
+
+ def entry_tpath(self, name):
+ return self.tpath + name
+
+ def is_under(self, dir):
+ if self is dir:
+ return 1
+ else:
+ return 0
+
+ def up(self):
+ return None
+
+ def get_dir(self):
+ return None
+
+ def src_builder(self):
+ return _null
+
+class FileNodeInfo(SCons.Node.NodeInfoBase):
+ current_version_id = 1
+
+ field_list = ['csig', 'timestamp', 'size']
+
+ # This should get reset by the FS initialization.
+ fs = None
+
+ def str_to_node(self, s):
+ top = self.fs.Top
+ root = top.root
+ if do_splitdrive:
+ drive, s = os.path.splitdrive(s)
+ if drive:
+ root = self.fs.get_root(drive)
+ if not os.path.isabs(s):
+ s = top.labspath + '/' + s
+ return root._lookup_abs(s, Entry)
+
+class FileBuildInfo(SCons.Node.BuildInfoBase):
+ current_version_id = 1
+
+ def convert_to_sconsign(self):
+ """
+ Converts this FileBuildInfo object for writing to a .sconsign file
+
+ This replaces each Node in our various dependency lists with its
+ usual string representation: relative to the top-level SConstruct
+ directory, or an absolute path if it's outside.
+ """
+ if os.sep == '/':
+ node_to_str = str
+ else:
+ def node_to_str(n):
+ try:
+ s = n.path
+ except AttributeError:
+ s = str(n)
+ else:
+ s = string.replace(s, os.sep, '/')
+ return s
+ for attr in ['bsources', 'bdepends', 'bimplicit']:
+ try:
+ val = getattr(self, attr)
+ except AttributeError:
+ pass
+ else:
+ setattr(self, attr, map(node_to_str, val))
+ def convert_from_sconsign(self, dir, name):
+ """
+ Converts a newly-read FileBuildInfo object for in-SCons use
+
+ For normal up-to-date checking, we don't have any conversion to
+ perform--but we're leaving this method here to make that clear.
+ """
+ pass
+ def prepare_dependencies(self):
+ """
+ Prepares a FileBuildInfo object for explaining what changed
+
+ The bsources, bdepends and bimplicit lists have all been
+ stored on disk as paths relative to the top-level SConstruct
+ directory. Convert the strings to actual Nodes (for use by the
+ --debug=explain code and --implicit-cache).
+ """
+ attrs = [
+ ('bsources', 'bsourcesigs'),
+ ('bdepends', 'bdependsigs'),
+ ('bimplicit', 'bimplicitsigs'),
+ ]
+ for (nattr, sattr) in attrs:
+ try:
+ strings = getattr(self, nattr)
+ nodeinfos = getattr(self, sattr)
+ except AttributeError:
+ continue
+ nodes = []
+ for s, ni in izip(strings, nodeinfos):
+ if not isinstance(s, SCons.Node.Node):
+ s = ni.str_to_node(s)
+ nodes.append(s)
+ setattr(self, nattr, nodes)
+ def format(self, names=0):
+ result = []
+ bkids = self.bsources + self.bdepends + self.bimplicit
+ bkidsigs = self.bsourcesigs + self.bdependsigs + self.bimplicitsigs
+ for bkid, bkidsig in izip(bkids, bkidsigs):
+ result.append(str(bkid) + ': ' +
+ string.join(bkidsig.format(names=names), ' '))
+ result.append('%s [%s]' % (self.bactsig, self.bact))
+ return string.join(result, '\n')
+
+class File(Base):
+ """A class for files in a file system.
+ """
+
+ memoizer_counters = []
+
+ NodeInfo = FileNodeInfo
+ BuildInfo = FileBuildInfo
+
+ md5_chunksize = 64
+
+ def diskcheck_match(self):
+ diskcheck_match(self, self.isdir,
+ "Directory %s found where file expected.")
