json_t *json_vpack_ex(json_error_t *error, size_t flags,
const char *fmt, va_list ap)
{
scanner_t s;
va_list ap_copy;
json_t *value;
if(!fmt || !*fmt) {
jsonp_error_init(error, "<format>");
jsonp_error_set(error, -1, -1, 0, "NULL or empty format string");
return NULL;
}
jsonp_error_init(error, NULL);
scanner_init(&s, error, flags, fmt);
next_token(&s);
va_copy(ap_copy, ap);
value = pack(&s, &ap_copy);
va_end(ap_copy);
if(!value)
return NULL;
next_token(&s);
if(s.token) {
json_decref(value);
set_error(&s, "<format>", "Garbage after format string");
return NULL;
}
return value;
}
json_t *json_load_file(const char *path, size_t flags, json_error_t *error)
{
json_t *result;
FILE *fp;
jsonp_error_init(error, path);
if (path == NULL) {
error_set(error, NULL, "wrong arguments");
return NULL;
}
fp = fopen(path, "rb");
if(!fp)
{
error_set(error, NULL, "unable to open %s: %s",
path, strerror(errno));
return NULL;
}
result = json_loadf(fp, flags, error);
fclose(fp);
return result;
}
json_t *json_loadf(FILE *input, size_t flags, json_error_t *error)
{
lex_t lex;
const char *source;
json_t *result;
if(input == stdin)
source = "<stdin>";
else
source = "<stream>";
jsonp_error_init(error, source);
if (input == NULL) {
error_set(error, NULL, "wrong arguments");
return NULL;
}
if(lex_init(&lex, (get_func)fgetc, input))
return NULL;
result = parse_json(&lex, flags, error);
lex_close(&lex);
return result;
}
json_t *json_loadb(const char *buffer, size_t buflen, size_t flags, json_error_t *error)
{
lex_t lex;
json_t *result;
buffer_data_t stream_data;
jsonp_error_init(error, "<buffer>");
if (buffer == NULL) {
error_set(error, NULL, "wrong arguments");
return NULL;
}
stream_data.data = buffer;
stream_data.pos = 0;
stream_data.len = buflen;
if(lex_init(&lex, buffer_get, (void *)&stream_data))
return NULL;
result = parse_json(&lex, flags, error);
lex_close(&lex);
return result;
}
json_t *json_load_callback(json_load_callback_t callback, void *arg, size_t flags, json_error_t *error)
{
lex_t lex;
json_t *result;
callback_data_t stream_data;
memset(&stream_data, 0, sizeof(stream_data));
stream_data.callback = callback;
stream_data.arg = arg;
jsonp_error_init(error, "<callback>");
if (callback == NULL) {
error_set(error, NULL, "wrong arguments");
return NULL;
}
if(lex_init(&lex, (get_func)callback_get, &stream_data))
return NULL;
result = parse_json(&lex, flags, error);
lex_close(&lex);
return result;
}
json_t *json_loadf(FILE *input, size_t flags, json_error_t *error)
{
lex_t lex;
const char *source;
json_t *result;
(void)flags; /* unused */
if(lex_init(&lex, (get_func)fgetc, input))
return NULL;
if(input == stdin)
source = "<stdin>";
else
source = "<stream>";
jsonp_error_init(error, source);
result = parse_json(&lex, error);
if(!result)
goto out;
lex_scan(&lex, error);
if(lex.token != TOKEN_EOF) {
error_set(error, &lex, "end of file expected");
json_decref(result);
result = NULL;
}
out:
lex_close(&lex);
return result;
}
json_t *json_loads(const char *string, size_t flags, json_error_t *error)
{
lex_t lex;
json_t *result;
string_data_t stream_data = {string, 0};
(void)flags; /* unused */
if(lex_init(&lex, string_get, (void *)&stream_data))
return NULL;
jsonp_error_init(error, "<string>");
result = parse_json(&lex, error);
if(!result)
goto out;
lex_scan(&lex, error);
if(lex.token != TOKEN_EOF) {
error_set(error, &lex, "end of file expected");
json_decref(result);
result = NULL;
}
out:
lex_close(&lex);
return result;
}
int json_vunpack_ex(json_t *root, json_error_t *error, size_t flags,
const char *fmt, va_list ap)
{
scanner_t s;
va_list ap_copy;
if(!root) {
jsonp_error_init(error, "<root>");
jsonp_error_set(error, -1, -1, 0, "NULL root value");
return -1;
}
if(!fmt || !*fmt) {
jsonp_error_init(error, "<format>");
jsonp_error_set(error, -1, -1, 0, "NULL or empty format string");
return -1;
}
jsonp_error_init(error, NULL);
scanner_init(&s, error, flags, fmt);
next_token(&s);
va_copy(ap_copy, ap);
if(unpack(&s, root, &ap_copy)) {
va_end(ap_copy);
return -1;
}
va_end(ap_copy);
next_token(&s);
if(s.token) {
set_error(&s, "<format>", "Garbage after format string");
return -1;
}
return 0;
}
json_t *json_bencode_loadb(const char *buffer, size_t buflen, size_t flags,
json_error_t *error)
{
stream_t stream;
jsonp_error_init(error, "<buffer>");
if (buffer == NULL) {
error_set(error, NULL, "wrong arguments");
return NULL;
}
init_stream(&stream, buffer, buflen, NULL, NULL);
return parse_bencode(&stream, flags, error);
}
json_t *json_bencode_loads(const char *string, size_t flags,
json_error_t *error)
{
stream_t stream;
jsonp_error_init(error, "<string>");
if (string == NULL) {
error_set(error, NULL, "wrong arguments");
return NULL;
}
init_stream(&stream, string, strlen(string), NULL, NULL);
return parse_bencode(&stream, flags, error);
}
json_t *json_bencode_loadf(FILE *input, size_t flags, json_error_t *error)
{
stream_t stream;
const char *source;
json_t *result;
if(input == stdin)
source = "<stdin>";
else
source = "<stream>";
jsonp_error_init(error, source);
if (input == NULL) {
error_set(error, NULL, "wrong arguments");
return NULL;
}
init_stream(&stream, NULL, 0, file_fill, input);
result = parse_bencode(&stream, flags, error);
finish_stream(&stream);
return result;
}
json_ref json_loads(const char *string, size_t flags, json_error_t *error)
{
lex_t lex;
string_data_t stream_data;
jsonp_error_init(error, "<string>");
if (string == nullptr) {
error_set(error, nullptr, "wrong arguments");
return nullptr;
}
stream_data.data = string;
stream_data.pos = 0;
if(lex_init(&lex, string_get, (void *)&stream_data))
return nullptr;
auto result = parse_json(&lex, flags, error);
lex_close(&lex);
return result;
}
json_ref json_load_file(const char *path, size_t flags, json_error_t *error)
{
FILE *fp;
jsonp_error_init(error, path);
if (path == nullptr) {
error_set(error, nullptr, "wrong arguments");
return nullptr;
}
fp = fopen(path, "rb");
if(!fp)
{
error_set(error, nullptr, "unable to open %s: %s",
path, strerror(errno));
return nullptr;
}
auto result = json_loadf(fp, flags, error);
fclose(fp);
return result;
}