45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
#include "simdjson.h"
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#include <iostream>
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int main(int argc, char *argv[]) {
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if (argc < 3) {
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std::cerr << "Usage: " << argv[0] << " <jsonfile> <jsonpath>" << std::endl;
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std::cerr << "Follows the rfc6901 standard's syntax: "
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"https://tools.ietf.org/html/rfc6901"
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<< std::endl;
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std::cerr << " Example: " << argv[0]
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<< " jsonexamples/small/demo.json /Image/Width /Image/Height "
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"/Image/IDs/2 "
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<< std::endl;
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std::cerr << "Multiple <jsonpath> can be issued in the same command, but "
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"at least one is needed."
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<< std::endl;
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exit(1);
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}
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const char *filename = argv[1];
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simdjson::dom::parser parser;
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auto [doc, error] = parser.load(filename);
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if (error) { std::cerr << "Error parsing " << filename << ": " << error << std::endl; }
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std::cout << "[" << std::endl;
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for (int idx = 2; idx < argc; idx++) {
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const char *json_pointer = argv[idx];
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auto [value, pointer_error] = doc[json_pointer];
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std::cout << "{\"jsonpath\": \"" << json_pointer << "\"";
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if (pointer_error) {
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std::cout << ",\"error\":\"" << pointer_error << "\"";
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} else {
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std::cout << ",\"value\":" << value;
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}
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std::cout << "}";
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if (idx + 1 < argc) {
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std::cout << ",";
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}
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std::cout << std::endl;
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}
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std::cout << "]" << std::endl;
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return EXIT_SUCCESS;
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}
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