+
+ def __init__(self, name, directory, fs):
+ if __debug__: logInstanceCreation(self, 'Node.FS.File')
+ Base.__init__(self, name, directory, fs)
+ self._morph()
+
+ def Entry(self, name):
+ """Create an entry node named 'name' relative to
+ the directory of this file."""
+ return self.dir.Entry(name)
+
+ def Dir(self, name, create=True):
+ """Create a directory node named 'name' relative to
+ the directory of this file."""
+ return self.dir.Dir(name, create=create)
+
+ def Dirs(self, pathlist):
+ """Create a list of directories relative to the SConscript
+ directory of this file."""
+ # TODO(1.5)
+ # return [self.Dir(p) for p in pathlist]
+ return map(lambda p, s=self: s.Dir(p), pathlist)
+
+ def File(self, name):
+ """Create a file node named 'name' relative to
+ the directory of this file."""
+ return self.dir.File(name)
+
+ #def generate_build_dict(self):
+ # """Return an appropriate dictionary of values for building
+ # this File."""
+ # return {'Dir' : self.Dir,
+ # 'File' : self.File,
+ # 'RDirs' : self.RDirs}
+
+ def _morph(self):
+ """Turn a file system node into a File object."""
+ self.scanner_paths = {}
+ if not hasattr(self, '_local'):
+ self._local = 0
+
+ # If there was already a Builder set on this entry, then
+ # we need to make sure we call the target-decider function,
+ # not the source-decider. Reaching in and doing this by hand
+ # is a little bogus. We'd prefer to handle this by adding
+ # an Entry.builder_set() method that disambiguates like the
+ # other methods, but that starts running into problems with the
+ # fragile way we initialize Dir Nodes with their Mkdir builders,
+ # yet still allow them to be overridden by the user. Since it's
+ # not clear right now how to fix that, stick with what works
+ # until it becomes clear...
+ if self.has_builder():
+ self.changed_since_last_build = self.decide_target
+
+ def scanner_key(self):
+ return self.get_suffix()
+
+ def get_contents(self):
+ if not self.rexists():
+ return ''
+ fname = self.rfile().abspath
+ try:
+ r = open(fname, "rb").read()
+ except EnvironmentError, e:
+ if not e.filename:
+ e.filename = fname
+ raise
+ return r
+
+ def get_content_hash(self):
+ """
+ Compute and return the MD5 hash for this file.
+ """
+ if not self.rexists():
+ return SCons.Util.MD5signature('')
+ fname = self.rfile().abspath
+ try:
+ cs = SCons.Util.MD5filesignature(fname,
+ chunksize=SCons.Node.FS.File.md5_chunksize*1024)
+ except EnvironmentError, e:
+ if not e.filename:
+ e.filename = fname
+ raise
+ return cs
+
+
+ memoizer_counters.append(SCons.Memoize.CountValue('get_size'))
+
+ def get_size(self):
+ try:
+ return self._memo['get_size']
+ except KeyError:
+ pass
+
+ if self.rexists():
+ size = self.rfile().getsize()
+ else:
+ size = 0
+
+ self._memo['get_size'] = size
+
+ return size
+
+ memoizer_counters.append(SCons.Memoize.CountValue('get_timestamp'))
+
+ def get_timestamp(self):
+ try:
+ return self._memo['get_timestamp']
+ except KeyError:
+ pass
+
+ if self.rexists():
+ timestamp = self.rfile().getmtime()
+ else:
+ timestamp = 0
+
+ self._memo['get_timestamp'] = timestamp
+
+ return timestamp
+
+ def store_info(self):
+ # Merge our build information into the already-stored entry.
+ # This accomodates "chained builds" where a file that's a target
+ # in one build (SConstruct file) is a source in a different build.
+ # See test/chained-build.py for the use case.
+ if do_store_info:
+ self.dir.sconsign().store_info(self.name, self)
+
+ convert_copy_attrs = [
+ 'bsources',
+ 'bimplicit',
+ 'bdepends',
+ 'bact',
+ 'bactsig',
+ 'ninfo',
+ ]
+
+
+ convert_sig_attrs = [
+ 'bsourcesigs',
+ 'bimplicitsigs',
+ 'bdependsigs',
+ ]
+
+ def convert_old_entry(self, old_entry):
+ # Convert a .sconsign entry from before the Big Signature
+ # Refactoring, doing what we can to convert its information
+ # to the new .sconsign entry format.
