3428 lines
119 KiB
Python
3428 lines
119 KiB
Python
"""scons.Node.FS
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File system nodes.
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These Nodes represent the canonical external objects that people think
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of when they think of building software: files and directories.
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This holds a "default_fs" variable that should be initialized with an FS
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that can be used by scripts or modules looking for the canonical default.
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"""
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#
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# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 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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__revision__ = "src/engine/SCons/Node/FS.py 2014/03/02 14:18:15 garyo"
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import fnmatch
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import os
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import re
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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 codecs
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import SCons.Action
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import SCons.Debug
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from SCons.Debug import logInstanceCreation
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import SCons.Errors
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import SCons.Memoize
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import SCons.Node
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import SCons.Node.Alias
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import SCons.Subst
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import SCons.Util
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import SCons.Warnings
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from SCons.Debug import Trace
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do_store_info = True
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print_duplicate = 0
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class EntryProxyAttributeError(AttributeError):
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"""
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An AttributeError subclass for recording and displaying the name
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of the underlying Entry involved in an AttributeError exception.
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"""
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def __init__(self, entry_proxy, attribute):
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AttributeError.__init__(self)
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self.entry_proxy = entry_proxy
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self.attribute = attribute
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def __str__(self):
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entry = self.entry_proxy.get()
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fmt = "%s instance %s has no attribute %s"
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return fmt % (entry.__class__.__name__,
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repr(entry.name),
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repr(self.attribute))
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# The max_drift value: by default, use a cached signature value for
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# any file that's been untouched for more than two days.
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default_max_drift = 2*24*60*60
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#
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# We stringify these file system Nodes a lot. Turning a file system Node
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# into a string is non-trivial, because the final string representation
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# can depend on a lot of factors: whether it's a derived target or not,
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# whether it's linked to a repository or source directory, and whether
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# there's duplication going on. The normal technique for optimizing
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# calculations like this is to memoize (cache) the string value, so you
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# only have to do the calculation once.
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#
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# A number of the above factors, however, can be set after we've already
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# been asked to return a string for a Node, because a Repository() or
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# VariantDir() call or the like may not occur until later in SConscript
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# files. So this variable controls whether we bother trying to save
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# string values for Nodes. The wrapper interface can set this whenever
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# they're done mucking with Repository and VariantDir and the other stuff,
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# to let this module know it can start returning saved string values
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# for Nodes.
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#
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Save_Strings = None
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def save_strings(val):
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global Save_Strings
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Save_Strings = val
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#
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# Avoid unnecessary function calls by recording a Boolean value that
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# tells us whether or not os.path.splitdrive() actually does anything
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# on this system, and therefore whether we need to bother calling it
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# when looking up path names in various methods below.
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#
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do_splitdrive = None
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_my_splitdrive =None
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def initialize_do_splitdrive():
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global do_splitdrive
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global has_unc
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drive, path = os.path.splitdrive('X:/foo')
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has_unc = hasattr(os.path, 'splitunc')
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do_splitdrive = not not drive or has_unc
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global _my_splitdrive
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if has_unc:
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def splitdrive(p):
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if p[1:2] == ':':
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return p[:2], p[2:]
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if p[0:2] == '//':
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# Note that we leave a leading slash in the path
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# because UNC paths are always absolute.
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return '//', p[1:]
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return '', p
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else:
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def splitdrive(p):
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if p[1:2] == ':':
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return p[:2], p[2:]
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return '', p
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_my_splitdrive = splitdrive
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# Keep some commonly used values in global variables to skip to
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# module look-up costs.
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global OS_SEP
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global UNC_PREFIX
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global os_sep_is_slash
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OS_SEP = os.sep
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UNC_PREFIX = OS_SEP + OS_SEP
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os_sep_is_slash = OS_SEP == '/'
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initialize_do_splitdrive()
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# Used to avoid invoking os.path.normpath if not necessary.
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needs_normpath_check = re.compile(
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r'''
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# We need to renormalize the path if it contains any consecutive
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# '/' characters.
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.*// |
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# We need to renormalize the path if it contains a '..' directory.
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# Note that we check for all the following cases:
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#
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# a) The path is a single '..'
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# b) The path starts with '..'. E.g. '../' or '../moredirs'
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# but we not match '..abc/'.
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# c) The path ends with '..'. E.g. '/..' or 'dirs/..'
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# d) The path contains a '..' in the middle.
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# E.g. dirs/../moredirs
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(.*/)?\.\.(?:/|$) |
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# We need to renormalize the path if it contains a '.'
