116 lines
2.7 KiB
Markdown
116 lines
2.7 KiB
Markdown
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```go title="Go"
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package main
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import (
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"fmt"
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"log"
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"strings"
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"github.com/kreuzberg-dev/kreuzberg/packages/go/v5"
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)
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func main() {
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result, err := kreuzberg.ExtractFileSync("document.pdf", nil)
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if err != nil {
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log.Fatalf("extract pdf: %v", err)
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}
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// Access PDF metadata
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if pdf, ok := result.Metadata.PdfMetadata(); ok {
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if pdf.PageCount != nil {
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fmt.Printf("Pages: %d\n", *pdf.PageCount)
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}
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if pdf.Author != nil {
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fmt.Printf("Author: %s\n", *pdf.Author)
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}
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if pdf.Title != nil {
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fmt.Printf("Title: %s\n", *pdf.Title)
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}
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}
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// Access HTML metadata
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htmlResult, err := kreuzberg.ExtractFileSync("page.html", nil)
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if err != nil {
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log.Fatalf("extract html: %v", err)
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}
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if html, ok := htmlResult.Metadata.HTMLMetadata(); ok {
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if html.Title != nil {
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fmt.Printf("Title: %s\n", *html.Title)
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}
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if html.Description != nil {
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fmt.Printf("Description: %s\n", *html.Description)
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}
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// Access keywords as array
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if len(html.Keywords) > 0 {
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fmt.Printf("Keywords: %s\n", strings.Join(html.Keywords, ", "))
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}
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// Access canonical URL (renamed from canonical)
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if html.CanonicalURL != nil {
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fmt.Printf("Canonical URL: %s\n", *html.CanonicalURL)
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}
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// Access Open Graph fields from map
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if len(html.OpenGraph) > 0 {
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if image, ok := html.OpenGraph["image"]; ok {
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fmt.Printf("Open Graph Image: %s\n", image)
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}
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if ogTitle, ok := html.OpenGraph["title"]; ok {
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fmt.Printf("Open Graph Title: %s\n", ogTitle)
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}
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if ogType, ok := html.OpenGraph["type"]; ok {
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fmt.Printf("Open Graph Type: %s\n", ogType)
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}
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}
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// Access Twitter Card fields from map
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if len(html.TwitterCard) > 0 {
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if card, ok := html.TwitterCard["card"]; ok {
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fmt.Printf("Twitter Card Type: %s\n", card)
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}
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if creator, ok := html.TwitterCard["creator"]; ok {
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fmt.Printf("Twitter Creator: %s\n", creator)
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}
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}
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// Access new fields
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if html.Language != nil {
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fmt.Printf("Language: %s\n", *html.Language)
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}
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if html.TextDirection != nil {
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fmt.Printf("Text Direction: %s\n", *html.TextDirection)
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}
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// Access headers
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if len(html.Headers) > 0 {
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headers := make([]string, len(html.Headers))
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for i, h := range html.Headers {
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headers[i] = h.Text
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}
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fmt.Printf("Headers: %s\n", strings.Join(headers, ", "))
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}
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// Access links
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if len(html.Links) > 0 {
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for _, link := range html.Links {
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fmt.Printf("Link: %s (%s)\n", link.Href, link.Text)
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}
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}
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// Access images
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if len(html.Images) > 0 {
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for _, image := range html.Images {
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fmt.Printf("Image: %s\n", image.Src)
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}
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}
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// Access structured data
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if len(html.StructuredData) > 0 {
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fmt.Printf("Structured data items: %d\n", len(html.StructuredData))
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}
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}
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}
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```
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