+ #
+ # The old format looked essentially like this:
+ #
+ # BuildInfo
+ # .ninfo (NodeInfo)
+ # .bsig
+ # .csig
+ # .timestamp
+ # .size
+ # .bsources
+ # .bsourcesigs ("signature" list)
+ # .bdepends
+ # .bdependsigs ("signature" list)
+ # .bimplicit
+ # .bimplicitsigs ("signature" list)
+ # .bact
+ # .bactsig
+ #
+ # The new format looks like this:
+ #
+ # .ninfo (NodeInfo)
+ # .bsig
+ # .csig
+ # .timestamp
+ # .size
+ # .binfo (BuildInfo)
+ # .bsources
+ # .bsourcesigs (NodeInfo list)
+ # .bsig
+ # .csig
+ # .timestamp
+ # .size
+ # .bdepends
+ # .bdependsigs (NodeInfo list)
+ # .bsig
+ # .csig
+ # .timestamp
+ # .size
+ # .bimplicit
+ # .bimplicitsigs (NodeInfo list)
+ # .bsig
+ # .csig
+ # .timestamp
+ # .size
+ # .bact
+ # .bactsig
+ #
+ # The basic idea of the new structure is that a NodeInfo always
+ # holds all available information about the state of a given Node
+ # at a certain point in time. The various .b*sigs lists can just
+ # be a list of pointers to the .ninfo attributes of the different
+ # dependent nodes, without any copying of information until it's
+ # time to pickle it for writing out to a .sconsign file.
+ #
+ # The complicating issue is that the *old* format only stored one
+ # "signature" per dependency, based on however the *last* build
+ # was configured. We don't know from just looking at it whether
+ # it was a build signature, a content signature, or a timestamp
+ # "signature". Since we no longer use build signatures, the
+ # best we can do is look at the length and if it's thirty two,
+ # assume that it was (or might have been) a content signature.
+ # If it was actually a build signature, then it will cause a
+ # rebuild anyway when it doesn't match the new content signature,
+ # but that's probably the best we can do.
+ import SCons.SConsign
+ new_entry = SCons.SConsign.SConsignEntry()
+ new_entry.binfo = self.new_binfo()
+ binfo = new_entry.binfo
+ for attr in self.convert_copy_attrs:
+ try:
+ value = getattr(old_entry, attr)
+ except AttributeError:
+ continue
+ setattr(binfo, attr, value)
+ delattr(old_entry, attr)
+ for attr in self.convert_sig_attrs:
+ try:
+ sig_list = getattr(old_entry, attr)
+ except AttributeError:
+ continue
+ value = []
+ for sig in sig_list:
+ ninfo = self.new_ninfo()
+ if len(sig) == 32:
+ ninfo.csig = sig
+ else:
+ ninfo.timestamp = sig
+ value.append(ninfo)
+ setattr(binfo, attr, value)
+ delattr(old_entry, attr)
+ return new_entry
+
+ memoizer_counters.append(SCons.Memoize.CountValue('get_stored_info'))
+
+ def get_stored_info(self):
+ try:
+ return self._memo['get_stored_info']
+ except KeyError:
+ pass
+
+ try:
+ sconsign_entry = self.dir.sconsign().get_entry(self.name)
+ except (KeyError, EnvironmentError):
+ import SCons.SConsign
+ sconsign_entry = SCons.SConsign.SConsignEntry()
+ sconsign_entry.binfo = self.new_binfo()
+ sconsign_entry.ninfo = self.new_ninfo()
+ else:
+ if isinstance(sconsign_entry, FileBuildInfo):
+ # This is a .sconsign file from before the Big Signature
+ # Refactoring; convert it as best we can.