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# directory, but NOT if it is a single '.' '/' characters. We
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# do not want to match a single '.' because this case is checked
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# for explicitely since this is common enough case.
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#
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# Note that we check for all the following cases:
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#
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# a) We don't match a single '.'
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# b) We match if the path starts with '.'. E.g. './' or
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# './moredirs' but we not match '.abc/'.
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# c) We match if the path ends with '.'. E.g. '/.' or
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# 'dirs/.'
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# d) We match if the path contains a '.' in the middle.
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# E.g. dirs/./moredirs
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\./|.*/\.(?:/|$)
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''',
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re.VERBOSE
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)
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needs_normpath_match = needs_normpath_check.match
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#
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# SCons.Action objects for interacting with the outside world.
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#
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# The Node.FS methods in this module should use these actions to
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# create and/or remove files and directories; they should *not* use
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# os.{link,symlink,unlink,mkdir}(), etc., directly.
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#
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# Using these SCons.Action objects ensures that descriptions of these
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# external activities are properly displayed, that the displays are
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# suppressed when the -s (silent) option is used, and (most importantly)
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# the actions are disabled when the the -n option is used, in which case
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# there should be *no* changes to the external file system(s)...
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#
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if hasattr(os, 'link'):
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def _hardlink_func(fs, src, dst):
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# If the source is a symlink, we can't just hard-link to it
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# because a relative symlink may point somewhere completely
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# different. We must disambiguate the symlink and then
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# hard-link the final destination file.
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while fs.islink(src):
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link = fs.readlink(src)
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if not os.path.isabs(link):
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src = link
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else:
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src = os.path.join(os.path.dirname(src), link)
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fs.link(src, dst)
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else:
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_hardlink_func = None
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if hasattr(os, 'symlink'):
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def _softlink_func(fs, src, dst):
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fs.symlink(src, dst)
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else:
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_softlink_func = None
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def _copy_func(fs, src, dest):
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shutil.copy2(src, dest)
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st = fs.stat(src)
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fs.chmod(dest, stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
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Valid_Duplicates = ['hard-soft-copy', 'soft-hard-copy',
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'hard-copy', 'soft-copy', 'copy']
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Link_Funcs = [] # contains the callables of the specified duplication style
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def set_duplicate(duplicate):
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# Fill in the Link_Funcs list according to the argument
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# (discarding those not available on the platform).
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# Set up the dictionary that maps the argument names to the
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# underlying implementations. We do this inside this function,
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# not in the top-level module code, so that we can remap os.link
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# and os.symlink for testing purposes.
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link_dict = {
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'hard' : _hardlink_func,
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'soft' : _softlink_func,
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'copy' : _copy_func
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}
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if not duplicate in Valid_Duplicates:
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raise SCons.Errors.InternalError("The argument of set_duplicate "
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"should be in Valid_Duplicates")
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global Link_Funcs
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Link_Funcs = []
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for func in duplicate.split('-'):
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if link_dict[func]:
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Link_Funcs.append(link_dict[func])
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def LinkFunc(target, source, env):
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# Relative paths cause problems with symbolic links, so
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# we use absolute paths, which may be a problem for people
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# who want to move their soft-linked src-trees around. Those
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# people should use the 'hard-copy' mode, softlinks cannot be
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# used for that; at least I have no idea how ...
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src = source[0].abspath
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dest = target[0].abspath
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dir, file = os.path.split(dest)
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if dir and not target[0].fs.isdir(dir):
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os.makedirs(dir)
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if not Link_Funcs:
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# Set a default order of link functions.
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set_duplicate('hard-soft-copy')
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fs = source[0].fs
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# Now link the files with the previously specified order.
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for func in Link_Funcs:
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try:
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func(fs, src, dest)
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break
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except (IOError, OSError):
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# An OSError indicates something happened like a permissions
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# problem or an attempt to symlink across file-system
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# boundaries. An IOError indicates something like the file
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# not existing. In either case, keeping trying additional
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# functions in the list and only raise an error if the last
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# one failed.
