exports.scaleImg = function(srcPath, dstPath, scale, cb){
scale = scale || 1;
dstPath = moUtils.changeExtnameToLowerCase(dstPath);
var subDstDir = path.dirname(dstPath);
moUtils.mkdirSync(subDstDir);
moUtils.py(path.join(g_pyDir, "scaleImg.py"), srcPath, dstPath, scale, cb);
};
exports.repack = function(plist, imgDir, cb){
//将plist中的图片路径后缀改为小写
var plistContent = fs.readFileSync(plist).toString();
plistContent = plistContent.replace(/.png/ig, ".png");
plistContent = plistContent.replace(/.jpg/ig, ".jpg");
fs.writeFileSync(plist, plistContent);
var pyPath = path.join(g_pyDir, "repacker.py")
moUtils.py(pyPath, plist, imgDir, cb);
};