"""Should return a file-like object with a WL document XML."""
return self.by_slug_and_lang(slug)
- def by_uri(self, uri):
+ def by_uri(self, uri, wluri=WLURI):
"""Should return a file-like object with a WL document XML."""
- wluri = WLURI(uri)
+ wluri = wluri(uri)
return self.by_slug_and_lang(wluri.slug, wluri.language)
return self.validate_value(f)
+ def __eq__(self, other):
+ if isinstance(other, Field) and other.name == self.name:
+ return True
+ return False
+class DCInfo(type):
+ def __new__(meta, classname, bases, class_dict):
+ fields = class_dict['FIELDS']
+
+ for base in bases[::-1]:
+ if hasattr(base, 'FIELDS'):
+ for field in base.FIELDS[::-1]:
+ try:
+ fields.index(field)
+ except ValueError:
+ fields = (field,) + fields
+
+ class_dict['FIELDS'] = fields
+ return super(DCInfo, meta).__new__(meta, classname, bases, class_dict)
+
+
+class WorkInfo(object):
+ __metaclass__ = DCInfo
-class BookInfo(object):
FIELDS = (
Field( DCNS('creator'), 'author', as_person),
Field( DCNS('title'), 'title'),
+ Field( DCNS('type'), 'type', required=False, multiple=True),
+
Field( DCNS('subject.period'), 'epochs', salias='epoch', multiple=True),
Field( DCNS('subject.type'), 'kinds', salias='kind', multiple=True),
Field( DCNS('subject.genre'), 'genres', salias='genre', multiple=True),
- Field( DCNS('audience'), 'audiences', salias='audience', multiple=True,
- required=False),
+
Field( DCNS('date'), 'created_at', as_date),
Field( DCNS('date.pd'), 'released_to_public_domain_at', as_date, required=False),
- Field( DCNS('contributor.editor'), 'editors', \
- as_person, salias='editor', multiple=True, default=[]),
- Field( DCNS('contributor.translator'), 'translators', \
- as_person, salias='translator', multiple=True, default=[]),
- Field( DCNS('contributor.technical_editor'), 'technical_editors',
- as_person, salias='technical_editor', multiple=True, default=[]),
Field( DCNS('publisher'), 'publisher'),
+
Field( DCNS('source'), 'source_name', required=False),
Field( DCNS('source.URL'), 'source_url', required=False),
Field( DCNS('identifier.url'), 'url', WLURI),
- Field( DCNS('relation.hasPart'), 'parts', WLURI, multiple=True, required=False),
- Field( DCNS('rights.license'), 'license', required=False),
- Field( DCNS('rights'), 'license_description'),
- Field( DCNS('language'), 'language'),
- Field( DCNS('description'), 'description', required=False),
- )
+ )
@classmethod
def from_string(cls, xml):
def from_element(cls, rdf_tag):
# the tree is already parsed, so we don't need to worry about Expat errors
field_dict = {}
- desc = rdf_tag.find(".//" + RDFNS('Description') )
+ desc = rdf_tag.find(".//" + RDFNS('Description'))
if desc is None:
raise NoDublinCore("No DublinCore section found.")
fv.append(e.text)
field_dict[e.tag] = fv
- return cls( desc.attrib, field_dict )
+ return cls(desc.attrib, field_dict)
def __init__(self, rdf_attrs, dc_fields):
"""rdf_attrs should be a dictionary-like object with any attributes of the RDF:Description.
