def GetMime(path, ok_to_look_for_hydrus_updates=False):
size = os.path.getsize(path)
if size == 0:
raise HydrusExceptions.ZeroSizeFileException('File is of zero length!')
if ok_to_look_for_hydrus_updates and size < 64 * 1024 * 1024:
with open(path, 'rb') as f:
update_network_bytes = f.read()
try:
update = HydrusSerialisable.CreateFromNetworkBytes(
update_network_bytes)
if isinstance(update, HydrusNetwork.ContentUpdate):
return HC.APPLICATION_HYDRUS_UPDATE_CONTENT
elif isinstance(update, HydrusNetwork.DefinitionsUpdate):
return HC.APPLICATION_HYDRUS_UPDATE_DEFINITIONS
except:
pass
with open(path, 'rb') as f:
bit_to_check = f.read(256)
for (offsets_and_headers, mime) in headers_and_mime:
it_passes = False not in (bit_to_check[offset:].startswith(header)
for (offset, header) in offsets_and_headers)
if it_passes:
if mime in (HC.UNDETERMINED_WM, HC.UNDETERMINED_MP4):
return HydrusVideoHandling.GetMime(path)
elif mime == HC.UNDETERMINED_PNG:
if IsPNGAnimated(bit_to_check):
return HC.IMAGE_APNG
else:
return HC.IMAGE_PNG
else:
return mime
if HydrusText.LooksLikeHTML(bit_to_check):
return HC.TEXT_HTML
# it is important this goes at the end, because ffmpeg has a billion false positives!
# for instance, it once thought some hydrus update files were mpegs
try:
mime = HydrusVideoHandling.GetMime(path)
if mime != HC.APPLICATION_UNKNOWN:
return mime
except HydrusExceptions.UnsupportedFileException:
pass
except Exception as e:
HydrusData.Print('FFMPEG had trouble with: ' + path)
HydrusData.PrintException(e, do_wait=False)
return HC.APPLICATION_UNKNOWN
def GetFileInfo(path, mime=None, ok_to_look_for_hydrus_updates=False):
size = os.path.getsize(path)
if size == 0:
raise HydrusExceptions.ZeroSizeFileException('File is of zero length!')
if mime is None:
mime = GetMime(
path, ok_to_look_for_hydrus_updates=ok_to_look_for_hydrus_updates)
if mime not in HC.ALLOWED_MIMES:
if mime == HC.TEXT_HTML:
raise HydrusExceptions.UnsupportedFileException(
'Looks like HTML -- maybe the client needs to be taught how to parse this?'
)
elif mime == HC.APPLICATION_UNKNOWN:
raise HydrusExceptions.UnsupportedFileException(
'Unknown filetype!')
else:
raise HydrusExceptions.UnsupportedFileException(
'Filetype is not permitted!')
width = None
height = None
duration = None
num_frames = None
num_words = None
if mime in HC.MIMES_THAT_DEFINITELY_HAVE_AUDIO:
has_audio = True
else:
has_audio = False
if mime in (HC.IMAGE_JPEG, HC.IMAGE_PNG, HC.IMAGE_GIF, HC.IMAGE_WEBP,
HC.IMAGE_TIFF, HC.IMAGE_ICON):
((width, height), duration,
num_frames) = HydrusImageHandling.GetImageProperties(path, mime)
elif mime == HC.APPLICATION_CLIP:
((width, height), duration,
num_frames) = HydrusClipHandling.GetClipProperties(path)
elif mime == HC.APPLICATION_FLASH:
((width, height), duration,
num_frames) = HydrusFlashHandling.GetFlashProperties(path)
elif mime == HC.IMAGE_APNG:
((width, height), duration, num_frames,
has_audio) = HydrusVideoHandling.GetFFMPEGAPNGProperties(path)
elif mime == HC.APPLICATION_PDF:
num_words = HydrusDocumentHandling.GetPDFNumWords(
path) # this now give None until a better solution can be found
elif mime == HC.APPLICATION_PSD:
(width, height) = HydrusImageHandling.GetPSDResolution(path)
elif mime in HC.VIDEO:
((width, height), duration, num_frames,
has_audio) = HydrusVideoHandling.GetFFMPEGVideoProperties(path)
elif mime in HC.AUDIO:
ffmpeg_lines = HydrusVideoHandling.GetFFMPEGInfoLines(path)
(file_duration_in_s, stream_duration_in_s
) = HydrusVideoHandling.ParseFFMPEGDuration(ffmpeg_lines)
duration = int(file_duration_in_s * 1000)
if width is not None and width < 0:
width *= -1
if height is not None and height < 0:
width *= -1
if duration is not None and duration < 0:
duration *= -1
if num_frames is not None and num_frames < 0:
num_frames *= -1
if num_words is not None and num_words < 0:
num_words *= -1
return (size, mime, width, height, duration, num_frames, has_audio,
num_words)
