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ferret/pkg/drivers/common/getter.go

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4.5 KiB
Go
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package common
import (
"context"
"github.com/MontFerret/ferret/pkg/drivers"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
"github.com/MontFerret/ferret/pkg/runtime/values/types"
)
func GetInPage(ctx context.Context, page drivers.HTMLPage, path []core.Value) (core.Value, error) {
if len(path) == 0 {
return page, nil
}
segment := path[0]
if segment.Type() == types.String {
segment := segment.(values.String)
switch segment {
case "mainFrame", "document":
return GetInDocument(ctx, page.GetMainFrame(), path[1:])
case "frames":
if len(path) == 1 {
return page.GetFrames(ctx)
}
idx := path[1]
if !values.IsNumber(idx) {
return values.None, core.TypeError(idx.Type(), types.Int, types.Float)
}
value, err := page.GetFrame(ctx, values.ToInt(idx))
if err != nil {
return values.None, err
}
if len(path) == 2 {
return value, nil
}
frame, err := drivers.ToDocument(value)
if err != nil {
return values.None, err
}
return GetInDocument(ctx, frame, path[2:])
case "url", "URL":
return page.GetMainFrame().GetURL(), nil
case "cookies":
if len(path) == 1 {
return page.GetCookies(ctx)
}
switch idx := path[1].(type) {
case values.Int:
cookies, err := page.GetCookies(ctx)
if err != nil {
return values.None, err
}
return cookies.Get(idx), nil
default:
return values.None, core.TypeError(idx.Type(), types.Int)
}
case "isClosed":
return page.IsClosed(), nil
case "title":
return page.GetMainFrame().GetTitle(), nil
default:
return GetInDocument(ctx, page.GetMainFrame(), path)
}
}
return GetInDocument(ctx, page.GetMainFrame(), path)
}
func GetInDocument(ctx context.Context, doc drivers.HTMLDocument, path []core.Value) (core.Value, error) {
if len(path) == 0 {
return doc, nil
}
segment := path[0]
if segment.Type() == types.String {
segment := segment.(values.String)
switch segment {
case "url", "URL":
return doc.GetURL(), nil
case "title":
return doc.GetTitle(), nil
case "parent":
parent := doc.GetParentDocument()
if parent == nil {
return values.None, nil
}
if len(path) == 1 {
return parent, nil
}
return GetInDocument(ctx, parent, path[1:])
case "body", "head":
out := doc.QuerySelector(ctx, segment)
if out == values.None {
return out, nil
}
if len(path) == 1 {
return out, nil
}
el, err := drivers.ToElement(out)
if err != nil {
return values.None, err
}
return GetInElement(ctx, el, path[1:])
default:
return GetInNode(ctx, doc.GetElement(), path)
}
}
return GetInNode(ctx, doc.GetElement(), path)
}
func GetInElement(ctx context.Context, el drivers.HTMLElement, path []core.Value) (core.Value, error) {
if len(path) == 0 {
return el, nil
}
segment := path[0]
if segment.Type() == types.String {
segment := segment.(values.String)
switch segment {
case "innerText":
return el.GetInnerText(ctx), nil
case "innerHTML":
return el.GetInnerHTML(ctx), nil
case "value":
return el.GetValue(ctx), nil
case "attributes":
attrs := el.GetAttributes(ctx)
if len(path) == 1 {
return attrs, nil
}
return values.GetIn(ctx, attrs, path[1:])
case "style":
styles, err := el.GetStyles(ctx)
if err != nil {
return values.None, err
}
if len(path) == 1 {
return styles, nil
}
return values.GetIn(ctx, styles, path[1:])
default:
return GetInNode(ctx, el, path)
}
}
return GetInNode(ctx, el, path)
}
func GetInNode(ctx context.Context, node drivers.HTMLNode, path []core.Value) (core.Value, error) {
if len(path) == 0 {
return node, nil
}
nt := node.Type()
segment := path[0]
st := segment.Type()
switch st {
case types.Int:
if nt == drivers.HTMLElementType || nt == drivers.HTMLDocumentType {
re := node.(drivers.HTMLNode)
return re.GetChildNode(ctx, segment.(values.Int)), nil
}
return values.GetIn(ctx, node, path[1:])
case types.String:
segment := segment.(values.String)
switch segment {
case "isDetached":
return node.IsDetached(), nil
case "nodeType":
return node.GetNodeType(), nil
case "nodeName":
return node.GetNodeName(), nil
case "children":
children := node.GetChildNodes(ctx)
if len(path) == 1 {
return children, nil
}
return values.GetIn(ctx, children, path[1:])
case "length":
return node.Length(), nil
default:
return values.None, nil
}
default:
return values.None, core.TypeError(st, types.Int, types.String)
}
}