#include #include #include #include #ifdef NDEBUG #undef NDEBUG #endif #include #include #include #include "json.h" #include "printbuf.h" static void do_benchmark(json_object *src1); static const char *json_str1 = "{" " \"glossary\": {" " \"title\": \"example glossary\"," " \"GlossDiv\": {" " \"number\": 16446744073709551615," " \"title\": \"S\"," " \"null_obj\": null, " " \"exixt\": false," " \"quantity\":20," " \"univalent\":19.8," " \"GlossList\": {" " \"GlossEntry\": {" " \"ID\": \"SGML\"," " \"SortAs\": \"SGML\"," " \"GlossTerm\": \"Standard Generalized Markup Language\"," " \"Acronym\": \"SGML\"," " \"Abbrev\": \"ISO 8879:1986\"," " \"GlossDef\": {" " \"para\": \"A meta-markup language, used to create markup languages " "such as DocBook.\"," " \"GlossSeeAlso\": [\"GML\", \"XML\"]" " }," " \"GlossSee\": \"markup\"" " }" " }" " }" " }" "}"; static const char *json_str2 = "{\"menu\": {" " \"header\": \"SVG Viewer\"," " \"items\": [" " {\"id\": \"Open\"}," " {\"id\": \"OpenNew\", \"label\": \"Open New\"}," " null," " {\"id\": \"ZoomIn\", \"label\": \"Zoom In\"}," " {\"id\": \"ZoomOut\", \"label\": \"Zoom Out\"}," " {\"id\": \"OriginalView\", \"label\": \"Original View\"}," " null," " {\"id\": \"Quality\", \"another_null\": null}," " {\"id\": \"Pause\"}," " {\"id\": \"Mute\"}," " null," " {\"id\": \"Find\", \"label\": \"Find...\"}," " {\"id\": \"FindAgain\", \"label\": \"Find Again\"}," " {\"id\": \"Copy\"}," " {\"id\": \"CopyAgain\", \"label\": \"Copy Again\"}," " {\"id\": \"CopySVG\", \"label\": \"Copy SVG\"}," " {\"id\": \"ViewSVG\", \"label\": \"View SVG\"}," " {\"id\": \"ViewSource\", \"label\": \"View Source\"}," " {\"id\": \"SaveAs\", \"label\": \"Save As\"}," " null," " {\"id\": \"Help\"}," " {\"id\": \"About\", \"label\": \"About Adobe CVG Viewer...\"}" " ]" "}}"; static const char *json_str3 = "{\"menu\": {" " \"id\": \"file\"," " \"value\": \"File\"," " \"popup\": {" " \"menuitem\": [" " {\"value\": \"New\", \"onclick\": \"CreateNewDoc()\"}," " {\"value\": \"Open\", \"onclick\": \"OpenDoc()\"}," " {\"value\": \"Close\", \"onclick\": \"CloseDoc()\"}" " ]" " }" "}}"; json_object_to_json_string_fn my_custom_serializer; int my_custom_serializer(struct json_object *jso, struct printbuf *pb, int level, int flags) { sprintbuf(pb, "OTHER"); return 0; } json_c_shallow_copy_fn my_shallow_copy; int my_shallow_copy(json_object *src, json_object *parent, const char *key, size_t index, json_object **dst) { int rc; rc = json_c_shallow_copy_default(src, parent, key, index, dst); if (rc < 0) return rc; if (key != NULL && strcmp(key, "with_serializer") == 0) { printf("CALLED: my_shallow_copy on with_serializer object\n"); void *userdata = json_object_get_userdata(src); json_object_set_serializer(*dst, my_custom_serializer, userdata, NULL); return 2; } return rc; } int main(int argc, char **argv) { struct json_object *src1, *src2, *src3; struct json_object *dst1 = NULL, *dst2 = NULL, *dst3 = NULL; int benchmark = 0; if (argc > 1 && strcmp(argv[1], "--benchmark") == 0) { benchmark = 1; } src1 = json_tokener_parse(json_str1); src2 = json_tokener_parse(json_str2); src3 = json_tokener_parse(json_str3); assert(src1 != NULL); assert(src2 != NULL); assert(src3 != NULL); printf("PASSED - loaded input data\n"); /* do this 3 times to make sure overwriting it works */ assert(0 == json_object_deep_copy(src1, &dst1, NULL)); assert(0 == json_object_deep_copy(src2, &dst2, NULL)); assert(0 == json_object_deep_copy(src3, &dst3, NULL)); printf("PASSED - all json_object_deep_copy() returned succesful\n"); assert(-1 == json_object_deep_copy(src1, &dst1, NULL)); assert(errno == EINVAL); assert(-1 == json_object_deep_copy(src2, &dst2, NULL)); assert(errno == EINVAL); assert(-1 == json_object_deep_copy(src3, &dst3, NULL)); assert(errno == EINVAL); printf("PASSED - all json_object_deep_copy() returned EINVAL