class WLURI(object):
- """Represents a WL URI. Extracts slug and language from it."""
- DEFAULT_LANGUAGE = u'pol'
-
+ """Represents a WL URI. Extracts slug from it."""
slug = None
- language = None
example = 'http://wolnelektury.pl/katalog/lektura/template/'
_re_wl_uri = re.compile('http://wolnelektury.pl/katalog/lektura/'
- '(?P<slug>[-a-z0-9]+)(/(?P<lang>[a-z]{3}))?/?$')
-
- def __init__(self, uri=None):
- if uri is not None:
- uri = unicode(uri)
- self.uri = uri
- match = self._re_wl_uri.match(uri)
- if not match:
- raise ValueError('Supplied URI (%s) does not match '
- 'the WL document URI template.' % uri)
- self.slug = match.group('slug')
- self.language = match.group('lang') or self.DEFAULT_LANGUAGE
+ '(?P<slug>[-a-z0-9]+)/?$')
+
+ def __init__(self, uri):
+ uri = unicode(uri)
+ self.uri = uri
+ self.slug = uri.rstrip('/').rsplit('/', 1)[-1]
+
+ @classmethod
+ def strict(cls, uri):
+ match = cls._re_wl_uri.match(uri)
+ if not match:
+ raise ValueError('Supplied URI (%s) does not match '
+ 'the template: %s.' % (uri, cls._re_wl_uri))
+ return cls(uri)
@classmethod
- def from_slug_and_lang(cls, slug, lang):
- """Contructs an URI from slug and language code.
+ def from_slug(cls, slug):
+ """Contructs an URI from slug.
- >>> WLURI.from_slug_and_lang('a-slug', WLURI.DEFAULT_LANGUAGE).uri
+ >>> WLURI.from_slug('a-slug').uri
u'http://wolnelektury.pl/katalog/lektura/a-slug/'
- >>> WLURI.from_slug_and_lang('a-slug', 'deu').uri
- u'http://wolnelektury.pl/katalog/lektura/a-slug/deu/'
"""
- if lang is None:
- lang = cls.DEFAULT_LANGUAGE
uri = 'http://wolnelektury.pl/katalog/lektura/%s/' % slug
- if lang is not None and lang != cls.DEFAULT_LANGUAGE:
- uri += lang + '/'
return cls(uri)
def __unicode__(self):
return self.uri
def __eq__(self, other):
- return self.slug, self.language == other.slug, other.language
-
- def filename_stem(self):
- stem = self.slug
- if self.language != self.DEFAULT_LANGUAGE:
- stem += '_' + self.language
- return stem
-
- def validate_language(self, language):
- if language != self.language:
- raise ValidationError("Incorrect language definition in URI")
+ return self.slug == other.slug
class DocProvider(object):
Used for generating joined files, like EPUBs.
"""
- def by_slug_and_lang(self, slug, lang=None):
- """Should return a file-like object with a WL document XML."""
- raise NotImplementedError
-
def by_slug(self, slug):
"""Should return a file-like object with a WL document XML."""
- return self.by_slug_and_lang(slug)
+ raise NotImplementedError
def by_uri(self, uri, wluri=WLURI):
"""Should return a file-like object with a WL document XML."""
wluri = wluri(uri)
- return self.by_slug_and_lang(wluri.slug, wluri.language)
+ return self.by_slug(wluri.slug)
class DirDocProvider(DocProvider):
self.dir = dir_
self.files = {}
- def by_slug_and_lang(self, slug, lang=None):
- fname = WLURI.from_slug_and_lang(slug, lang).filename_stem() + '.xml'
+ def by_slug(self, slug):
+ fname = slug + '.xml'
return open(os.path.join(self.dir, fname))
DCNS('subject.type'): [u'Unknown'],
DCNS('subject.genre'): [u'Unknown'],
DCNS('date'): ['1970-01-01'],
- DCNS('language'): [WLURI.DEFAULT_LANGUAGE],
+ DCNS('language'): [u'pol'],
# DCNS('date'): [creation_date],
DCNS('publisher'): [u"Fundacja Nowoczesna Polska"],
DCNS('description'):
except ValueError, e:
raise ValueError("Unrecognized date format. Try YYYY-MM-DD or YYYY.")
