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new index code

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brianb
2001-04-01 22:10:15 +00:00
parent b40283a8f8
commit 5ceaff28ce
9 changed files with 129 additions and 15 deletions
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69
src/libmdb/index.c Normal file
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/* MDB Tools - A library for reading MS Access database file
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "mdbtools.h"
GPtrArray *mdb_read_indices(MdbTableDef *table)
{
MdbHandle *mdb = table->entry->mdb;
MdbIndex idx, *pidx;
int len, i;
int cur_pos;
int name_sz;
/* FIX ME -- doesn't handle multipage table headers */
table->indices = g_ptr_array_new();
cur_pos = table->index_start;
for (i=0;i<table->num_real_idxs;i++) {
memset(&idx, '\0', sizeof(MdbIndex));
idx.index_num = i;
cur_pos += 34;
idx.first_pg = mdb_get_int32(mdb, cur_pos);
cur_pos += 5;
mdb_append_index(table->indices, &idx);
}
for (i=0;i<table->num_idxs;i++) {
pidx = g_ptr_array_index (table->indices, i);
cur_pos += 19;
if (mdb->pg_buf[cur_pos++]==0x01)
pidx->primary_key=1;
}
for (i=0;i<table->num_idxs;i++) {
pidx = g_ptr_array_index (table->indices, i);
name_sz=mdb->pg_buf[cur_pos++];
memcpy(pidx->name, &mdb->pg_buf[cur_pos], name_sz);
pidx->name[name_sz]='\0';
//fprintf(stderr, "index name %s\n", pidx->name);
cur_pos += name_sz;
}
}
void mdb_index_dump(MdbIndex *idx)
{
int i;
fprintf(stdout,"index number %d\n", idx->index_num);
fprintf(stdout,"index name %s\n", idx->name);
fprintf(stdout,"index first page %d\n", idx->first_pg);
if (idx->primary_key) fprintf(stdout,"index is a primary key\n");
}