refactor gophermap template handling and add markdown conversion

2 files changed, 121 insertions, 0 deletions

diff --git a/gopher/gophermap/mdconv/convert.go b/gopher/gophermap/mdconv/convert.go
new file mode 100644
index 0000000..5d4da08
--- /dev/null
+++ b/gopher/gophermap/mdconv/convert.go
@@ -0,0 +1,52 @@
+package mdconv
+
+import (
+	"io"
+	"text/template"
+
+	"tildegit.org/tjp/sliderule/gopher"
+	"tildegit.org/tjp/sliderule/gopher/gophermap/internal"
+)
+
+func Convert(wr io.Writer, doc gopher.MapDocument, overrides *template.Template) error {
+	tmpl, err := baseTmpl.Clone()
+	if err != nil {
+		return err
+	}
+
+	tmpl, err = internal.AddOverrides(tmpl, overrides)
+	if err != nil {
+		return err
+	}
+
+	for _, item := range internal.RenderItems(doc) {
+		if err := tmpl.ExecuteTemplate(wr, item.Template, item.Object); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+var baseTmpl = template.Must(template.New("mdconv").Parse(`
+{{ define "header" }}{{ end }}
+
+{{ define "message" -}}
+` + "```" + `
+{{.}}
+` + "```" + `
+
+{{ end }}
+
+{{ define "link" -}}
+[{{.Display}}]({{ if .Hostname | and .Port }}gopher://{{.Hostname}}:{{.Port}}{{ end }}{{.Selector}})
+
+{{ end }}
+
+{{ define "image" -}}
+![{{.Display}}]({{ if .Hostname | and .Port }}gopher://{{.Hostname}}:{{.Port}}{{ end }}{{.Selector}})
+
+{{ end }}
+
+{{ define "footer" }}{{ end }}
+`))
diff --git a/gopher/gophermap/mdconv/convert_test.go b/gopher/gophermap/mdconv/convert_test.go
new file mode 100644
index 0000000..2e39106
--- /dev/null
+++ b/gopher/gophermap/mdconv/convert_test.go
@@ -0,0 +1,69 @@
+package mdconv
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+	"testing"
+
+	"tildegit.org/tjp/sliderule/gopher/gophermap"
+)
+
+func TestConvert(t *testing.T) {
+	tests := []struct {
+		name   string
+		input  string
+		output string
+	}{
+		{
+			name: "basic doc",
+			input: strings.ReplaceAll(`
+iI am informational text		localhost	70
+icontinued on this line		localhost	70
+i		localhost	70
+0this is my text file	/file.txt	localhost	70
+i		localhost	70
+1here's a sub-menu	/sub/	localhost	70
+.
+`[1:], "\n", "\r\n"),
+			output: (`
+` + "```" + `
+I am informational text
+continued on this line
+
+` + "```" + `
+
+[this is my text file](/file.txt)
+
+` + "```" + `
+
+` + "```" + `
+
+[here's a sub-menu](/sub/)
+
+`)[1:],
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			doc, err := gophermap.Parse(bytes.NewBufferString(test.input))
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			buf := &bytes.Buffer{}
+			if err := Convert(buf, doc, nil); err != nil {
+				t.Fatal(err)
+			}
+
+			if buf.String() != test.output {
+				fmt.Println(">>> expected:")
+				fmt.Println(test.output)
+				fmt.Println(">>> got:")
+				fmt.Println(buf.String())
+				t.Fatal("html body mismatch")
+			}
+		})
+	}
+}