Merge branch 'build-feed'

9 files changed, 823 insertions, 308 deletions

diff --git a/Makefile b/Makefile
index f3971d6..ca01374 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+#################### Variables.
+
 OUTDIR = public
 
 dirname = $(patsubst %/,%,$(dir $(1)))
@@ -32,10 +34,21 @@ fonts_folders = $(call dirnames,$(fonts))
 scripts = $(foreach img,$(shell find scripts -type f),$(OUTDIR)/$(img))
 scripts_folders = $(call dirnames,$(scripts))
 
-.PHONY: all clean site upload
+#################### Top-level targets.
+
+# Building:
+.PHONY: all clean site
+
+# Maintenance:
+.PHONY: feeds upload
+
+#################### Recipes.
 
 all: site
 
+feeds:
+	./admin/feeds/build-feeds.sh $(feeds_src)
+
 upload: site
 	./upload.sh $(OUTDIR)
 
@@ -44,12 +57,9 @@ clean:
 
 site: $(pages) $(members_pages) $(feeds) $(images) $(stylesheets) $(fonts) $(scripts)
 
-$(images) $(stylesheets) $(fonts) $(scripts): $(OUTDIR)/%: %
+$(images) $(stylesheets) $(fonts) $(scripts) $(feeds): $(OUTDIR)/%: %
 	cp $< $@
 
-$(feeds): $(OUTDIR)/%: %
-	./build-feed.sh $< $@
-
 .SECONDEXPANSION:
 
 # 🔪 HACK ATTACK 🔪
diff --git a/admin/feeds/build-feed.py b/admin/feeds/build-feed.py
new file mode 100755
index 0000000..e010b63
--- /dev/null
+++ b/admin/feeds/build-feed.py
@@ -0,0 +1,189 @@
+#!/usr/bin/env python3
+
+from datetime import datetime
+import json
+import re
+from sys import argv
+from urllib.parse import urljoin
+
+from lxml.builder import E
+from lxml.etree import CDATA, XML, indent, tostring
+
+from helpers import (
+    DATE_FORMATTERS,
+    guess_language,
+    read_concerts,
+    tmplocale,
+    touchup_plaintext,
+)
+
+
+# TODO: handle timezones correctly.
+# Places to disambiguate:
+#
+# - concerts.in:
+#   either add the zone explicitly, or deduce it from the place,
+#   assuming all times in concerts.in are local times.
+#
+# - concerts-pubdates.json:
+#   just add the zone explicitly.
+#
+# Until then, assume all these "naive times" describe the same timezone
+# (CET/CEST).
+
+
+TIMEZONE = datetime.now().astimezone().tzinfo
+NOW = datetime.now(tz=TIMEZONE)
+DATE_FORMAT = '%-d %b %Y %H:%M %z'
+
+# TODO: add item pubDate
+
+
+LOCALIZED_TEXT = {
+    'en': {
+        'title': 'Bellefeuille Quartet',
+        'indexpath': 'en/',
+        'description': 'News from the Bellefeuille quartet',
+    },
+    'fr': {
+        'title': 'Quatuor Bellefeuille',
+        'indexpath': '/',
+        'description': 'Des nouvelles du quatuor Bellefeuille',
+    },
+}
+
+LOCALIZED_FORMATS = {
+    'en': {
+        'title': lambda c: f'{c.time.strftime("%B %-d %Y")} in {c.place}',
+    },
+    'fr': {
+        'title': lambda c: f'{c.time.strftime("%-d %B %Y")} à {c.place}',
+    },
+}
+
+
+def join(sequence, joiner_factory):
+    # There's got to be a standard itertools/functools thingy to do that…
+    result = []
+
+    for i, item in enumerate(sequence, start=1):
+        result.append(item)
+
+        if i == len(sequence):
+            break
+
+        result.append(joiner_factory())
+
+    return result
+
+
+def cdata_concert(concert, lang):
+    formatters = DATE_FORMATTERS[lang]
+
+    blocks = []
+
+    if concert.warning is not None:
+        blocks.append(E.p(concert.warning))
+
+    with tmplocale(lang):
+        blocks.extend((
+            E.p(formatters['date'](concert.time)),
+            E.p(formatters['time'](concert.time)),
+        ))
+
+    pieces = touchup_plaintext(concert.pieces)
+    instructions = touchup_plaintext(concert.instructions)
+
+    blocks.extend((
+        E.p(*join(concert.address.splitlines(), E.br)),
+        E.ol(
+            *(XML(f'<li>{line}</li>') for line in pieces.splitlines())
+        ),
+        *(XML(f'<p>{line}</p>') for line in instructions.splitlines()),
+    ))
+
+    # Do a silly dance to indent CDATA correctly.
+
+    for b in blocks:
+        indent(b)
+
+    html_blocks = (tostring(b, encoding='utf-8').decode() for b in blocks)
+
+    cdata = '\n'.join(html_blocks) + '\n'
+    cdata = re.sub('^', 8*' ', cdata, flags=re.MULTILINE)
+
+    return CDATA('\n' + cdata)
+
+
+def generate_concert(concert, concerts_url, pubdates, lang):
+    formatters = LOCALIZED_FORMATS[lang]
+
+    with tmplocale(lang):
+        title = formatters['title'](concert)
+
+    anchor = f'concert-{concert.time.strftime("%F")}'
+
+    item = E.item(
+        E.title(title),
+        E.link(f'{concerts_url}#{anchor}'),
+        E.description(cdata_concert(concert, lang)),
+    )
+
+    pubdate_str = pubdates[concert.time.isoformat(timespec='minutes')]
+
+    if pubdate_str is not None:
+        pubdate = datetime.fromisoformat(pubdate_str).replace(tzinfo=TIMEZONE)
+        item.append(E.pubDate(pubdate.strftime(DATE_FORMAT)))
+
+    return item
+
+
+def generate_concerts(concerts_src, concerts_url, concerts_pubdates, lang):
+    with open(concerts_pubdates) as pubdates_file:
+        pubdates = json.load(pubdates_file)
+
+    return tuple(
+        generate_concert(c, concerts_url, pubdates, lang)
+        for c in read_concerts(concerts_src)
+    )
+
+
+def main(concerts_src, feed_dst, concerts_pubdates, domain):
+    lang = guess_language(concerts_src)
+    text = LOCALIZED_TEXT[lang]
+
+    url = f'https://{domain}'
+    index_url = urljoin(url, text['indexpath'])
+    concerts_url = urljoin(index_url, 'concerts.html')
+
+    now_formatted = NOW.strftime(DATE_FORMAT)
+
+    concerts = generate_concerts(
+        concerts_src, concerts_url, concerts_pubdates, lang
+    )
+
+    rss = E.rss(
+        E.channel(
+            E.title(text['title']),
+            E.link(index_url),
+            E.description(text['description']),
+            E.image(
+                E.url(urljoin(url, 'images/logo.svg')),
+                E.link(concerts_url),
+            ),
+            E.lastBuildDate(now_formatted),
+            E.pubDate(now_formatted),
+            E.language(lang),
+            *concerts,
+        ),
+        version='2.0',
+    )
+
+    indent(rss)
+
+    with open(feed_dst, 'wb') as feed:
+        feed.write(tostring(rss, encoding='utf-8', xml_declaration=True))
+
+
+if __name__ == '__main__':
+    main(*argv[1:])
diff --git a/admin/feeds/build-feeds.sh b/admin/feeds/build-feeds.sh
new file mode 100755
index 0000000..99b4a6e
--- /dev/null
+++ b/admin/feeds/build-feeds.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -eu
+
+HERE=$(dirname "$0")
+ROOT=${HERE}/../..
+
+. "${ROOT}"/settings.sh
+
+FEEDS=("$@")
+
+for feed in "${FEEDS[@]}"
+do
+    concert=$(dirname "${feed}")/concerts.in
+
+    PYTHONPATH="${ROOT}"                                                \
+    "${HERE}"/build-feed.py "${concert}" "${feed}"                      \
+                            "${HERE}"/concerts-pubdates.json ${domain}
+done
diff --git a/admin/feeds/concerts-pubdates.json b/admin/feeds/concerts-pubdates.json
new file mode 100644
index 0000000..4232ed7
--- /dev/null
+++ b/admin/feeds/concerts-pubdates.json
@@ -0,0 +1,15 @@
+{
+    "2019-10-05T17:00": null,
+    "2019-10-06T16:00": null,
+    "2020-03-08T16:00": null,
+    "2020-08-24T20:00": null,
+    "2021-04-03T20:00": "2021-03-19T16:00",
+    "2021-06-13T15:00": "2021-03-19T16:00",
+    "2021-08-17T20:30": null,
+    "2021-08-19T20:00": null,
+    "2021-10-25T18:00": null,
+    "2021-10-28T18:00": null,
+    "2021-12-12T16:00": "2021-11-23T23:28",
+    "2021-12-31T20:00": null,
+    "2022-05-07T17:00": null
+}
diff --git a/build-concerts.py b/build-concerts.py
index 43dce57..6e99673 100755
--- a/build-concerts.py
+++ b/build-concerts.py
@@ -1,16 +1,17 @@
 #!/usr/bin/env python3
 
-from contextlib import contextmanager
-from dataclasses import dataclass
 from datetime import datetime
-import locale
-from operator import attrgetter
 from pathlib import Path
-import re
 from sys import argv
-from typing import Iterator, Optional
 
-from helpers import relative_path
+from helpers import (
+    DATE_FORMATTERS,
+    guess_language,
+    read_concerts,
+    relative_path,
+    tmplocale,
+    touchup_plaintext,
+)
 
 
 # TODO: change some jargon:
@@ -18,115 +19,6 @@ from helpers import relative_path
 # - canceled => warning
 
 
-LICENSE_URLS = {
-    'CC0': 'https://creativecommons.org/publicdomain/zero',
-    'CC BY': 'https://creativecommons.org/licenses/by',
-    'CC BY-SA': 'https://creativecommons.org/licenses/by-sa',
-}
-
-LICENSE_RE = re.compile(
-    '('+'|'.join(LICENSE_URLS.keys())+')' + ' ([0-9.]+)'
-)
-
-
-@dataclass
-class LicenseInfo:
-    tag: str
-    version: str
-
-    @classmethod
-    def deserialize(cls, info):
-        if info is None:
-            return None
-        return cls(*LICENSE_RE.fullmatch(info).groups())
-
-    def format(self):
-        url = f'{LICENSE_URLS[self.tag]}/{self.version}/'
-
-        return f'<a href="{url}" target="_blank">{self.tag}</a>'
-
-
-@dataclass
-class Illustration:
-    file: str
-    alt_text: str
-    source_name: str
-    source_link: Optional[str]
-    license_info: Optional[LicenseInfo]
-
-    @classmethod
-    def deserialize(cls, d):
-        return cls(d['pic_file'],
-                   d['pic_alt'],
-                   d['pic_src'],
-                   d['pic_link'],
-                   LicenseInfo.deserialize(d['pic_license']))
-
-
-@dataclass
-class Concert:
-    time: datetime
-    place: str
-    address: str
-    pieces: Iterator[str]
-    instructions: str
-    illustration: Illustration
-    warning: Optional[str]
-
-    @classmethod
-    def deserialize(cls, d):
-        return cls(
-            time=datetime.strptime(d['time'], '%d/%m/%Y %Hh%M'),
-            place=d['place'],
-            address=d['address'],
-            pieces=d['pieces'],
-            instructions=d['instructions'],
-            illustration=Illustration.deserialize(d),
-            warning=d['warning']
-        )
-
-
-def optional(line):
-    return f'(?:{line})?'
-
-
-CONCERT_LINES = (
-    r'QUAND : (?P<time>[^\n]+)\n',
-    r'O[UÙ] : (?P<place>[^\n]+)\n',
-    'ADRESSE :\n',
-    '(?P<address>.+?)\n',
-    'PROGRAMME :\n',
-    '(?P<pieces>.+?)\n',
-    'INSTRUCTIONS :\n',
-    '(?P<instructions>.+?)\n',
-    'ILLUSTRATION :\n',
-    r'fichier : (?P<pic_file>[^\n]+)\n',
-    r'légende : (?P<pic_alt>[^\n]+)\n',
-    r'source : (?P<pic_src>[^\n]+)\n',
-    optional(r'lien : (?P<pic_link>[^\n]+)\n'),
-    optional(r'licence : (?P<pic_license>[^\n]+)\n'),
-    optional(r'AVERTISSEMENT : (?P<warning>[^\n]+)\n'),
-)
-
-CONCERT_RE = re.compile(''.join(CONCERT_LINES), flags=re.DOTALL)
-
-
-def guess_language(filename):
-    parent = str(Path(filename).parent)
-    if parent == '.':
-        return 'fr'
-    return parent
-
-
-def read_concerts(filename):
-    with open(filename) as f:
-        concerts = (
-            Concert.deserialize(match)
-            for match in re.finditer(CONCERT_RE, f.read())
-        )
-        return tuple(sorted(concerts, key=attrgetter('time')))
-
-
 def split_concerts(concerts, threshold):
     cutoff = len(concerts)
 
@@ -177,28 +69,20 @@ THUMBNAIL_TEMPLATE = '''\
 '''
 
 
-@contextmanager
-def tmplocale(lang):
-    old_lang, encoding = locale.getlocale()
-    try:
-        locale.setlocale(locale.LC_TIME, (lang, encoding))
-        yield
-    finally:
-        locale.setlocale(locale.LC_TIME, (old_lang, encoding))
-
-
 def format_credits(illustration):
-    credits = illustration.source_name
+    attribution = illustration.source_name
 
     if illustration.source_link is not None:
-        credits = (f'<a href="{illustration.source_link}" target="_blank">'
-                   f'{illustration.source_name}'
-                   '</a>')
+        attribution = (
+            f'<a href="{illustration.source_link}" target="_blank">'
+            f'{illustration.source_name}'
+            '</a>'
+        )
 
     if illustration.license_info is not None:
-        credits += ' / ' + illustration.license_info.format()
+        attribution += ' / ' + illustration.license_info.format()
 
-    return credits
+    return attribution
 
 
 def format_thumbnail(concert, imgdir, lang):
@@ -256,18 +140,6 @@ DETAILS_TEMPLATE = '''\
 '''
 
 
-DATE_FORMATTERS = {
-    'en': {
-        'date': lambda d: d.strftime('%A %B %-d, %Y'),
-        'time': lambda d: d.strftime('%I:%M %P'),
-    },
-    'fr': {
-        'date': lambda d: d.strftime('%A %-d %B %Y').capitalize(),
-        'time': lambda d: d.strftime('%Hh%M'),
-    },
-}
-
-
 def detail_block(tag, classes, content):
     opener = f'<{tag} class="{" ".join(classes)}">'
     closer = f'</{tag}>'
@@ -286,20 +158,6 @@ def break_lines(lines):
     return tuple(line+'<br>' for line in lines[:-1]) + (lines[-1],)
 
 
-TOUCHUPS = (
-    (re.compile('([0-9])(st|nd|rd|th|er|ère|nde|ème)'), r'\1<sup>\2</sup>'),
-    (re.compile('(https://[^ ]+)'), r'<a href="\1" target="_blank">\1</a>'),
-    (re.compile('([^ ]+@[^ ]+)'), r'<a href="mailto:\1">\1</a>'),
-)
-
-
-def touchup_plaintext(plaintext):
-    text = plaintext
-    for regexp, repl in TOUCHUPS:
-        text = regexp.sub(repl, text)
-    return text
-
-
 def print_concert_details(concert, lang):
     concert_id = f'concert-{concert.time.strftime("%F")}'
     classes = ('details',)
diff --git a/build-feed.sh b/build-feed.sh
deleted file mode 100755
index f537e96..0000000
--- a/build-feed.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-# TODO: someday, generate both concerts page and feeds from a
-# plaintext list of concerts.
-
-set -eu
-
-input=$1
-output=$2
-
-. settings.sh
-
-sed s,'{DOMAIN}',"${domain}", "${input}" > "${output}"
diff --git a/en/feed.xml b/en/feed.xml
index a2557e7..72d5c8e 100644
--- a/en/feed.xml
+++ b/en/feed.xml
@@ -1,87 +1,227 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version='1.0' encoding='utf-8'?>
 <rss version="2.0">
   <channel>
     <title>Bellefeuille Quartet</title>
-    <link>https://{DOMAIN}</link>
+    <link>https://quatuorbellefeuille.com/en/</link>
     <description>News from the Bellefeuille quartet</description>
     <image>
-      <url>https://{DOMAIN}/images/logo.svg</url>
-      <link>https://{DOMAIN}/en/concerts.html</link>
+      <url>https://quatuorbellefeuille.com/images/logo.svg</url>
+      <link>https://quatuorbellefeuille.com/en/concerts.html</link>
     </image>
+    <lastBuildDate>23 Feb 2022 20:28 +0100</lastBuildDate>
+    <pubDate>23 Feb 2022 20:28 +0100</pubDate>
     <language>en</language>
     <item>
-      <title>December 12 2021 in Paris</title>
-      <link>https://{DOMAIN}/en/concerts.html#concert-2021-12-12</link>
+      <title>October 5 2019 in Le Buisson de Cadouin</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2019-10-05</link>
+      <description><![CDATA[
+        <p>Saturday October 5, 2019</p>
+        <p>05:00 pm</p>
+        <p>Pôle d'Animation Culturelle<br/>Avenue d'Aquitaine<br/>24480 Le Buisson de Cadouin</p>
+        <ol>
+          <li>Mozart quartet No. 17, KV. 458, “The Hunt”</li>
+          <li>Mendelssohn quartet No. 3, Op. 44 No. 1</li>
+          <li>Ravel string quartet</li>
+        </ol>
+        <p>Information and reservation: <a href="https://arcadesinfo.com/évènement/quatuor-a-cordes-bellefeuille/" target="_blank">https://arcadesinfo.com/évènement/quatuor-a-cordes-bellefeuille/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>October 6 2019 in Lalinde</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2019-10-06</link>
+      <description><![CDATA[
+        <p>Sunday October 6, 2019</p>
+        <p>04:00 pm</p>
+        <p>Espace Jacques Brel<br/>1 rue salle des fêtes<br/>24150 Lalinde</p>
+        <ol>
+          <li>Beethoven quartet Op. 18 No. 4</li>
+          <li>Chostakovitch quartet No. 11</li>
+          <li>Ravel string quartet</li>
+        </ol>
+        <p>Information and reservation: <a href="https://musiqueaucoeurdesbastides.jimdofree.com/" target="_blank">https://musiqueaucoeurdesbastides.jimdofree.com/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>March 8 2020 in Paris</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2020-03-08</link>
+      <description><![CDATA[
+        <p>Sunday March 8, 2020</p>
+        <p>04:00 pm</p>
+        <p>Chapelle Saint-Louis de la Salpêtrière<br/>47 boulevard de l'Hôpital<br/>75013 Paris</p>
+        <ol>
+          <li>Haydn quartet Op. 76 No. 1</li>
+          <li>Beethoven quartet No. 7, Op. 59 No. 1</li>
+        </ol>
+        <p>Free admission without reservation, subject to the number of available places.</p>
+        <p>For more information, please contact <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>August 24 2020 in Flaine</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2020-08-24</link>
       <description><![CDATA[
-      <p>Sunday December 12, 2021</p>
-      <p>04:00 pm</p>
-      <p>
-        Chapelle Saint-Louis de la Salpêtrière<br>
-        47 boulevard de l'Hôpital<br>
-        75013 Paris
-      </p>
-      <ol>
-        <li>Haydn 1<sup>st</sup> movement of quartet Op. 76 No. 1</li>
-        <li>Schubert quartettsatz</li>
-        <li>Beethoven quartet No. 7, Op. 59 No. 1</li>
-      </ol>
-      <p>
-        Free admission without reservation, subject to the number of
-        available places.
-      </p>
-      <p>
-        For more information, please contact
-        <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
-      </p>
-      ]]></description>
-      <pubDate>Tue, 23 Nov 2021 23:28:03 +0100</pubDate>
+        <p>Monday August 24, 2020</p>
+        <p>08:00 pm</p>
+        <p>Auditorium Éric &amp; Sylvie Boissonnas<br/>Flaine Forêt<br/>Route de Flaine<br/>74300 Arâches-la-Frasse</p>
+        <ol>
+          <li>Beethoven string trio Op. 9 No. 3</li>
+        </ol>
+        <p>Free admission without reservation, subject to the number of available places.</p>
+        <p>For more information, please contact <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
     </item>
     <item>
       <title>April 3 2021 in Dinard</title>
-      <link>https://{DOMAIN}/en/concerts.html#concert-2021-04-03</link>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-04-03</link>
       <description><![CDATA[
-      <p>POSTPONED</p>
-      <p>Saturday April 3, 2021</p>
-      <p>08:00 pm</p>
-      <p>Dinard</p>
-      <ol>
-        <li>Haydn quartet Op. 76 No. 1</li>
-        <li>Brahms quartet Op. 51 No. 2</li>
-        <li>Ravel string quartet</li>
-      </ol>
-      <p>
-        Information and reservation:
-        <a href="https://weekenddemusiqueclassique.fr" target="_blank">https://weekenddemusiqueclassique.fr</a>
-      </p>
-      ]]></description>
-      <pubDate>Fri, 19 Mar 2021 16:00:00 +0100</pubDate>
+        <p>POSTPONED</p>
+        <p>Saturday April 3, 2021</p>
+        <p>08:00 pm</p>
+        <p>Dinard</p>
+        <ol>
+          <li>Haydn quartet Op. 76 No. 1</li>
+          <li>Brahms quartet Op. 51 No. 2</li>
+          <li>Ravel string quartet</li>
+        </ol>
+        <p>Information and reservation: <a href="https://weekenddemusiqueclassique.fr" target="_blank">https://weekenddemusiqueclassique.fr</a>
+        </p>
+        ]]></description>
+      <pubDate>19 Mar 2021 16:00 +0100</pubDate>
     </item>
     <item>
       <title>June 13 2021 in Paris</title>
-      <link>https://{DOMAIN}/en/concerts.html#concert-2021-06-13</link>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-06-13</link>
+      <description><![CDATA[
+        <p>CANCELED</p>
+        <p>Sunday June 13, 2021</p>
+        <p>03:00 pm</p>
+        <p>Église Sainte-Claire d’Assise<br/>Place de la Porte-de-Pantin<br/>75019 Paris</p>
+        <ol>
+          <li>Haydn quartet Op. 76 No. 1​</li>
+          <li>Beethoven quartet No. 7, Op. 59 No. 1</li>
+        </ol>
+        <p>Free admission without reservation, subject to the number of available places.</p>
+        <p>For more information, please contact <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+      <pubDate>19 Mar 2021 16:00 +0100</pubDate>
+    </item>
+    <item>
+      <title>August 17 2021 in Flaine</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-08-17</link>
+      <description><![CDATA[
+        <p>Tuesday August 17, 2021</p>
+        <p>08:30 pm</p>
+        <p>Église des Carroz<br/>Route de Flaine<br/>74300 Les Carroz-d’Arâches</p>
+        <ol>
+          <li>Ravel string quartet</li>
+        </ol>
+        <p>Free admission without reservation, subject to the number of available places.</p>
+        <p>For more information, please contact <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>August 19 2021 in Flaine</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-08-19</link>
+      <description><![CDATA[
+        <p>Thursday August 19, 2021</p>
+        <p>08:00 pm</p>
+        <p>Auditorium Éric &amp; Sylvie Boissonnas<br/>Flaine Forêt<br/>Route de Flaine<br/>74300 Arâches-la-Frasse</p>
+        <ol>
+          <li>Bartók quartet No. 2</li>
+        </ol>
+        <p>Free admission without reservation, subject to the number of available places.</p>
+        <p>For more information, please contact <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>October 25 2021 in Mello</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-10-25</link>
+      <description><![CDATA[
+        <p>Monday October 25, 2021</p>
+        <p>06:00 pm</p>
+        <p>Le grand Mello<br/>Route de Creil<br/>60660 Mello</p>
+        <ol>
+          <li>Haydn quartet Op. 76 No. 1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Brahms quartet Op. 51 No. 2</li>
+        </ol>
+        <p>For more information, please refer to: <a href="https://www.ledimoredelquartetto.eu/en/october-25-2021-le-grand-mello-mello-france/" target="_blank">https://www.ledimoredelquartetto.eu/en/october-25-2021-le-grand-mello-mello-france/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>October 28 2021 in Paris</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-10-28</link>
+      <description><![CDATA[
+        <p>Thursday October 28, 2021</p>
+        <p>06:00 pm</p>
+        <p>Casa Saint Germain des Prés<br/>1 rue Madame<br/>75006 Paris</p>
+        <ol>
+          <li>Schubert quartettsatz</li>
+          <li>Brahms quartet Op. 51 No. 2</li>
+          <li>Ravel string quartet</li>
+        </ol>
+        <p>For more information, please refer to: <a href="https://www.ledimoredelquartetto.eu/en/october-28-2021-casa-st-germain-des-pres-paris/" target="_blank">https://www.ledimoredelquartetto.eu/en/october-28-2021-casa-st-germain-des-pres-paris/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>December 12 2021 in Paris</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-12-12</link>
+      <description><![CDATA[
+        <p>Sunday December 12, 2021</p>
+        <p>04:00 pm</p>
+        <p>Chapelle Saint-Louis de la Salpêtrière<br/>47 boulevard de l'Hôpital<br/>75013 Paris</p>
+        <ol>
+          <li>Haydn 1<sup>st</sup> movement of quartet Op. 76 No. 1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Beethoven quartet No. 7, Op. 59 No. 1</li>
+        </ol>
+        <p>Free admission without reservation, subject to the number of available places.</p>
+        <p>For more information, please contact <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+      <pubDate>23 Nov 2021 23:28 +0100</pubDate>
+    </item>
+    <item>
+      <title>December 31 2021 in Dilbeek</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2021-12-31</link>
+      <description><![CDATA[
+        <p>Friday December 31, 2021</p>
+        <p>08:00 pm</p>
+        <p>Château Grand-Bigard<br/>Isidoor van Beverenstraat 5<br/>1702 Dilbeek<br/>Belgium</p>
+        <ol>
+          <li>Haydn 1<sup>st</sup> movement of quartet Op. 76 No. 1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Ravel string quaret</li>
+        </ol>
+        <p>For more information, please refer to: <a href="https://www.ledimoredelquartetto.eu/en/december-31-2021-grand-bigard-castle-brussels-belgium/" target="_blank">https://www.ledimoredelquartetto.eu/en/december-31-2021-grand-bigard-castle-brussels-belgium/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>May 7 2022 in Saint-Domineuc</title>
+      <link>https://quatuorbellefeuille.com/en/concerts.html#concert-2022-05-07</link>
       <description><![CDATA[
-      <p>CANCELED</p>
-      <p>Sunday June 13, 2021</p>
-      <p>03:00 pm</p>
-      <p>
-        Église Sainte-Claire d’Assise<br>
-        Place de la Porte-de-Pantin<br>
-        75019 Paris
-      </p>
-      <ol>
-        <li>Haydn quartet Op. 76 No. 1​</li>
-        <li>Beethoven quartet No. 7, Op. 59 No. 1</li>
-      </ol>
-      <p>
-        Free admission without reservation, subject to the number of
-        available places.
-      </p>
-      <p>
-        For more information, please contact
-        <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
-      </p>
-      ]]></description>
-      <pubDate>Fri, 19 Mar 2021 16:00:00 +0100</pubDate>
+        <p>Saturday May 7, 2022</p>
+        <p>05:00 pm</p>
+        <p>Le Pianorium<br/>4 rue du Stade<br/>35190 Saint-Domineuc</p>
+        <ol>
+          <li>Haydn 1<sup>st</sup> movement of quartet Op. 76 No. 1</li>
+          <li>Mendelssohn quartet No. 3, Op. 44 No. 1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Shostakovich quartet</li>
+        </ol>
+        <p>Free admission, subject to the number of available places.</p>
+        <p>Contact <a href="mailto:info@pianorium.fr">info@pianorium.fr</a> to make a reservation.</p>
+        ]]></description>
     </item>
   </channel>
-</rss>
+</rss>
\ No newline at end of file
diff --git a/feed.xml b/feed.xml
index 3842285..026e284 100644
--- a/feed.xml
+++ b/feed.xml
@@ -1,83 +1,228 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version='1.0' encoding='utf-8'?>
 <rss version="2.0">
   <channel>
     <title>Quatuor Bellefeuille</title>
-    <link>https://{DOMAIN}</link>
+    <link>https://quatuorbellefeuille.com/</link>
     <description>Des nouvelles du quatuor Bellefeuille</description>
     <image>
-      <url>https://{DOMAIN}/images/logo.svg</url>
-      <link>https://{DOMAIN}/concerts.html</link>
+      <url>https://quatuorbellefeuille.com/images/logo.svg</url>
+      <link>https://quatuorbellefeuille.com/concerts.html</link>
     </image>
+    <lastBuildDate>23 Feb 2022 20:27 +0100</lastBuildDate>
+    <pubDate>23 Feb 2022 20:27 +0100</pubDate>
     <language>fr</language>
     <item>
-      <title>12 décembre 2021 à Paris</title>
-      <link>https://{DOMAIN}/concerts.html#concert-2021-12-12</link>
+      <title>5 octobre 2019 à Le Buisson de Cadouin</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2019-10-05</link>
+      <description><![CDATA[
+        <p>Samedi 5 octobre 2019</p>
+        <p>17h00</p>
+        <p>Pôle d'Animation Culturelle<br/>Avenue d'Aquitaine<br/>24480 Le Buisson de Cadouin</p>
+        <ol>
+          <li>Mozart quatuor n°17, KV. 458, « La Chasse »</li>
+          <li>Mendelssohn quatuor n°3, op.44 n°1</li>
+          <li>Ravel quatuor à cordes</li>
+        </ol>
+        <p>Informations et réservations : <a href="https://arcadesinfo.com/évènement/quatuor-a-cordes-bellefeuille/" target="_blank">https://arcadesinfo.com/évènement/quatuor-a-cordes-bellefeuille/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>6 octobre 2019 à Lalinde</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2019-10-06</link>
+      <description><![CDATA[
+        <p>Dimanche 6 octobre 2019</p>
+        <p>16h00</p>
+        <p>Espace Jacques Brel<br/>1 rue salle des fêtes<br/>24150 Lalinde</p>
+        <ol>
+          <li>Beethoven quatuor op.18 n°4</li>
+          <li>Chostakovitch quatuor n°11</li>
+          <li>Ravel quatuor à cordes</li>
+        </ol>
+        <p>Informations et réservations : <a href="https://musiqueaucoeurdesbastides.jimdofree.com/" target="_blank">https://musiqueaucoeurdesbastides.jimdofree.com/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>8 mars 2020 à Paris</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2020-03-08</link>
+      <description><![CDATA[
+        <p>Dimanche 8 mars 2020</p>
+        <p>16h00</p>
+        <p>Chapelle Saint-Louis de la Salpêtrière<br/>47 boulevard de l'Hôpital<br/>75013 Paris</p>
+        <ol>
+          <li>Haydn quatuor op.76 n°1</li>
+          <li>Beethoven quatuor n°7, op.59 n°1</li>
+        </ol>
+        <p>Entrée libre sans réservation dans la limite des places disponibles.</p>
+        <p>Pour plus d'informations, merci de contacter : <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>24 août 2020 à Flaine</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2020-08-24</link>
       <description><![CDATA[
-      <p>Dimanche 12 décembre 2021</p>
-      <p>16h00</p>
-      <p>
-        Chapelle Saint-Louis de la Salpêtrière<br>
-        47 boulevard de l'Hôpital<br>
-        75013 Paris
-      </p>
-      <ol>
-        <li>Haydn 1<sup>er</sup> mouvement du quatuor op.76 n°1</li>
-        <li>Schubert quartettsatz</li>
-        <li>Beethoven quatuor n°7, op.59 n°1</li>
-      </ol>
-      <p>
-        Pour plus d'informations, merci de contacter :
-        <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
-      </p>
-      ]]></description>
-      <pubDate>Tue, 23 Nov 2021 23:28:03 +0100</pubDate>
+        <p>Lundi 24 août 2020</p>
+        <p>20h00</p>
+        <p>Auditorium Éric &amp; Sylvie Boissonnas<br/>Flaine Forêt<br/>Route de Flaine<br/>74300 Arâches-la-Frasse</p>
+        <ol>
+          <li>Beethoven trio à cordes op.9 n°3</li>
+        </ol>
+        <p>Entrée libre sans réservation, dans la limite des places disponibles.</p>
+        <p>Pour plus d'informations, merci de contacter : <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
     </item>
     <item>
       <title>3 avril 2021 à Dinard</title>
-      <link>https://{DOMAIN}/concerts.html#concert-2021-04-03</link>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-04-03</link>
       <description><![CDATA[
-      <p>REPORTÉ</p>
-      <p>Samedi 3 avril 2021</p>
-      <p>20h00</p>
-      <p>Dinard</p>
-      <ol>
-        <li>Haydn quatuor op.76 n°1</li>
-        <li>Brahms quatuor op.51 n°2</li>
-        <li>Ravel quatuor à cordes</li>
-      </ol>
-      <p>
-        Informations et réservations :
-        <a href="https://weekenddemusiqueclassique.fr" target="_blank">https://weekenddemusiqueclassique.fr</a>
-      </p>
-      ]]></description>
-      <pubDate>Fri, 19 Mar 2021 16:00:00 +0100</pubDate>
+        <p>REPORTÉ</p>
+        <p>Samedi 3 avril 2021</p>
+        <p>20h00</p>
+        <p>Dinard</p>
+        <ol>
+          <li>Haydn quatuor op.76 n°1</li>
+          <li>Brahms quatuor op.51 n°2</li>
+          <li>Ravel quatuor à cordes</li>
+        </ol>
+        <p>Informations et réservations : <a href="https://weekenddemusiqueclassique.fr" target="_blank">https://weekenddemusiqueclassique.fr</a>
+        </p>
+        ]]></description>
+      <pubDate>19 Mar 2021 16:00 +0100</pubDate>
     </item>
     <item>
       <title>13 juin 2021 à Paris</title>
-      <link>https://{DOMAIN}/concerts.html#concert-2021-06-13</link>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-06-13</link>
+      <description><![CDATA[
+        <p>ANNULÉ</p>
+        <p>Dimanche 13 juin 2021</p>
+        <p>15h00</p>
+        <p>Église Sainte-Claire d’Assise<br/>Place de la Porte-de-Pantin<br/>75019 Paris</p>
+        <ol>
+          <li>Haydn quatuor op.76 n°1​</li>
+          <li>Beethoven quatuor n°7, op.59 n°1</li>
+        </ol>
+        <p>Entrée libre sans réservation, dans la limite des places disponibles.</p>
+        <p>Pour plus d'informations, merci de contacter : <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+      <pubDate>19 Mar 2021 16:00 +0100</pubDate>
+    </item>
+    <item>
+      <title>17 août 2021 à Flaine</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-08-17</link>
+      <description><![CDATA[
+        <p>Mardi 17 août 2021</p>
+        <p>20h30</p>
+        <p>Église des Carroz<br/>Route de Flaine<br/>74300 Les Carroz-d’Arâches</p>
+        <ol>
+          <li>Ravel quatuor à cordes</li>
+        </ol>
+        <p>Entrée libre sans réservation, dans la limite des places disponibles.</p>
+        <p>Pour plus d'informations, merci de contacter : <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>19 août 2021 à Flaine</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-08-19</link>
+      <description><![CDATA[
+        <p>Jeudi 19 août 2021</p>
+        <p>20h00</p>
+        <p>Auditorium Éric &amp; Sylvie Boissonnas<br/>Flaine Forêt<br/>Route de Flaine<br/>74300 Arâches-la-Frasse</p>
+        <ol>
+          <li>Bartók quatuor n°2</li>
+        </ol>
+        <p>Entrée libre sans réservation, dans la limite des places disponibles.</p>
+        <p>Pour plus d'informations, merci de contacter : <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>25 octobre 2021 à Mello</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-10-25</link>
+      <description><![CDATA[
+        <p>Lundi 25 octobre 2021</p>
+        <p>18h00</p>
+        <p>Le grand Mello<br/>Route de Creil<br/>60660 Mello</p>
+        <ol>
+          <li>Haydn quatuor op.76 n°1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Brahms quatuor op.51 n°2</li>
+        </ol>
+        <p>Pour plus d'informations, rendez-vous sur : <a href="https://www.ledimoredelquartetto.eu/en/october-25-2021-le-grand-mello-mello-france/" target="_blank">https://www.ledimoredelquartetto.eu/en/october-25-2021-le-grand-mello-mello-france/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>28 octobre 2021 à Paris</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-10-28</link>
+      <description><![CDATA[
+        <p>Jeudi 28 octobre 2021</p>
+        <p>18h00</p>
+        <p>Casa Saint Germain des Prés<br/>1 rue Madame<br/>75006 Paris</p>
+        <ol>
+          <li>Schubert quartettsatz</li>
+          <li>Brahms quatuor op.51 n°2</li>
+          <li>Ravel quatuor à cordes</li>
+        </ol>
+        <p>Pour plus d'informations, rendez-vous sur : <a href="https://www.ledimoredelquartetto.eu/en/october-28-2021-casa-st-germain-des-pres-paris/" target="_blank">https://www.ledimoredelquartetto.eu/en/october-28-2021-casa-st-germain-des-pres-paris/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>12 décembre 2021 à Paris</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-12-12</link>
+      <description><![CDATA[
+        <p>Dimanche 12 décembre 2021</p>
+        <p>16h00</p>
+        <p>Chapelle Saint-Louis de la Salpêtrière<br/>47 boulevard de l'Hôpital<br/>75013 Paris</p>
+        <ol>
+          <li>Haydn 1<sup>er</sup> mouvement du quatuor op.76 n°1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Beethoven quatuor n°7, op.59 n°1</li>
+        </ol>
+        <p>Entrée libre sans réservation dans la limite des places disponibles.</p>
+        <p>Pour plus d'informations, merci de contacter : <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
+        </p>
+        ]]></description>
+      <pubDate>23 Nov 2021 23:28 +0100</pubDate>
+    </item>
+    <item>
+      <title>31 décembre 2021 à Dilbeek</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2021-12-31</link>
+      <description><![CDATA[
+        <p>Vendredi 31 décembre 2021</p>
+        <p>20h00</p>
+        <p>Château Grand-Bigard<br/>Isidoor van Beverenstraat 5<br/>1702 Dilbeek<br/>Belgique</p>
+        <ol>
+          <li>Haydn 1<sup>er</sup> mouvement du quatuor op.76 n°1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Ravel quatuor à cordes</li>
+        </ol>
+        <p>Pour plus d'informations, rendez-vous sur : <a href="https://www.ledimoredelquartetto.eu/en/december-31-2021-grand-bigard-castle-brussels-belgium/" target="_blank">https://www.ledimoredelquartetto.eu/en/december-31-2021-grand-bigard-castle-brussels-belgium/</a>
+        </p>
+        ]]></description>
+    </item>
+    <item>
+      <title>7 mai 2022 à Saint-Domineuc</title>
+      <link>https://quatuorbellefeuille.com/concerts.html#concert-2022-05-07</link>
       <description><![CDATA[
-      <p>ANNULÉ</p>
-      <p>Dimanche 13 juin 2021</p>
-      <p>15h00</p>
-      <p>
-        Église Sainte-Claire d’Assise<br>
-        Place de la Porte-de-Pantin<br>
-        75019 Paris
-      </p>
-      <ol>
-        <li>Haydn quatuor op.76 n°1​</li>
-        <li>Beethoven quatuor n°7, op.59 n°1</li>
-      </ol>
-      <p>
-        Entrée libre sans réservation, dans la limite des places
-        disponibles.
-      </p>
-      <p>
-        Pour plus d'informations, merci de contacter :
-        <a href="mailto:quatuorbellefeuille@gmail.com">quatuorbellefeuille@gmail.com</a>
-      </p>
-      ]]></description>
-      <pubDate>Fri, 19 Mar 2021 16:00:00 +0100</pubDate>
+        <p>Samedi 7 mai 2022</p>
+        <p>17h00</p>
+        <p>Le Pianorium<br/>4 rue du Stade<br/>35190 Saint-Domineuc</p>
+        <ol>
+          <li>Haydn 1<sup>er</sup> mouvement du quatuor op.76 n°1</li>
+          <li>Mendelssohn quatuor n°3, op.44 n°1</li>
+          <li>Schubert quartettsatz</li>
+          <li>Chostakovitch quatuor</li>
+        </ol>
+        <p>Entrée libre dans la limite des places disponibles.</p>
+        <p>Réservation possible à l'adresse suivante : <a href="mailto:info@pianorium.fr">info@pianorium.fr</a>
+        </p>
+        ]]></description>
     </item>
   </channel>
-</rss>
+</rss>
\ No newline at end of file
diff --git a/helpers.py b/helpers.py
index faf14e7..11a13ca 100644
--- a/helpers.py
+++ b/helpers.py
@@ -1,5 +1,19 @@
+from contextlib import contextmanager
+from dataclasses import dataclass
+from datetime import datetime
+import locale
+from operator import attrgetter
 from os import path
 from pathlib import Path
+import re
+from typing import Iterator, Optional
+
+
+def guess_language(filename):
+    parent = str(Path(filename).parent)
+    if parent == '.':
+        return 'fr'
+    return parent
 
