default to manpage view for help

1 files changed, 36 insertions, 0 deletions

diff --git a/man/manview/manview.go b/man/manview/manview.go
new file mode 100644
index 0000000..777f2cd
--- /dev/null
+++ b/man/manview/manview.go
@@ -0,0 +1,36 @@
+package manview
+
+import (
+	"embed"
+	_ "embed"
+	"github.com/ewy1/pik/spool"
+	"os"
+	"os/exec"
+	"strings"
+	"text/template"
+)
+
+//go:embed templates
+var pageTemplates embed.FS
+
+var page = template.Must(template.ParseFS(pageTemplates, "templates/*"))
+
+func View(fallback string) error {
+	man, manErr := exec.LookPath("man")
+	if manErr != nil {
+		_, err := spool.Print("%v\n", fallback)
+		return err
+	} else {
+		t := &strings.Builder{}
+		err := page.Execute(t, NewData())
+		if err != nil {
+			return err
+		}
+		reader := strings.NewReader(t.String())
+		cmd := exec.Command(man, "-l", "-")
+		cmd.Stdin = reader
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		return cmd.Run()
+	}
+}