385 lines
9.0 KiB
C
385 lines
9.0 KiB
C
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/*
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* Implementation of the Microsoft Installer (msi.dll)
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*
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* Copyright 2002 Mike McCormack for Codeweavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "wine/debug.h"
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#include "msi.h"
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#include "msiquery.h"
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#include "objbase.h"
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#include "objidl.h"
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#include "msipriv.h"
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#include "winnls.h"
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#include "query.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msi);
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/* below is the query interface to a table */
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typedef struct tagMSIWHEREVIEW
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{
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MSIVIEW view;
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MSIDATABASE *db;
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MSIVIEW *table;
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UINT row_count;
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UINT *reorder;
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struct expr *cond;
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} MSIWHEREVIEW;
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static UINT WHERE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
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TRACE("%p %d %d %p\n", wv, row, col, val );
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if( !wv->table )
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return ERROR_FUNCTION_FAILED;
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if( row > wv->row_count )
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return ERROR_NO_MORE_ITEMS;
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row = wv->reorder[ row ];
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return wv->table->ops->fetch_int( wv->table, row, col, val );
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}
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static UINT INT_evaluate( UINT lval, UINT op, UINT rval )
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{
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switch( op )
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{
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case OP_EQ:
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return ( lval == rval );
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case OP_AND:
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return ( lval && rval );
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case OP_OR:
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return ( lval || rval );
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case OP_GT:
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return ( lval > rval );
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case OP_LT:
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return ( lval < rval );
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case OP_LE:
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return ( lval <= rval );
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case OP_GE:
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return ( lval >= rval );
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case OP_NE:
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return ( lval != rval );
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case OP_ISNULL:
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return ( !lval );
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case OP_NOTNULL:
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return ( lval );
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default:
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ERR("Unknown operator %d\n", op );
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}
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return 0;
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}
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static UINT WHERE_evaluate( MSIVIEW *table, UINT row,
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struct expr *cond, UINT *val )
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{
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UINT r, lval, rval;
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if( !cond )
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return ERROR_SUCCESS;
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switch( cond->type )
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{
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case EXPR_COL_NUMBER:
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return table->ops->fetch_int( table, row, cond->u.col_number, val );
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/* case EXPR_IVAL:
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*val = cond->u.ival;
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return ERROR_SUCCESS; */
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case EXPR_UVAL:
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*val = cond->u.uval;
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return ERROR_SUCCESS;
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case EXPR_COMPLEX:
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r = WHERE_evaluate( table, row, cond->u.expr.left, &lval );
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if( r != ERROR_SUCCESS )
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return r;
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r = WHERE_evaluate( table, row, cond->u.expr.right, &rval );
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if( r != ERROR_SUCCESS )
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return r;
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*val = INT_evaluate( lval, cond->u.expr.op, rval );
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return ERROR_SUCCESS;
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default:
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ERR("Invalid expression type\n");
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break;
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}
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return ERROR_SUCCESS;
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}
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static UINT WHERE_execute( struct tagMSIVIEW *view, MSIHANDLE record )
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
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UINT count = 0, r, val, i;
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MSIVIEW *table = wv->table;
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TRACE("%p %ld\n", wv, record);
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if( !table )
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return ERROR_FUNCTION_FAILED;
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r = table->ops->execute( table, record );
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if( r != ERROR_SUCCESS )
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return r;
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r = table->ops->get_dimensions( table, &count, NULL );
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if( r != ERROR_SUCCESS )
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return r;
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wv->reorder = HeapAlloc( GetProcessHeap(), 0, count*sizeof(UINT) );
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if( !wv->reorder )
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return ERROR_FUNCTION_FAILED;
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for( i=0; i<count; i++ )
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{
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val = 0;
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r = WHERE_evaluate( table, i, wv->cond, &val );
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if( r != ERROR_SUCCESS )
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return r;
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if( val )
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wv->reorder[ wv->row_count ++ ] = i;
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}
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return ERROR_SUCCESS;
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}
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static UINT WHERE_close( struct tagMSIVIEW *view )
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
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TRACE("%p\n", wv );
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if( !wv->table )
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return ERROR_FUNCTION_FAILED;
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if( wv->reorder )
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HeapFree( GetProcessHeap(), 0, wv->reorder );
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wv->reorder = NULL;
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return wv->table->ops->close( wv->table );
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}
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static UINT WHERE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
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TRACE("%p %p %p\n", wv, rows, cols );
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if( !wv->table )
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return ERROR_FUNCTION_FAILED;
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if( rows )
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{
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if( !wv->reorder )
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return ERROR_FUNCTION_FAILED;
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*rows = wv->row_count;
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}
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return wv->table->ops->get_dimensions( wv->table, NULL, cols );
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}
