**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.150 2004/02/12 19:01:05 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** A pointer to this structure is used to communicate information
................................................................................
int sqlite_exec(
  sqlite *db,                 /* The database on which the SQL executes */
  const char *zSql,           /* The SQL to be executed */
  sqlite_callback xCallback,  /* Invoke this callback routine */
  void *pArg,                 /* First argument to xCallback() */
  char **pzErrMsg             /* Write error messages here */
){

  return sqliteMain(db, zSql, xCallback, pArg, 0, 0, pzErrMsg);




}
















































/*
** Compile a single statement of SQL into a virtual machine.  Return one
** of the SQLITE_ success/failure codes.  Also write an error message into
** memory obtained from malloc() and make *pzErrMsg point to that message.
*/
int sqlite_compile(

**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.151 2004/02/13 16:30:10 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** A pointer to this structure is used to communicate information
................................................................................
int sqlite_exec(
  sqlite *db,                 /* The database on which the SQL executes */
  const char *zSql,           /* The SQL to be executed */
  sqlite_callback xCallback,  /* Invoke this callback routine */
  void *pArg,                 /* First argument to xCallback() */
  char **pzErrMsg             /* Write error messages here */
){
#if 1
  return sqliteMain(db, zSql, xCallback, pArg, 0, 0, pzErrMsg);
#else
  int rc;
  const char *zLeftover;
  sqlite_vm *pVm;

  if( zSql==0 ) return SQLITE_OK;
  while( zSql[0] ){
    int nBusy = 0;
    rc = sqlite_compile(db, zSql, &zLeftover, &pVm, pzErrMsg);
    if( rc!=SQLITE_OK ){
      /* sqlite_finalize(pVm, 0); */
      return rc;
    }
    while(1){
      int nArg;
      char **azArg, **azCol;
      rc = sqlite_step(pVm, &nArg, &azArg, &azCol);
      if( rc==SQLITE_ROW ){
        if( xCallback(pArg, nArg, azArg, azCol) ){
          sqlite_finalize(pVm, 0);
          return SQLITE_ABORT;
        }
#if 0
      }else if( rc==SQLITE_BUSY ){
        if( db->xBusyCallback==0
              || db->xBusyCallback(db->pBusyArg, "", nBusy++)==0 ){
          sqlite_finalize(pVm, 0);
          return SQLITE_BUSY;
        }
#endif
      }else if( rc==SQLITE_SCHEMA ){
        sqlite_finalize(pVm, 0);
        break;
      }else{
        rc = sqlite_finalize(pVm, pzErrMsg);
        if( rc==SQLITE_SCHEMA ){
          sqliteResetInternalSchema(db, 0);
          /* break; */
        }
        if( rc!=SQLITE_OK ){
          return rc;
        }
        zSql = zLeftover;
        while( isspace(zSql[0]) ) zSql++;
        break;
      }
    }
  }
  return SQLITE_OK;
#endif
}


/*
** Compile a single statement of SQL into a virtual machine.  Return one
** of the SQLITE_ success/failure codes.  Also write an error message into
** memory obtained from malloc() and make *pzErrMsg point to that message.
*/
int sqlite_compile(