hphp/compiler/json.cpp

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-2014 Facebook, Inc. (http://www.facebook.com)     |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #include "hphp/compiler/json.h"
  18
  19 namespace HPHP { namespace JSON {
  20 ///////////////////////////////////////////////////////////////////////////////
  21 // statics
  22
  23 std::string Escape(const char *s) {
  24   std::string ret;
  25   char hex[3];
  26   for (const char *p = s; *p; p++) {
  27     switch (*p) {
  28     case '\r': ret += "\\r";  break;
  29     case '\n': ret += "\\n";  break;
  30     case '\t': ret += "\\t";  break;
  31     case '/':  ret += "\\/";  break;
  32     case '\"': ret += "\\\""; break;
  33     case '\\': ret += "\\\\"; break;
  34     default:
  35       if (*p < ' ') {
  36         snprintf(hex, sizeof(hex), "%02x", *p);
  37         ret += "\\u00" + std::string(hex);
  38       } else {
  39         ret += *p;
  40       }
  41       break;
  42     }
  43   }
  44   return ret;
  45 }
  46 }}