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 tagMSIWHEREVIEW
51 static UINT WHERE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
53 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
55 TRACE("%p %d %d %p\n", wv, row, col, val );
58 return ERROR_FUNCTION_FAILED;
60 if( row > wv->row_count )
61 return ERROR_NO_MORE_ITEMS;
63 row = wv->reorder[ row ];
65 return wv->table->ops->fetch_int( wv->table, row, col, val );
68 static UINT WHERE_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm )
70 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
72 TRACE("%p %d %d %p\n", wv, row, col, stm );
75 return ERROR_FUNCTION_FAILED;
77 if( row > wv->row_count )
78 return ERROR_NO_MORE_ITEMS;
80 row = wv->reorder[ row ];
82 return wv->table->ops->fetch_stream( wv->table, row, col, stm );
85 static UINT WHERE_set_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT val )
87 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
89 TRACE("%p %d %d %04x\n", wv, row, col, val );
92 return ERROR_FUNCTION_FAILED;
94 if( row > wv->row_count )
95 return ERROR_NO_MORE_ITEMS;
97 row = wv->reorder[ row ];
99 return wv->table->ops->set_int( wv->table, row, col, val );
102 static INT INT_evaluate( INT lval, UINT op, INT rval )
107 return ( lval == rval );
109 return ( lval && rval );
111 return ( lval || rval );
113 return ( lval > rval );
115 return ( lval < rval );
117 return ( lval <= rval );
119 return ( lval >= rval );
121 return ( lval != rval );
127 ERR("Unknown operator %d\n", op );
132 static const WCHAR *STRING_evaluate( string_table *st,
133 MSIVIEW *table, UINT row, struct expr *expr, MSIRECORD *record )
139 case EXPR_COL_NUMBER_STRING:
140 r = table->ops->fetch_int( table, row, expr->u.col_number, &val );
141 if( r != ERROR_SUCCESS )
143 return msi_string_lookup_id( st, val );
149 return MSI_RecordGetString( record, 1 );
152 ERR("Invalid expression type\n");
158 static UINT STRCMP_Evaluate( string_table *st, MSIVIEW *table, UINT row,
159 struct expr *cond, INT *val, MSIRECORD *record )
162 const WCHAR *l_str, *r_str;
164 l_str = STRING_evaluate( st, table, row, cond->u.expr.left, record );
165 r_str = STRING_evaluate( st, table, row, cond->u.expr.right, record );
168 else if( l_str && ! r_str )
170 else if( r_str && ! l_str )
173 sr = lstrcmpW( l_str, r_str );
175 *val = ( cond->u.expr.op == OP_EQ && ( sr == 0 ) ) ||
176 ( cond->u.expr.op == OP_LT && ( sr < 0 ) ) ||
177 ( cond->u.expr.op == OP_GT && ( sr > 0 ) );
179 return ERROR_SUCCESS;
182 static UINT WHERE_evaluate( MSIDATABASE *db, MSIVIEW *table, UINT row,
183 struct expr *cond, INT *val, MSIRECORD *record )
189 return ERROR_SUCCESS;
193 case EXPR_COL_NUMBER:
194 r = table->ops->fetch_int( table, row, cond->u.col_number, &tval );
195 *val = tval - 0x8000;
196 return ERROR_SUCCESS;
198 case EXPR_COL_NUMBER32:
199 r = table->ops->fetch_int( table, row, cond->u.col_number, &tval );
200 *val = tval - 0x80000000;
205 return ERROR_SUCCESS;
208 r = WHERE_evaluate( db, table, row, cond->u.expr.left, &lval, record );
209 if( r != ERROR_SUCCESS )
211 r = WHERE_evaluate( db, table, row, cond->u.expr.right, &rval, record );
212 if( r != ERROR_SUCCESS )
214 *val = INT_evaluate( lval, cond->u.expr.op, rval );
215 return ERROR_SUCCESS;
218 return STRCMP_Evaluate( db->strings, table, row, cond, val, record );
221 *val = MSI_RecordGetInteger( record, 1 );
222 return ERROR_SUCCESS;
225 ERR("Invalid expression type\n");
229 return ERROR_SUCCESS;
233 static UINT WHERE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
235 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
236 UINT count = 0, r, i;
238 MSIVIEW *table = wv->table;
240 TRACE("%p %p\n", wv, record);
243 return ERROR_FUNCTION_FAILED;
245 r = table->ops->execute( table, record );
246 if( r != ERROR_SUCCESS )
249 r = table->ops->get_dimensions( table, &count, NULL );
250 if( r != ERROR_SUCCESS )
253 msi_free( wv->reorder );
254 wv->reorder = msi_alloc( count*sizeof(UINT) );
256 return ERROR_FUNCTION_FAILED;
259 if (wv->cond->type == EXPR_STRCMP)
261 MSIITERHANDLE handle = NULL;
262 UINT row, value, col;
263 struct expr *col_cond = wv->cond->u.expr.left;
264 struct expr *val_cond = wv->cond->u.expr.right;
266 /* swap conditionals */
267 if (col_cond->type != EXPR_COL_NUMBER_STRING)
269 val_cond = wv->cond->u.expr.left;
270 col_cond = wv->cond->u.expr.right;
273 if ((col_cond->type == EXPR_COL_NUMBER_STRING) && (val_cond->type == EXPR_SVAL))
275 col = col_cond->u.col_number;
276 /* special case for "" - translate it into nil */
277 if (!val_cond->u.sval[0])
281 r = msi_string2idW(wv->db->strings, val_cond->u.sval, &value);