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if func == Link_Funcs[-1]:
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# exception of the last link method (copy) are fatal
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raise
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return 0
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Link = SCons.Action.Action(LinkFunc, None)
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def LocalString(target, source, env):
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return 'Local copy of %s from %s' % (target[0], source[0])
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LocalCopy = SCons.Action.Action(LinkFunc, LocalString)
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def UnlinkFunc(target, source, env):
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t = target[0]
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t.fs.unlink(t.abspath)
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return 0
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Unlink = SCons.Action.Action(UnlinkFunc, None)
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def MkdirFunc(target, source, env):
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t = target[0]
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if not t.exists():
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t.fs.mkdir(t.abspath)
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return 0
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Mkdir = SCons.Action.Action(MkdirFunc, None, presub=None)
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MkdirBuilder = None
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def get_MkdirBuilder():
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global MkdirBuilder
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if MkdirBuilder is None:
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import SCons.Builder
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import SCons.Defaults
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# "env" will get filled in by Executor.get_build_env()
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# calling SCons.Defaults.DefaultEnvironment() when necessary.
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MkdirBuilder = SCons.Builder.Builder(action = Mkdir,
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env = None,
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explain = None,
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is_explicit = None,
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target_scanner = SCons.Defaults.DirEntryScanner,
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name = "MkdirBuilder")
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return MkdirBuilder
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class _Null(object):
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pass
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_null = _Null()
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DefaultSCCSBuilder = None
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DefaultRCSBuilder = None
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def get_DefaultSCCSBuilder():
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global DefaultSCCSBuilder
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if DefaultSCCSBuilder is None:
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import SCons.Builder
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# "env" will get filled in by Executor.get_build_env()
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# calling SCons.Defaults.DefaultEnvironment() when necessary.
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act = SCons.Action.Action('$SCCSCOM', '$SCCSCOMSTR')
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DefaultSCCSBuilder = SCons.Builder.Builder(action = act,
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env = None,
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name = "DefaultSCCSBuilder")
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return DefaultSCCSBuilder
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|
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def get_DefaultRCSBuilder():
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global DefaultRCSBuilder
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if DefaultRCSBuilder is None:
|
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import SCons.Builder
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# "env" will get filled in by Executor.get_build_env()
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# calling SCons.Defaults.DefaultEnvironment() when necessary.
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act = SCons.Action.Action('$RCS_COCOM', '$RCS_COCOMSTR')
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DefaultRCSBuilder = SCons.Builder.Builder(action = act,
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env = None,
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name = "DefaultRCSBuilder")
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return DefaultRCSBuilder
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|
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# Cygwin's os.path.normcase pretends it's on a case-sensitive filesystem.
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_is_cygwin = sys.platform == "cygwin"
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if os.path.normcase("TeSt") == os.path.normpath("TeSt") and not _is_cygwin:
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def _my_normcase(x):
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return x
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else:
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def _my_normcase(x):
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return x.upper()
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|
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class DiskChecker(object):
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def __init__(self, type, do, ignore):
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self.type = type
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self.do = do
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self.ignore = ignore
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self.func = do
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def __call__(self, *args, **kw):
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return self.func(*args, **kw)
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def set(self, list):
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if self.type in list:
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self.func = self.do
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else:
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self.func = self.ignore
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|
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def do_diskcheck_match(node, predicate, errorfmt):
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result = predicate()
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try:
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# If calling the predicate() cached a None value from stat(),
|
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# remove it so it doesn't interfere with later attempts to
|
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# build this Node as we walk the DAG. (This isn't a great way
|
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# to do this, we're reaching into an interface that doesn't
|
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# really belong to us, but it's all about performance, so
|
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# for now we'll just document the dependency...)
|
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if node._memo['stat'] is None:
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del node._memo['stat']
|
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except (AttributeError, KeyError):
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pass
|
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if result:
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raise TypeError(errorfmt % node.abspath)
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|
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def ignore_diskcheck_match(node, predicate, errorfmt):
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pass
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|
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def do_diskcheck_rcs(node, name):
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try:
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rcs_dir = node.rcs_dir
|
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except AttributeError:
|
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if node.entry_exists_on_disk('RCS'):
|
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rcs_dir = node.Dir('RCS')
|
|
else:
|
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rcs_dir = None
|
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node.rcs_dir = rcs_dir
|
|
if rcs_dir:
|
|
return rcs_dir.entry_exists_on_disk(name+',v')
|
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return None
|
|
|
|
def ignore_diskcheck_rcs(node, name):
|
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return None
|
|
|
|
def do_diskcheck_sccs(node, name):
|
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try:
|
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sccs_dir = node.sccs_dir
|
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except AttributeError:
|
|
if node.entry_exists_on_disk('SCCS'):
|
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sccs_dir = node.Dir('SCCS')
|
|
else:
|
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sccs_dir = None
|
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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):
|
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return None
|
|
|
|
diskcheck_match = DiskChecker('match', do_diskcheck_match, ignore_diskcheck_match)
|
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diskcheck_rcs = DiskChecker('rcs', do_diskcheck_rcs, ignore_diskcheck_rcs)
|
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diskcheck_sccs = DiskChecker('sccs', do_diskcheck_sccs, ignore_diskcheck_sccs)
|
|
|
|
diskcheckers = [
|
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diskcheck_match,
|
|
diskcheck_rcs,
|
|
diskcheck_sccs,
|
|
]
|
|
|
|
def set_diskcheck(list):
|
|
for dc in diskcheckers:
|
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dc.set(list)
|
|
|
|
def diskcheck_types():
|
|
return [dc.type for dc in diskcheckers]
|
|
|
|
|
|
|
|
class EntryProxy(SCons.Util.Proxy):
|
|
|
|
__str__ = SCons.Util.Delegate('__str__')
|
|
|
|
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],
|
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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_is_slash:
|
|
return self
|
|
else:
|
|
entry = self.get()
|
|
r = entry.get_path().replace(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 = entry.get_path().replace(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 SCons.Debug.track_instances: logInstanceCreation(self, 'Node.FS.Base')
|
|
SCons.Node.Node.__init__(self)
|
|
|
|
# Filenames and paths are probably reused and are intern'ed to
|
|
# save some memory.
|
|
|
|
#: Filename with extension as it was specified when the object was
|
|
#: created; to obtain filesystem path, use Python str() function
|
|
self.name = SCons.Util.silent_intern(name)
|
|
#: Cached filename extension
|
|
self.suffix = SCons.Util.silent_intern(SCons.Util.splitext(name)[1])
|
|
self.fs = fs #: Reference to parent Node.FS object
|
|
|
|
assert directory, "A directory must be provided"
|
|
|
|
self.abspath = SCons.Util.silent_intern(directory.entry_abspath(name))
|
|
self.labspath = SCons.Util.silent_intern(directory.entry_labspath(name))
|
|
if directory.path == '.':
|
|
self.path = SCons.Util.silent_intern(name)
|
|
else:
|
|
self.path = SCons.Util.silent_intern(directory.entry_path(name))
|
|
if directory.tpath == '.':
|
|
self.tpath = SCons.Util.silent_intern(name)
|
|
else:
|
|
self.tpath = SCons.Util.silent_intern(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 isinstance(self, 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 = sys.intern(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
|
|
# 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
|
|
pathname = ''
|
|
try: i = path_elems.index(dir)
|
|
except ValueError:
|
|
for p in path_elems[:-1]:
|
|
pathname += p.dirname
|
|
else:
|
|
for p in path_elems[i+1:-1]:
|
|
pathname += p.dirname
|
|
return pathname + path_elems[-1].name
|
|
|
|
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. Returns the exact binary
|
|
contents of the file."""
|
|
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 get_text_contents(self):
|
|
"""Fetch the decoded text contents of a Unicode encoded Entry.
|
|
|
|
Since this should return the text 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_text_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_text_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 Exception("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)
|
|
|
|
def get_subst_proxy(self):
|
|
return self.disambiguate().get_subst_proxy()
|
|
|
|
# This is for later so we can differentiate between Entry the class and Entry
|
|
# the method of the FS class.
|
|
_classEntry = Entry
|
|
|
|
|
|
class LocalFS(object):
|
|
|
|
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 SCons.Debug.track_instances: 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(_my_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):
|
|
if hasattr(self, "_cwd"):
|
|
return self._cwd
|
|
else:
|
|
return "<no 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)
|
|
|
|
if not os_sep_is_slash:
|
|
p = p.replace(OS_SEP, '/')
|
|
|
|
if p[0:1] == '#':
|
|
# 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
|
|
|
|
# There might be a drive letter following the
|
|
# '#'. Although it is not described in the SCons man page,
|
|
# the regression test suite explicitly tests for that
|
|
# syntax. It seems to mean the following thing:
|
|
#
|
|
# Assuming the the SCons top dir is in C:/xxx/yyy,
|
|
# '#X:/toto' means X:/xxx/yyy/toto.
|
|
#
|
|
# i.e. it assumes that the X: drive has a directory
|
|
# structure similar to the one found on drive C:.
|
|
if do_splitdrive:
|
|
drive, p = _my_splitdrive(p)
|
|
if drive:
|
|
root = self.get_root(drive)
|
|
else:
|
|
root = directory.root
|
|
else:
