From 09b2c85e1733a8fae84e5d705fb19b890b2b6cd9 Mon Sep 17 00:00:00 2001
From: Ryan Ford <ryanford@users.noreply.github.com>
Date: Mon, 19 Apr 2021 19:07:07 +0800
Subject: [PATCH] add get_tags plugin

---
 Tuprules.tup     |  1 +
 plugins/get_tags | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)
 create mode 100755 plugins/get_tags

diff --git a/Tuprules.tup b/Tuprules.tup
index b62af66..44c2aab 100644
--- a/Tuprules.tup
+++ b/Tuprules.tup
@@ -7,6 +7,7 @@ TMP = $(ROOT)/tmp
 
 # plugins to use (in order)
 PIPELINE = to_json
+PIPELINE += get_tags
 PIPELINE += syntax_highlighting
 PIPELINE += convert_markdown
 PIPELINE += to_html
diff --git a/plugins/get_tags b/plugins/get_tags
new file mode 100755
index 0000000..5a0721b
--- /dev/null
+++ b/plugins/get_tags
@@ -0,0 +1,24 @@
+#!/usr/bin/env lua
+local json = require("dkjson")
+
+local input = io.input(arg[1])
+local output = io.output(arg[2])
+
+local str = input:read("*a")
+if arg[1] then input:close() end
+local post = assert(json.decode(str))
+
+post.tags = {}
+local tagline = post.body:match("%[%w*tags%w*%]: .*")
+if tagline then
+   for tag in tagline:gmatch("#([^%s,]+)") do
+      table.insert(tags, tag)
+   end
+end
+
+local post_json = json.encode(post)
+
+output:write(post_json)
+if arg[2] then output:close() end
+
+os.exit(0, true)
-- 
2.45.2