SQLite

  Tcl_SetObjResult(interp, pRet);

  return TCL_OK;
}
#endif

#ifndef SQLITE_OMIT_INCRBLOB

static int blobHandleFromObj(
  Tcl_Interp *interp, 
  Tcl_Obj *pObj,
  sqlite3_blob **ppBlob
){
  char *z;
  int n;

  z = Tcl_GetStringFromObj(pObj, &n);
  if( n==0 ){
    *ppBlob = 0;
  }else{
    int notUsed;
    Tcl_Channel channel;
    ClientData instanceData;
    
    channel = Tcl_GetChannel(interp, z, &notUsed);
    if( !channel ) return TCL_ERROR;

    Tcl_Flush(channel);
    Tcl_Seek(channel, 0, SEEK_SET);

    instanceData = Tcl_GetChannelInstanceData(channel);
    *ppBlob = *((sqlite3_blob **)instanceData);
  }

  return TCL_OK;
}

/*
** sqlite3_blob_bytes  CHANNEL
*/
static int test_blob_bytes(
  ClientData clientData, /* Not used */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){
  sqlite3_blob *pBlob;
  int nByte;
  
  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "CHANNEL");
    return TCL_ERROR;
  }

  if( blobHandleFromObj(interp, objv[1], &pBlob) ) return TCL_ERROR;
  nByte = sqlite3_blob_bytes(pBlob);
  Tcl_SetObjResult(interp, Tcl_NewIntObj(nByte));

  return TCL_OK;
}

/*
** sqlite3_blob_close  CHANNEL
*/
static int test_blob_close(
  ClientData clientData, /* Not used */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){
  sqlite3_blob *pBlob;
  int nByte;
  
  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "CHANNEL");
    return TCL_ERROR;
  }

  if( blobHandleFromObj(interp, objv[1], &pBlob) ) return TCL_ERROR;
  sqlite3_blob_close(pBlob);

  return TCL_OK;
}

/*
** sqlite3_blob_read  CHANNEL OFFSET N
**
**   This command is used to test the sqlite3_blob_read() in ways that
**   the Tcl channel interface does not. The first argument should
**   be the name of a valid channel created by the [incrblob] method

*/
static int test_blob_read(
  ClientData clientData, /* Not used */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){


  sqlite3_blob *pBlob;

  int nByte;
  int iOffset;
  unsigned char *zBuf;
  int rc;
  
  if( objc!=4 ){
    Tcl_WrongNumArgs(interp, 1, objv, "CHANNEL OFFSET N");
    return TCL_ERROR;
  }


  if( blobHandleFromObj(interp, objv[1], &pBlob) ) return TCL_ERROR;
  if( TCL_OK!=Tcl_GetIntFromObj(interp, objv[2], &iOffset)
   || TCL_OK!=Tcl_GetIntFromObj(interp, objv[3], &nByte)

  ){ 
    return TCL_ERROR;
  }




  zBuf = (unsigned char *)Tcl_Alloc(nByte);
  rc = sqlite3_blob_read(pBlob, zBuf, nByte, iOffset);
  if( rc==SQLITE_OK ){
    Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(zBuf, nByte));
  }else{
    Tcl_SetResult(interp, (char *)sqlite3TestErrorName(rc), TCL_VOLATILE);
  }

*/
static int test_blob_write(
  ClientData clientData, /* Not used */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){


  sqlite3_blob *pBlob;

  int iOffset;
  int rc;

  unsigned char *zBuf;
  int nBuf;
  
  if( objc!=4 && objc!=5 ){
    Tcl_WrongNumArgs(interp, 1, objv, "CHANNEL OFFSET DATA ?NDATA?");
    return TCL_ERROR;
  }

  if( blobHandleFromObj(interp, objv[1], &pBlob) ) return TCL_ERROR;
  if( TCL_OK!=Tcl_GetIntFromObj(interp, objv[2], &iOffset) ){ 
    return TCL_ERROR;
  }




  zBuf = Tcl_GetByteArrayFromObj(objv[3], &nBuf);
  if( objc==5 && Tcl_GetIntFromObj(interp, objv[4], &nBuf) ){
    return TCL_ERROR;
  }
  rc = sqlite3_blob_write(pBlob, zBuf, nBuf, iOffset);
  if( rc!=SQLITE_OK ){
    Tcl_SetResult(interp, (char *)sqlite3TestErrorName(rc), TCL_VOLATILE);
  }

  return (rc==SQLITE_OK ? TCL_OK : TCL_ERROR);
}

static int test_blob_reopen(
  ClientData clientData, /* Not used */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){
  Tcl_WideInt iRowid;


  sqlite3_blob *pBlob;

  int rc;

  unsigned char *zBuf;
  int nBuf;
  
  if( objc!=3 ){
    Tcl_WrongNumArgs(interp, 1, objv, "CHANNEL ROWID");
    return TCL_ERROR;
  }

  if( blobHandleFromObj(interp, objv[1], &pBlob) ) return TCL_ERROR;
  if( Tcl_GetWideIntFromObj(interp, objv[2], &iRowid) ) return TCL_ERROR;













  rc = sqlite3_blob_reopen(pBlob, iRowid);
  if( rc!=SQLITE_OK ){
    Tcl_SetResult(interp, (char *)sqlite3TestErrorName(rc), TCL_VOLATILE);
  }

  return (rc==SQLITE_OK ? TCL_OK : TCL_ERROR);

     { "sqlite3_shared_cache_report", sqlite3BtreeSharedCacheReport, 0},
#endif
     { "sqlite3_libversion_number", test_libversion_number, 0  },
#ifdef SQLITE_ENABLE_COLUMN_METADATA
     { "sqlite3_table_column_metadata", test_table_column_metadata, 0  },
#endif
#ifndef SQLITE_OMIT_INCRBLOB
     { "sqlite3_blob_read",   test_blob_read, 0  },
     { "sqlite3_blob_write",  test_blob_write, 0  },
     { "sqlite3_blob_reopen", test_blob_reopen, 0  },
     { "sqlite3_blob_bytes",  test_blob_bytes, 0  },
     { "sqlite3_blob_close",  test_blob_close, 0  },
#endif
     { "pcache_stats",       test_pcache_stats, 0  },
#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
     { "sqlite3_unlock_notify", test_unlock_notify, 0  },
#endif
     { "sqlite3_wal_checkpoint", test_wal_checkpoint, 0  },
     { "test_sqlite3_log",     test_sqlite3_log, 0  },

    {OP_Column, 0, 0, 1},          /* 7  */
    {OP_ResultRow, 1, 0, 0},       /* 8  */
    {OP_Goto, 0, 5, 0},            /* 9  */
    {OP_Close, 0, 0, 0},           /* 10 */
    {OP_Halt, 0, 0, 0},            /* 11 */
  };


  int rc = SQLITE_OK;
  char *zErr = 0;
  Table *pTab;
  Parse *pParse = 0;
  Incrblob *pBlob = 0;

  flags = !!flags;                /* flags = (flags ? 1 : 0); */
  *ppBlob = 0;

  sqlite3_mutex_enter(db->mutex);

  pBlob = (Incrblob *)sqlite3DbMallocZero(db, sizeof(Incrblob));
  if( !pBlob ) goto blob_open_out;
  pParse = sqlite3StackAllocRaw(db, sizeof(*pParse));


  if( !pParse ) goto blob_open_out;


  do {
    memset(pParse, 0, sizeof(Parse));
    pParse->db = db;
    sqlite3DbFree(db, zErr);
    zErr = 0;

    sqlite3BtreeEnterAll(db);
    pTab = sqlite3LocateTable(pParse, 0, zTable, zDb);
    if( pTab && IsVirtual(pTab) ){
      pTab = 0;
      sqlite3ErrorMsg(pParse, "cannot open virtual table: %s", zTable);
    }

      }
      rc = SQLITE_ERROR;
      sqlite3BtreeLeaveAll(db);
      goto blob_open_out;
    }

    /* Now search pTab for the exact column. */
    for(iCol=0; iCol<pTab->nCol; iCol++) {
      if( sqlite3StrICmp(pTab->aCol[iCol].zName, zColumn)==0 ){
        break;
      }
    }
    if( iCol==pTab->nCol ){
      sqlite3DbFree(db, zErr);
      zErr = sqlite3MPrintf(db, "no such column: \"%s\"", zColumn);

        zErr = sqlite3MPrintf(db, "cannot open %s column for writing", zFault);
        rc = SQLITE_ERROR;
        sqlite3BtreeLeaveAll(db);
        goto blob_open_out;
      }
    }

    pBlob->pStmt = (sqlite3_stmt *)sqlite3VdbeCreate(db);
    assert( pBlob->pStmt || db->mallocFailed );
    if( pBlob->pStmt ){
      Vdbe *v = (Vdbe *)pBlob->pStmt;
      int iDb = sqlite3SchemaToIndex(db, pTab->pSchema);

      sqlite3VdbeAddOpList(v, sizeof(openBlob)/sizeof(VdbeOpList), openBlob);


