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#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import SCons.Node.FS
import SCons.Scanner
def only_dirs(nodes):
is_Dir = lambda n: isinstance(n.disambiguate(), SCons.Node.FS.Dir)
return filter(is_Dir, nodes)
def DirScanner(**kw):
"""Return a prototype Scanner instance for scanning
directories for on-disk files"""
kw['node_factory'] = SCons.Node.FS.Entry
kw['recursive'] = only_dirs
return apply(SCons.Scanner.Base, (scan_on_disk, "DirScanner"), kw)
def DirEntryScanner(**kw):
"""Return a prototype Scanner instance for "scanning"
directory Nodes for their in-memory entries"""
kw['node_factory'] = SCons.Node.FS.Entry
kw['recursive'] = None
return apply(SCons.Scanner.Base, (scan_in_memory, "DirEntryScanner"), kw)
skip_entry = {}
skip_entry_list = [
'.',
'..',
'.sconsign',
# Used by the native dblite.py module.
'.sconsign.dblite',
# Used by dbm and dumbdbm.
'.sconsign.dir',
# Used by dbm.
'.sconsign.pag',
# Used by dumbdbm.
'.sconsign.dat',
'.sconsign.bak',
# Used by some dbm emulations using Berkeley DB.
'.sconsign.db',
]
for skip in skip_entry_list:
skip_entry[skip] = 1
skip_entry[SCons.Node.FS._my_normcase(skip)] = 1
do_not_scan = lambda k: not skip_entry.has_key(k)
def scan_on_disk(node, env, path=()):
"""
Scans a directory for on-disk files and directories therein.
Looking up the entries will add these to the in-memory Node tree
representation of the file system, so all we have to do is just
that and then call the in-memory scanning function.
"""
try:
flist = node.fs.listdir(node.abspath)
except (IOError, OSError):
return []
e = node.Entry
for f in filter(do_not_scan, flist):
# Add ./ to the beginning of the file name so if it begins with a
# '#' we don't look it up relative to the top-level directory.
e('./' + f)
return scan_in_memory(node, env, path)
def scan_in_memory(node, env, path=()):
"""
"Scans" a Node.FS.Dir for its in-memory entries.
"""
entry_list = filter(do_not_scan, node.entries.keys())
entry_list.sort()
return map(lambda n, e=node.entries: e[n], entry_list)
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