Add demo package for visual inspection of syntax highlighting

demo/hello_world_demo.go

@@ -0,0 +1,139 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"strings"
+
+	"github.com/rwinkhart/go-highlite/ansi"
+)
+
+func main() {
+	// Slice of strings containing Hello World examples for different languages
+	helloWorldExamples := []struct {
+		language string
+		code     string
+	}{
+		{
+			language: "go",
+			code: `// Hello World in Go
+package main
+
+import "fmt"
+
+func main() {
+    fmt.Println("Hello, World!")
+}`,
+		},
+		{
+			language: "python",
+			code: `# Hello World in Python
+print("Hello, World!")`,
+		},
+		{
+			language: "java",
+			code: `// Hello World in Java
+public class HelloWorld {
+    public static void main(String[] args) {
+        System.out.println("Hello, World!");
+    }
+}`,
+		},
+		{
+			language: "c",
+			code: `// Hello World in C
+#include <stdio.h>
+
+int main() {
+    printf("Hello, World!\n");
+    return 0;
+}`,
+		},
+		{
+			language: "cpp",
+			code: `// Hello World in C++
+#include <iostream>
+
+int main() {
+    std::cout << "Hello, World!" << std::endl;
+    return 0;
+}`,
+		},
+		{
+			language: "js",
+			code: `// Hello World in JavaScript
+console.log("Hello, World!");`,
+		},
+		{
+			language: "rust",
+			code: `// Hello World in Rust
+fn main() {
+    println!("Hello, World!");
+}`,
+		},
+		{
+			language: "ruby",
+			code: `# Hello World in Ruby
+puts "Hello, World!"`,
+		},
+		{
+			language: "php",
+			code: `<?php
+// Hello World in PHP
+echo "Hello, World!\n";
+?>`,
+		},
+		{
+			language: "swift",
+			code: `// Hello World in Swift
+print("Hello, World!")`,
+		},
+		{
+			language: "scala",
+			code: `// Hello World in Scala
+object HelloWorld {
+  def main(args: Array[String]): Unit = {
+    println("Hello, World!")
+  }
+}`,
+		},
+		{
+			language: "haskell",
+			code: `-- Hello World in Haskell
+main :: IO ()
+main = putStrLn "Hello, World!"`,
+		},
+		{
+			language: "perl",
+			code: `# Hello World in Perl
+print "Hello, World!\n";`,
+		},
+		{
+			language: "lua",
+			code: `-- Hello World in Lua
+print("Hello, World!")`,
+		},
+		{
+			language: "shell",
+			code: `#!/bin/bash
+# Hello World in Shell
+echo "Hello, World!"`,
+		},
+	}
+
+	fmt.Print("=== Go-Highlite Demo: Hello World Examples ===\n\n")
+
+	for _, example := range helloWorldExamples {
+		fmt.Printf("Language: %s\n\n", example.language)
+
+		colorized, err := ansi.Colorize(example.code, example.language)
+		if err != nil {
+			log.Printf("Error colorizing %s: %v\n", example.language, err)
+			fmt.Println("(Unable to highlight this code)")
+		} else {
+			fmt.Println(colorized)
+		}
+
+		fmt.Println("\n" + strings.Repeat("-", 50) + "\n")
+	}
+}