ccsay/src/index.ts

A joke CLI tool that displays text in ASCII art like cowsay

#!/usr/bin/env bun
import { textToAsciiArt } from "./fonts";

export function main() {
  const args = process.argv.slice(2);

  // Rejoin args, looking for separated \n sequences
  let rawText: string;
  if (args.length === 0) {
    // Check if stdin has data (piped input)
    if (!process.stdin.isTTY) {
      // Read from stdin
      let stdinData = "";
      process.stdin.setEncoding('utf8');
      process.stdin.on('data', (chunk) => {
        stdinData += chunk;
      });
      process.stdin.on('end', () => {
        const text = stdinData.trim();
        const asciiArt = textToAsciiArt(text);
        console.log(`\x1b[38;5;208m${asciiArt}\x1b[0m`);
      });
      return;
    }
    rawText = "CLAUDE\nCODE";
  } else {
    const parts: string[] = [];
    for (let i = 0; i < args.length; i++) {
      const currentArg = args[i];
      if (!currentArg) continue;

      if (i > 0 && currentArg.startsWith("n")) {
        const prevArg = args[i - 1];
        if (prevArg?.endsWith("\\")) {
          // Remove the trailing \ from previous part and add \n
          if (parts.length > 0) {
            const lastPart = parts[parts.length - 1];
            if (lastPart) {
              parts[parts.length - 1] = lastPart.slice(0, -1);
            }
          }
          parts.push(`\\n${currentArg.slice(1)}`);
          continue;
        }
      }
      parts.push(currentArg);
    }
    rawText = parts.join(" ");
  }

  // Handle literal \n in command line arguments
  const text = rawText.replace(/\\n/g, "\n");

  const asciiArt = textToAsciiArt(text);
  console.log(`\x1b[38;5;208m${asciiArt}\x1b[0m`);
}

// Run when this file is executed directly
if (import.meta.main) {
  main();
}