2 * Implementation of the Microsoft Installer (msi.dll)
4 * Copyright 2002 Mike McCormack for CodeWeavers
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
26 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(msidb);
39 /* below is the query interface to a table */
41 typedef struct tagMSIORDERVIEW
51 static UINT ORDER_compare( MSIORDERVIEW *ov, UINT a, UINT b, UINT *swap )
53 UINT r, i, a_val = 0, b_val = 0;
56 for( i=0; i<ov->num_cols; i++ )
58 r = ov->table->ops->fetch_int( ov->table, a, ov->cols[i], &a_val );
59 if( r != ERROR_SUCCESS )
62 r = ov->table->ops->fetch_int( ov->table, b, ov->cols[i], &b_val );
63 if( r != ERROR_SUCCESS )
77 static UINT ORDER_mergesort( MSIORDERVIEW *ov, UINT left, UINT right )
79 UINT r, centre = (left + right)/2, temp, swap = 0, i, j;
80 UINT *array = ov->reorder;
85 /* sort the left half */
86 r = ORDER_mergesort( ov, left, centre );
87 if( r != ERROR_SUCCESS )
90 /* sort the right half */
91 r = ORDER_mergesort( ov, centre+1, right );
92 if( r != ERROR_SUCCESS )
95 for( i=left, j=centre+1; (i<=centre) && (j<=right); i++ )
97 r = ORDER_compare( ov, array[i], array[j], &swap );
98 if( r != ERROR_SUCCESS )
103 memmove( &array[i+1], &array[i], (j-i)*sizeof (UINT) );
110 return ERROR_SUCCESS;
113 static UINT ORDER_verify( MSIORDERVIEW *ov, UINT num_rows )
117 for( i=1; i<num_rows; i++ )
119 r = ORDER_compare( ov, ov->reorder[i-1], ov->reorder[i], &swap );
120 if( r != ERROR_SUCCESS )
124 ERR("Bad order! %d\n", i);
125 return ERROR_FUNCTION_FAILED;
128 return ERROR_SUCCESS;
131 static UINT ORDER_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
133 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
135 TRACE("%p %d %d %p\n", ov, row, col, val );
138 return ERROR_FUNCTION_FAILED;
140 row = ov->reorder[ row ];
142 return ov->table->ops->fetch_int( ov->table, row, col, val );
145 static UINT ORDER_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec )
147 MSIORDERVIEW *ov = (MSIORDERVIEW *)view;
149 TRACE("%p %d %p\n", ov, row, rec );
152 return ERROR_FUNCTION_FAILED;
154 row = ov->reorder[row];
156 return ov->table->ops->get_row(ov->table, row, rec);
159 static UINT ORDER_execute( struct tagMSIVIEW *view, MSIRECORD *record )
161 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
162 UINT r, num_rows = 0, i;
164 TRACE("%p %p\n", ov, record);
167 return ERROR_FUNCTION_FAILED;
169 r = ov->table->ops->execute( ov->table, record );
170 if( r != ERROR_SUCCESS )
173 r = ov->table->ops->get_dimensions( ov->table, &num_rows, NULL );
174 if( r != ERROR_SUCCESS )
177 ov->reorder = msi_alloc( num_rows*sizeof(UINT) );
179 return ERROR_FUNCTION_FAILED;
181 for( i=0; i<num_rows; i++ )
184 r = ORDER_mergesort( ov, 0, num_rows - 1 );
185 if( r != ERROR_SUCCESS )
188 r = ORDER_verify( ov, num_rows );
189 if( r != ERROR_SUCCESS )
192 return ERROR_SUCCESS;
195 static UINT ORDER_close( struct tagMSIVIEW *view )
197 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
202 return ERROR_FUNCTION_FAILED;
204 msi_free( ov->reorder );
207 return ov->table->ops->close( ov->table );
210 static UINT ORDER_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
212 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
214 TRACE("%p %p %p\n", ov, rows, cols );
217 return ERROR_FUNCTION_FAILED;
219 return ov->table->ops->get_dimensions( ov->table, rows, cols );
222 static UINT ORDER_get_column_info( struct tagMSIVIEW *view,
223 UINT n, LPWSTR *name, UINT *type )
225 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
227 TRACE("%p %d %p %p\n", ov, n, name, type );
230 return ERROR_FUNCTION_FAILED;
232 return ov->table->ops->get_column_info( ov->table, n, name, type );
235 static UINT ORDER_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
236 MSIRECORD *rec, UINT row )
238 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
240 TRACE("%p %d %p\n", ov, eModifyMode, rec );
243 return ERROR_FUNCTION_FAILED;
245 return ov->table->ops->modify( ov->table, eModifyMode, rec, row );
248 static UINT ORDER_delete( struct tagMSIVIEW *view )
250 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
255 ov->table->ops->delete( ov->table );
257 msi_free( ov->reorder );
260 msiobj_release( &ov->db->hdr );
263 return ERROR_SUCCESS;
266 static UINT ORDER_find_matching_rows( struct tagMSIVIEW *view, UINT col,
267 UINT val, UINT *row, MSIITERHANDLE *handle )
269 MSIORDERVIEW *ov = (MSIORDERVIEW*)view;
272 TRACE("%p, %d, %u, %p\n", ov, col, val, *handle);
275 return ERROR_FUNCTION_FAILED;
277 r = ov->table->ops->find_matching_rows( ov->table, col, val, row, handle );
279 *row = ov->reorder[ *row ];
285 static const MSIVIEWOPS order_ops =
295 ORDER_get_dimensions,
296 ORDER_get_column_info,
299 ORDER_find_matching_rows,
306 static UINT ORDER_AddColumn( MSIORDERVIEW *ov, LPCWSTR name )
311 TRACE("%p adding %s\n", ov, debugstr_w( name ) );
313 if( ov->view.ops != &order_ops )
314 return ERROR_FUNCTION_FAILED;
318 return ERROR_FUNCTION_FAILED;
319 if( !table->ops->get_dimensions )
320 return ERROR_FUNCTION_FAILED;
321 if( !table->ops->get_column_info )
322 return ERROR_FUNCTION_FAILED;
324 r = table->ops->get_dimensions( table, NULL, &count );
325 if( r != ERROR_SUCCESS )
328 if( ov->num_cols >= count )
329 return ERROR_FUNCTION_FAILED;
331 r = VIEW_find_column( table, name, &n );
332 if( r != ERROR_SUCCESS )
335 ov->cols[ov->num_cols] = n;
336 TRACE("Ordering by column %s (%d)\n", debugstr_w( name ), n);
340 return ERROR_SUCCESS;
343 UINT ORDER_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table,
344 column_info *columns )
346 MSIORDERVIEW *ov = NULL;
352 r = table->ops->get_dimensions( table, NULL, &count );
353 if( r != ERROR_SUCCESS )
355 ERR("can't get table dimensions\n");
359 ov = msi_alloc_zero( sizeof *ov + sizeof (UINT) * count );
361 return ERROR_FUNCTION_FAILED;
363 /* fill the structure */
364 ov->view.ops = &order_ops;
365 msiobj_addref( &db->hdr );
370 *view = (MSIVIEW*) ov;
372 for( x = columns; x ; x = x->next )
373 ORDER_AddColumn( ov, x->column );
375 return ERROR_SUCCESS;