      /* Configure the OP_Transaction */
      sqlite3VdbeChangeP1(v, 0, iDb);
      sqlite3VdbeChangeP2(v, 0, flags);

      /* Configure the OP_VerifyCookie */
      sqlite3VdbeChangeP1(v, 1, iDb);

      sqlite3VdbeChangeP2(v, 7, pTab->nCol);
      if( !db->mallocFailed ){
        sqlite3VdbeMakeReady(v, 1, 1, 1, 0, 0, 0);
      }
    }
   
    pBlob->flags = flags;

    pBlob->iCol = iCol;
    pBlob->db = db;
    sqlite3BtreeLeaveAll(db);

    if( db->mallocFailed ){
      goto blob_open_out;
    }
    sqlite3_bind_int64(pBlob->pStmt, 1, iRow);
    rc = blobSeekToRow(pBlob, iRow, &zErr);
  } while( (++nAttempt)<5 && rc==SQLITE_SCHEMA );

blob_open_out:
  if( rc==SQLITE_OK && db->mallocFailed==0 ){
    *ppBlob = (sqlite3_blob *)pBlob;
  }else{

    if( pBlob && pBlob->pStmt ) sqlite3VdbeFinalize((Vdbe *)pBlob->pStmt);
    sqlite3DbFree(db, pBlob);
  }
  sqlite3Error(db, rc, (zErr ? "%s" : 0), zErr);
  sqlite3DbFree(db, zErr);
  sqlite3StackFree(db, pParse);
  rc = sqlite3ApiExit(db, rc);

# 2010 October 20
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

sqlite3 db test.db
sqlite3_db_config_lookaside db 0 0 0

do_execsql_test incrblob3-1.1 {
  CREATE TABLE blobs(k INTEGER PRIMARY KEY, v BLOB);
  INSERT INTO blobs VALUES(1, zeroblob(100));
  INSERT INTO blobs VALUES(2, zeroblob(100));
} {}

# Test the sqlite3_blob_reopen()/read()/write() functions.
#
do_test incrblob3-1.2 {
  set ::blob [db incrblob blobs v 1]
  puts $::blob "hello world"
} {}

do_test incrblob3-1.3 {
  sqlite3_blob_reopen $::blob 2
  puts $::blob "world hello"
} {}

do_test incrblob3-1.4 {
  sqlite3_blob_reopen $::blob 1
  gets $::blob
} {hello world}

do_test incrblob3-1.5 {
  sqlite3_blob_reopen $::blob 2
  gets $::blob
} {world hello}

do_test incrblob3-1.6 { close $::blob } {}

# Test some error conditions.
#
#   incrblob3-2.1: Attempting to reopen a row that does not exist.
#   incrblob3-2.2: Attempting to reopen a row that does not contain a blob
#                  or text value.
#
do_test incrblob3-2.1.1 {
  set ::blob [db incrblob blobs v 1]
  list [catch {sqlite3_blob_reopen $::blob 3} msg] $msg
} {1 SQLITE_ERROR}
do_test incrblob3-2.1.2 {
  list [sqlite3_errcode db] [sqlite3_errmsg db]
} {SQLITE_ERROR {no such rowid: 3}}
do_test incrblob3-2.1.3 {
  list [catch {sqlite3_blob_reopen $::blob 1} msg] $msg
} {1 SQLITE_ABORT}
do_test incrblob3-2.1.4 { close $::blob } {}

do_execsql_test incrblob3-2.2.1 {
  INSERT INTO blobs VALUES(3, 42);
  INSERT INTO blobs VALUES(4, 54.4);
  INSERT INTO blobs VALUES(5, NULL);
}
foreach {tn rowid type} {
  1 3 integer
  2 4 real
  3 5 null
} {
  do_test incrblob3-2.2.$tn.1 {
    set ::blob [db incrblob blobs v 1]
    list [catch {sqlite3_blob_reopen $::blob $rowid} msg] $msg
  } {1 SQLITE_ERROR}
  do_test incrblob3-2.2.$tn.2 {
    list [sqlite3_errcode db] [sqlite3_errmsg db]
  } "SQLITE_ERROR {cannot open value of type $type}"