-def as_person(text):
- return Person.from_text(text)
+as_person = Person.from_text
def as_unicode(text):
if isinstance(text, unicode):
return text.decode('utf-8')
class Field(object):
- def __init__(self, uri, attr_name, type=as_unicode, multiple=False, salias=None, **kwargs):
+ def __init__(self, uri, attr_name, validator=as_unicode, strict=None, multiple=False, salias=None, **kwargs):
self.uri = uri
self.name = attr_name
- self.validator = type
+ self.validator = lambda x: validator(x)
+ self.strict = lambda x: strict(x)
self.multiple = multiple
self.salias = salias
self.required = kwargs.get('required', True) and not kwargs.has_key('default')
self.default = kwargs.get('default', [] if multiple else [None])
- def validate_value(self, val):
+ def validate_value(self, val, strict=False):
+ if strict and self.strict is not None:
+ validator = self.strict
+ else:
+ validator = self.validator
try:
if self.multiple:
- if self.validator is None:
+ if validator is None:
return val
- return [ self.validator(v) if v is not None else v for v in val ]
+ return [ validator(v) if v is not None else v for v in val ]
elif len(val) > 1:
raise ValidationError("Multiple values not allowed for field '%s'" % self.uri)
elif len(val) == 0:
raise ValidationError("Field %s has no value to assign. Check your defaults." % self.uri)
else:
- if self.validator is None or val[0] is None:
+ if validator is None or val[0] is None:
return val[0]
- return self.validator(val[0])
+ return validator(val[0])
except ValueError, e:
raise ValidationError("Field '%s' - invald value: %s" % (self.uri, e.message))
- def validate(self, fdict):
+ def validate(self, fdict, strict=False):
if not fdict.has_key(self.uri):
if not self.required:
f = self.default
else:
f = fdict[self.uri]
- return self.validate_value(f)
+ return self.validate_value(f, strict=strict)
def __eq__(self, other):
if isinstance(other, Field) and other.name == self.name:
Field( DCNS('source'), 'source_name', required=False),
Field( DCNS('source.URL'), 'source_url', required=False),
- Field( DCNS('identifier.url'), 'url', WLURI),
+ Field( DCNS('identifier.url'), 'url', WLURI, strict=WLURI.strict),
Field( DCNS('rights.license'), 'license', required=False),
Field( DCNS('rights'), 'license_description'),
)
@classmethod
- def from_string(cls, xml):
+ def from_string(cls, xml, *args, **kwargs):
from StringIO import StringIO
- return cls.from_file(StringIO(xml))
+ return cls.from_file(StringIO(xml), *args, **kwargs)
@classmethod
- def from_file(cls, xmlfile):
+ def from_file(cls, xmlfile, *args, **kwargs):
desc_tag = None
try:
iter = etree.iterparse(xmlfile, ['start', 'end'])
# if there is no end, Expat should yell at us with an ExpatError
# extract data from the element and make the info
- return cls.from_element(desc_tag)
+ return cls.from_element(desc_tag, *args, **kwargs)
except XMLSyntaxError, e:
raise ParseError(e)
except ExpatError, e:
raise ParseError(e)
@classmethod
- def from_element(cls, rdf_tag):
+ def from_element(cls, rdf_tag, *args, **kwargs):
# the tree is already parsed, so we don't need to worry about Expat errors
field_dict = {}
desc = rdf_tag.find(".//" + RDFNS('Description'))
fv.append(e.text)
field_dict[e.tag] = fv
- return cls(desc.attrib, field_dict)
+ return cls(desc.attrib, field_dict, *args, **kwargs)
- def __init__(self, rdf_attrs, dc_fields):
+ def __init__(self, rdf_attrs, dc_fields, strict=False):
"""rdf_attrs should be a dictionary-like object with any attributes of the RDF:Description.
dc_fields - dictionary mapping DC fields (with namespace) to list of text values for the
given field. """
self.fmap = {}
for field in self.FIELDS:
- value = field.validate( dc_fields )
+ value = field.validate(dc_fields, strict=strict)
setattr(self, 'prop_' + field.name, value)
self.fmap[field.name] = field
if field.salias: self.fmap[field.salias] = field
- self.validate()
-
- def validate(self):
- self.url.validate_language(self.language)
-
def __getattribute__(self, name):
try:
field = object.__getattribute__(self, 'fmap')[name]
Field( DCNS('contributor.translator'), 'translators', \
as_person, salias='translator', multiple=True, default=[]),
- Field( DCNS('relation.hasPart'), 'parts', WLURI, multiple=True, required=False),
+ Field( DCNS('relation.hasPart'), 'parts',
+ WLURI, strict=WLURI.strict, multiple=True, required=False),
+ Field( DCNS('relation.isVariantOf'), 'variant_of',
+ WLURI, strict=WLURI.strict, required=False),
Field( DCNS('relation.cover_image.url'), 'cover_url', required=False),
Field( DCNS('relation.cover_image.attribution'), 'cover_by', required=False),
class WLPictureURI(WLURI):
_re_wl_uri = re.compile('http://wolnelektury.pl/katalog/obraz/'
- '(?P<slug>[-a-z0-9]+)(/(?P<lang>[a-z]{3}))?/?$')
-
- def __init__(self, *args, **kw):
- super(WLPictureURI, self).__init__(*args, **kw)
+ '(?P<slug>[-a-z0-9]+)/?$')
@classmethod
- def from_slug_and_lang(cls, slug, lang):
+ def from_slug(cls, slug):
uri = 'http://wolnelektury.pl/katalog/obraz/%s/' % slug
return cls(uri)
- def filename_stem(self):
- return self.slug
-
class PictureInfo(WorkInfo):
"""
Field(DCNS('description.medium'), 'medium', required=False),
Field(DCNS('description.dimensions'), 'original_dimensions', required=False),
Field(DCNS('format'), 'mime_type', required=False),
- Field(DCNS('identifier.url'), 'url', WLPictureURI),
+ Field(DCNS('identifier.url'), 'url', WLPictureURI, strict=WLPictureURI.strict),
)
- def validate(self):
- """
- WorkInfo has a language validation code only, which we do not need.
- """
- pass
-
class ImageStore(object):
EXT = ['gif', 'jpeg', 'png', 'swf', 'psd', 'bmp'
fnp / librarian.git / commitdiff