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lib

Main Cridlib library.

CRID

Represent CRIDs and can parse, validate and render them.

Examples

Generate a CRID from an URL and render it's repr:
```python
>>> CRID("crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z")
<class 'cridlib.lib.CRID' for 'crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z'>

```

Generate a CRID and render it as str:
```python
>>> str(CRID("crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z"))
'crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z'

```
Source code in cridlib/lib.py 
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class CRID:
    """Represent CRIDs and can parse, validate and render them.

    Examples
    --------
        Generate a CRID from an URL and render it's repr:
        ```python
        >>> CRID("crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z")
        <class 'cridlib.lib.CRID' for 'crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z'>

        ```

        Generate a CRID and render it as str:
        ```python
        >>> str(CRID("crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z"))
        'crid://rabe.ch/v1/test#t=clock=19930301T131200.00Z'

        ```

    """

    def __init__(self: Self, uri: str | None = None) -> None:
        """Create new CRID.

        Args:
        ----
            uri: CRID URL to base the new CRID off of.

        """
        self._show: str | None = None
        self._start: datetime | None = None

        self._uri = urisplit(uri)
        if self.scheme != "crid":
            raise CRIDSchemeMismatchError(self.scheme, uri)
        if self.authority != "rabe.ch":
            raise CRIDSchemeAuthorityMismatchError(self.authority, uri)
        # parent.stem contains version in /v1/foo paths, stem in generic root /v1 path
        if self.path.parent.stem != "v1" and self.path.stem != "v1":
            raise CRIDUnsupportedVersionError(self.path, uri)
        self._version = self.path.parent.stem or self.path.stem
        # only store show if we have one
        if self.path.stem != "v1":
            self._show = self.path.relative_to(self.path.parent).stem
        # fragments are optional, but if provided we want them to contain t=code
        if self.fragment:
            try:
                # TODO(hairmare): investigate noqa for bug
                # https://github.com/radiorabe/python-rabe-cridlib/issues/244
                self._start = datetime.strptime(  # noqa: DTZ007
                    parse_qs(parse_qs(self.fragment)["t"][0])["clock"][0],
                    "%Y%m%dT%H%M%S.%fZ",
                )
            except KeyError as ex:
                raise CRIDMissingMediaFragmentError(self.fragment, uri) from ex
            except ValueError as ex:  # pragma: no cover
                raise CRIDMalformedMediaFragmentError(self.fragment, uri) from ex

    def __str__(self: Self) -> str:
        """Stringfy.

        Returns
        -------
            CRID URL rendered as string.

        """
        return uricompose(*self._uri)

    def __repr__(self: Self) -> str:
        """Repr."""
        _fqcn = f"{self.__class__.__module__}.{self.__class__.__qualname__}"
        return f"<class '{_fqcn}' for '{self!s}'>"

    @property
    def scheme(self: Self) -> str:
        """Scheme.

        Returns
        -------
            Scheme part of the CRID.

        """
        return self._uri.scheme

    @property
    def authority(self: Self) -> str:
        """Authority.

        Returns
        -------
            Authority part (aka hostname) of CRID.

        """
        return self._uri.authority

    @property
    def path(self: Self) -> CRIDPath:
        """Path.

        Returns
        -------
            Path part of CRID.

        """
        return CRIDPath(self._uri.path)

    @property
    def fragment(self: Self) -> str:
        """Fragment.

        Returns
        -------
            Fragment part of CRID.

        """
        return self._uri.fragment

    @property
    def version(self: Self) -> str:
        """Version.

        Returns
        -------
            Version from CRIDs path.

        """
        return self._version

    @property
    def show(self: Self) -> str | None:
        """Slug.

        Returns
        -------
            Show slug from CRIDs path.

        """
        return self._show

    @property
    def start(self: Self) -> datetime | None:
        """Start time.

        Returns
        -------
            Start time form CRIDs media fragment.

        """
        return self._start

authority property

Authority.

Returns
Authority part (aka hostname) of CRID.

fragment property

Fragment.

Returns
Fragment part of CRID.

path property

Path.

Returns
Path part of CRID.

scheme property

Scheme.

Returns
Scheme part of the CRID.

show property

Slug.

Returns
Show slug from CRIDs path.

start property

Start time.

