Sweden-Number/dlls/msi/select.c

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/*
* Implementation of the Microsoft Installer (msi.dll)
*
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* Copyright 2002-2004 Mike McCormack for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/debug.h"
#include "msi.h"
#include "msiquery.h"
#include "objbase.h"
#include "objidl.h"
#include "msipriv.h"
#include "winnls.h"
#include "query.h"
WINE_DEFAULT_DEBUG_CHANNEL(msidb);
/* below is the query interface to a table */
typedef struct tagMSISELECTVIEW
{
MSIVIEW view;
MSIDATABASE *db;
MSIVIEW *table;
UINT num_cols;
UINT max_cols;
UINT cols[1];
} MSISELECTVIEW;
static UINT SELECT_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p %d %d %p\n", sv, row, col, val );
if( !sv->table )
return ERROR_FUNCTION_FAILED;
if( (col==0) || (col>sv->num_cols) )
return ERROR_FUNCTION_FAILED;
col = sv->cols[ col - 1 ];
return sv->table->ops->fetch_int( sv->table, row, col, val );
}
static UINT SELECT_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p %d %d %p\n", sv, row, col, stm );
if( !sv->table )
return ERROR_FUNCTION_FAILED;
if( (col==0) || (col>sv->num_cols) )
return ERROR_FUNCTION_FAILED;
col = sv->cols[ col - 1 ];
return sv->table->ops->fetch_stream( sv->table, row, col, stm );
}
static UINT SELECT_set_row( struct tagMSIVIEW *view, UINT row, MSIRECORD *rec, UINT mask )
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{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
UINT i, expanded_mask = 0, r = ERROR_SUCCESS, col_count = 0;
MSIRECORD *expanded;
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TRACE("%p %d %p %08x\n", sv, row, rec, mask );
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if ( !sv->table )
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return ERROR_FUNCTION_FAILED;
/* test if any of the mask bits are invalid */
if ( mask >= (1<<sv->num_cols) )
return ERROR_INVALID_PARAMETER;
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/* find the number of columns in the table below */
r = sv->table->ops->get_dimensions( sv->table, NULL, &col_count );
if( r )
return r;
/* expand the record to the right size for the underlying table */
expanded = MSI_CreateRecord( col_count );
if ( !expanded )
return ERROR_FUNCTION_FAILED;
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/* move the right fields across */
for ( i=0; i<sv->num_cols; i++ )
{
r = MSI_RecordCopyField( rec, i+1, expanded, sv->cols[ i ] );
if (r != ERROR_SUCCESS)
break;
expanded_mask |= (1<<(sv->cols[i]-1));
}
/* set the row in the underlying table */
if (r == ERROR_SUCCESS)
r = sv->table->ops->set_row( sv->table, row, expanded, expanded_mask );
msiobj_release( &expanded->hdr );
return r;
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}
static UINT SELECT_insert_row( struct tagMSIVIEW *view, MSIRECORD *record, BOOL temporary )
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{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
UINT i, table_cols, r;
MSIRECORD *outrec;
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TRACE("%p %p\n", sv, record );
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if ( !sv->table )
return ERROR_FUNCTION_FAILED;
/* rearrange the record to suit the table */
r = sv->table->ops->get_dimensions( sv->table, NULL, &table_cols );
if (r != ERROR_SUCCESS)
return r;
outrec = MSI_CreateRecord( table_cols + 1 );
for (i=0; i<sv->num_cols; i++)
{
r = MSI_RecordCopyField( record, i+1, outrec, sv->cols[i] );
if (r != ERROR_SUCCESS)
goto fail;
}
r = sv->table->ops->insert_row( sv->table, outrec, temporary );
fail:
msiobj_release( &outrec->hdr );
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return r;
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}
static UINT SELECT_execute( struct tagMSIVIEW *view, MSIRECORD *record )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p %p\n", sv, record);
if( !sv->table )
return ERROR_FUNCTION_FAILED;