for non-null pointer\n"); assert(1 == json_object_equal(src1, dst1)); assert(1 == json_object_equal(src2, dst2)); assert(1 == json_object_equal(src3, dst3)); printf("PASSED - all json_object_equal() tests returned succesful\n"); assert(0 == strcmp(json_object_to_json_string_ext(src1, JSON_C_TO_STRING_PRETTY), json_object_to_json_string_ext(dst1, JSON_C_TO_STRING_PRETTY))); assert(0 == strcmp(json_object_to_json_string_ext(src2, JSON_C_TO_STRING_PRETTY), json_object_to_json_string_ext(dst2, JSON_C_TO_STRING_PRETTY))); assert(0 == strcmp(json_object_to_json_string_ext(src3, JSON_C_TO_STRING_PRETTY), json_object_to_json_string_ext(dst3, JSON_C_TO_STRING_PRETTY))); printf("PASSED - comparison of string output\n"); json_object_get(dst1); assert(-1 == json_object_deep_copy(src1, &dst1, NULL)); assert(errno == EINVAL); json_object_put(dst1); printf("PASSED - trying to overrwrite an object that has refcount > 1"); printf("\nPrinting JSON objects for visual inspection\n"); printf("------------------------------------------------\n"); printf(" JSON1\n"); printf("%s\n", json_object_to_json_string_ext(dst1, JSON_C_TO_STRING_PRETTY)); printf("------------------------------------------------\n"); printf("------------------------------------------------\n"); printf(" JSON2\n"); printf("%s\n", json_object_to_json_string_ext(dst2, JSON_C_TO_STRING_PRETTY)); printf("------------------------------------------------\n"); printf("------------------------------------------------\n"); printf(" JSON3\n"); printf("------------------------------------------------\n"); printf("%s\n", json_object_to_json_string_ext(dst3, JSON_C_TO_STRING_PRETTY)); printf("------------------------------------------------\n"); json_object_put(dst1); json_object_put(dst2); json_object_put(dst3); printf("\nTesting deep_copy with a custom serializer set\n"); json_object *with_serializer = json_object_new_string("notemitted"); char udata[] = "dummy userdata"; json_object_set_serializer(with_serializer, my_custom_serializer, udata, NULL); json_object_object_add(src1, "with_serializer", with_serializer); dst1 = NULL; /* With a custom serializer in use, a custom shallow_copy function must also be used */ assert(-1 == json_object_deep_copy(src1, &dst1, NULL)); assert(0 == json_object_deep_copy(src1, &dst1, my_shallow_copy)); json_object *dest_with_serializer = json_object_object_get(dst1, "with_serializer"); assert(dest_with_serializer != NULL); char *dst_userdata = json_object_get_userdata(dest_with_serializer); assert(strcmp(dst_userdata, "dummy userdata") == 0); const char *special_output = json_object_to_json_string(dest_with_serializer); assert(strcmp(special_output, "OTHER") == 0); printf("\ndeep_copy with custom serializer worked OK.\n"); json_object_put(dst1); if (benchmark) { do_benchmark(src2); } json_object_put(src1); json_object_put(src2); json_object_put(src3); return 0; } static void do_benchmark(json_object *src2) { json_object *dst2 = NULL; int ii; /** * The numbers that I got are: * BENCHMARK - 1000000 iterations of 'dst2 = json_tokener_parse(json_object_get_string(src2))' took 71 seconds * BENCHMARK - 1000000 iterations of 'json_object_deep_copy(src2, &dst2, NULL)' took 29 seconds */ int iterations = 1000000; time_t start = time(NULL); start = time(NULL); for (ii = 0; ii < iterations; ii++) { dst2 = json_tokener_parse(json_object_get_string(src2)); json_object_put(dst2); } printf("BENCHMARK - %d iterations of 'dst2 = " "json_tokener_parse(json_object_get_string(src2))' took %d seconds\n", iterations, (int)(time(NULL) - start)); start = time(NULL); dst2 = NULL; for (ii = 0; ii < iterations; ii++) { json_object_deep_copy(src2, &dst2, NULL); json_object_put(dst2); dst2 = NULL; } printf("BENCHMARK - %d iterations of 'json_object_deep_copy(src2, &dst2, NULL)' took %d " "seconds\n", iterations, (int)(time(NULL) - start)); }