refact

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

@@ -49,11 +49,16 @@ int tdbDbOpen(const char *fname, int keyLen, int valLen, FKeyComparator keyCmprF
 
   ASSERT(pPager != NULL);
 
+  // Try to open the database
   ret = tdbPagerOpenDB(pPager, &pgno, true);
   if (ret < 0) {
     return -1;
   }
 
+  if (pgno == 0) {
+    // TODO: Try to create a new database
+  }
+
   // pDb->pBt
   ret = tdbBtreeOpen(pgno, keyLen, valLen, pPager, keyCmprFn, &(pDb->pBt));
   if (ret < 0) {

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

@@ -243,3 +243,18 @@ static int tdbPagerReadPage(SPager *pPager, SPage *pPage) {
 }
 
 int tdbPagerGetPageSize(SPager *pPager) { return pPager->pageSize; }
+
+static void tdbPagerZeroPage(SPage *pPage, int flags) {
+  SPager *pPager;
+
+  pPager = pPage->pPager;
+  memset(pPage->pData, 0, pPager->pageSize);
+  pPage->pPageHdr = (SPageHdr *)(pPage->pData);
+  pPage->aCellIdx = (u16 *)(&(pPage->pPageHdr[1]));
+  /* TODO */
+}
+
+static int tdbPagerInitPage(SPage *pPage) {
+  // TODO
+  return 0;
+}
\ No newline at end of file

source/libs/tdb/src/inc/tdbPager.h

@@ -20,14 +20,14 @@
 extern "C" {
 #endif
 
-int    tdbPagerOpen(SPCache *pCache, const char *fileName, SPager **ppFile);
-int    tdbPagerClose(SPager *pFile);
-int    tdbPagerOpenDB(SPager *pFile, SPgno *ppgno, bool toCreate);
+int    tdbPagerOpen(SPCache *pCache, const char *fileName, SPager **ppPager);
+int    tdbPagerClose(SPager *pPager);
+int    tdbPagerOpenDB(SPager *pPager, SPgno *ppgno, bool toCreate);
 SPage *tdbPagerGet(SPager *pPager, SPgno pgno, bool toLoad);
-int    tdbPagerWrite(SPager *pFile, SPage *pPage);
-int    tdbPagerAllocPage(SPager *pFile, SPage **ppPage, SPgno *ppgno);
-int    tdbPagerBegin(SPager *pFile);
-int    tdbPagerCommit(SPager *pFile);
+int    tdbPagerWrite(SPager *pPager, SPage *pPage);
+int    tdbPagerAllocPage(SPager *pPager, SPage **ppPage, SPgno *ppgno);
+int    tdbPagerBegin(SPager *pPager);
+int    tdbPagerCommit(SPager *pPager);
 int    tdbPagerGetPageSize(SPager *pPager);
 
 #ifdef __cplusplus