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[add] refactor template parser to support printing data

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This commit is contained in:
Max 2023-12-17 12:02:47 +08:00
parent bd798b03cc
commit 243b0707a7
2 changed files with 78 additions and 7 deletions
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7
sui/api/request.go
View file

@ -123,7 +123,12 @@ func (r *Request) Render() (string, int, error) {
data["$global"] = global
}
parser := core.NewTemplateParser(data, nil)
printData := false
if r.Query != nil && r.Query.Has("__sui_print_data") {
printData = true
}
parser := core.NewTemplateParser(data, &core.ParserOption{PrintData: printData})
html, err := parser.Render(c.HTML)
if err != nil {
return "", 500, fmt.Errorf("render error, please re-complie the page %s", err.Error())

78
sui/core/parser.go
View file

@ -6,6 +6,7 @@ import (
"strings"
"github.com/PuerkitoBio/goquery"
jsoniter "github.com/json-iterator/go"
"golang.org/x/net/html"
)
@ -28,8 +29,9 @@ type Mapping struct {
// ParserOption parser option
type ParserOption struct {
Editor bool `json:"editor,omitempty"`
Preview bool `json:"preview,omitempty"`
Editor bool `json:"editor,omitempty"`
Preview bool `json:"preview,omitempty"`
PrintData bool `json:"print_data,omitempty"`
}
// NewTemplateParser create a new template parser
@ -50,12 +52,18 @@ func NewTemplateParser(data Data, option *ParserOption) *TemplateParser {
// Render parses and renders the HTML template
func (parser *TemplateParser) Render(html string) (string, error) {
reader := bytes.NewReader([]byte(fmt.Sprintf("<root>%s</root>", html)))
if !strings.Contains(html, "<html") {
html = fmt.Sprintf(`<!DOCTYPE html><html lang="en">%s</html>`, html)
}
reader := bytes.NewReader([]byte(html))
doc, err := goquery.NewDocumentFromReader(reader)
if err != nil {
return "", err
}
root := doc.Selection.Find("root")
root := doc.Selection.Find("html")
parser.parseNode(root.Nodes[0])
// Replace the nodes
@ -64,9 +72,36 @@ func (parser *TemplateParser) Render(html string) (string, error) {
delete(parser.replace, sel)
}
// fmt.Println(root.Html())
// Print the data
jsPrintData := ""
if parser.option != nil && parser.option.PrintData {
jsPrintData = "console.log(__sui_data);\n"
}
// Append the data to the body
body := doc.Find("body")
if body.Length() > 0 {
data, err := jsoniter.MarshalToString(parser.data)
if err != nil {
data, _ = jsoniter.MarshalToString(map[string]string{"error": err.Error()})
}
body.AppendHtml("<script>\n" +
"try { " +
`var __sui_data = ` + data + ";\n" +
"} catch (e) { console.log('init data error:', e); }\n" +
jsPrintData +
"</script>\n",
)
}
// For editor
if parser.option != nil && parser.option.Editor {
return doc.Find("body").Html()
}
// fmt.Println(doc.Html())
// fmt.Println(parser.errors)
return root.Html()
return doc.Html()
}
// Parse parses and renders the HTML template
@ -108,6 +143,37 @@ func (parser *TemplateParser) parseElementNode(sel *goquery.Selection) {
if _, exist := sel.Attr("s:for"); exist {
parser.forStatementNode(sel)
}
// Parse the attributes
parser.parseElementAttrs(sel)
}
func (parser *TemplateParser) parseElementAttrs(sel *goquery.Selection) {
if len(sel.Nodes) < 0 {
return
}
if sel.AttrOr("parsed", "false") == "true" {
return
}
attrs := sel.Nodes[0].Attr
for _, attr := range attrs {
parser.sequence = parser.sequence + 1
res, hasStmt := parser.data.Replace(attr.Val)
if hasStmt {
bindings := strings.TrimSpace(attr.Val)
key := fmt.Sprintf("%v", parser.sequence)
parser.mapping[attr.Key] = Mapping{
Key: key,
Type: "attr",
Value: bindings,
}
sel.SetAttr(attr.Key, res)
bindname := fmt.Sprintf("s:bind:%s", attr.Key)
sel.SetAttr(bindname, bindings)
}
}
}
func (parser *TemplateParser) parseTextNode(node *html.Node) {