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some access 2k stuff

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This commit is contained in:
brianb
2001-07-10 22:35:37 +00:00
parent abab3e0fc8
commit 5c5aca53f3
3 changed files with 88 additions and 9 deletions
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2
include/mdbtools.h
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@@ -148,6 +148,8 @@ typedef struct {
char name[MDB_MAX_OBJ_NAME+1];
unsigned char index_type;
int first_pg;
int num_rows; /* number rows in index */
int num_keys;
short key_col_num[MDB_MAX_IDX_COLS];
unsigned char key_col_order[MDB_MAX_IDX_COLS];
} MdbIndex;

36
src/libmdb/data.c
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@@ -448,3 +448,39 @@ int mdb_col_disp_size(MdbColumn *col)
}
return 0;
}
int mdb_col_fixed_size(MdbColumn *col)
{
switch (col->col_type) {
case MDB_BOOL:
return 1;
break;
case MDB_BYTE:
return -1;
break;
case MDB_INT:
return 2;
break;
case MDB_LONGINT:
return 4;
break;
case MDB_FLOAT:
return 4;
break;
case MDB_DOUBLE:
return 8;
break;
case MDB_TEXT:
return -1;
break;
case MDB_SDATETIME:
return 4;
break;
case MDB_MEMO:
return -1;
break;
case MDB_MONEY:
return 8;
break;
}
return 0;
}

59
src/libmdb/index.c
View File

@@ -18,6 +18,24 @@
*/
#include "mdbtools.h"
char idx_to_text[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0-7 0x00-0x07 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8-15 0x09-0x0f */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 16-23 0x10-0x17 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 24-31 0x19-0x1f */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 32-39 0x20-0x27 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 40-47 0x29-0x2f */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 48-55 0x30-0x37 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 56-63 0x39-0x3f */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 64-71 0x40-0x47 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 72-79 0x49-0x4f */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, '0', '1', /* 80-87 0x50-0x57 */
'2', '3', '4', '5', '6', '7', '8', '9', /* 88-95 0x59-0x5f */
'A', 'B', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 96-103 0x60-0x67 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 104-111 0x69-0x6f */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 112-119 0x70-0x77 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* 120-127 0x79-0x7f */
};
GPtrArray *mdb_read_indices(MdbTableDef *table)
{
@@ -66,6 +84,9 @@ int name_sz;
table->num_real_idxs--;
continue;
}
pidx->num_rows = mdb_get_int32(mdb, 43+(i*8) );
key_num=0;
for (j=0;j<MDB_MAX_IDX_COLS;j++) {
col_num=mdb_get_int16(mdb,cur_pos);
@@ -82,11 +103,31 @@ int name_sz;
}
cur_pos++;
}
pidx->num_keys = key_num;
cur_pos += 4;
pidx->first_pg = mdb_get_int32(mdb, cur_pos);
cur_pos += 5;
}
}
void mdb_index_walk(MdbTableDef *table, MdbIndex *idx)
{
MdbHandle *mdb = table->entry->mdb;
int cur_pos = 0;
unsigned char marker;
MdbColumn *col;
int i;
if (idx->num_keys!=1) return;
mdb_read_pg(mdb, idx->first_pg);
cur_pos = 0xf8;
for (i=0;i<idx->num_keys;i++) {
marker = mdb->pg_buf[cur_pos++];
col=g_ptr_array_index(table->columns,idx->key_col_num[i]-1);
printf("column %d coltype %d col_size %d\n",i,col->col_type, mdb_col_fixed_size(col));
}
}
void mdb_index_dump(MdbTableDef *table, MdbIndex *idx)
{
int i;
@@ -95,15 +136,15 @@ MdbColumn *col;
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);
fprintf(stdout,"index rows %d\n", idx->num_rows);
if (idx->index_type==1) fprintf(stdout,"index is a primary key\n");
for (i=0;i<MDB_MAX_IDX_COLS;i++) {
if (idx->key_col_num[i]) {
col=g_ptr_array_index(table->columns,idx->key_col_num[i]-1);
fprintf(stdout,"Column %s(%d) Sorted %s\n",
col->name,
idx->key_col_num[i],
idx->key_col_order[i]==MDB_ASC ? "ascending" : "descending"
);
}
for (i=0;i<idx->num_keys;i++) {
col=g_ptr_array_index(table->columns,idx->key_col_num[i]-1);
fprintf(stdout,"Column %s(%d) Sorted %s\n",
col->name,
idx->key_col_num[i],
idx->key_col_order[i]==MDB_ASC ? "ascending" : "descending"
);
}
mdb_index_walk(table, idx);
}