+ sconsign_entry = self.convert_old_entry(sconsign_entry)
+ try:
+ delattr(sconsign_entry.ninfo, 'bsig')
+ except AttributeError:
+ pass
+
+ self._memo['get_stored_info'] = sconsign_entry
+
+ return sconsign_entry
+
+ def get_stored_implicit(self):
+ binfo = self.get_stored_info().binfo
+ binfo.prepare_dependencies()
+ try: return binfo.bimplicit
+ except AttributeError: return None
+
+ def rel_path(self, other):
+ return self.dir.rel_path(other)
+
+ def _get_found_includes_key(self, env, scanner, path):
+ return (id(env), id(scanner), path)
+
+ memoizer_counters.append(SCons.Memoize.CountDict('get_found_includes', _get_found_includes_key))
+
+ def get_found_includes(self, env, scanner, path):
+ """Return the included implicit dependencies in this file.
+ Cache results so we only scan the file once per path
+ regardless of how many times this information is requested.
+ """
+ memo_key = (id(env), id(scanner), path)
+ try:
+ memo_dict = self._memo['get_found_includes']
+ except KeyError:
+ memo_dict = {}
+ self._memo['get_found_includes'] = memo_dict
+ else:
+ try:
+ return memo_dict[memo_key]
+ except KeyError:
+ pass
+
+ if scanner:
+ # result = [n.disambiguate() for n in scanner(self, env, path)]
+ result = scanner(self, env, path)
+ result = map(lambda N: N.disambiguate(), result)
+ else:
+ result = []
+
+ memo_dict[memo_key] = result
+
+ return result
+
+ def _createDir(self):
+ # ensure that the directories for this node are
+ # created.
+ self.dir._create()
+
+ def retrieve_from_cache(self):
+ """Try to retrieve the node's content from a cache
+
+ This method is called from multiple threads in a parallel build,
+ so only do thread safe stuff here. Do thread unsafe stuff in
+ built().
+
+ Returns true iff the node was successfully retrieved.
+ """
+ if self.nocache:
+ return None
+ if not self.is_derived():
+ return None
+ return self.get_build_env().get_CacheDir().retrieve(self)
+
+ def built(self):
+ """
+ Called just after this node is successfully built.
+ """
+ # Push this file out to cache before the superclass Node.built()
+ # method has a chance to clear the build signature, which it
+ # will do if this file has a source scanner.
+ #
+ # We have to clear the memoized values *before* we push it to
+ # cache so that the memoization of the self.exists() return
+ # value doesn't interfere.
+ self.clear_memoized_values()
+ if self.exists():
+ self.get_build_env().get_CacheDir().push(self)
+ SCons.Node.Node.built(self)
+
+ def visited(self):
+ if self.exists():
+ self.get_build_env().get_CacheDir().push_if_forced(self)
+
+ ninfo = self.get_ninfo()
+
+ csig = self.get_max_drift_csig()
+ if csig:
+ ninfo.csig = csig
+
+ ninfo.timestamp = self.get_timestamp()
+ ninfo.size = self.get_size()
+
+ if not self.has_builder():
+ # This is a source file, but it might have been a target file
+ # in another build that included more of the DAG. Copy
+ # any build information that's stored in the .sconsign file
+ # into our binfo object so it doesn't get lost.
+ old = self.get_stored_info()
+ self.get_binfo().__dict__.update(old.binfo.__dict__)
+
+ self.store_info()
+
+ def find_src_builder(self):
+ if self.rexists():
+ return None
+ scb = self.dir.src_builder()
+ if scb is _null:
+ if diskcheck_sccs(self.dir, self.name):
+ scb = get_DefaultSCCSBuilder()
+ elif diskcheck_rcs(self.dir, self.name):
+ scb = get_DefaultRCSBuilder()
+ else:
+ scb = None
+ if scb is not None:
+ try:
+ b = self.builder
+ except AttributeError:
+ b = None
+ if b is None:
+ self.builder_set(scb)
+ return scb
+
+ def has_src_builder(self):
+ """Return whether this Node has a source builder or not.