return root
-
def serialize(self):
rdf = {}
rdf['about'] = { 'uri': RDFNS('about'), 'value': self.about }
return result
-def parse(file_name):
- return BookInfo.from_file(file_name)
+
+class BookInfo(WorkInfo):
+ FIELDS = (
+ Field( DCNS('audience'), 'audiences', salias='audience', multiple=True,
+ required=False),
+ Field( DCNS('contributor.editor'), 'editors', \
+ as_person, salias='editor', multiple=True, default=[]),
+ Field( DCNS('contributor.translator'), 'translators', \
+ as_person, salias='translator', multiple=True, default=[]),
+ Field( DCNS('contributor.technical_editor'), 'technical_editors',
+ as_person, salias='technical_editor', multiple=True, default=[]),
+ Field( DCNS('relation.hasPart'), 'parts', WLURI, multiple=True, required=False),
+ Field( DCNS('rights.license'), 'license', required=False),
+ Field( DCNS('rights'), 'license_description'),
+ Field( DCNS('language'), 'language'),
+ Field( DCNS('description'), 'description', required=False),
+ )
+
+
+def parse(file_name, cls=BookInfo):
+ return cls.from_file(file_name)
--- /dev/null
+
+from dcparser import (as_person, as_date, Field, WorkInfo, DCNS)
+from librarian import (RDFNS, ValidationError, NoDublinCore, ParseError, WLURI)
+from xml.parsers.expat import ExpatError
+from os import path
+from StringIO import StringIO
+from lxml import etree
+from lxml.etree import (XMLSyntaxError, XSLTApplyError)
+import re
+
+
+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)
+
+ @classmethod
+ def from_slug_and_lang(cls, slug, lang):
+ uri = 'http://wolnelektury.pl/katalog/obraz/%s/' % slug
+ return cls(uri)
+
+ def filename_stem(self):
+ return self.slug
+
+
+class PictureInfo(WorkInfo):
+ """
+ Dublin core metadata for a picture
+ """
+ FIELDS = (
+ Field(DCNS('format.dimensions.digital'), 'dimensions', required=False),
+ Field(DCNS('format.dimensions.original'), 'dimensions_original', required=False),
+ Field(DCNS('format.physical'), 'physical', required=False),
+ Field(DCNS('format'), 'mime_type', required=False),
+ Field(DCNS('identifier.url'), 'url', WLPictureURI),
+ )
+
+ 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'
+ 'tiff', 'tiff', 'jpc', 'jp2', 'jpf', 'jb2', 'swc',
+ 'aiff', 'wbmp', 'xbm']
+ MIME = ['image/gif', 'image/jpeg', 'image/png',
+ 'application/x-shockwave-flash', 'image/psd', 'image/bmp',
+ 'image/tiff', 'image/tiff', 'application/octet-stream',
+ 'image/jp2', 'application/octet-stream', 'application/octet-stream',
+ 'application/x-shockwave-flash', 'image/iff', 'image/vnd.wap.wbmp', 'image/xbm']
+
+ def __init__(self, dir_):
+ self.dir = dir_
+ return super(ImageStore, self).__init__()
+
+ def path(self, slug, mime_type):
+ """
+ Finds file by slug and mime type in our iamge store.
+ Returns a file objects (perhaps should return a filename?)
+ """
+ try:
+ i = self.MIME.index(mime_type)
+ except ValueError:
+ err = ValueError("Picture %s has unknown mime type: %s" % (slug, mime_type))
+ err.slug = slug
+ err.mime_type = mime_type
+ raise err
+ ext = self.EXT[i]
+ # add some common extensions tiff->tif, jpeg->jpg
+ return path.join(self.dir, slug + '.' + ext)
+
+
+class WLPicture(object):
+ def __init__(self, edoc, parse_dublincore=True, image_store=None):
+ self.edoc = edoc
+ self.image_store = image_store
+
+ root_elem = edoc.getroot()
+
+ dc_path = './/' + RDFNS('RDF')
+
+ if root_elem.tag != 'picture':
+ raise ValidationError("Invalid root element. Found '%s', should be 'picture'" % root_elem.tag)
+
+ if parse_dublincore:
+ self.rdf_elem = root_elem.find(dc_path)
+
+ if self.rdf_elem is None:
+ raise NoDublinCore('Document has no DublinCore - which is required.')
+
+ self.picture_info = PictureInfo.from_element(self.rdf_elem)
+ else:
+ self.picture_info = None
+
+ @classmethod
+ def from_string(cls, xml, *args, **kwargs):
+ return cls.from_file(StringIO(xml), *args, **kwargs)
+
+ @classmethod
+ def from_file(cls, xmlfile, parse_dublincore=True, image_store=None):
+
+ # first, prepare for parsing
+ if isinstance(xmlfile, basestring):
+ file = open(xmlfile, 'rb')
+ try:
+ data = file.read()
+ finally:
+ file.close()
+ else:
+ data = xmlfile.read()
+
+ if not isinstance(data, unicode):
+ data = data.decode('utf-8')
+
+ data = data.replace(u'\ufeff', '')
+
+ # assume images are in the same directory
+ if image_store is None and xmlfile.name is not None:
+ image_store = ImageStore(path.dirname(xmlfile.name))
+
+ try:
+ parser = etree.XMLParser(remove_blank_text=False)
+ tree = etree.parse(StringIO(data.encode('utf-8')), parser)
+
+ return cls(tree, parse_dublincore=parse_dublincore, image_store=image_store)
+ except (ExpatError, XMLSyntaxError, XSLTApplyError), e:
+ raise ParseError(e)
+
+ @property
+ def mime_type(self):
+ if self.picture_info is None:
+ raise ValueError('DC is not loaded, hence we don\'t know the image type')
+ return self.picture_info.mime_type
+
+ @property
+ def slug(self):
+ return self.picture_info.url.slug
+
+ @property
+ def image_path(self):
+ if self.image_store is None:
+ raise ValueError("No image store associated with whis WLPicture.")
