refact

source/libs/tdb/src/db/tdbDb.c

@@ -82,176 +82,4 @@ int tdbDbClose(STDb *pDb) {
 int tdbDbInsert(STDb *pDb, const void *pKey, int keyLen, const void *pVal, int valLen) {
   // TODO
   return 0;
-}
-
-#if 0
-struct STDb {
-  char         dbname[TDB_MAX_DBNAME_LEN];
-  SBTree *     pBt;      // current access method (may extend)
-  SPgFile *    pPgFile;  // backend page file this DB is using
-  TENV *       pEnv;     // TENV containing the DB
-  int          klen;     // key length if know
-  int          vlen;     // value length if know
-  bool         dup;      // dup mode
-  TdbKeyCmprFn cFn;      // compare function
-};
-
-struct STDbCurosr {
-  SBtCursor *pBtCur;
-};
-
-static int tdbDefaultKeyCmprFn(int keyLen1, const void *pKey1, int keyLen2, const void *pKey2);
-
-int tdbCreate(TDB **ppDb) {
-  TDB *pDb;
-
-  // create the handle
-  pDb = (TDB *)calloc(1, sizeof(*pDb));
-  if (pDb == NULL) {
-    return -1;
-  }
-
-  pDb->klen = TDB_VARIANT_LEN;
-  pDb->vlen = TDB_VARIANT_LEN;
-  pDb->dup = false;
-  pDb->cFn = tdbDefaultKeyCmprFn;
-
-  *ppDb = pDb;
-  return 0;
-}
-
-static int tdbDestroy(TDB *pDb) {
-  if (pDb) {
-    free(pDb);
-  }
-  return 0;
-}
-
-int tdbOpen(TDB *pDb, const char *fname, const char *dbname, TENV *pEnv) {
-  int       ret;
-  uint8_t   fileid[TDB_FILE_ID_LEN];
-  SPgFile * pPgFile;
-  SPgCache *pPgCache;
-  SBTree *  pBt;
-  bool      fileExist;
-  size_t    dbNameLen;
-  SPgno    dbRootPgno;
-  char      dbfname[128];  // TODO: make this as a macro or malloc on the heap
-
-  ASSERT(pDb != NULL);
-  ASSERT(fname != NULL);
-  // TODO: Here we simply put an assert here. In the future, make `pEnv`
-  // can be set as NULL.
-  ASSERT(pEnv != NULL);
-
-  // check the DB name
-  dbNameLen = 0;
-  if (dbname) {
-    dbNameLen = strlen(dbname);
-    if (dbNameLen >= TDB_MAX_DBNAME_LEN) {
-      return -1;
-    }
-
-    memcpy(pDb->dbname, dbname, dbNameLen);
-  }
-
-  pDb->dbname[dbNameLen] = '\0';
-
-  // get page file from the env, if not opened yet, open it
-  pPgFile = NULL;
-  snprintf(dbfname, 128, "%s/%s", tdbEnvGetRootDir(pEnv), fname);
-  fileExist = (tdbCheckFileAccess(fname, TDB_F_OK) == 0);
-  if (fileExist) {
-    tdbGnrtFileID(dbfname, fileid, false);
-    pPgFile = tdbEnvGetPageFile(pEnv, fileid);
-  }
-
-  if (pPgFile == NULL) {
-    ret = pgFileOpen(&pPgFile, dbfname, pEnv);
-    if (ret != 0) {
-      // TODO: handle error
-      return -1;
-    }
-  }
-
-  // TODO: get the root page number from the master DB of the page file
-  // tdbGet(&dbRootPgno);
-  if (dbRootPgno == 0) {
-    // DB not exist, create one
-    ret = pgFileAllocatePage(pPgFile, &dbRootPgno);
-    if (ret != 0) {
-      // TODO: handle error
-    
-    // tdbInsert(pPgFile->pMasterDB, dbname, strlen(dbname), &dbRootPgno, sizeof(dbRootPgno));
-  }
-
-  ASSERT(dbRootPgno > 1);
-
-  // pDb->pBt->root = dbRootPgno;
-
-  // register
-  pDb->pPgFile = pPgFile;
-  tdbEnvRgstDB(pEnv, pDb);
-  pDb->pEnv = pEnv;
-
-  return 0;
-}
-
-int tdbClose(TDB *pDb) {
-  if (pDb == NULL) return 0;
-  return tdbDestroy(pDb);
-}
-
-int tdbDrop(TDB *pDb) {
-  // TODO
-  return 0;
-}
-
-int tdbSetKeyLen(TDB *pDb, int klen) {
-  // TODO: check `klen`
-  pDb->klen = klen;
-  return 0;
-}
-
-int tdbSetValLen(TDB *pDb, int vlen) {
-  // TODO: check `vlen`
-  pDb->vlen = vlen;
-  return 0;
-}
-
-int tdbSetDup(TDB *pDb, int dup) {
-  if (dup) {
-    pDb->dup = true;
-  } else {
-    pDb->dup = false;
-  }
-  return 0;
-}
-
-int tdbSetCmprFunc(TDB *pDb, TdbKeyCmprFn fn) {
-  if (fn == NULL) {
-    return -1;
-  } else {
-    pDb->cFn = fn;
-  }
-  return 0;
-}
-
-int tdbGetKeyLen(TDB *pDb) { return pDb->klen; }
-
-int tdbGetValLen(TDB *pDb) { return pDb->vlen; }
-
-int tdbGetDup(TDB *pDb) {
-  if (pDb->dup) {
-    return 1;
-  } else {
-    return 0;
-  }
-}
-
-int tdbInsert(TDB *pDb, const void *pKey, int nKey, const void *pData, int nData) {
-  // TODO
-  return 0;
-}
-
-#endif
+}