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Patches from Brent Johnson for double, off page memo, and big endian support

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brianb
2000-08-09 03:04:57 +00:00
parent e05970d711
commit 62dc667342
16 changed files with 315 additions and 86 deletions
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55
src/libmdb/data.c
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@@ -255,10 +255,51 @@ int mdb_is_fixed_col(MdbColumn *col)
{
return col->is_fixed;
}
static char *mdb_memo_to_string(MdbHandle *mdb, int start, int size)
{
short memo_len;
static char text[MDB_BIND_SIZE];
if (size<MDB_MEMO_OVERHEAD) {
return "";
} else if (size == MDB_MEMO_OVERHEAD) {
/* If the only thing here is the field information, the
* data is linked. Go read it from another page.
* Question: Do we need to read and evaluate the whole page?
* Question: It seems to be the only record on the page. If
* it weren't, how do we know which record it is?
*
* WARNING: Assuming the storage area is at least 2048 bytes!
*/
/* The 16 bit integer at offset 0 is the length of the memo field.
* The 16 bit integer at offset 5 is the page it is stored on.
*/
memo_len = mdb_get_int16(mdb, start);
if(mdb_read_alt_pg(mdb, mdb_get_int16(mdb, start+5)) != mdb->pg_size) {
/* Failed to read */
return "";
}
strncpy(text, &mdb->alt_pg_buf[mdb->pg_size - memo_len], memo_len);
return text;
} else {
strncpy(text, &mdb->pg_buf[start + MDB_MEMO_OVERHEAD],
size - MDB_MEMO_OVERHEAD);
text[size - MDB_MEMO_OVERHEAD]='\0';
return text;
}
#if 0
strncpy(text, &mdb->pg_buf[start + MDB_MEMO_OVERHEAD],
size - MDB_MEMO_OVERHEAD);
text[size - MDB_MEMO_OVERHEAD]='\0';
return text;
#endif
}
char *mdb_col_to_string(MdbHandle *mdb, int start, int datatype, int size)
{
/* FIX ME -- not thread safe */
static char text[256];
static char text[MDB_BIND_SIZE];
switch (datatype) {
case MDB_BOOL:
@@ -273,6 +314,10 @@ static char text[256];
sprintf(text,"%ld",mdb_get_int32(mdb, start));
return text;
break;
case MDB_DOUBLE:
sprintf(text,"%f",mdb_get_double(mdb, start));
return text;
break;
case MDB_TEXT:
if (size<0) {
return "";
@@ -282,13 +327,7 @@ static char text[256];
return text;
break;
case MDB_MEMO:
if (size<MDB_MEMO_OVERHEAD) {
return "";
}
strncpy(text, &mdb->pg_buf[start + MDB_MEMO_OVERHEAD],
size - MDB_MEMO_OVERHEAD);
text[size - MDB_MEMO_OVERHEAD]='\0';
return text;
return mdb_memo_to_string(mdb, start, size);
break;
default:
return "";