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/*
This example program demonstrates the JSON parsing and generating
capabilities of Xmlrpc-c.
The program reads JSON text from Standard Input and displays its value as
XML-RPC XML text. It then re-generates JSON from the intermediate
parsed information and displays that.
*/
#include <stdlib.h>
#include <stdio.h>
#include <xmlrpc-c/json.h>
#include <xmlrpc-c/util.h>
static void
dieIfFaultOccurred(xmlrpc_env * const envP) {
if (envP->fault_occurred) {
fprintf(stderr, "ERROR: %s (%d)\n",
envP->fault_string, envP->fault_code);
exit(1);
}
}
void
printAsXml(xmlrpc_value * const valP) {
xmlrpc_env env;
xmlrpc_mem_block * outP;
xmlrpc_env_init(&env);
outP = XMLRPC_MEMBLOCK_NEW(char, &env, 0);
dieIfFaultOccurred(&env);
xmlrpc_serialize_value(&env, outP, valP);
printf("XML-RPC XML:\n");
printf("%.*s\n",
XMLRPC_MEMBLOCK_SIZE(char, outP),
XMLRPC_MEMBLOCK_CONTENTS(char, outP));
XMLRPC_MEMBLOCK_FREE(char, outP);
xmlrpc_env_clean(&env);
}
void
printAsJson(xmlrpc_value * const valP) {
xmlrpc_env env;
xmlrpc_mem_block * outP;
xmlrpc_value * val2P;
xmlrpc_env_init(&env);
outP = XMLRPC_MEMBLOCK_NEW(char, &env, 0);
dieIfFaultOccurred(&env);
xmlrpc_serialize_json(&env, valP, outP);
dieIfFaultOccurred(&env);
printf("JSON:\n");
printf("%.*s\n",
XMLRPC_MEMBLOCK_SIZE(char, outP),
XMLRPC_MEMBLOCK_CONTENTS(char, outP));
XMLRPC_MEMBLOCK_FREE(char, outP);
xmlrpc_env_clean(&env);
}
int
main(int argc, const char *argv[]) {
xmlrpc_env env;
char buf[65536];
xmlrpc_value * valP;
size_t bytesReadCt;
xmlrpc_env_init(&env);
if (argc-1 > 0) {
fprintf(stderr, "This program has no arguments. "
"JSON input is from Standard Input\n");
exit(1);
}
bytesReadCt = fread(buf, 1, sizeof(buf)-1, stdin);
buf[bytesReadCt] = '\0';
valP = xmlrpc_parse_json(&env, buf);
dieIfFaultOccurred(&env);
printAsXml(valP);
printAsJson(valP);
xmlrpc_DECREF(valP);
xmlrpc_env_clean(&env);
return 0;
}
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