+
+ If this Node doesn't have an explicit source code builder, this
+ is where we figure out, on the fly, if there's a transparent
+ source code builder for it.
+
+ Note that if we found a source builder, we also set the
+ self.builder attribute, so that all of the methods that actually
+ *build* this file don't have to do anything different.
+ """
+ try:
+ scb = self.sbuilder
+ except AttributeError:
+ scb = self.sbuilder = self.find_src_builder()
+ return scb is not None
+
+ def alter_targets(self):
+ """Return any corresponding targets in a variant directory.
+ """
+ if self.is_derived():
+ return [], None
+ return self.fs.variant_dir_target_climb(self, self.dir, [self.name])
+
+ def _rmv_existing(self):
+ self.clear_memoized_values()
+ e = Unlink(self, [], None)
+ if isinstance(e, SCons.Errors.BuildError):
+ raise e
+
+ #
+ # Taskmaster interface subsystem
+ #
+
+ def make_ready(self):
+ self.has_src_builder()
+ self.get_binfo()
+
+ def prepare(self):
+ """Prepare for this file to be created."""
+ SCons.Node.Node.prepare(self)
+
+ if self.get_state() != SCons.Node.up_to_date:
+ if self.exists():
+ if self.is_derived() and not self.precious:
+ self._rmv_existing()
+ else:
+ try:
+ self._createDir()
+ except SCons.Errors.StopError, drive:
+ desc = "No drive `%s' for target `%s'." % (drive, self)
+ raise SCons.Errors.StopError, desc
+
+ #
+ #
+ #
+
+ def remove(self):
+ """Remove this file."""
+ if self.exists() or self.islink():
+ self.fs.unlink(self.path)
+ return 1
+ return None
+
+ def do_duplicate(self, src):
+ self._createDir()
+ Unlink(self, None, None)
+ e = Link(self, src, None)
+ if isinstance(e, SCons.Errors.BuildError):
+ desc = "Cannot duplicate `%s' in `%s': %s." % (src.path, self.dir.path, e.errstr)
+ raise SCons.Errors.StopError, desc
+ self.linked = 1
+ # The Link() action may or may not have actually
+ # created the file, depending on whether the -n
+ # option was used or not. Delete the _exists and
+ # _rexists attributes so they can be reevaluated.
+ self.clear()
+
+ memoizer_counters.append(SCons.Memoize.CountValue('exists'))
+
+ def exists(self):
+ try:
+ return self._memo['exists']
+ except KeyError:
+ pass
+ # Duplicate from source path if we are set up to do this.
+ if self.duplicate and not self.is_derived() and not self.linked:
+ src = self.srcnode()
+ if src is not self:
+ # At this point, src is meant to be copied in a variant directory.
+ src = src.rfile()
+ if src.abspath != self.abspath:
+ if src.exists():
+ self.do_duplicate(src)
+ # Can't return 1 here because the duplication might
+ # not actually occur if the -n option is being used.
+ else:
+ # The source file does not exist. Make sure no old
+ # copy remains in the variant directory.
+ if Base.exists(self) or self.islink():
+ self.fs.unlink(self.path)
+ # Return None explicitly because the Base.exists() call
+ # above will have cached its value if the file existed.
+ self._memo['exists'] = None
+ return None
+ result = Base.exists(self)
+ self._memo['exists'] = result
+ return result
+
+ #
+ # SIGNATURE SUBSYSTEM
+ #
+
+ def get_max_drift_csig(self):
+ """
+ Returns the content signature currently stored for this node
+ if it's been unmodified longer than the max_drift value, or the
+ max_drift value is 0. Returns None otherwise.
+ """
+ old = self.get_stored_info()
+ mtime = self.get_timestamp()
+
+ max_drift = self.fs.max_drift
+ if max_drift > 0:
+ if (time.time() - mtime) > max_drift:
+ try:
+ n = old.ninfo
+ if n.timestamp and n.csig and n.timestamp == mtime:
+ return n.csig
+ except AttributeError:
+ pass
+ elif max_drift == 0:
+ try:
+ return old.ninfo.csig
+ except AttributeError:
+ pass
+
+ return None
+
+ def get_csig(self):
+ """
+ Generate a node's content signature, the digested signature
+ of its content.
