util.js

'use strict';
var path = require('path'),
    fs = require('fs');

function escapeRegExp(str){

  return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
}

function rewrite(args){
  /* jshint -W044 */
  // check if splicable is already in the body text
  var re = new RegExp(args.splicable.map(function (line){

    return '\s*' + escapeRegExp(line);
  }).join('\n'));

  if(re.test(args.haystack)){

    return args.haystack;
  }

  var lines = args.haystack.split('\n');

  var otherwiseLineIndex = 0;
  lines.forEach(function (line, i){
    if(line.indexOf(args.needle) !== -1){
      otherwiseLineIndex = i;
    }
  });

  var spaces = 0;
  while(lines[otherwiseLineIndex].charAt(spaces) === ' '){
    spaces += 1;
  }

  var spaceStr = '';
  while((spaces -= 1) >= 0){
    spaceStr += ' ';
  }

  lines.splice(otherwiseLineIndex, 0, args.splicable.map(function (line){
    return spaceStr + line;
  }).join('\n'));

  return lines.join('\n');
}

function rewriteFile(args){
  args.path = args.path || process.cwd();
  var fullPath = path.join(args.path, args.file);

  args.haystack = fs.readFileSync(fullPath, 'utf8');
  var body = rewrite(args);

  fs.writeFileSync(fullPath, body);
}

function appName(self){
  var counter = 0, suffix = self.options['app-suffix'];
  // Have to check this because of generator bug #386
  process.argv.forEach(function(val){
    if(val.indexOf('--app-suffix') > -1){
      counter++;
    }
  });
  if(counter === 0 || (typeof suffix === 'boolean' && suffix)){
    suffix = 'App';
  }

  return suffix ? self._.classify(suffix) : '';
}

module.exports = {
  rewrite: rewrite,
  rewriteFile: rewriteFile,
  appName: appName
};