From c23098e9825b35a58a3e0120ae92d368ba7906a0 Mon Sep 17 00:00:00 2001
From: ktyl <me@ktyl.dev>
Date: Fri, 3 Jun 2022 16:12:32 +0100
Subject: [PATCH] generate rss feed from blog resolves #1

---
 makefile                  | 20 +++++------
 scripts/mkblogindex.py    |  7 +++-
 scripts/mkblogrss.py      | 76 +++++++++++++++++++++++++++++++++++++++
 src/inc_html/socials.html |  4 +--
 4 files changed, 94 insertions(+), 13 deletions(-)
 create mode 100644 scripts/mkblogrss.py

diff --git a/makefile b/makefile
index 7bcedf7..1c1fbb3 100644
--- a/makefile
+++ b/makefile
@@ -24,6 +24,7 @@ HTML_INCLUDES 	= $(shell find $(SRC_DIR)/inc_html -name *.html)
 CSS_INCLUDES	= $(shell find $(SRC_DIR)/inc_css -name *.css)
 
 BLOG_INDEX 			= $(OUT_DIR)/blog.html
+BLOG_RSS			= $(BLOG_OUT_DIR)/index.xml
 BLOG_INDEX_LINKS 	= $(BLOG_TMP_DIR)/blogindexlinks.html
 BLOG_TARGETS		= $(BLOG_PAGES:$(BLOG_SRC_DIR)/%.md=$(BLOG_OUT_DIR)/%.html)
 
@@ -45,9 +46,16 @@ deploy: site
 $(OUT_DIR)/%.html: $(ROOT_DIR)/%.html $(HTML_INCLUDES) $(BLOG_INDEX_LINKS) | $(OUT_DIR)
 	python ppp/ppp.py $< $(HTML_INCLUDES) $(BLOG_INDEX_LINKS) > $@
 
-blog: $(BLOG_TARGETS) | $(BLOG_TMP_DIR)
+$(OUT_DIR)/%.css: $(ROOT_DIR)/%.css $(CSS_INCLUDES) | $(OUT_DIR)
+	python ppp/ppp.py $< $(CSS_INCLUDES) > $@
 
-blog-index: $(BLOG_INDEX)
+$(OUT_DIR):
+	mkdir -p $@
+
+blog: $(BLOG_TARGETS) $(BLOG_RSS) | $(BLOG_TMP_DIR)
+
+$(BLOG_RSS): $(BLOG_PAGES)
+	python scripts/mkblogrss.py $(BLOG_PAGES) > $@
 
 $(BLOG_INDEX_LINKS): $(BLOG_TARGETS) | $(BLOG_TMP_DIR)
 	python scripts/mkblogindex.py $(BLOG_TARGETS) > $@
@@ -66,14 +74,6 @@ $(BLOG_OUT_DIR): | $(OUT_DIR)
 $(BLOG_TMP_DIR):
 	mkdir -p $@
 
-$(OUT_DIR)/%.html: $(ROOT_DIR)/%.html $(HTML_INCLUDES) $(BLOG_INDEX_LINKS) | $(OUT_DIR)
-	python ppp/ppp.py $< $(HTML_INCLUDES) $(BLOG_INDEX_LINKS) > $@
-
-$(OUT_DIR)/%.css: $(ROOT_DIR)/%.css $(CSS_INCLUDES) | $(OUT_DIR)
-	python ppp/ppp.py $< $(CSS_INCLUDES) > $@
-
-$(OUT_DIR):
-	mkdir -p $@
 
 clean:
 	rm -rf $(OUT_DIR) $(BLOG_TMP_DIR)
diff --git a/scripts/mkblogindex.py b/scripts/mkblogindex.py
index 7db00bd..516a586 100644
--- a/scripts/mkblogindex.py
+++ b/scripts/mkblogindex.py
@@ -28,7 +28,12 @@ posts.reverse()
 
