mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-26 05:02:31 -06:00
93 lines
3.5 KiB
Python
93 lines
3.5 KiB
Python
from pandac.PandaModules import VirtualFileSystem, VirtualFileMountSystem, Filename, TiXmlDocument
|
|
vfs = VirtualFileSystem.getGlobalPtr()
|
|
|
|
class ScanDirectoryNode:
|
|
""" This class is used to scan a list of files on disk. """
|
|
|
|
def __init__(self, pathname, ignoreUsageXml = False):
|
|
self.pathname = pathname
|
|
self.filenames = []
|
|
self.fileSize = 0
|
|
self.nested = []
|
|
self.nestedSize = 0
|
|
|
|
xusage = None
|
|
if not ignoreUsageXml:
|
|
# Look for a usage.xml file in this directory. If we find
|
|
# one, we read it for the file size and then stop here, as
|
|
# an optimization.
|
|
usageFilename = Filename(pathname, 'usage.xml')
|
|
doc = TiXmlDocument(usageFilename.toOsSpecific())
|
|
if doc.LoadFile():
|
|
xusage = doc.FirstChildElement('usage')
|
|
if xusage:
|
|
diskSpace = xusage.Attribute('disk_space')
|
|
try:
|
|
diskSpace = int(diskSpace or '')
|
|
except ValueError:
|
|
diskSpace = None
|
|
if diskSpace is not None:
|
|
self.fileSize = diskSpace
|
|
return
|
|
|
|
files = vfs.scanDirectory(self.pathname)
|
|
if files is None:
|
|
files = []
|
|
for vfile in files:
|
|
if hasattr(vfile, 'getMount'):
|
|
if not isinstance(vfile.getMount(), VirtualFileMountSystem):
|
|
# Not a real file; ignore it.
|
|
continue
|
|
|
|
if vfile.isDirectory():
|
|
# A nested directory.
|
|
subdir = ScanDirectoryNode(vfile.getFilename(), ignoreUsageXml = ignoreUsageXml)
|
|
self.nested.append(subdir)
|
|
self.nestedSize += subdir.getTotalSize()
|
|
|
|
elif vfile.isRegularFile():
|
|
# A nested file.
|
|
self.filenames.append(vfile.getFilename())
|
|
self.fileSize += vfile.getFileSize()
|
|
|
|
else:
|
|
# Some other wacky file thing.
|
|
self.filenames.append(vfile.getFilename())
|
|
|
|
if xusage:
|
|
# Now update the usage.xml file with the newly-determined
|
|
# disk space.
|
|
xusage.SetAttribute('disk_space', str(self.getTotalSize()))
|
|
tfile = Filename.temporary(pathname.cStr(), '.xml')
|
|
if doc.SaveFile(tfile.toOsSpecific()):
|
|
tfile.renameTo(usageFilename)
|
|
|
|
def getTotalSize(self):
|
|
return self.nestedSize + self.fileSize
|
|
|
|
def extractSubdir(self, pathname):
|
|
""" Finds the ScanDirectoryNode within this node that
|
|
corresponds to the indicated full pathname. If it is found,
|
|
removes it from its parent, and returns it. If it is not
|
|
found, returns None. """
|
|
|
|
# We could be a little smarter here, but why bother. Just
|
|
# recursively search all children.
|
|
for subdir in self.nested:
|
|
if subdir.pathname == pathname:
|
|
self.nested.remove(subdir)
|
|
self.nestedSize -= subdir.getTotalSize()
|
|
return subdir
|
|
|
|
result = subdir.extractSubdir(pathname)
|
|
if result:
|
|
self.nestedSize -= result.getTotalSize()
|
|
if subdir.getTotalSize() == 0:
|
|
# No other files in the subdirectory that contains
|
|
# this package; remove it too.
|
|
self.nested.remove(subdir)
|
|
return result
|
|
|
|
return None
|
|
|
|
|