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Diffstat (limited to 'testing/sg_tst_json_builder.c')
| -rw-r--r-- | testing/sg_tst_json_builder.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/testing/sg_tst_json_builder.c b/testing/sg_tst_json_builder.c new file mode 100644 index 00000000..0637e30b --- /dev/null +++ b/testing/sg_tst_json_builder.c @@ -0,0 +1,160 @@ +// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) +/* + * Simple streaming JSON writer + * + * This takes care of the annoying bits of JSON syntax like the commas + * after elements + * + * Authors: Stephen Hemminger <stephen@networkplumber.org> + * + * Borrowed from Linux kernel [5.17.0]: tools/bpf/bpftool/json_writer.[hc] + */ + +#include <stdio.h> +#include <stdbool.h> +#include <stdarg.h> +#include <assert.h> +#include <malloc.h> +#include <inttypes.h> +#include <stdint.h> + +#include "../lib/sg_json_builder.h" +#include "sg_pr2serr.h" + +#define MY_NAME "sg_tst_json_builder" + + +static json_serialize_opts out_settings = { + json_serialize_mode_multiline, + 0, + 4 +}; + +int +main(int argc, char * argv[]) +{ + size_t len; + sgj_state jstate; + sgj_state * jstp = &jstate; + json_value * jv1p; + json_value * jv2p; + json_value * jv3p = json_object_new(0); + json_value * jvp = NULL; + json_value * jv4p; + json_value * jv5p; + json_value * ja1p = json_array_new(0); + json_value * ja2p; + json_value * jsp = json_string_new("hello world 1"); + json_value * js2p = json_string_new("hello world 2"); + json_value * js3p = json_string_new("hello world 3"); + json_value * js10 = json_string_new("good-bye world"); + json_value * js11 = json_string_new("good-bye world 2"); + json_value * js12 = json_string_new("duplicate name 1"); + char b[8192]; + + sgj_init_state(jstp, NULL); + jvp = sgj_start_r(MY_NAME, "0.02 20220503", argc, argv, jstp); + jv1p = json_object_push(jvp, "contents", jsp); + + if (jvp == jv1p) + printf("jvp == jv1p\n"); + else + printf("jvp != jv1p\n"); + +#if 1 + json_array_push(ja1p, js2p); + jv2p = json_object_push(jvp, "extra", js3p); + if (jv2p) + printf("jv2p->type=%d\n", jv2p->type); + else + printf("jv2p is NULL\n"); + ja2p = json_array_push(ja1p, json_string_new( + "test double quote, etc: \" world \\ 99\t\ttwo tabs")); + if (ja2p) + printf("ja2p->type=%d\n", ja2p->type); + else + printf("ja2p is NULL\n"); + // json_object_push(ja2p, "boo", json_string_new("hello world 88")); + json_object_push(jvp, "a_array", ja1p); + jv4p = json_object_push(jvp, "a_object", jv3p); + if (jv4p) + printf("jv4p->type=%d\n", jv4p->type); + else + printf("jv4p is NULL\n"); + json_object_push(jv4p, "test", js10); + json_object_push(jv4p, "test2", js11); + json_object_push(jv4p, "test", js12); + // ja3p = json_array_push(ja2p, json_string_new("good-bye")); + // jv4p = json_object_push(jvp, "a_array", ja2p); + // jv5p = json_object_merge(jvp, ja1p); +#endif + jv5p = jvp; + + len = json_measure_ex(jv5p, out_settings); + printf("jvp length: %zu bytes\n", len); + if (len < sizeof(b)) { + json_serialize_ex(b, jv5p, out_settings); + printf("json serialized:\n"); + printf("%s\n", b); + } else + printf("since json output length [%zu] > 8192, skip outputting\n", + len); + + json_builder_free(jvp); + return 0; +} + + +#if 0 +int main(int argc, char **argv) +{ + json_writer_t *wr = jsonw_new(stdout); + + jsonw_start_object(wr); + jsonw_pretty(wr, true); + jsonw_name(wr, "Vyatta"); + jsonw_start_object(wr); + jsonw_string_field(wr, "url", "http://vyatta.com"); + jsonw_uint_field(wr, "downloads", 2000000ul); + jsonw_float_field(wr, "stock", 8.16); + + jsonw_name(wr, "ARGV"); + jsonw_start_array(wr); + while (--argc) + jsonw_string(wr, *++argv); + jsonw_end_array(wr); + + jsonw_name(wr, "empty"); + jsonw_start_array(wr); + jsonw_end_array(wr); + + jsonw_name(wr, "NIL"); + jsonw_start_object(wr); + jsonw_end_object(wr); + + jsonw_null_field(wr, "my_null"); + + jsonw_name(wr, "special chars"); + jsonw_start_array(wr); + jsonw_string_field(wr, "slash", "/"); + jsonw_string_field(wr, "newline", "\n"); + jsonw_string_field(wr, "tab", "\t"); + jsonw_string_field(wr, "ff", "\f"); + jsonw_string_field(wr, "quote", "\""); + jsonw_string_field(wr, "tick", "\'"); + jsonw_string_field(wr, "backslash", "\\"); + jsonw_end_array(wr); + +jsonw_name(wr, "ARGV"); +jsonw_start_array(wr); +jsonw_string(wr, "boo: appended or new entry?"); +jsonw_end_array(wr); + + jsonw_end_object(wr); + + jsonw_end_object(wr); + jsonw_destroy(&wr); + return 0; +} + +#endif |