实现

test.c

@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <string.h>
+#include "simple_protobuf.h"
+
+struct TEST {
+    uint8_t a;
+    uint16_t b;
+    uint32_t c;
+    uint64_t d;
+    char e[256];
+};
+
+struct TEST t;
+uint64_t items_len[5] = {sizeof(t.a), sizeof(t.b), sizeof(t.c), sizeof(t.d), sizeof(t.e)};
+uint8_t types_len[5];
+
+int main() {
+    t.a = 0xAB;
+    t.b = 63345;
+    t.c = 1234567890;
+    t.d = 1234567898765435432ULL;
+    strcpy(t.e, "Hello world! This is a message from simple protobuf.");
+    for(int i = 0; i < 5; i++) {
+        types_len[i] = first_set(items_len[i]);
+        printf("Item %d has type %d with size %llu\n", i, types_len[i], items_len[i]);
+    }
+    align_struct(types_len, 5, sizeof(struct TEST));
+    for(int i = 0; i < 5; i++) {
+        printf("Item %d's type after align: %u\n", i, types_len[i]);
+    }
+    FILE* fp = fopen("test.sp", "wb");
+    if(fp) {
+        set_pb(fp, types_len, sizeof(struct TEST), &t);
+        memset(&t, 0, sizeof(struct TEST));
+        fclose(fp);
+        puts("Write file succeed.");
+        fp = NULL;
+        fp = fopen("test.sp", "rb");
+        if(fp) {
+            SIMPLE_PB* spb = get_pb(fp);
+            memcpy(&t, spb->target, sizeof(struct TEST));
+            printf("a:%u\nb:%u\nc:%u\nd:%llu\ne:%s\n", t.a, t.b, t.c, t.d, t.e);
+        } else perror("[SPB]");
+    } else perror("[SPB]");
+}