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support for memo types (inline only)

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corrections to bitmask sizing.
moved references to page size to MdbHandle->pg_size
This commit is contained in:
brianb
2000-03-16 02:16:35 +00:00
parent 62e65cdd26
commit 9551d017a8
6 changed files with 37 additions and 19 deletions
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25
src/libmdb/data.c
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@@ -37,7 +37,7 @@ int rows, row_end;
rows = mdb_get_int16(mdb,8);
if (row==0)
row_end=2047; /* end of page */
row_end = mdb->pg_size - 1; /* end of page */
else
row_end = mdb_get_int16(mdb, (10 + (row-1) * 2)) - 1;
@@ -89,7 +89,7 @@ int bitmask_sz;
else
var_cols++;
}
bitmask_sz = (num_cols - 1) / 8 - 1;
bitmask_sz = (num_cols - 1) / 8 + 1;
eod = mdb->pg_buf[row_end-1-var_cols-bitmask_sz];
#if MDB_DEBUG
@@ -132,12 +132,15 @@ int bitmask_sz;
col = g_ptr_array_index(table->columns,j);
if (!mdb_is_fixed_col(col) &&
++var_cols_found <= var_cols) {
col_start = mdb->pg_buf[row_end-1-var_cols_found];
col_start = mdb->pg_buf[row_end-bitmask_sz-var_cols_found];
if (var_cols_found==var_cols)
len=eod - col_start;
else
len=mdb->pg_buf[row_end-1-var_cols_found-1] - col_start;
len=mdb->pg_buf[row_end
- bitmask_sz
- var_cols_found
- 1 ] - col_start;
#if MDB_DEBUG
fprintf(stdout,"coltype %d colstart %d len %d\n",
@@ -242,11 +245,7 @@ char *bound_values[256]; /* warning doesn't handle tables > 256 columns. Can th
int mdb_is_fixed_col(MdbColumn *col)
{
/* FIX ME -- not complete */
if (col->col_type==MDB_TEXT)
return FALSE;
else
return TRUE;
return col->is_fixed;
}
char *mdb_col_to_string(MdbHandle *mdb, int start, int datatype, int size)
{
@@ -272,6 +271,14 @@ static char text[256];
strncpy(text, &mdb->pg_buf[start], size);
text[size]='\0';
return text;
case MDB_MEMO:
if (size<MDB_MEMO_OVERHEAD) {
return "(oops)";
}
strncpy(text, &mdb->pg_buf[start + MDB_MEMO_OVERHEAD],
size - MDB_MEMO_OVERHEAD);
text[size - MDB_MEMO_OVERHEAD]='\0';
return text;
break;
}
return NULL;