[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/src/vdbeblob.c

Index: third_party/sqlite/sqlite-src-3080704/src/vdbeblob.c
diff --git a/third_party/sqlite/sqlite-src-3080704/src/vdbeblob.c b/third_party/sqlite/sqlite-src-3080704/src/vdbeblob.c
deleted file mode 100644
index 71bd8816d5a22b0d623d55e01e70653390dd630e..0000000000000000000000000000000000000000
--- a/third_party/sqlite/sqlite-src-3080704/src/vdbeblob.c
+++ /dev/null
@@ -1,466 +0,0 @@
-/*
-** 2007 May 1
-**
-** 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.
-**
-*************************************************************************
-**
-** This file contains code used to implement incremental BLOB I/O.
-*/
-
-#include "sqliteInt.h"
-#include "vdbeInt.h"
-
-#ifndef SQLITE_OMIT_INCRBLOB
-
-/*
-** Valid sqlite3_blob* handles point to Incrblob structures.
-*/
-typedef struct Incrblob Incrblob;
-struct Incrblob {
-  int flags;              /* Copy of "flags" passed to sqlite3_blob_open() */
-  int nByte;              /* Size of open blob, in bytes */
-  int iOffset;            /* Byte offset of blob in cursor data */
-  int iCol;               /* Table column this handle is open on */
-  BtCursor *pCsr;         /* Cursor pointing at blob row */
-  sqlite3_stmt *pStmt;    /* Statement holding cursor open */
-  sqlite3 *db;            /* The associated database */
-};
-
-
-/*
-** This function is used by both blob_open() and blob_reopen(). It seeks
-** the b-tree cursor associated with blob handle p to point to row iRow.
-** If successful, SQLITE_OK is returned and subsequent calls to
-** sqlite3_blob_read() or sqlite3_blob_write() access the specified row.
-**
-** If an error occurs, or if the specified row does not exist or does not
-** contain a value of type TEXT or BLOB in the column nominated when the
-** blob handle was opened, then an error code is returned and *pzErr may
-** be set to point to a buffer containing an error message. It is the
-** responsibility of the caller to free the error message buffer using
-** sqlite3DbFree().
-**
-** If an error does occur, then the b-tree cursor is closed. All subsequent
-** calls to sqlite3_blob_read(), blob_write() or blob_reopen() will 
-** immediately return SQLITE_ABORT.
-*/
-static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){
-  int rc;                         /* Error code */
-  char *zErr = 0;                 /* Error message */
-  Vdbe *v = (Vdbe *)p->pStmt;
-
-  /* Set the value of the SQL statements only variable to integer iRow. 
-  ** This is done directly instead of using sqlite3_bind_int64() to avoid 
-  ** triggering asserts related to mutexes.
-  */
-  assert( v->aVar[0].flags&MEM_Int );
-  v->aVar[0].u.i = iRow;
-
-  rc = sqlite3_step(p->pStmt);
-  if( rc==SQLITE_ROW ){
-    VdbeCursor *pC = v->apCsr[0];
-    u32 type = pC->aType[p->iCol];
-    if( type<12 ){
-      zErr = sqlite3MPrintf(p->db, "cannot open value of type %s",
-          type==0?"null": type==7?"real": "integer"
-      );
-      rc = SQLITE_ERROR;
-      sqlite3_finalize(p->pStmt);
-      p->pStmt = 0;
-    }else{
-      p->iOffset = pC->aType[p->iCol + pC->nField];
-      p->nByte = sqlite3VdbeSerialTypeLen(type);
-      p->pCsr =  pC->pCursor;
-      sqlite3BtreeIncrblobCursor(p->pCsr);
-    }
-  }
-
-  if( rc==SQLITE_ROW ){
-    rc = SQLITE_OK;
-  }else if( p->pStmt ){
-    rc = sqlite3_finalize(p->pStmt);
-    p->pStmt = 0;
-    if( rc==SQLITE_OK ){
-      zErr = sqlite3MPrintf(p->db, "no such rowid: %lld", iRow);
-      rc = SQLITE_ERROR;
-    }else{
-      zErr = sqlite3MPrintf(p->db, "%s", sqlite3_errmsg(p->db));
-    }
-  }
-
-  assert( rc!=SQLITE_OK || zErr==0 );
-  assert( rc!=SQLITE_ROW && rc!=SQLITE_DONE );
-
-  *pzErr = zErr;
-  return rc;
-}
-
-/*
-** Open a blob handle.