|
|
root = directory.root
|
|
|
|
# We can only strip trailing after splitting the drive
|
|
# since the drive might the UNC '//' prefix.
|
|
p = p.strip('/')
|
|
|
|
needs_normpath = needs_normpath_match(p)
|
|
|
|
# The path is relative to the top-level SCons directory.
|
|
if p in ('', '.'):
|
|
p = directory.labspath
|
|
else:
|
|
p = directory.labspath + '/' + p
|
|
else:
|
|
if do_splitdrive:
|
|
drive, p = _my_splitdrive(p)
|
|
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 = '/'
|
|
else:
|
|
drive = ''
|
|
|
|
# We can only strip trailing '/' since the drive might the
|
|
# UNC '//' prefix.
|
|
if p != '/':
|
|
p = p.rstrip('/')
|
|
|
|
needs_normpath = needs_normpath_match(p)
|
|
|
|
if p[0:1] == '/':
|
|
# Absolute path
|
|
root = self.get_root(drive)
|
|
else:
|
|
# This is a relative lookup 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 directory:
|
|
if not isinstance(directory, Dir):
|
|
directory = self.Dir(directory)
|
|
else:
|
|
directory = self._cwd
|
|
|
|
if p in ('', '.'):
|
|
p = directory.labspath
|
|
else:
|
|
p = directory.labspath + '/' + p
|
|
|
|
if drive:
|
|
root = self.get_root(drive)
|
|
else:
|
|
root = directory.root
|
|
|
|
if needs_normpath is not None:
|
|
# Normalize a pathname. Will return the same result for
|
|
# equivalent paths.
|
|
#
|
|
# We take advantage of the fact that we have an absolute
|
|
# path here for sure. In addition, we know that the
|
|
# components of lookup path are separated by slashes at
|
|
# this point. Because of this, this code is about 2X
|
|
# faster than calling os.path.normpath() followed by
|
|
# replacing os.sep with '/' again.
|
|
ins = p.split('/')[1:]
|
|
outs = []
|
|
for d in ins:
|
|
if d == '..':
|
|
try:
|
|
outs.pop()
|
|
except IndexError:
|
|
pass
|
|
elif d not in ('', '.'):
|
|
outs.append(d)
|
|
p = '/' + '/'.join(outs)
|
|
|
|
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 = os.path.join(bd.path, *tail)
|
|
targets.append(self.Entry(p))
|
|
tail = [dir.name] + tail
|
|
dir = dir.up()
|
|
if targets:
|
|
message = fmt % ' '.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 = _my_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 SCons.Debug.track_instances: 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
|
|
|
|
# For directories, we make a difference between the directory
|
|
# 'name' and the directory 'dirname'. The 'name' attribute is
|
|
# used when we need to print the 'name' of the directory or
|
|
# when we it is used as the last part of a path. The 'dirname'
|
|
# is used when the directory is not the last element of the
|
|
# path. The main reason for making that distinction is that
|
|
# for RoorDir's the dirname can not be easily inferred from
|
|
# the name. For example, we have to add a '/' after a drive
|
|
# letter but not after a UNC path prefix ('//').
|
|
self.dirname = self.name + OS_SEP
|
|
|
|
# Don't just reset the executor, replace its action list,
|
|
# because it might have some pre-or post-actions that need to
|
|
# be preserved.
|
|
#
|
|
# But don't reset the executor if there is a non-null executor
|
|
# attached already. The existing executor might have other
|
|
# targets, in which case replacing the action list with a
|
|
# Mkdir action is a big mistake.
|
|
if not hasattr(self, 'executor'):
|
|
self.builder = get_MkdirBuilder()
|
|
self.get_executor().set_action_list(self.builder.action)
|
|
else:
|
|
# Prepend MkdirBuilder action to existing action list
|
|
l = self.get_executor().action_list
|
|
a = get_MkdirBuilder().action
|
|
l.insert(0, a)
|
|
self.get_executor().set_action_list(l)
|
|
|
|
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 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.dir
|
|
|
|
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) \
|
|
+ [n.name for n in other.path_elements[i:]]
|
|
|
|
result = OS_SEP.join(path_elems)
|
|
|
|
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:
|
|
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)
|
|
p = parent.up()
|
|
if p is None:
|
|
# Don't use while: - else: for this condition because
|
|
# if so, then parent is None and has no .path attribute.
|
|
raise SCons.Errors.StopError(parent.path)
|
|
parent = p
|
|
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_text_contents(self):
|
|
"""We already emit things in text, so just return the binary
|
|
version."""
|
|
return self.get_contents()
|
|
|
|
def get_contents(self):
|
|
"""Return content signatures and names of all our children
|
|
separated by new-lines. Ensure that the nodes are sorted."""
