JavaScript Word Wrap

wordwrap.js

/**
 * Wrap text to a maximum of 78 char per line. Indent the text using the number
 * of spaces specified by indent.
 */
function wrap(text, indent) {

    if (!text) {
        console.log();
        return;
    }
    
    var col = 0;
    var words = text.split(/ /g);
    var firstWord = true;

    for (var i = 0; i < words.length; i++) {

        if (col == 0) {
            firstWord = true;
            if (indent) {
                for (var j = 0; j < indent; j++) {
                    process.stdout.write(" ");
                    col++;
                }
            }
        }

        var word = words[i];
        if ((col + word.length) > 78) {
            console.log();
            col = 0;
            i--;
        } else {
            if (!firstWord) {
                process.stdout.write(" ");
                col++;
            }
            process.stdout.write(word);
            col += word.length;
            firstWord = false;
        }
    }

    console.log();
}