-*/
-int sqlite3_blob_open(
-  sqlite3* db,            /* The database connection */
-  const char *zDb,        /* The attached database containing the blob */
-  const char *zTable,     /* The table containing the blob */
-  const char *zColumn,    /* The column containing the blob */
-  sqlite_int64 iRow,      /* The row containing the glob */
-  int flags,              /* True -> read/write access, false -> read-only */
-  sqlite3_blob **ppBlob   /* Handle for accessing the blob returned here */
-){
-  int nAttempt = 0;
-  int iCol;               /* Index of zColumn in row-record */
-
-  /* This VDBE program seeks a btree cursor to the identified 
-  ** db/table/row entry. The reason for using a vdbe program instead
-  ** of writing code to use the b-tree layer directly is that the
-  ** vdbe program will take advantage of the various transaction,
-  ** locking and error handling infrastructure built into the vdbe.
-  **
-  ** After seeking the cursor, the vdbe executes an OP_ResultRow.
-  ** Code external to the Vdbe then "borrows" the b-tree cursor and
-  ** uses it to implement the blob_read(), blob_write() and 
-  ** blob_bytes() functions.
-  **
-  ** The sqlite3_blob_close() function finalizes the vdbe program,
-  ** which closes the b-tree cursor and (possibly) commits the 
-  ** transaction.
-  */
-  static const int iLn = VDBE_OFFSET_LINENO(4);
-  static const VdbeOpList openBlob[] = {
-    /* {OP_Transaction, 0, 0, 0},  // 0: Inserted separately */
-    {OP_TableLock, 0, 0, 0},       /* 1: Acquire a read or write lock */
-    /* One of the following two instructions is replaced by an OP_Noop. */
-    {OP_OpenRead, 0, 0, 0},        /* 2: Open cursor 0 for reading */
-    {OP_OpenWrite, 0, 0, 0},       /* 3: Open cursor 0 for read/write */
-    {OP_Variable, 1, 1, 1},        /* 4: Push the rowid to the stack */
-    {OP_NotExists, 0, 10, 1},      /* 5: Seek the cursor */
-    {OP_Column, 0, 0, 1},          /* 6  */
-    {OP_ResultRow, 1, 0, 0},       /* 7  */
-    {OP_Goto, 0, 4, 0},            /* 8  */
-    {OP_Close, 0, 0, 0},           /* 9  */
-    {OP_Halt, 0, 0, 0},            /* 10 */
-  };
-
-  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);
-    }
-    if( pTab && !HasRowid(pTab) ){
-      pTab = 0;
-      sqlite3ErrorMsg(pParse, "cannot open table without rowid: %s", zTable);
-    }
-#ifndef SQLITE_OMIT_VIEW
-    if( pTab && pTab->pSelect ){
-      pTab = 0;
-      sqlite3ErrorMsg(pParse, "cannot open view: %s", zTable);
-    }
-#endif
-    if( !pTab ){
-      if( pParse->zErrMsg ){
-        sqlite3DbFree(db, zErr);
-        zErr = pParse->zErrMsg;
-        pParse->zErrMsg = 0;
-      }
-      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);
-      rc = SQLITE_ERROR;
-      sqlite3BtreeLeaveAll(db);
-      goto blob_open_out;
-    }
-
-    /* If the value is being opened for writing, check that the
-    ** column is not indexed, and that it is not part of a foreign key. 
