def _fixFeedError(self, exception):
"""
Try to fix a feeding error. Returns False if error can't be fixed,
otherwise returns new field if any, or None.
"""
if self._size is None or not self.autofix:
return False
self.warning(makeUnicode(exception))
return self._fixLastField()
def _getDescription(self):
if self._description is None:
try:
self._description = self.createDescription()
if isinstance(self._description, str):
self._description = makeUnicode(self._description)
except Exception as err:
error("Error getting description of %s: %s" %
(self.path, str(err)))
self._description = self.PARSER_TAGS["description"]
return self._description
def __init__(self, stream, **args):
validate = args.pop("validate", False)
self._mime_type = None
while validate:
nbits = self.getParserTags()["min_size"]
if stream.sizeGe(nbits):
res = self.validate()
if res is True:
break
res = makeUnicode(res)
else:
res = "stream is smaller than %s.%s bytes" % divmod(nbits, 8)
raise ValidateError(res or "no reason given")
self._autofix = True
def useExtDescItem(self, desc, data):
if desc["type"].value == ASF_Descriptor.TYPE_BYTE_ARRAY:
# Skip binary data
return
key = desc["name"].value
if "/" in key:
# Replace "WM/ToolName" with "ToolName"
key = key.split("/", 1)[1]
if key in self.SKIP_EXT_DESC:
# Skip some keys
return
value = desc["value"].value
if not value:
return
value = makeUnicode(value)
data[key] = value
def exportPlaintext(self, priority=None, human=True, line_prefix="- ", 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 = "© Hachoir"
>>> print(repr(meta.exportPlaintext()))
['Metadata:', '- 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, key=lambda data: data.priority):
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 extractAVIVideo(self, header, meta):
meta.compression = "%s (fourcc:\"%s\")" \
% (header["fourcc"].display, makeUnicode(header["fourcc"].value))
if header["rate"].value and header["scale"].value:
fps = float(header["rate"].value) / header["scale"].value
meta.frame_rate = fps
if 0 < fps:
self.duration = meta.duration = timedelta(
seconds=float(header["length"].value) / fps)
if "../stream_fmt/width" in header:
format = header["../stream_fmt"]
meta.width = format["width"].value
meta.height = format["height"].value
meta.bits_per_pixel = format["depth"].value
else:
meta.width = header["right"].value - header["left"].value
meta.height = header["bottom"].value - header["top"].value
def parseIPTC(self, iptc):
datestr = hourstr = None
for field in iptc:
# Skip incomplete field
if "tag" not in field or "content" not in field:
continue
# Get value
value = field["content"].value
if isinstance(value, str):
value = value.replace("\r", " ")
value = value.replace("\n", " ")
# Skip unknown tag
tag = field["tag"].value
if tag == 55:
datestr = value
continue
if tag == 60:
hourstr = value
continue
if tag not in self.IPTC_KEY:
if tag != 0:
self.warning("Skip IPTC key %s: %s" %
(field["tag"].display, makeUnicode(value)))
continue
setattr(self, self.IPTC_KEY[tag], value)
if datestr and hourstr:
try:
year = int(datestr[0:4])
month = int(datestr[4:6])
day = int(datestr[6:8])
hour = int(hourstr[0:2])
min = int(hourstr[2:4])
sec = int(hourstr[4:6])
self.creation_date = datetime(year, month, day, hour, min, sec)
except ValueError:
pass
def exportDictionary(self, priority=None, human=True, title=None):
r"""
Convert metadata to python Dictionary 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.
"""
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 = {}
text[title] = {}
for data in sorted(self):
if priority < data.priority:
break
if not data.values:
continue
if human:
field = data.description
else:
field = data.key
text[title][field] = {}
for item in data.values:
if human:
value = item.text
else:
value = makeUnicode(item.value)
text[title][field] = value
return text
def createMimeType(self):
if self["file[0]/filename"].value == "mimetype":
return makeUnicode(self["file[0]/data"].value)
else:
return "application/zip"