Returns
Start time form CRIDs media fragment.

version property

Version.

Returns
Version from CRIDs path.

__init__(uri=None)

Create new CRID.

uri: CRID URL to base the new CRID off of.
Source code in cridlib/lib.py 
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def __init__(self: Self, uri: str | None = None) -> None:
    """Create new CRID.

    Args:
    ----
        uri: CRID URL to base the new CRID off of.

    """
    self._show: str | None = None
    self._start: datetime | None = None

    self._uri = urisplit(uri)
    if self.scheme != "crid":
        raise CRIDSchemeMismatchError(self.scheme, uri)
    if self.authority != "rabe.ch":
        raise CRIDSchemeAuthorityMismatchError(self.authority, uri)
    # parent.stem contains version in /v1/foo paths, stem in generic root /v1 path
    if self.path.parent.stem != "v1" and self.path.stem != "v1":
        raise CRIDUnsupportedVersionError(self.path, uri)
    self._version = self.path.parent.stem or self.path.stem
    # only store show if we have one
    if self.path.stem != "v1":
        self._show = self.path.relative_to(self.path.parent).stem
    # fragments are optional, but if provided we want them to contain t=code
    if self.fragment:
        try:
            # TODO(hairmare): investigate noqa for bug
            # https://github.com/radiorabe/python-rabe-cridlib/issues/244
            self._start = datetime.strptime(  # noqa: DTZ007
                parse_qs(parse_qs(self.fragment)["t"][0])["clock"][0],
                "%Y%m%dT%H%M%S.%fZ",
            )
        except KeyError as ex:
            raise CRIDMissingMediaFragmentError(self.fragment, uri) from ex
        except ValueError as ex:  # pragma: no cover
            raise CRIDMalformedMediaFragmentError(self.fragment, uri) from ex

__repr__()

Repr.

Source code in cridlib/lib.py 
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def __repr__(self: Self) -> str:
    """Repr."""
    _fqcn = f"{self.__class__.__module__}.{self.__class__.__qualname__}"
    return f"<class '{_fqcn}' for '{self!s}'>"

__str__()

Stringfy.

Returns
CRID URL rendered as string.
Source code in cridlib/lib.py 
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def __str__(self: Self) -> str:
    """Stringfy.

    Returns
    -------
        CRID URL rendered as string.

    """
    return uricompose(*self._uri)

CRIDError

Bases: Exception

Represent all cridlib errors.

Source code in cridlib/lib.py 
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class CRIDError(Exception):
    """Represent all cridlib errors."""

CRIDMalformedMediaFragmentError

Bases: CRIDError

Missing media-fragment with clock code.

Source code in cridlib/lib.py 
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class CRIDMalformedMediaFragmentError(CRIDError):
    """Missing media-fragment with clock code."""

CRIDMissingMediaFragmentError

Bases: CRIDError

Missing media-fragment with clock code.

Source code in cridlib/lib.py 
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class CRIDMissingMediaFragmentError(CRIDError):
    """Missing media-fragment with clock code."""

CRIDSchemeAuthorityMismatchError

Bases: CRIDError

Hostname part of URI does not match 'rabe.ch'.

Source code in cridlib/lib.py 
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class CRIDSchemeAuthorityMismatchError(CRIDError):
    """Hostname part of URI does not match 'rabe.ch'."""

CRIDSchemeMismatchError

Bases: CRIDError

Scheme in URI does not match 'crid'.

Source code in cridlib/lib.py 
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class CRIDSchemeMismatchError(CRIDError):
    """Scheme in URI does not match 'crid'."""

CRIDUnsupportedVersionError

Bases: CRIDError

Unsupported version in path of URI.

Source code in cridlib/lib.py 
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class CRIDUnsupportedVersionError(CRIDError):
    """Unsupported version in path of URI."""

canonicalize_show(show)

Get the slug for a show.

Uses python-slugify.

show: Name of show with non-ascii chars.

slugified show name.
Source code in cridlib/lib.py 
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def canonicalize_show(show: str) -> str:
    """Get the slug for a show.

    Uses [python-slugify](https://github.com/un33k/python-slugify).

    Args:
    ----
        show: Name of show with non-ascii chars.

    Returns:
    -------
        slugified show name.

    """
    return slugify(show)