Moved examples.

Added intrusive and non-intrusive versions of packing and unpacking examples.

example/c/lib_buffer_unpack.c

@@ -0,0 +1,119 @@
+#include <msgpack.h>
+#include <stdio.h>
+#include <assert.h>
+
+
+typedef struct receiver {
+    msgpack_sbuffer sbuf;
+    size_t rest;
+} receiver;
+
+receiver r;
+
+void receiver_init(receiver *r) {
+    msgpack_packer pk;
+
+    msgpack_sbuffer_init(&r->sbuf);
+    msgpack_packer_init(&pk, &r->sbuf, msgpack_sbuffer_write);
+    /* 1st object */
+    msgpack_pack_array(&pk, 3);
+    msgpack_pack_int(&pk, 1);
+    msgpack_pack_true(&pk);
+    msgpack_pack_str(&pk, 7);
+    msgpack_pack_str_body(&pk, "example", 7);
+    /* 2nd object */
+    msgpack_pack_str(&pk, 6);
+    msgpack_pack_str_body(&pk, "second", 6);
+    /* 3rd object */
+    msgpack_pack_array(&pk, 2);
+    msgpack_pack_int(&pk, 42);
+    msgpack_pack_false(&pk);
+    r->rest = r->sbuf.size;
+}
+
+size_t receiver_recv(receiver *r, char* buf, size_t try_size) {
+    size_t off = r->sbuf.size - r->rest;
+
+    size_t actual_size = try_size;
+    if (actual_size > r->rest) actual_size = r->rest;
+
+    memcpy(buf, r->sbuf.data + off, actual_size);
+    r->rest -= actual_size;
+
+    return actual_size;
+}
+
+#define EACH_RECV_SIZE 4
+
+void unpack(receiver* r) {
+    /* buf is allocated by unpacker. */
+    msgpack_unpacker* unp = msgpack_unpacker_new(100);
+    msgpack_unpacked result;
+    msgpack_unpack_return ret;
+    char* buf;
+    size_t recv_len;
+
+    msgpack_unpacked_init(&result);
+    if (msgpack_unpacker_buffer_capacity(unp) < EACH_RECV_SIZE) {
+        bool expanded = msgpack_unpacker_reserve_buffer(unp, 100);
+        assert(expanded);
+    }
+    buf = msgpack_unpacker_buffer(unp);
+
+    recv_len = receiver_recv(r, buf, EACH_RECV_SIZE);
+    msgpack_unpacker_buffer_consumed(unp, recv_len);
+
+
+    int recv_count = 0;
+    while (recv_len > 0) {
+        int i = 0;
+        printf("receive count: %d %zd bytes received.:\n", recv_count++, recv_len);
+        ret = msgpack_unpacker_next(unp, &result);
+        while (ret == MSGPACK_UNPACK_SUCCESS) {
+            msgpack_object obj = result.data;
+
+            /* Use obj. */
+            printf("Object no %d:\n", i++);
+            msgpack_object_print(stdout, obj);
+            printf("\n");
+            /* If you want to allocate something on the zone, you can use zone. */
+            /* msgpack_zone* zone = result.zone; */
+            /* The lifetime of the obj and the zone,  */
+
+            ret = msgpack_unpacker_next(unp, &result);
+        }
+        if (ret == MSGPACK_UNPACK_PARSE_ERROR) {
+            printf("The data in the buf is invalid format.\n");
+            msgpack_unpacked_destroy(&result);
+            return;
+        }
+        if (msgpack_unpacker_buffer_capacity(unp) < EACH_RECV_SIZE) {
+            bool expanded = msgpack_unpacker_reserve_buffer(unp, 100);
+            assert(expanded);
+        }
+        buf = msgpack_unpacker_buffer(unp);
+        recv_len = receiver_recv(r, buf, 4);
+        msgpack_unpacker_buffer_consumed(unp, recv_len);
+    }
+    msgpack_unpacked_destroy(&result);
+}
+
+int main(void) {
+    receiver r;
+    receiver_init(&r);
+
+    unpack(&r);
+
+    return 0;
+}
+
+/* Output */
+
+/*
+Object no 1:
+[1, true, "example"]
+Object no 2:
+"second"
+Object no 3:
+[42, false]
+*/