-    ** It is against the rules to open a column to which either of these
-    ** descriptions applies for writing.  */
-    if( flags ){
-      const char *zFault = 0;
-      Index *pIdx;
-#ifndef SQLITE_OMIT_FOREIGN_KEY
-      if( db->flags&SQLITE_ForeignKeys ){
-        /* Check that the column is not part of an FK child key definition. It
-        ** is not necessary to check if it is part of a parent key, as parent
-        ** key columns must be indexed. The check below will pick up this 
-        ** case.  */
-        FKey *pFKey;
-        for(pFKey=pTab->pFKey; pFKey; pFKey=pFKey->pNextFrom){
-          int j;
-          for(j=0; j<pFKey->nCol; j++){
-            if( pFKey->aCol[j].iFrom==iCol ){
-              zFault = "foreign key";
-            }
-          }
-        }
-      }
-#endif
-      for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
-        int j;
-        for(j=0; j<pIdx->nKeyCol; j++){
-          if( pIdx->aiColumn[j]==iCol ){
-            zFault = "indexed";
-          }
-        }
-      }
-      if( zFault ){
-        sqlite3DbFree(db, zErr);
-        zErr = sqlite3MPrintf(db, "cannot open %s column for writing", zFault);
-        rc = SQLITE_ERROR;
-        sqlite3BtreeLeaveAll(db);
-        goto blob_open_out;
-      }
-    }
-
-    pBlob->pStmt = (sqlite3_stmt *)sqlite3VdbeCreate(pParse);
-    assert( pBlob->pStmt || db->mallocFailed );
-    if( pBlob->pStmt ){
-      Vdbe *v = (Vdbe *)pBlob->pStmt;
-      int iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
-
-
-      sqlite3VdbeAddOp4Int(v, OP_Transaction, iDb, flags, 
-                           pTab->pSchema->schema_cookie,
-                           pTab->pSchema->iGeneration);
-      sqlite3VdbeChangeP5(v, 1);     
-      sqlite3VdbeAddOpList(v, ArraySize(openBlob), openBlob, iLn);
-
-      /* Make sure a mutex is held on the table to be accessed */
-      sqlite3VdbeUsesBtree(v, iDb); 
-
-      /* Configure the OP_TableLock instruction */
-#ifdef SQLITE_OMIT_SHARED_CACHE
-      sqlite3VdbeChangeToNoop(v, 1);
-#else
-      sqlite3VdbeChangeP1(v, 1, iDb);
-      sqlite3VdbeChangeP2(v, 1, pTab->tnum);
-      sqlite3VdbeChangeP3(v, 1, flags);
-      sqlite3VdbeChangeP4(v, 1, pTab->zName, P4_TRANSIENT);
-#endif
-
-      /* Remove either the OP_OpenWrite or OpenRead. Set the P2 
-      ** parameter of the other to pTab->tnum.  */
-      sqlite3VdbeChangeToNoop(v, 3 - flags);
-      sqlite3VdbeChangeP2(v, 2 + flags, pTab->tnum);
-      sqlite3VdbeChangeP3(v, 2 + flags, iDb);
-
-      /* Configure the number of columns. Configure the cursor to
-      ** think that the table has one more column than it really
-      ** does. An OP_Column to retrieve this imaginary column will
-      ** always return an SQL NULL. This is useful because it means
-      ** we can invoke OP_Column to fill in the vdbe cursors type 
-      ** and offset cache without causing any IO.
-      */
-      sqlite3VdbeChangeP4(v, 2+flags, SQLITE_INT_TO_PTR(pTab->nCol+1),P4_INT32);
-      sqlite3VdbeChangeP2(v, 6, pTab->nCol);
-      if( !db->mallocFailed ){
-        pParse->nVar = 1;
-        pParse->nMem = 1;
-        pParse->nTab = 1;
-        sqlite3VdbeMakeReady(v, pParse);
-      }
-    }
-   
-    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)<SQLITE_MAX_SCHEMA_RETRY && 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);
-  }
-  sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : 0), zErr);
-  sqlite3DbFree(db, zErr);
-  sqlite3ParserReset(pParse);
-  sqlite3StackFree(db, pParse);
-  rc = sqlite3ApiExit(db, rc);
-  sqlite3_mutex_leave(db->mutex);
-  return rc;
-}
-
-/*
-** Close a blob handle that was previously created using
-** sqlite3_blob_open().
