From a83d819b8b9cc67d4a874b3aba8924cf8f22dbeb Mon Sep 17 00:00:00 2001
From: Lars-Dominik Braun <lars@6xq.net>
Date: Fri, 9 Sep 2016 19:24:54 +0200
Subject: Improve bibliography rendering

---
 formatRefs.py | 108 ++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 83 insertions(+), 25 deletions(-)

diff --git a/formatRefs.py b/formatRefs.py
index b6e0be3..4da52c6 100755
--- a/formatRefs.py
+++ b/formatRefs.py
@@ -4,6 +4,7 @@ from rdflib import URIRef, BNode, Literal, Graph, Namespace
 from rdflib.namespace import RDF, NamespaceManager
 from urllib.parse import urlparse
 import sys
+from itertools import chain
 
 def first (it):
     try:
@@ -34,44 +35,101 @@ def formatPerson (s, g, n):
         return familyname
 
 def formatParent (s, g, n):
-    parent = first (g.objects (n, s.isPartOf))
-    parentname = first (g.objects (parent, s.name)) if parent else None
-    volume = first (g.objects (n, s.volumeNumber))
-    ret = ''
+    ret = []
+
+    parentname = first (g.objects (n, s.name))
     if parentname:
-        ret += '{}'.format (parentname)
-        if volume:
-            ret += ', volume {}'.format (volume)
-        issue = first (g.objects (parent, s.issueNumber))
-        if issue:
-            ret += ', issue {}'.format (issue)
-    return ret
+        ret.append (parentname)
+
+    volume = first (g.objects (n, s.volumeNumber))
+    if volume:
+        ret.append ('volume {}'.format (volume))
+
+    issue = first (g.objects (n, s.issueNumber))
+    if issue:
+        ret.append ('issue {}'.format (issue))
+
+    return ', '.join (ret)
+
+def relUri (base, u):
+    if u.startswith (base):
+        return u[len (base):]
+    else:
+        return u
+
+def hideLocalUri (base, l):
+    """
+    Show local uris only iff no other sources are available
+    """
+    l = list (l)
+    notLocal = list (filter (lambda u: relUri (base, u) == u, l))
+    return notLocal or l
+
+def getRecursive (s, g, n, predicate):
+    """
+    Look for predicate in n and all Things it is a part of until it is found
+    """
+    res = g.objects (n, predicate)
+    if res:
+        yield from res
+    parents = g.objects (n, s.isPartOf)
+    for p in parents:
+        yield from getRecursive (s, g, p, predicate)
+
+def getRecursiveAll (s, g, n, predicate):
+    parents = list (g.objects (n, predicate))
+    yield from parents
+    for p in parents:
+        yield from getRecursiveAll (s, g, p, predicate)
 
 if __name__ == '__main__':
     g = Graph()
     result = g.parse ("index.ttl", format='turtle')
+    rootUri = sys.argv[1]
+    rootNode = URIRef (rootUri)
     s = Namespace("https://schema.org/")
-    for ref in result.objects (predicate=s.citation):
+    for ref in result.objects (rootNode, s.citation):
         t = list (g.objects (ref, RDF.type))
         assert len (t) == 1
         t = t[0]
 
-        name = first (g.objects (ref, s.name))
-        authors = humanList ([formatPerson (s, g, author) for author in g.objects (ref, s.author)])
-        published = first (g.objects (ref, s.datePublished ))
+        # object _must_ have a name
+        what = first (g.objects (ref, s.name))
+
+        # look for people who wrote/translated/edited it
+        who = map (lambda a: formatPerson (s, g, a), getRecursive (s, g, ref, s.author))
+        #who = chain (who, map (lambda a: formatPerson (s, g, a) + ' (ed.)', getRecursive (s, g, ref, s.editor)))
+        #who = chain (who, map (lambda a: formatPerson (s, g, a) + ' (trans.)', getRecursive (s, g, ref, s.translator)))
+        who = humanList (list (who))
+
+        # when was it published?
+        when = first (getRecursive (s, g, ref, s.datePublished))
+
+        # where can we find it? (print)
+        # print from root to ref (i.e. magazine, volume, issue)
+        parents = reversed (list (getRecursiveAll (s, g, ref, s.isPartOf)))
+        where = [formatParent (s, g, p) for  p in parents]
+
+        # where can we find it? (online)
+        urls = hideLocalUri (rootUri, g.objects (ref, s.url))
+        urls = ['`{} <{}>`__'.format (formatDomain (url), relUri (rootUri, url)) for url in urls]
+
         refname = urlparse (ref).fragment
         if not refname:
             refname = first (g.objects (ref, s.alternateName))
-        ret = '.. [{}]'.format (refname)
-        if authors:
-            ret += ' {}:'.format (authors)
-        ret += ' *{}*.'.format (name)
-        parent = formatParent (s, g, ref)
-        if parent:
-            ret += ' {}.'.format (parent)
-        if published:
-            ret += ' {}.'.format (published)
-        urls = ['`{} <{}>`__'.format (formatDomain (url), url) for url in g.objects (ref, s.url)]
+        ret = '.. [{}] \\ '.format (refname)
+
+        if who:
+            ret += ' {}:'.format (who)
+
+        ret += ' *{}*.'.format (what)
+
+        if where:
+            ret += ' {}.'.format (', '.join (where))
+
+        if when:
+            ret += ' {}.'.format (when)
+
         if urls:
             ret += ' {}.'.format (', '.join (urls))
         print (ret)
-- 
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