cpp-json/json_common.cpp

//
//  json_binder.cpp
//  json
//
//  Created by Sam Jaffe on 4/23/16.
//

#include "json_common.h"

namespace json {
  namespace helper {
    namespace {
      std::string get_no_end_error(char expected, char found) {
        char str[64] = { '\0' };
        snprintf(str, sizeof(str),
                 "Expected delimeter: ',' or '%c', got '%c' instead",
                 expected, found);
        return str;
      }
    }

    const char get_next_element(char const*& data) {
      while (isspace(*data)) ++data;
      return *data;
    }
    
    void advance_to_boundary(char const endtok, char const*& data) {
      char const next = get_next_element(data);
      if (next == ',') {
        ++data;
      } else if (next != endtok) {
        throw json::malformed_json_exception(get_no_end_error(endtok, *data));
      }
    }
    
    std::string parse_string(char const * & data) {
      char const* start = data;
      while (*++data) {
        if (*data == '"' && *(data-1) != '\\') {
          return std::string(start+1, data++);
        }
      }
      throw json::malformed_json_exception("Could not locate end of string");
    }
  }
}