// renderComponent - Renders a component.
// `main` is where `Styles` and `Scripts` are inserted.
// `res` is where `Body` is inserted.
func renderComponent(c *Compiled, main, res *Rendered, ctx template.Context) (err error) {
// Set component defaults
ctx, err = withComponentDefaults(c, ctx)
if err != nil {
return
}
if glog.V(11) {
glog.Infof("[render] name=%q ctx=%#v", c.Name, ctx)
}
// Render required components
for name, req := range c.Require {
r := new(Rendered)
err = renderComponent(req, main, r, ctx)
if err != nil {
return
}
// Add resulting body to context
ctx[name] = pongo2.AsSafeValue(r.Body)
}
// Render `Main` component template
if c.Main != nil {
res.Body, err = template.ExecuteToString(c.Main, ctx)
if err != nil {
return
}
}
// Extend a template if any
if c.Extends != nil {
if res.Body != "" {
ctx["children"] = pongo2.AsSafeValue(res.Body)
}
err = renderComponent(c.Extends, main, res, ctx)
if err != nil {
return
}
}
// Render component styles and scripts
err = renderAssets(c, main, ctx)
if err != nil {
return
}
return
}
func filterRead(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, *pongo2.Error) {
data, err := ioutil.ReadFile(in.String())
if err != nil {
return nil, &pongo2.Error{
Sender: "filter:read",
ErrorMsg: err.Error(),
}
}
return pongo2.AsSafeValue(string(data)), nil
}
func filterTruncatesentencesHtml(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, *pongo2.Error) {
count := param.Integer()
if count <= 0 {
return pongo2.AsValue(""), nil
}
value := in.String()
newLen := max(param.Integer(), 0)
new_output := bytes.NewBuffer(nil)
sentencefilter := 0
filterTruncateHtmlHelper(value, new_output, func() bool {
return sentencefilter >= newLen
}, func(_ rune, _ int, idx int) int {
// Get next word
word_found := false
for idx < len(value) {
c2, size2 := utf8.DecodeRuneInString(value[idx:])
if c2 == utf8.RuneError {
idx += size2
continue
}
if c2 == '<' {
// HTML tag start, don't consume it
return idx
}
new_output.WriteRune(c2)
idx += size2
if (c2 == '.' && !(idx+1 < len(value) && value[idx+1] >= '0' && value[idx+1] <= '9')) ||
c2 == '!' || c2 == '?' || c2 == '\n' {
// Sentence ends here, stop capturing it now
break
} else {
word_found = true
}
}
if word_found {
sentencefilter++
}
return idx
}, func() {})
return pongo2.AsSafeValue(new_output.String()), nil
}
// Generates HTML (as a pongo2 safe value) for the given form. The given
// function is used for field layout.
func FormHTML(s interface{}, req *http.Request, htmlFunc HTMLFunc) *pongo2.Value {
buf := bytes.Buffer{}
sv := reflect.Indirect(reflect.ValueOf(s))
st := sv.Type()
numFields := sv.NumField()
for i := 0; i < numFields; i++ {
fv := sv.Field(i)
ff := st.Field(i)
finfo := GetFieldInfo(ff)
value := fmt.Sprintf("%v", fv.Interface())
htmlFunc(&finfo, value, req, &buf)
}
return pongo2.AsSafeValue(buf.String())
}
func formatTextP2(s string) *pongo2.Value {
return pongo2.AsSafeValue(formatText(s))
}
func filterMarkdown(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, *pongo2.Error) {
return pongo2.AsSafeValue(string(blackfriday.MarkdownCommon([]byte(in.String())))), nil
}
