valijson/examples/external_schema.cpp
Tristan Penman 4c9864de73 Initial commit.
This commit contains the third major design of a C++ library for JSON Schema validation.

It is definitely not what I would consider production-ready, but I do think that the overall design of the library is robust.
2013-10-30 07:51:11 +11:00

76 lines
2.1 KiB
C++

/**
* @file
*
* @brief Demonstrates validation against a schema loaded from a file.
*
*/
#include <fstream>
#include <iostream>
#include <stdexcept>
#include <rapidjson/document.h>
#include <valijson/adapters/rapidjson_adapter.hpp>
#include <valijson/utils/rapidjson_utils.hpp>
#include <valijson/schema.hpp>
#include <valijson/schema_parser.hpp>
#include <valijson/validation_results.hpp>
#include <valijson/validator.hpp>
using std::cerr;
using std::endl;
using valijson::Schema;
using valijson::SchemaParser;
using valijson::Validator;
using valijson::ValidationResults;
using valijson::adapters::RapidJsonAdapter;
int main(int argc, char *argv[])
{
// Load the document containing the schema
rapidjson::Document schemaDocument;
if (!valijson::utils::loadDocument(argv[1], schemaDocument)) {
cerr << "Failed to load schema document." << endl;
return 1;
}
// Load the document that is to be validated
rapidjson::Document targetDocument;
if (!valijson::utils::loadDocument(argv[2], targetDocument)) {
cerr << "Failed to load target document." << endl;
return 1;
}
// Parse the json schema into an internal schema format
Schema schema;
SchemaParser parser;
RapidJsonAdapter schemaDocumentAdapter(schemaDocument);
try {
parser.populateSchema(schemaDocumentAdapter, schema);
} catch (...) {
cerr << "Failed to parse schema." << endl;
return 1;
}
// Perform validation
Validator validator(schema);
validator.setStrict(false);
ValidationResults results;
RapidJsonAdapter targetDocumentAdapter(targetDocument);
if (!validator.validate(targetDocumentAdapter, &results)) {
std::cerr << "Validation failed." << endl;
ValidationResults::Error error;
unsigned int errorNum = 1;
while (results.popError(error)) {
cerr << "Error #" << errorNum << std::endl
<< " context: " << error.context << endl
<< " desc: " << error.description << endl;
++errorNum;
}
return 1;
}
return 0;
}