From 6a2b39f98da72d1cead6e4604494884ec46a3bd9 Mon Sep 17 00:00:00 2001
From: Oleg Broytman <phd@phdru.name>
Date: Mon, 10 Apr 2017 06:19:48 +0300
Subject: [PATCH] =?utf8?q?=D0=9F=D1=80=D0=BE=D1=81=D1=82=D0=B0=D0=B2=D0=B8?=
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---
 TODO          |  3 ---
 phd.py        | 29 +++++++++++++++++++++++++++++
 phd_site.tmpl | 26 ++++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/TODO b/TODO
index c4712eb..6c0e868 100644
--- a/TODO
+++ b/TODO
@@ -1,6 +1,3 @@
-ðÒÏÓÔÁ×ÉÔØ × ÂÌÏÇÅ ÓÓÙÌËÉ ÎÁ ÐÒÅÄ./ÓÌÅÄ. ÐÏÓÔÙ, ÐÏ ×ÒÅÍÅÎÉ É ÐÏ ÔÅÇÁÍ.
-
-
 ðÒÏÓÔÁ×ÉÔØ ÎÁ ×ÓÅÈ ÓÔÒÁÎÉÃÁÈ ÓÓÙÌËÉ ÎÁ ×ÁÌÉÄÁÔÏÒÙ
 http://validator.w3.org/check/referer É
 http://jigsaw.w3.org/css-validator/check/referer
diff --git a/phd.py b/phd.py
index 4e13617..6b67c20 100644
--- a/phd.py
+++ b/phd.py
@@ -5,6 +5,7 @@ except ImportError:
     from urllib.parse import quote as url_quote
 from Cheetah.Template import Template
 from Cheetah.compat import PY2
+from blog_db import load_blog
 
 
 url_re = r"(((https?|ftp|gopher|telnet)://|(mailto|file|news|about|ed2k|irc|sip|magnet):)[^' \t<>\"]+|(www|web|w3)[A-Za-z0-9_-]*\.[A-Za-z0-9._-]+\.[^' \t<>\"]+)[A-Za-z0-9/]"
@@ -100,6 +101,34 @@ class phd(Template):
         from markdown import markdown
         return markdown(self.body_mkd(), output_format="html")
 
+
+    def find_near_blog_posts(self):
+        if not self.path.startswith("/Russian/blog/"):
+            return None, None, None, None
+        dirs = self.path.split('/')
+        # blog post is ['', 'Russian', 'blog', year, month, day, filename]
+        if len(dirs) != 7:  # Not a blog post
+            return None, None, None, None
+        ymd = tuple(dirs[3:-1])
+        filename = self._fileBaseName
+
+        prev_key = prev_blog_post = current_key = current_blog_post = \
+                next_key = next_blog_post = None
+        old_blog = load_blog()
+        for key in sorted(old_blog):
+            for blog_post in sorted(old_blog[key]):
+                if current_blog_post:
+                    prev_key, prev_blog_post = current_key, current_blog_post
+                if next_blog_post:
+                    current_key, current_blog_post = next_key, next_blog_post
+                next_key = key
+                next_blog_post = blog_post
+                if current_blog_post and (current_key == ymd) and \
+                        (current_blog_post[0] == filename):  # Found!
+                    return prev_key, prev_blog_post, next_key, next_blog_post
+        return current_key, current_blog_post, None, None
+
+
     def img_thumbnail_800_1024(self, img_name):
         return """\
 <img src="%(img_name)s-thumbnail.jpg" alt="%(img_name)s-thumbnail.jpg" /><br />
diff --git a/phd_site.tmpl b/phd_site.tmpl
index 0388f0b..9f3bc64 100644
--- a/phd_site.tmpl
+++ b/phd_site.tmpl
@@ -113,6 +113,32 @@ $style
 #silent $breadcrumbs.append('<a href="' + $root + $subpath + '/">' + $path_components[i]+ '</a>')
 #end for
 #echo " / ".join($breadcrumbs)
+#if $path.startswith("/Russian/blog/")
+#set $prev_key, $prev_blog_post, $next_key, $next_blog_post = $find_near_blog_posts()
+#if $prev_blog_post
+#set $prev_href = $root + "Russian/blog/" + '/'.join($prev_key + ($prev_blog_post[0].replace('.tmpl', '.html'),))
+#set $prev_title = $prev_blog_post[1].decode('koi8-r')
+#end if
+#if $next_blog_post
+#set $next_href = $root + "Russian/blog/" + '/'.join($next_key + ($next_blog_post[0].replace('.tmpl', '.html'),))
+#set $next_title = $next_blog_post[1].decode('koi8-r')
+#end if
+<br>
+<table width="100%">
+  <tr>
+#if $prev_blog_post
+    <td style="text-align: left" width="50%">&lt;-- <a href="$prev_href">$prev_title</a></td>
+#else
+    <td style="text-align: left" width="50%">&nbsp;</td>
+#end if
+#if $next_blog_post
+    <td style="text-align: right" width="50%"><a href="$next_href">$next_title</a> --&gt;</td>
+#else
+    <td style="text-align: right" width="50%">&nbsp;</td>
+#end if
+  </tr>
+</table>
+#end if
 </p>
 $body
 #def link_tag($tag)
-- 
2.39.2