1 /* MDB Tools - A library for reading MS Access database files
2 * Copyright (C) 2004 Brian Bruns
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #include "mdbtools.h"
21
22 #ifdef DMALLOC
23 #include "dmalloc.h"
24 #endif
25
26 /*
27 * Temp table routines. These are currently used to generate mock results for
28 * commands like "list tables" and "describe table"
29 */
30
31 void
mdb_fill_temp_col(MdbColumn * tcol,char * col_name,int col_size,int col_type,int is_fixed)32 mdb_fill_temp_col(MdbColumn *tcol, char *col_name, int col_size, int col_type, int is_fixed)
33 {
34 memset(tcol,0,sizeof(MdbColumn));
35 strcpy(tcol->name, col_name);
36 tcol->col_type = col_type;
37 if ((col_type == MDB_TEXT) || (col_type == MDB_MEMO)) {
38 tcol->col_size = col_size;
39 } else {
40 tcol->col_size = mdb_col_fixed_size(tcol);
41 }
42 tcol->is_fixed = is_fixed;
43 }
44 void
mdb_fill_temp_field(MdbField * field,void * value,int siz,int is_fixed,int is_null,int start,int colnum)45 mdb_fill_temp_field(MdbField *field, void *value, int siz, int is_fixed, int is_null, int start, int colnum)
46 {
47 field->value = value;
48 field->siz = siz;
49 field->is_fixed = is_fixed;
50 field->is_null = is_null;
51 field->start = start;
52 field->colnum = colnum;
53 }
54 MdbTableDef *
mdb_create_temp_table(MdbHandle * mdb,char * name)55 mdb_create_temp_table(MdbHandle *mdb, char *name)
56 {
57 MdbCatalogEntry *entry;
58 MdbTableDef *table;
59
60 /* dummy up a catalog entry */
61 entry = (MdbCatalogEntry *) g_malloc0(sizeof(MdbCatalogEntry));
62 entry->mdb = mdb;
63 entry->object_type = MDB_TABLE;
64 entry->table_pg = 0;
65 strcpy(entry->object_name, name);
66
67 table = mdb_alloc_tabledef(entry);
68 table->columns = g_ptr_array_new();
69 table->is_temp_table = 1;
70 table->temp_table_pages = g_ptr_array_new();
71
72 return table;
73 }
74 void
mdb_temp_table_add_col(MdbTableDef * table,MdbColumn * col)75 mdb_temp_table_add_col(MdbTableDef *table, MdbColumn *col)
76 {
77 col->col_num = table->num_cols;
78 if (!col->is_fixed)
79 col->var_col_num = table->num_var_cols++;
80 g_ptr_array_add(table->columns, g_memdup(col, sizeof(MdbColumn)));
81 table->num_cols++;
82 }
83 /*
84 * Should be called after setting up all temp table columns
85 */
mdb_temp_columns_end(MdbTableDef * table)86 void mdb_temp_columns_end(MdbTableDef *table)
87 {
88 MdbColumn *col;
89 unsigned int i;
90 unsigned int start = 0;
91
92 for (i=0; i<table->num_cols; i++) {
93 col = g_ptr_array_index(table->columns, i);
94 if (col->is_fixed) {
95 col->fixed_offset = start;
96 start += col->col_size;
97 }
98 }
99 }
100