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lots more gmdb2 stuff, converted table export to glade, added schema export, toolbars, properties window to glade, et al.

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This commit is contained in:
brianb
2002-12-30 16:38:47 +00:00
parent feddbece22
commit 3c0d61076d
18 changed files with 1969 additions and 919 deletions
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42
src/libmdb/write.c
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@@ -28,6 +28,7 @@ typedef struct {
int siz;
unsigned char is_null;
unsigned char is_fixed;
int colnum;
} MdbField;
static int
@@ -44,26 +45,17 @@ MdbIndex *idx;
}
return 0;
}
static int mdb_is_null(unsigned char *null_mask, int col_num)
{
int byte_num = (col_num - 1) / 8;
int bit_num = (col_num - 1) % 8;
if ((1 << bit_num) & null_mask[byte_num]) {
return 0;
} else {
return 1;
}
}
int
mdb_crack_row(MdbTableDef *table, int row_start, int row_end, MdbField *fields)
{
MdbCatalogEntry *entry = table->entry;
MdbHandle *mdb = entry->mdb;
MdbColumn *col;
int var_cols, fixed_cols, num_cols, i;
unsigned char null_mask[33]; /* 256 columns max / 8 bits per byte */
int var_cols, fixed_cols, num_cols, i, totcols;
unsigned char *nullmask;
int bitmask_sz;
int byte_num, bit_num;
printf("field 0 %s\n", fields[0].value);
@@ -73,20 +65,36 @@ int bitmask_sz;
num_cols = mdb->pg_buf[row_start];
}
totcols = 0;
var_cols = 0; /* mdb->pg_buf[row_end-1]; */
fixed_cols = 0; /* num_cols - var_cols; */
for (i = 0; i < table->num_cols; i++) {
col = g_ptr_array_index (table->columns, i);
if (mdb_is_fixed_col(col))
if (mdb_is_fixed_col(col)) {
fixed_cols++;
else
fields[totcols++].colnum = i;
fields[totcols].siz = col->col_size;
fields[totcols].is_fixed = 1;
}
}
for (i = 0; i < table->num_cols; i++) {
col = g_ptr_array_index (table->columns, i);
if (!mdb_is_fixed_col(col)) {
var_cols++;
fields[totcols++].colnum = i;
fields[totcols].is_fixed = 0;
}
}
bitmask_sz = (num_cols - 1) / 8 + 1;
nullmask = &mdb->pg_buf[row_end - bitmask_sz + 1];
for (i=0;i<bitmask_sz;i++) {
null_mask[i]=mdb->pg_buf[row_end - bitmask_sz + i + 1];
for (i=0;i<num_cols;i++) {
byte_num = i / 8;
bit_num = i % 8;
/* logic on nulls is reverse, 1 is not null, 0 is null */
fields[i].is_null = nullmask[byte_num] & 1 << bit_num ? 0 : 1;
printf("col %d is %s\n", i, fields[i].is_null ? "null" : "not null");
}
return num_cols;