ascii_query::json Namespace Reference

Data Structures
class	JsonArray
	JSON array builder. More...
class	JsonObject
	JSON object builder. More...
class	JsonValue
	JSON value wrapper (can hold any JSON type) More...

Functions
std::string	escape (const std::string &str)
	Escape a string for JSON output.

Function Documentation

escape()

std::string ascii_query::json::escape ( const std::string &  str )

inline

Escape a string for JSON output.

Definition at line 30 of file json.h.

                                              {
  std::string result;
  result.reserve(str.size() + 16);
 
  for (char c : str) {
    switch (c) {
    case '"':
      result += "\\\"";
      break;
    case '\\':
      result += "\\\\";
      break;
    case '\b':
      result += "\\b";
      break;
    case '\f':
      result += "\\f";
      break;
    case '\n':
      result += "\\n";
      break;
    case '\r':
      result += "\\r";
      break;
    case '\t':
      result += "\\t";
      break;
    default:
      if (static_cast<unsigned char>(c) < 0x20) {
        // Control character - escape as \uXXXX
        char buf[8];
        snprintf(buf, sizeof(buf), "\\u%04x", static_cast<unsigned char>(c));
        result += buf;
      } else {
        result += c;
      }
      break;
    }
  }
 
  return result;
}

Referenced by ascii_query::HttpResponse::badRequest(), ascii_query::HttpResponse::notFound(), ascii_query::HttpResponse::serverError(), ascii_query::json::JsonValue::toString(), and ascii_query::json::JsonObject::toString().