Add feed and build recipe

4 files changed, 114 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..936e539
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*.small.jpg
+*/index.xhtml
+atom.xml
+result
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..dcbd345
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,38 @@
+# Makefile for px.cnx.gdn
+# Copyright (C) 2023  Nguyễn Gia Phong
+#
+# This program is licensed under CC BY-SA 4.0.
+
+SHELL = /bin/sh
+PREFIX ?= /tmp/px.cnx.gdn
+
+PICTURES := $(filter-out %.small.jpg $(PREFIX)/%.jpg, $(wildcard */*.jpg))
+THUMBNAILS := $(patsubst %.jpg,%.small.jpg,$(PICTURES))
+DATA := $(wildcard */index.xml)
+PAGES := $(patsubst %.xml,%.xhtml,$(DATA))
+OUTPUTS := $(THUMBNAILS) $(PAGES) atom.xml
+ALL := $(OUTPUTS) $(PICTURES) index.xhtml favicon.png style.css
+
+all: $(OUTPUTS)
+
+%.small.jpg: %.jpg
+	epeg -w 1024 -p -q 80 $< $@
+
+%.xhtml: %.xml page.xslt
+	xsltproc page.xslt $< > $@
+
+atom.xml: atom.xslt $(DATA) $(wildcard *.svg)
+	xsltproc atom.xslt > atom.xml
+
+clean:
+	rm -f atom.xml */{index.xhtml,*.small.jpg}
+
+$(PREFIX)/%: %
+	install -Dm644 $< $@
+
+install: all $(addprefix $(PREFIX)/,$(ALL))
+
+uninstall:
+	rm -fr $(PREFIX)
+
+.PHONY: all clean install uninstall
diff --git a/atom.xslt b/atom.xslt
new file mode 100644
index 0000000..1bb4ecd
--- /dev/null
+++ b/atom.xslt
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="atom.xslt"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                xmlns="http://www.w3.org/2005/Atom">
+  <xsl:output method="xml" indent="yes" encoding="UTF-8"/>
+  <xsl:variable name="root">https://px.cnx.gdn/</xsl:variable>
+  <xsl:template match="page">
+    <xsl:variable name="base">
+      <xsl:value-of select="$root"/>
+      <xsl:value-of select="@curr"/>
+      <xsl:text>/</xsl:text>
+    </xsl:variable>
+    <xsl:for-each select="post">
+      <xsl:variable name="url">
+        <xsl:value-of select="$base"/>
+        <xsl:text>#</xsl:text>
+        <xsl:value-of select="@id"/>
+      </xsl:variable>
+      <entry>
+        <link rel="alternate" type="application/xhtml+xml" href="{$url}"/>
+        <id><xsl:value-of select="$url"/></id>
+        <title><xsl:value-of select="translate(@id, '-', ' ')"/></title>
+        <content type="xhtml">
+          <div xmlns="http://www.w3.org/1999/xhtml">
+            <xsl:for-each select="picture">
+              <img alt="{@desc}" title="{@desc}"
+                   src="{$base}{@filename}.jpg"/>
+            </xsl:for-each>
+          </div>
+        </content>
+        <updated><xsl:value-of select="time"/></updated>
+      </entry>
+    </xsl:for-each>
+  </xsl:template>
+
+  <xsl:template match="/">
+    <feed xmlns="http://www.w3.org/2005/Atom">
+      <link href="{$root}atom.xml" rel="self"/>
+      <link href="{$root}"/>
+      <id><xsl:value-of select="$root"/></id>
+      <icon><xsl:value-of select="$root"/>favicon.png</icon>
+
+      <title>pix by cnx</title>
+      <author>
+        <name>Nguyễn Gia Phong</name>
+        <uri>https://cnx.gdn/</uri>
+        <email>mcsinyx@disroot.org</email>
+      </author>
+      <rights>CC BY-SA 4.0</rights>
+      <xsl:apply-templates select="document('00/index.xml')/page">
+      </xsl:apply-templates>
+      <xsl:apply-templates select="document('01/index.xml')/page">
+      </xsl:apply-templates>
+      <xsl:apply-templates select="document('02/index.xml')/page">
+      </xsl:apply-templates>
+      <updated>2023-01-25T10:50:00Z</updated>
+    </feed>
+  </xsl:template>
+</xsl:stylesheet>
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..aba6cf9
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,13 @@
+{ epeg, lib, libxslt, nix-gitignore, stdenvNoCC }:
+stdenvNoCC.mkDerivation rec {
+  pname = "px.cnx.gdn";
+  version = "latest";
+  src = nix-gitignore.gitignoreSource [ ] ./.;
+  makeFlags = [ "PREFIX=$(out)" ];
+  buildInputs = [ epeg libxslt ];
+  enableParallelBuilding = true;
+  meta = {
+    homepage = "https://px.cnx.gdn";
+    license = lib.licenses.cc-by-sa-40;
+  };
+}