+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
-from dcparser import (as_person, as_date, Field, WorkInfo, DCNS)
+from operator import and_
+
+from .dcparser import 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)
+from lxml.etree import (XMLSyntaxError, XSLTApplyError, Element)
import re
+import six
class WLPictureURI(WLURI):
- _re_wl_uri = re.compile('http://wolnelektury.pl/katalog/obraz/'
- '(?P<slug>[-a-z0-9]+)/?$')
+ _re_wl_uri = re.compile('http://wolnelektury.pl/katalog/obraz/(?P<slug>[-a-z0-9]+)/?$')
@classmethod
def from_slug(cls, slug):
return cls(uri)
+def as_wlpictureuri_strict(text):
+ return WLPictureURI.strict(text)
+
+
class PictureInfo(WorkInfo):
"""
Dublin core metadata for a picture
Field(DCNS('language'), 'language', required=False),
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, required=False),
+ Field(DCNS('subject.style'), 'styles', salias='style', multiple=True, required=False),
Field(DCNS('format.dimensions'), 'dimensions', required=False),
Field(DCNS('format.checksum.sha1'), 'sha1', required=True),
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, strict=WLPictureURI.strict),
- )
+ Field(DCNS('identifier.url'), 'url', WLPictureURI, strict=as_wlpictureuri_strict)
+ )
class ImageStore(object):
EXT = ['gif', 'jpeg', 'png', 'swf', 'psd', 'bmp'
- 'tiff', 'tiff', 'jpc', 'jp2', 'jpf', 'jb2', 'swc',
- 'aiff', 'wbmp', 'xbm']
+ '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',
'application/x-shockwave-flash', 'image/iff', 'image/vnd.wap.wbmp', 'image/xbm']
def __init__(self, dir_):
+ super(ImageStore, self).__init__()
self.dir = dir_
- return super(ImageStore, self).__init__()
def path(self, slug, mime_type):
"""
self.picture_info = PictureInfo.from_element(self.rdf_elem)
else:
self.picture_info = None
+ self.frame = None
@classmethod
- def from_string(cls, xml, *args, **kwargs):
- return cls.from_file(StringIO(xml), *args, **kwargs)
+ def from_bytes(cls, xml, *args, **kwargs):
+ return cls.from_file(six.BytesIO(xml), *args, **kwargs)
@classmethod
def from_file(cls, xmlfile, parse_dublincore=True, image_store=None):
# first, prepare for parsing
- if isinstance(xmlfile, basestring):
+ if isinstance(xmlfile, six.text_type):
file = open(xmlfile, 'rb')
try:
data = file.read()
else:
data = xmlfile.read()
- if not isinstance(data, unicode):
+ if not isinstance(data, six.text_type):
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:
+ if image_store is None and getattr(xmlfile, 'name', 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)
+ tree = etree.parse(six.BytesIO(data.encode('utf-8')), parser)
- return cls(tree, parse_dublincore=parse_dublincore, image_store=image_store)
- except (ExpatError, XMLSyntaxError, XSLTApplyError), e:
+ me = cls(tree, parse_dublincore=parse_dublincore, image_store=image_store)
+ me.load_frame_info()
+ return me
+ except (ExpatError, XMLSyntaxError, XSLTApplyError) as e:
raise ParseError(e)
@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)
+ def get_sem_coords(self, sem):
+ area = sem.find("div[@type='rect']")
+ if area is None:
+ area = sem.find("div[@type='whole']")
+ return [[0, 0], [-1, -1]]
+
+ def has_all_props(node, props):
+ return reduce(and_, map(lambda prop: prop in node.attrib, props))
+
+ if not has_all_props(area, ['x1', 'x2', 'y1', 'y2']):
+ return None
+
+ def n(prop): return int(area.get(prop))
+ return [[n('x1'), n('y1')], [n('x2'), n('y2')]]
+
def partiter(self):
"""
Iterates the parts of this picture and returns them and their metadata
"""
- for part in self.edoc.iter("div"):
- pd = {}
- pd['type'] = part.get('type')
- if pd['type'] == 'area':
- pd['coords'] = ((int(part.get('x1')), int(part.get('y1'))),
- (int(part.get('x2')), int(part.get('y2'))))
-
- pd['themes'] = []
- pd['object'] = None
- parent = part
- while True:
- parent = parent.getparent()
- if parent is None:
- break
- if parent.tag == 'sem':
- if parent.get('type') == 'theme':
- pd['themes'] += map(unicode.strip, unicode(parent.get('theme')).split(','))
- elif parent.get('type') == 'object' and pd['object'] is None:
- pd['object'] = parent.get('object')
+ # omg no support for //sem[(@type='theme') or (@type='object')] ?
+ for part in list(self.edoc.iterfind("//sem[@type='theme']")) +\
+ list(self.edoc.iterfind("//sem[@type='object']")):
+ pd = {'type': part.get('type')}
+
+ coords = self.get_sem_coords(part)
+ if coords is None:
+ continue
+ pd['coords'] = coords
+
+ def want_unicode(x):
+ if not isinstance(x, six.text_type):
+ return x.decode('utf-8')
+ else:
+ return x
+ pd['object'] = part.attrib['type'] == 'object' and want_unicode(part.attrib.get('object', u'')) or None
+ pd['themes'] = part.attrib['type'] == 'theme' and [part.attrib.get('theme', u'')] or []
yield pd
+
+ def load_frame_info(self):
+ k = self.edoc.find("//sem[@object='kadr']")
+
+ if k is not None:
+ clip = self.get_sem_coords(k)
+ self.frame = clip
+ frm = Element("sem", {"type": "frame"})
+ frm.append(k.iter("div").next())
+ self.edoc.getroot().append(frm)
+ k.getparent().remove(k)
+ else:
+ frm = self.edoc.find("//sem[@type='frame']")
+ if frm:
+ self.frame = self.get_sem_coords(frm)
+ else:
+ self.frame = None
+ return self
fnp / librarian.git / blobdiff