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ferret/pkg/stdlib/html/xpath.go
Tim Voronov 7ce6797e9c
Feature/#230 xpath (#322)
* Implemented XPath for CDP driver

* Added XPATH function

* Added e2e tests for CDP

* Fixed linting issues

* Added support of XPath to HTTP driver

* Fixed linting issues
2019-07-03 14:05:02 -04:00

32 lines
740 B
Go

package html
import (
"context"
"github.com/MontFerret/ferret/pkg/drivers"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
)
// XPath evaluates the XPath expression.
// @param source (HTMLPage | HTMLDocument | HTMLElement) - Target HTML object.
// @param expression (String) - XPath expression.
// @returns (Value) - Returns result of a given XPath expression.
func XPath(ctx context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 2, 2)
if err != nil {
return values.None, err
}
element, err := drivers.ToElement(args[0])
if err != nil {
return values.None, err
}
expr := values.ToString(args[1])
return element.XPath(ctx, expr)
}