61 lines
2.1 KiB
Markdown
61 lines
2.1 KiB
Markdown
```kotlin title="Kotlin"
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import dev.kreuzberg.*
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import java.nio.file.Paths
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import java.util.Optional
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fun main() {
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val config = ExtractionConfig.builder().build()
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val result = Kreuzberg.extractFileSync(Paths.get("document.pdf"), null, config)
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val metadata = result.metadata()
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metadata.title()?.let { println("Title: $it") }
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metadata.authors()?.let { println("Authors: ${it.joinToString(", ")}") }
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// Format-specific metadata via discriminated union
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metadata.format()?.pdf()?.let { pdf ->
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pdf.pageCount()?.let { println("Pages: $it") }
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pdf.producer()?.let { println("Producer: $it") }
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pdf.pdfVersion()?.let { println("PDF Version: $it") }
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}
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// Access HTML metadata
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val htmlResult = Kreuzberg.extractFileSync(Paths.get("page.html"), null, config)
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htmlResult.metadata().format()?.html()?.let { html ->
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html.title()?.let { println("Title: $it") }
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html.description()?.let { println("Description: $it") }
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html.canonicalUrl()?.let { println("Canonical URL: $it") }
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html.language()?.let { println("Language: $it") }
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// Access keywords list
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println("Keywords: ${html.keywords()}")
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// Open Graph fields are exposed as a Map<String, String>
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html.openGraph()["image"]?.let { println("Open Graph Image: $it") }
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html.openGraph()["title"]?.let { println("Open Graph Title: $it") }
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// Twitter Card fields as a Map<String, String>
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html.twitterCard()["card"]?.let { println("Twitter Card Type: $it") }
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// Headers
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for (header in html.headers()) {
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println("Header (level ${header.level()}): ${header.text()}")
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}
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// Links
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for (link in html.links()) {
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println("Link: ${link.href()} (${link.text()})")
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}
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// Images
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for (image in html.images()) {
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println("Image: ${image.src()}")
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}
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// Structured data
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if (html.structuredData().isNotEmpty()) {
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println("Structured data items: ${html.structuredData().size}")
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}
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}
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}
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```
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