2 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
4 # Permission is hereby granted, free of charge, to any person obtaining
5 # a copy of this software and associated documentation files (the
6 # "Software"), to deal in the Software without restriction, including
7 # without limitation the rights to use, copy, modify, merge, publish,
8 # distribute, sublicense, and/or sell copies of the Software, and to
9 # permit persons to whom the Software is furnished to do so, subject to
10 # the following conditions:
12 # The above copyright notice and this permission notice shall be included
13 # in all copies or substantial portions of the Software.
15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
16 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
17 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 __revision__ = "src/engine/SCons/Scanner/Dir.py 3842 2008/12/20 22:59:52 scons"
30 is_Dir = lambda n: isinstance(n.disambiguate(), SCons.Node.FS.Dir)
31 return filter(is_Dir, nodes)
34 """Return a prototype Scanner instance for scanning
35 directories for on-disk files"""
36 kw['node_factory'] = SCons.Node.FS.Entry
37 kw['recursive'] = only_dirs
38 return apply(SCons.Scanner.Base, (scan_on_disk, "DirScanner"), kw)
40 def DirEntryScanner(**kw):
41 """Return a prototype Scanner instance for "scanning"
42 directory Nodes for their in-memory entries"""
43 kw['node_factory'] = SCons.Node.FS.Entry
44 kw['recursive'] = None
45 return apply(SCons.Scanner.Base, (scan_in_memory, "DirEntryScanner"), kw)
53 # Used by the native dblite.py module.
55 # Used by dbm and dumbdbm.
62 # Used by some dbm emulations using Berkeley DB.
66 for skip in skip_entry_list:
68 skip_entry[SCons.Node.FS._my_normcase(skip)] = 1
70 do_not_scan = lambda k: not skip_entry.has_key(k)
72 def scan_on_disk(node, env, path=()):
74 Scans a directory for on-disk files and directories therein.
76 Looking up the entries will add these to the in-memory Node tree
77 representation of the file system, so all we have to do is just
78 that and then call the in-memory scanning function.
81 flist = node.fs.listdir(node.abspath)
82 except (IOError, OSError):
85 for f in filter(do_not_scan, flist):
86 # Add ./ to the beginning of the file name so if it begins with a
87 # '#' we don't look it up relative to the top-level directory.
89 return scan_in_memory(node, env, path)
91 def scan_in_memory(node, env, path=()):
93 "Scans" a Node.FS.Dir for its in-memory entries.
96 entries = node.entries
97 except AttributeError:
98 # It's not a Node.FS.Dir (or doesn't look enough like one for
99 # our purposes), which can happen if a target list containing
100 # mixed Node types (Dirs and Files, for example) has a Dir as
103 entry_list = filter(do_not_scan, entries.keys())
105 return map(lambda n, e=entries: e[n], entry_list)