def load(self):
exception = None
fh = None
try:
if self.filename.isEmpty():
raise IOError, "no filename specified for loading"
fh = QFile(self.filename)
if not fh.open(QIODevice.ReadOnly):
raise IOError, unicode(fh.errorString())
stream = QDataStream(fh)
magic = stream.readInt32()
if magic != MAGIC_NUMBER:
raise IOError, "unrecognized file type"
fileVersion = stream.readInt16()
if fileVersion != FILE_VERSION:
raise IOError, "unrecognized file type version"
self.ships = []
while not stream.atEnd():
name = QString()
owner = QString()
country = QString()
description = QString()
stream >> name >> owner >> country >> description
teu = stream.readInt32()
self.ships.append(Ship(name, owner, country, teu,
description))
self.owners.add(unicode(owner))
self.countries.add(unicode(country))
self.dirty = False
except IOError, err:
exception = err
def load(self):
exception = None
fh = None
try:
if self.filename.isEmpty():
raise IOError, "no filename specified for loading"
fh = QFile(self.filename)
if not fh.open(QIODevice.ReadOnly):
raise IOError, unicode(fh.errorString())
stream = QDataStream(fh)
magic = stream.readInt32()
if magic != MAGIC_NUMBER:
raise IOError, "unrecognized file type"
fileVersion = stream.readInt16()
if fileVersion != FILE_VERSION:
raise IOError, "unrecognized file type version"
self.ships = []
while not stream.atEnd():
name = QString()
owner = QString()
country = QString()
description = QString()
stream >> name >> owner >> country >> description
teu = stream.readInt32()
self.ships.append(Ship(name, owner, country, teu,
description))
self.owners.add(unicode(owner))
self.countries.add(unicode(country))
self.dirty = False
except IOError, e:
exception = e
def open(self):
self.offerSave()
path = (QFileInfo(self.filename).path()
if not self.filename.isEmpty() else ".")
fname = QFileDialog.getOpenFileName(self,
"Page Designer - Open", path,
"Page Designer Files (*.pgd)")
if fname.isEmpty():
return
self.filename = fname
fh = None
try:
fh = QFile(self.filename)
if not fh.open(QIODevice.ReadOnly):
raise IOError, unicode(fh.errorString())
items = self.scene.items()
while items:
item = items.pop()
self.scene.removeItem(item)
del item
self.addBorders()
stream = QDataStream(fh)
stream.setVersion(QDataStream.Qt_4_2)
magic = stream.readInt32()
if magic != MagicNumber:
raise IOError, "not a valid .pgd file"
fileVersion = stream.readInt16()
if fileVersion != FileVersion:
raise IOError, "unrecognised .pgd file version"
while not fh.atEnd():
self.readItemFromStream(stream)
except IOError, e:
QMessageBox.warning(self, "Page Designer -- Open Error",
"Failed to open {0}: {1}".format(self.filename, e))
def loadQDataStream(self):
error = None
fh = None
try:
fh = QFile(self.__fname)
if not fh.open(QIODevice.ReadOnly):
raise IOError(str(fh.errorString()))
stream = QDataStream(fh)
magic = stream.readInt32()
if magic != MovieContainer.MAGIC_NUMBER:
raise IOError("unrecognized file type")
version = stream.readInt32()
if version < MovieContainer.OLD_FILE_VERSION:
raise IOError("old and unreadable file format")
elif version > MovieContainer.FILE_VERSION:
raise IOError("new and unreadable file format")
old = False
if version == MovieContainer.OLD_FILE_VERSION:
old = True
stream.setVersion(QDataStream.Qt_4_2)
self.clear(False)
while not stream.atEnd():
title = QString()
acquired = QDate()
location = QString()
notes = QString()
stream >> title
year = stream.readInt16()
minutes = stream.readInt16()
if old:
stream >> acquired >> notes
else:
stream >> acquired >> location >> notes
self.add(Movie(title, year, minutes, acquired, location,
notes))
except EnvironmentError as e:
error = "Failed to load: {0}".format(e)
finally:
if fh is not None:
fh.close()
if error is not None:
return False, error
self.__dirty = False
return True, "Loaded {0} movie records from {1}".format(
len(self.__movies),
QFileInfo(self.__fname).fileName())
def loadQDataStream(self):
error = None
fh = None
try:
fh = QFile(self.__fname)
if not fh.open(QIODevice.ReadOnly):
raise IOError(str(fh.errorString()))
stream = QDataStream(fh)
magic = stream.readInt32()
if magic != MovieContainer.MAGIC_NUMBER:
raise IOError("unrecognized file type")
version = stream.readInt32()
if version < MovieContainer.OLD_FILE_VERSION:
raise IOError("old and unreadable file format")
elif version > MovieContainer.FILE_VERSION:
raise IOError("new and unreadable file format")
old = False
if version == MovieContainer.OLD_FILE_VERSION:
old = True
stream.setVersion(QDataStream.Qt_4_2)
self.clear(False)
while not stream.atEnd():
title = QString()
acquired = QDate()
location = QString()
notes = QString()
stream >> title
year = stream.readInt16()
minutes = stream.readInt16()
if old:
stream >> acquired >> notes
else:
stream >> acquired >> location >> notes
self.add(Movie(title, year, minutes, acquired,
location, notes))
except EnvironmentError as e:
error = "Failed to load: {0}".format(e)
finally:
if fh is not None:
fh.close()
if error is not None:
return False, error
self.__dirty = False
return True, "Loaded {0} movie records from {1}".format(
len(self.__movies),
QFileInfo(self.__fname).fileName())
def run(self):
fh = QFile(self.filename)
fhlen = self._file_len(self.filename)
if not fh.open(QIODevice.ReadOnly):
raise IOError, unicode(fh.errorString())
self.data_block = {}
stream = QDataStream(fh)
stream.setVersion(QDataStream.Qt_4_2)
magic = stream.readInt32()
if magic != gMAGICNUM:
raise IOError, "not a valid .jd file"
fileVersion = stream.readInt16()
if fileVersion != gFILEVERSION:
raise IOError, "unrecognised .jd file version"
while not fh.atEnd():
self._ReadItemFromStream(stream)
self.emit(SIGNAL("PROJECTLOADERDONE(PyQt_PyObject)"), self.data_block)
def load(self):
exception = None
fh = None
try:
if self.filename.isEmpty():
raise IOError("no filename specified for loading")
fh = QFile(self.filename)
if not fh.open(QIODevice.ReadOnly):
raise IOError(str(fh.errorString()))
stream = QDataStream(fh)
magic = stream.readInt32()
if magic != MAGIC_NUMBER:
raise IOError("unrecognized file type")
fileVersion = stream.readInt16()
if fileVersion != FILE_VERSION:
raise IOError("unrecognized file type version")
self.ships = {}
while not stream.atEnd():
name = QString()
owner = QString()
country = QString()
description = QString()
stream >> name >> owner >> country >> description
teu = stream.readInt32()
ship = Ship(name, owner, country, teu, description)
self.ships[id(ship)] = ship
self.owners.add(str(owner))
self.countries.add(str(country))
self.dirty = False
except IOError as e:
exception = e
finally:
if fh is not None:
fh.close()
if exception is not None:
raise exception
