snapshot of https://github.com/cortezaproject/corteza.git (2024.9.x, 2026-09-18; blobs > 131072B omitted)

server/system/renderer/html.go

@@ -0,0 +1,87 @@
+package renderer
+
+import (
+	"encoding/base64"
+	"fmt"
+	"html/template"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/Masterminds/sprig"
+)
+
+func preprocHTMLTemplate(pl *driverPayload) (*template.Template, error) {
+	bb, err := ioutil.ReadAll(pl.Template)
+	if err != nil {
+		return nil, err
+	}
+
+	gtpl := template.New("text/html_render").
+		Funcs(sprig.FuncMap()).
+		Funcs(template.FuncMap{
+			// "attachDataURL": func(name string) template.URL {
+			// 	// Find the attachment
+			// 	att, has := pl.Attachments[name]
+			// 	if !has {
+			// 		return template.URL(fmt.Sprintf("error: attachment not found: %s", name))
+			// 	}
+
+			// 	// Process source
+			// 	bb, err := ioutil.ReadAll(att.Source)
+			// 	if err != nil {
+			// 		return template.URL(fmt.Sprintf("error: %s", err.Error()))
+			// 	}
+
+			// 	return template.URL("data:" + att.Mime + ";base64," + base64.RawStdEncoding.EncodeToString(bb))
+			// },
+
+			"inlineRemote": func(url string) (template.URL, error) {
+				rsp, err := http.Get(url)
+				if err != nil {
+					return "", err
+				}
+
+				defer rsp.Body.Close()
+
+				bb, err := ioutil.ReadAll(rsp.Body)
+				if err != nil {
+					return "", err
+				}
+
+				raw := base64.RawStdEncoding.EncodeToString(bb)
+				return template.URL("data:" + rsp.Header.Get("Content-Type") + ";base64," + raw), nil
+			},
+			// emits the value as-is, without the contextual escaping
+			// html/template applies to every other interpolated value;
+			// unset values render empty, the same as plain interpolation
+			"safeHTML": func(v any) template.HTML {
+				if v == nil {
+					return ""
+				}
+
+				return template.HTML(fmt.Sprintf("%v", v))
+			},
+			"env": envGetter(),
+		})
+
+	// Prep the original template
+	t, err := gtpl.Parse(string(bb))
+	if err != nil {
+		return nil, err
+	}
+
+	// Prep partials
+	for _, p := range pl.Partials {
+		bb, err = ioutil.ReadAll(p)
+		if err != nil {
+			return nil, err
+		}
+
+		t, err = gtpl.Parse(string(bb))
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return t, nil
+}