File: readFromString.cpp

package info (click to toggle)
chromium 89.0.4389.114-1~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 3,388,476 kB
  • sloc: cpp: 19,561,380; javascript: 2,952,268; ansic: 2,261,795; python: 1,396,668; xml: 560,542; java: 490,481; asm: 463,723; objc: 83,151; perl: 76,810; sh: 76,375; cs: 70,715; fortran: 24,137; tcl: 18,916; php: 18,872; makefile: 16,870; ruby: 16,721; pascal: 13,150; sql: 9,521; yacc: 7,497; lex: 1,985; lisp: 840; awk: 190; jsp: 39; sed: 19
file content (37 lines) | stat: -rw-r--r-- 1,094 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
#include "json/json.h"
#include <iostream>
/**
 * \brief Parse a raw string into Value object using the CharReaderBuilder
 * class, or the legacy Reader class.
 * Example Usage:
 * $g++ readFromString.cpp -ljsoncpp -std=c++11 -o readFromString
 * $./readFromString
 * colin
 * 20
 */
int main() {
  const std::string rawJson = R"({"Age": 20, "Name": "colin"})";
  const auto rawJsonLength = static_cast<int>(rawJson.length());
  constexpr bool shouldUseOldWay = false;
  JSONCPP_STRING err;
  Json::Value root;

  if (shouldUseOldWay) {
    Json::Reader reader;
    reader.parse(rawJson, root);
  } else {
    Json::CharReaderBuilder builder;
    const std::unique_ptr<Json::CharReader> reader(builder.newCharReader());
    if (!reader->parse(rawJson.c_str(), rawJson.c_str() + rawJsonLength, &root,
                       &err)) {
      std::cout << "error" << std::endl;
      return EXIT_FAILURE;
    }
  }
  const std::string name = root["Name"].asString();
  const int age = root["Age"].asInt();

  std::cout << name << std::endl;
  std::cout << age << std::endl;
  return EXIT_SUCCESS;
}