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The serializing counterpart to json-parser.

As with json-parser: BSD licensed, almost ANSI C89 apart from a single use of snprintf.

Usage

Quick example (docs coming soon):

json_value * arr = json_array_new(0);
json_array_push(arr, json_string_new("Hello world!"));
json_array_push(arr, json_integer_new(128));

char * buf = malloc(json_measure(arr));
json_serialize(buf, arr);

printf("%s\n", buf);

[ "Hello world!", 128 ]

json-builder is fully interoperable with json-parser:

char json[] = "[ 1, 2, 3 ]";

json_settings settings = {};
settings.value_extra = json_builder_extra;  /* space for json-builder state */

char error[128];
json_value * arr = json_parse_ex(&settings, json, strlen(json), error);

/* Now serialize it again. */
char * buf = malloc(json_measure(arr));
json_serialize(buf, arr);

printf("%s\n", buf);

[ 1, 2, 3 ]

Note that values created by or modified by json-builder must be freed with json_builder_free instead of json_value_free, otherwise the memory of the builder state will be leaked.

Modes

• json_serialize_mode_multiline — Generate multi-line JSON, for example:

[
  1,
  2,
  3
]

• json_serialize_mode_single_line — Generate JSON on a single line, for example:

[ 1, 2, 3 ]

• json_serialize_mode_packed — Generate JSON as tightly packed as possible, for example:

[1,2,3]

Options

• json_serialize_opt_CRLF — use CR/LF (Windows) line endings

• json_serialize_opt_pack_brackets — do not leave spaces around brackets (e.g. [ 1, 2 ] becomes [1, 2])

• json_serialize_opt_no_space_after_comma — do not leave spaces after commas

• json_serialize_opt_no_space_after_colon — do not leave spaces after colons (inside objects)

• json_serialize_opt_use_tabs — indent using tabs instead of spaces when in multi-line mode

• indent_size — the number of tabs or spaces to indent with in multi-line mode