lsm/mdbtools
1
0
Fork 0
mirror of https://github.com/mdbtools/mdbtools.git synced 2025-09-18 18:22:07 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

mdb-export: Add boolean words option (TRUE/FALSE)

Browse Source 
Adds "-B" (--boolean-words) option to mdb-export, which will reconfigure
mdb/data.c to export TRUE/FALSE for boolean values instead of 1/0.  The
option is needed to support BOOLEAN fields on PostgreSQL, which will not
implicitly cast bare 1/0 into a BOOLEAN value.  Value literals are the
SQL TRUE/FALSE, and _quoted_ words meaning true/false and _quoted_
'1'/'0'.  With this flag the SQL TRUE/FALSE values are output, which should
work with several SQL databases.

PostgreSQL Reference:

http://www.postgresql.org/docs/current/static/datatype-boolean.html
This commit is contained in:
Ewen McNeill
2016-04-07 08:45:06 +12:00
parent 3b6d88f347
commit 8b1db6c08e
3 changed files with 28 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/libmdb/data.c
View File

@@ -44,6 +44,25 @@ void mdb_set_date_fmt(const char *fmt)
strncpy(date_fmt, fmt, 63);
}
/* Some databases (eg PostgreSQL) do not understand integer 0/1 values
* as TRUE/FALSE, so provide a means to override the values used to be
* the SQL Standard TRUE/FALSE values.
*/
static char boolean_false_number[] = "0";
static char boolean_true_number[] = "1";
static char boolean_false_word[] = "FALSE";
static char boolean_true_word[] = "TRUE";
static char *boolean_false_value = boolean_false_number;
static char *boolean_true_value = boolean_true_number;
void mdb_set_boolean_fmt_words()
{
boolean_false_value = boolean_false_word;
boolean_true_value = boolean_true_word;
}
void mdb_bind_column(MdbTableDef *table, int col_num, void *bind_ptr, int *len_ptr)
{
MdbColumn *col;
@@ -168,10 +187,11 @@ mdb_xfer_bound_bool(MdbHandle *mdb, MdbColumn *col, int value)
{
col->cur_value_len = value;
if (col->bind_ptr) {
strcpy(col->bind_ptr, value ? "0" : "1");
strcpy(col->bind_ptr,
value ? boolean_false_value : boolean_true_value);
}
if (col->len_ptr) {
*col->len_ptr = 1;
*col->len_ptr = strlen(col->bind_ptr);
}
return 1;