282 if (r != ERROR_SUCCESS)
284 TRACE("no id for %s, assuming it doesn't exist in the table\n", debugstr_w(wv->cond->u.expr.right->u.sval));
285 return ERROR_SUCCESS;
291 r = table->ops->find_matching_rows(table, col, value, &row, &handle);
292 if (r == ERROR_SUCCESS)
293 wv->reorder[ wv->row_count ++ ] = row;
294 } while (r == ERROR_SUCCESS);
296 if (r == ERROR_NO_MORE_ITEMS)
297 return ERROR_SUCCESS;
301 /* else fallback to slow case */
304 for( i=0; i<count; i++ )
307 r = WHERE_evaluate( wv->db, table, i, wv->cond, &val, record );
308 if( r != ERROR_SUCCESS )
311 wv->reorder[ wv->row_count ++ ] = i;
314 return ERROR_SUCCESS;
317 static UINT WHERE_close( struct tagMSIVIEW *view )
319 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
324 return ERROR_FUNCTION_FAILED;
326 msi_free( wv->reorder );
329 return wv->table->ops->close( wv->table );
332 static UINT WHERE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
334 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
336 TRACE("%p %p %p\n", wv, rows, cols );
339 return ERROR_FUNCTION_FAILED;
344 return ERROR_FUNCTION_FAILED;
345 *rows = wv->row_count;
348 return wv->table->ops->get_dimensions( wv->table, NULL, cols );
351 static UINT WHERE_get_column_info( struct tagMSIVIEW *view,
352 UINT n, LPWSTR *name, UINT *type )
354 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
356 TRACE("%p %d %p %p\n", wv, n, name, type );
359 return ERROR_FUNCTION_FAILED;
361 return wv->table->ops->get_column_info( wv->table, n, name, type );
364 static UINT WHERE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
367 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
369 TRACE("%p %d %p\n", wv, eModifyMode, rec );
372 return ERROR_FUNCTION_FAILED;
374 return wv->table->ops->modify( wv->table, eModifyMode, rec );
377 static UINT WHERE_delete( struct tagMSIVIEW *view )
379 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
384 wv->table->ops->delete( wv->table );
387 msi_free( wv->reorder );
391 msiobj_release( &wv->db->hdr );
394 return ERROR_SUCCESS;
397 static UINT WHERE_find_matching_rows( struct tagMSIVIEW *view, UINT col,
398 UINT val, UINT *row, MSIITERHANDLE *handle )
400 MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
403 TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
406 return ERROR_FUNCTION_FAILED;
408 r = wv->table->ops->find_matching_rows( wv->table, col, val, row, handle );
410 if( *row > wv->row_count )
411 return ERROR_NO_MORE_ITEMS;
413 *row = wv->reorder[ *row ];
419 static const MSIVIEWOPS where_ops =
427 WHERE_get_dimensions,
428 WHERE_get_column_info,
431 WHERE_find_matching_rows
434 static UINT WHERE_VerifyCondition( MSIDATABASE *db, MSIVIEW *table, struct expr *cond,
442 r = VIEW_find_column( table, cond->u.column, &val );
443 if( r == ERROR_SUCCESS )
446 r = table->ops->get_column_info( table, val, NULL, &type );
447 if( r == ERROR_SUCCESS )
449 if (type&MSITYPE_STRING)
450 cond->type = EXPR_COL_NUMBER_STRING;
451 else if ((type&0xff) == 4)
452 cond->type = EXPR_COL_NUMBER32;
454 cond->type = EXPR_COL_NUMBER;
455 cond->u.col_number = val;
464 ERR("Couldn't find column %s\n", debugstr_w( cond->u.column ) );
468 r = WHERE_VerifyCondition( db, table, cond->u.expr.left, valid );
469 if( r != ERROR_SUCCESS )
472 return ERROR_SUCCESS;
473 r = WHERE_VerifyCondition( db, table, cond->u.expr.right, valid );
474 if( r != ERROR_SUCCESS )
477 /* check the type of the comparison */
478 if( ( cond->u.expr.left->type == EXPR_SVAL ) ||
479 ( cond->u.expr.left->type == EXPR_COL_NUMBER_STRING ) ||
480 ( cond->u.expr.right->type == EXPR_SVAL ) ||
481 ( cond->u.expr.right->type == EXPR_COL_NUMBER_STRING ) )
483 switch( cond->u.expr.op )
491 return ERROR_INVALID_PARAMETER;
494 /* FIXME: check we're comparing a string to a column */
496 cond->type = EXPR_STRCMP;
502 cond->type = EXPR_UVAL;
503 cond->u.uval = cond->u.ival;
512 ERR("Invalid expression type\n");
517 return ERROR_SUCCESS;
520 UINT WHERE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table,
523 MSIWHEREVIEW *wv = NULL;
524 UINT count = 0, r, valid = 0;
526 TRACE("%p\n", table );
528 r = table->ops->get_dimensions( table, NULL, &count );
529 if( r != ERROR_SUCCESS )
531 ERR("can't get table dimensions\n");
537 r = WHERE_VerifyCondition( db, table, cond, &valid );
538 if( r != ERROR_SUCCESS )
541 return ERROR_FUNCTION_FAILED;
544 wv = msi_alloc_zero( sizeof *wv );
546 return ERROR_FUNCTION_FAILED;
548 /* fill the structure */
549 wv->view.ops = &where_ops;
550 msiobj_addref( &db->hdr );
556 *view = (MSIVIEW*) wv;
558 return ERROR_SUCCESS;