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more index work

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fixed gnome detection (i think)
added back/forward navigation to gui debugger
This commit is contained in:
brianb
2003-01-09 20:24:19 +00:00
parent c3386d2a43
commit f35c3f05b9
6 changed files with 514 additions and 62 deletions
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95
src/util/prindex.c
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@@ -19,7 +19,9 @@
*/
#include "mdbtools.h"
extern char idx_to_text[];
void walk_index(MdbHandle *mdb, MdbIndex *idx);
main(int argc, char **argv)
{
int rows;
@@ -39,7 +41,10 @@ int found = 0;
}
mdb_init();
mdb = mdb_open(argv[1]);
if (!(mdb = mdb_open(argv[1]))) {
fprintf(stderr,"Unable to open database.\n");
exit(1);
}
mdb_read_catalog(mdb, MDB_TABLE);
@@ -71,34 +76,108 @@ int found = 0;
exit(0);
}
char *
page_name(int page_type)
{
switch(page_type) {
case 0x00: return "Database Properties"; break;
case 0x01: return "Data"; break;
case 0x02: return "Table Definition"; break;
case 0x03: return "Index"; break;
case 0x04: return "Index Leaf"; break;
case 0x05: return "Page Usage"; break;
}
}
void check_row(MdbHandle *mdb, MdbIndex *idx, guint32 pg, int row, unsigned char *idxrow, int len)
{
MdbField fields[256];
MdbFormatConstants *fmt;
int num_fields, i, j, k;
int row_start, row_end;
MdbColumn *col;
guchar buf[256], key[256], mykey[256];
int elem, pos;
MdbTableDef *table = idx->table;
fmt = mdb->fmt;
mdb_read_pg(mdb, pg);
row_start = mdb_get_int16(mdb, (fmt->row_count_offset + 2) + (row*2));
row_end = mdb_find_end_of_row(mdb, row);
num_fields = mdb_crack_row(table, row_start, row_end, &fields);
for (i=0;i<idx->num_keys;i++) {
col=g_ptr_array_index(table->columns,idx->key_col_num[i]-1);
if (col->col_type==MDB_TEXT) {
mdb_index_hash_text(buf, key);
}
for (j=0;j<num_fields;j++) {
if (fields[j].colnum+1==idx->key_col_num[i]) {
elem = j;
break;
}
}
//j = idx->key_col_num[i];
strncpy(buf, fields[elem].value, fields[elem].siz);
buf[fields[elem].siz]=0;
fprintf(stdout, "elem %d %d column %d %s %s\n",elem, fields[elem].colnum, idx->key_col_num[i], col->name, buf);
if (col->col_type == MDB_TEXT) {
fprintf(stdout, "%s = %s \n", buf, key);
}
}
}
void
walk_index(MdbHandle *mdb, MdbIndex *idx)
{
int i, j, start, len;
unsigned char byte;
guint32 pg;
int row;
guint16 row;
MdbHandle *mdbidx;
MdbIndexChain chain;
MdbTableDef *table = idx->table;
MdbSarg sarg;
#if 1
sarg.op = MDB_EQUAL;
//strcpy(sarg.value.s, "SP");
sarg.value.i = 2;
mdb_add_sarg_by_name(table, "ShipperID", &sarg);
#endif
memset(&chain, 0, sizeof(MdbIndexChain));
printf("name %s\n", idx->name);
printf("root page %ld\n", idx->first_pg);
mdb_read_pg(mdb, idx->first_pg);
/* clone the handle to search the index, and use the original to read
* the data */
mdbidx = mdb_clone_handle(mdb);
mdb_read_pg(mdbidx, idx->first_pg);
printf("page type %02x %s\n", mdbidx->pg_buf[0], page_name(mdbidx->pg_buf[0]));
while (mdb_index_find_next(mdbidx, idx, &chain, &pg, &row)) {
printf("row = %d pg = %lu\n", row, pg);
check_row(mdb, idx, pg, row, &mdbidx->pg_buf[start], len - 4);
}
#if 0
if (mdbidx->pg_buf[0]!=MDB_PAGE_LEAF) {
return;
}
start = 0xf8; /* start byte of the index entries */
len = -1;
for (i=0x16;i<0xf8;i++) {
byte = mdb->pg_buf[i];
byte = mdbidx->pg_buf[i];
//printf("%02x ",byte);
for (j=0;j<8;j++) {
len++;
if ((1 << j) & byte) {
// printf("start = %04x len = %d\n", start, len);
buffer_dump(mdb->pg_buf, start, start+len-1);
row = mdb->pg_buf[start+len-1];
pg = mdb_get_int24_msb(mdb, start+len-4);
printf("row = %d pg = %lu\n", row, pg);
buffer_dump(mdbidx->pg_buf, start, start+len-1);
row = mdbidx->pg_buf[start+len-1];
pg = mdb_get_int24_msb(mdbidx, start+len-4);
start += len;
len = 0;
// printf("\nbit %d set\n", j);
}
}
}
#endif
mdb_close(mdbidx);
}