Source code for SCons.Scanner.Dir

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import SCons.Node.FS
import SCons.Scanner

[docs]def only_dirs(nodes): is_Dir = lambda n: isinstance(n.disambiguate(), SCons.Node.FS.Dir) return [node for node in nodes if is_Dir(node)]
[docs]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 SCons.Scanner.Base(scan_on_disk, "DirScanner", **kw)
[docs]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 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: k not in skip_entry
[docs]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.get_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)
[docs]def scan_in_memory(node, env, path=()): """ "Scans" a Node.FS.Dir for its in-memory entries. """ try: entries = node.entries except AttributeError: # It's not a Node.FS.Dir (or doesn't look enough like one for # our purposes), which can happen if a target list containing # mixed Node types (Dirs and Files, for example) has a Dir as # the first entry. return [] entry_list = sorted(filter(do_not_scan, list(entries.keys()))) return [entries[n] for n in entry_list]
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