 # for each file we want to output an <a> tag with a relative href to the site root
 for path in posts:
-    date = re.sub(path_pattern, r'<span class="post-date">\2-\3-\4</span>', path)
+    m = re.match(path_pattern, path)
+    year = m.group(2)
+    month = m.group(3).rjust(2, '0')
+    day = m.group(4).rjust(2, '0')
+
+    date = f'<span class="post-date">{year}-{month}-{day}</span>'
 
     title = ""
     with open(path) as f:
diff --git a/scripts/mkblogrss.py b/scripts/mkblogrss.py
new file mode 100644
index 0000000..dd1d862
--- /dev/null
+++ b/scripts/mkblogrss.py
@@ -0,0 +1,76 @@
+#!/usr/bin/env python3
+
+import markdown
+import pathlib
+import sys
+import re
+
+def print_usage():
+    print("\nusage: python mkblogrss.py POSTS\n")
+    print("\n")
+    print("\t\tPOSTS\tfilepaths of blog posts")
+
+# check args for at least one file path
+if len(sys.argv) < 2:
+    print_usage()
+    sys.exit(1)
+    
+# posts are arguments from index 1 onwards
+posts = sys.argv[1:]
+
+# header and footer to enclose feed items
+header = """<?xml version="1.0" encoding="utf-8" ?>
+<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0">
+<channel>
+    <title>Just Testing</title>
+    <link>https://ktyl.dev/blog/index.html</link>
+    <description>Vaguely technical "blogging" from Cat</description>
+    <atom:link href="https://ktyl.dev/blog/index.xml" rel="self" type="application/rss+xml"/>
+    """
+footer = "</channel></rss>"
+
+# regex patterns
+title_pattern = re.compile("<h1>(.+)</h1>")
+path_pattern = re.compile("(.+)\/(\d{4})\/(\d{1,2})\/(\d{1,2})\/(.+).md")
+
+def make_item(path):
+    str = "<item>\n"
+
+    # get the HTML version of the file
+    text = ""
+    with open(path) as f:
+        text = f.read()
+    html = markdown.markdown(text, extensions=["fenced_code"])
+
+    # title
+    title = ""
+    m = title_pattern.match(html)
+    title = m.group(1)
+    str += f"<title>{title}</title>\n"
+
+    # link
+    url = "/".join(pathlib.Path(path).parts[2:])
+    url = url.replace(".md", ".html")
+    link = f"https://ktyl.dev/blog/{url}"
+    str += f"<link>{link}</link>\n"
+
+    # content
+    description = html
+    description = re.sub('<', '&lt;', description)
+    description = re.sub('>', '&gt;', description)
+    str += f"<description>{description}</description>\n"
+
+    # pub date
+    date = re.sub(path_pattern, r'\2-\3-\4', path)
+    str += f"<pubDate>{date}</pubDate>\n"
+
+    str += "</item>"
+
+    return str
+
+# print everything!
+print(header)
+for p in posts:
+    print(make_item(p))
+print(footer)
+
diff --git a/src/inc_html/socials.html b/src/inc_html/socials.html
index 616d652..194e364 100644
--- a/src/inc_html/socials.html
+++ b/src/inc_html/socials.html
@@ -1,7 +1,7 @@
 <div class="socials">
+    <a href="mailto:me@ktyl.dev"><i class="fas fa-envelope"></i></a>
+    <a href="https://ktyl.dev/blog/index.xml"><i class="fas fa-rss"></i></a>
     <a href="https://github.com/ktyldev/"><i class="fab fa-github"></i></a>
     <a href="https://ktyl.itch.io/"><i class="fab fa-itch-io"></i></a>
-    <a href="https://instagram.com/ktyldev"><i class="fab fa-instagram"></i></a>
     <a href="https://linkedin.com/in/cat-flynn-08751611b/"><i class="fab fa-linkedin"></i></a>
-    <a href="https://youtube.com/channel/UCwAHiEt20BuQtih7yYFAokA"><i class="fab fa-youtube"></i></a>
 </div>