132 lines
4.3 KiB
Python
132 lines
4.3 KiB
Python
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# MIT License
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#
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# Copyright 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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import SCons.Node.FS
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from . import ScannerBase
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def only_dirs(nodes):
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is_Dir = lambda n: isinstance(n.disambiguate(), SCons.Node.FS.Dir)
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return [node for node in nodes if is_Dir(node)]
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def DirScanner(**kwargs):
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"""Return a prototype Scanner instance for scanning
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directories for on-disk files"""
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kwargs['node_factory'] = SCons.Node.FS.Entry
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kwargs['recursive'] = only_dirs
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return ScannerBase(scan_on_disk, "DirScanner", **kwargs)
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def DirEntryScanner(**kwargs):
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"""Return a prototype Scanner instance for "scanning"
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directory Nodes for their in-memory entries"""
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kwargs['node_factory'] = SCons.Node.FS.Entry
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kwargs['recursive'] = None
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return ScannerBase(scan_in_memory, "DirEntryScanner", **kwargs)
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skip_entry = {}
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skip_entry_list = [
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'.',
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'..',
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'.sconsign',
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# Used by the native dblite.py module.
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'.sconsign.dblite',
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# Used by dbm and dumbdbm.
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'.sconsign.dir',
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# Used by dbm.
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'.sconsign.pag',
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# Used by dumbdbm.
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'.sconsign.dat',
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'.sconsign.bak',
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# Used by some dbm emulations using Berkeley DB.
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'.sconsign.db',
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# new filenames since multiple hash formats allowed:
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'.sconsign_md5.dblite',
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'.sconsign_sha1.dblite',
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'.sconsign_sha256.dblite',
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# and all the duplicate files for each sub-sconsfile type
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'.sconsign_md5',
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'.sconsign_md5.dir',
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'.sconsign_md5.pag',
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'.sconsign_md5.dat',
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'.sconsign_md5.bak',
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'.sconsign_md5.db',
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'.sconsign_sha1',
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'.sconsign_sha1.dir',
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'.sconsign_sha1.pag',
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'.sconsign_sha1.dat',
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'.sconsign_sha1.bak',
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'.sconsign_sha1.db',
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'.sconsign_sha256',
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'.sconsign_sha256.dir',
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'.sconsign_sha256.pag',
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'.sconsign_sha256.dat',
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'.sconsign_sha256.bak',
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'.sconsign_sha256.db',
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]
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for skip in skip_entry_list:
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skip_entry[skip] = 1
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skip_entry[SCons.Node.FS._my_normcase(skip)] = 1
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do_not_scan = lambda k: k not in skip_entry
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def scan_on_disk(node, env, path=()):
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"""
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Scans a directory for on-disk files and directories therein.
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Looking up the entries will add these to the in-memory Node tree
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representation of the file system, so all we have to do is just
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that and then call the in-memory scanning function.
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"""
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try:
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flist = node.fs.listdir(node.get_abspath())
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except (IOError, OSError):
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return []
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e = node.Entry
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for f in filter(do_not_scan, flist):
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# Add ./ to the beginning of the file name so if it begins with a
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# '#' we don't look it up relative to the top-level directory.
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e('./' + f)
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return scan_in_memory(node, env, path)
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def scan_in_memory(node, env, path=()):
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"""
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"Scans" a Node.FS.Dir for its in-memory entries.
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"""
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try:
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entries = node.entries
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except AttributeError:
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# It's not a Node.FS.Dir (or doesn't look enough like one for
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# our purposes), which can happen if a target list containing
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# mixed Node types (Dirs and Files, for example) has a Dir as
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# the first entry.
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return []
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entry_list = sorted(filter(do_not_scan, list(entries.keys())))
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return [entries[n] for n in entry_list]
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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