|
|
contents = []
|
|
for node in sorted(self.children(), key=lambda t: t.name):
|
|
contents.append('%s %s\n' % (node.get_csig(), node.name))
|
|
return ''.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] = True
|
|
self.on_disk_entries = d
|
|
if sys.platform == 'win32' or sys.platform == 'cygwin':
|
|
name = _my_normcase(name)
|
|
result = d.get(name)
|
|
if result is None:
|
|
# Belt-and-suspenders for Windows: check directly for
|
|
# 8.3 file names that don't show up in os.listdir().
|
|
result = os.path.exists(self.abspath + OS_SEP + name)
|
|
d[name] = result
|
|
return result
|
|
else:
|
|
return name in d
|
|
|
|
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 = list(entries.keys())
|
|
names.remove('.')
|
|
names.remove('..')
|
|
func(arg, self, names)
|
|
for dirname in [n for n in names if isinstance(entries[n], Dir)]:
|
|
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 sorted(self._glob1(basename, ondisk, source, strings),
|
|
key=lambda t: str(t))
|
|
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 = [os.path.join(str(dir), x) for x in r]
|
|
result.extend(r)
|
|
return sorted(result, key=lambda a: str(a))
|
|
|
|
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 ('.', '..') ]
|
|
names.extend(node_names)
|
|
if not strings:
|
|
# Make sure the working directory (self) actually has
|
|
# entries for all Nodes in repositories or variant dirs.
|
|
for name in node_names: selfEntry(name)
|
|
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 = [x for x in disk_names if x[0] != '.']
|
|
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 = [x for x in names if x[0] != '.']
|
|
names = fnmatch.filter(names, pattern)
|
|
|
|
if strings:
|
|
return names
|
|
|
|
#return [ self.entries[_my_normcase(n)] for n in names ]
|
|
return [self.entries[_my_normcase(n)] for n in 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, drive, fs):
|
|
if SCons.Debug.track_instances: 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
|
|
|
|
# Handle all the types of drives:
|
|
if drive == '':
|
|
# No drive, regular UNIX root or Windows default drive.
|
|
name = OS_SEP
|
|
dirname = OS_SEP
|
|
elif drive == '//':
|
|
# UNC path
|
|
name = UNC_PREFIX
|
|
dirname = UNC_PREFIX
|
|
else:
|
|
# Windows drive letter
|
|
name = drive
|
|
dirname = drive + OS_SEP
|
|
|
|
Base.__init__(self, name, self, fs)
|
|
|
|
# Now set our paths to what we really want them to be. The
|
|
# name should already contain any necessary separators, such
|
|
# as the initial drive letter (the name) plus the directory
|
|
# separator, except for the "lookup abspath," which does not
|
|
# have the drive letter.
|
|
self.abspath = dirname
|
|
self.labspath = ''
|
|
self.path = dirname
|
|
self.tpath = dirname
|
|
self._morph()
|
|
|
|
# Must be reset after Dir._morph() is invoked...
|
|
self.dirname = dirname
|
|
|
|
self._lookupDict = {}
|
|
|
|
self._lookupDict[''] = self
|
|
self._lookupDict['/'] = self
|
|
|
|
# The // entry is necessary because os.path.normpath()
|
|
# preserves double slashes at the beginning of a path on Posix
|
|
# platforms.
|
|
if not has_unc:
|
|
self._lookupDict['//'] = 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 a 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:
|
|
msg = "No such file or directory: '%s' in '%s' (and create is False)" % (p, str(self))
|
|
raise SCons.Errors.UserError(msg)
|
|
# There is no Node for this path name, and we're allowed
|
|
# to create it.
|
|
# (note: would like to use p.rsplit('/',1) here but
|
|
# that's not in python 2.3)
|
|
# e.g.: dir_name, file_name = p.rsplit('/',1)
|
|
last_slash = p.rindex('/')
|
|
if (last_slash >= 0):
|
|
dir_name = p[:last_slash]
|
|
file_name = p[last_slash+1:]
|
|
else:
|
|
dir_name = p # shouldn't happen, just in case
|
|
file_name = ''
|
|
|
|
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 = _my_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_is_slash:
|
|
node_to_str = str
|
|
else:
|
|
def node_to_str(n):
|
|
try:
|
|
s = n.path
|
|
except AttributeError:
|
|
s = str(n)
|
|
else:
|
|
s = s.replace(OS_SEP, '/')
|
|
return s
|
|
for attr in ['bsources', 'bdepends', 'bimplicit']:
|
|
try:
|
|
val = getattr(self, attr)
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
setattr(self, attr, list(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 zip(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 zip(bkids, bkidsigs):
|
|
result.append(str(bkid) + ': ' +
|
|
' '.join(bkidsig.format(names=names)))
|
|
result.append('%s [%s]' % (self.bactsig, self.bact))
|
|
return '\n'.join(result)
|
|
|
|
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 SCons.Debug.track_instances: 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."""
|
|
return [self.Dir(p) for p in 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 not hasattr(self, 'released_target_info'):
|
|
self.released_target_info = False
|
|
|
|
# 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:
|
|
contents = open(fname, "rb").read()
|
|
except EnvironmentError, e:
|
|
if not e.filename:
|
|
e.filename = fname
|
|
raise
|
|
return contents
|
|
|
|
# This attempts to figure out what the encoding of the text is
|
|
# based upon the BOM bytes, and then decodes the contents so that
|
|
# it's a valid python string.
|
|
def get_text_contents(self):
|
|
contents = self.get_contents()
|
|
# The behavior of various decode() methods and functions
|
|
# w.r.t. the initial BOM bytes is different for different
|
|
# encodings and/or Python versions. ('utf-8' does not strip
|
|
# them, but has a 'utf-8-sig' which does; 'utf-16' seems to
|
|
# strip them; etc.) Just sidestep all the complication by
|
|
# explicitly stripping the BOM before we decode().
|
|
if contents.startswith(codecs.BOM_UTF8):
|
|
return contents[len(codecs.BOM_UTF8):].decode('utf-8')
|
|
if contents.startswith(codecs.BOM_UTF16_LE):
|
|
return contents[len(codecs.BOM_UTF16_LE):].decode('utf-16-le')
|
|
if contents.startswith(codecs.BOM_UTF16_BE):
|
|
return contents[len(codecs.BOM_UTF16_BE):].decode('utf-16-be')
|
|
return contents
|
|
|
|
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 = [N.disambiguate() for N in 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 push_to_cache(self):
|
|
"""Try to push the node into a cache
|
|
"""
|
|
# This should get called before the Nodes' .built() method is
|
|
# called, which would clear the build signature if the file has
|
|
# a source scanner.
|
|
#
|
|
# We have to clear the local memoized values *before* we push
|
|
# the node to cache so that the memoization of the self.exists()
|
|
# return value doesn't interfere.
|
|
if self.nocache:
|
|
return
|
|
self.clear_memoized_values()
|
|
if self.exists():
|
|
self.get_build_env().get_CacheDir().push(self)
|
|
|
|
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 if 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 visited(self):
|
|
if self.exists() and self.executor is not None:
|
|
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 release_target_info(self):
|
|
"""Called just after this node has been marked
|
|
up-to-date or was built completely.
|
|
|
|
This is where we try to release as many target node infos
|
|
as possible for clean builds and update runs, in order
|
|
to minimize the overall memory consumption.
|
|
|
|
We'd like to remove a lot more attributes like self.sources
|
|
and self.sources_set, but they might get used
|
|
in a next build step. For example, during configuration
|
|
the source files for a built *.o file are used to figure out
|
|
which linker to use for the resulting Program (gcc vs. g++)!
|
|
That's why we check for the 'keep_targetinfo' attribute,
|
|
config Nodes and the Interactive mode just don't allow
|
|
an early release of most variables.
|
|
|
|
In the same manner, we can't simply remove the self.attributes
|
|
here. The smart linking relies on the shared flag, and some
|
|
parts of the java Tool use it to transport information
|
|
about nodes...
|
|
|
|
@see: built() and Node.release_target_info()
|
|
"""
|
|
if (self.released_target_info or SCons.Node.interactive):
|
|
return
|
|
|
|
if not hasattr(self.attributes, 'keep_targetinfo'):
|
|
# Cache some required values, before releasing
|
|
# stuff like env, executor and builder...
|
|
self.changed(allowcache=True)
|
|
self.get_contents_sig()
|
|
self.get_build_env()
|
|
# Now purge unneeded stuff to free memory...
|
|
self.executor = None
|
|
self._memo.pop('rfile', None)
|
|
self.prerequisites = None
|
|
# Cleanup lists, but only if they're empty
|
|
if not len(self.ignore_set):
|
|
self.ignore_set = None
|
|
if not len(self.implicit_set):
|
|
self.implicit_set = None
|
|
if not len(self.depends_set):
|
|
self.depends_set = None
|
|
if not len(self.ignore):
|
|
self.ignore = None
|
|
if not len(self.depends):
|
|
self.depends = None
|
|
# Mark this node as done, we only have to release
|
|
# the memory once...
|
|
self.released_target_info = True
|
|
|
|
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()
|
|
if print_duplicate:
|
|
print "dup: removing existing target %s"%self
|
|
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()
|
|
if print_duplicate:
|
|
print "dup: relinking variant '%s' from '%s'"%(self, src)
|
|
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 print_duplicate:
|
|
print "dup: no src for %s, unlinking old variant copy"%self
|
|
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 built(self):
|
|
"""Called just after this File node is successfully built.