+ return self.image_store.path(self.slug, self.mime_type)
+
+ def image_file(self, *args, **kwargs):
+ return open(self.image_path, *args, **kwargs)
--- /dev/null
+<picture>
+ <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
+ <rdf:Description rdf:about="http://wiki.wolnepodreczniki.pl/Lektury:Andersen/Brzydkie_kaczątko">
+ <dc:creator xml:lang="pl">Klee, Paul</dc:creator>
+ <dc:title xml:lang="la">Angelus Novus</dc:title>
+ <dc:publisher xml:lang="pl">Fundacja Nowoczesna Polska</dc:publisher>
+ <dc:subject.period xml:lang="pl">Modernizm</dc:subject.period>
+ <dc:subject.type xml:lang="pl">Obraz</dc:subject.type>
+ <dc:subject.genre xml:lang="pl">Akwarela</dc:subject.genre>
+ <dc:description xml:lang="pl">Publikacja zrealizowana w ramach projektu Wolne Lektury (http://wolnelektury.pl). Reprodukcja cyfrowa wykonana przez Bibliotekę Narodową z egzemplarza pochodzącego ze zbiorów BN.</dc:description>
+ <dc:identifier.url xml:lang="pl">http://wolnelektury.pl/katalog/obraz/angelus-novus</dc:identifier.url>
+ <dc:source.URL xml:lang="pl">http://katilifox.files.wordpress.com/2011/04/1190051611_angelus-novus.jpg</dc:source.URL>
+ <dc:source xml:lang="pl"></dc:source>
+ <dc:rights xml:lang="pl">Domena publiczna - Paul Klee zm. 1940</dc:rights>
+ <dc:date.pd xml:lang="pl">1940</dc:date.pd>
+ <dc:type>Image</dc:type>
+ <dc:format xml:lang="pl">image/png</dc:format>
+ <dc:format.dimensions.digital xml:lang="pl">1645 x 2000 px</dc:format.dimensions.digital>
+ <dc:format.dimensions.original xml:lang="pl">31.8 × 24.2 cm</dc:format.dimensions.original>
+ <dc:format.physical xml:lang="pl">Akwarela na papierze</dc:format.physical>
+ <dc:date xml:lang="pl">1920</dc:date>
+ </rdf:Description>
+ </rdf:RDF>
+
+ <sem type="motif" motif="anioł historii">
+ <div type="area" x1="462" y1="212" x2="1283" y2="1730"/>
+ </sem>
+ <sem type="motif" motif="spojrzenie">
+ <div type="area" x1="688" y1="500" x2="1054" y2="618"/>
+ </sem>
+ <sem type="motif" motif="skrzydło">
+ <div type="area" x1="468" y1="741" x2="694" y2="1027"/>
+ <div type="area" x1="1044" y1="762" x2="1260" y2="1041"/>
+ </sem>
+
+</picture>
--- /dev/null
+# -*- coding: utf-8 -*-
+#
+# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+from librarian import picture, dcparser
+from lxml import etree
+from nose.tools import *
+from os.path import splitext
+from tests.utils import get_all_fixtures, get_fixture
+import codecs
+from os import path
+
+def test_wlpictureuri():
+ uri = picture.WLPictureURI('http://wolnelektury.pl/katalog/obraz/angelus-novus')
+
+def check_load(xml_file):
+ pi = dcparser.parse(xml_file, picture.PictureInfo)
+ assert pi is not None
+ assert isinstance(pi, picture.PictureInfo)
+
+
+def test_load():
+ for fixture in get_all_fixtures('picture', '*.xml'):
+ yield check_load, fixture
+
+
+def test_wlpicture():
+ wlp = picture.WLPicture.from_file(open(get_fixture('picture', 'angelus-novus.xml')))
+ pi = wlp.picture_info
+
+ # from nose.tools import set_trace; set_trace()
+ assert pi.type[0] == u"Image"
+ assert pi.mime_type == u'image/png' == wlp.mime_type
+ assert wlp.slug == 'angelus-novus'
+
+ assert path.exists(wlp.image_path)
+
+ f = wlp.image_file('r')
+ f.close()
fnp / librarian.git / commitdiff