return sv->table->ops->execute( sv->table, record );
}
static UINT SELECT_close( struct tagMSIVIEW *view )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p\n", sv );
if( !sv->table )
return ERROR_FUNCTION_FAILED;
return sv->table->ops->close( sv->table );
}
static UINT SELECT_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p %p %p\n", sv, rows, cols );
if( !sv->table )
return ERROR_FUNCTION_FAILED;
if( cols )
*cols = sv->num_cols;
return sv->table->ops->get_dimensions( sv->table, rows, NULL );
}
static UINT SELECT_get_column_info( struct tagMSIVIEW *view,
UINT n, LPWSTR *name, UINT *type )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p %d %p %p\n", sv, n, name, type );
if( !sv->table )
return ERROR_FUNCTION_FAILED;
if( (n==0) || (n>sv->num_cols) )
return ERROR_FUNCTION_FAILED;
n = sv->cols[ n - 1 ];
return sv->table->ops->get_column_info( sv->table, n, name, type );
}
static UINT SELECT_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
MSIRECORD *rec )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p %d %p\n", sv, eModifyMode, rec );
if( !sv->table )
return ERROR_FUNCTION_FAILED;
return sv->table->ops->modify( sv->table, eModifyMode, rec );
}
static UINT SELECT_delete( struct tagMSIVIEW *view )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p\n", sv );
if( sv->table )
sv->table->ops->delete( sv->table );
sv->table = NULL;
msi_free( sv );
return ERROR_SUCCESS;
}
static UINT SELECT_find_matching_rows( struct tagMSIVIEW *view, UINT col,
UINT val, UINT *row, MSIITERHANDLE *handle )
{
MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
if( !sv->table )
return ERROR_FUNCTION_FAILED;
if( (col==0) || (col>sv->num_cols) )
return ERROR_FUNCTION_FAILED;
col = sv->cols[ col - 1 ];
return sv->table->ops->find_matching_rows( sv->table, col, val, row, handle );
}
static const MSIVIEWOPS select_ops =
{
SELECT_fetch_int,
SELECT_fetch_stream,
SELECT_set_row,
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SELECT_insert_row,
SELECT_execute,
SELECT_close,
SELECT_get_dimensions,
SELECT_get_column_info,
SELECT_modify,
SELECT_delete,
SELECT_find_matching_rows
};
static UINT SELECT_AddColumn( MSISELECTVIEW *sv, LPCWSTR name )
{
UINT r, n=0;
MSIVIEW *table;
TRACE("%p adding %s\n", sv, debugstr_w( name ) );
if( sv->view.ops != &select_ops )
return ERROR_FUNCTION_FAILED;
table = sv->table;
if( !table )
return ERROR_FUNCTION_FAILED;
if( !table->ops->get_dimensions )
return ERROR_FUNCTION_FAILED;
if( !table->ops->get_column_info )
return ERROR_FUNCTION_FAILED;
if( sv->num_cols >= sv->max_cols )
return ERROR_FUNCTION_FAILED;
r = VIEW_find_column( table, name, &n );
if( r != ERROR_SUCCESS )
return r;
sv->cols[sv->num_cols] = n;
TRACE("Translating column %s from %d -> %d\n",
debugstr_w( name ), sv->num_cols, n);
sv->num_cols++;
return ERROR_SUCCESS;
}
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static int select_count_columns( column_info *col )
{
int n;
for (n = 0; col; col = col->next)
n++;
return n;
}
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UINT SELECT_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table,
column_info *columns )
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{
MSISELECTVIEW *sv = NULL;
UINT count = 0, r = ERROR_SUCCESS;
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TRACE("%p\n", sv );
count = select_count_columns( columns );
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sv = msi_alloc_zero( sizeof *sv + count*sizeof (UINT) );
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if( !sv )
return ERROR_FUNCTION_FAILED;
/* fill the structure */
sv->view.ops = &select_ops;
sv->db = db;
sv->table = table;
sv->num_cols = 0;
sv->max_cols = count;
while( columns )
{
r = SELECT_AddColumn( sv, columns->column );
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if( r )
break;
columns = columns->next;
}
if( r == ERROR_SUCCESS )
*view = &sv->view;
else
msi_free( sv );
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return r;
}