+
+ node - the node
+ cache - alternate node to use for the signature cache
+ returns - the content signature
+ """
+ ninfo = self.get_ninfo()
+ try:
+ return ninfo.csig
+ except AttributeError:
+ pass
+
+ csig = self.get_max_drift_csig()
+ if csig is None:
+
+ try:
+ if self.get_size() < SCons.Node.FS.File.md5_chunksize:
+ contents = self.get_contents()
+ else:
+ csig = self.get_content_hash()
+ except IOError:
+ # This can happen if there's actually a directory on-disk,
+ # which can be the case if they've disabled disk checks,
+ # or if an action with a File target actually happens to
+ # create a same-named directory by mistake.
+ csig = ''
+ else:
+ if not csig:
+ csig = SCons.Util.MD5signature(contents)
+
+ ninfo.csig = csig
+
+ return csig
+
+ #
+ # DECISION SUBSYSTEM
+ #
+
+ def builder_set(self, builder):
+ SCons.Node.Node.builder_set(self, builder)
+ self.changed_since_last_build = self.decide_target
+
+ def changed_content(self, target, prev_ni):
+ cur_csig = self.get_csig()
+ try:
+ return cur_csig != prev_ni.csig
+ except AttributeError:
+ return 1
+
+ def changed_state(self, target, prev_ni):
+ return self.state != SCons.Node.up_to_date
+
+ def changed_timestamp_then_content(self, target, prev_ni):
+ if not self.changed_timestamp_match(target, prev_ni):
+ try:
+ self.get_ninfo().csig = prev_ni.csig
+ except AttributeError:
+ pass
+ return False
+ return self.changed_content(target, prev_ni)
+
+ def changed_timestamp_newer(self, target, prev_ni):
+ try:
+ return self.get_timestamp() > target.get_timestamp()
+ except AttributeError:
+ return 1
+
+ def changed_timestamp_match(self, target, prev_ni):
+ try:
+ return self.get_timestamp() != prev_ni.timestamp
+ except AttributeError:
+ return 1
+
+ def decide_source(self, target, prev_ni):
+ return target.get_build_env().decide_source(self, target, prev_ni)
+
+ def decide_target(self, target, prev_ni):
+ return target.get_build_env().decide_target(self, target, prev_ni)
+
+ # Initialize this Node's decider function to decide_source() because
+ # every file is a source file until it has a Builder attached...
+ changed_since_last_build = decide_source
+
+ def is_up_to_date(self):
+ T = 0
+ if T: Trace('is_up_to_date(%s):' % self)
+ if not self.exists():
+ if T: Trace(' not self.exists():')
+ # The file doesn't exist locally...
+ r = self.rfile()
+ if r != self:
+ # ...but there is one in a Repository...
+ if not self.changed(r):
+ if T: Trace(' changed(%s):' % r)
+ # ...and it's even up-to-date...
+ if self._local:
+ # ...and they'd like a local copy.
+ e = LocalCopy(self, r, None)
+ if isinstance(e, SCons.Errors.BuildError):
+ raise
+ self.store_info()
+ if T: Trace(' 1\n')
+ return 1
+ self.changed()
+ if T: Trace(' None\n')
+ return None
+ else:
+ r = self.changed()
+ if T: Trace(' self.exists(): %s\n' % r)
+ return not r
+
+ memoizer_counters.append(SCons.Memoize.CountValue('rfile'))
+
+ def rfile(self):
+ try:
+ return self._memo['rfile']
+ except KeyError:
+ pass
+ result = self
+ if not self.exists():
+ norm_name = _my_normcase(self.name)
+ for dir in self.dir.get_all_rdirs():
+ try: node = dir.entries[norm_name]
+ except KeyError: node = dir.file_on_disk(self.name)
+ if node and node.exists() and \
+ (isinstance(node, File) or isinstance(node, Entry) \
+ or not node.is_derived()):
+ result = node
+ break
+ self._memo['rfile'] = result
+ return result
+
+ def rstr(self):
+ return str(self.rfile())
+
+ def get_cachedir_csig(self):
+ """
+ Fetch a Node's content signature for purposes of computing
+ another Node's cachesig.