|
|
|
|
Just like for 'release_target_info' we try to release
|
|
some more target node attributes in order to minimize the
|
|
overall memory consumption.
|
|
|
|
@see: release_target_info
|
|
"""
|
|
|
|
SCons.Node.Node.built(self)
|
|
|
|
if (not SCons.Node.interactive and
|
|
not hasattr(self.attributes, 'keep_targetinfo')):
|
|
# Ensure that the build infos get computed and cached...
|
|
self.store_info()
|
|
# ... then release some more variables.
|
|
self._specific_sources = False
|
|
self.labspath = None
|
|
self._save_str()
|
|
self.cwd = None
|
|
|
|
self.scanner_paths = None
|
|
|
|
def changed(self, node=None, allowcache=False):
|
|
"""
|
|
Returns if the node is up-to-date with respect to the BuildInfo
|
|
stored last time it was built.
|
|
|
|
For File nodes this is basically a wrapper around Node.changed(),
|
|
but we allow the return value to get cached after the reference
|
|
to the Executor got released in release_target_info().
|
|
|
|
@see: Node.changed()
|
|
"""
|
|
if node is None:
|
|
try:
|
|
return self._memo['changed']
|
|
except KeyError:
|
|
pass
|
|
|
|
has_changed = SCons.Node.Node.changed(self, node)
|
|
if allowcache:
|
|
self._memo['changed'] = has_changed
|
|
return has_changed
|
|
|
|
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
|
|
# Copy over our local attributes to the repository
|
|
# Node so we identify shared object files in the
|
|
# repository and don't assume they're static.
|
|
#
|
|
# This isn't perfect; the attribute would ideally
|
|
# be attached to the object in the repository in
|
|
# case it was built statically in the repository
|
|
# and we changed it to shared locally, but that's
|
|
# rarely the case and would only occur if you
|
|
# intentionally used the same suffix for both
|
|
# shared and static objects anyway. So this
|
|
# should work well in practice.
|
|
result.attributes = self.attributes
|
|
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_contents_sig(self):
|
|
"""
|
|
A helper method for get_cachedir_bsig.
|
|
|
|
It computes and returns the signature for this
|
|
node's contents.
|
|
"""
|
|
|
|
try:
|
|
return self.contentsig
|
|
except AttributeError:
|
|
pass
|
|
|
|
executor = self.get_executor()
|
|
|
|
result = self.contentsig = SCons.Util.MD5signature(executor.get_contents())
|
|
return result
|
|
|
|
def get_cachedir_bsig(self):
|
|
"""
|
|
Return the signature for a cached file, including
|
|
its children.
|
|
|
|
It adds the path of the cached file 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.
|
|
"""
|
|
try:
|
|
return self.cachesig
|
|
except AttributeError:
|
|
pass
|
|
|
|
# Collect signatures for all children
|
|
children = self.children()
|
|
sigs = [n.get_cachedir_csig() for n in children]
|
|
# Append this node's signature...
|
|
sigs.append(self.get_contents_sig())
|
|
# ...and it's path
|
|
sigs.append(self.path)
|
|
# Merge this all into a single signature
|
|
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(object):
|
|
"""
|
|
"""
|
|
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 = _my_splitdrive(dir)
|
|
if not name and d[:1] in ('/', OS_SEP):
|
|
#return p.fs.get_root(drive).dir_on_disk(name)
|
|
return p.fs.get_root(drive)
|
|
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 = u' %s: ' % verbose
|
|
verbose = lambda s: sys.stdout.write(_verbose + 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 = [_f for _f in map(filedir_lookup, paths) if _f]
|
|
|
|
self.default_filedir = filedir
|
|
paths = [_f for _f in map(self.filedir_lookup, paths) if _f]
|
|
|
|
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()
|
|
|
|
# Local Variables:
|
|
# tab-width:4
|
|
# indent-tabs-mode:nil
|
|
# End:
|
|
# vim: set expandtab tabstop=4 shiftwidth=4:
|