Function recoverStep

modules/dasSQLITE/sqlite/shell.c:16037–16141

** This function does the work of a single sqlite3_recover_step() call. It ** is guaranteed that the handle is not in an error state when this ** function is called. */

** function is called.
*/
static void recoverStep(sqlite3_recover *p){
  assert( p && p->errCode==SQLITE_OK );
  switch( p->eState ){
    case RECOVER_STATE_INIT:
      /* This is the very first call to sqlite3_recover_step() on this object.
      */
      recoverSqlCallback(p, "BEGIN");
      recoverSqlCallback(p, "PRAGMA writable_schema = on");

      recoverEnterMutex();
      recoverInstallWrapper(p);

      /* Open the output database. And register required virtual tables and 
      ** user functions with the new handle. */
      recoverOpenOutput(p);

      /* Open transactions on both the input and output databases. */
      sqlite3_file_control(p->dbIn, p->zDb, SQLITE_FCNTL_RESET_CACHE, 0);
      recoverExec(p, p->dbIn, "PRAGMA writable_schema = on");
      recoverExec(p, p->dbIn, "BEGIN");
      if( p->errCode==SQLITE_OK ) p->bCloseTransaction = 1;
      recoverExec(p, p->dbIn, "SELECT 1 FROM sqlite_schema");
      recoverTransferSettings(p);
      recoverOpenRecovery(p);
      recoverCacheSchema(p);

      recoverUninstallWrapper(p);
      recoverLeaveMutex();

      recoverExec(p, p->dbOut, "BEGIN");

      recoverWriteSchema1(p);
      p->eState = RECOVER_STATE_WRITING;
      break;
      
    case RECOVER_STATE_WRITING: {
      if( p->w1.pTbls==0 ){
        recoverWriteDataInit(p);
      }
      if( SQLITE_DONE==recoverWriteDataStep(p) ){
        recoverWriteDataCleanup(p);
        if( p->zLostAndFound ){
          p->eState = RECOVER_STATE_LOSTANDFOUND1;
        }else{
          p->eState = RECOVER_STATE_SCHEMA2;
        }
      }
      break;
    }

    case RECOVER_STATE_LOSTANDFOUND1: {
      if( p->laf.pUsed==0 ){
        recoverLostAndFound1Init(p);
      }
      if( SQLITE_DONE==recoverLostAndFound1Step(p) ){
        p->eState = RECOVER_STATE_LOSTANDFOUND2;
      }
      break;