def createFields(self):
# Read boot seector
boot = Boot(self, "boot", "Boot sector")
yield boot
self.sector_size = boot["sector_size"].value
if self.version == 32:
for field in sorted((
(boot["inf_sector"].value, lambda: FSInfo(self, "fsinfo")),
(boot["boot_copy"].value,
lambda: Boot(self, "bkboot", "Copy of the boot sector")),
)):
if field[0]:
padding = self.seekByte(field[0] * self.sector_size)
if padding:
yield padding
yield field[1]()
padding = self.seekByte(boot["reserved_sectors"].value *
self.sector_size)
if padding:
yield padding
# Read the two FAT
fat_size = boot["fat_size"].value
if fat_size == 0:
fat_size = boot["fat32_size"].value
fat_size *= self.sector_size * 8
for i in xrange(boot["fat_nb"].value):
yield FAT(self, "fat[]", "File Allocation Table", size=fat_size)
# Read inode table (Directory)
self.cluster_size = boot["cluster_size"].value * self.sector_size * 8
self.fat = self["fat[0]"]
if "root_start" in boot:
self.target_size = 0
self.getCluster = lambda: boot["root_start"].value
yield InodeLink(self, "root", "root")
else:
yield Directory(self,
"root[]",
size=boot["max_root"].value * 32 * 8)
self.data_start = self.current_size - 2 * self.cluster_size
sectors = boot["sectors1"].value
if not sectors:
sectors = boot["sectors2"].value
# Create one big padding field for the end
size = sectors * self.sector_size
if self._size:
size = min(size, self.size // 8)
padding = self.seekByte(size)
if padding:
yield padding
def exportPlaintext(self,
priority=None,
human=True,
line_prefix=u"- ",
title=None):
r"""
Convert metadata to multi-line Unicode string and skip datas
with priority lower than specified priority.
Default priority is Metadata.MAX_PRIORITY. If human flag is True, data
key are translated to better human name (eg. "bit_rate" becomes
"Bit rate") which may be translated using gettext.
If priority is too small, metadata are empty and so None is returned.
>>> print RootMetadata().exportPlaintext()
None
>>> meta = RootMetadata()
>>> meta.copyright = unicode("© Hachoir", "UTF-8")
>>> print repr(meta.exportPlaintext())
[u'Metadata:', u'- Copyright: \xa9 Hachoir']
@see __str__() and __unicode__()
"""
if priority is not None:
priority = max(priority, MIN_PRIORITY)
priority = min(priority, MAX_PRIORITY)
else:
priority = MAX_PRIORITY
if not title:
title = self.header
text = ["%s:" % title]
for data in sorted(self):
if priority < data.priority:
break
if not data.values:
continue
if human:
title = data.description
else:
title = data.key
for item in data.values:
if human:
value = item.text
else:
value = makeUnicode(item.value)
text.append("%s%s: %s" % (line_prefix, title, value))
if 1 < len(text):
return text
else:
return None
def createFields(self):
# Read boot seector
boot = Boot(self, "boot", "Boot sector")
yield boot
self.sector_size = boot["sector_size"].value
if self.version == 32:
for field in sorted((
(boot["inf_sector"].value, lambda: FSInfo(self, "fsinfo")),
(boot["boot_copy"].value, lambda: Boot(self, "bkboot", "Copy of the boot sector")),
)):
if field[0]:
padding = self.seekByte(field[0] * self.sector_size)
if padding:
yield padding
yield field[1]()
padding = self.seekByte(boot["reserved_sectors"].value * self.sector_size)
if padding:
yield padding
# Read the two FAT
fat_size = boot["fat_size"].value
if fat_size == 0:
fat_size = boot["fat32_size"].value
fat_size *= self.sector_size * 8
for i in xrange(boot["fat_nb"].value):
yield FAT(self, "fat[]", "File Allocation Table", size=fat_size)
# Read inode table (Directory)
self.cluster_size = boot["cluster_size"].value * self.sector_size * 8
self.fat = self["fat[0]"]
if "root_start" in boot:
self.target_size = 0
self.getCluster = lambda: boot["root_start"].value
yield InodeLink(self, "root", "root")
else:
yield Directory(self, "root[]", size=boot["max_root"].value * 32 * 8)
self.data_start = self.current_size - 2 * self.cluster_size
sectors = boot["sectors1"].value
if not sectors:
sectors = boot["sectors2"].value
# Create one big padding field for the end
size = sectors * self.sector_size
if self._size:
size = min(size, self.size//8)
padding = self.seekByte(size)
if padding:
yield padding
def exportPlaintext(self, priority=None, human=True, line_prefix=u"- ", title=None):
r"""
Convert metadata to multi-line Unicode string and skip datas
with priority lower than specified priority.
Default priority is Metadata.MAX_PRIORITY. If human flag is True, data
key are translated to better human name (eg. "bit_rate" becomes
"Bit rate") which may be translated using gettext.
If priority is too small, metadata are empty and so None is returned.
>>> print RootMetadata().exportPlaintext()
None
>>> meta = RootMetadata()
>>> meta.copyright = unicode("© Hachoir", "UTF-8")
>>> print repr(meta.exportPlaintext())
[u'Metadata:', u'- Copyright: \xa9 Hachoir']
@see __str__() and __unicode__()
"""
if priority is not None:
priority = max(priority, MIN_PRIORITY)
priority = min(priority, MAX_PRIORITY)
else:
priority = MAX_PRIORITY
if not title:
title = self.header
text = ["%s:" % title]
for data in sorted(self):
if priority < data.priority:
break
if not data.values:
continue
if human:
title = data.description
else:
title = data.key
for item in data.values:
if human:
value = item.text
else:
value = makeUnicode(item.value)
text.append("%s%s: %s" % (line_prefix, title, value))
if 1 < len(text):
return text
else:
return None
