You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
2.7 KiB
77 lines
2.7 KiB
6 years ago
|
class FormatBase(object):
|
||
|
|
"""
|
||
|
|
Base class for subtitle format implementations.
|
||
|
|
|
||
|
|
How to implement a new subtitle format:
|
||
|
|
|
||
|
|
1. Create a subclass of FormatBase and override the methods you want to support.
|
||
|
|
2. Decide on a format identifier, like the ``"srt"`` or ``"microdvd"`` already used in the library.
|
||
|
|
3. Add your identifier and class to :data:`pysubs2.formats.FORMAT_IDENTIFIER_TO_FORMAT_CLASS`.
|
||
|
|
4. (optional) Add your file extension and class to :data:`pysubs2.formats.FILE_EXTENSION_TO_FORMAT_IDENTIFIER`.
|
||
|
|
|
||
|
|
After finishing these steps, you can call :meth:`SSAFile.load()` and :meth:`SSAFile.save()` with your
|
||
|
|
format, including autodetection from content and file extension (if you provided these).
|
||
|
|
|
||
|
|
"""
|
||
|
|
@classmethod
|
||
|
|
def from_file(cls, subs, fp, format_, **kwargs):
|
||
|
|
"""
|
||
|
|
Load subtitle file into an empty SSAFile.
|
||
|
|
|
||
|
|
If the parser autodetects framerate, set it as ``subs.fps``.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
subs (SSAFile): An empty :class:`SSAFile`.
|
||
|
|
fp (file object): Text file object, the subtitle file.
|
||
|
|
format_ (str): Format identifier. Used when one format class
|
||
|
|
implements multiple formats (see :class:`SubstationFormat`).
|
||
|
|
kwargs: Extra options, eg. `fps`.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
None
|
||
|
|
|
||
|
|
Raises:
|
||
|
|
pysubs2.exceptions.UnknownFPSError: Framerate was not provided and cannot
|
||
|
|
be detected.
|
||
|
|
"""
|
||
|
|
raise NotImplementedError("Parsing is not supported for this format")
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def to_file(cls, subs, fp, format_, **kwargs):
|
||
|
|
"""
|
||
|
|
Write SSAFile into a file.
|
||
|
|
|
||
|
|
If you need framerate and it is not passed in keyword arguments,
|
||
|
|
use ``subs.fps``.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
subs (SSAFile): Subtitle file to write.
|
||
|
|
fp (file object): Text file object used as output.
|
||
|
|
format_ (str): Format identifier of desired output format.
|
||
|
|
Used when one format class implements multiple formats
|
||
|
|
(see :class:`SubstationFormat`).
|
||
|
|
kwargs: Extra options, eg. `fps`.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
None
|
||
|
|
|
||
|
|
Raises:
|
||
|
|
pysubs2.exceptions.UnknownFPSError: Framerate was not provided and
|
||
|
|
``subs.fps is None``.
|
||
|
|
"""
|
||
|
|
raise NotImplementedError("Writing is not supported for this format")
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def guess_format(self, text):
|
||
|
|
"""
|
||
|
|
Return format identifier of recognized format, or None.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
text (str): Content of subtitle file. When the file is long,
|
||
|
|
this may be only its first few thousand characters.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
format identifier (eg. ``"srt"``) or None (unknown format)
|
||
|
|
"""
|
||
|
|
return None
|