-*/
-int sqlite3_blob_close(sqlite3_blob *pBlob){
-  Incrblob *p = (Incrblob *)pBlob;
-  int rc;
-  sqlite3 *db;
-
-  if( p ){
-    db = p->db;
-    sqlite3_mutex_enter(db->mutex);
-    rc = sqlite3_finalize(p->pStmt);
-    sqlite3DbFree(db, p);
-    sqlite3_mutex_leave(db->mutex);
-  }else{
-    rc = SQLITE_OK;
-  }
-  return rc;
-}
-
-/*
-** Perform a read or write operation on a blob
-*/
-static int blobReadWrite(
-  sqlite3_blob *pBlob, 
-  void *z, 
-  int n, 
-  int iOffset, 
-  int (*xCall)(BtCursor*, u32, u32, void*)
-){
-  int rc;
-  Incrblob *p = (Incrblob *)pBlob;
-  Vdbe *v;
-  sqlite3 *db;
-
-  if( p==0 ) return SQLITE_MISUSE_BKPT;
-  db = p->db;
-  sqlite3_mutex_enter(db->mutex);
-  v = (Vdbe*)p->pStmt;
-
-  if( n<0 || iOffset<0 || (iOffset+n)>p->nByte ){
-    /* Request is out of range. Return a transient error. */
-    rc = SQLITE_ERROR;
-    sqlite3Error(db, SQLITE_ERROR);
-  }else if( v==0 ){
-    /* If there is no statement handle, then the blob-handle has
-    ** already been invalidated. Return SQLITE_ABORT in this case.
-    */
-    rc = SQLITE_ABORT;
-  }else{
-    /* Call either BtreeData() or BtreePutData(). If SQLITE_ABORT is
-    ** returned, clean-up the statement handle.
-    */
-    assert( db == v->db );
-    sqlite3BtreeEnterCursor(p->pCsr);
-    rc = xCall(p->pCsr, iOffset+p->iOffset, n, z);
-    sqlite3BtreeLeaveCursor(p->pCsr);
-    if( rc==SQLITE_ABORT ){
-      sqlite3VdbeFinalize(v);
-      p->pStmt = 0;
-    }else{
-      db->errCode = rc;
-      v->rc = rc;
-    }
-  }
-  rc = sqlite3ApiExit(db, rc);
-  sqlite3_mutex_leave(db->mutex);
-  return rc;
-}
-
-/*
-** Read data from a blob handle.
-*/
-int sqlite3_blob_read(sqlite3_blob *pBlob, void *z, int n, int iOffset){
-  return blobReadWrite(pBlob, z, n, iOffset, sqlite3BtreeData);
-}
-
-/*
-** Write data to a blob handle.
-*/
-int sqlite3_blob_write(sqlite3_blob *pBlob, const void *z, int n, int iOffset){
-  return blobReadWrite(pBlob, (void *)z, n, iOffset, sqlite3BtreePutData);
-}
-
-/*
-** Query a blob handle for the size of the data.
-**
-** The Incrblob.nByte field is fixed for the lifetime of the Incrblob
-** so no mutex is required for access.
-*/
-int sqlite3_blob_bytes(sqlite3_blob *pBlob){
-  Incrblob *p = (Incrblob *)pBlob;
-  return (p && p->pStmt) ? p->nByte : 0;
-}
-
-/*
-** Move an existing blob handle to point to a different row of the same
-** database table.
-**
-** If an error occurs, or if the specified row does not exist or does not
-** contain a blob or text value, then an error code is returned and the
-** database handle error code and message set. If this happens, then all 
-** subsequent calls to sqlite3_blob_xxx() functions (except blob_close()) 
-** immediately return SQLITE_ABORT.
-*/
-int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){
-  int rc;
-  Incrblob *p = (Incrblob *)pBlob;
-  sqlite3 *db;
-
-  if( p==0 ) return SQLITE_MISUSE_BKPT;
-  db = p->db;
-  sqlite3_mutex_enter(db->mutex);
-
-  if( p->pStmt==0 ){
-    /* If there is no statement handle, then the blob-handle has
-    ** already been invalidated. Return SQLITE_ABORT in this case.
-    */
-    rc = SQLITE_ABORT;
-  }else{
-    char *zErr;
-    rc = blobSeekToRow(p, iRow, &zErr);
-    if( rc!=SQLITE_OK ){
-      sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : 0), zErr);
-      sqlite3DbFree(db, zErr);
-    }
-    assert( rc!=SQLITE_SCHEMA );
-  }
-
-  rc = sqlite3ApiExit(db, rc);
-  assert( rc==SQLITE_OK || p->pStmt==0 );
-  sqlite3_mutex_leave(db->mutex);
-  return rc;
-}
-
-#endif /* #ifndef SQLITE_OMIT_INCRBLOB */