  do_test incrblob3-2.2.$tn.3 {
    list [catch {sqlite3_blob_reopen $::blob 1} msg] $msg
  } {1 SQLITE_ABORT}
  do_test incrblob3-2.2.$tn.4 {
    list [catch {sqlite3_blob_read $::blob 0 10} msg] $msg
  } {1 SQLITE_ABORT}
  do_test incrblob3-2.2.$tn.5 {
    list [catch {sqlite3_blob_write $::blob 0 "abcd"} msg] $msg
  } {1 SQLITE_ABORT}

  do_test incrblob3-2.2.$tn.4 { close $::blob } {}
}

# Test that passing NULL to sqlite3_blob_XXX() APIs returns SQLITE_MISUSE.
#
#   incrblob3-3.1: sqlite3_blob_reopen()
#   incrblob3-3.2: sqlite3_blob_read()
#   incrblob3-3.3: sqlite3_blob_write()
#   incrblob3-3.4: sqlite3_blob_bytes()
#
do_test incrblob3-3.1 {
  list [catch {sqlite3_blob_reopen {} 3} msg] $msg
} {1 SQLITE_MISUSE}

do_test incrblob3-3.2 {
  list [catch {sqlite3_blob_read {} 0 10} msg] $msg
} {1 SQLITE_MISUSE}

do_test incrblob3-3.3 {
  list [catch {sqlite3_blob_write {} 0 "abcd"} msg] $msg
} {1 SQLITE_MISUSE}

do_test incrblob3-3.4 { sqlite3_blob_bytes {} } {0}

do_test incrblob3-3.5 { sqlite3_blob_close {} } {}

# Test out-of-range reading and writing
#
do_test incrblob3-4.1 {
  set ::blob [db incrblob blobs v 1]
  sqlite3_blob_bytes $::blob
} {100}
do_test incrblob3-4.2 {
  list [catch { sqlite3_blob_read $::blob -1 10 } msg] $msg
} {1 SQLITE_ERROR}
do_test incrblob3-4.3 {
  list [catch { sqlite3_blob_read $::blob 0 -10 } msg] $msg
} {1 SQLITE_ERROR}
do_test incrblob3-4.4 {
  list [catch { sqlite3_blob_read $::blob 95 10 } msg] $msg
} {1 SQLITE_ERROR}
do_test incrblob3-4.5 {
  list [catch { sqlite3_blob_write $::blob -1 "abcdefghij" 10 } msg] $msg
} {1 SQLITE_ERROR}
do_test incrblob3-4.6 {
  list [catch { sqlite3_blob_write $::blob 0 "abcdefghij" -10 } msg] $msg
} {1 SQLITE_ERROR}
do_test incrblob3-4.7 {
  list [catch { sqlite3_blob_write $::blob 95 "abcdefghij" } msg] $msg
} {1 SQLITE_ERROR}

do_test incrblob3-4.8 { close $::blob } {}

# Test that modifying the row a blob handle points to aborts the blob.
#
do_test incrblob3-5.1 {
  set ::blob [db incrblob blobs v 1]
  sqlite3_blob_bytes $::blob
} {100}
do_test incrblob3-5.2 {
  execsql { UPDATE blobs SET v = '123456789012345678901234567890' WHERE k = 1 }
  list [catch { sqlite3_blob_read $::blob 0 10 } msg] $msg
} {1 SQLITE_ABORT}

# Test various errors that can occur in sqlite3_blob_open():
#
#   1. Trying to open a virtual table column.
#   2. Trying to open a view column.
#   3. Trying to open a column that does not exist.
#   4. Trying to open a read/write handle on an indexed column.
#   5. Trying to open a read/write handle on the child key of an FK constraint.
#
ifcapable fts3 {
  do_test incrblob3-6.1 {
    execsql {
      CREATE VIRTUAL TABLE ft USING fts3;
      INSERT INTO ft VALUES('rules to open a column to which');
    }

