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|
package internal
import (
"bytes"
"text/template"
htemplate "html/template"
"strings"
"tildegit.org/tjp/sliderule/gopher"
"tildegit.org/tjp/sliderule/internal/types"
)
type renderItem struct {
Template string
Object any
}
type renderRef struct {
Type types.Status
Display string
Selector htemplate.URL
Hostname string
Port string
}
func simplifyLinks(items []renderItem, currentHost, currentPort string) {
for i, item := range items {
if item.Template != "link" && item.Template != "image" {
continue
}
m := item.Object.(renderRef)
if m.Hostname == currentHost && m.Port == currentPort {
m.Hostname = ""
m.Port = ""
m.Selector = htemplate.URL(strings.TrimPrefix(string(m.Selector), "URL:"))
items[i].Object = m
}
}
}
func AddOverrides(base *template.Template, overrides *template.Template) (*template.Template, error) {
if overrides == nil {
return base, nil
}
tmpl := base
var err error
for _, override := range overrides.Templates() {
tmpl, err = tmpl.AddParseTree(override.Name(), override.Tree)
if err != nil {
return nil, err
}
}
return tmpl, nil
}
func AddHTMLOverrides(base *htemplate.Template, overrides *htemplate.Template) (*htemplate.Template, error) {
if overrides == nil {
return base, nil
}
tmpl := base
var err error
for _, override := range overrides.Templates() {
tmpl, err = tmpl.AddParseTree(override.Name(), override.Tree)
if err != nil {
return nil, err
}
}
return tmpl, nil
}
func refItem(item gopher.MapItem) renderRef {
return renderRef{
Type: item.Type,
Display: item.Display,
Selector: htemplate.URL(item.Selector),
Hostname: item.Hostname,
Port: item.Port,
}
}
func RenderItems(doc gopher.MapDocument) []renderItem {
out := make([]renderItem, 0, len(doc))
out = append(out, renderItem{
Template: "header",
Object: doc,
})
inMsg := false
msg := &bytes.Buffer{}
var currentHost, currentPort string
for _, mapItem := range doc {
switch mapItem.Type {
case gopher.InfoMessageType:
if inMsg {
_, _ = msg.WriteString("\n")
} else {
msg.Reset()
}
_, _ = msg.WriteString(mapItem.Display)
inMsg = true
if currentHost == "" {
currentHost = mapItem.Hostname
}
if currentPort == "" {
currentPort = mapItem.Port
}
case gopher.GifFileType, gopher.ImageFileType, gopher.BitmapType, gopher.PngImageFileType:
if inMsg {
out = append(out, renderItem{
Template: "message",
Object: msg.String(),
})
inMsg = false
}
out = append(out, renderItem{
Template: "image",
Object: refItem(mapItem),
})
default:
if inMsg {
out = append(out, renderItem{
Template: "message",
Object: msg.String(),
})
inMsg = false
}
out = append(out, renderItem{
Template: "link",
Object: refItem(mapItem),
})
}
}
if inMsg {
out = append(out, renderItem{
Template: "message",
Object: msg.String(),
})
}
simplifyLinks(out, currentHost, currentPort)
return append(out, renderItem{
Template: "footer",
Object: doc,
})
}
|
