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.
23 from __future__ import generators ### KEEP FOR COMPATIBILITY FIXERS
25 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
31 is_Dir = lambda n: isinstance(n.disambiguate(), SCons.Node.FS.Dir)
32 return list(filter(is_Dir, nodes))
35 """Return a prototype Scanner instance for scanning
36 directories for on-disk files"""
37 kw['node_factory'] = SCons.Node.FS.Entry
38 kw['recursive'] = only_dirs
39 return SCons.Scanner.Base(scan_on_disk, "DirScanner", **kw)
41 def DirEntryScanner(**kw):
42 """Return a prototype Scanner instance for "scanning"
43 directory Nodes for their in-memory entries"""
44 kw['node_factory'] = SCons.Node.FS.Entry
45 kw['recursive'] = None
46 return SCons.Scanner.Base(scan_in_memory, "DirEntryScanner", **kw)
54 # Used by the native dblite.py module.
56 # Used by dbm and dumbdbm.
63 # Used by some dbm emulations using Berkeley DB.
67 for skip in skip_entry_list:
69 skip_entry[SCons.Node.FS._my_normcase(skip)] = 1
71 do_not_scan = lambda k: k not in skip_entry
73 def scan_on_disk(node, env, path=()):
75 Scans a directory for on-disk files and directories therein.
77 Looking up the entries will add these to the in-memory Node tree
78 representation of the file system, so all we have to do is just
79 that and then call the in-memory scanning function.
82 flist = node.fs.listdir(node.abspath)
83 except (IOError, OSError):
86 for f in filter(do_not_scan, flist):
87 # Add ./ to the beginning of the file name so if it begins with a
88 # '#' we don't look it up relative to the top-level directory.
90 return scan_in_memory(node, env, path)
92 def scan_in_memory(node, env, path=()):
94 "Scans" a Node.FS.Dir for its in-memory entries.
97 entries = node.entries
98 except AttributeError:
99 # It's not a Node.FS.Dir (or doesn't look enough like one for
100 # our purposes), which can happen if a target list containing
101 # mixed Node types (Dirs and Files, for example) has a Dir as
104 entry_list = list(filter(do_not_scan, entries.keys()))
106 return [entries[n] for n in entry_list]
110 # indent-tabs-mode:nil
112 # vim: set expandtab tabstop=4 shiftwidth=4: