int parse(const std::string& str, uint32_t& line, uint32_t& column) {
if (err_code_ != 0) {
return err_code_;
}
uint32_t processed = 0;
err_code_ = json_parser_string(&parser_,
str.c_str(),
static_cast<uint32_t>(str.size()),
&processed);
if (err_code_ || !json_parser_is_done(&parser_)) {
line = 1;
column = 1;
for (uint32_t i = 0; i < processed; ++i) {
if (str[i] == '\n') {
++line;
column = 1;
} else {
++column;
}
}
err_code_ = err_code_ ? err_code_ : JSON_ERROR_UTF8 + 1;
}
return err_code_;
}
static int do_parse(json_config *config, const char *filename)
{
FILE *input;
json_parser parser;
int ret;
int col, lines;
input = open_filename(filename, "r", 1);
if (!input)
return 2;
/* initialize the parser structure. we don't need a callback in verify */
ret = json_parser_init(&parser, config, NULL, NULL);
if (ret) {
fprintf(stderr, "error: initializing parser failed (code=%d): %s\n", ret, string_of_errors[ret]);
return ret;
}
ret = process_file(&parser, input, &lines, &col);
if (ret) {
fprintf(stderr, "line %d, col %d: [code=%d] %s\n",
lines, col, ret, string_of_errors[ret]);
return 1;
}
ret = json_parser_is_done(&parser);
if (!ret) {
fprintf(stderr, "syntax error\n");
return 1;
}
close_filename(filename, input);
return 0;
}
int parse(std::istream& stream, uint32_t &line, uint32_t &column) {
if (err_code_ != 0) {
return err_code_;
}
char buffer[4096];
line = 1;
column = 1;
for ( ; ; ) {
stream.read(buffer, sizeof(buffer));
std::streamsize read = stream.gcount();
if (read <= 0) {
break;
}
uint32_t processed = 0;
err_code_ = json_parser_string(&parser_,
buffer,
static_cast<uint32_t>(read),
&processed);
// check for early return
if (!err_code_ && json_parser_is_done(&parser_)) {
return err_code_;
}
for (uint32_t i = 0; i < processed; ++i) {
if (buffer[i] == '\n') {
++line;
column = 1;
} else {
++column;
}
}
if (err_code_) {
break;
}
}
if (err_code_ || !json_parser_is_done(&parser_)) {
err_code_ = err_code_ ? err_code_ : JSON_ERROR_UTF8 + 1;
}
return err_code_;
}
int
jsonrpc_recv(struct jsonrpc *rpc, struct jsonrpc_msg **msgp)
{
*msgp = NULL;
if (rpc->status) {
return rpc->status;
}
while (!rpc->received) {
if (byteq_is_empty(&rpc->input)) {
size_t chunk;
int retval;
chunk = byteq_headroom(&rpc->input);
retval = stream_recv(rpc->stream, byteq_head(&rpc->input), chunk);
if (retval < 0) {
if (retval == -EAGAIN) {
return EAGAIN;
} else {
VLOG_WARN_RL(&rl, "%s: receive error: %s",
rpc->name, strerror(-retval));
jsonrpc_error(rpc, -retval);
return rpc->status;
}
} else if (retval == 0) {
jsonrpc_error(rpc, EOF);
return EOF;
}
byteq_advance_head(&rpc->input, retval);
} else {
size_t n, used;
if (!rpc->parser) {
rpc->parser = json_parser_create(0);
}
n = byteq_tailroom(&rpc->input);
used = json_parser_feed(rpc->parser,
(char *) byteq_tail(&rpc->input), n);
byteq_advance_tail(&rpc->input, used);
if (json_parser_is_done(rpc->parser)) {
jsonrpc_received(rpc);
if (rpc->status) {
const struct byteq *q = &rpc->input;
if (q->head <= BYTEQ_SIZE) {
stream_report_content(q->buffer, q->head,
STREAM_JSONRPC,
THIS_MODULE, rpc->name);
}
return rpc->status;
}
}
}
}
*msgp = rpc->received;
rpc->received = NULL;
return 0;
}
static int do_format(json_config *config, const char *filename, const char *outputfile)
{
FILE *input, *output;
json_parser parser;
json_printer printer;
int ret;
int col, lines;
input = open_filename(filename, "r", 1);
if (!input)
return 2;
output = open_filename(outputfile, "a+", 0);
if (!output)
return 2;
/* initialize printer and parser structures */
ret = json_print_init(&printer, printchannel, stdout);
if (ret) {
fprintf(stderr, "error: initializing printer failed: [code=%d] %s\n", ret, string_of_errors[ret]);
return ret;
}
if (indent_string)
printer.indentstr = indent_string;
ret = json_parser_init(&parser, config, &prettyprint, &printer);
if (ret) {
fprintf(stderr, "error: initializing parser failed: [code=%d] %s\n", ret, string_of_errors[ret]);
return ret;
}
ret = process_file(&parser, input, &lines, &col);
if (ret) {
fprintf(stderr, "line %d, col %d: [code=%d] %s\n",
lines, col, ret, string_of_errors[ret]);
return 1;
}
ret = json_parser_is_done(&parser);
if (!ret) {
fprintf(stderr, "syntax error\n");
return 1;
}
/* cleanup */
json_parser_free(&parser);
json_print_free(&printer);
fwrite("\n", 1, 1, stdout);
close_filename(filename, input);
return 0;
}
static int do_tree(json_config *config, const char *filename, json_val_t **root_structure)
{
FILE *input;
json_parser parser;
json_parser_dom dom;
int ret;
int col, lines;
input = open_filename(filename, "r", 1);
if (!input)
return 2;
ret = json_parser_dom_init(&dom, tree_create_structure, tree_create_data, tree_append);
if (ret) {
fprintf(stderr, "error: initializing helper failed: [code=%d] %s\n", ret, string_of_errors[ret]);
return ret;
}
ret = json_parser_init(&parser, config, json_parser_dom_callback, &dom);
if (ret) {
fprintf(stderr, "error: initializing parser failed: [code=%d] %s\n", ret, string_of_errors[ret]);
return ret;
}
ret = process_file(&parser, input, &lines, &col);
if (ret) {
fprintf(stderr, "line %d, col %d: [code=%d] %s\n",
lines, col, ret, string_of_errors[ret]);
return 1;
}
ret = json_parser_is_done(&parser);
if (!ret) {
fprintf(stderr, "syntax error\n");
return 1;
}
if (root_structure)
*root_structure = dom.root_structure;
/* cleanup */
json_parser_free(&parser);
close_filename(filename, input);
return 0;
}
jobj * jobj_parse(const char * json_str)
{
int res;
jobj * o = NULL;
json_parser_dom dom;
json_parser p;
json_config config;
memset(&config, 0, sizeof(json_config));
res = json_parser_dom_init(&dom, dom_mknode, dom_mkval, dom_append);
if(res) return NULL;
res = json_parser_init(&p, &config, json_parser_dom_callback, &dom);
if(res) return NULL;
res = json_parser_string(&p, json_str, strlen(json_str), NULL);
if(!res && json_parser_is_done(&p)) o = dom.root_structure;
json_parser_free(&p);
json_parser_dom_free(&dom);
return o;
}
/* Attempts to receive a message from 'rpc'.
*
* If successful, stores the received message in '*msgp' and returns 0. The
* caller takes ownership of '*msgp' and must eventually destroy it with
* jsonrpc_msg_destroy().
*
* Otherwise, stores NULL in '*msgp' and returns one of the following:
*
* - EAGAIN: No message has been received.
*
* - EOF: The remote end closed the connection gracefully.
*
* - Otherwise an errno value that represents a JSON-RPC protocol violation
* or another error fatal to the connection. 'rpc' will not send or
* receive any more messages.
*/
int
jsonrpc_recv(struct jsonrpc *rpc, struct jsonrpc_msg **msgp)
{
int i;
*msgp = NULL;
if (rpc->status) {
return rpc->status;
}
for (i = 0; i < 50; i++) {
size_t n, used;
/* Fill our input buffer if it's empty. */
if (byteq_is_empty(&rpc->input)) {
size_t chunk;
int retval;
chunk = byteq_headroom(&rpc->input);
retval = stream_recv(rpc->stream, byteq_head(&rpc->input), chunk);
if (retval < 0) {
if (retval == -EAGAIN) {
return EAGAIN;
} else {
VLOG_WARN_RL(&rl, "%s: receive error: %s",
rpc->name, ovs_strerror(-retval));
jsonrpc_error(rpc, -retval);
return rpc->status;
}
} else if (retval == 0) {
jsonrpc_error(rpc, EOF);
return EOF;
}
byteq_advance_head(&rpc->input, retval);
}
/* We have some input. Feed it into the JSON parser. */
if (!rpc->parser) {
rpc->parser = json_parser_create(0);
}
n = byteq_tailroom(&rpc->input);
used = json_parser_feed(rpc->parser,
(char *) byteq_tail(&rpc->input), n);
byteq_advance_tail(&rpc->input, used);
/* If we have complete JSON, attempt to parse it as JSON-RPC. */
if (json_parser_is_done(rpc->parser)) {
*msgp = jsonrpc_parse_received_message(rpc);
if (*msgp) {
return 0;
}
if (rpc->status) {
const struct byteq *q = &rpc->input;
if (q->head <= q->size) {
stream_report_content(q->buffer, q->head, STREAM_JSONRPC,
THIS_MODULE, rpc->name);
}
return rpc->status;
}
}
}
return EAGAIN;
}
