Add simple example just for checking validity of schemas

CMakeLists.txt

@@ -231,6 +231,10 @@ if(valijson_BUILD_EXAMPLES)
         examples/array_iteration_template_fn.cpp
     )
 
+    add_executable(check_schema
+        examples/check_schema.cpp
+    )
+
     add_executable(object_iteration
         examples/object_iteration.cpp
     )
@@ -265,6 +269,7 @@ if(valijson_BUILD_EXAMPLES)
     target_link_libraries(external_schema ${Boost_LIBRARIES})
     target_link_libraries(array_iteration_basics jsoncpp)
     target_link_libraries(array_iteration_template_fn jsoncpp)
+    target_link_libraries(check_schema jsoncpp)
     target_link_libraries(object_iteration jsoncpp)
     target_link_libraries(json_pointers)
 endif()

examples/check_schema.cpp

@@ -0,0 +1,48 @@
+/**
+ * @file
+ *
+ * @brief Loads a schema then exits. Exit code will be 0 if the schema is
+ *        valid, and 1 otherwise. This example uses jsoncpp to parse the
+ *        schema document.
+ */
+
+#include <iostream>
+
+#include <valijson/adapters/jsoncpp_adapter.hpp>
+#include <valijson/utils/jsoncpp_utils.hpp>
+#include <valijson/schema.hpp>
+#include <valijson/schema_parser.hpp>
+
+using std::cerr;
+using std::endl;
+
+using valijson::Schema;
+using valijson::SchemaParser;
+using valijson::adapters::JsonCppAdapter;
+
+int main(int argc, char *argv[])
+{
+    if (argc != 2) {
+        cerr << "Usage: " << argv[0] << " <schema document>" << endl;
+        return 1;
+    }
+
+    // Load the document containing the schema
+    Json::Value schemaDocument;
+    if (!valijson::utils::loadDocument(argv[1], schemaDocument)) {
+        cerr << "Failed to load schema document." << endl;
+        return 1;
+    }
+
+    Schema schema;
+    SchemaParser parser;
+    JsonCppAdapter adapter(schemaDocument);
+    try {
+        parser.populateSchema(adapter, schema);
+    } catch (std::exception &e) {
+        cerr << "Failed to parse schema: " << e.what() << endl;
+        return 1;
+    }
+
+    return 0;
+}