style

[librarian.git] / librarian / picture.py

diff --git a/librarian/picture.py b/librarian/picture.py
index 70b372f..b665a34 100644 (file)
--- a/librarian/picture.py
+++ b/librarian/picture.py
@@ -1,5 +1,5 @@
-
-from dcparser import (as_person, as_date, Field, WorkInfo, DCNS)
+# -*- coding: utf-8 -*-
+from dcparser import Field, WorkInfo, DCNS
 from librarian import (RDFNS, ValidationError, NoDublinCore, ParseError, WLURI)
 from xml.parsers.expat import ExpatError
 from os import path
@@ -10,19 +10,16 @@ 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}))?/?$')
-
-    def __init__(self, *args, **kw):
-        super(WLPictureURI, self).__init__(*args, **kw)
+    _re_wl_uri = re.compile('http://wolnelektury.pl/katalog/obraz/(?P<slug>[-a-z0-9]+)/?$')
 
     @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
+
+def as_wlpictureuri_strict(text):
+    return WLPictureURI.strict(text)
 
 
 class PictureInfo(WorkInfo):
@@ -35,23 +32,19 @@ class PictureInfo(WorkInfo):
         Field(DCNS('subject.type'), 'kinds', salias='kind', multiple=True),
 
         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),
-        )
-
-    def validate(self):
-        """
-        WorkInfo has a language validation code only, which we do not need.
-        """
-        pass
+        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']
+    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',
@@ -60,7 +53,7 @@ class ImageStore(object):
 
     def __init__(self, dir_):
         self.dir = dir_
-        return super(ImageStore, self).__init__()
+        super(ImageStore, self).__init__()
 
     def path(self, slug, mime_type):
         """
@@ -101,20 +94,16 @@ class WLPicture(object):
         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')
+            xmlfile = open(xmlfile, 'rb')
             try:
-                data = file.read()
+                data = xmlfile.read()
             finally:
-                file.close()
+                xmlfile.close()
         else:
             data = xmlfile.read()
 
@@ -128,7 +117,7 @@ class WLPicture(object):
             image_store = ImageStore(path.dirname(xmlfile.name))
 
         try:
-            parser = etree.XMLParser(remove_blank_text=False)
+            parser = etree.XMLParser()
             tree = etree.parse(StringIO(data.encode('utf-8')), parser)
 
             return cls(tree, parse_dublincore=parse_dublincore, image_store=image_store)
@@ -153,3 +142,25 @@ class WLPicture(object):
 
     def image_file(self, *args, **kwargs):
         return open(self.image_path, *args, **kwargs)
+
+    def partiter(self):
+        """
+        Iterates the parts of this picture and returns them and their metadata
+        """
+        for part in self.edoc.iter("div"):
+            pd = {'themes': [], 'object': None, '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'))))
+
+            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')
+            yield pd