nooverlap avverte per sovrapposizioni indesiderate

se imposti le preferenze di non sovrapposizione sul campo "nooverlap",
quello ti avverte.

Fa sto gioco anche per il campo "contacts", ma ovviamente i contatti lì
vanno elencati tutti precisi e scritti uguale sennò non funziona.

plugins/talks.py

@@ -115,6 +115,7 @@ def get_talk_data(talkname):
         return None
     try:
         gridstep = pelican.settings['TALKS_GRID_STEP']
+        data.setdefault('nooverlap', [])
         if 'title' not in data:
             logging.warn("Talk <{}> has no `title` field".format(talkname))
             data['title'] = talkname
@@ -169,6 +170,45 @@ def get_talk_data(talkname):
         raise
 
 
+def overlap(interval_a, interval_b):
+    '''how many minutes do they overlap?'''
+    return max(0, min(interval_a[1], interval_b[1]) - max(interval_a[0], interval_b[0]))
+
+
+def get_talk_overlaps(name):
+    data = get_talk_data(name)
+    overlapping_talks = set()
+    if 'time' not in data:
+        return overlapping_talks
+    start = int(data['time'].strftime('%s'))
+    end = start + data['duration'] * 60
+    for other in get_talk_names():
+        if other == name:
+            continue
+        if 'time' not in get_talk_data(other):
+            continue
+        other_start = int(get_talk_data(other)['time'].strftime('%s'))
+        other_end = other_start + get_talk_data(other)['duration'] * 60
+
+        minutes = overlap((start, end), (other_start, other_end))
+        if minutes > 0:
+            overlapping_talks.add(other)
+    return overlapping_talks
+
+
+@memoize
+def check_overlaps():
+    for t in get_talk_names():
+        over = get_talk_overlaps(t)
+        noover = get_talk_data(t)['nooverlap']
+        contacts = set(get_talk_data(t)['contacts'])
+        for overlapping in over:
+            if overlapping in noover or \
+               set(get_talk_data(overlapping)['contacts']).\
+               intersection(contacts):
+                logging.warning('Talk %s overlaps with %s' % (t, overlapping))
+
+
 @memoize
 def jinja_env():
     env = jinja2.Environment(
@@ -358,6 +398,7 @@ class TalksGenerator(generators.Generator):
     def generate_context(self):
         self.talks = {n: get_talk_data(n) for n in get_talk_names()}
         self._update_context(('talks',))
+        check_overlaps()
 
     def generate_output(self, writer=None):
         for talkname in sorted(self.talks):

talks/_talk_example/meta.yaml

@@ -1,4 +1,3 @@
-# File di esempio; copialo e cambialo
 title: "Il titolo del talk"
 text: |
     Descrizione del talk divisa in molte righe
@@ -37,5 +36,9 @@ mail: "blabla"
 #    - tizio
 #    - caio
 
+# se chiedono di non sovrapporli con qualche talk, segnalo qui
+# cosi' poi il coso ci avvisa quando sbagliamo
+nooverlap: []
+
 # Devi usare UTF-8, non t'inventare scuse, sappiamo ndo abiti
 # vim: set fileencoding=utf-8 ts=4 sw=4 et:

talks/generatorerumore/meta.yaml

@@ -53,5 +53,7 @@ contacts:
     - Unit Hacklab
     - Big Fractal
 
+nooverlap: [ondecorte_email, spaziodicomunicazione]
+
 # Devi usare UTF-8, non t'inventare scuse, sappiamo ndo abiti
 # vim: set fileencoding=utf-8 ts=4 sw=4 et: