Add space between Chinese charactors and numbers and letters

addBlank.js

// Usage:
//     `node /path/to/addBlank.js /path/to/inputfilename`
//     `node /path/to/addBlank.js /path/to/inputfilename > /path/to/outputfilename`
// 
// Forked from https://addons.mozilla.org/EN-us/firefox/addon/中文格式/

var fs = require("fs");
var text = fs.readFileSync(process.argv[2],"utf-8");
var newText = ""
var lastType = 0;
for (var i = 0; i < text.length; i ++) {
    var char = text.charAt(i);
    if ((char >= '\u4E00' && char <= '\u9FA5')
        || (char >= '\uFE30' && char <= '\uFFA0' && false)) { // don't insert space between punctuations and numbers and letters
        if (lastType == -1) {
            newText += ' ';
        }
        lastType = 1;
    } else if ((char >= '0' && char <= '9')
                || (char >= 'A' && char <= 'Z')
                || (char >= 'a' && char <= 'z')) {
        if (lastType == 1) {
            newText += ' ';
        }
        lastType = -1;
    } else {
        lastType = 0;
    }
    newText += char;
}
console.log(newText);