From f0c948084e35c4deca3f5bcb3e055ff0d62adcc2 Mon Sep 17 00:00:00 2001
From: Knut Ahlers <knut@ahlers.me>
Date: Wed, 8 Apr 2020 22:38:16 +0200
Subject: [PATCH] Make blackfriday markdown available

Signed-off-by: Knut Ahlers <knut@ahlers.me>
---
 README.md                  | 6 ++++++
 functions/func_markdown.go | 9 +++++++++
 functions/go.mod           | 2 ++
 functions/go.sum           | 5 +++++
 go.sum                     | 4 ++++
 5 files changed, 26 insertions(+)
 create mode 100644 functions/func_markdown.go

diff --git a/README.md b/README.md
index b73a7c6..160019f 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,12 @@
   $ echo '{{ file "hello" }}' | korvike
   Hello World
   ```
+- `{{ markdown <source> }}`  
+  Format the source using a markdown parser
+  ```console
+  $ echo '{{ markdown "# headline" | korvike }}'
+  <h1>headline</h1>
+  ```
 - `{{ now <format string> }}`  
   Format the current date into the template (uses [Go time format](https://golang.org/pkg/time/#Time.Format))
   ```console
diff --git a/functions/func_markdown.go b/functions/func_markdown.go
new file mode 100644
index 0000000..21bd338
--- /dev/null
+++ b/functions/func_markdown.go
@@ -0,0 +1,9 @@
+package functions
+
+import "github.com/russross/blackfriday/v2"
+
+func init() {
+	registerFunction("markdown", func(name string, v ...string) string {
+		return string(blackfriday.Run([]byte(name)))
+	})
+}
diff --git a/functions/go.mod b/functions/go.mod
index 3697dbe..cd5d3df 100644
--- a/functions/go.mod
+++ b/functions/go.mod
@@ -5,4 +5,6 @@ go 1.12
 require (
 	github.com/hashicorp/vault/api v1.0.4
 	github.com/mitchellh/go-homedir v1.1.0
+	github.com/russross/blackfriday/v2 v2.0.1
+	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
 )
diff --git a/functions/go.sum b/functions/go.sum
index a524f3e..c749645 100644
--- a/functions/go.sum
+++ b/functions/go.sum
@@ -65,9 +65,14 @@ github.com/pierrec/lz4 v2.0.5+incompatible h1:2xWsjqPFWcplujydGg4WmhC/6fZqK42wMM
 github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
+github.com/russross/blackfriday v1.5.2 h1:HyvC0ARfnZBqnXwABFeSZHpKvJHJJfPz81GNueLj0oo=
+github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
+github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/ryanuber/columnize v2.1.0+incompatible/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
 github.com/ryanuber/go-glob v1.0.0 h1:iQh3xXAumdQ+4Ufa5b25cRpC5TYKlno6hsv6Cb3pkBk=
 github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
+github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
+github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
diff --git a/go.sum b/go.sum
index 6c349af..638502b 100644
--- a/go.sum
+++ b/go.sum
@@ -92,9 +92,13 @@ github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
+github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
+github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/ryanuber/columnize v2.1.0+incompatible/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
 github.com/ryanuber/go-glob v1.0.0 h1:iQh3xXAumdQ+4Ufa5b25cRpC5TYKlno6hsv6Cb3pkBk=
 github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
+github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
+github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=