def read(self, address):
u""" Nuskaito iš atminties virtualios mašinos puslapiavimo lentelę.
"""
self.PLR, self.PLBR = self.memory.get_address_tuple(address)
for id in range(4):
mode, name = self.get_file_descriptor(id)
if mode == 'i':
self.files[id] = self.create_reader(self.stdin_handler)
elif mode == 'o':
self.files[id] = self.create_writer(self.stdout_handler)
elif mode == 'r':
self.files[id] = self.create_reader(
file_system.open(name).read)
elif mode == 'w':
self.files[id] = self.create_writer(
file_system.create(name).write)
def getFileInfo(self, fileNr):
content = []
files = file_system.get_files()
print ' '.join(files)
if len(files)-1 < fileNr:
stdout("Šis failas dar nesukurtas")
else:
file_name = files[fileNr]
files[fileNr] = file_system.open(files[fileNr])
try:
file_content = '\n'.join(files[fileNr].data)
except Exception, e:
pass
self.fileFrame = FileInfoFrame(self)
app.SetTopWindow(self.fileFrame)
self.fileFrame.file_name.SetLabel(str(file_name))
self.fileFrame.file_contents.SetValue(str(file_content))
self.fileFrame.Centre()
self.fileFrame.Show()
def file_open(self, name):
u""" Atidaro failą skaitymui.
Sukuria failo deskriptorių ir grąžina failo id.
"""
for id in range(4):
mode, file_name = self.get_file_descriptor(id)
if mode != 0 and file_name == name:
raise ValueError(u'Failas tokiu vardu jau atidarytas.')
for id in range(4):
mode, tmp = self.get_file_descriptor(id)
if mode == '0':
self.set_file_descriptor(id, 'r', name)
self.files[id] = self.create_reader(
file_system.open(name).read)
return id
raise Exception(u'Viršytas atidarytų failų limitas.')