+
+ This is a wrapper around the normal get_csig() method that handles
+ the somewhat obscure case of using CacheDir with the -n option.
+ Any files that don't exist would normally be "built" by fetching
+ them from the cache, but the normal get_csig() method will try
+ to open up the local file, which doesn't exist because the -n
+ option meant we didn't actually pull the file from cachedir.
+ But since the file *does* actually exist in the cachedir, we
+ can use its contents for the csig.
+ """
+ try:
+ return self.cachedir_csig
+ except AttributeError:
+ pass
+
+ cachedir, cachefile = self.get_build_env().get_CacheDir().cachepath(self)
+ if not self.exists() and cachefile and os.path.exists(cachefile):
+ self.cachedir_csig = SCons.Util.MD5filesignature(cachefile, \
+ SCons.Node.FS.File.md5_chunksize * 1024)
+ else:
+ self.cachedir_csig = self.get_csig()
+ return self.cachedir_csig
+
+ def get_cachedir_bsig(self):
+ try:
+ return self.cachesig
+ except AttributeError:
+ pass
+
+ # Add the path to the cache signature, because multiple
+ # targets built by the same action will all have the same
+ # build signature, and we have to differentiate them somehow.
+ children = self.children()
+ executor = self.get_executor()
+ # sigs = [n.get_cachedir_csig() for n in children]
+ sigs = map(lambda n: n.get_cachedir_csig(), children)
+ sigs.append(SCons.Util.MD5signature(executor.get_contents()))
+ sigs.append(self.path)
+ result = self.cachesig = SCons.Util.MD5collect(sigs)
+ return result
+
+
+default_fs = None
+
+def get_default_fs():
+ global default_fs
+ if not default_fs:
+ default_fs = FS()
+ return default_fs
+
+class FileFinder:
+ """
+ """
+ if SCons.Memoize.use_memoizer:
+ __metaclass__ = SCons.Memoize.Memoized_Metaclass
+
+ memoizer_counters = []
+
+ def __init__(self):
+ self._memo = {}
+
+ def filedir_lookup(self, p, fd=None):
+ """
+ A helper method for find_file() that looks up a directory for
+ a file we're trying to find. This only creates the Dir Node if
+ it exists on-disk, since if the directory doesn't exist we know
+ we won't find any files in it... :-)
+
+ It would be more compact to just use this as a nested function
+ with a default keyword argument (see the commented-out version
+ below), but that doesn't work unless you have nested scopes,
+ so we define it here just so this work under Python 1.5.2.
+ """
+ if fd is None:
+ fd = self.default_filedir
+ dir, name = os.path.split(fd)
+ drive, d = os.path.splitdrive(dir)
+ if d in ('/', os.sep):
+ return p.fs.get_root(drive).dir_on_disk(name)
+ if dir:
+ p = self.filedir_lookup(p, dir)
+ if not p:
+ return None
+ norm_name = _my_normcase(name)
+ try:
+ node = p.entries[norm_name]
+ except KeyError:
+ return p.dir_on_disk(name)
+ if isinstance(node, Dir):
+ return node
+ if isinstance(node, Entry):
+ node.must_be_same(Dir)
+ return node
+ return None
+
+ def _find_file_key(self, filename, paths, verbose=None):
+ return (filename, paths)
+
+ memoizer_counters.append(SCons.Memoize.CountDict('find_file', _find_file_key))
+
+ def find_file(self, filename, paths, verbose=None):
+ """
+ find_file(str, [Dir()]) -> [nodes]
+
+ filename - a filename to find
+ paths - a list of directory path *nodes* to search in. Can be
+ represented as a list, a tuple, or a callable that is
+ called with no arguments and returns the list or tuple.
