323 lines
7.6 KiB
C
323 lines
7.6 KiB
C
/*
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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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(msidb);
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typedef struct tagDISTINCTSET
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{
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UINT val;
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UINT count;
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UINT row;
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struct tagDISTINCTSET *nextrow;
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struct tagDISTINCTSET *nextcol;
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} DISTINCTSET;
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typedef struct tagMSIDISTINCTVIEW
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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 *translation;
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} MSIDISTINCTVIEW;
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static DISTINCTSET ** distinct_insert( DISTINCTSET **x, UINT val, UINT row )
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{
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/* horrible O(n) find */
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while( *x )
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{
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if( (*x)->val == val )
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{
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(*x)->count++;
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return x;
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}
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x = &(*x)->nextrow;
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}
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/* nothing found, so add one */
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*x = msi_alloc( sizeof (DISTINCTSET) );
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if( *x )
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{
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(*x)->val = val;
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(*x)->count = 1;
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(*x)->row = row;
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(*x)->nextrow = NULL;
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(*x)->nextcol = NULL;
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}
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return x;
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}
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static void distinct_free( DISTINCTSET *x )
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{
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while( x )
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{
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DISTINCTSET *next = x->nextrow;
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distinct_free( x->nextcol );
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msi_free( x );
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x = next;
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}
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}
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static UINT DISTINCT_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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TRACE("%p %d %d %p\n", dv, row, col, val );
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if( !dv->table )
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return ERROR_FUNCTION_FAILED;
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if( row >= dv->row_count )
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return ERROR_INVALID_PARAMETER;
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row = dv->translation[ row ];
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return dv->table->ops->fetch_int( dv->table, row, col, val );
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}
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static UINT DISTINCT_execute( struct tagMSIVIEW *view, MSIRECORD *record )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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UINT r, i, j, r_count, c_count;
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DISTINCTSET *rowset = NULL;
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TRACE("%p %p\n", dv, record);
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if( !dv->table )
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return ERROR_FUNCTION_FAILED;
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r = dv->table->ops->execute( dv->table, record );
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if( r != ERROR_SUCCESS )
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return r;
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r = dv->table->ops->get_dimensions( dv->table, &r_count, &c_count );
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if( r != ERROR_SUCCESS )
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return r;
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dv->translation = msi_alloc( r_count*sizeof(UINT) );
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if( !dv->translation )
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return ERROR_FUNCTION_FAILED;
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/* build it */
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for( i=0; i<r_count; i++ )
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{
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DISTINCTSET **x = &rowset;
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for( j=1; j<=c_count; j++ )
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{
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UINT val = 0;
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r = dv->table->ops->fetch_int( dv->table, i, j, &val );
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if( r != ERROR_SUCCESS )
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{
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ERR("Failed to fetch int at %d %d\n", i, j );
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distinct_free( rowset );
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return r;
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}
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x = distinct_insert( x, val, i );
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if( !*x )
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{
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ERR("Failed to insert at %d %d\n", i, j );
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distinct_free( rowset );
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return ERROR_FUNCTION_FAILED;
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}
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if( j != c_count )
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x = &(*x)->nextcol;
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}
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/* check if it was distinct and if so, include it */
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if( (*x)->row == i )
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{
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TRACE("Row %d -> %d\n", dv->row_count, i);
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dv->translation[dv->row_count++] = i;
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}
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}
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distinct_free( rowset );
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return ERROR_SUCCESS;
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}
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static UINT DISTINCT_close( struct tagMSIVIEW *view )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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TRACE("%p\n", dv );
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if( !dv->table )
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return ERROR_FUNCTION_FAILED;
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msi_free( dv->translation );
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dv->translation = NULL;
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dv->row_count = 0;
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return dv->table->ops->close( dv->table );
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}
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static UINT DISTINCT_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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TRACE("%p %p %p\n", dv, rows, cols );
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if( !dv->table )
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return ERROR_FUNCTION_FAILED;
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if( rows )
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{
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if( !dv->translation )
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return ERROR_FUNCTION_FAILED;
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*rows = dv->row_count;
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}
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return dv->table->ops->get_dimensions( dv->table, NULL, cols );
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}
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static UINT DISTINCT_get_column_info( struct tagMSIVIEW *view, UINT n, LPCWSTR *name,
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UINT *type, BOOL *temporary, LPCWSTR *table_name )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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TRACE("%p %d %p %p %p %p\n", dv, n, name, type, temporary, table_name );
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if( !dv->table )
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return ERROR_FUNCTION_FAILED;
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return dv->table->ops->get_column_info( dv->table, n, name,
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type, temporary, table_name );
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}
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static UINT DISTINCT_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
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MSIRECORD *rec, UINT row )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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TRACE("%p %d %p\n", dv, eModifyMode, rec );
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if( !dv->table )
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return ERROR_FUNCTION_FAILED;
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return dv->table->ops->modify( dv->table, eModifyMode, rec, row );
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}
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static UINT DISTINCT_delete( struct tagMSIVIEW *view )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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TRACE("%p\n", dv );
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if( dv->table )
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dv->table->ops->delete( dv->table );
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msi_free( dv->translation );
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msiobj_release( &dv->db->hdr );
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msi_free( dv );
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return ERROR_SUCCESS;
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}
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static UINT DISTINCT_find_matching_rows( struct tagMSIVIEW *view, UINT col,
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UINT val, UINT *row, MSIITERHANDLE *handle )
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{
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MSIDISTINCTVIEW *dv = (MSIDISTINCTVIEW*)view;
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UINT r;
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TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
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if( !dv->table )
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return ERROR_FUNCTION_FAILED;
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r = dv->table->ops->find_matching_rows( dv->table, col, val, row, handle );
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if( *row > dv->row_count )
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return ERROR_NO_MORE_ITEMS;
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*row = dv->translation[ *row ];
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return r;
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}
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static const MSIVIEWOPS distinct_ops =
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{
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DISTINCT_fetch_int,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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DISTINCT_execute,
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DISTINCT_close,
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DISTINCT_get_dimensions,
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DISTINCT_get_column_info,
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DISTINCT_modify,
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DISTINCT_delete,
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DISTINCT_find_matching_rows,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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};
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UINT DISTINCT_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )
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{
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MSIDISTINCTVIEW *dv = NULL;
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UINT count = 0, r;
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TRACE("%p\n", dv );
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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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dv = msi_alloc_zero( sizeof *dv );
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if( !dv )
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return ERROR_FUNCTION_FAILED;
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/* fill the structure */
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dv->view.ops = &distinct_ops;
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msiobj_addref( &db->hdr );
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dv->db = db;
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dv->table = table;
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dv->translation = NULL;
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dv->row_count = 0;
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*view = (MSIVIEW*) dv;
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return ERROR_SUCCESS;
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}
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