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static UINT WHERE_get_column_info( struct tagMSIVIEW *view,
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UINT n, LPWSTR *name, UINT *type )
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
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TRACE("%p %d %p %p\n", wv, n, name, type );
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if( !wv->table )
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return ERROR_FUNCTION_FAILED;
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return wv->table->ops->get_column_info( wv->table, n, name, type );
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}
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static UINT WHERE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode, MSIHANDLE hrec)
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
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TRACE("%p %d %ld\n", wv, eModifyMode, hrec );
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if( !wv->table )
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return ERROR_FUNCTION_FAILED;
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return wv->table->ops->modify( wv->table, eModifyMode, hrec );
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}
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static void WHERE_delete_expr( struct expr *e )
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{
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if( !e )
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return;
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if( e->type == EXPR_COMPLEX )
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{
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WHERE_delete_expr( e->u.expr.left );
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WHERE_delete_expr( e->u.expr.right );
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}
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HeapFree( GetProcessHeap(), 0, e );
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}
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static UINT WHERE_delete( struct tagMSIVIEW *view )
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
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TRACE("%p\n", wv );
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if( wv->table )
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wv->table->ops->delete( wv->table );
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if( wv->reorder )
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HeapFree( GetProcessHeap(), 0, wv->reorder );
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wv->reorder = NULL;
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wv->row_count = 0;
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WHERE_delete_expr( wv->cond );
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HeapFree( GetProcessHeap(), 0, wv );
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return ERROR_SUCCESS;
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}
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MSIVIEWOPS where_ops =
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{
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WHERE_fetch_int,
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WHERE_execute,
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WHERE_close,
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WHERE_get_dimensions,
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WHERE_get_column_info,
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WHERE_modify,
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WHERE_delete
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};
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UINT WHERE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )
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{
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MSIWHEREVIEW *wv = NULL;
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UINT count = 0, r;
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TRACE("%p\n", wv );
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r = table->ops->get_dimensions( table, NULL, &count );
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if( r != ERROR_SUCCESS )
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{
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ERR("can't get table dimensions\n");
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return r;
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}
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wv = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof *wv );
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if( !wv )
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return ERROR_FUNCTION_FAILED;
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/* fill the structure */
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wv->view.ops = &where_ops;
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wv->db = db;
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wv->table = table;
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wv->row_count = 0;
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wv->reorder = NULL;
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*view = (MSIVIEW*) wv;
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return ERROR_SUCCESS;
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}
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static UINT WHERE_VerifyCondition( MSIVIEW *table, struct expr *cond,
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UINT *valid )
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{
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UINT r, col = 0;
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switch( cond->type )
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{
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case EXPR_COLUMN:
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r = VIEW_find_column( table, cond->u.column, &col );
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if( r == ERROR_SUCCESS )
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{
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*valid = 1;
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cond->type = EXPR_COL_NUMBER;
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cond->u.col_number = col;
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}
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else
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{
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*valid = 0;
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ERR("Couldn't find column %s\n", debugstr_w( cond->u.column ) );
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}
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break;
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case EXPR_COMPLEX:
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r = WHERE_VerifyCondition( table, cond->u.expr.left, valid );
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if( r != ERROR_SUCCESS )
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return r;
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if( !*valid )
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return ERROR_SUCCESS;
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r = WHERE_VerifyCondition( table, cond->u.expr.right, valid );
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if( r != ERROR_SUCCESS )
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return r;
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break;
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case EXPR_IVAL:
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*valid = 1;
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cond->type = EXPR_UVAL;
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cond->u.uval = cond->u.ival + (1<<15);
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break;
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case EXPR_SVAL:
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*valid = 0;
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FIXME("can't deal with string values yet\n");
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break;
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default:
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ERR("Invalid expression type\n");
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*valid = 0;
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break;
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}
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return ERROR_SUCCESS;
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}
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UINT WHERE_AddCondition( MSIVIEW *view, struct expr *cond )
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{
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MSIWHEREVIEW *wv = (MSIWHEREVIEW *) view;
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UINT r, valid = 0;
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if( wv->view.ops != &where_ops )
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return ERROR_FUNCTION_FAILED;
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if( !wv->table )
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return ERROR_INVALID_PARAMETER;
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if( !cond )
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return ERROR_SUCCESS;
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TRACE("Adding condition\n");
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r = WHERE_VerifyCondition( wv->table, cond, &valid );
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if( r != ERROR_SUCCESS )
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ERR("condition evaluation failed\n");
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TRACE("condition is %s\n", valid ? "valid" : "invalid" );
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if( !valid )
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{
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WHERE_delete_expr( cond );
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return ERROR_FUNCTION_FAILED;
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}
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wv->cond = cond;
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return ERROR_SUCCESS;
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}
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