C的魅力在于指针

原有的adrv9025 代理框架很好用,在其原有的平台上做改进

char ***rows = calloc(16, sizeof(char *));
  for (int32_t i = 0; i < 16; i++) {
    rows[i] = calloc(sizeof(char *), 10);
    for (int32_t j = 0; j < 11; j++) {
      rows[i][j] = calloc(1, 128);
      sprintf(rows[i][j], "Hello World");
    }
  }
  for (int32_t i = 0; i < 16; i++) {
    printf("row:%d ", i);
    for (int32_t j = 0; j < 11; j++) {
      printf("[col:%d %s] ", j, rows[i][j]);
    }
    printf("\n");
  }
  return 0;

将字符串 分成行列

指针存储地址，指针本身的大小，和几级指针没有关系,不同类型的指针，只是方便形成数组时,自动按照字长，分割出来

/*example override stmt cache functions*/
static inline int32_t __attribute__((__unused__))
stmt2cache(struct sqlite3_stmt *stmt, struct cacheList *node) {
  struct cache *pnode = container_of(&node, struct cache, list);
  if (pnode == 0 || node == 0) {
    return -1;
  }
  node->para.id.u32 =
      (uint32_t)strtol((const char *)sqlite3_column_text(stmt, 0), 0, 16);
  memcpy(node->para.name, (const char *)sqlite3_column_text(stmt, 1),
         strlen((const char *)sqlite3_column_text(stmt, 1)));
  memcpy(node->para.mode, (const char *)sqlite3_column_text(stmt, 2),
         strlen((const char *)sqlite3_column_text(stmt, 3)));
  memcpy(node->para.type, (const char *)sqlite3_column_text(stmt, 3),
         strlen((const char *)sqlite3_column_text(stmt, 3)));
  node->para.coef = (float)sqlite3_column_double(stmt, 4);
  node->para.len = (uint32_t)sqlite3_column_int(stmt, 5);
  memcpy(node->para.value, (const char *)sqlite3_column_text(stmt, 6),
         strlen((const char *)sqlite3_column_text(stmt, 6)));
  node->para.attr = (uint8_t)sqlite3_column_int(stmt, 9);
  return 0;
}

// Only For MCPA
static inline int32_t __attribute__((__unused__))
serdes2str(char *buf, struct cache2para *ca) {
  if (buf == 0 || ca == 0) {
    return -2;
  }
  bzero(buf, strlen(buf));
  sprintf(buf, "\"0x%04X\",\"%s\",\"%s\",\"%s\",%f,%d,\"%s\",%d,%d,%d",
          ca->id.u32, ca->name, ca->mode, ca->type, ca->coef, ca->len,
          ca->value, ca->minThrehold, ca->maxThrehold, ca->attr);
  return 0;
}

static inline int32_t __attribute__((__unused__))
stmt_common(struct sqlite3_stmt *stmt, void *args) {
  struct cacheList *newNode = ((struct cache *)args)->list;
  struct LIST_NODE *root = &((struct cache *)args)->root;
  struct cache *_cache = (struct cache *)args;
  newNode = (struct cacheList *)calloc(sizeof(struct cacheList), 1);
  if (newNode == 0) {
    return -2;
  }
  newNode->serdes2str = _cache->serdes2str4cacheList;
  _cache->deserdes2stmt4list(stmt, newNode);
  list_add_tail(&newNode->node, root);
  return 0;
}

int32_t Example(void) {
  static struct SQLITE3_BASE_INFO rmu_db = {.db_path =
                                                "/mnt/flash/config/drurmu.db"};

  static struct SQLITE3_DEV rmu_dev = {.info = &rmu_db};
  static struct cache CACHE[] = {{.cacheName = "MCPC 32bit IDX",
                                  .dev = &rmu_dev,
                                  .db_table = "rmu",
                                  .updateValueName = "V0",
                                  .indexType = "str2hex16bitBIG",
                                  .root = {&CACHE[0].root, &CACHE[0].root},
                                  .deserdes2stmt4list = stmt2cache,
                                  .serdes2str4cacheList = serdes2str}};

  for (int32_t i = 0; i < ARRAY_SIZE(CACHE); i++) {
    if (SQLITE3_OPEN(CACHE[i].dev) == -9) {
      printf("%s\n", CACHE[i].dev->errMsg);
      return 0;
    }
    if (SQLITE3_DESERDES_TABLE(CACHE[i].dev, CACHE[i].db_table, stmt_common,
                               &CACHE[i])) {
      printf("error:%s\n", sqlite3_errmsg(CACHE[i].dev->handle));
    }
  }
  const struct cacheList *cur = 0;
  for (int32_t i = 0; i < 0xFFFF; i++) {
    cur = cacheSectionSearch(&CACHE[0], i);
    if (cur == 0) {
      continue;
    }
    printf("index:%08x name:%s value:%s %s\n", i, cur->para.name,
           cur->para.value, CACHE[0].indexType);
    if (cacheSectionUpdate(&CACHE[0], i, "hello world") < 0) {
      printf("update error:%s \n", sqlite3_errmsg(CACHE[0].dev->handle));
    }
    cur = cacheSectionSearch(&CACHE[0], i);
    printf("index:%08x name:%s value:%s\n", i, cur->para.name, cur->para.value);
  }
  cacheSectionDelete(&CACHE[0], 0x2);
  struct cacheList *insertList = newcacheList(0x2, "HelloInsertMode", "RW", "1",
                                              "data", 1.0, 1, serdes2str);
  cacheSectionPush(&CACHE[0], insertList);
  return 0;
}