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(str(pathname), '.xml')
if doc.SaveFile(tfile.toOsSpecific()):
tfile.renameTo(usageFilename)
def getUsage(self):
""" Returns the xusage element that is read from the usage.xml
file, or None if there is no usage.xml file. """
if not hasattr(core, 'TiXmlDocument'):
return None
filename = Filename(self.getPackageDir(), self.UsageBasename)
doc = TiXmlDocument(filename.toOsSpecific())
if not doc.LoadFile():
return None
xusage = doc.FirstChildElement('usage')
if not xusage:
return None
return copy.copy(xusage)
def writeConfigXml(self):
""" Rewrites the config.xml to the root directory. This isn't
called automatically; an application may call this after
adjusting some parameters (such as self.maxDiskUsage). """
from panda3d.core import TiXmlDocument, TiXmlDeclaration, TiXmlElement
filename = Filename(self.rootDir, self.ConfigBasename)
doc = TiXmlDocument(filename.toOsSpecific())
decl = TiXmlDeclaration("1.0", "utf-8", "")
doc.InsertEndChild(decl)
xconfig = TiXmlElement('config')
xconfig.SetAttribute('max_disk_usage', str(self.maxDiskUsage))
doc.InsertEndChild(xconfig)
# Write the file to a temporary filename, then atomically move
# it to its actual filename, to avoid race conditions when
# updating this file.
tfile = Filename.temporary(str(self.rootDir), '.xml')
if doc.SaveFile(tfile.toOsSpecific()):
tfile.renameTo(filename)
def markUsed(self):
""" Marks the package as having been used. This is normally
called automatically by installPackage(). """
if not hasattr(core, 'TiXmlDocument'):
return
if self.host.appRunner and self.host.appRunner.verifyContents == self.host.appRunner.P3DVCNever:
# Not allowed to write any files to the package directory.
return
if self.updated:
# If we've just installed a new version of the package,
# re-measure the actual disk space used.
self.diskSpace = self.__measureDiskSpace()
filename = Filename(self.getPackageDir(), self.UsageBasename)
doc = TiXmlDocument(filename.toOsSpecific())
if not doc.LoadFile():
decl = TiXmlDeclaration("1.0", "utf-8", "")
doc.InsertEndChild(decl)
xusage = doc.FirstChildElement('usage')
if not xusage:
doc.InsertEndChild(TiXmlElement('usage'))
xusage = doc.FirstChildElement('usage')
now = int(time.time())
count = xusage.Attribute('count_app')
try:
count = int(count or '')
except ValueError:
count = 0
xusage.SetAttribute('first_use', str(now))
count += 1
xusage.SetAttribute('count_app', str(count))
xusage.SetAttribute('last_use', str(now))
if self.updated:
xusage.SetAttribute('last_update', str(now))
self.updated = False
else:
# Since we haven't changed the disk space, we can just
# read it from the previous xml file.
diskSpace = xusage.Attribute('disk_space')
try:
diskSpace = int(diskSpace or '')
except ValueError:
# Unless it wasn't set already.
self.diskSpace = self.__measureDiskSpace()
xusage.SetAttribute('disk_space', str(self.diskSpace))
# Write the file to a temporary filename, then atomically move
# it to its actual filename, to avoid race conditions when
# updating this file.
tfile = Filename.temporary(str(self.getPackageDir()), '.xml')
if doc.SaveFile(tfile.toOsSpecific()):
tfile.renameTo(filename)