In Rust version: moved QrCode.to_svg_string() out of the library and into the runnable demo program, slightly adapted some code, updated documentation comments.

Readme.markdown

@@ -158,7 +158,7 @@ Rust language:
     // Simple operation
     let qr = QrCode::encode_text("Hello, world!",
         QrCodeEcc::Medium).unwrap();
-    let svg = qr.to_svg_string(4);
+    let svg = to_svg_string(&qr, 4);  // See qrcodegen-demo
     
     // Manual operation
     let chrs: Vec<char> = "3141592653589793238462643383".chars().collect();

rust/Readme.markdown

@@ -18,7 +18,7 @@ Core features:
 * Available in 6 programming languages, all with nearly equal functionality: Java, TypeScript/JavaScript, Python, Rust, C++, C
 * Significantly shorter code but more documentation comments compared to competing libraries
 * Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
-* Output formats: Raw modules/pixels of the QR symbol, SVG XML string
+* Output format: Raw modules/pixels of the QR symbol
 * Detects finder-like penalty patterns more accurately than other implementations
 * Encodes numeric and special-alphanumeric text in less space than general text
 * Open source code under the permissive MIT License
@@ -42,7 +42,7 @@ Examples
     // Simple operation
     let qr = QrCode::encode_text("Hello, world!",
         QrCodeEcc::Medium).unwrap();
-    let svg = qr.to_svg_string(4);
+    let svg = to_svg_string(&qr, 4);  // See qrcodegen-demo
     
     // Manual operation
     let chrs: Vec<char> = "3141592653589793238462643383".chars().collect();

rust/examples/qrcodegen-demo.rs

@@ -52,7 +52,7 @@ fn do_basic_demo() {
 	// Make and print the QR Code symbol
 	let qr: QrCode = QrCode::encode_text(text, errcorlvl).unwrap();
 	print_qr(&qr);
-	println!("{}", qr.to_svg_string(4));
+	println!("{}", to_svg_string(&qr, 4));
 }
 
 
@@ -163,6 +163,35 @@ fn do_mask_demo() {
 
 /*---- Utilities ----*/
 
+// Returns a string of SVG code for an image depicting
+// the given QR Code, with the given number of border modules.
+// The string always uses Unix newlines (\n), regardless of the platform.
+fn to_svg_string(qr: &QrCode, border: i32) -> String {
+	assert!(border >= 0, "Border must be non-negative");
+	let mut result = String::new();
+	result += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+	result += "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n";
+	let dimension = qr.size().checked_add(border.checked_mul(2).unwrap()).unwrap();
+	result += &format!(
+		"<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" viewBox=\"0 0 {0} {0}\" stroke=\"none\">\n", dimension);
+	result += "\t<rect width=\"100%\" height=\"100%\" fill=\"#FFFFFF\"/>\n";
+	result += "\t<path d=\"";
+	for y in 0 .. qr.size() {
+		for x in 0 .. qr.size() {
+			if qr.get_module(x, y) {
+				if x != 0 || y != 0 {
+					result += " ";
+				}
+				result += &format!("M{},{}h1v1h-1z", x + border, y + border);
+			}
+		}
+	}
+	result += "\" fill=\"#000000\"/>\n";
+	result += "</svg>\n";
+	result
+}
+
+
 // Prints the given QrCode object to the console.
 fn print_qr(qr: &QrCode) {
 	let border: i32 = 4;

rust/src/lib.rs

@@ -38,7 +38,7 @@
 //! - Available in 6 programming languages, all with nearly equal functionality: Java, TypeScript/JavaScript, Python, Rust, C++, C
 //! - Significantly shorter code but more documentation comments compared to competing libraries
 //! - Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
-//! - Output formats: Raw modules/pixels of the QR symbol, SVG XML string
+//! - Output format: Raw modules/pixels of the QR symbol
 //! - Detects finder-like penalty patterns more accurately than other implementations
 //! - Encodes numeric and special-alphanumeric text in less space than general text
 //! - Open source code under the permissive MIT License
@@ -64,7 +64,7 @@
 //! ```
 //! let qr = QrCode::encode_text("Hello, world!",
 //!     QrCodeEcc::Medium).unwrap();
-//! let svg = qr.to_svg_string(4);
+//! let svg = to_svg_string(&qr, 4);  // See qrcodegen-demo
 //! ```
 //! 
 //! Manual operation:
@@ -368,36 +368,6 @@ impl QrCode {
 	}
 	
 	
-	/// Returns a string of SVG code for an image depicting
-	/// this QR Code, with the given number of border modules.
-	/// 
-	/// The string always uses Unix newlines (\n), regardless of the platform.
-	pub fn to_svg_string(&self, border: i32) -> String {
-		assert!(border >= 0, "Border must be non-negative");
-		let mut result = String::new();
-		result += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
-		result += "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n";
-		let dimension = self.size.checked_add(border.checked_mul(2).unwrap()).unwrap();
-		result += &format!(
-			"<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" viewBox=\"0 0 {0} {0}\" stroke=\"none\">\n", dimension);
-		result += "\t<rect width=\"100%\" height=\"100%\" fill=\"#FFFFFF\"/>\n";
-		result += "\t<path d=\"";
-		for y in 0 .. self.size {
-			for x in 0 .. self.size {
-				if self.get_module(x, y) {
-					if x != 0 || y != 0 {
-						result += " ";
-					}
-					result += &format!("M{},{}h1v1h-1z", x + border, y + border);
-				}
-			}
-		}
-		result += "\" fill=\"#000000\"/>\n";
-		result += "</svg>\n";
-		result
-	}
-	
-	
 	/*---- Private helper methods for constructor: Drawing function modules ----*/
 	
 	// Reads this object's version field, and draws and marks all function modules.