+
+ returns - the node created from the found file.
+
+ Find a node corresponding to either a derived file or a file
+ that exists already.
+
+ Only the first file found is returned, and none is returned
+ if no file is found.
+ """
+ memo_key = self._find_file_key(filename, paths)
+ try:
+ memo_dict = self._memo['find_file']
+ except KeyError:
+ memo_dict = {}
+ self._memo['find_file'] = memo_dict
+ else:
+ try:
+ return memo_dict[memo_key]
+ except KeyError:
+ pass
+
+ if verbose and not callable(verbose):
+ if not SCons.Util.is_String(verbose):
+ verbose = "find_file"
+ verbose = ' %s: ' % verbose
+ verbose = lambda s, v=verbose: sys.stdout.write(v + s)
+
+ filedir, filename = os.path.split(filename)
+ if filedir:
+ # More compact code that we can't use until we drop
+ # support for Python 1.5.2:
+ #
+ #def filedir_lookup(p, fd=filedir):
+ # """
+ # A helper function that looks up a directory for a file
+ # we're trying to find. This only creates the Dir Node
+ # if it exists on-disk, since if the directory doesn't
+ # exist we know we won't find any files in it... :-)
+ # """
+ # dir, name = os.path.split(fd)
+ # if dir:
+ # p = filedir_lookup(p, dir)
+ # if not p:
+ # return None
+ # norm_name = _my_normcase(name)
+ # try:
+ # node = p.entries[norm_name]
+ # except KeyError:
+ # return p.dir_on_disk(name)
+ # if isinstance(node, Dir):
+ # return node
+ # if isinstance(node, Entry):
+ # node.must_be_same(Dir)
+ # return node
+ # if isinstance(node, Dir) or isinstance(node, Entry):
+ # return node
+ # return None
+ #paths = filter(None, map(filedir_lookup, paths))
+
+ self.default_filedir = filedir
+ paths = filter(None, map(self.filedir_lookup, paths))
+
+ result = None
+ for dir in paths:
+ if verbose:
+ verbose("looking for '%s' in '%s' ...\n" % (filename, dir))
+ node, d = dir.srcdir_find_file(filename)
+ if node:
+ if verbose:
+ verbose("... FOUND '%s' in '%s'\n" % (filename, d))
+ result = node
+ break
+
+ memo_dict[memo_key] = result
+
+ return result
+
+find_file = FileFinder().find_file
+
+
+def invalidate_node_memos(targets):
+ """
+ Invalidate the memoized values of all Nodes (files or directories)
+ that are associated with the given entries. Has been added to
+ clear the cache of nodes affected by a direct execution of an
+ action (e.g. Delete/Copy/Chmod). Existing Node caches become
+ inconsistent if the action is run through Execute(). The argument
+ `targets` can be a single Node object or filename, or a sequence
+ of Nodes/filenames.
+ """
+ from traceback import extract_stack
+
+ # First check if the cache really needs to be flushed. Only
+ # actions run in the SConscript with Execute() seem to be
+ # affected. XXX The way to check if Execute() is in the stacktrace
+ # is a very dirty hack and should be replaced by a more sensible
+ # solution.
+ for f in extract_stack():
+ if f[2] == 'Execute' and f[0][-14:] == 'Environment.py':
+ break
+ else:
+ # Dont have to invalidate, so return
+ return
+
+ if not SCons.Util.is_List(targets):
+ targets = [targets]
+
+ for entry in targets:
+ # If the target is a Node object, clear the cache. If it is a
+ # filename, look up potentially existing Node object first.
+ try:
+ entry.clear_memoized_values()
+ except AttributeError:
+ # Not a Node object, try to look up Node by filename. XXX
+ # This creates Node objects even for those filenames which
+ # do not correspond to an existing Node object.
+ node = get_default_fs().Entry(entry)
+ if node:
+ node.clear_memoized_values()
+
projects / senf.git / blobdiff