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