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feat: support the iframe and image resolving
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -14,4 +14,7 @@ reports/ | |
| node_modules | ||
| /build | ||
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| runtime/ | ||
| runtime/ | ||
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| .env* | ||
| !.env.sample | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| package resolvers | ||
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| import ( | ||
| "bytes" | ||
| "context" | ||
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| "github.com/PuerkitoBio/goquery" | ||
| "github.com/antchfx/htmlquery" | ||
| "github.com/pestanko/miniscrape/internal/models" | ||
| "github.com/rs/zerolog" | ||
| "golang.org/x/net/html" | ||
| ) | ||
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| // HTMLPageNode represents a node in the HTML page | ||
| type HTMLPageNode struct { | ||
| Content string | ||
| Attrs []html.Attribute | ||
| } | ||
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| // ParseWebPageContent parses the web page content | ||
| func ParseWebPageContent( | ||
| ctx context.Context, | ||
| page *models.Page, | ||
| bodyContent []byte, | ||
| ) (contentArray []HTMLPageNode, err error) { | ||
| if page.Query != "" { | ||
| contentArray, err = parseUsingCSSQuery(ctx, bodyContent, page.Query) | ||
| } else { | ||
| contentArray, err = parseUsingXPathQuery(ctx, bodyContent, page.XPath) | ||
| } | ||
| return | ||
| } | ||
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| func parseUsingXPathQuery(ctx context.Context, content []byte, xpath string) ([]HTMLPageNode, error) { | ||
| zerolog.Ctx(ctx).Trace(). | ||
| Str("xpath", xpath). | ||
| Msg("Parse using the the XPath") | ||
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| root, err := htmlquery.Parse(bytes.NewReader(content)) | ||
| if err != nil { | ||
| return []HTMLPageNode{}, err | ||
| } | ||
| nodes, err := htmlquery.QueryAll(root, xpath) | ||
| if err != nil { | ||
| return []HTMLPageNode{}, err | ||
| } | ||
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| var result []HTMLPageNode | ||
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| for _, node := range nodes { | ||
| if node == nil { | ||
| continue | ||
| } | ||
| htmlContent := htmlquery.OutputHTML(node, true) | ||
| result = append(result, HTMLPageNode{ | ||
| Content: htmlContent, | ||
| Attrs: node.Attr, | ||
| }) | ||
| } | ||
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| return result, nil | ||
| } | ||
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| func parseUsingCSSQuery(ctx context.Context, bodyContent []byte, query string) ([]HTMLPageNode, error) { | ||
| ll := zerolog.Ctx(ctx).With().Str("css_query", query).Logger() | ||
| ll.Trace().Msg("Parse using the the CSS query") | ||
| doc, err := goquery.NewDocumentFromReader(bytes.NewReader(bodyContent)) | ||
| if err != nil { | ||
| return []HTMLPageNode{}, err | ||
| } | ||
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| var content []HTMLPageNode | ||
| doc.Find(query).Each(func(idx int, selection *goquery.Selection) { | ||
| htmlContent, err := selection.Html() | ||
| if err != nil { | ||
| ll.Warn(). | ||
| Err(err). | ||
| Msg("Text extraction failed") | ||
| return | ||
| } | ||
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| attrs := getAttributesFromSelection(selection) | ||
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| content = append(content, HTMLPageNode{ | ||
| Content: htmlContent, | ||
| Attrs: attrs, | ||
| }) | ||
| }) | ||
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| if len(content) == 0 { | ||
| ll.Warn().Msg("No content found") | ||
| } | ||
|
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| return content, nil | ||
| } | ||
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| func getAttributesFromSelection(selection *goquery.Selection) []html.Attribute { | ||
| if selection == nil || len(selection.Nodes) == 0 { | ||
| return []html.Attribute{} | ||
| } | ||
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| return selection.Nodes[0].Attr | ||
| } | ||
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| // getAttrValue returns the value of the attribute | ||
| func getAttrValue(attrs []html.Attribute, name string) string { | ||
| for _, attr := range attrs { | ||
| if attr.Key == name { | ||
| return attr.Val | ||
| } | ||
| } | ||
| return "" | ||
| } | ||
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| // concatContent concats the content | ||
| func concatContent(contentArray []HTMLPageNode) string { | ||
| var content string | ||
| for _, node := range contentArray { | ||
| content += node.Content + "\n" | ||
| } | ||
| return content | ||
| } |
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