    list [catch { db incrblob ft content 1 } msg] $msg
  } {1 {cannot open virtual table: ft}}
}
ifcapable view {
  do_test incrblob3-6.2 {
    execsql { CREATE VIEW v1 AS SELECT * FROM blobs }
    list [catch { db incrblob v1 content 1 } msg] $msg
  } {1 {cannot open view: v1}}
}

do_test incrblob3-6.3 {
  list [catch { db incrblob blobs content 1 } msg] $msg
} {1 {no such column: "content"}}

do_test incrblob3-6.4.1 {
  execsql { 
    CREATE TABLE t1(a, b);
    CREATE INDEX i1 ON t1(b);
    INSERT INTO t1 VALUES(zeroblob(100), zeroblob(100));
  }
  list [catch { db incrblob t1 b 1 } msg] $msg
} {1 {cannot open indexed column for writing}}
do_test incrblob3-6.4.2 {
  set ::blob [db incrblob t1 a 1]
  close $::blob
} {}
do_test incrblob3-6.4.3 {
  set ::blob [db incrblob -readonly t1 b 1]
  close $::blob
} {}

do_test incrblob3-6.5.1 {
  execsql { 
    CREATE TABLE p1(a PRIMARY KEY);
    CREATE TABLE c1(a, b REFERENCES p1);
    PRAGMA foreign_keys = 1;
    INSERT INTO p1 VALUES(zeroblob(100));
    INSERT INTO c1 VALUES(zeroblob(100), zeroblob(100));
  }
  list [catch { db incrblob c1 b 1 } msg] $msg
} {1 {cannot open foreign key column for writing}}

do_test incrblob3-6.5.2 {
  set ::blob [db incrblob c1 a 1]
  close $::blob
} {}
do_test incrblob3-6.5.3 {
  set ::blob [db incrblob -readonly c1 b 1]
  close $::blob
} {}
do_test incrblob3-6.5.4 {
  execsql { PRAGMA foreign_keys = 0 }
  set ::blob [db incrblob c1 b 1]
  close $::blob
} {}


# Test that sqlite3_blob_open() handles transient and persistent schema 
# errors correctly.
#
do_test incrblob3-7.1 {
  sqlite3 db2 test.db
  sqlite3_db_config_lookaside db2 0 0 0
  execsql { CREATE TABLE t2(x) } db2
  set ::blob [db incrblob blobs v 1]
  close $::blob
} {}
db2 close

testvfs tvfs -default 1
tvfs filter xAccess
tvfs script access_method

proc access_method {args} {
  set schemacookie [hexio_get_int [hexio_read test.db 40 4]]
  incr schemacookie
  hexio_write test.db 40 [hexio_render_int32 $schemacookie]

  set dbversion [hexio_get_int [hexio_read test.db 24 4]]
  incr dbversion
  hexio_write test.db 24 [hexio_render_int32 $dbversion]

  return ""
}

do_test incrblob3-7.2 {
  sqlite3 db test.db 
  sqlite3_db_config_lookaside db 0 0 0
  list [catch {db incrblob blobs v 1} msg] $msg
} {1 {database schema has changed}}
db close
tvfs delete

finish_test

# 2010 October 26
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

set testprefix incrblobfault

do_execsql_test 1.0 {
  CREATE TABLE blob(x INTEGER PRIMARY KEY, v BLOB);
  INSERT INTO blob VALUES(1, 'hello world');
  INSERT INTO blob VALUES(2, 'world hello');
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
  INSERT INTO blob SELECT NULL, v FROM blob;
}

do_faultsim_test 1 -prep {
  sqlite3 db test.db
  set ::blob [db incrblob blob v 1]
} -body {
  if {[catch {sqlite3_blob_reopen $::blob 1000}]} {
    error [sqlite3_errmsg db]
  }
} -test {
  faultsim_test_result {0 {}}
  close $::blob
}

do_faultsim_test 2 -prep {
  sqlite3 db test.db
  set ::blob [db incrblob blob v 1]
} -body {
  if {[catch {sqlite3_blob_reopen $::blob -1}]} {
    error [sqlite3_errmsg db]
  }
} -test {
  faultsim_test_result {1 {no such rowid: -1}}
  close $::blob
}

do_faultsim_test 3 -prep {
  sqlite3 db test.db
} -body {
  set ::blob [db incrblob blob v 1]
  gets $::blob
} -test {
  faultsim_test_result {0 {hello world}}
  catch { close $::blob }
}

finish_test