 
 def relative_path(*, to, ref):
@@ -7,3 +21,141 @@ def relative_path(*, to, ref):
     # os.path.dirname('x') yields '' rather than '.'.
     # 😮‍💨
     return path.relpath(to, Path(ref).parent)
+
+
+@contextmanager
+def tmplocale(lang):
+    old_lang, encoding = locale.getlocale()
+    try:
+        locale.setlocale(locale.LC_TIME, (lang, encoding))
+        yield
+    finally:
+        locale.setlocale(locale.LC_TIME, (old_lang, encoding))
+
+
+_LICENSE_URLS = {
+    'CC0': 'https://creativecommons.org/publicdomain/zero',
+    'CC BY': 'https://creativecommons.org/licenses/by',
+    'CC BY-SA': 'https://creativecommons.org/licenses/by-sa',
+}
+
+_LICENSE_RE = re.compile(
+    '('+'|'.join(_LICENSE_URLS.keys())+')' + ' ([0-9.]+)'
+)
+
+
+@dataclass
+class LicenseInfo:
+    tag: str
+    version: str
+
+    @classmethod
+    def deserialize(cls, info):
+        if info is None:
+            return None
+        return cls(*_LICENSE_RE.fullmatch(info).groups())
+
+    def format(self):
+        url = f'{_LICENSE_URLS[self.tag]}/{self.version}/'
+
+        return f'<a href="{url}" target="_blank">{self.tag}</a>'
+
+
+@dataclass
+class Illustration:
+    file: str
+    alt_text: str
+    source_name: str
+    source_link: Optional[str]
+    license_info: Optional[LicenseInfo]
+
+    @classmethod
+    def deserialize(cls, d):
+        return cls(d['pic_file'],
+                   d['pic_alt'],
+                   d['pic_src'],
+                   d['pic_link'],
+                   LicenseInfo.deserialize(d['pic_license']))
+
+
+@dataclass
+class Concert:
+    time: datetime
+    place: str
+    address: str
+    pieces: Iterator[str]
+    instructions: str
+    illustration: Illustration
+    warning: Optional[str]
+
+    @classmethod
+    def deserialize(cls, d):
+        return cls(
+            time=datetime.strptime(d['time'], '%d/%m/%Y %Hh%M'),
+            place=d['place'],
+            address=d['address'],
+            pieces=d['pieces'],
+            instructions=d['instructions'],
+            illustration=Illustration.deserialize(d),
+            warning=d['warning']
+        )
+
+
+def _optional(line):
+    return f'(?:{line})?'
+
+
+_CONCERT_LINES = (
+    r'QUAND : (?P<time>[^\n]+)\n',
+    r'O[UÙ] : (?P<place>[^\n]+)\n',
+    'ADRESSE :\n',
+    '(?P<address>.+?)\n',
+    'PROGRAMME :\n',
+    '(?P<pieces>.+?)\n',
+    'INSTRUCTIONS :\n',
+    '(?P<instructions>.+?)\n',
+    'ILLUSTRATION :\n',
+    r'fichier : (?P<pic_file>[^\n]+)\n',
+    r'légende : (?P<pic_alt>[^\n]+)\n',
+    r'source : (?P<pic_src>[^\n]+)\n',
+    _optional(r'lien : (?P<pic_link>[^\n]+)\n'),
+    _optional(r'licence : (?P<pic_license>[^\n]+)\n'),
+    _optional(r'AVERTISSEMENT : (?P<warning>[^\n]+)\n'),
+)
+
+_CONCERT_RE = re.compile(''.join(_CONCERT_LINES), flags=re.DOTALL)
+
+
+def read_concerts(filename):
+    with open(filename) as f:
+        concerts = (
+            Concert.deserialize(match)
+            for match in re.finditer(_CONCERT_RE, f.read())
+        )
+        return tuple(sorted(concerts, key=attrgetter('time')))
+
+
+_TOUCHUPS = (
+    (re.compile('([0-9])(st|nd|rd|th|er|ère|nde|ème)'), r'\1<sup>\2</sup>'),
+    (re.compile('(https://[^ ]+)'), r'<a href="\1" target="_blank">\1</a>'),
+    (re.compile('([^ ]+@[^ ]+)'), r'<a href="mailto:\1">\1</a>'),
+)
+
+
+def touchup_plaintext(plaintext):
+    text = plaintext
+    for regexp, repl in _TOUCHUPS:
+        text = regexp.sub(repl, text)
+    return text
+
+
+DATE_FORMATTERS = {
+    'en': {
+        'date': lambda d: d.strftime('%A %B %-d, %Y'),
+        'time': lambda d: d.strftime('%I:%M %P'),
+    },
+    'fr': {
+        'date': lambda d: d.strftime('%A %-d %B %Y').capitalize(),
+        'time': lambda d: d.strftime('%Hh%M'),
+    },
+}