*** /dev/null Tue May 21 17:22:11 2024
--- - Tue May 21 17:26:44 2024
***************
*** 0 ****
--- 1,124 ----
+ #include <stdio.h>
+ #include <string.h>
+ #include <xds.h>
+
+ struct mystruct
+ {
+ xds_int32_t small;
+ xds_int64_t big;
+ xds_uint32_t positive;
+ char text[16];
+ };
+
+ static int encode_mystruct(xds_t* xds, void* engine_context,
+ void* buffer, size_t buffer_size, size_t* used_buffer_size,
+ va_list* args)
+ {
+ struct mystruct* ms;
+ ms = va_arg(*args, struct mystruct*);
+ return xds_encode(xds, "int32 int64 uint32 octetstream",
+ ms->small, ms->big, ms->positive,
+ ms->text, sizeof(ms->text));
+ }
+
+ static int decode_mystruct(xds_t* xds, void* engine_context,
+ void* buffer, size_t buffer_size, size_t* used_buffer_size,
+ va_list* args)
+ {
+ struct mystruct* ms;
+ size_t i;
+ char* tmp;
+ int rc;
+ ms = va_arg(*args, struct mystruct*);
+ rc = xds_decode(xds, "int32 int64 uint32 octetstream",
+ &(ms->small), &(ms->big), &(ms->positive),
+ &tmp, &i);
+ if (rc == XDS_OK)
+ {
+ assert(i == sizeof(ms->text));
+ memmove(ms->text, tmp, i);
+ free(tmp);
+ }
+ return rc;
+ }
+
+ static void error_exit(int rc, const char* msg, ...)
+ {
+ va_list args;
+ va_start(args, msg);
+ vfprintf(stderr, msg, args);
+ va_end(args);
+ exit(rc);
+ }
+
+ int main()
+ {
+ xds_t* xds;
+ char* buffer;
+ size_t buffer_size;
+
+ struct mystruct ms, new_ms;
+ ms.small = -0x1234567;
+ ms.big = -0x1234567890abcdeLL;
+ ms.positive = 42;
+ strcpy(ms.text, "Hallo World");
+
+ /* Encode our copy of mystruct using our encoding callback. */
+
+ xds = xds_init(XDS_ENCODE);
+ if (xds == NULL)
+ error_exit(1, "Failed to initialize XDS context.\n");
+
+ if (xds_register(xds, "mystruct", &encode_mystruct, NULL) != XDS_OK ||
+ xds_register(xds, "int32", &xdr_encode_int32, NULL) != XDS_OK ||
+ xds_register(xds, "int64", &xdr_encode_int64, NULL) != XDS_OK ||
+ xds_register(xds, "octetstream", &xdr_encode_octetstream, NULL) != XDS_OK ||
+ xds_register(xds, "uint32", &xdr_encode_uint32, NULL) != XDS_OK)
+ {
+ error_exit(1, "Failed to register my encoding engines.\n");
+ }
+
+ if (xds_encode(xds, "mystruct", &ms) != XDS_OK)
+ error_exit(1, "xds_encode() failed!\n");
+
+ if (xds_getbuffer(xds, XDS_GIFT, (void**)&buffer, &buffer_size) != XDS_OK)
+ error_exit(1, "xds_getbuffer() failed!\n");
+
+ xds_destroy(xds);
+
+ /* Now create a decoding context and decode the whole thing again. */
+
+ xds = xds_init(XDS_DECODE);
+ if (xds == NULL)
+ error_exit(1, "Failed to initialize XDS context.\n");
+
+ if (xds_register(xds, "mystruct", &decode_mystruct, NULL) != XDS_OK ||
+ xds_register(xds, "int32", &xdr_decode_int32, NULL) != XDS_OK ||
+ xds_register(xds, "int64", &xdr_decode_int64, NULL) != XDS_OK ||
+ xds_register(xds, "uint32", &xdr_decode_uint32, NULL) != XDS_OK ||
+ xds_register(xds, "octetstream", &xdr_decode_octetstream, NULL) != XDS_OK)
+ {
+ error_exit(1, "Failed to register my decoding engines.\n");
+ }
+
+ if (xds_setbuffer(xds, XDS_GIFT, buffer, buffer_size) != XDS_OK)
+ error_exit(1, "xds_setbuffer() failed!\n");
+
+ if (xds_decode(xds, "mystruct", &new_ms) != XDS_OK)
+ error_exit(1, "xds_decode() failed!\n");
+
+ xds_destroy(xds);
+
+ /* Both structures must be identical. */
+
+ if (ms.small != new_ms.small || ms.big != new_ms.big ||
+ ms.positive != new_ms.positive ||
+ memcmp(&ms.text, &new_ms.text, sizeof(ms.text)) != 0)
+ {
+ error_exit(1, "Decoded data does not match the original!\n");
+ }
+
+ /* Everything went fine. */
+
+ return 0;
+ }
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