Linkify filter

blogofile/site_init/blog_filters/_filters/linkify.py

@@ -0,0 +1,58 @@
+# Replace first keyword in post with its link, given a list of keywords and links in a file
+import re
+from BeautifulSoup import BeautifulSoup
+import blogofile_bf as bf
+
+config = {"name": "Linkify",
+          "description": "Linkify blog post based on a file with a list of link",
+          "author": "Paolo Corti",
+}
+
+def linkify(text, word_dic):
+    """
+    take a html text and replace words that match a key in a dictionary with
+    the associated value, return the changed text.
+    Filter should be run after markup filter and syntax hightlight filter
+    """
+
+    VALID_TAGS = ['p', 'li']
+
+    def translate(match):
+        key = match.group(0)
+        value = word_dic[key.lower()]
+        # only first keyword must be linkified
+        if key in linkified_words:
+            return key
+        else:
+            linkified_words.append(key)
+            return value
+
+    list_dict = map(re.escape, word_dic)
+    list_dict2 = ['\\b%s\\b' % x for x in list_dict]
+    re_str = '|'.join(list_dict2)
+    rc = re.compile(re_str, re.IGNORECASE)
+    soup = BeautifulSoup(text)
+    textNodes = soup.findAll(text=True)
+
+    linkified_words = []
+    for textNode in textNodes:
+        parent = textNode.findParent()
+        if parent.name in VALID_TAGS:
+            urlifiedtext = rc.sub(translate, textNode)
+            textNode.replaceWith(urlifiedtext)
+    return soup.renderContents()
+
+def run(content):
+    """
+    Read links and create dictionary, then linkify post content
+    """
+    path_seo_links=bf.config.filters.linkify.seo_links
+    seo_links = open(path_seo_links, 'r').read().split("\n")
+    lst=[]
+    for l in seo_links:
+        if l.find(',')>0:
+            sl=l.split(",")
+            lst.append((sl[0].lower(), '<a href="%s">%s</a>' % (sl[1], sl[0])))
+    seo_dict=dict(lst)
+
+    return linkify(content, seo_dict)

blogofile/site_init/simple_blog/_config.py

@@ -47,6 +47,9 @@
 ## blog_timezone -- the timezone that you normally write your blog posts from
 blog.timezone = "US/Eastern"
 
+# links file for linkify
+import os
+filters.linkify.seo_links = "%s/_seolinks" % os.getcwd()
 
 ## Markdown extensions
 ## These are turned off by default, but turned on

blogofile/site_init/simple_blog/_posts/010 - post 10 - linkify test.markdown

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+---
+categories: linkify, test
+date: 2009/08/29 15:25:00
+title: Post 10
+filter: markdown, linkify
+---
+This is post #10 and it is testing the linkify filter.
+
+The links under the following paragraphs are automatically rendered by using that filter:
+
+Blogofile is a blog engine written in Python.
+Python source code is on GitHub.
+
+

blogofile/site_init/simple_blog/_seolinks

@@ -0,0 +1,4 @@
+Python, http://www.python.org
+Blogofile, http://www.blogofile.com/
+GitHub, https://github.com/
+