Add working examples for Aspose.PDF for Rust via C++

Author: OleksandrAndriienko

examples/extract_text.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document with filename
+    let pdf = Document::open("sample.pdf")?;
+
+    // Return the PDF-document contents as plain text
+    let txt = pdf.extract_text()?;
+
+    // Print extracted text
+    println!("Extracted text:\n{}", txt);
+
+    Ok(())
+}

examples/grayscale.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document with filename
+    let pdf = Document::open("sample.pdf")?;
+
+    // Convert PDF-document to black and white
+    pdf.grayscale()?;
+
+    // Save the previously opened PDF-document with new filename
+    pdf.save_as("sample_grayscale.pdf")?;
+
+    Ok(())
+}

examples/hello.rs

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+use asposepdf::{Document, PageSize};
+use std::error::Error;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    // Create a new PDF-document
+    let pdf = Document::new()?;
+
+    // Add a new page
+    pdf.page_add()?;
+
+    // Set the size of the first page to A4
+    pdf.page_set_size(1, PageSize::A4)?;
+
+    // Add "Hello World!" text to the first page
+    pdf.page_add_text(1, "Hello World!")?;
+
+    // Save the PDF-document as "hello.pdf"
+    pdf.save_as("hello.pdf")?;
+
+    println!("Saved PDF-document: hello.pdf");
+
+    Ok(())
+}

examples/new.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Create a new PDF-document
+    let pdf = Document::new()?;
+
+    // Save the previously opened PDF-document with new filename
+    pdf.save_as("sample_new.pdf")?;
+
+    Ok(())
+}

examples/open.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document named "sample.pdf"
+    let pdf = Document::open("sample.pdf")?;
+
+    // Save the previously opened PDF-document with new filename
+    pdf.save_as("sample_open.pdf")?;
+
+    Ok(())
+}

examples/optimize.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document with filename
+    let pdf = Document::open("sample.pdf")?;
+
+    // Optimize PDF-document content
+    pdf.optimize()?;
+
+    // Save the previously opened PDF-document with new filename
+    pdf.save_as("sample_optimize.pdf")?;
+
+    Ok(())
+}

examples/optimize_resource.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document with filename
+    let pdf = Document::open("sample.pdf")?;
+
+    // Optimize resources of PDF-document
+    pdf.optimize_resource()?;
+
+    // Save the previously opened PDF-document with new filename
+    pdf.save_as("sample_optimize_resource.pdf")?;
+
+    Ok(())
+}

examples/page_add.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document from file
+    let pdf = Document::open("sample.pdf")?;
+
+    // Add new page in PDF-document
+    pdf.page_add()?;
+
+    // Save the previously opened PDF-document
+    pdf.save()?;
+
+    Ok(())
+}

examples/page_add_text.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document from file
+    let pdf = Document::open("sample.pdf")?;
+
+    // Add text on page
+    pdf.page_add_text(1, "added text")?;
+
+    // Save the previously opened PDF-document
+    pdf.save()?;
+
+    Ok(())
+}

examples/page_count.rs

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+use asposepdf::Document;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Open a PDF-document from file
+    let pdf = Document::open("sample.pdf")?;
+
+    // Return page count in PDF-document
+    let count = pdf.page_count()?;
+
+    // Print the page count
+    println!("Count: {}", count);
+
+    Ok(())
+}