add liquid template support

go.mod

@@ -4,6 +4,10 @@ go 1.22.0
 
 require (
 	github.com/niklasfasching/go-org v1.7.0 // indirect
+	github.com/osteele/liquid v1.3.2 // indirect
+	github.com/osteele/tuesday v1.0.3 // indirect
 	golang.org/x/net v0.0.0-20201224014010-6772e930b67b // indirect
+	gopkg.in/osteele/liquid.v1 v1.2.4 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,5 +1,9 @@
 github.com/niklasfasching/go-org v1.7.0 h1:vyMdcMWWTe/XmANk19F4k8XGBYg0GQ/gJGMimOjGMek=
 github.com/niklasfasching/go-org v1.7.0/go.mod h1:WuVm4d45oePiE0eX25GqTDQIt/qPW1T9DGkRscqLW5o=
+github.com/osteele/liquid v1.3.2 h1:G+MvVYt1HX2xuv99JgdrhV7zRVdlvFnNi8M5rN8gQmI=
+github.com/osteele/liquid v1.3.2/go.mod h1:VmzQQHa5v4E0GvGzqccfAfLgMwRk2V+s1QbxYx9dGak=
+github.com/osteele/tuesday v1.0.3 h1:SrCmo6sWwSgnvs1bivmXLvD7Ko9+aJvvkmDjB5G4FTU=
+github.com/osteele/tuesday v1.0.3/go.mod h1:pREKpE+L03UFuR+hiznj3q7j3qB1rUZ4XfKejwWFF2M=
 golang.org/x/net v0.0.0-20201224014010-6772e930b67b h1:iFwSg7t5GZmB/Q5TjiEAsdoLDrdJRC1RiF2WhuV29Qw=
 golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -7,5 +11,9 @@ golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9sn
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/osteele/liquid.v1 v1.2.4 h1:OioNeCaVyWL1jRXzRqQ2vr4ISBbTgtnYsJeVlToLhBw=
+gopkg.in/osteele/liquid.v1 v1.2.4/go.mod h1:9Bx5f04tf9SVwv3Tcx93dx3WH0EKWmE0Gjd6Dyoc5cs=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

templates/templates.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 
 	"github.com/niklasfasching/go-org/org"
+	"gopkg.in/osteele/liquid.v1"
 	"gopkg.in/yaml.v3"
 )
 
@@ -96,7 +97,13 @@ func (templ Template) Render() ([]byte, error) {
 		}
 
 	} else {
-		// TODO for other file types, assume a liquid template
+		// for other file types, assume a liquid template
+		engine := liquid.NewEngine()
+		out, err := engine.ParseAndRenderString(string(contents), templ.Metadata)
+		if err != nil {
+			return nil, err
+		}
+		contents = []byte(out)
 	}
 
 	// TODO: if layout in metadata, pass the result to the rendered parent

templates/templates_test.go

@@ -89,13 +89,51 @@ tags: ["software", "web"]
 }
 
 func TestRenderLiquid(t *testing.T) {
-	// TODO
+	input := `---
+title: my new post
+subtitle: a blog post
+tags: ["software", "web"]
+---
+<h1>{{ title }}</h1>
+<h2>{{ subtitle }}</h2>
+<ul>{% for tag in tags %}
+<li>{{tag}}</li>{% endfor %}
+</ul>
+`
+
+	file := newFile("test*.html", input)
+	defer os.Remove(file.Name())
+
+	templ, err := Parse(file.Name())
+	assertEqual(t, err, nil)
+	content, err := templ.Render()
+	assertEqual(t, err, nil)
+	expected := `<h1>my new post</h1>
+<h2>a blog post</h2>
+<ul>
+<li>software</li>
+<li>web</li>
+</ul>
+`
+	assertEqual(t, string(content), expected)
 }
 
 func TestRenderOrg(t *testing.T) {
 	// TODO
 }
 
+func TestRenderLiquidLayout(t *testing.T) {
+	// TODO
+}
+
+func TestRenderOrgLayout(t *testing.T) {
+	// TODO
+}
+
+func TestRenderLayoutLayout(t *testing.T) {
+	// TODO
+}
+
 // ------ HELPERS --------
 
 func newFile(name string, contents string) *os.File {