45 lines
928 B
Go
45 lines
928 B
Go
package html
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"golang.org/x/net/html"
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)
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var ErrHTTPStatusCodeNotOK = errors.New("HTTP status code is not OK")
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func Fetch(ctx context.Context, client *http.Client, url string) (
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rootNode *html.Node, err error,
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) {
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request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
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if err != nil {
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return nil, fmt.Errorf("creating HTTP request: %w", err)
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}
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response, err := client.Do(request)
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if err != nil {
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return nil, err
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}
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if response.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("%w: %d %s", ErrHTTPStatusCodeNotOK,
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response.StatusCode, response.Status)
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}
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rootNode, err = html.Parse(response.Body)
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if err != nil {
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_ = response.Body.Close()
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return nil, fmt.Errorf("parsing HTML code: %w", err)
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}
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err = response.Body.Close()
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if err != nil {
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return nil, fmt.Errorf("closing response body: %w", err)
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}
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return rootNode, nil
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}
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